ICP RGV-036-072-02SI User Manual

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Page 1

RGV036-072

Single Package Rooftop

Gas Heating/Electric Cooling Unit

with R-410A Refrigerant

Installation Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . 1

MODEL NUMBER NOMENCLATURE AND

DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . 3

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Step 1 — Plan for Unit Location . . . . . . . . . . . . 8

• ROOF MOUNT

Step 2 — Plan for Sequence of Unit

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

• CURB-MOUNTED INSTALLATION

• PAD-MOUNTED INSTALLATION

• FRAME-MOUNTED INSTALLATION

Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . 8

Step 4 — Provide Unit Support . . . . . . . . . . . . . 8

• ROOF CURB MOUNT

• SLAB MOUNT (HORIZONTAL UNITS ONLY)

• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR

SLAB MOUNT)

Step 5 — Field Fabricate Ductwork . . . . . . . . . 10

Step 6 — Rig and Place Unit . . . . . . . . . . . . . . 10

• POSITIONING ON CURB

Step 7 — Convert to Horizontal and Connect

Ductwork (When Required) . . . . . . . . . . . . . 11

Step 8 — Install Outside Air Hood . . . . . . . . . 12

• ECONOMIZER AND TWO-POSITION DAMPER

HOOD PACKAGE REMOVAL AND SETUP

(FACTORY OPTION)

• ECONOMIZER AND 2-POSITION HOOD

Step 9 — Units with Hinged Panels Only . . . . 13

Step 10 — Install Flue Hood . . . . . . . . . . . . . . 13

Step 11 — Install Gas Piping . . . . . . . . . . . . . . 13

• FACTORY OPTION THRU-BASE CONNECTIONS

(GAS CONNECTIONS)

Step 12 — Install External Condensate Trap and

Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Step 13 — Make Electrical Connections . . . . . 17

• FIELD POWER SUPPLY

• UNITS WITH FACTORY-INSTALLED NON-FUSED

DISCONNECT

• UNITS WITHOUT FACTORY-INSTALLED

NON-FUSED DISCONNECT

• ALL UNITS

• CONVENIENCE OUTLETS

• FACTORY-OPTION THRU-BASE CONNECTIONS

(ELECTRICAL CONNECTIONS)

• UNITS WITHOUT THRU-BASE CONNECTIONS

(ELECTRICAL CONNECTIONS)

• FIELD CONTROL WIRING

• THERMOSTAT

• HEAT ANTICIPATOR SETTINGS

• HOT GAS RE-HEAT CONTROL CONNECTIONS

• TYPICAL UNIT WIRING DIAGRAMS

Integrated Gas Controller . . . . . . . . . . . . . . . . 27

Hot Gas Re-Heat Dehumidification System

(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

• NORMAL COOLING

• DEHUM/MECH COOLING (SUBCOOLING) MODE

• DEHUMIDIFICATION (HOT GAS REHEAT) MODE

• REHEAT CONTROL

EconomizerONE (Factory Option) . . . . . . . . . 32

• ECONOMIZER SETTINGS

•WIRING

• SETUP AND CONFIGURATION

• INSTALLING OPTIONAL 1196582 SINGLE OUTSIDE AIR ENTHALPY SENSOR

•CHECKOUT

• TROUBLESHOOTING

Controller Options . . . . . . . . . . . . . . . . . . . . . . 53

• LOW AMBIENT

Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . 53

Step 14 — Adjust Factory-Installed Options . 54

•SMOKE DETECTORS

• ECONOMIZERONE OCCUPANCY SWITCH

Step 15 — Install Accessories . . . . . . . . . . . . 54

Step 16 — Fan Speed Set Up . . . . . . . . . . . . . 55

• UNITS WITH ELECTROMECHANICAL CONTROLS

START-UP CHECKLIST. . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes, including ANSI (American National Standards Institute) Z223.1. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguisher available for all brazing operations.

It is important to recognize safety information. This is the safety-alert symbol . When you see this symbol on the 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 severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe

Form No. RGV-036-072-02SI Rev. B Pg 1 3-24 Replaces: RGV-036-072-01SI

Page 2

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.

