Carrier WeatherExpert 48LC Installation Instructions Manual

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Page 1

48LC

WeatherExpertRSeries Single Package Rooftop

Gas Heat/Electric Cooling Unit with Puronr (R ---410A) Refrigerant Sizes: 14, 17, 20, 24, 26

Installation Instructions

NOTE: Read the entire instruction manual before starting the installation.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS 2....................

Rated Indoor Airflow (cfm) 4.....................

INSTALLATION 15..............................

Jobsite Survey 15...............................

Step 1 -- Plan for Unit Location 15.................

Roof Mount 15..............................

Step 2 -- Plan for Sequence of Unit Installation 15.....

Curb--Mounted Installation 15..................

Pad--Mounted Installation 15...................

Frame--Mounted Installation 15.................

Step 3 -- Inspect Unit 15..........................

Step 4 -- Provide Unit Support 16..................

Roof Curb Mount 16.........................

Slab Mount (Horizontal Units Only) 16..........

Alternate Unit Support

(In Lieu of Curb or Slab Mount) 16.............

Step 5 -- Field Fabricate Ductwork 20...............

Step 6 -- Rig and Place Unit 20....................

Positioning on Curb 21.......................

Step 7 -- Horizontal Duct Connection 21............

Step 8 -- Install Outside Air Hood — Factory Option 21..

Step 9 -- Install Flue Hood and Combustion Air Hood 22.

Step 10 -- Install Gas Piping 23....................

Gas Supply Line 23..........................

Factory--Option Thru--Base Connections 24.......

Step 11 -- Install External Condensate Trap and Line 25..

Step 12 -- Make Electrical Connections 25...........

Field Power Supply 25........................

Units Without Factory--Installed

Non--Fused Disconnect or HACR 32.............

Units With Factory--Installed

Non--Fused Disconnect or HACR 32.............

All Units 33................................

Convenience Outlets 33.......................

HACR 34..................................

Factory--Option Thru--Base Connections 35......

Units Without Thru --Base Connections 35........

Field Control Wiring 35.......................

Thermostat 35...............................

Unit Without Thru--Base Conversion Kit 35.......

Heat Anticipator Settings 36...................

Transformer Connection

for 208--v Power Supply 36.....................

RTU Open Controller (Factory--Installed Option) 36...

SystemVut Controller (Factory--Installed Option) 36..

Humidi--MiZer

Humidi--MiZer System -- Space RH Controller 37..

Integrated Staging Control (ISC) Board 38...........

ISC Board — Sequence of Operation 38...........

General 38.................................

Ventilation 38...............................

Cooling 39.................................

Humidi--MiZer System (Optional) 39............

Economizer (Optional) 39.....................

Low Ambient Cooling Operation

Down to 40_F(4_C) 40.......................

Heating 40.................................

EconoMi$er

Unit Installation 41..........................

Enthalpy Sensor Relocation 41.................

W7220 Economizer Controller 41................

User Interface 41............................

Keypad 41.................................

Menu Structure 42.............................

Connections and Applications 46.................

W7220 Economizer Module Wiring 46..........

Economizer Controlled Configurations 47..........

Enthalpy Changeover Control 47...............

Enthalpy Settings 47.........................

Demand Controlled Ventilation 49..............

Economizer Occupancy Control 50..............

System Control Connections 37....

X (Factory--Installed Option) 41.......

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Hardware 51.................................

Actuators 51................................

Supply Air Temperature Sensor 51..............

Outside Air Temperature Sensor 51.............

Enthalpy Control Sensor Configuration 51........

Operating Sequences 52........................

Staged Air Volume (3--Speed) Fan Motor 52......

W7220 Economizer Control 52.................

Base Unit Controls 52........................

Cooling, Unit With EconoMi$er Without CO

Heating With EconoMi$er X 54.................

Demand Controlled Ventilation 55..............

Setup and Configuration 55.....................

Initial Menu Display 55.......................

Time--out and Screensaver 55..................

Checkout 55.................................

Status 56...................................

Calibration of Sensors 56......................

Resetting All Defaults 56......................

Troubleshooting 56............................

Power Up Delay 56..........................

Power Loss (Outage or Brownout) 56............

Alarms 56..................................

Clearing Alarms 56..........................

Control Set Point and Configuration Log 59........

Staged Air Volume (SAVt)

with Variable Frequency Drive 62..................

Multi--Speed VFD Display Kit

(Field--Installed Accessory) 63....................

Connecting the Keypad to the VFD 63.............

Program the VFD for 3 Discrete

Indoor Fan Speeds 64..........................

Smoke Detectors 80...........................

Return Air Sensor Tube Installation 80...........

Smoke Detector Test Magnet 80................

Additional Application Data 80.................

Step 13 -- Install Accessories 80...................

Step 14 -- Check Belt Tension 81...................

UNIT START--UP CHECKLIST 83..................

Sensor 52.......................

product. Refer to the individual instructions packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloths for brazing operations and have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and appropriate national electrical codes (in USA, ANSI/NFPA 70, National Electrical Code (NEC); in Canada, CSA C22.1) for special requirements.

It is important to recognize safety information. This is the safety--alert symbol

unit and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety--alert symbol. DANGER identifies the most serious hazards which will result in seve re personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices, which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal injury or death.

Disconnect gas piping from unit when leak testing at pressure greater than 0.5 psig (3450 Pa). Pressures greater than 0.5 psig (3450 Pa) will cause gas valve damage resulting in hazardous condition. If gas valve is subjected to pressure greater than 0.5 psig (3450 Pa), it must be replaced before use. When pressure testing field--supplied gas piping at pressures of 0.5 psig (3450 Pa) or less, a unit connected to such piping must be isolated by closing the manual gas valve.



FIRE HAZARD

Failure to follow this warning could result in personal injury, death, and/or property damage.

Inlet pressure tab set screw must be tightened and NPT pipe plug must be installed to prevent gas leaks.

. When you see this symbol on the

WARNING

/8in.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory--authorized kits or accessories when modifying this

518

GAS VALVE

INLET PRESSURE

TAP SET SCREW

Page 3



WARNING

FIRE HAZARD

Failure to follow this warning could result in personal injury, death, and/or property damage.

Manifold pressure tap set screw must be tightened and

/8in. NPT pipe plug must be installed to prevent gas

leak.

MANIFOLD PRESSURE

TAP SET SCREW

MANIFOLD

GAS VALVE

WARNING

CARBON--MONOXIDE POISONING HAZARD

Failure to follow instructions could result in severe personal injury or death due to carbon--monoxide poisoning, if combustion products infiltrate into the building.

Check that all openings in the outside wall around the vent (and air intake) pipe(s) are sealed to prevent infiltration of c om bustion products into the building.

Check that furnace vent (and air intake) terminal(s) are not obstructed in any way during all seasons.

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal injury, death and/or equipment damage.

Puronr (R--410A) refrige rant systems operate at higher pressures than standard R--22 systems. Do not use R--22 service equipment or components on Puron refrigerant equipment.

WARNING

PERSONAL INJURY AND ENVIRONMENTAL HAZARD

Failure to follow this warning could cause personal injury or death.

Relieve pre ssure and recover all refrigerant before system repair or final unit disposal.

Ware safety glasses and gloves when handling refrigerants. Keep torches and other ignition sources away from refrigerants and oils.

CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury. Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing air conditioning equipment.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

Before performing service or maintenance operations on unit, always turn off main power switch to unit and install lock(s) and lockout tag(s). Unit ma y have more than one power switch.

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Rated Indoor Airflow (cfm)

The table to the right lists the rated indoor airflow used for the AHRI efficiency rating for the units covered in this document.

Model Number Full Load Airflow (cfm)

48LC**14 4375

48LC**17 4875

48LC**20 5690

48LC**24 6500

48LC**26 7500

Position:

Example:

1234567891011 12 13 14 15 16

48LCD0 24A1A5 -0A0A0

Unit Heat Type

48 - Gas Heat Packaged Rooftop

Model Series - WeatherExpert

LC - Ultra High Efficiency

Heat Options

D = Low Gas Heat E = Medium Gas Heat F = High Gas Heat S = Low Heat w/ Stainless Steel Exchanger R = Medium Heat w/ Stainless Steel Exchanger T = High Heat w/ Stainless Steel Exchanger

Refrig. Systems Options

0 = Three stage cooling capacity control with TXV A = Three stage cooling capacity control with TXV and Humidi-MiZer

system

Cooling Tons

14 - 12.5 ton 17 - 15 ton 20 - 17.5 ton 24 - 20 ton 26 - 23 ton

Sens or Options

A = None B = RA Smoke Detector C = SA Smoke Detector D = RA + SA Smoke Detector E = CO

F = RA Smoke Detector and CO G = SA Smoke Detector and CO H = RA + SA Smoke Detector and CO

Indoor Fan Motor Options

1 = Standard Static / Vertical Supply, Return Air Flow 2 = Medium Static / Vertical Supply, Return Air Flow 3 = High Static / Vertical Supply, Return Air Flow 4 = Ultra High Static / Vertical Supply, Return Air Flow 5 = Standard Static / Horizontal Supply, Return Air Flow 6 = Medium Static / Horizontal Supply, Return Air Flow 7 = High Static / Horizontal Supply, Return Air Flow 8 = Ultra High Static / Horizontal Supply, Return Air Flow

Packaging

0 = Standard 1 = LTL

Electrical Options

A = None B = HACR Circuit Breaker C = Non-Fused Disconnect

Service Options

0 = None 1 = Unpowered Convenience Outlet 2 = Powered Convenience Outlet 3 = Hinged Panels 4 = Hinged Panels and Unpowered Convenience Outlet 5 = Hinged Panels and Powered Convenience Outlet

Intake / Exhaust Options

A = None B = Temperature Standard Leak Economizer with Barometric Relief C = Temperature Standard Leak Economizer with Centrifugal Power Exhaust - Vertical Only E = Enthalpy Standard Leak Economizer with Barometric Relief F = Enthalpy Standard Leak Economizer with Centrifugal Power Exhaust - Vertical Only N = Temperature Ultra Low Leak Economizer with Barometric Relief P = Temperature Ultra Low Leak Economizer with Centrifugal Power Exhaust - Vertical Only R = Enthalpy Ultra Low Leak Economizer with Barometric Relief S = Enthalpy Ultra Low Leak Economizer with Centrifugal Power Exhaust - Vertical Only

Base Unit Controls

0 = Electro-mechanical Controls 1 = RTU Open Multi-Protocol Controller 4 = SystemVu™ Controller

Design Revision

- = Factory Design Revision

Coil Options: Fin/Tube (Condenser- Evaporator - Hail Guard)

A = Al/Cu - Al/Cu B = Precoat Al/Cu - Al/Cu C = E-coat Al/Cu - Al/Cu D = E-coat Al/Cu - E-coat Al/Cu E = Cu/Cu - Al/Cu F = Cu/Cu - Cu/Cu M = Al/Cu -Al/Cu — Louvered Hail Guard N = Precoat Al/Cu - Al/Cu — Louvered Hail Guard P = E-coat Al/Cu - Al/Cu — Louvered Hail Guard Q = E-coat Al/Cu - E-coat Al/Cu — Louvered Hail Guard R = Cu/Cu - Al/Cu — Louvered Hail Guard S = Cu/Cu - Cu/Cu — Louvered Hail Guard

Fig. 1 -- 48LC 14--26 Model Number Nomenclature (Example)

Voltage

1 = 575/3/60 5 = 208-230/3/60 6 = 460/3/60

a48--- 9335

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Fig. 2 -- Unit Dimensional Drawing – 14 Size Unit, Sheet 1 of 3

C13057

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Fig.2(cont)--UnitDimensionalDrawing–14SizeUnit,Sheet2of3

C13058

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Fig.2(cont)--UnitDimensionalDrawing–14SizeUnit,Sheet3of3

C13059

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Fig. 3 -- Unit Dimensional Drawing – 17 and 20 Size Units, Sheet 1 of 3

C13032

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Fig. 3 (cont) -- Unit Dimensional Drawing – 17 and 20 Size Units, Sheet 2 of 3

C13033

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Fig. 3 (cont) -- Unit Dimensional Drawing – 17 and 20 Size Units, Sheet 3 of 3

C13034

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Fig. 4 -- Unit Dimensional Drawing – 24 and 26 Size Units, Sheet 1 of 3

C14106

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Fig. 4 (cont) -- Unit Dimensional Drawing – 24 and 26 Size Units, Sheet 2 of 3

C14107

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Fig. 4 (cont) -- Unit Dimensional Drawing – 24 and 26 Size Units, Sheet 3 of 3

C14108

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LOCATION DIMENSION CONDITION

A 36-- -in (914 mm) • Recommended clearance for air flow and service

B 42--- in (1067 mm) • Recommended clearance for air flow and service

• No Convenience Outlet

18-- -in (457 mm)

36-- -in (914 mm)

42-- -in (1067 mm)

96-- -in (2438 mm)

D 42--- in (1067 mm) • Recommended clearance for service.

NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application planning

overhead obstruction or for vertical clearances.

•NoEconomizer

• No field--- installed disconnect on economizer hood side (Factory --- installed disconnect installed).

• Convenience Outlet installed.

• Vertical surface behind servicer is electrically non ---conductive (e.g.: wood, fiberglass).

• Convenience Outlet installed.

• Vertical surface behind servicer is electrically conductive (e.g.: metal, masonry).

• Economizer and/or Power Exhaust installed.

• Check for sources of flue products with 10 feet (3 meters) of economizer fresh air intake.

Fig. 5 -- Service Clearance Dimensional Drawing

C12384

48LC**

Base Unit 1853 (842.3) 2095 (952.3) 2201 (1000.7) 2347 (1067.0) 2492 (1132.6)

Economizer 246 (112) 246 (112) 246 (112) 246 (112) 246 (112)

Powered Outlet 35 (16) 35 (16) 35 (16) 35 (16) 35 (16)

Curb

14--- in/356 mm 240 (109) 240 (109) 255 (116) 255 (116) 273 (124)

24--- in/610 mm 340 (154) 340 (154) 355 (161) 355 (161) 355 (161)

14 17 20 24 26

Table 1 – Operating Weights

UNIT LB (KG)

Page 15

INSTALLATION

Jobsite Survey

Complete the following checks before installation.

1. Consult local building codes and the NEC (National Electrical Code) ANSI/NFPA 70 for special installation requirements.

2. Determine unit location (from project plans) or select unit location.

3. Check for possible overhead obstructions which may interfere with unit lifting or rigging.

Step 1 — Plan for Unit Location

Select a location for the unit and its support system (curb or other) that provides for the minimum clearances required for safety. This includes the clearance to combustible surfaces, unit performance and service access below, around and above unit as specified in unit drawings. See Fig. 5.

NOTE: Consider also the effect of adjacent units.

Be sure that the unit is installed such that snow will not block the combustion air intake or flute outlet.

Unit may be installed directly on wood floo rin g or on Class A, B, or C roof--covering material when roof curb is used.

Do not install unit in an indoor location. Do not locate air inlets near exhaust vents or other sources of contaminated air. For proper unit operation, adequate combustion and ventilation air must be pro vid ed in accord an ce with S ection

5.3 (Air for Combustion and Ventilation) of the National Fuel Gas Code, ANSI Z223.1 (American National Standards Institute) and NFPA (National Fire Protection Association) 54 TIA----54----84----1. In Canada, installation must be in accordance with the CAN1----B149 installation codes for gas burning appliances.

Although unit is weatherproof, avoid locations that permit water from higher level runoff and overhangs to fall onto the unit.

Locate mechanical draft system flue assembly at least 4 ft (1.2 m) from any opening through which combustion products could enter the building, and at least 4 ft (1.2 m) from any adjacent building (or per local code). Locate the flue assembly at least 10 ft (3.05 m) from an adjacent unit’s fresh air intake hood if within 3 ft (0.91 m) of same elevation (or per local code). When unit is located adjacent t o public walkways, flue assembly must be at least 7 ft (2.1 m) above grade.

Select a unit mounting system that provides adequate height to allow installation of condensate trap per requirements. Refer to Step 11 — Install External Condensate Trap and Line for required trap dimensions.

Roof Mount —

Check building codes for weight distribution requirements. Unit operating weight i s shown in Table 1.

Step 2 — Plan for Sequence of Unit Installation

The support method used for this unit will dictate different sequences for the steps of unit installation. For example, on curb--mounted units, some accessories must be installed on the unit before the unit is placed on the curb. Review the following for recommended sequences for installation steps.

Curb--mounted installation —

Install curb Install field--fabricated ductwork inside curb Install thru-- base service connection fittings (affects

curb and unit) Rig and place unit Remove top skid Install outside air hood Install smoke detector tube Install combustion air hood Install flue hood Install gas piping Install condensate line trap and piping Make electrical connections Install other accessories

Pad--mounted installation —

Prepare pad and unit supports Rig and place unit Remove duct covers and top skid Install smoke detector return air sensor tube Install field--fabricated ductwork at unit duct openings Install outside air hood Install combustion air hood Install flue hood Install gas piping Install condensate line trap and piping Make electrical connections Install other accessories

Frame--mounted installation —

Frame--mounted applications generally follow the sequence for a curb installation. Adapt as required to suit specific installation plan.

Step 3 — Inspect unit

Inspect unit for transportation damage. File any claim with transportation agency.

Confirm before i nstallation of unit that voltage, amperage and circuit protection requirements listed on unit data plate agree with power supply provided.

On units with hinged panel option, check to be sure all latches are tight and in closed position.

Locate the carton containing the outside air hood parts; see Fig. 7 and 13. Do not remove carton until unit has been rigged and located in final position.

Page 16

Step 4 — Provide Unit Support

Roof Curb Mount —

Accessory roof curb details and dimensions are shown in Fig. 8, 9 and 10. Assemble and install accessory roof curb in accordance with instructions shipped with the curb.

NOTE: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof curb as shown in Fig. 8, 9 and 10. Improperly applied gasket can also result in air leaks and poor unit performance.

Curb should be level. This is necessary for unit drain to function properly. Unit leveling tolerances are shown in Fig. 6. Refer to Accessory Roof Curb Installation Instructions for additional information as required.

Fig. 6 -- Unit Leveling Tolerances

Install insulation, cant strips, roofing fe lt, and counter flashing as shown. Ductwork must be attached to curb and

not to the unit. Thru--the--base power connection must be installed before the unit is set on the roof curb. If

field--i nstalled thru--the--roof curb gas connections are desired, remove knockout in basepan located in the gas section; see Fig. 7 for location. Gas connections and power connections to the unit must be field--installed after the unit is installed on the roof curb.

MAXIMUM ALLOWABLE

DIFFERENCE IN. (MM)

A-B

0.25” (6)

B-C

0.5” (12)

A-C

0.5” (12)

C10628

box area of access panel; see Fig. 2, 3, or 4 for basepan knockout loc ations for location. Attach the service connections to the basepan.

Hood Carton Location

(rear access panel)

Control Box

ccess Panel

Filter and

Indoor Coil

Access Panel

Indoor Blower Access Panel

Gas Heat

Access Panel

Compressor

(each side)

C11154

Fig. 7 -- Typical Access Panel and Compr es s o r Locations

Slab Mount (Horizontal Units Only) —

Provide a level concrete slab that extends a minimum of 6–in. (150 mm) beyond unit cabinet. Install a gravel apron in front of condenser c oil air inlet to prevent grass and foliage from obstructing airflow.

NOTE: Horizontal units may be installed on a roof curb if required.

Alternate Unit Support (In Lieu of Curb or Slab Mount) —

A non--combustible sleeper rail can be used in the unit curb support area. If sleeper rails cannot be used, support the long sides of the unit with a minimum of 4 equally spaced 4--in. x 4--in. (102 mm x 102 mm) pads on each side. Locate pads so that they support the rail s. Make sure to avoid the fork openings.

If electric and control wiring is to be routed through the basepan, remove knockouts in basepan located in control

Page 17

C13054

Fig. 8 -- Roof Curb Details – 14 Size Unit

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Fig. 9 -- Roof Curb Details – 17 and 20 Size Units

C13055

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Fig. 10 -- Roof Curb Details – 24 and 26 Size Units

C13056

Page 20

Step 5 — Field Fabricate Ductwork

Cabinet return-air static pressure (a negative condition) shall not exceed 0.5 in. wg (87 Pa) with economizer or without economizer.

For vertical ducted applications, secure all ducts to roof curb and building structure. Do not connect ductwork to unit.

Fabricate supply ductwork so that the cross sectional dimensions are equal to or greater than the unit supply duct opening dimensions for the first 18 in. (458 mm) of duct length from the unit basepan.

Step 6 — Rig and Place Unit

Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Table 1 (on page 14) and Fig. 11 (below) for additional information.

Lifting holes are provided in base rails as shown in Fig. 11. Refe r to riggi ng instructions on unit .

CAUTION

Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes.

Ducts passing through unconditioned spaces must be insulated and covered with a vapor barrier.

If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes.

A minimum clearance is not required around ductwork.

CAUTION

PROPERTY DAMAGE HAZARD

Failure to follow this caution may result in damage to roofing materials.

Membrane roofs can be cut by sharp sheet metal edges. Be careful when placing any sheet metal parts on such roof.

"914-1371"

(36"-54")

"B"

SEE DETAIL A

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage.

All panels must be in place when rigging. Unit is not designed for handling by fork truck when packaging is removed.

Before setting the unit onto the curb, recheck gasketing on curb.

PLACE ALL SEAL STRIP IN PLACE BEFORE PLACING UNIT ON ROOF CURB.

DUCT END

DETAIL A

"A"

UNIT

48LC**14 2135 970 127.8 3249 59.1 1501 52.3 1328

48LC**17 2377 1080 141.5 3595 65.5 1664 60.3 1532

48LC**20 2483 1129 141.5 3595 65.5 1664 60.3 1532

48LC**24 2629 1195 157.8 4007 72.8 1849 60.3 1532

48LC**26 2774 1261 157.8 4007 7208 1849 60.3 1532

NOTES:

1. Dimensions in ( ) are inches.

2. Hook rigging shackles through holes in base rail, as shown in detail “A .” Holes in b ase rails are centered around the unit center of gravity. Use wooden top to prevent rigging straps from damaging unit.

MAX WEIGHT

LB KG IN MM IN MM IN MM

"C"

C09107

DIMENSIONS

A B C

Fig. 11 -- Rigging Details

Page 21

PositioningonCurb—

Position unit on roof curb so that the following clearances are maintained: curb and the base rail inside the right and left,

/4in. (6 mm) clearance between the roof

/2in. (12 mm) clearance between the roof curb and the base rail inside the front and back. This will result in the distance between the roof curb and the base rail inside on the condenser end of the unit being approximat ely equal to Details A and B in Fig. 8, 9 and 10.

Do not attempt to slide unit on curb after unit is set. Doing so will result in damage to the roof curb seal.

Although unit is weatherproof, guard against water from higher level runoff and ove rhangs.

Flue vent dischar ge must have a minimum horizontal clearance of 48 in. (1220 mm) from electric and gas meters, gas regulators, and gas relief equipment. Minimum distance between unit and other electrically live parts is 48 inches (1220 mm).

Flue gas can deteriorate building materials. Orient unit such that flue gas will not affect building materials . Locate mechanical draft system flue assembly at least 48 in. (1220 mm) from an adjacent building or combustible material.

Field--supplied(3/4--inch) flanges should be attached to horizontal duct openings (see Fig. 12) and all ductwork should be secured to the flanges. Insulate and weatherproof all external ductwork, joints, and roof or building openings with counter flashing and mastic in accordance with applicable codes.

Step 8 — Install Outside Air Hood — Factory Option

The outside air hood for factory--option economizer is shipped in knock--down form and requires field assembly. The panel for the hood top is shipped on the end of the unit (see Fig. 13). The remaining parts for the hood assembly (including side panels, filters and tracks) are shippedinacartonthatissecuredtotherearoftheblower assembly. Access the carton location through rear panel (see Fig. 14).

Hood Top

Shipping Position

After unit is in position, remove rigging skids and shipping materials.

Step 7 — Horizontal Duct Connection

Refer to Fig. 2, 3 and 4 for locations and sizes of the horizontal duct connections. Note that there are two different return air duct connection locations – one for unit without an economizer (on back side of unit) and a different one for unit equipped with an economizer (on left end, under the economizer hood). The supply air duct connection is on the back side. See Fig. 12 for top view depicting typical horizontal duct arrangements.

C09134

Fig. 13 -- Hood Top – Shipping Position

To remove the hood parts package:

1. Remove the back blower access panel.

2. Locate and cut the strap, being careful to not damage any wiring.

3. Carefully lift the hood package carton through the back blower access opening.

See Fig. 15 for identification of the various parts of the hood assembly.

Hood

Package

Horizontal Supply Air

Supply

Location Back Back Left end

H e i g h t --- I n . ( m m ) 157/8(402) 493/8(1253) 183/8(467)

W i d t h --- i n . ( m m ) 293/4(756) 233/8(593) 615/8(1564)

Return Air Duct

Return without

Economizer

Fig. 12 -- Horizontal Duct Opening Dimensions

without

Economizer

Return Air Duct

with Economize

Return with

Economizer

C10626

C09133

Fig. 14 -- Hood Package – Shipping Location

Page 22

To assemble the outside air hood:

1. Remove hood top panel from shipping position on unit end.

2. Install four angles to the upper end panel using the screws provided.

3. Apply seal strip to mating flanges on the side plates of the hood (see Fig. 15).

pply Seal Strips to the back of these flanges

Seal Strips

Apply Seal Strip to the front of this flange

Apply Seal Strips to the back of these surfaces

Item # Description Qty 1 Angles 4 2 Side Plates 2 3 Hood 1 4 Outdoor Air Screens 4 5 Side Filter Supports 2 6 Side Drip Angles 2 7 Top Diverters 2

Apply Seal Strip to the back of this flange

Apply Seal Strip to the front of this flange

C09079

Fig. 15 -- Hood Part Identification and Seal Strip

Application Areas

Step 9 — Install Flue Hood and Combustion Air Hood

The flue hood is shipped screwed to the fan deck inside the burner compartment. Remove the burner access panel and then rem ove the flue hood from i ts shipping location. Using the screws provided, install flue hood in the location shown in Fig. 17.

The combustion air hood is attache d to the back of the burner access panel. Remove the two screws securing the hood to the back of the burner access panel. Using the two

screws, re--attach the hood to the front of the burner access panel as shown in Fig. 17.

4. Secure side plates to panel using the screws provided.

5. Apply seal strip to mating flange of the hood (see Fig. 15).

Combustion

Air Hood

Flue Hood

C10744

Fig. 17 -- Flue Hood and Combustion Air Hood Details

6. Secure top flange using screws provided in kit.

7. Install outdoor air screens by sliding them into the channel formed by the four angles install ed in step 2. Make sure that the screens extend across the entire length of the hood.

8. Install side filter supports using the screws provided.

9. Install side drip angles using the screws provided.

10. Run a continuous length of seal strip across the hood covering the engagement holes in the lower hood.

11. Install top diverter using the screws provided.

12. On units with barometric relief, remove screws at bottom of relief damper. Do not discard damper door.

C09090

Fig. 16 -- Hood Assembly – Completed

Page 23

Step 10 — Install Gas Piping

Installation of the gas piping must be in accordance with local building codes and with applicable national codes. In U.S.A., refer to NFPA 54/ANSI Z223.1 National Fuel Gas Code (NFGC). In Canada, installation must be accordance with the CAN/CSA B149.1 a nd CAN/CSA B149.2 installation codes for gas burning appliances.

This unit is factory equipped for use with Natural Gas fuel at elevations up to 2000 ft (610 m) above sea level. Unit may be field converted for operation at elevations above 2000 ft (610 m) and/or for use with liquefied petroleum fuel. See accessory kit installation instructions regarding these accessories.

NOTE: Furnace gas input rate on rating plate is for installation up to 2000 ft (610 m) above sea level. In U.S.A. the input rating for altitudes above 2000 ft (610 m) must be derated by 4% for each 1000 ft (305 m) above sea level.

For natural gas applications, gas pressure at unit gas connection must not be less than 5 in. wg (1246 Pa) or greater than 13 in. wg (3240 Pa) while the unit is operating. For liquified petroleum applications, the gas pressure must not be less than 11 in. wg (2740 Pa) or greater than 13 in. wg (3240 Pa) at the unit connection.

T able 2 – Typical

Item Qty Description

1 1 90 Deg Street Elbow

2 1 5 Inch Long Nipple

3 1 Ground--- Joint Union

4 1 3 Inch Long Nipple

5 1 90 Deg Elbow

6 1 12 Inch Long Nipple

7 1 90 Deg Elbow

8 1 3 Inch Long Nipple

9 1 TEE

10 1 4 Inch Long Nipple (Sediment Trap)

11 1 Cap

12 1 31/2Inch Long Nipple

13 1 NIBCO* Ball Valve (GB30)

14 1 8 Inch Long Nipple

15 1 90 D eg Elbow

/4--in. NPT Field Supplied Piping Parts

Pipe gas supply into 90 degree elbow item 15 (see Table 2) through the hole in the unit basepan.

For typical3/4inch NPT field supplied fittings required for NON Thru--Base gas supply starting from the unit gas valve, omit items 14 and 15 from Table 2 and pipe gas supply into TEE. See Fig. 19.

Gas Supply Line —

The gas supply pipe enters the unit adjacent to the burner access panel on the front side of the unit, through the grommeted hole. The gas connection to the unit is made

to the

Table 2 lists typical

/4in. FPT gas inlet port on the unit ga s valve.

/4inch NPT (National Pipe Thread) field supplied pipe fittings required for Thru--Base gas supply, starting from the unit gas valve (see Fig. 18).

C101006

Fig. 19 -- Gas Supply Line Piping

Table 3 – Natural Gas Supply Line Pressure Ranges

UNIT MODEL UNIT SIZE MIN MAX

48LC** 14, 17, 20, 24, 26

5.0 in. wg (1246 Pa)

13.0 in. wg (3240 Pa)

Table 4 – Liquid Propane Supply Line Pressure Ranges

UNIT MODEL UNIT SIZE MIN MAX

48LC** 14, 17, 20, 24, 26

11.0 in. wg (2740 Pa)

13.0 in. wg (3240 Pa)

Fig. 18 -- Gas Supply Line Piping with Thru--Base

C10999

Manifold pressure is factory--adjusted for natural gas (NG) fuel use. Adjust as required to obtain best flame characteristics.

Table 5 – Natural Gas Manifold Pressure Ranges

UNIT MODEL UNIT SIZE HIGH FIRE LOW FIRE

48LC** 14, 17, 20, 24, 26

* NIBCO is a registered trademark of NIBCO Inc.

3.0 in. wg (747 Pa)

2.0 in. Wg (498 Pa)

Page 24

Manifold pressure for liquid propane (LP) fuel must be

adjusted to specified range. Follow instructions in the accessory kit to make initial readjustment.

Table 6 – Liquid Propane Manifold Pressure Ranges

UNIT MODEL UNIT SIZE HIGH FIRE LOW FIRE

48LC** 14, 17, 20, 24, 26

48LCS* 14 only

CAUTION

11.0 in. wg (2740 Pa)

9.8 in. wg (2441 Pa)

7.3 in. Wg (1818 Pa)

6.5 in. Wg (1619 Pa)

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in damage to equipment.

When connecting the gas li ne to the unit gas valve, the installer MUST use a backup wrench to prevent damage to the valve.

Install a gas supply line that runs to the unit heating section. Refer to the NFPA 54/NFGC or equivalent code for gas pipe sizing data. Do not use a pipe smaller than the size specified. Siz e the gas supply line to allow for a maximum pressure drop of 0.5--in. wg (124 Pa) between gas regulator source and unit gas valve connection when unit is operating at high--fire flow rate.

The gas supply line can approach the unit in two ways: horizontally from outside the unit (across the roof), or through unit basepan. Observe clearance to gas line components per Fig. 20.

9” MINIMUM CLEARANCE

BASE UNIT

BASE RAIL

FOR PANEL REMOVAL

MANUAL GAS SHUTOFF VALVE

48” MINIMUM

ROOF CURB

NFGC – National Fuel Gas Code

Field supplied.

NOTE: Follow all local codes.

STEEL PIPE

NOMINAL DIAMETER

(in.)

or 1

or larger

LEGEND

GAS REGULATOR

DRIP LEG

PER NFGC

FABRICATED

SPACINGOFSUPPORTS

X DIMENSION

(ft)

6 8

FIELD-

SUPPORT

FROM GAS METE

C11121

Fig. 20 -- Gas Piping Guide

Factory--Option Thru--Base Connections —

Electrical Connections: Knockouts are located in the

control box area. Remove the appropriate size knockout for high voltage connection. Use the field supplied connector depe nding on wiring or conduit being utilized.

Remove the

/8--in. (22mm) knockout and appropriate

connector for low voltage wiring. If non--unit powered

convenience outlet is being utilized, remove the

/8-- i n . (22mm) knockout and utilize appropriate connector for 115 volt line. See “Step 12 — Make Electrical Connections” for details.

Gas Connections: Remove the knockout in the base pan

and route

/4--in. gas line up through the opening. Install an elbow and route gas line through opening in panel after first removing plastic bushing. Install a gas shut off followed by a drip leg and ground--joint union. Route gas line into gas section through the grommet (Part #: KA56SL112) at the gas inlet and into the gas valve. See Fig. 18 and Table 2. If a regulator is installed, it must be located 4 feet (1.22 meters) from the flue outlet.

Some municipal codes require that the manual shutoff valve be located upstream of the sediment trap. See Fig. 19 for typical piping arrangements for gas piping that has been routed through the sidewall of the base pan.

When installing the gas supply line, observe local codes pertaining to gas pipe installations. Refer to the NFPA 54/ANSI Z 223. 1 NFGC latest edition (in Canada, CAN/CSA B149.1). In the absence of local building codes, adhere to the following pertinent recommendations:

1. Avoid low spots in long runs of pipe. Grade all pipe

/4--in. in every 15 ft (7 mm in every 5 m) to prevent traps. Grade all horizontal runs downward to risers. Use risers to connect to heating section and to meter.

2. Protect all segments of piping system against physical and thermal damage. Support all piping with appropriate straps, hangers, etc. Use a minimum of one hanger every 6 ft (1.8 m). For pipe sizes larger than

/2--in., follow recommendations of national codes.

3. Apply joint compound (pipe dope) sparingly and only to male threads of joint when making pi pe connections. Use only pipe dope that is resistant to action of liquefied petroleum gases as specified by local and/or national codes. If using PTFE (Teflon*) tape, ensure the material is Double Density type and is labeled for use on gas lines. Apply tape per manufacturer’s instructions.

4. Pressure--test all gas piping in accordance with local and national plumbing and gas codes before connecting piping to unit.

NOTE: Pressure test the gas supply system after the gas supply piping is connected to the gas valve. The supply piping must be disconnected from the gas valve during the testing of the piping systems when test pressure is in excess of 0.5 psig (3450 Pa). Pressure test the gas supply piping system at pressures equal to or less than 0.5 psig (3450 Pa). The unit heating section must be isolated from the gas piping system by closing the external ma in manual shutoff valve and slightly opening the ground--joint union.

Check for gas leaks at the field--installed and factory--installed gas lines after all piping connections have been completed. Use soap--and--water solution (or method specified by local codes and/or regulations).

* Teflon is a registered trademark of DuPont.

Page 25

WARNING

FIRE OR EXPLOSION HAZARD

Failure to follow this warning could result in personal injury, death and/or property damage.

S Connect gas pipe to unit using a backup wrench to

avoid damaging gas controls.

S Never purge a gas line into a combustion chamber. S Never test for gas leaks with an open flame. Use a

commercially available soap solution made specifically for the detection of leaks to check all connections.

S Use proper length of pipe to avoid stress on gas

control manifold.

The piping for the condensate drain and external trap can be completed after the unit is in place. Hand tighten fittings to the drain pan fitting. Provide adequate support for the drain line. Failure to do so can result in damage to the drain pan. See Fig. 23.

MINIMUM PITCH 1” (25mm) PER 10’ (3m) OF LINE

TO ROOF DRAIN

BASE RAIL

OPEN VENT

3˝ (76mm)

MIN

SEE NOTE

NOTE: If orifice hole appears damaged or it is suspected to have been redrilled, check orifice hole with a numbered drill bit of correct size. Never redrill an orif ice. A bur r--free and squarely aligned orifice hole is essential for proper flame characteristics.

BURNER

ORIFICE

A93059

Fig. 21 -- Orifice Hole

Step 11 — Install External Condensate Tr ap and Line

The unit has one3/4-in. condensate drain connection on the end of the condensate pan (see Fig. 22). See Fig. 2, 3 and 4, item “E”, in the view labeled “BACK (HORIZONTAL DISCH A RG E) ” (located on sh eet 2 of 3 of each figure) for the location of the condensate drain connection.

ROOF

DRAIN PLUG

NOTE: Trap should be deep enough to offset maximum unit static difference. A 4” (102mm) trap is recommended.

CURB

C11291

Fig. 23 -- Condensate Drain Piping Details

All units must have an external trap for condensate drainage. Install a trap at least 4-in. (102 mm) dee p and protect against freeze-up. If drain line is installed downstream from the external trap, pitch the line away from the unit at 1-in. per 10 ft (25 mm in 3 m) of run. Do not use a pipe size smaller than the unit connection

/4-in.).

(

Step 12 — Make Electrical Connections

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Do not use gas piping as an electrical ground. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code); ANSI/NFPA 70, latest edition (in Canada, Canadian Electrical Code CSA [Canadian Standards Association] C22.1), and local electrical codes.

CONDENSATE DRAIN CONNECTION

Fig. 22 -- Condensate Drain Pan Connection

C10729

NOTE: Field--supplied wiring shall conform with the limitations of minimum 63_F(33_C) rise.

Field Power Supply —

If equipped with optional Powered Convenience Outlet: The power source leads to the convenience outlet’s transformer primary are not factory connected. Installer must connect these leads according to required operation of the convenience out let. If an always--energized convenience outlet operation is desire d, connect the source leads to the line side of the uni t--mounted

Page 26

disconnect. (Check with local codes to ensure this method is acceptable in your area.) If a de--energize via unit disconnect switch operation of the convenienc e outlet is desired, connect the source leads to the load side of the unit disconnect. On a unit without a unit--mounted disconnect or HACR, connect the source leads to the terminal block with unit field power leads. See Fig. 24.

BLK

YEL

BLU

LOAD

SIDE

LINE SIDE

SEE

DETAIL

CONTROL BOX

C11181

Fig. 24 -- Location of TB1

Field power wires are connected to the unit at line--side pressure lugs on the terminal block (see wiring diagram

label for control box component arrangement) or at factory--installed option non--fused disconnect switch or HACR breaker. Use copper conductors only.

NOTE: Make field power connections directly to line connection pressure lugs only.

WARNING

FIRE HAZARD

Failure to follow this warning could result in intermittent operation or unsatisfactory performance.

Do not connect aluminum wire between disconnect switch and air conditioning unit. Use only copper wire.(SeeFig.25.)

ELECTRIC

DISCONNECT

SWITCH

COPPER

WIRE ONLY

ALUMINUM

WIRE

A93033

Fig. 25 -- Disconnect Switch and Unit

Page 27

Fig. 26 -- 48LC 14--26 Electro--mechanical Control Wiring Diagram

a48--- 9336

Page 28

Fig. 27 -- 48LC 14--26 RTU Open Control Wiring Diagram

a48--- 9337

Page 29

Fig. 28 -- 48LC 14--26 SystemVut Control Wiring Diagram

a48--- 9338

Page 30

Fig. 29 -- Typical Power Wiring Diagram, Electro--mechanical and RTU Open Controls, 48LC 14--20 208/230V Shown

C14112

Page 31

Fig. 30 -- Typical Power W iring Diagram, SystemVut Controls, 48LC 26 208/230V Shown

a48--- 9339

Page 32

Units Without Factory--Installed Non--Fused Disconnect or HACR —

When installing units, provide a disconnect switch per NEC (National Electrical Code) of adequate size. Disconnect sizing data is provided on the unit informative plate. Locate on unit c abinet or within sight of the unit per national or local codes. Do not cover unit informative plate if mounting the disconnect on the unit cabinet.

Units With Factory--Installed Non--Fused Disconnect or HACR—

The factory--installed option non--fused disconnect switch (NFD) or HACR is located in the main control box. The manual switch handle and shaft are shipped in the control box and must be mounted on the corner post adjacent to the control box (see Fig. 31 or 32). Note that the tape covering the hole for the shaft in the corner post must be removed prior to handle and shaft installation.

To field install the NFD shaft and handle:

1. Open the control box panel.

2. Make sure the NFD shipped from the factory is at OFF position (the arrow on the black handle knob or on the silver metal collar is at OFF).

3. Insert the shaft with the cross pin on the top of the shaft in the horizontal position.

4. Measure the tip of the shaft to the outside surface of the corner post to be 0.88”.

5. Tighten the locking screw to secure the shaft to the NFD.

6. Turn the handle to OFF position with red arrow pointing at OFF.

7. Install the handle on to the corner post vertically with the red arrow pointing up.

8. Secure the handle to the corner post with (2) screws and lock washers supplied.

To field install the HACR shaft and handle:

1. Open the control box panel.

2. Make sure the HACR shipped from the factory is at OFF position (the white arrow pointing at OFF).

3. Insert the shaft with the cross pin on the top of the shaft in the horizontal position.

4. Measure the tip of the shaft to the outside surface of the corner post to be 0.88”.

5. Tighten the locking screw to secure the shaft to the HACR.

6. Turn the handle to OFF position with red arrow pointing at OFF.

7. Install the handle on to the corner post vertically with the red arrow pointing up.

8. Secure the handle to the corner post with (2) screws and lock washers supplied.

C12385

Fig. 31 -- Handle and Shaft Assembly for NFD

Fig. 32 -- Handle and Shaft Assembly for HACR

C12386

Page 33

All Units --

All field wiring must comply with NEC and all local code requirements.

Size wire based on MCA (Minimum Circuit Amps) on the unit informative plate. See Fig. 33 for power wiring connections to the unit power terminal block and equipment ground. Maximum wire size is 2/0 AWG per pole.

Units Without Disconnect or HACR Option

TB1

11 1 3

Disconnect

per NEC

L2 L3 Ground

208/230-3-60

460-3-60 575-3-60

Units With Disconnect or HACR Option

(GR)

Equip

GR Lug

CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage.

Operation on improper line voltage or excessive phase imbalance constitutes abu s e and may caus e damage to electrical components. Such operation would invalidate any applicable Carrier warranty.

Convenience Outlets —

WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or death.

Units with convenience outlet circuits may use multiple disconnects. Check convenience outlet for power status before opening unit for service. Locate its disconnect switch, if appropriate, and open it. Lock--out and tag--out this switch, if necessary.

Factory

Wiring

T2 T3

Optional

Disconnect

Switch

or HACR

L1 L2 L3

Equip

GR Lug

Ground

(GR)

C12387

Fig. 33 -- Power Wiring Connections

Provide a ground--fault and short--circuit over--current protection device (fuse or breaker) per NEC Article 440 (or local codes). Refer to unit informative data plate for MOCP (Maximum Over--current Protection) device size.

NOTE: Units ordered with factory--installed HACR do not need additional ground--fault and short circuit ove r current protection devic e unless required by local codes.

Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate. See Tables 26 and 27. On 3--phase units, voltages between phases must be balanced within 2% and the current within 10%. Use the formula shown in the legend for Tables 26 and 27 (see Note 3 on page 79) to determine the percent of voltage imbalance.

Tw o types of convenience outlets are offered on 48LC models: Non--unit powered and unit--powered. Both types provide a 125--volt GFCI (ground--fault circuit--interrupter) duplex receptacle rated at 15--A behind a hinged access cover, located on the corner panel of the unit. See Fig. 34.

Control Box

Access Panel

Electric

Disconnect

Switch

Convenience

Outlet

C10641

Fig. 34 -- Convenience Outle t Location

Installing Weatherp roof Cover: A weatherproof

while-in-use cover for the factory-installed convenience outlets is now required by UL standards. This cover cannot be factory-mounted due to its depth; it must be installed at unit installation. For shipment, the convenience outlet is covered with a blank cover plate.

The weatherproof cover kit is shipped in the unit’s control box. The kit include s the hinged cover, a backing plate and gasket.

DISCONNECT ALL POWER T O UNIT AND CONVENIENCE OUTLET. LOCK--OUT AN D TAG--OUT ALL POWER.

Remove the blank cover plate at the convenience outlet; discard the blank cover.

Page 34

Loosen the two screws at the GFCI duplex outlet, until

approximately

/2-in. (13 mm) under screw heads are exposed. Press the gasket over the screw heads. Slip the backing plate over the screw heads at the keyhole slots and align with the gasket; tighten the two screws until snug (do not over-tighten).

Mount the weatherproof cover to the backing plate as shown in Fig. 35. Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover. Check for full closing and latching.

COVER – WHILE-IN-USE WEATHERPROOF

RECEPTACLE NOT SHOWN

BASE PLATE FOR GFCI RECEPTACLE

C09022

Fig. 35 -- Weatherproof Cover Installation

Non--unit powered type: This type re quires the field

installation of a general--purpose 125--volt 15--A circuit powered from a source elsewhere in the building. Observe national and local codes when sel ecting wire size, fuse or breaker requirements and disconnect switch size and location. Route 125--v power supply conductors into the bottom of the utility box containing the duplex receptacle.

Code Article 210, Branch Circuits, for use of convenience outlets.

C10730

UNIT

VOLTAGE

208,

230

460 480

575 600

CONNECT

240

PRIMARY

CONNECTIONS

L1: RED +YEL L2: BLU + GRA

L1: RED Splice BLU + YEL L2: GRA

L1: RED L2: GRA

TRANSFORMER

TERMINALS

H1 + H3 H2 + H4

H2 + H3

H1 H2

Unit--powered type: A unit--mounted transformer is factory--installed to stepdown the main power supply voltage to the unit to 115--v at the duplex receptacle. This option also includes a manual switch with fuse, located in a control box and mounted on a bracket behind the convenience outlet; access i s through the unit’s control box access panel. See Fig. 34.