DANGER

ELECTRICAL SHOCK HAZARD Failure to follow this warning will result in personal injury

or death. Before performing service or maintenance operations

on unit, turn off main power switch to unit and install lock(s) and lockout tag(s). Ensure electrical service to rooftop unit agrees with voltage and amperage listed on the unit rating plate. Unit may have more than one power switch.

WARNING

FIRE, EXPLOSION HAZARD Failure to follow this warning could result in death,

serious personal injury and/or property damage. Disconnect gas piping from unit when pressure testing at

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

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 combustion products into the building.

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

AVERTISSEMENT

RISQUE D’INTOXICATION AU MONOXYDE DE CARBONE

Si ces directives ne sont pas suivies, cela peut entraîner des blessures graves ou une intoxication au monoxyde de carbone pouvant causer la mort, si des produits de combustion s’infiltrent dans le bâtiment.

Vérifier que toutes les ouvertures pratiquées dans le mur extérieur autour du ou des tuyaux d’évent (et de la prise d’air) sont scellées de manière à empêcher l’infiltration de produits de combustion dans le bâtiment.

Veiller à ce que la ou les sorties de l’évent de l’appareil de chauffage (et la prise d’air) ne soient, en aucune façon, obstruées, quelle que soit la saison.

WARNING

UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could cause personal

injury, death and/or equipment damage. R-410A refrigerant systems operate at higher pressures

than standard R-22 systems. Do not use R-22 service equipment or components on R-410A refrigerant equipment.

WARNING

PERSONAL INJURY AND ENVIRONMENTAL HAZARD

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

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

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

CAUTION

PERSONAL INJURY 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.

FIRE HAZARD Failure to follow this warning could result in severe

personal injury and/or property damage. Inlet pressure tap set screw must be tightened and

1/8 in. NPT pipe plug must be installed to prevent gas leaks.

Gas Valve

Inlet Pressure

Tap Set Screw

Page 3

WARNING

FIRE HAZARD Failure to follow this warning could result in severe

personal injury and/or property damage. Manifold pressure tap set screw must be tightened and

1/8 in. NPT pipe plug must be installed to prevent gas leaks.

Manifold Pressure

Tap Set Screw

Manifold

Gas Valve

MODEL NUMBER NOMENCLATURE AND

DIMENSIONS

See Fig. 1 for RGV model number nomenclature. See Fig. 2 for unit dimensional drawings. Figure 2 also shows service clearance dimensions.

Rated Indoor Airflow

Table 1 lists the rated indoor airflow used for the AHRI efficiency rating for the units covered in this document.

Table 1 — Rated Indoor Airflow

MODEL NUMBER RATED INDOOR AIRFLOW (cfm)

RGV036/037 1050 RGV048/049 1500

RGV060 2000 RGV061 1875 RGV072 2400

Page 4

MODEL SERIES

RGV0 6 0 LDDA0AAA

Position Number

12345678910111213

Type

Voltage

Heating Capacity

Outdoor Air Options / Control

0A = No Options 4B = Non-Fused Disconnect Switch AA = Hinged Access Panels AT = Un-Powered Convenience Outlet BB = Powered Convenience Outlet BP = Return Air Smoke Detector BR = Supply Air Smoke Detector CJ = Condensate Overflow Switch Factory-Installed Options⁵

A = Aluminum / Copper Cond & Evap Coil B = Precoat Alum/Copper Cond with Alum / Copper Evap (3 phase only) C = E-Coated Alum/Copper Cond with Alum / Copper Evap (3 phase only) D = E-Coated Alum / Copper Cond & Evap (3 phase only) E = Copper/Copper Cond & Alum/Copper Evap (3 phase only) F = Copper/Copper Cond & Evap (3 phase only)

Condenser / Evaporator Coil Configuration

A = Standard Controls for Factory-Installed W7212 (036-061 sizes) and All Field-Installed Economizers B = Factory-Installed EconoMi$er

X with W7220 Economizer Controller

C = Factory-Installed EconomizerONE with POL224 Economizer Controller

Economizer Control

Units meet Department of Energy 2023 SEER2 requirements.