The primary leads to the convenience outlet transformer are not factory--connected. If local codes permit, the transformer primary leads can be connected at the line--side terminals on the unit--mounted non--fused disconnect switch; this will provide service power to the unit when the unit disconnect switch is open. See Fig. 36.

Test the GFCI receptacle by pressing the TEST button on the face of the receptacle to trip and open the receptacle. Check for proper grounding wires and power line phasing if the GFCI receptacle does not trip as required. Press the RESET button to clear the tripped condition.

Using unit--mounted convenience outlets: Units with unit--mount ed convenience outlet circuits will often require that two disconnects be opened to de--energize all power to the unit. Treat all units as electrically energized until the convenience outlet power is also checked and de--energization is confirmed. Observe National Electrical

Fig. 36 -- Powered Convenience Outlet Wiring

NOTICE/AVIS

Convenience Outlet Utilization

Maximum Intermittent Use 15 - Amps

Maximum Continuous Use 8 - Amps

Observe a 50% limit on the circuit

Loading above 8 - Amps

Utilisation de la prise utilitaire

Usage intermittent maximum 15 - Amps

Usage continu maximum 8 - Amps

Observez une limite de 50% sur le circuit

Chargement au-dessus de 8 - Amps

Fig. 37 -- Convenience Outlet Utilization Notice

HACR —

The amp rating of the HACR factory--installed option is based on the size, voltage, indoor motor and other electrical options of the unit as shipped from the factory. If field--installed accessories are added or changed in the field (i.e., power exhaust), the HACR may no longer be of the proper amp rating and therefore will need to be removed from the unit. See unit nameplate and label on factory--installed HACR for the amp rating of the HACR that was shipped with the unit from the factory. See unit

2.050HE501288

C10077

Page 35

nameplates for the proper fuse, HACR or maximum over--current protection device required on the unit with field--installed accessories.

C12105

Fig. 38 -- HACR Caution Label

Factory--Option Thru--Base Connections —

All units are equipped with the ability to bring utilities through the base.

Gas is brought up through an embossed area located in the gas section behind the gas entrance post. Access is gained through the gas access panel. A knock out must be removed to accomplish this.

The electrical entrance is located in the control box area and can be accessed through the control box access panel. An embossed area is provided with three knock outs. High voltage is brought through the multi knock out by removing the appropriate size for the size of the fitting

required. A An additional

/8--in. knock out is provided for low voltage.

/8--in. knock out is provide d for a 115 volt line which is used when the unit is equipped with the non--unit powered convenience outlet option.

All required fittings are field supplied. Install fittings when access to both top and bottom of the base pan is available. See electrical and gas connections for routing and connection information.

Units Without Thru--Base Connections —

1. Install liquid tight conduit between disconnect and control box.

2. Pull correc tly rated high voltage wires through the conduit.

3. Install power lines to terminal connections as shown in Fig. 33.

Field Control Wiring —

The 48LC unit requires an external t emperature control device such as a thermostat (field--supplied).

Thermostat —

Install a Carrier--approved accessory 3--stage thermostat according to installation instructions included with the accessory. If a 3--stage cooling thermostat is not available use a 2--stage cooling thermostat instead, but note that this

will limit cooling to just 2 stages. Locate the thermostat accessory on a solid wall in the conditioned space to sense average temperature in accordance with the thermostat installation instructions.

If the thermostat contains a logic circuit requiring 24--v power, use a thermostat cabl e or equivalent single leads of different colors with minimum of eight leads. If the thermostat does not require a 24--v source (no “C” connection required), use a t hermostat cable or equivalent with minimum of seven leads. Check the thermostat installation instructions for additional features which might require additional conductors in the cable.

For wire runs up to 50 ft (15 m), use no. 18 AWG (American Wire Gage) insulated wire (35_C minimum). For 50 to 75 ft (15 to 23 m), use no. 16 AWG insulated wire (35_C minimum). For over 75 ft (23 m), use no. 14 AWG insulated wire (35_C minimum). All wire sizes larger than no. 18 AWG cannot be directly conne cted to the thermostat and will require a junction box and splice at the thermostat.

Unit Without Thru--Base Connection Kit —

Correctly rated l ow voltage wire can be routed through the rubber grommet located on the corner post adjacent to the control box access panel. Route wire through the grommet and then route the wire behind the corner post utilizing the factory provided wire ties secured to the control box. This will insure separation of the field low voltage wire and the high voltage circuit. Route the low voltage wire to the Integrated Staging Control (ISC) board. See Fig. 39.

Typical

Thermostat

Connections

O/B/Y2

(Note 1)

Note 1: Typical multi-function marking. Follow manufacturer’s configuration Instructions to select Y2.

Note 2: Y2 to Y3 connection required for 2-stage cooling operation and when integrated economizer function is desired.

Note 3: To Connect a 2-Stage Thermostat: Y2 to Y3 connection required for 2-stage cooling operation which provides low and high cooling states.

Note 4: SystemVu 2-stage heating thermostats; it can be configured for other thermostat types.

Field Wiring

(Note 3 & 4)

(Notes 2, 3 & 4)

controller is default configured for 3-stage cooling and

Integrated Staging Control

(ISC) Board or

SystemVu

Controller

T H E R M O S T A T

a48--- 9346

Fig. 39 -- Typical Low--Voltage Control Connections

Page 36

NOTE: If utilizing the through the base connections, route the low voltage wire through the wire ties to the Integrated Staging Control (ISC) board (see Fig. 40).

Rubber

Grommet

Corner

Post

Heat Anticipator Settings —

Set heat anticipator settings at 0.14 amp for the first stage and 0.14 amp for second--stage heating.

Transformer Connection for 208--v Power Supply —

All units except 208/230-v units are fa ctory wired for the voltage shown on the nameplate. If the 208/230-v unit is

to be connected to a 208-v power supply, the control transformer must be rewired by moving the black wire

with the connection and moving it to the 208-v

/4-in. female spade connector from the 230-- v

/4-in. male

terminal on the primary side of the transformer. Refer to

unit label diagram for additional information.

RTU Open Controller (Factory--Installed Option)

Wire

Ties

Thru the Base

Connection

Fig. 40 -- Field Control Wiring Raceway

C10734

For details on operating 48LC*014--26 units equipped with the factory--installed RTU Open option refer to

48/50LC 07--26 F actory Install ed Option RTU Open Multi--P rotocol Controller Controls, Start--up, Operation and Troubleshooting.

SystemVut Controller (Factory--Installed Option)

For details on operating 48LC*014-26 units equipped with the factory-installed SystemVu control option refer to



48/50LC 04-26 Single Package Rooftop Units with SystemVu Controls Version 2.X Controls, Start-up, OperationandTroubleshootingmanual.

618

Page 37

Humidi--MiZerRSystem Control Connections

NOTE: It is suggested to ensure the Auto--Changeover

function of an installed thermostat is enabled when used in conjunction with the Humidi--MiZer Adaptive Dehumidification system.

Humidi--MiZer System – Space RH Controller —

The Humidi--MiZer dehumidification sys tem requires a field--supplied and installed space relative humidity contr ol device. This device may be a separate humidistat control (contact closes on rise in space RH above control setpoint) or a combination thermostat--humidistat control device with isolated contact set for dehumidification control.

NOTE: Use of a humidistat device is not permitted on 48LC units equipped with R TU Open control; these units require use of a field--supplied RH sensor (33ZCSENSRH--02 or 33ZHCSENDRH--02), or a ZS series sensor with humidity sensing. SystemVut controls requires a Space Humidistat (HL38MG029) or a W all Mount Space Humidity Sensor (33ZCSENSRH--01) or a Duct Mount Humidity Sensor (33ZCSENDRH--01).

To connect the Carrier humidistat (HL38MG029):

1. Route the humidistat 2--conductor cable (field--supplied) through the hole provided in the unit corner post.

2. Feed wires through the raceway built into the corner post (see Fig. 40) to the 24--v barrier located on the left side of the control box. The raceway provides the ETL--required clearance between high--voltage and low--voltage wiring.

3. Us e wire nuts to connect humidistat cable to two PINK leads in the low–voltage wiring as shown in Fig. 42.

% RELATIVE HUMIDITY

C09295

Fig. 41 -- Accessory Field--Installed Humidistat

NOTE: 48LC**014 -- 26 units require a 3--stage cooling

thermostat device and are not compatible with Carrier’s

Edge

Pro thermidistat.

Humidistat

Fig. 42 -- Typical Humidi--MiZer Adaptive Dehumidification System Humidistat Wiring

C14113

Page 38

Integrated Staging Control (ISC) Board

Economizer

DDC

Control

DDC

Control

Indoor Fan

“On” Status

IGC

Board

Power

Plug

Phase

Monitor

Relay

Auxilary

Shutdown

Condensate

Overflow

Remote

Shutdown

Smoke

Shutdown

Smoke

Alarm

Occupancy

Status Code LEDs

Thermostat

Outdoor Fan

Motors

Fig. 43 -- Integrated Staging Control (ISC) Board

ISC Board -- Sequence of Operation

General —

The Carrier Integrated Staging Control (ISC) is inte nded for use with a standard thermostat or direct digital controls (DDC) capable of three cooling stages. After initial power to the board, a Green LED will blink with a 1 second duty cycle indicating the unit is running properly. In the event of the ISC board failing, the Green LED will be OFF or continuously ON. When the unit is not running properly, the Green LED will blink along with Red LED lights. The Red LED light configuration will indicate the t ype of error the board has identified. See Fig. 43 for LED locations and Table 7 for a list of status codes.

The ISC board can be remotely shutdown by removi ng Jumper 4 and wiring to the Remote Shutdown terminal. The Smoke Control Module can shutdown the unit by removing Jumpe r 3 and wiring to the Smoke Shutdown terminal. The Smoke Alarm terminal on the ISC Board

Low Ambient

Outdoor Fan

Control

Compressors

Reheat

Low-Pressure

Switch

Indoor Fan

Motor

High-Pressure

Switch

a48--- 9321

provides a pass thru connection should a smoke alarm signal be connected. In the case of the RTU Open option, the RTU Open controller provides the signal which is passed thru the ISC board to the Smoke Alarm terminal.

The crankcase heater will run at all times except when the compressors are running. An auxiliary power supply (24Vac) available at TB--4 Terminal is provided to power auxiliary equipment. An optional Phase Monitor Relay can be wired to the PMR terminal by removing Jumpe r 5. An optional Condensate Flow Switch can be wired to the COFS Terminal by removing Jumper 7.

Ventilation —

In the Ventilation/Fan Mode (G on the thermostat), the indoor--fan will run at low speed and the damper will operate at minimum position.

Page 39

Table 7 – Status Code Descriptions for ISC Board LEDs

ERROR# ERROR NAME

1 Check Smoke Detector/PMR/AUX RED

2 Check HPS/LPS/COFS RED RED

3 Call for Y3 with no call for Y1. Check Y1 wiring. RED

4 Call for Y3 with no call for Y1/Y2. Check Y1 wiring. RED RED

5 Call for Y2 with no call for Y1. Check Y1 wiring. RED RED

6 Call for W2 with no call f or W1. Check W1 wiring. RED RED

7 Call for heat (W1/W2) and cooling (Y1/Y2/Y3). Check thermostat wiring. RED RED RED RED

8 Call for heat (W1/W2) with no IFM. Check G wiring. RED RED RED

9 Call for cooling (Y1/Y2/Y3) with no G. Check G wiring RED RED RED

Call for heat (W1/W2) and cooling (Y1/Y2/Y3) with no G.

Check thermostat and G wiring.

11 Check ISC Board and the thermostat wiring RED RED RED

Call for Economizer Y1 Feedback (ECON) from economizer with no call

for Y1 from thermostat. Check thermostat and economizer wiring.

13 Check ISC Board and the thermostat wiring RED RED

14 Check ISC Board and the thermostat wiring RED

15 Check ISC Board and the thermostat wiring RED RED

NOTES: 1. Green LED Blinking at 1HZ indicates normal operation.

2. Solid red LED indicates an error exists, see above LED configuration.

LED01 LED02 LED03 LED04 LED05

RED RED RED

RED

LED INDICATION

Blinking

Green

LED

(Note 1)

Cooling —

In the Cooling Mode, the small and large compressors will be sequenced to maintain the thermostat temperature setpoint. The chart below shows the cooling operation based on t he following conditions.

INPUT OUTPUT

Thermostat

First Stage Cooling

(Y1)

Second Stage Cooling

(Y2)

Third Stage Cooling

(Y3)

Compresso rC1Compresso r

On Off Low

Off On Medium

On On High

Indoor

Fan

Speed

Outdoor

Fan

Speed

Low

(700 rpm)

Medium

(800 rpm)

High

(1000 rpm)

The outdoor fan and VFD controlled indoor--fan will operate at low, medium and high speed. The indoor-- fan speed (rpm) is factory set by the CFM and static pressure requirements for the unit installed.

Humidi--MiZer

System (Optional) —

In the Dehumidification Mode, both compressors will run and Indoor a irflow will be rise to High Speed.

At subcooler reheating mode (reheat--1), during part load conditions when the room tempera ture and humidity are above the set point, the unit initiates the sub--cooling mode of operation; a call for cooling and dehumidificat ion. RDV (Reheat Discharge Valve) and TWV (Three Way Valve) close; Indoor and Outdoor airflow will rise until reaching 100% of Speed.

At hot--gas--bypass reheating mode (reheat--2), when there is a call for dehumidification without a call for cooling, a portion of the hot gas from the com pressor bypasses the condenser coil when RDV opens and hot gas is fed into the liquid line, TWV closes in this mode and the system provides mainly latent cool ing. Indoor a irflow will rise until reaching 100% of Speed, Outdoor airflow will run at

High speed as long as outdoor temperature is above 80_F (26.7_C); when operating in this mode be low 80_F (26.7_C) OAT, the system outdoor fan will operate as shown in the table below based on Size:

LC Size RPM Number of Fans On Number of Fans Off

14 250 3 0

17 250 4 0

20 160 4 0

24 250 6 0

26 250 6 0

Economizer (Optional) —

When the economizer is in Free Cooling Mode and a demand for cooling exists (Y1 on the thermostat), the economizer will modulate the outdoor--air damper to provide a 50_F(10_C) to 55_F(13_C) mixed--air temperature into the zone and run the indoor--fan at high speed. As mixed--air temperature fluctuates above 55 ºF (13_C) or below 50_F(10_C) dampers will be modulated (open or close) to bring the mixed--air temperature back within control. Upon more call for cooling (Y2 on the thermostat), the outdoor--a ir damper will maintain its current position, compressor C1 will run and the outdoor--fan will run at l ow speed. If there is further demand for cooling, the outdoor--air damper will maintain its current position, compressor C2 will run and the outdoor--fan will run at medium speed. The VFD controlled indoor--fan will operate at high speed regardless of the cooling demand.

If the increase in cooling capacity causes the mixed--air temperature to drop below 45_F(7_C), the outdoor--air damper will return to the minimum position. If the mixed--a ir temperature continues to fall, the outdoor--air damper will close. Control returns to normal once the mixed--a ir tem perature rises above 48_F(9_C). The power exhaust fans will be energized and de--energized, if installed, as the outdoor--air damper opens and closes.

Page 40

In field--installed accessory CO2sensors are connected to the Economizer, a demand controlled ventilation strategy will begin to operate. As the CO increases above the CO

set--point, the minimum position

level in the zone

of the damper will be increased proportionally. As the

level decreases because of the increase of fresh air,

the outdoor--air damper will be proportionally closed. For economizer operation, there must be a thermostat call for the fan (G). If the unit is occupied and the fan is on, the damper will operate at minimum position. Otherwise, the damper will be closed.

Low Ambient Cooling Operation Down to 40_F(4_C)—

In Low Ambient RTU conditions when the temperature is between 55_F(13_C) and 40_F(4_C), the Low Ambient Switch (LAS) will be active and the outdoor fans will run to the pre--set factory outdoor--fan speed. When the temperature is greater than 65_F(18_C), the Low Ambient Switch will deactivate and the outdoor fans will run in the standard cooling mode. If the Outdoor Fan Select Switch (see Fig. 44) is in the ON position, the outdoor fans will run in the Fan Cycle Speed Mode (FCS) set to 250 rpm. If the Outdoor Fan Select Switch is in the OFF posit ion, the outdoor fans will run in the Minimum Fan Speed Mode (MIN) set to 160 rpm regardless of the cooling demand.

LC Size 14 through 26 units have a SPST normally open Low Ambient Switch wired acros s the TS and OF terminal and a jumper placed across the PS terminal (see Fig. 45). When the LAS is active, the switch will clos e making contact to the OF terminal. This is done for units that require all outdoor fans to run at the same pre--set factory Low Ambient Speed.

OF SPEED

SELECT

FCS

MIN

OFF

a48--- 9341

Fig. 44 -- Outdoor Fan Speed Select Switch

JUMPER ON

PS PS

TS OF

LAS

SPST

C13328

Fig. 45 -- Schematic of SPST Low Ambient Switch

The Low Ambient Tempera ture Outdoor Fan Control Table (below) shows the operation of the outdoor fan for each unit.

T able 8 – Low Ambient Temperatur e Outdoor Fan Control

LC Size

14 3 0 SPST Up 250

17 4 0 SPST Up 250

20 4 0 SPST Up 250

24 6 0 SPST Up 250

26 6 0 SPST Up 250

No. of

Fans On

No. of

Fans Off

Switch

Outdoor Fan

Select Switch

RPM

Heating —

In the Heating Mode (W1 and G on the thermostat), the ISC board sends power to W on the IGC boa rd. Assuming the unit is controlled through a room thermostat set for fa n auto, the indoor--fan motor will energize and the outdoor--air dampers will open to t heir minimum position. The ISC board upon seeing W1 and G ON will turn the indoor fan to high speed.

The IGC board starts its gas ignition process. A check is made to ensu re that the rollout sw itch and limit switch are closed. If the check was successful, the induced draft motor is energized, and when its speed is satisfactory, as proven by the flue gas pressure switch, the ignition activation period begins. The burners will ignite within 5 seconds. If the burners do not light, there is a 22--second delay before another 5--second attempt. This sequence is repeated for 15 minutes or until the burners light. If, after the 15 minutes, the burners still have not lit, heating is locked out. To reset the control, break 24VAC power to the thermostat.

When gas ignition occurs, the IGC board will continue to monitor the condition of the rollout switch, the limit switches, the flue gas pressure switch, as well as the flame sensor.

When W1 is turned OFF, the IGC board turns off the gas valve. The IGC board has a delay time before it turns IFO=OFF. At this time, the ISC board sees W1=OFF and IFO=ON. The ISC will keep the indoor fan ON high speed. Once the IGC board delay times out, the ISC board will see W1=OFF and IFO=OFF, which then turns the indoor fan OFF.

If the call for W1 lasted less than 1 minute, the heating cycle will not terminate until 1 minute after W1 became active. If the unit is controlled through a room thermostat set for fa n auto, the indoor fan motor will continue t o operate for a n additional 45 seconds then stop. If the over temperature limit opens after the indoor motor is stopped, but within 10 minutes of W1 becoming inactive, on the next cycle the time will be extended by 15 seconds. The maximum delay is 3 minutes. Once modified, the fan OFF delay will not change back to 45 seconds unless power is reset to the control. A LED indicator is provided on t he IGC to monitor operation.

When additional heat is required, W2 closes and initiates power to the second stage of the main gas valve. When the thermostat is satisfied, the gas valve closes, interrupting the flow of gas to the main burners.

Page 41

EconoMi$erRX (Factory--Installed Option)

EconoMi$er X is an economizer system which is available for 48LC 14--26 units.

The factory--installed option consists of:

S Either a Low leak or a Standard leak economizer

damper assembly

S Direct--drive damper actuator with local equipment bus

communications

S W7220 ec onomizer controller with keypad and display

S Supply Air Temperature sensor (20K ohm)

S Outdoor changeover condition sensor (either 20K ohm

dry--bulb or enthalpy sensor)

Unit Installation —

All damper hardware and standard economizer control components except the enthalpy sensor are factory--mounted in their operating location. Complete the unit installation by relocating the enthalpy sensor (when provided; see below), then assembling and mounting the unit’s outside air hood. Refer to the base unit’s installation instruction manual for directions on locating the hood parts package and assembling the hood with filters.

Enthalpy Sensor Relocation —

See Fig. 54 for view of the enthalpy sensor. Locate the enthalpy sensor on the side of the economizer housing; remove mounting screws and save screws. Confirm the DIP switches are set at OFF, OFF, OFF (see Table 16). Move the enthalpy sensor to the front face of the economizer housing and mount per label.

W7220 Economizer Controller

The economizer controller used on electro mechanical units is the Honeywell W7220.

The W7220 provides typical economizer functions, including:

S Management of outside air damper for base unit

Occupied (damper open and modulating) and unit OFF or Unoccupied status (damper closed)

S Free--cooling using all out side air when out door

conditions permit Integrated cooling operation using outside air and mechanical cooling when required

S Demand Controlled Ventila tion (DCV) for modulating

ventilation airflow according to space CO (requires factory--option or field --installed CO

The W7220 control also includes a new capability that will adjust the damper control points during DCV or minimum ventilation operation as the indoor fan speed is changed. This control function ensures that required space ventilation airflow quantities are maintained during redu ced fan speed operation.

Additional control capabilities include automatic detection of new sensors and detection of sensor failure or loss of communication.

level

sensor)

The W7220 control module includes an integral user interface with keypad and LCD display that permits direct input of setpoint values and configurations and display of status and alarms.

The W7220 controller is located in the RTU base unit’s Control Box. See the Installation Instructions for this base unit for the location of the Control Box access panel.

User Interface —

The user inte rface consists of a 2--line LCD display and a 4--button keypad on t he front of the economizer controller.

2 LINE

LCD

MENU UP

(EXIT)

BUTTON

SCROLL UP/DOWN BUTTONS

SELECT (ENTER) BUTTON

C14206

Fig. 46 -- W7220 Controller

Keypad

The four navigation buttons (see Fig. 46) are used to scroll through the menus and menu items, select menu items, and to change parameter and configuration settings.

Using the Keypad with Menus

To use the keypad when working with menus:

S Press the

(Up arrow) button to move to the previous

menu.

S Press the

(Down arrow) button to move to the next

menu.

S Press the

(Enter) button to display the first item in

the currently displayed menu.

S Press the

(Menu Up/Exit) button to exit a menu’s

item and return to the list of menus.

The Menus in display order are:

S STATUS

S SETPOINTS

S SYSTEM SETUP

S ADVANCED SETUP

S CHECKOUT

S ALARMS

Page 42

Using the Keypad with Settings and Parameters

To use the keypad when working with Setpoints, System and Advanced Settings, Checkout tests and Alarms:

9. Press the menu parameter.

10. Press the (MenuUp/Exit)buttontoreturntothe previous menu.

1. Navigate to the desired menu.

2. Press the the currently displayed menu.

3. Use the rameter.

4. Press the currently displayed item.

5. Press the

(Enter) button to display the first item in

and buttons to scroll to the desired pa-

(Enter) button to display the value of the

button to increase (change) the displayed

Menu Structure

IMPORTANT : Tab le 9 illustrates the complete hierarchy.

Your menu parameters may be different depending on your configuration. For example if you do not have a DCV (CO appear .

) sensor, then none of the DCV parameters

parameter value.

6. Press the

button to dec r ease (change) the displayed

parameter value.

NOTE: When values are displayed, pressing and

holding the

or button ca uses the

display to automatically increment.

7. Press the

(Enter) button to accept the displayed

value and store it in nonvolatile RAM.

8. “CHANGE STORED” displays.

The menu hierarchy has been modified to reflect controller configuration for 2--speed indoor fan application in the Staged Air V olume option.

NOTE: Some parameters in the menus use the letters MA or M AT, indicating a mixed air temper atur e sensor location before the cooling coil. This unit application has the control sensor located after the cooling coil, in the fan section, where it is designated as (Cooling) Supply Air Temperature or SAT sensor.

Table 9 – Menu Structure*

Parameter

Menu Para meter

STATUS ECON AVAIL NO YES/NO ECONOMIZING AVAILABLE

ECONOMIZING NO YES/NO ECONOMIZING ACTIVE

OCCUPIED NO YES/NO OCCUPIED

HEAT PUMP n/a** COOL

COOL Y1 - -- IN OFF ON/OFF FIRST STAGE COOLING D EMAND (Y1 ---IN)

COOL Y1 - -- OUT OFF ON/OFF FIRST STAGE COOLING RELAY OUTPUT

COOL Y2 - -- IN OFF ON/OFF SECOND STAVE COOLING DEMAND (Y2- -- IN)

COOL Y2 - -- OUT OFF ON/OFF SECOND STAGE COOLING RELAY OUT PUT

MA TEMP nn_F(or_C) 0 to 140_F

DA TEMP nn _F(or_C) 0 to 140_F

OA TEMP nn_F(or_C) --- 40 to 140_F

OA HUM nn% 0 to 100% OUTSIDE AIR RELATIVE HUMIDITY

RA TEMP nn_F(or_C) 0 to 140_F

Default

Value

Parameter

Range and Increment

HEAT

(---18 to 60_C)

(---40 to 60_C)

(---18 to 60_C)

{

YES = economizing available; the system can use outside air for free cooling when required

YES = Outside air being used for Cooling Stage 1. NO = Economizi ng not active

YES = OCC signal received from space thermostat or unitary controller. YES = 24 Vac on terminal OCC. NO = 0 Vac on terminal OCC.

HEAT PUMP MODE (Not available on 2- -- Speed configuration)

Y1---I signal from space thermostat or unitary controller for Cooling Stage 1. ON = 24 Vac on terminal Y1- -- I OFF = 0 Vac on terminal Y1- -- I

ON = 24 Vac on terminal Y1- -- O; Stage 1 mechanical cooling called on OFF = 0 Vac on terminal Y1 - --O; no mechanical cooling

Y2---I signal from space thermostat or unitary controller for Cooling Stage 2. ON = 24 Vac on terminal Y2- -- I OFF = 0 Vac on terminal Y2- -- I

ON = 24 Vac on terminal Y2- -- O; Stage 2 mechanical cooling called on OFF = 0 Vac on terminal Y2- --O; no Stage 2 mechanical cooling

SUPPL Y AIR TEMPERATURE, Cooling Mode Displays value of measured mixed/cooled air from SAT sensor in fan section. D isp l a y s --- --- . --- if n o t c o n n e c t e d, s h o r t o r o u t --- of --- r a n g e . S e e M e n u N o t e 2

DISCHARGE AIR TEMPERA TUR E, after Heating section (Accessory sensor required) Displays wh en Discharge Air sen sor is connected and displays measured discharg e temperat ure. D isp l a y s --- --- --- --- --- --- if s e n s o r sen ds i n v a l i d v a l u e , i f n o t connecte d , s h o r t or out---of- --range.

OUTSIDE AIR TEMPE RATURE Displays measured value of outdoor air temperature. D isp l a y s --- --- --- --- --- --- if s e n s o r sen ds i n v a l i d v a l u e , i f n o t connecte d , s h o r t or out---of- --range.

Display s measured value of outdoor humidity from OA enthalpy sensor.

RETURN AIR TEMPERATURE (Accessory sensor required) Displays measured value of return air temperature from RAT sensor.

EXPAN DED PARAM ETER NAME

(Enter) button to return to the current

Notes

Page 43

Menu Para meter

Parameter

STATUS

RA HUM nn% 0 to 100% RETURN AIR RELATIVE HUMIDITY

(cont)

IN CO2 ___ppm 0 to 2000 ppm SPACE/RETURN AIR CO2

DCV STATUS n/a ON/OFF DEMAND CONTRO LLED VENTILATION STATUS

DAMPER OUT 2.0V 2.0 to 10.0V Disp lays voltage output to the damper actuator .

ACT POS nn% 0 to 100% Displays actual position of outdoor air damper actuator

ACT COUNT n/a 1 to 65535 Displays number of times actuator has cycled.

ACTUATOR n/a OK /Alarm

EXH1 OUT OFF ON/OFF EXHAUST STAGE 1 RELAY OUTPUT

EXH2 OUT OFF ON/OFF EXHAUST STAGE 2 RELAY OUTPUT

MECH COOL ON 0 0, 1, or 2 Displays stage of mechanic al cooling that is active.

FAN SPEED n/a LOW or HIGH SUPPLY FAN SPEED

W(HEATON) n/a ON/OFF HEAT D EM AND STATUS

SETPOINTS MAT SET 53_F

(12_C)

LOW T LOCK 32_F

(0_C)

DRYBLB SET 63_F

(17_C)

ENTH CURVE ES3 ES1, ES2, ES3, ES4, or

DCV SET 1100ppm 500 to 2000 ppm;

MIN POS L 6.0 V 2to10Vdc VENTILATION MINIMUM POSITION AT LOW SPEED

MIN POS H 4.4 V 2to10Vdc VENTILATION MINIMUM POSITION AT HIGH SPEED

VENTMAX L 6.0 V 2to10Vdc DCV MAXIMUM DAMPER POSI TION AT LOW SPEED

VENTMAX H 4.4 V 2to10Vdc DCV MAXIMUM DAMPER POSITI ON AT HIGH SPEED

VENTMIN L 3.7 V 2to10Vdc DCV MINIM UM DAMPER POSITION AT LOW SPEED

VENTMIN H 2.8 V 2to10Vdc DCV MINIMUM DAMPER POSITION AT HIGH SPEED

EXH1 L SET 65% 0 to 100%;

EXH1 H SET 50% 0 to 100%;

Default

Value

Table 9 -- Menu Structure* (cont)

Parameter

Range and Increment

(on Alarm menu)

38 to 65_F; (3 to 18_C) increment by 1

---45 to 80_F;

(---43 to 27_C) increment by 1

48 to 80_F (9 to 27_C) increment by 1

ES5

increment by 100

Increment by 1

{

(Accessory enthal py sensor required) Display s measured value of return air humidi t y from RA sensor .

(CO

sensor required, accessory or factory option)

Displays value of measured CO Invalid if not connected, short or out ---of ---range

sensor required, accessory or factory option)

(CO

Display s ON if IN CO setpoint DCV SET.

0% = OSA Damper fully closed 100% = OSA Damper full open

2.0V = OSA Damper fully ---closed

10.0V = OSA Damper full open

1 Cycle equals accrued 180_ of actuator movement in any direction

Displays Error if voltage or torque is below actuator range

Output of EXH1 terminal: ON = relay closed OFF = relay open

Output of AUX terminal; displays only if AUX = EXH2 ON = relay closed OFF = relay open

Displays speed setting of fan on a 2 -- -speed fan unit.

Displa ys status of heat demand on a 2---speed fan unit.

SUPPLY AIR SETPOINT Setpoint determines where the economizer will modulate the OA damper to maintain the mixed air temperature. SeeMenuNote2.

COMPRESSOR LOW TEMPERATURE LOCKOUT Setpoint determines outdoor temperature when the mechanical cooling cannot be turned on.

OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT Setpoint determines where the economizer will assume outdoor air temperature is good for free cooling; e.g.: at 63_F(17_C), unit will economize at 62_F (16.7_C) and below and not economize at 64_F (17.8_C) and above. There is a 2_F(1.1_C)deadband. SeeMenuNote3

ENTHALPY CHANGEOVER CURVE (Requi res enthalpy sensor option) Enthalpy boundary “curves” for economizing using single enthalpy.

DEMAND CONTROLLED VENTILA TION SETPOINT Displays only if CO Ventilation of space. Above the setpoint, the OA dampers will modulate open to bring in additional OA to maintain a space ppm level below the setpoint.

Display s ONLY if a CO

(Requires CO

EXHAUST FAN STAG E 1 SETPOINT AT LOW SPEED Setpoi nt for OA damper position when exhaust fan1 is powered by the economizer

EXHAUST FAN STAGE 1 SETPOINT AT HIGH SPEED Setpoi nt for OA damper position when exhaust fan1 is powered by the economizer

EXPAN DED PARAM ETER NAME

Notes

from CO2sensor.

value above setpoint DCV SET and OFF if below

sensor is connected . Setpoint for Demand Controlled

sensor is NOT connected.

sensor connect e d )

Page 44

Menu Para meter

SETPOINTS (cont)

SYSTEM SETUP

ADVANCED SETUP

EXH2 L SET 80% 0 to 100%;

EXH2 H SET 75% 0 to 100%;

INSTALL 01/01/10 Display order = MM/DD/YY

UNITS DEG _F _For_C Sets economizer controller in degrees Fahrenheit or Celsius.

EQUIPMENT CONV Conventional or HP CONV = conventiona l;

AUX 2 I W W required for 2 ---speed

FAN TYPE 2speed 2speed required Sets the economizer controller for operation of 1 speed or 2 speed indoor

FAN CFM 5000cfm 100 to 15000 cfm;

AUX OUT NONE NONE

OCC INPUT INPUT or ALWAYS OCCUPIED MODE BY EXTERNAL SIGNAL

FACTORY D EFAULT NO NO or YES Resets all set points to factory defaults when set to YES. LCD will briefly

MA LO SET 45_F

FREEZE POS CLO CLO or MIN FREEZE PROTECTION DAMPER POSITION

CO2 ZERO 0ppm 0 to 500 ppm:

CO2 SPAN 2000ppm 1000 to 3000 ppm;

STG3 DLY 2.0h 0 min, 5 min, 15 min,

SD DMPR POS CLO CLO or OPN Function NOT AVAILABLE with 2 -- -speed mode

DCVCAL ENA MAN MAN (manual) Turns on the DCV automati c control of the dampers. Resets ventilati on.

MATTCAL 0.0_F

OA T CAL 1.0_F

OA H CAL 0% RH + / --- 1 0 % R H OUTSIDE AIR HUMIDITY CALIBRATION

RA T CAL 2.0_F

RA H CAL 0% RH + / --- 1 0 % R H RETURN AIR HUMIDITY CALIBRATION

DA T CAL 0.0_F

2SP FAN DELAY 5 Minutes 0to20minutesin

Parameter

Default

Value

(7_C)

(or C)

Table 9 -- Menu Structure* (cont)

Parameter

Range and Increment

Increment by 1

mode

increment by 100

EXH2 SYS

35 to 55_F; (2 to 12_C) Incremented by 1_

Increment by 10

Increment by 50

then 15 min intervals. Up to 4 h or OFF

+ / --- 2 . 5 _F ( + / --- 1 . 4 _C)

1 minute increments

{

EXHAUST FAN STAG E 2 SETPOINT AT LOW SPEED Setpoi nt for OA damper position when exhaust fan1 is powered by the economizer . Only used when AUX1- --O is set to EHX2.

EXHAUST FAN STAGE 2 SETPOINT AT HIGH SPEED Setpoi nt for OA damper position when exhaust fan1 is powered by the economizer . Only used when AUX1- --O is set to EHX2.

Setting order = DD, MM, then YY .

HP O/B = Enable Heat Pump mode. Not available with 2 --- speed SeeMenuNote4

W = Informs controller that system is in heating mode. SD = Enables configuration of shutdown (not available on 2 ---Speed) SeeMenuNote4

fan system. SeeMenuNote4.

UNIT DESIGN AIRFLO W (CFM) Enter ONL Y of using DCVCAL ENA = AUTO The value is found in the Project Submittal documents for the specific RTU.

Select OUTPUT for AUX1 O relay NONE = not configured (output is not used) EXH2 = second damper position r elay closure for second

SYS = use output as an alarm signal

When using a setbac k thermos t at with occupancy out (24 Vac), the 24 Vac is input to the OCC terminal. RTU control circuit provid es 24 --- Vac to OCC through OCCUPIED terminals on Integrated Staging Control. Board

flash YES and change to NO but all parameters will change to the factory default values. RECHECK AUX2 I and FANTYPE for required 2- --speed

values.

SUPPLY AIR TEMPERATURE LOW LIMIT Te mperat ure to achieve Freeze Protection (close damper and alarm if temperat ure falls below setup value)

Damper position when freeze protection is active CLO = closed MIN = MIN POS or VENTMAX

CO2ppm level to match CO2Sensor start level.

CO2ppm span to match CO2sensor.

COOLING STAGE 3 DELAY Delay after stage 2 for cool has been active. Turns on 2 when economizer is 1

SUPPLY AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration supply air temperat ure (SAT) sensor

OUTSIDE AIR TEMPE RATURE CAL IBRATION Allows for the operator to adjust for an out of calibration outside air temperat ure (OAT) sensor

Allows for the operator to adjust for an out of outside air enthalpy sensor

RETURN AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration return air temperature (RA) sensor

Allows for the operator to adjust for an out of calibration return air enthalpy sensor

DISCHARGEAIRTEMPERATURECALIBRATION Allows for the operator to adjust for an out of calibration discharge air temperat ure (DAT) sensor

TIME DELAY ON 2ndSTAGE ECONOMIZING While in the Econ omizing mode, this is the delay between thermostat Y2 call and Y1---O output to mechanical cooling stage, to allow high speed fan operation to attempt to cool space first.

exhaust fan

EXPAN DED PARAM ETER NAME

stage and mechanical cooling is 2

Notes

stage of cooling

Page 45

Table 9 -- Menu Structure* (cont)

Parameter

Menu Parameter

CHECKOUT DAMPER VMIN .HS n/a n/a Positions OA damper to VMIN High Speed position

DAMPER VMAX .HS n/a n/a Positions OA damper to VMAX High Speed position

DAMPER OPEN n/a n/a Pos i ti ons OA damper to the full open position.

DAMPER CLOSE n/a n/a Positions damper to the fully closed position

CONNECT Y1--- O n/a n/a C l o s e s the Y1 --- O r e l ay ( Y 1 --- O)

CONNECT Y2--- O n/a n/a C l o s e s the Y2 --- O r e l ay ( Y 2 --- O)

CONNECT AUX1O n/a n/a Energizes the AUX1O output. If Aux setting is:

ALARMS(_) Alarms display only when they are active. The menu title “ALARMS(_)”

MA T SENS ERR n/a n/a SUPPLY AIR TEMPERATURE SENSOR ERROR

CO2 SENS ERR n/a n/a CO2 SENSOR ERROR

OA T SENS ERR n/a n/a OUTSIDE AIR T EMPERATURE SENSOR ERROR

OA SYLK SENS ERR n/a n/a OUTSIDE AIR T EMPERATURE SENSOR ERROR

DA T SENS ERR n/a n/a DISCHARGE AIR TEMPERATURE SENSOR ERROR

SYS ALARM n/a n/a When AUX is set to SYS and there is any alarm (e.g., failed sensors,

ACT UNDE R V n/a n/a ACTUATOR VOLTAGE LOW

ACT OVER V n/a n/a ACTUATOR VOLTAGE HIGH

ACT STALLED n/a n/a ACTUATOR STALLED

* Table 9 illustrates the complete hierarchy, your menu parameters may be different depending on your configuration.

For exampl e if you do n ot have a DCV ( CO

{

When values are displayed, pressing and holding the Y or B button causes the display to automatically increment.

** n/a = not applicable

{{

ERV Operation: When in Cooling mode AND the conditions are NOT OK for economizing --- the ERV terminal will be en er gized. In the Heating mode the ERV terminal will be energized when the OA is below the ERV OAT setpoint in the setpoint menu.

Menu Notes

1 S T A T U S --- > O C C U P I E D – Th e factory-standard Occupancy signal originates with a thermostat or other controller call for indoor fan operation at ISC

terminal G. This signal passes thr ough the Integrated Staging Con trol Board’s OCCUPIED ju mper JMP1 to the E CONO connector and to the W7220’s OCC input terminal. An external timeclock or relay is required to implement an Occupancy schedule on the economizer damper position.

2 STATUS -> MA TEMP, SETP O IN TS -> MAT SET – The W7220 menu parameters and labels include designations MA, MAT an d Mixed Air for the eco-

nomizer cooling control sensor. On these rooftop units, the economizer control sensor is located downstream of the evaporator/indoor coil in the supply fan section wher e this sen so r is design a te d as Su pply Air Temper a ture (S AT) sensor.

3 SETPOINTS -> DRYBLB SET – This point is not displayed if a Return Air (differential) temperature sensor or an Outdoor Air enthalpy sensor is connected. 4 SYSTEM SETUP parameters must be configured as noted for 2-Speed unit operation:

EQUIPMENT =CONV AUX2 I =W FAN TYP E = 2SPEED

Default

Value

) sensor, then none of the DCV parameters appear.

Parameter

Range and Increment

{

S NONE --- n o t action taken S ERV --- 24 Vac out. Turns on or signals an ERV that the conditions

are not good for economizing but are good for ERV operation.

S S Y S --- 2 4 V a c o u t . I s s u e s a s y s t e m a l a r m

includes the number of active alarms in parenthesis ( ).

OAT sensor connected at input terminals OAT

OAT sensor connected on S --- bus

etc.), the AUX terminal has 24 Vac out.

Voltage received at actuator is below expected range

Voltage received at actuator is above expected range

Actuator stopped before reaching commanded position

EXPAN DED PARAM ETER NAME

Notes

{{

Page 46

Connections and Applications

W7220 Economizer Module Wiring —

Use Fig. 47 and Tables 10 and 11 to locate the wiring terminals for the Economizer module.

W7220 Controller

NOTE: The bottom 4 Pin actuator header is not used

Left Terminal

Block Label

Fig. 47 -- W7220 Economize r Module Terminal Connection Labels

Table 10 – Economizer Module --

Left Hand Terminal Blocks

Label Type Description

Top Left Terminal Block

MAT MAT

OAT OAT

S --- B U S S --- B U S

I A Q 2 --- 1 0 2 --- 1 0 V d c Air Quality Sensor Input

IAQ COM COM Air Quality Sensor Common

IAQ 24V 24 Vac Air Quality Sensor 24 Vac Source

A C T 2 --- 1 0 2 --- 1 0 V d c Damper Actuator Output (2 --- 10 Vdc)

ACT COM COM Damper Actuator Output Common

ACT 24V 24 Vac Damper Actuator 24 Vac Source

20k NTC and COM

S --- B u s (Sylk Bus)

Bottom Left Termina l Block

Supply Air Temperature Sensor (polarity insensitive connection)

Outdoor Air Temperature Sensor (polarity insensitive connection)

Enthalpy Control Sensor (polarity insensitive connection)

(e.g. CO

sensor)

Right Terminal

Block Label

C14156

Table 11 – Economizer Module --

Right Hand Terminal Blocks

Label Type Description

Top R i g h t Te r min a l B l o ck

N/A n/a The first terminal is not used

A U X 2 --- I 24 Vac IN Input from Thermostat W1 indicating

base unit is in Heat mode, damper controls to High Fan Speed setpoints

OCC 24 Vac IN Occupied / Unoccupied Input

E --- G N D E --- G N D Earth Ground --- System Required

EXH1 24 Vac OUT Exhaust Fan 1 Output

A U X 1 --- O 24 Vac OUT Programmable:

Exhaust fan 2 output

ERV

System Alarm output

Bottom Right Terminal Block

Y 2 --- I 24 Vac IN Y2 in --- Cooling Stage 2 Input from

space thermostat

Y 2 --- O 24 Vac OUT Y2 out --- Cooling Stage 2 Output to

stage 2 mechanical cooling

Y 1 --- I 24 Vac IN Y1 in --- Cooling Stage 2 Input from

space thermostat

Y 1 --- O 24 Vac OUT Y1 out --- Cooling Stage 2 Output to

stage 2 mechanical cooling

C COM 24 Vac Common

R 24 Vac 24 Vac Power (Hot)

Refer to Figs 48 and 49 for sensor and controls connections.

Page 47

SAT

20-K OHM PNO HH79NZ007

(1)

OAT

20-K OHM PNO HH79NZ007

CO2 SENSOR

BRN

ORN

PNK

VIO

GRA

BLK

BLU

BLK

BLU

MAT

OAT

S - BUS

IAQ - 2 - 10

IAQ COM

IAQ 24V+

ACT - 2 - 10

ACT COM

ACT 24V+

W7220

CONTROLLER

AUX2-I

OCC

E- GND

BLUEGRAY

EXH 1

AUX1-O

Y2 - I

Y2 - O

Y1 - I

Y1 - O

WHT

BLK

GRN/YEL

VIO

YEL

ORN

BLU

GRA

BRN

RED

TSTAT W1

OCCUPANCY --- TSTAT G

GROUND

POWER EXHAUST RELA

TSTAT Y3

TSTAT Y1

(2)

OFF STATUS

ECON

24-V COM

24-V POWER

(1)

If no Enthalpy sensor connected

1 2 3 4

ACTUATOR

ENTHALPY

SENSOR

1 2

ECONO

Fig. 48 -- W7220 Sensor and Control I/O Connections

BRN

ORN

PNK

VIO

GRA

BLK

BLU

BLK

BLU

MAT

OAT

S - BUS

IAQ - 2 - 10

IAQ COM

IAQ 24V+

ACT - 2 - 10

ACT COM

ACT 24V+

W7220

CONTROLLER

BLUEGRAY

Fig. 49 -- Actuator/S--BUS

(2)

24V @ Y1-0 means Stage 1 mechanical cooling

AUX2-I

OCC

E- GND

EXH 1

AUX1-O

Y2 - I

Y2 - O

Y1 - I

Y1 - O

WHT

BLK

GRN/YEL

VIO

YEL

ORN

BLU

GRA

BRN

RED

a48--- 9347

a48--- 9348

Economizer Control Configurations

Enthalpy Changeover Control —

Economizer changeover based on outdoor air enthalpy requires an outdoor air enthalpy sensor to replace the OAT sensor. The enthalpy sensor is available as a factory--installed option or as a field--installed accessory (part number HH57AC081). See Fig. 1 for model number nomenclature; check Pos itio n #15 for codes R or S indicating a factory--installed enthalpy sensor. Use Fig. 50

and Table 12 to select the enthalpy changeover setting to enter in menu item SETPOINTS --> ENTH CURVE.

Enthalpy Settings —

When the OA temperature, enthalpy a nd dew point are below the respective setpoints, the Outdoor Air can be used for economizing. Fig. 50 shows the new single enthalpy boundaries in the W7220. There are 5 boundaries (setpoints ES1 through ES5), which are defined by dry bulb temperature, enthalpy and dew point.

Refer to Table 12 for ENTH CURVE setpoint values.

Page 48

The W7220 calculates the enthalpy and dew point using the OA temperature and humidity input from the OA enthalpy sensor. When the OA temperature, OA humidity and OA dew point are all below the selected boundary, the economizer sets the economizing mode to YES, economizing is available.

When all of the OA conditions are above the selected boundary, the conditions are not good to economize and the mode is set to NO.

Fig. 50 shows the 5 current boundaries. There is also a high limit boundary for differential enthalpy. The high limit boundary is ES1 when there are no stages of mechanical cooling energized and HL (high limit) when a compressor stage is energized.

Table 12 provides the values for each boundary limit.

ECONOMIXING

AVAILABLE

NOT AVAILABLE

Enthalpy

Curve

ES1 80.0 60.0 28.0 80.0 36.8 66.3 80.1

ES2 75.0 57.0 26.0 75.0 39.6 63.3 80.0

ES3 70.0 54.0 24.0 70.0 42.3 59.7 81.4

ES4 65.0 51.0 22.0 65.0 44.8 55.7 84.2

ES5 60.0 48.0 20.0 60.0 46.9 51.3 88.5

TEMPERATURE

ENTHALPY

RA TEMP

DUAL ENTHALPY

)

(

ABSOLUTE HUMIDITY

SINGLE ENTHALPY

P2 (T,RH)

ES5 ES4 ES3 ES2 ES1 HL

HIGH LIMIT

P1 (T,RH)

Fig. 50 -- Single Enthalpy Curve and Boundaries

Table 12 – Single Enthalpy and Dual Enthalpy High Limit Curves (EN Units)

Tem p .

D r y --- B u l b ( _F)

Tem p .

Dewpoint (_F)

Enthalpy

(btu/lb/da)

Tem p . ( _F) Humidity %RH Te m p . ( _F) Humidity %RH

HL 86.0 66.0 32.4 86.0 38.9 72.4 80.3

Point P1 Point P2

C12015

Page 49

Demand Controlled Ventilation —

Demand Controlled Ventilation (DCV) function requires a space air CO controller. The CO proportional to the space CO

sensor be connected to the W7220

sensor provides a 2 to 10 vdc signal

level. This sensor is

available as a factory-- installed option (located in the unit’s return air plenum) or as a field--installed accessory. See Fig. 1 for model number nomenclature; check Position #9 for codes E, F, G or H indicating a factory--installed CO

sensor. The W7220 automatically

recognizes the connection of this sensor and self--enables the DCV function after the Configuration period.

VENTMAX

VENTILATION FOR PEOPLE

VENTMIN

INCREASING VENTILATION

VENTILATION FOR SOURCES

should be set to an economizer position that brings in enough fresh air to remove contaminants and CO generated by sources other than people; this airflow rate is designated Va. The VENTMAX should be set to an economizer position that brings in enough fresh air to remove contaminants and CO

generated by all sources

including people at the design condition for maximum space occupancy; this airflow rate is designated Vbz.

DCV With Two--Speed Fan System: Ventilation codes require that the same ventilation rates (Vbz and Va, expressed as CFM) be provided regardless of supply fan speed. When the supply fan speed is reduced, the internal static pressure in the unit’s return plenum also decreases. If the same outside air damper position is retained, the airflow rate through the OA damper decreases below the Va and Vbz levels. To restore ventilation rates to design levels, the damper positions VENTMIN and VENTMAX must be automatically adjusted when the fan speed changes. The W7220 provides this function when it is configured for 2--speed fan operation through a second set of damper position setpoints.

During operation at High fan speed, the damper setpoint limits are designated VENTMIN H and VENTMAX H. Damper operation is same as described under Single--Speed Fan above.

100 700

INSIDE OUTSIDE CO

DIFFERENTIAL

C12167

Fig. 51 -- DCV Single--Speed System Setpoints

DCV With Single--Speed Fan System: During DCV, the

outside air damper modulates between two user configurations depe nding upon the signal level of the space or return air CO

sensor representing the space

occupancy level. The lower of these two positions is referred to as the Minimum IAQ Damper Position (designated VENTMIN) while the higher is referred to as Economizer Minimum Position (designated MINIMUM POSITION or VENTMAX). The VENTMIN position

HIGH SPEED FAN LOW SPEED FAN

VENTMAX H

VENTILATION FOR PEOPLE

VENTMIN H

INCREASING VENTILATION

VENTILATION FOR SOURCES

During operation at Low fan speed, the damper setpoint limits change to VENTMIN L and VENTMAX L. These settings are higher than the comparable High speed settings and ca use the outside air damper to open more to allow the same Va and Vbz airflow rates to be admitted to the space.

Adjust the DCV setpoints VENTMAX H and VENTMAX L with supply fan speed in High speed and Low speed respectively to provide the design load ventilation airflow rate Vbz by measuring outside air temperature, return air temperature and supply air temperature. Make damper position adjustments with at least 10_F temperature difference between the outdoor and return--air temperatures.

VENTMAX L

VENTILATION FOR PEOPLE

INCREASING VENTILATION

VENTMIN L

VENTILATION FOR SOURCES

100 700

INSIDE OUTSIDE CO

Fig. 52 -- DCV 2--Speed System Setpoints — Same Ventilation CFM at Both Speeds

DIFFERENTIAL

100 700

INSIDE OUTSIDE CO

DIFFERENTIAL

C12168

Page 50

To determine the damper setpoint posit ion, perform the following procedure for each condition setpoint, with mechanical cooling OFF:

Calculate the appropriate supply air temperature using the following formula:

TS = (TO x Vbz/CFM) + TR x (CFM – Vbz)/CFM

TS = Supply Air Temperature TO = Outdoor Air Temperature Vbz = Design Maximum Ventilation CFM CFM= Unit Supply Airflow Rate TR = Return Air Temperature

As an example:

Unit Airflow Ra te at High Speed is 4000 CFM Ventilation CFM at design occupancy Vbz is 1200 CFM TO = 60 F TR = 75 F

Required TS = 60 x (1200/4000) + 75 x (4000 – 1200/4000)

=60x0.30+75x0.70=18.0+52.5 = 70.5

At the W7220 keypad, ente r the param eter SETUP --> VENTMAX H and adjust the setpoint value until the observed Supply Air Temperature (MA TEMP) reaches

70.5. Press the

“Enter” key to save this se tpoint to

controller memory.

When determining VENTMIN setpoints, substitute the value for Va in place of Vbz in the formula.

DCV Setpoint: The SETPOINTS parameter DCV SET defines the space CO

level above which the DCV mode

begins to open the outside air damper beyond its VENTMIN ventilation lower limit. This setpoint should be a minimum of 100 ppm greater than the outdoor ambient CO capable of diluting the space CO for outdoor CO to 500 ppm if outdoor CO

level to ensure the outside air will be

level. A typical value

is 400 ppm; adjust the setpoint DCV SET

level is not known. The

factory default value for DCV SET is 1100 ppm.

Economizer Occupancy Control —

The 24--v signal that terminates at the W7220’s OCC input to place the ec onomizer control in Occupied mode when the supply fan starts is routed through the rooftop unit’s Integrated Staging Control Board at its OCCUPANCY jumper. To implement an occupancy control for the economizer operation, connect a contact set at ISC OCCUPANCY quick--connect terminals and cut jumper JMP1. To allow automatic occupancy mode, close the control contacts. To place the economizer in Unoccupied mode, open the control contacts.

OCCUPANCY TERMINALS

Fig. 53 -- Integrated Staging Control (ISC) Board -- Occupancy Terminals and Jumper

CUT JUMPER JMP1 TO IMPLEMENT OCCUPANCY CONTROL

C13674

Page 51

Hardware

T able 14 – SAT/OAT Sensor Characterist ics

Actuators —

The EconoMi$er

X damper act uators are direct--coupled types with spring--ret urn. Power is 24--v from the W7220 outputs. Range of rotation is 95--degrees; timing for full--range movement is 90 seconds to drive open in normal operation, 30 seconds in Test Mode and 25 seconds for spring return.

These actuators are S--bus enabled. The S--bus is a proprietary local equipment network that connects the W7220 controller, one S--enabled actuator and up to three S--type enthalpy sensors on a two--wire communication network. The S--bus is polarity--insensitive. Devices attached to the S--bus are automatically recognized by the controller.

Actuator command position is defined in a 2--10 vdc value. 2.0--v is outside air damper position fully--closed (0% open); 10.0--v is damper position fully -- open (100% open). See Table 13 to correlate control voltage values to outside air damper opening percentage.

Table 13 – Actuator Voltage vs. Damper Position

Vdc %Open Vdc %Open Vdc %Open

2.0 0 4.8 35 7.6 70

2.4 5 5.2 40 8.0 75

2.8 10 5.6 45 8.4 80

3.2 15 6.0 50 8.8 85

3.6 20 6.4 55 9.2 90

4.0 25 6.8 60 9.6 95

4.4 30 7.2 65 10.0 100

These units use a 5--Nm (44 lb--in.) torque model, Honeywell Series MS3105K actuator.

Supply Air Temperature Sensor —

The W7220 controller uses a 20--k ohm analog sensor for Supply Air Temperature (SAT). T he thermistor is attached to a ring terminal. The ring terminal is attached to the unit’s supply fan housing, downstream of the unit’s indoor coil. The SAT sensor is connected to the W7220 input terminals marked MAT. See Table 14 for sensor resistance to temperature correlations.

The W7220 controller requires a valid signal from its SAT channel in order to function. If the SAT c onnection to the W7220 is lost, the W7220 will initiate an alarm condition immediately. No economizing operation will be permitted until this alarm is cleared.

Deg C Ohms Deg F Ohms

--- 3 0 415156 --- 2 0 386130

--- 2 5 301540 0 193070

--- 2 0 221210 20 101820

--- 1 5 163834 32 70200

--- 1 0 122453 40 55420

--- 5 92382 45 47771

0 70200 50 41258

5 53806 55 35725

10 41561 60 31035

15 32341 65 27069

20 25346 70 23719

25 20000 77 20000

30 15886 80 18473

35 12698 100 11544

40 10212 120 6768

45 8261

50 6720

Outside Air Temperature Sensor —

EconoMi$er X systems equipped with outdoor dry bulb temperature changeover control include a 20--k ohm analog sensor to measure Outdoor Air Temperature (OAT). This is the same sensor used for the SAT function; see Table 14 for resistance vs temperature characteristics.

The OAT sensor is attached to the outside air damper frame. It is connected to the W7220’s OAT input terminals.

If an accessory enthalpy sensor is added to an EconoMi$er X system with factory dry bulb changeover, disconnect this OAT sensor wiring at the W7220’s OAT input terminals.

Enthalpy Control Sensor Configuration—

The W7220 economizer control system can accommodate up to three S--bus ent halpy sensors. On EconoMi$er X models with factory--installed Enthalpy Changeover control, one S--bus sensor is provided in the economizer outdoor section. Additional sensors may be added to measure Return Air and Discharge Air conditions.

The Enthalpy Control sensor (Part Number: HH57A C081) communicates with the W7220 Economizer controller on the two--wire local equipment network bus (S--bus) and can either be wired using a two--pin header or using a side connector. This sensor is used for all OAT (Outdoor Air T emper atu re) , RAT (Return Air Temperature) and DAT (Discharge Air Temperature), depending on how its three position DIP switch is set.

Use Fig. 54 and Table 15 to locate the wiring terminals for each Enthalpy Control sensor .

Use Fig. 54 and Table 16 to set the DIP switches for the desired use (location) of the sensor.

Page 52

4-1/4 (108)

2-3/4 (70)

51/64 (21)

2-1/64 (55)

T able 17 – Supply Fan Speed Logic without Economizer

TSTAT

OUTPUT

G/OCC 0 --- V 2 4 --- V 0 --- V 0 --- V

Y1 0 --- V 2 4 --- V 0 --- V 0 --- V

Y2 0 --- V 0 --- V 2 4 --- V 0 --- V

Y3 0 --- V 0 --- V 0 --- V 2 4 --- V

W1 0 --- V 0 --- V 0 --- V 2 4 --- V

W2 0 --- V 0 --- V 0 --- V 2 4 --- V

SUPPLY FAN MOTOR SPEED

OFF LOW MED HIGH

NOTE: Dimensions are in inches. Dimensions in ( ) are in mm.

a50--- 9614

Fig. 54 -- Enthalpy Control Sensor, Dimensions and

DIP Switch Location

T able 15 – Enthalpy Control Sensor

Wiring Terminations*

Ter m i n al

Nbr Label

1 S --- B U S S --- B U S

2 S --- B U S S --- B U S

* Terminals are polarity insensitive.

Type Description

S --- B u s C o m m u n i c a t i o n s (Enthalpy Control Sensor Bus)

T able 16 – Enthalpy Control Sensor DIP Switch Settings

Use

DA OFF ON OFF

RA ON OFF OFF

OA OFF OFF OFF

Legend

DA = Discharge Air RA = Return Air OA = Outside Air

DIP Switch Positions for Switches 1, 2, and 3

1 2 3

When a S--bus sensor is connected to an existing network, it will take 60 minutes for the network to recognize and auto--confi gure itself to use the new sensor. During the 60 minute setup period, no alarms for sensor failures (except SAT) will be issued and no economizing function will be available.

Operating Sequences

Staged Air Volume (3--Speed) Fan Motor —

The Integrated Staging Control (ISC) Board in the main unit determines the operating speed (LOW/MED/HIGH) of the indoor fan based on space ther mostat demand conditions. See Table 17 for this logic.

W7220 Economizer Control —

Tables 18 and 19 provide the W7220 Input/Output Logic. Table 18 describes economizer functions for a unit without a CO

sensor. Table 19 describes economizer

functions for a unit with Demand Controlled Ventilation

sensor connected). The supply fan speed is included

(CO

in these tables for reference; this is neither an input or output of the W7220 controller.

Base Unit Controls —

Base unit includes standard electro--mechanical controls, Staged Air Volume (3--speed supply fan motor with VFD), EconoMi$er

X (with W7220 controller) and thermostat or unitary controller that energizes the G terminal in cooling and heating to control the supply fan operation.

Cooling, Unit With EconoMi$er X Without CO

Sensor —

For Occupied mode operation of the EconoMi$er X control, there must be a 24--v signal at terminal G at the unit’s Integrated Staging Control Board from the thermostat; supply fan motor will start and run in Low Speed. The signal at G is connected to W 7220 input OCC, placing the EconoMi$er X control in Occupied mode; the economizer actuator is commanded open to the MIN POS L ventilation position. Removing the signal at OCC places the EconoMi$er X control in Unoccupied mode; the economizer actuator is driven back to full--closed position.

When free cooling using outside air is not available, the unit cooling sequence will be controlled directly by the space thermostat. Thermostat call for Stage 1 Cooling energizes ISC te rminals G and Y1; supply fan motor starts and runs in Low Speed. The Y1 demand is received at W7220 terminal Y1--I. Outside air damper position will be at MIN POS L. W7220 output Y1-- O is energized; first stage mechanical cooling starts.

As space temperature falls and space cooling load is satisfied, the thermostat will remove its call for first stage cooling; ISC terminal Y1 call is removed. The W7220 input Y1--I is removed; output Y1--O is de--energized, stopping first stage cooling.

When ISC terminal Y1 is de--energized, terminal G may remain energized, indicating Continuous Fan operation.

Page 53

The supply fan motor will continue to run in Low Speed. W7220 input OCC remains energized; the outside air damper remains in MIN POS L. If ISC terminal G is also de--energized with Y1, indicating AUTO Fan operation, then the supply fan motor will stop. The W7220 input at OCC is remove d; the outside air damper closes.

If the space temperature continues to rise, the thermostat will call for second stage cooling; ISC terminal Y2 is also energized. The supply fan motor shifts to MED Speed. Outside air damper position will remain in MIN POS L, second stage cooling starts.

As space temperature falls, the thermostat will remove its call for second stage cooling; ISC terminal Y2 call is removed. The supply fan motor shifts back to Low Speed. The outside air damper will remain at MIN POS L and the ISC board will stop second stage mechanical cooling.

If the space temperature continues to rise, the thermostat will call for third stage cooling; ISC terminal Y--3 is also energized. The supply fan motor shifts to High Speed. The outside air damper position will s hif t to MIN POS H, third stage cooling starts.

As space temperature falls, the thermostat will remove its call for third stage cooling; ISC terminal Y3 call is removed. The supply fan will shift to Medium Speed. The outside air damper is repositioned to MIN POS L and stop third stage mechanical cooling.

When free cooling is available as determined by the appropriate changeover command (outdoor dry bulb,

outdoor enthalpy, differential dry bulb or differential enthalpy), a space thermostat call for Stage 1 Cooling energizes ISC te rminals G and Y1; supply fan motor starts and runs in High Speed. The G demand is received at W7220 input OCC; outside air damper moves to MIN POS L. The Y1 demand is received at W7220 terminal Y1--I. The W7220 economizer control will modulate the outside air damper open and closed to maintain the unit cooling supply air temperature at setpoint MAT SET (default 53_F(12_C)). Compressor will not run.

During free cooli ng operation, a supply air temperature (SAT) above MAT SET will cause the outside air damper to modulate between MIN POS L setpoint and 100% open. As SAT decreases and approaches setpoint MA LO SET (default 45_F(7_C)), the outside air damper will maintain at the MIN POS L setting. With SAT below MA LO SET, the outside air damper will be closed or at minimum (see FREEZE POS) When SAT rises to MA LO SET plus 3_F, the out side air damper will re--open to MIN POS L setting.

Should 100% outside air not be capable of satisfying the space cooling load, space temperature will rise and the thermostat will call for second stage cooling; ISC terminal Y2 is also energized. The supply fan motor remains at High Speed. Outside air damper position will remain at MIN POS L, starting second stage cooling (Compressor 1 operation). Damper will modulate to maintain SAT at MAT SET concurrent with Compressor 1 opera tion.

Table 18 – W7220 Input/Output without CO

INPUTS

DEMAND

CONTROLLED

VENTILATION

NO C O

SENSOR

Fan Speed for reference only; this is not an input or output function of the W7220.

{

See Menu ADV SETUP --- > 2SP FAN DELAY for details.

See Menu ADV SETUP --- > STG# DLY. With Stage 3 delay enabled, control can turn on 2ndstage of cooling Y2 ---O after delay if the call for Y2 ---I has not been satisfied.

OUTSIDE AIR

Good to

economize?

Yes

Y 1 --- I Y 2 --- I

Off Off Low 0 --- v / O f f 0 --- v / O f f MIN POS L Closed

On Off Low 2 4 --- v / O n 0 --- v / O f f MIN POS L Closed

On On High 2 4 --- v / O n 2 4 --- v / O n MIN POS H Closed

Off Off Low 0 --- v / O f f 0 --- v / O f f MIN POS L Closed

On Off Low 0 --- v / O f f 0 --- v / O f f

On On High

Ref:

FAN SPD*

Mechanical Cooling Stage

Y 1 --- O / 1 S T Y 2 --- O / 2 N D Outside Air Damper Position

2SP DELAY{;

24v/On

Sensor

0 --- v / O f f * *

OUTPUTS

MIN POS L to

MIN POS H to

Occupancy

OCC Yes OCC No

Modulating:

F u l l --- O p e n

Modulating:

F u l l --- O p e n

Modulating:

Closed to

F u l l --- O p e n

Modulating:

Closed to

F u l l --- O p e n

Page 54

Table 19 – W7220 Input/Output with Demand Controlled Ventilation (DCV)

INPUTS

DEMAND

CONTROLLED

VENTILATION

Below set

Above set

Fan Speed for reference only; this is not an input or output function of the W7220.

{

See Menu ADV SETUP --- > 2SP FAN DELAY for details.

See Menu ADV SETUP --- > STG# DLY. With Stage 3 delay enabled, control can turn on 2ndstage of cooling Y2 ---O after delay if the call for Y2 ---I has not been satisfied.

OUTSIDE AIR

Good to

economize?

Yes

Y 1 --- I Y 2 --- I

Off Off Low 0 --- v / O f f 0 --- v / O f f VENTMIN L Closed

On Off Low 2 4 --- v / O n 0 --- v / O f f VENTMIN L Closed

On On High 2 4 --- v / O n 2 4 --- v / O n VENTMIN H Closed

Off Off Low 0 --- v / O f f 0 --- v / O f f VENTMIN L Closed

On Off Low 0 --- v / O f f 0 --- v / O f f

On On High

Off Off Low 0 --- v / O f f 0 --- v / O f f

On Off Low 2 4 --- v / O n 0 --- v / O f f

On On High 2 4 --- v / O n 2 4 --- v / O n

Off Off Low 0 --- v / O f f 0 --- v / O f f

On Off Low 0 --- v / O f f 0 --- v / O f f

On On High

Ref:

FAN SPD*

Mechanical Cooling Stage

Y 1 --- O / 1 S T Y 2 --- O / 2 N D Outside Air Damper Position

2SP DELAY{;

24v/On

2SP DELAY{;

24v/On

0 --- v / O f f * *

OUTPUTS

VENTMIN L to

VENTMIN H to

VENTMIN L to

VENTMIN H to

VENTMIN L to

VENTMIN H to

Occupancy

OCC Yes OCC No

Modulating:

F u l l --- O p e n

Modulating:

F u l l --- O p e n

Modulating:

VENTMAX L

Modulating:

VENTMAX L

Modulating:

VENTMAX H

Modulating:

VENTMAX L

Modulating:

F u l l --- O p e n

Modulating:

F u l l --- O p e n

Modulating:

Closed to

F u l l --- O p e n

Modulating:

Closed to

F u l l --- O p e n

Modulating:

Closed to

F u l l --- O p e n

Modulating:

Closed to

F u l l --- O p e n

Closed

As space temperature falls, the thermostat will remove its call for second stage cooling; ISC terminal Y2 call is removed. The supply fan motor remains High Speed. The outside air damper limit is repositioned to between MIN POS L a nd 100% open. Second stage cooling (Compressor 1 operation) stops. As space temperature continues to fall and space cooling load is satisfied, the thermostat will remove its call for first stage cooling; ISC terminal Y1 call is removed. The W7220 input Y1--I is removed; free cooling mode ends. Outside air damper will remain at MIN POS L if supply fan remains in operation (CONT FAN) or to closed if supply fan stops (AUTO FAN).

Should 100% outside air and second stage cooling (Compressor 1 operation) not be capable of satisfying the space cooling load, space temperature will rise and the thermostat will call for third stage cooling: ISC terminal Y3 is also energized, starting third stage cooling (Compressor 2 operation). The supply fan motor will remain at High Speed. The Y3 demand is received at W7220 input Y2--I. The outdoor air damper position will modulate from MIN POS H t o 100% Open to maintain SAT at MAT SET concurrent with Compressor 2 operation.

As space temperature falls, the thermostat will remove its call for third stage cooling; ISC terminal Y3 call is removed. The supply fan will remain at High Speed. The W7220 input Y2--I is also removed; the outside air damper is repositioned to modulate from MIN POS L to 100% Open, third stage cooling (Compressor 2 operation) stops.

Power Exhaust: If accessory power exhaust is installed, the power exhaust fan motors will be energized by the economizer control as the dampers open above the setpoint EXH1 SET L during Low Speed operation or EXH1 SET H during High Speed fan operation. The EXH1 output will be de--energized as the dampers close below the EXH1 setpoint value.

Damper movement from full closed to full open (or vice

X—

/2minutes.

versa) will take approximately 1--

Heating With EconoMi$er

When the space temperature calls for heat (W1 closes), ISC terminal W1 is energized. The supply fan will start and run in High Speed. The W1 signal will connect to W7220 input AUX2I; the outside air damper will move to MIN POS H. Unit heating sequence will follow base unit control sequences.

Page 55

Demand Controlled Ventilation —

If a space or return air CO EconoMi$er

X control, a Demand Controlled Ventilation

sensor is connected to the

strategy will operate automatically.

When the space CO2level is below setpoint DCV SET (default 1100 ppm), the minimum ventilation position for the outside air damper will be rese t to lower settings suited for offsetting CO

loads from space sources not

including people. The settings will vary according to supply fan speed. When the supply fan speed is Low, the DCV minimum ventilation point is VENTMIN L. When the supply fan speed is High, the DCV minimum ventilation point is VENTMAX H.

As the CO

level in the space increases above the setpoint

DCV SET (default 1100 ppm), the DCV ventilation position of the outside air damper will be increased proportionally, until the Maximum Ventilation setting is reached. The settings will vary according to supply fan speed. When the supply fan speed is Low, the DCV maximum ventilation point is VENTMAX L. When the supply fan speed is High, the DCV maximum ventilation point is VENT MAX H.

DCV operation will float between its VENTMIN and VENTMAX settings, never exceeding the VENTMAX limit as the space CO

level varies according to changes

in people occupancy levels.

During concurrent demand for DCV and free cooling, t he outdoor--damper will follow the higher demand condition from the DCV mode or from the free--cooling mode.

Setup and configuration involves stepping through three menus and enabling re quired functions and re--se lecting setpoints to meet project requirements. The menus used are SYSTEM SETUP, ADV SETUP and SETPOINTS.

Obtain a copy of t he project control specifications before starting setup and configuration process.

NOTE: W7220 will be in the “set up” mode for the first 60 minutes after powered. If a sensor for OA air or S--bus device (sensor, actuator) is disconnected during the set up mode, the W7220 will not alarm that failure. The SAT sensor is a system “critical” sensor, if the SAT sensor is removed during the set up mode, the W7220 will alarm. After 60 minutes the W7220 controller will c hange to operation mode and all components removed or failed will alarm in the operation mode.

For this application with the 2--spee d supply fan option, note that parameters EQUIPMENT, AUX2I and FAN TYPE have required settings. Check that these parameters are set at these required settings:

EQUIPMENT must be CONV AUX2I must be W FAN SPEED must be 2SPEED

Press the

(EXIT) button to exit the SYSTEM SETUP menu and return to top level menu. Scroll down to ADV SETUP menu and press

(ENTER) button to enter this menu. Scroll down through the list of parameters and adjust settings as required. Be sure that the message CHANGE STORED appears with every change in parameter setting.

Setup and Configuration

Before being placed into service, the W7220 Economizer module must be setup and configured for the installed system according to project control specifications.

Inspect all wiring connections at the Economizer module’s terminals, and verify compliance with the installation wiring diagrams.

Initial Menu Display —

On initial start up, Honeywell displays on the first line and Economizer W7220 on the second line. After a brief pause, the revision of the software appears on the first line and the second line will be blank.

Time--out and Screensaver —

When no buttons have been pressed for 10 minutes, the LCD displays a screen saver, which cycles through the Status items. Each Status items displays in turn and cycles to the next item after 5 seconds.

IMPORTANT: During setup, the Economizer module is live at all times.

Press the

(EXIT) button to exit the ADV SETUP menu and return to top level menu. Scroll down to SETPOINTS menu and press

(ENTER) button to enter this menu. Scroll down through the list of parameters and adjust settings as required. Be sure that the message CHANGE STORED appears with every change in parameter setting.

SETPOINT Defaults: The default setpoint values represent many years of successful experience with economizing systems. Any changes that represent significant deviations from the default values should be well considered.

DCV SETPOINT: The default value for DCV SET is 1100 ppm. It is recommended tha t this setpoint be adjusted down to 500 ppm (or CO

level of outdoor air

plus 100 ppm, whichever is higher) to permit an earlier initiation of the DCV mode as space occupancy increases.

Checkout

For checkout, review the Status of each configured parameter by observing the scrolling display from the Screensaver mode or by entering the STATUS menu.

Use the Checkout menu (see Table 9 on page 45) to test the damper operation and any configured outputs. Only items that are configured are shown in the Checkout menu.

Page 56

To perform a Checkout test:

1. Scroll to the desired test in the Checkout menu using the the

2. Press the

3. RUN? appears.

4. Press the

5. The unit pauses and then displays IN PROGRESS.

6. When the test is complete, DONE appears.

7. When all desired parameters have been tested, press the

The Checkout tests can all be performed at the time of installation or at any time during the operation of the system as a test that the system is operable.

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage.

Be sure to allow enough time for compressor startup and shutdown between checkout tests so that you do not short--cycle the compressors.

Status —

Use the STATUS menu (see pages 42 and 43) to check the parameter values for the various devices and sensors configured.

Calibration of Sensors —

There are up to six sensor calibration settings available in the ADV SETUP menu (depe nding on which sensors are connected to the W7220). See page 44 for this menu.

Resetting All Defaults —

Menu SYSTEM SETUP contains parameter FACTORY DEFAULT. This parameter will reset all setpoints back to factory default values.

To reset all values to defaults, scroll to the SYSTEM SETUP menu, enter the menu and scroll to parameter FACTORY DEFAULT. Enter this parameter and change the display value from NO to YES. Press ENTER

After resetting all values, scroll up in SYSTEM SETUP to ensure the three parameters requiring special val ues for use with 2--speed fan system are correct.

and buttons.

button to select the item.

button to start the test.

(Menu up) button to end the test.

CAUTION

Troubleshooting

Power Up Delay—

Upon power up (or after a power outage or brownout) the W7220 controller module begins a 5--m inute power up delay before enabling mec hanical cooling.

Power Loss (Outage or Brownout) —

All setpoints and advanced settings are restore d after any power loss or interruption.

NOTE: If the power goes below 18 Vac, the W7220 controller module assumes a power loss and the 5--minute power up delay will become functional when power returns above 18 Vac.

Alarms —

The Economizer module provides alarm me ssages that display on the 2--line LCD.

NOTE: Upon power up, the module waits 60 minutes before checking for alarms. This allows time for all the configured devices (e.g. sensors, actuator) to become operational. The exception is the SAT sensor which will alarm immediately.

If one or more alarms are present and there has been no keypad activity for at least 5 minutes, the Alarms menu displays and cycles through the active alarms. You can also navigate to the Alarms menu at any time. The list of alarms included in Table 9 (see page 45) is not a complete list of available alarm messages. Each sensor has alarms for temperature, humidity and enthalpy. The list of possible alarms will vary from unit to unit as different sensors are connected.

Clearing Alarms —

Once the alarm has been identified and the cause has been removed (e.g. replaced faulty sensor) the alarm can be cleared from the display.

To clear an alarm, perform the following:

1. Navigate to the desired alarm.

2. Press the

3. ERASE? displays.

4. Press the

5. ALARM ERASED displays.

6. Press the action and return to the previous menu.

NOTE: If the alarm still exists after you clear it, it is redisplayed within 5 seconds.

button.

(Menu up/Exit) button to complete the

Page 57

Table 20 – Operating Issues and Concerns

Issue or Concern Possible Cause and Remedy

My outdoor temperature reading on the STATUS menu is not accurate.

If my enthalpy sensor drifts in accuracy over time, can I re --- calibrate it?

Can I go back to factory defaults and start over?

WillIbeabletoseetheLCDscreen when it is in the unit?

What is a good setpoint for the Supply Air Temperature (SAT)?

I am using enthalpy sensors. Why did the control ask me to input a dry bulb changeover temperature?

In checkout, the outdoor damper closes when I command it to open.

How do I set my minimum position? The minimum position is set using the VENTMIN and VENTMAX setup in the SETPOINTS menu.

What if my damper does not go completely closed in the checkout operation?

How do I set the OCC? There are two settings for the OCC setting, INPUT and ALWAYS. INPUT is from the space

Doestheeconomizersavemy program values if the unit loses power?

If the unit is left in checkout, how long will the unit stay in checkout mode without input?

Check the sensor wiring:

•EnthalpysensorsaretobewiredtotheS---Busterminals.

• Temperature sensors are to be wired to the OAT and MAT terminals.

The sensor are not able to be re --- calibrated in the field. However there is a menu item under the ADVANCED menu where you are able to input a limited offset in temperature and humidity for each sensor you have connected to the economizer.

Under the SYSTEM SETUP menu y ou can change the setpoints to the factory defaults.

The LCD screen has a backlight that is always illuminated.

The supply air temperature is the temperature of air that you want to supply to the space. In a commercial building, this is between 50 to 55_F (10 to 13_C). The supply air is the mixing of the return air and the outdoor air.

In the event the humidity sensor in the enthalpy sensors fails, the backup algorithm in the control is to default to the temperature sensor in the enthalpy sensor.

Check the actuator linkage or rotation. In the CHECKOUT mode, the outdoor damper should drive open or closed with the return air damper having the opposite effect.

VENTMIN is the minimum ventilation required when using an occupancy sensor and VENTMAX is the minimum ventilation when not using an occupancy sensor for Demand Controlled Ventilation. The VENTMAX position is set the same as with the potentiometer on the analog economizers and is the output voltage to the damper actuator. The range is 2 Vdc closed OA damper and 10 Vdc open OA damper.

Check the damper linkage or hub to make sure the damper is able to close completely.

thermostat, if it has an occupancy output. ALWAYS is the unit in the occupied mode, if the economizer is powered (fan on).

Yes, once the changes are stored in the controller they will be stored until they are changed by the operator.

The unit will remain in checkout for 10 minutes, then return to normal operation.

Page 58

Fig. 55 -- Typical Ec onoMi$erRX Wiring Diagram

a48--- 9340

Page 59

Menu Tables:

1. SYSTEM SETUP

2. ADVANCED SETUP

3. SETPOINTS

Menu 1: System Setup

CONTROL SET POINT AND CONFIGURATION LOG

Project Name/Location:

Model Number:

Serial Number:

Date:

Technician

Parameter

INSTALL 01/01/10 Display order = MM/DD/YY

UNITS DEG _F _F or _C Sets economizer controller in degrees Fahrenheit or Celsius.

EQUIPMENT CONV CONV required for

AUX2 I W Wrequiredfor

FAN TYPE 2speed 2speed required Sets the economizer controller for operation of 1 speed or 2 speed

FAN CFM 5000cfm 100 to 15000 cfm; UNIT DESIGN AIRFLOW (CFM)

AUX OUT NONE NONE

OCC INPUT INPUT or ALWAYS OCCUPIED MODE BY EXTERNAL SIGNAL

FACTORY DEFAULT NO NO or YES Resets all set points to factory defaults when set to YES. LCD will

Project

Value

Parameter

Default

Value

Parameter

Range and Increment

2 --- s p e e d m o d e

ERV EXH2 SYS

Notes

Setting order = DD, MM, then YY

CONV = conventional; HP O/B = Enable Heat Pump mode; not available with 2 - -- speed SeeMenuNote4(onpage45)

W = Informs controller that system is in heating mode. SD = Enables configuration of shutdown (not available on 2-- -speed) SeeMenuNote4(onpage45)

indoor fan system. SeeMenuNote4(onpage45)

Enter ONLY if using DCVCAL ENA = AUTO The value is found in the Project Submittal documents for the specific RTU.

Select OUTPUT for AUX1 O relay NONE = not configured (output is not used) ERV = Energy Recovery Ventilator EXH2 = second damper position relay closure for second exhaust fan SYS = use output as an alarm signal

When using a setback thermostat with occupancy out (24 Vac), the 24- -- Vac is input to the OCC terminal. RTU control circuit provides 24---Vac to OCC through OCCUPIED terminals on Integrated Staging Control Board.

briefly flash YES and change to NO but all parameter s will change to the factory default values.

RECHECK AUX2 I and FANTYPE for required 2---speed values.

Page 60

Menu 2: Advanced Setup

Parameter

MA LO SET 45_F(7_C) 35 to 55_F;

FREEZE POS CLO CLO or MIN FREEZE PROTECTION DAMPER POSITION

CO2 ZERO 0ppm 0 to 500 ppm:

CO2 SPAN 2000ppm 1000 to 3000 ppm;

STG3 DLY 2.0h 0 min, 5 min, 15 min,

SD DMPR POS CLO CLO or OPN Function NOT AVAILABLE with 2-- -speed mode

DCVCAL ENA MAN MAN (manual) Turns on the DCV automatic control of the dampers. Resets ventilatio n MATTCAL 0.0 1.0_F

OA T CAL 2.0 3.0_F

OA H CAL 0% RH + / --- 1 0 % R H OUTSIDE AIR HUMIDITY CALIBRATION

RA T CAL 4.0 5.0_F

RA H CAL 0% RH + / --- 1 0 % R H RETURN AIR HUMIDITY CALIBRATION

DA T CAL 0.0 1.0_F

2SP FAN DELAY 5 Minutes 0to20minutesin

Project

Value

Parameter

Default

Value

(or _C)

Parameter

Range and Increment

(2 to 13_C) incremented by 1_

Increment by 10

Increment by 50

then 15 min intervals. Up to 4 h or OFF

+/ --- 2 . 5 _F ( + / --- 1 . 4 _C)

1 minute increments

Notes

SUPPLY AIR TEMPERATURE LOW LIMIT Temperature to achieve Freeze Protection (close damper and alarm if temperature at SAT location falls below setup value)

Damper position when freeze protection is active CLO =closed MIN = MIN POS or VENTMAX

CO2ppm level to match CO2Sensor start level.

CO2ppm span to match CO2sensor.

COOLING STAGE 3 DELAY Delay after stage 2 for cool has been active. Turns on 2nd stage of cooling when economizer is 1st stage and mechanical cooling is 2nd

SUPPLY AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration supply air temperature (SAT) sensor

OUTSIDE AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration outside air temperature (OAT) sensor

Allows for the operator to adjust for an out of calibration of outside air enthalpy sensor

RETURN AIR TEMPERATU RE CALIBRATION Allows for the operator to adjust for an out of calibration return air temperature (RA) sensor

Allows for the operator to adjust for an out of calibration return air enthalpy sensor

DISCHARGEAIRTEMPERATURECALIBRATION Allows for the operator to adjust for an out of calibration discharge air temperature (DAT) sensor

TIME DELAY ON 2ND STAGE ECONOMIZING While in the Economizing mode, this is the delay between thermostat Y2 call and Y1 - -- O output to mechanical cooling stage, to allow high speed fan operation to attempt to cool space first.

Page 61

Menu 3: Setpoints

Parameter

Project

Value

MAT SET 53_F

Parameter

Default

Value

(12_C)

Parameter

Range and Increment

38 to 65_F; (3 to 18_C) increment by 1_

Notes

SUPPLY AIR SETPOINT Setpoint determines where the economizer will modulate the OA damper to maintain the supply air temperature. SeeMenuNote2(onpage45).

LOW T LOCK 32_F

(0_C)

DRYBLB SET 63_F

(17_C)

--- 45 to 80_F (--- 43 to 27_C) increment by 1_

48 to 80_F; (9 to 27_C) increment by 1_

COMPRESSOR LOW TEMPERATURE LOCKOUT Setpoint determines outdoor temperature when the mechanical cooling cannot be turned on.

OA DRY BULB TEMPERATURE CHANGEOV E R SETPOIN T Setpoint determines where the economizer will assume outdoor air temperature is good for free cooling; e.g.: at 63_F(17_C), unit will economize at 62_F (16.7_C) and below and not economize at 64_F (17.8_C) and above. There is a 2_F(1.1_C) deadband. SeeMenuNote3(onpage45).

ENTH CURVE ES3 ES1, ES2, ES3, ES4,

or ES5

ENTHALPY CHANGEOVER CURVE (Requires enthalpy sensor option) Enthalpy boundary “curves” for economizi ng using single enthalpy.

DCV SET 1100ppm 500 to 2000 ppm;

increment by 100

DEMAND CONTROLLED VENTILATION SETPOINT Displays only if CO Controlled Ventilation of space. Above the setpoint, the OA dampers

sensor is connected. Setpoint for Demand

will modulate open to bring in additional OA to maintain a space ppm level below the setpoint.

MIN POS L 6.0 V 2 to 10Vdc VENTILATION MINIMUM POSITION AT LOW SPEED

Displays ONLY if a CO

sensor is NOT connected.

MIN POS H 4.4 V 2 to 10Vdc VENTILATION MINIMUM POSITION AT HIGH SPEED

Displays ONLY if a CO

sensor is NOT connected.

VENTMAX L 6.0 V 2 to 10Vdc DCV MAXIMUM DAMPER POSITION AT LOW SPEED

(Requires CO

sensor connected)

VENTMAX H 4.4 V 2 to 10Vdc DCV MAXIMUM DAMPER POSITION AT HIGH SPEED

(Requires CO

sensor connected)

VENTMIN L 3.7 V 2 to 10Vdc DCV MINIMUM DAMPER POSITION AT LOW SPEED

(Requires CO

sensor connected)

VENTMIN H 2.8 V 2 to 10Vdc DCV MINIMUM DAMPER POSITION AT HIGH SPEED

ERV OAT SP 32_F

(0_C)

0to50_F; (--- 18 to 10_C) increment by 1_

EXH1 L SET 65% 0 to 100%;

increment by 1

(Requires CO

ENERGY RECOVERY VENTILATION UNIT OUTDOOR AIR TEMPERATURE SETPOINT Only when AUX1 O = ERV

EXHAUST FAN STAGE 1 SETPOINT AT LOW SPEED Setpoint for OA damper position when exhaust fan1 is powered by the

sensor connected)

economizer.

EXH1 H SET 50% 0 to 100%;

increment by 1

EXHAUST FAN STAGE 1 SETPOINT AT HIGH SPEED Setpoint for OA damper position when exhaust fan1 is powered by the economizer.

EXH2 L SET 80% 0 to 100%;

increment by 1

EXHAUST FAN STAGE 2 SETPOINT AT LOW SPEED SetpointforOAdamperpositionwhenexhaustfan2ispoweredby the economizer . Only used when AUX1--- O is set to EHX2.

EXH2 H SET 75% 0 to 100%;

increment by 1

EXHAUST FAN STAGE 2 SETPOINT AT HIGH SPEED SetpointforOAdamperpositionwhenexhaustfan2ispoweredby the economizer . Only used when AUX1--- O is set to EHX2.

Page 62

Staged Air Volume (SAVt) with Variable Frequency Drive

The Staged Air Volume (SAV) system utilizes a Variable Frequency Drive (VFD) to automatically adjust the indoor fan motor speed in sequence with the unit’s ventilation, cooling and heating operation. Per ASHRAE 90.1--2016 standard during the fi rst stage of cooling operation the SAV system will adjust the fan motor to provide 66% of the design airflow rate for the unit. When the call for the second stage of cooling is required, the SAV system will allow the design airflow rate for the unit establ ished (100%). During the heating mode, the SAV system will allow total design airflow rate (100%) operation. During ventilation mode, the SAV system will operate the fan motor at 66% speed.

230V/460V

Fig. 56 -- Variable Frequency Drive (VFD)

575V ONLY

C13209

Fig. 57 -- VFD Location

C13110

Page 63

Multi--Speed VFD Display Kit (Field--Installed Accessory)

NOTE: The Remote VFD Keypad is part of the

Multi--Speed VFD display kit (PN: CRDISKIT002A00) which is a field--installed accessory. It is not included with the 48LC 14--26 base units.

The VFD keypad as shown in Fig. 58 consists of the following sections:

ALPHA

NUMERIC

DISPLAY

MENU KEY

NAVIGATION

KEYS

AND

STATUS

LEDs

1-20 Motor Power [2] 0.12KW-0.16HP

Setup 1

Status

Com.

Warn.

Alarm

Hand

O

Reset

Quick Menu

Main Menu

Auto

Navigation Keys and Status LEDs: The Navigation keys and Status LEDs are detailed in the following table.

Com.

Warn.

Alarm

C13114

1 Com. LED: Flashes when bus communications is

communicating.

2 Green LED/On: Control selection is working.

3 Yellow LED/Warn.: Indicates a warning.

4 Flashing Red LED/Alarm: Indicates an alarm.

5 Arrows YB: Use the Up and Down arrow keys

to navigate between parameter groups, parameters and within parameters. Also used for setting local reference.

6 Back key: Press to move to the previous step or

layer in the navigation structure.

7 OK key: Press to select the currently displayed

parameter and for accepting changes to parameter settings.

OPERATION KEYS & LEDs

C13112

Fig. 58 -- VFD Keypad

Alpha Numeric Display: The LCD dis p lay is back lit with

2 alpha--numeric lines. All data is displayed on the LCD.

1 2 3

1-20 Motor Power [2] 0.12KW-0.16HP

Setup 1

C13113

1 Parameter number and name.

2 Parameter value.

3 Setup number shows the active setup and the edit

setup. If the same set--up acts as both the active and edit set--up, only that setup number is shown (factory setting). When the active and edit setup differ, both numbers are shown in the display (SETUP 12). The flashing number indicates the edit setup.

4 The symbol in the number 4 position in the figure

above indicates motor direction. The arrow point either clockwise or count er--clockwise to show the motor’s current direction.

5 The position of the triangle indicates the currently

selected menu: Status, Quick Menu or Main Menu.

Menu Key: Use the Menu key to select between Status, Quick Menu or Main Menu. The triangle icon at the bottom of the LCD display indicates the currently selected mode. (See number 5 in the table above.)

Operation Keys and LEDs: The follow ing table details the functions of the Operating keys. An illuminated yellow LED above the key indicates the active key.

Hand

1 2 3

O

Reset

Auto

C13115

1 Hand On key: Starts the motor and enables

control of the variable frequency drive (VFD) via the VFD Keypad option.

NOTE: Please note that terminal 27 Digital Input (5--12 Terminal 27 Digital Input) has coast inverse as default setting. This means that the Hand On key will not start the motor if there is no 24V to terminal 27, so be sure to connect terminal 12 to terminal 27.

2 Off/Reset key: Stops the motor (off). If in alarm

mode the alarm will be reset.

3 Auto On key: The variable frequency drive is

controlled e ither via control terminals or serial communication.

Connecting the Keypad to the VFD

The VFD keypad can be mounted directly to the variable frequency drive, provided you can easily access the front panel of the VFD. If you do not have easy access to the VFD front panel, use the cable included with the kit to connect the keypad to the VFD.

Page 64

Connecting the Keypad Directly to the VFD —

1. Place the bottom of the VFD keypad into the variable frequency drive as shown in Fig. 59.

C13116

Fig. 59 -- Align Bottom of VFD Keypad with Opening

in VFD Front Panel

Male Connector connect to VFD Front Panel

2. Push the top of the VFD keypad into the variable frequency drive as shown in Fig. 60.

C13117

Fig. 60 -- Secure Keypad in Place

Using the Cable to Connect the Keypad to the VFD —

Female Connector connect to back of VFD Remote Keypad

C13118

Fig. 61 -- VFD Remote Keypad Cable

1. Connect the male end of the cable to the front panel of the variable frequency drive. Use 2 of the screws included with the kit to secure the cable to the VFD.

2. Connect the female end of the cable to the back panel of the VFD Remote keypad. Secure the cable to the remote keypad using the 2 remaining screws from the kit.

Program the VFD for 3 Discrete Indoor Fan Speeds

IMPORTANT: 48LC 14--26 units are programmed at

the factory for 3 discrete indoor fan speeds. The following procedure is only to be used to recover this function after an event such as a system crash.

NOTE: This procedure requires use of the VFD Keypad which is included as part of the field--installed Multi--Speed VFD display kit (PN: CRDISKIT002A00). If the VFD keypad is not already installed, install it. See “Connecting the Keypad to the VFD” for details.

The VFD keypad can be connected to the variable frequency drive via the cable included with the Multi--Speed VFD display kit (PN: CRDISKIT002A00).

To program the VFD for 3 discreet indoor fan motor speeds:

1. At Power--Up: At the first power up the LCD displays the Select

Language screen. The defa ult setting is English. To

Page 65

change the language, press the OK key and use the Y and B keys to scroll to the desired language and then press OK.

Select language English [0] English

SETUP 1

Com.

Warn.

Alarm

Hand

Status

O

Reset

Quick Menu

Main Menu

Auto

C13119

Fig. 62 -- Keypad with Power Up Screen Displayed

2. Selecting Regional Settings:

a. Press the Off Reset key.

b. Press the Menu key to move the B(triangle

icon) so i t is positioned over Main Menu. The display show the following --

0 --- * * O p e r a t i o n / D i s p l a y

1---** Load and Motor

c. Press the OK key, the display changes to --

0 --- 0 * B a s i c S e t t i n g s

0 --- 1 * S e t --- u p O p e r a t i o n s

NOTE:PresstheBack key to return to the previous display

d. With the top row highlighted, press OK.The

display changes to --

0---01 Language

[0] English

e. Press B(Down Arrow key) once; the display

changes to --

0 --- 0 3 R e g i o n a l Se t t i n g s

[0] International

3. Clearing Alarm 060: External Interlock:

a. Press the Menu key twice to position the B(tri-

angle icon) over Main Menu; the display changes to --

0 --- * * O p e r a t i o n / D i s p l a y

1---** Load and Motor

b. Press the B(Down Arrow) key until the follow-

ing display appears --

4---** Limits / Warnings

5 --- * * D i g i t a l I n / O u t

c. Press OK. The display changes to --

5 --- 0 * D i g i t a l I / O m o d e

5--- 1* Digital Inputs

d. Press B(Down Arrow) once to highlight the bot-

tom row and press OK. The display changes to --

5--- 10 T erminal 18 Digital In…

[8] Start

e. Press B(Down Arrow) twice; the following

display appears--

5--- 12 T erminal 27 Digital In…

[7] External Interlock

f. Press OK to highlight the number in the bracket.

g. Press B(Down Arrow) until the following display

appears --

5--- 12 T erminal 27 Digital In…

[0] No operation

h. Press OK.

i. Pres s Off Reset. The Alarm indicator disappears.

4. Entering Grid Type:

a. Press the Menu key to move the B(triangle

icon) so i t is positioned over Main Menu. The display show the following --

0 --- 0 * B a s i c S e t t i n g s

0 --- 1 * S e t --- u p O p e r a t i o n s

b. Press OK twice: the display changes to --

0---01 Language

[0] English

f. Press OK; t he [0] is now highlighted.

g. Press B(Down Arrow) key onc e; the display

changes to --

0 --- 0 3 R e g i o n a l Se t t i n g s

[1] North America

h. Press OK

NOTE: If the Alarm 060 appears, follow Step 3 to clear

thealarm.MakesuretopressOff Reset when done. If there is no alarm, continue at Step 4.

c. Press B(Down Arrow) three times, to reach the

following display --

0 --- 0 6 G r i d T y p e

[102] 200--- 240V/60Hz

d. Press OK to highlight the number in the bracket

andthenusetheY and B (Up and Down Arrow) keys to select the desired voltage and Hertz for the unit.

e. Press OK to accept the selection and continue.

Page 66

5. Entering Motor Data:

a. Press the Menu key to move the B(triangle

icon) so i t is positioned over Main Menu. The display show the following --

0 --- * * O p e r a t i o n / D i s p l a y

1---** Load and Motor

b. Press B(Down Arrow) once to highlight the

bottom row.

c. Press OK, the display changes to --

1---0* General Settings

1--- 1* Motor Selection

d. Press B(Down Arrow) twice to reach the

following display --

1--- 1* Motor Selection

1 --- 2 * M o t o r D a t a

e. Press OK, the following display appears --

1-20 Motor Power

[ 9 ] 1. 5 k W --- 2 h p

m. Press B(Down Arrow) once to display the

following --

1-25 Motor Nominal Speed

1740rpm

n. Press OK to highlight the rpm value and then

use the Y and B (Up and Down Arrow)keys to select the nameplate rpm. Press OK again to set the selected rpm.

6. Entering Parameters for 1--71, 1--73, 1--82, and 1--90:

a. Press the Menu key to move the B(triangle

icon) so i t is positioned over Main Menu. The display show the following --

0 --- * * O p e r a t i o n / D i s p l a y

1---** Load and Motor

b. Press B(Down Arrow) once to highlight the

bottom row.

c. Press OK, the display changes to --

1---0* General Settings

1--- 1* Motor Selection

NOTE: The number in the bracket may be different from what is shown above.

f. Press OK andthenusetheY and B (Up and

Down Arrow) keys to scroll to the proper motor horsepower. Press OK again to set the selected hp.

g. Press B(Down Arrow) once, the following dis-

play appears --

1-22 Motor Voltage

230V

h. Press OK to highlight the voltage value. Use the

Y and B (Up and Down Arrow) keys to select the nameplate voltage. Press OK again to set the selected voltage.

i. Press B(Down Arrow) once to display the

following --

1-23 Motor Frequency

60Hz

j. Press OK to highlight the Frequency value and

then use the Y and B (Up and Down Arrow) keys to select the nameplate Hz. Press OK again to set the selected Hz.

k. Press B(Down Arrow) once to display the

following --

1-24 Motor Current

6.61A

l. Press OK to highlight the Current value and

then use the Y and B (Up and Down Arrow) keys to select the Max Amps value provided. Press OK again to set the selected Max Amps.

NOTE: The Max Amps is greater than the nameplate value. Check the VFD Unit Parameters (see Tables 21 -- 25 on pages 70 -- 74) and use the value listed fo r the given unit in the column labeled “Motor Current Must--Hold Amps”.

d. Press B(Down Arrow) until the following display

appears --

1---6* Load Depen. Setting

1--- 7* Start Adjustments

e. Press OK, the following display appears --

1-71 Start Delay

2.0s

f. Press OK to highlight the number and t hen use

the Y and B (Up and Down Arrow)keysto select the number provided in Tables 21 -- 25. Press OK again to set the selected value.

g. Press B(Down Arrow) twice, the following

display appears --

1-73 Flying Start

[1] Enabled

h. Press OK to highlight the number in the bracket

andthenusetheY and B (Up and Down Ar- row) keys to select the number provided in Tables 21 -- 25. Press OK again to set the selected value.

i. Press the Back key once, the following di splay

appears --

1---6* Load Depen. Setting

1--- 7* Start Adjustments

j. Press B(Down Arrow) once, the following

display appears --

1--- 7* Start Adjustments

1 --- 8 * S t o p Ad j u s t m e n t s

k. Press OK, the following display appears --

1-80 Function at Stop

[0] Coast

Page 67

l. Press B(Down Arrow) once, the following

display appears --

1-82 Min Speed for Functio…

1.0 Hz

f. Press the Back key until the following display

appears --

3--- 0* Reference Limits

3 --- 1 * R e f e r e n c e s

m. Press OK to highlight the number and then use

the Y and B (Up and Down Arrow)keysto select the number provided in Tables 21 -- 25. Press OK again to set the selected value.

n. Press the Back key once, the following display

appears --

1--- 7* Start Adjustments

1 --- 8 * S t o p Ad j u s t m e n t s

o. Press B(Down Arrow) once, the following

display appears --

1 --- 8 * S t o p Ad j u s t m e n t s

1--- 9* Motor Temperature

p. Press OK, the following display appears --

1-90 Motor Thermal Prote…

[4] ETR trip 1

q. Press OK to highlight the number in the bracket

then use the Y and B (Up and Down Arrow) keys to select the number provided in Tables 21

-- 25. Press OK again to set the selected value.

7. Setting References:

a. Press the Menu key to move the B(triangle

icon) so i t is positioned over Main Menu. The display show the following --

0 --- * * O p e r a t i o n / D i s p l a y

1---** Load and Motor

b. Press B(Down Arrow) three times, the following

display appears --

2 --- * * B r a k e s

3 ---** Reference / Ramps

c. Press OK, the following display appears --

3--- 0* Reference Limits

3 --- 1 * R e f e r e n c e s

g. Press B(Down Arrow) once to move the high-

light to the bottom row and then press OK.The following display appears --

3-10 Preset Reference

[0]0.00%

h. Press OK once t o highlight the number in the

bracket. Press OK again; the highlight moves to the current percent value.

Use the Y and B (Up and Down Arrow)keys and the following table to enter the required Preset Reference values.

[0]0.00% Stop

[1]LL.LL% Low Speed (see Tables 21 --- 25,

column labeled “Preset References 3--- 10[1]” for the proper % for each unit)

[2]MM.MM% Medium Speed (see Tables 21 ---25,

column labeled “Preset References 3--- 10[2]” for the proper % for each unit)

[3]100% Override (High Speed)

[4]100% High Speed (100% or close to 100%

to achieve the required CFM at high speed)

[5]0.00% Stop

[6]0.00% Stop

[7]0.00% Stop

8. Setting the Ramp Time:

a. Press the Back key until the following display

appears --

3--- 0* Reference Limits

3 --- 1 * R e f e r e n c e s

b. Press B(Down Arrow) twice, the following

display appears --

3 --- 1 * R e f e r e n c e s

3 --- 4 * R a m p 1

d. Press OK again, the following display appears --

3-02 Minimum Reference

0.000

NOTE: If the bottom row displays a number other than

0.000, press OK and use the Y and B (Up and Down Arrow) key to select 0.000.

e. Press B(Down Arrow) once, the following

display appears --

3-03 Maximum Reference

60.000

NOTE: If the bottom row displays a number other than

60.000, press OK and use the Y and B (Up and Down Arrow) keys to select 60.000.

c. Press OK, the following display appears --

3-41 Ramp 1 Ramp up Time

3.00s

d. Press OK again to highlight the bottom row and

use the Y and B (Up and Down Arrow)keysto select 10.00s. Press OK again to set the selected Ramp up Time.

e. Press B(Down Arrow) once, the following

display appears --

3-42 Ramp 1 Ramp Down Time

3.00s

Page 68

f. Press OK again to highlight the bottom row and

use the Y and B (Up and Down Arrow)keysto select 10.00s. Press OK again to set the selected Ramp Down Time.

9. Setting Limits:

a. Press the Back key until the following display

appears --

2 --- * * B r a k e s

3 ---** Reference / Ramps

b. Press B(Down Arrow) once, the following

display appears --

3 ---** Reference / Ramps

4---** Limits / Warnings

10. Setting Digital Inputs:

a. Press the Back key until the following display

appears --

3 ---** Reference / Ramps

4---** Limits / Warnings

b. Press B(Down Arrow) once, the following

display appears --

4---** Limits / Warnings

5 --- * * D i g i t a l I n / O u t

c. Press OK, the following display appears --

5 --- 0 * D i g i t a l I / O m o d e

5--- 1* Digital Inputs

c. Press OK, the following display appears --

4--- 1* Motor Limits

4 --- 4 * A d j . Wa r n i n g 2

d. Press OK again, the following display appears --

4-10 Motor Speed Direction

[2] Both Directions

e. Press B(Down Arrow) once, the following

display appears --

4-12 Motor Speed Low Limi…

0.0Hz

f. Press B(Down Arrow) again, the following

display appears --

4-14 Motor Speed High Limi…

65.0Hz

NOTE:PressOK to highlight the Hz value and then use the Y and B (Up and Down Arrow) keys to enter the required values.

g. Press B(Down Arrow) once, the following

display appears --

4-18 Current Limit

110%

NOTE:PressOK to highlight the % value and then use the Y and B (Up and Down Arrow) keys to enter the required value. See Tables 21 -- 25 for proper selection of the value for this parameter then press OK to set the selected value.

h. Press B(Down Arrow) once, the following

display appears --

4-19 Max Output Frequency

65.0Hz

NOTE:PressOK to highlight the Hz value and then use the Y and B (Up and Down Arrow) keys to enter the required values.

d. Press B(Down Arrow) once to move the high-

light to the bottom row and then press OK.The following display appears --

5-10 Terminal 18 Digital In…

[8] Start

e. Press B(Down Arrow) again. The following

display appears --

5-11 Terminal 19 Digital In…

[16] Preset ref bit 0

f. Press B(Down Arrow) again. The following

display appears --

5-12 Terminal 27 Digital In…

[17] Preset ref bit 1

g. Press B(Down Arrow) again. The following

display appears --

5-13 Terminal 29 Digital In…

[18] Preset ref bit 2

NOTE: By pressing OK the number in the bracket can be changed until the desired number appears. Press OK again to set the selected value.

11. Setting Analog Inputs:

a. Press the Back key until the following display

appears --

4---** Limits / Warnings

5 --- * * D i g i t a l I n / O u t

b. Press B(Down Arrow) until the following display

appears --

5 --- * * D i g i t a l I n / O u t

6 --- * * A n a l o g I n / O u t

c. Press OK, the following display appears --

6 --- * * A n a l o g I n / O u t

6 --- 1 * A n a l o g In p u t 5 3

Page 69

d. Press B(Down Arrow) once to move the high-

light to the bottom row and then press OK.The following display appears --

6-10 Terminal 53 Low Voltage

e. Press B(Down Arrow) once to move the high-

light to the bottom row and then press OK.The following display appears --

6-11 Terminal 53 High Voltage

[10V]

f. Press B(Down Arrow) once to move the high-

light to the bottom row and then press OK.The following display appears --

6-14 Set Min Reference

[0 Hz]

g. Press B(Down Arrow) once to move the high-

light to the bottom row and then press OK.The following display appears --

6-15 Set Max Reference

[60 Hz]

12. Setting Reset Mode and RFI Filter:

a. Press the Back key until the following display

appears --

0 --- * * O p e r a t i o n / D i s p l a y

1---** Load and Motor

e. Press OK, the following display appears --

14-20 Reset Mode

[0] Manual reset

f. Press OK to highlight the number in the bracket.

g. Use the Y and B (Up and Down Arrow)keys

to change the number to 3 for 3 a utomatic resets andthenpressOK. The display changes to --

14-20 Reset Mode

[3] Automatic reset x 3

h. Press B(Down Arrow) once, the following

display appears --

14-21 Automatic Restart T… 10s

i. Press OK to highlight the number of seconds

and use the Y and B (Up and Down Arrow) keys to select 600 seconds. Press OK again to set the selected value.

j. Press the Back key once, the following di splay

appears --

14--- 1* Mains On/Off

14--- 2* Reset Functions

k. Press B(Down Arrow) twice, the following

display appears --

14--- 4* Energy Optimising

14--- 5* Environment

b. Press B(Down Arrow) until the following display

appears --

1 3 --- * * S m a r t L o g i c

1 4 --- * * S p e c i a l F u n c t i o n s

c. Press OK, the following display appears --

14--- 0* Inverter Switching

14--- 1* Mains On/Off

d. Press B(Down Arrow) twice. The following

display appears --

14--- 1* Mains On/Off

14--- 2* Reset Functions

l. Press OK, the following display appears --

14-50 RFI Filter

[1] On

m. Press OK to highlight the number in the bracket

and use the Y and B (Up and Down Arrow) keys to select [0]. Press OK again to set the selected value.

13. To Complete Reprogramming:

a. Press the Auto On key before disconnecting the

VFD Remote Keypa d from the variable frequency drive.

Page 70

RFI

Filter

Auto.

Restart

Time (S)

Motor

Min S peed

Motor

Preset Reference

Thermal

Protection

for

(Hz)

Function

Start

Flying

(Sec)

Star Delay

(rpm)

Speed

Nominal

Amps)

Current

( M u s t --- H ol d

Mode

Reset

53 High

Ter m i n a l

Reference

53 Low

Ter m i n a l

Reference

Voltage

53 High

Ter m i n a l

53 Low

Voltage

Ter m i n a l

Input

Ter m i n a l

29 Digital

Input

Ter m i n a l

27 Digital

Input

Ter m i n a l

19 Digital

(Hz)

Motor

Frequency

Motor

Voltage

Motor

Power

Table 21 – VFD Unit Parameters -- 48LC Size 14

Grid

Typ e

0 --- 0 3 0 --- 0 6 1 --- 2 0 1 --- 2 2 1 --- 2 3 1 --- 2 4 1 --- 2 5 1 --- 7 1 1 --- 7 3 1 --- 8 2 1 --- 9 0 3 --- 10 [ 0 ] 3 --- 10 [ 1 ] 3 --- 10 [ 2 ]

Settings

Regional

VFD

Mfr P/N

VFD

Carrier P/N

Motor P/N

Ramp

Ter m i n a l

Current

Down

18 Digital

Preset Reference (cont)

Input

Limit

Time

(Sec)

3 --- 1 0 [ 3 ] 3 --- 1 0 [ 4 ] 3 --- 1 0 [ 5] 3 --- 1 0 [ 6 ] 3 --- 1 0 [ 7 ] 3 --- 4 1 3 --- 4 2 4 --- 1 8 5 --- 1 0 5 --- 1 1 5 --- 1 2 5 --- 1 3 6 --- 1 0 6 --- 1 1 6 --- 1 4 6 --- 1 5 14 ---20 14 ---21 14--- 50

Motor

Option

Unit

Size

460V 14 STD HD58FE654 HK30WA377 131L9864 [1] [122] [10] 460 60 4.2 1735 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

575V 14 STD HD58FE577 HK30WA383 131N0227 [1] [132] [11] 575 60 4.9 1710 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

Voltage

208/230V 14 STD HD58FE654 HK30WA371 131L9796 [1] [102] [10] 230 60 9.2 1735 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

208/230V 14 MID HD60FK658 HK30WA372 131L9797 [1 ] [102] [13] 230 60 13.6 1745 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

460V 14 MID HD60FK658 HK30WA379 131L9866 [1] [122] [13] 460 60 6.8 1745 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

575V 14 MID HD60FE576 HK30WA387 134F0217 [1] [132] [13] 575 60 6.0 1745 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

208/230V 14 HIGH HD60FK657 HK30WA373 131L9798 [1] [102] [14] 230 60 21.2 1760 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

460V 14 HIGH HD60FK657 HK30WA380 131L9867 [1] [122] [14] 460 60 9.7 1760 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

575V 14 HIGH HD60FL576 HK30WA384 131N0229 [1] [132] [14] 575 60 7.2 1745 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

208/230V 14 ULTRA HD62FK654 HK30WA374 131L9799 [1] [102] [15] 230 60 28.0 1760 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

460V 14 ULTRA HD62FK654 HK30WA381 131L9868 [1] [122] [15] 460 60 13.7 1760 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

575V 14 ULTRA HD62FL576 HK30WA384 131N0229 [1] [132] [15] 575 60 8.9 1750 2.0 [1] 1.0 [4] 0% 53.43% 79.57%

Motor

Unit

Voltage

Option

Size

460V 14 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 14 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 14 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 14 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 14 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 14 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 14 ULTRA 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 14 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 14 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 14 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 14 ULTRA 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 14 ULTRA 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

Page 71

RFI

Filter

Auto.

Restart

Time (S)

Motor

Min S peed

Motor

Preset Reference

Thermal

Protection

for

(Hz)

Function

Start

Flying

(Sec)

Star Delay

(rpm)

Speed

Nominal

Amps)

Current

( M u s t --- H ol d

(Hz)

Frequency

Mode

Reset

53 High

Ter m i n a l

Reference

53 Low

Ter m i n a l

Reference

Voltage

53 High

Ter m i n a l

53 Low

Voltage

Ter m i n a l

Input

Ter m i n a l

29 Digital

Input

Ter m i n a l

27 Digital

Input

Ter m i n a l

19 Digital

Input

Ter m i n a l

18 Digital

Ramp

Limit

Current

Time

Down

Time

Preset Reference (cont)

(Sec)

3 --- 1 0 [ 3 ] 3 --- 1 0 [ 4 ] 3 --- 1 0 [ 5] 3 --- 1 0 [ 6 ] 3 --- 10 [ 7 ] 3 --- 4 1 3 --- 4 2 4 --- 1 8 5 --- 1 0 5 --- 1 1 5 --- 1 2 5 --- 1 3 6 --- 1 0 6 --- 1 1 6 --- 1 4 6 --- 1 5 14---20 14 ---21 14--- 50

Motor

Option

Unit

Size

Motor

Voltage

Motor

Power

Table 22 – VFD Unit Parameters -- 48LC Size 17

Grid

Typ e

0 --- 0 3 0 --- 0 6 1 --- 2 0 1 --- 2 2 1 --- 2 3 1 --- 2 4 1 --- 2 5 1 --- 7 1 1 --- 7 3 1 --- 8 2 1 --- 9 0 3 --- 1 0 [ 0 ] 3 --- 1 0 [ 1 ] 3 --- 1 0 [ 2 ]

Settings

Regional

VFD

Mfr P/N

VFD

Carrier P/N

Motor P/N

Motor

Option

Unit

Size

460V 17 STD HD58FE654 HK30WA377 131L9864 [1] [122] [10] 460 60 4.2 1735 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

575V 17 STD HD58FE577 HK30WA383 131N0227 [1] [132] [11] 575 60 4.9 1710 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

Voltage

208/230V 17 STD HD58FE654 HK30WA371 131L9796 [1] [102] [10] 230 60 9.2 1735 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

208/230V 17 MID HD60FK657 HK30WA373 131L9798 [1 ] [102] [14] 230 60 21.2 1760 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

460V 17 MID HD60FK657 HK30WA380 131L9867 [1] [122] [14] 460 60 9.7 1760 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

575V 17 MID HD60FL576 HK30WA384 131N0229 [1] [132] [14] 575 60 7.2 1745 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

208/230V 17 HIGH HD62FK654 HK30WA374 131L9799 [1] [102] [15] 230 60 28.0 1760 2.0 [1] 1.0 [4 ] 0% 56.64% 82.40%

460V 17 HIGH HD62FK654 HK30WA381 131L9868 [1] [122] [15] 460 60 13.7 1760 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

575V 17 HIGH HD62FL576 HK30WA384 131N0229 [1] [132] [15] 575 60 8.9 1750 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

208/230V 17 ULTRA HD64FK654 HK30WA375 131L9800 [1] [102] [16] 230 60 37.3 1755 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

460V 17 ULTRA HD64FK654 HK30WA386 131L9869 [1] [122] [16] 460 60 16.9 1755 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

575V 17 ULTRA HD64FL576 HK30WA388 131N0233 [1] [132] [16] 575 60 12.6 1755 2.0 [1] 1.0 [4] 0% 56.64% 82.40%

460V 17 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 17 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 17 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 17 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 17 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 17 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 17 ULTRA 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

Voltage

208/230V 17 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 17 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 17 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 17 ULTRA 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 17 ULTRA 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

Page 72

RFI

Filter

Auto.

Restart

Time (S)

Motor

Min S peed

Motor

Preset Reference

Thermal

Protection

for

(Hz)

Function

Start

Flying

(Sec)

Star Delay

(rpm)

Speed

Nominal

Amps)

Current

( M u s t --- H ol d

(Hz)

Frequency

Mode

Reset

53 High

Ter m i n a l

Reference

53 Low

Ter m i n a l

Reference

Voltage

53 High

Ter m i n a l

53 Low

Voltage

Ter m i n a l

Input

Ter m i n a l

29 Digital

Input

Ter m i n a l

27 Digital

Input

Ter m i n a l

19 Digital

Input

Ter m i n a l

18 Digital

Ramp

Limit

Current

Time

Down

Time

Preset Reference (cont)

(Sec)

Motor

Option

Unit

Size

Motor

Voltage

Motor

Power

Table 23 – VFD Unit Parameters -- 48LC Size 20

Grid

Typ e

0 --- 0 3 0 --- 0 6 1 --- 2 0 1 --- 2 2 1 --- 2 3 1 --- 2 4 1 --- 2 5 1 --- 7 1 1 --- 7 3 1 --- 8 2 1 --- 9 0 3 --- 1 0 [ 0 ] 3 --- 1 0 [ 1 ] 3 --- 1 0 [ 2 ]

Settings

Regional

VFD

Mfr P/N

VFD

Carrier P/N

Motor P/N

Motor

Option

Unit

Size

460V 20 STD HD60FE656 HK30WA378 131L9865 [1] [122] [11] 460 60 5.4 1750 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

575V 20 STD HD58FE577 HK30WA383 131N0227 [1] [132] [11] 575 60 4.9 1710 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

Voltage

208/230V 20 STD HD60FE656 HK30WA372 131L9797 [1] [102] [11] 230 60 11.7 1750 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

208/230V 20 MID HD60FK657 HK30WA373 131L9798 [1 ] [102] [14] 230 60 21.2 1760 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

460V 20 MID HD60FK657 HK30WA380 131L9867 [1] [122] [14] 460 60 9.7 1760 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

575V 20 MID HD60FL576 HK30WA384 131N0229 [1] [132] [14] 575 60 7.2 1745 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

208/230V 20 HIGH HD62FK654 HK30WA374 131L9799 [1] [102] [15] 230 60 28.0 1760 2.0 [1] 1.0 [4 ] 0% 52.57% 61.63%

460V 20 HIGH HD62FK654 HK30WA381 131L9868 [1] [122] [15] 460 60 13.7 1760 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

575V 20 HIGH HD62FL576 HK30WA384 131N0229 [1] [132] [15] 575 60 8.9 1750 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

208/230V 20 ULTRA HD64FK654 HK30WA375 131L9800 [1] [102] [16] 230 60 37.3 1755 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

460V 20 ULTRA HD64FK654 HK30WA386 131L9869 [1] [122] [16] 460 60 16.9 1755 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

575V 20 ULTRA HD64FL576 HK30WA388 131N0233 [1] [132] [16] 575 60 12.6 1755 2.0 [1] 1.0 [4] 0% 52.57% 61.63%

460V 20 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 20 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 20 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 20 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 20 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 20 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 20 ULTRA 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

Voltage

208/230V 20 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 20 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 20 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 20 ULTRA 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 20 ULTRA 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

Page 73

RFI

Filter

Auto.

Restart

Time (S)

Motor

Min S peed

Motor

Preset Reference

Thermal

Protection

for

(Hz)

Function

Start

Flying

(Sec)

Star Delay

(rpm)

Speed

Nominal

Amps)

Current

( M u s t --- H ol d

(Hz)

Frequency

Mode

Reset

53 High

Ter m i n a l

Reference

53 Low

Ter m i n a l

Reference

Voltage

53 High

Ter m i n a l

53 Low

Voltage

Ter m i n a l

Input

Ter m i n a l

29 Digital

Input

Ter m i n a l

27 Digital

Input

Ter m i n a l

19 Digital

Input

Ter m i n a l

18 Digital

Ramp

Limit

Current

Time

Down

Time

Preset Reference (cont)

(Sec)

3 --- 1 0 [ 3 ] 3 --- 1 0 [ 4 ] 3 --- 1 0 [ 5] 3 --- 1 0 [ 6 ] 3 --- 10 [ 7 ] 3 --- 4 1 3 --- 4 2 4 --- 1 8 5 --- 1 0 5 --- 1 1 5 --- 1 2 5 --- 1 3 6 --- 1 0 6 --- 1 1 6 --- 1 4 6 --- 1 5 14---20 14 ---21 14--- 50

Motor

Option

Unit

Size

Motor

Voltage

Motor

Power

Grid

Table 24 – VFD Unit Parameters -- 48 LC Size 24

Typ e

0 --- 0 3 0 --- 0 6 1 --- 2 0 1 --- 2 2 1 --- 2 3 1 --- 2 4 1 --- 2 5 1 --- 7 1 1 --- 7 3 1 --- 8 2 1 --- 9 0 3 --- 1 0 [ 0 ] 3 --- 1 0 [ 1 ] 3 --- 1 0 [ 2 ]

Settings

Regional

VFD

Mfr P/N

VFD

Carrier P/N

Motor P/N

Motor

Option

Unit

Size

460V 24 STD HD60FK657 HK30WA380 131L9867 [1] [122] [14] 460 60 9.7 1760 2.0 [1] 1.0 [4] 0% 52.33% 64.48%

575V 24 STD HD60FL576 HK30WA384 131N0229 [1] [132] [14] 575 60 7.2 1745 2.0 [1] 1.0 [4] 0% 52.33% 64.48%

460V 24 MID HD62FK654 HK30WA381 131L9868 [1] [122] [15] 460 60 13.7 1760 2.0 [1] 1.0 [4] 0% 52.33% 64.48%

Voltage

208/230V 24 STD HD60FK657 HK30WA373 131L9798 [1] [102] [14] 230 60 21.2 1760 2.0 [1] 1.0 [4] 0% 52.33% 64.48%

208/230V 24 MID HD62FK654 HK30WA374 131L9799 [1 ] [102] [15] 230 60 28.0 1760 2.0 [1] 1.0 [4] 0% 52.33% 64.48%

575V 24 MID HD62FL576 HK30WA384 131N0229 [1] [132] [15] 575 60 8.9 1750 2.0 [1] 1.0 [4] 0% 52.33% 64.48%

208/230V 24 HIGH HD64FK654 HK30WA375 131L9800 [1] [102] [16] 230 60 37.3 1755 2.0 [1] 1.0 [4 ] 0% 52.33% 64.48%

460V 24 HIGH HD64FK654 HK30WA386 131L9869 [1] [122] [16] 460 60 16.9 1755 2.0 [1] 1.0 [4] 0% 52.33% 64.48%

575V 24 HIGH HD64FL576 HK30WA388 131N0233 [1] [132] [16] 575 60 12.6 1755 2.0 [1] 1.0 [4] 0% 52.33% 64.48%

460V 24 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 24 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 24 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 24 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 24 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

Voltage

208/230V 24 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 24 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 24 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 24 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

Page 74

RFI

Filter

Auto.

Restart

Time (S)

Motor

Min S peed

Motor

Preset Reference

Thermal

Protection

for

(Hz)

Function

Start

Flying

(Sec)

Star Delay

(rpm)

Speed

Nominal

Amps)

Current

( M u s t --- H ol d

(Hz)

Frequency

Mode

Reset

53 High

Ter m i n a l

Reference

53 Low

Ter m i n a l

Reference

Voltage

53 High

Ter m i n a l

53 Low

Voltage

Ter m i n a l

Input

Ter m i n a l

29 Digital

Input

Ter m i n a l

27 Digital

Input

Ter m i n a l

19 Digital

Input

Ter m i n a l

18 Digital

Ramp

Limit

Current

Time

Down

Time

Preset Reference (cont)

(Sec)

3 --- 1 0 [ 3 ] 3 --- 1 0 [ 4 ] 3 --- 1 0 [ 5] 3 --- 1 0 [ 6 ] 3 --- 10 [ 7 ] 3 --- 4 1 3 --- 4 2 4 --- 1 8 5 --- 1 0 5 --- 1 1 5 --- 1 2 5 --- 1 3 6 --- 1 0 6 --- 1 1 6 --- 1 4 6 --- 1 5 14--- 20 14 ---21 14--- 50

Motor

Option

Unit

Size

Motor

Voltage

Motor

Power

Table 25 – VFD Unit Parameters -- 48LC Size 26

Grid

Typ e

0 --- 0 3 0 --- 0 6 1 --- 2 0 1 --- 2 2 1 --- 2 3 1 --- 2 4 1 --- 2 5 1 --- 7 1 1 --- 7 3 1 --- 8 2 1 --- 9 0 3 --- 1 0 [ 0 ] 3 --- 1 0 [ 1 ] 3 --- 1 0 [ 2 ]

Settings

Regional

VFD

Mfr P/N

VFD

Carrier P/N

Motor P/N

Motor

Option

Unit

Size

460V 26 STD HD60FK657 HK30WA380 131L9867 [1] [122] [14] 460 60 9.7 1760 2.0 [1] 1.0 [4] 0% 60.00% 72.00%

575V 26 STD HD60FL576 HK30WA384 131N0229 [1] [132] [14] 575 60 7.2 1745 2.0 [1] 1.0 [4] 0% 60.00% 72.00%

460V 26 MID HD62FK654 HK30WA381 131L9868 [1] [122] [15] 460 60 13.7 1760 2.0 [1] 1.0 [4] 0% 60.00% 72.00%

Voltage

208/230V 26 STD HD60FK657 HK30WA373 131L9798 [1] [102] [14] 230 60 21.2 1760 2.0 [1] 1.0 [4] 0% 60.00% 72.00%

208/230V 26 MID HD62FK654 HK30WA374 131L9799 [1 ] [102] [15] 230 60 28.0 1760 2.0 [1] 1.0 [4] 0% 60.00% 72.00%

575V 26 MID HD62FL576 HK30WA384 131N0229 [1] [132] [15] 575 60 8.9 1750 2.0 [1] 1.0 [4] 0% 60.00% 72.00%

208/230V 26 HIGH HD64FK654 HK30WA375 131L9800 [1] [102] [16] 230 60 37.3 1755 2.0 [1] 1.0 [4 ] 0% 60.00% 72.00%

460V 26 HIGH HD64FK654 HK30WA386 131L9869 [1] [122] [16] 460 60 16.9 1755 2.0 [1] 1.0 [4] 0% 60.00% 72.00%

575V 26 HIGH HD64FL576 HK30WA388 131N0233 [1] [132] [16] 575 60 12.6 1755 2.0 [1] 1.0 [4] 0% 60.00% 72.00%

460V 26 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 26 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 26 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 26 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

460V 26 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

Voltage

208/230V 26 STD 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 26 MID 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

575V 26 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

208/230V 26 HIGH 100% 100% 0% 0% 0% 10.00 10.00 100% [8] [16] [17] [18] 2 [10] 0 [60] [3] 600 [0]

Page 75

DISC. SIZE

MAX

BRKR

HACR

FUSE or

MCA

DISC. SIZE

MAX

BRKR

HACR

FUSE or

MCA

DISC. SIZE

MAX

BRKR

HACR

FUSE or

MCA

Table 26 – Unit Wire/Fuse or HACR Breaker Sizing Data

NO C.O. or UNPWR C.O. w/ PWRD C.O.

DISC. SIZE

FLA LRA FLA LRA FLA LRA FLA LRA

NO P.E. w/ P.E. (pwrd fr/ unit) NO P.E. w/ P.E. (pwrd fr/ unit)

MAX

BRKR

HACR

FUSE or

MCA

IFM

TYPE

STD 59.1/58.3 80/80 61/60 343 70.9/70.1 90/90 75/74 363 63.9/63.1 80/80 67/66 348 75.7/74.9 90/90 80/79 368

MED 64.1/63.2 80/80 67/66 378 75.9/75.0 90/90 81/80 398 68.9/68.0 90/90 73/72 383 80.7/79.8 100/100 86/85 403

HIGH 71.7 90 76 382 83.5 100 89 402 76.5 90 81 387 88.3 100 95 407

ULTRA 79.7 100 84 456 91.5 100 97 476 84.5 100 89 461 96.3 110 103 481

STD 31.3 40 33 167 37.5 45 40 179 33.5 40 35 169 39.7 50 42 181

MED 33.9 45 36 184 40.1 50 43 196 36.1 45 38 186 42.3 50 45 198

HIGH 37.2 45 40 186 43.4 50 47 198 39.4 50 42 188 45.6 50 49 200

SUPER 41.8 50 44 223 48.0 60 51 235 44.0 50 47 225 50.2 60 54 237

STD 24.4 30 26 119 29.2 35 31 127 26.1 30 28 121 30.9 35 33 129

MED 26.1 30 28 133 30.9 35 33 141 27.8 30 30 135 32.6 40 35 143

HIGH 27.1 30 29 131 31.9 35 34 139 28.8 35 31 133 33.6 40 36 141

ULTRA 29.0 35 31 158 33.8 40 36 166 30.7 35 33 160 35.5 40 38 168

STD 67.4/66.6 90/90 70/69 371 79.2/78.4 100/100 83/82 391 72.2/71.4 90/90 75/74 376 84.0/83.2 100/100 89/88 396

MED 80.0 100 84 410 91.8 100 98 430 84.8 100 90 415 96.6 110 103 435

HIGH 86.9 100 92 484 98.7 125 105 504 91.7 100 97 489 103.5 125 111 509

ULTRA 98.5 125 103 524 110.3 125 116 544 103.3 125 108 529 115.1 150 122 549

STD 34.8 45 36 193 41.0 50 43 205 37.0 45 39 195 43.2 50 46 207

MED 40.7 50 43 212 46.9 60 50 224 42.9 50 46 214 49.1 60 53 226

HIGH 44.9 50 48 249 51.1 60 55 261 47.1 60 50 251 53.3 60 57 263

ULTRA 48.9 60 51 269 55.1 60 59 281 51.1 60 54 271 57.3 70 61 283

STD 30.0 40 32 154 34.8 40 37 162 31.7 40 33 156 36.5 45 39 164

MED 32.7 40 35 166 37.5 45 40 174 34.4 40 37 168 39.2 45 42 176

HIGH 34.4 40 37 193 39.2 45 42 201 36.1 45 39 195 40.9 50 44 203

ULTRA 38.7 50 41 204 43.5 50 46 212 40.4 50 43 206 45.2 50 48 214

NOM.

V --- P h --- H z

UNIT

48LC

208/

2 3 0 --- 3 --- 6 0

208/

4 6 0 --- 3 --- 6 0

5 7 5 --- 3 --- 6 0

2 3 0 --- 3 --- 6 0

4 6 0 --- 3 --- 6 0

5 7 5 --- 3 --- 6 0

See “Legend and Notes for Tables 26 and 27” on page 79.

Page 76

DISC. SIZE

MAX

BRKR

HACR

FUSE or

MCA

DISC. SIZE

MAX

BRKR

HACR

FUSE or

MCA

DISC. SIZE

MAX

BRKR

HACR

FUSE or

MCA

NO C.O. or UNPWR C.O. w/ PWRD C.O.

Table 26 -- Unit Wire/Fuse or HACR Breaker Sizing Data (cont)

DISC. SIZE

FLA LRA FLA LRA FLA LRA FLA LRA

NO P.E. w/ P.E. (pwrd fr/ unit) NO P.E. w/ P.E. (pwrd fr/ unit)

MAX

BRKR

HACR

FUSE or

MCA

IFM

TYPE

STD 73.3/72.5 100/100 76/75 412 85.1/84.3 100/100 90/89 432 78.1/77.3 100/100 82/81 417 89.9/89.1 100/100 95/95 437

MED 85.9 100 91 451 97.7 125 104 471 90.7 100 96 456 102.5 125 110 476

HIGH 92.8 100 99 525 104.6 125 112 545 97.6 125 104 530 109.4 125 118 550

ULTRA 104.4 125 109 565 116.2 150 123 585 109.2 125 115 570 121.0 150 128 590

STD 37.2 50 39 231 43.4 50 46 243 39.4 50 42 233 45.6 50 49 245

MED 43.1 50 46 250 49.3 60 53 262 45.3 50 48 252 51.5 60 56 264

HIGH 47.3 60 50 287 53.5 60 58 299 49.5 60 53 289 55.7 60 60 301

ULTRA 51.3 60 54 307 57.5 70 61 319 53.5 60 57 309 59.7 70 64 321

STD 31.8 40 34 182 36.6 45 39 190 33.5 40 36 184 38.3 45 41 192

MED 34.5 40 37 194 39.3 45 42 202 36.2 45 39 196 41.0 50 44 204

HIGH 36.2 45 39 221 41.0 50 44 229 37.9 45 41 223 42.7 50 46 231

ULTRA 40.5 50 43 232 45.3 50 48 240 42.2 50 45 234 47.0 60 50 242

STD 101.9 125 108 538 113.7 125 121 558 106.7 125 113 543 118.5 150 127 563

MED 108.7 125 115 612 120.5 150 129 632 113.5 125 121 617 125.3 150 135 637

HIGH 119.0 150 126 652 130.8 150 140 672 123.8 150 132 657 135.6 150 145 677

STD 56.6 70 60 278 62.8 80 67 290 58.8 70 62 280 65.0 80 70 292

MED 60.6 70 65 315 66.8 80 72 327 62.8 80 67 317 69.0 80 74 329

HIGH 63.8 80 68 335 70.0 80 75 347 66.0 80 71 337 72.2 90 78 349

STD 45.0 50 48 206 49.8 60 54 214 46.7 50 50 208 51.5 60 56 216

MED 46.7 50 50 233 51.5 60 56 241 48.4 60 52 235 53.2 60 58 243

HIGH 50.4 60 54 244 55.2 60 60 252 52.1 60 56 246 56.9 70 62 254

STD 124.9 175 129 629 136.7 175 142 649 129.7 175 134 634 141.5 175 148 654

MED 131.7 175 137 703 143.5 175 150 723 136.5 175 142 708 148.3 175 156 728

HIGH 141.0 175 147 743 152.8 200 161 763 145.8 175 153 748 157.6 200 167 768

STD 64.9 80 68 322 71.1 90 75 334 67.1 90 70 324 73.3 90 78 336

MED 68.9 90 73 359 75.1 90 80 371 71.1 90 75 361 77.3 100 82 373

HIGH 72.1 90 76 379 78.3 100 83 391 74.3 90 79 381 80.5 100 86 393

STD 53.9 60 56 235 58.7 70 62 243 55.6 70 58 237 60.4 80 64 245

MED 55.6 70 58 262 60.4 80 64 270 57.3 70 60 264 62.1 80 66 272

HIGH 59.3 70 62 273 64.1 80 68 281 61.0 80 64 275 65.8 80 70 283

NOM.

V --- P h --- H z

UNIT

48LC

208/

2 3 0 --- 3 --- 6 0

208/

4 6 0 --- 3 --- 6 0

5 7 5 --- 3 --- 6 0

2 3 0 --- 3 --- 6 0

4 6 0 --- 3 --- 6 0

5 7 5 --- 3 --- 6 0

208/

2 3 0 --- 3 --- 6 0

4 6 0 --- 3 --- 6 0

5 7 5 --- 3 --- 6 0

See “Legend and Notes for Tables 26 and 27” on page 79.

Page 77

DISC. SIZE

BRKR

HACR

MCA

DISC. SIZE

BRKR

HACR

MCA

DISC. SIZE

BRKR

HACR

MCA

NO C.O. or UNPWR C.O. w/ PWRD C.O.

DISC. SIZE

Table 27 – Unit Wire Sizing Data with Factory--Installed HACR Breaker

FLA LRA FLA LRA FLA LRA FLA LRA

NO P.E. w/ P.E. (pwrd fr/ unit) NO P.E. w/ P.E. (pwrd fr/ unit)

BRKR

HACR

MCA

IFM

TYPE

STD 59.1/59.1 80/80 61/60 343 70.9/70.9 90/90 75/74 363 63.9/63.9 80/80 67/66 348 75.7/75.7 90/90 80/79 368

MED 64.1/64.1 80/80 67/66 378 75.9/75.9 90/90 81/80 398 68.9/68.9 90/90 73/72 383 80.7/80.7 100/100 86/85 403

HIGH 71.7 90 76 382 83.5 100 89 402 76.5 90 81 387 88.3 100 95 407

ULTRA 79.7 100 84 456 91.5 100 97 476 84.5 100 89 461 96.3 110 103 481

STD 31.3 40 33 167 37.5 45 40 179 33.5 40 35 169 39.7 50 42 181

MED 33.9 45 36 184 40.1 50 43 196 36.1 45 38 186 42.3 50 45 198

HIGH 37.2 45 40 186 43.4 50 47 198 39.4 50 42 188 45.6 50 49 200

ULTRA 41.8 50 44 223 48.0 60 51 235 44.0 50 47 225 50.2 60 54 237

STD 24.4 30 26 119 29.2 35 31 127 26.1 30 28 121 30.9 35 33 129

MED 26.1 30 28 133 30.9 35 33 141 27.8 30 30 135 32.6 40 35 143

HIGH 27.1 30 29 131 31.9 35 34 139 28.8 35 31 133 33.6 40 36 141

ULTRA 29.0 35 31 158 33.8 40 36 166 30.7 35 33 160 35.5 40 38 168

STD 67.4/67.4 90/90 70/69 371 79.2/79.2 100/100 83/82 391 72.2/72.2 90/90 75/74 376 84.0/84.0 100/100 89/88 396