For units meeting SEER2 requirements, choose 037/049/061. For units meeting SEER requirements, choose 036/048/060.

The following are not available as factory-installed options for models with this voltage code: coated or copper fin coils, economizers and

two-position damper, powered convenience outlet, and Hot Gas Re-Heat.

Hot Gas Re-Heat system includes Low Ambient controller.

FIOPs installed in combination use different codes. Contact your sales representative for details.

Unit Efficiency

Motor Option (Indoor Fan)

036 = 36,000 BTUH = 3 Tons SEER 048 = 48,000 BTUH = 4 Tons SEER 060 = 60,000 BTUH = 5 Tons SEER 072 = 72,000 BTUH = 6 Tons

H = 208/230-3-60 K = 208/230-1-60

L = 460-3-60 S = 575-3-60

D = Low Heat E = Medium Heat F = High Heat L = Low NOx, Low Heat (sizes 036-061 only), includes Stainless Steel HX S = Low Heat, Stainless Steel Heat Exchanger R = Medium Heat, Stainless Steel Heat Exchanger T = High Heat, Stainless Steel Heat Exchanger

D = Direct Drive X-Vane™ Fan – Standard Static E = Direct Drive X-Vane Fan – High Static F = Direct Drive X-Vane Fan – Medium Static G = Direct Drive X-Vane Fan – High Static with Hot Gas Re-Heat

A = None B = Economizer with Barometric relief, OA Temp sensor E = Economizer with Barometric relief + CO sensor, OA Temp sensor H = Economizer with Barometric relief, enthalpy sensor L = Economizer with Barometric relief + CO sensor, enthalpy sensor P = Two-Position Damper (036-061 models only) U = Temp Ultra Low Leak Economizer with Barometric relief W = Enthalpy Ultra Low Leak Economizer with Barometric relief

R = Rooftop

G = Gas Heat / Electric Cooling

V = Standard Efficiency 1

4 SEER and 13.4 SEER2

Nominal

Cooling

Capacity²

037 = 36,000 BTUH = 3 Tons SEER2

049 = 48,000 BTUH = 4 Tons SEER2

061 = 60,000 BTUH = 5 Tons SEER2

Fig. 1 — RGV036-072 Model Number Nomenclature

Page 5

Fig. 2 — Unit Dimensional Drawing

Page 6

Fig. 2 — Unit Dimensional Drawing (cont)

Page 7

Fig. 2 — Unit Dimensional Drawing (cont)

Page 8

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. 2 on page 6.

NOTE: Consider also the effect of adjacent units. Be sure that unit is installed such that snow will not block the

combustion intake or flue outlet. Unit may be installed directly on wood flooring 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 provided in accordance with Section 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 to 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 Install External Condensate Trap and Line on page 17 for required trap dimensions.

ROOF MOUNT Check building codes for weight distribution requirements.

Unit operating weights are shown in Table 2.

Table 2 — Operating Weights

RGV

Base Unit 482 (219) 543 (246) 556 (252) 607 (275) Economizer

Vertical 50 (23) 50 (23) 50 (23) 50 (23) Horizontal 80 (36) 80 (36) 80 (36) 80 (36)

Hot Gas Re-Heat Cu Fins 25 (11) 43 (20) 56 (25) 56 (25) Powered Outlet 35 (16) 35 (16) 35 (16) 35 (16) Curb

14 in. (356 mm) 115 (52) 115 (52) 115 (52) 115 (52) 24 in. (610 mm) 197 (89) 197 (89) 197 (89) 197 (89)

System 50 (23) 50 (23) 80 (36 80 (36)

036/037 048/049 060/061 072

UNIT lb (kg)

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

1. Install curb.

2. Install field-fabricated ductwork inside curb.

3. Install accessory thru-base service connection package (affects curb and unit) (refer to accessory installation instructions for details).

4. Prepare bottom condensate drain connection to suit planned condensate line routing (refer to Install External Condensate Trap and Line on page 17 for details).

5. Rig and place unit.

6. Install outdoor air hood.

7. Install flue hood.

8. Install gas piping.

9. Install condensate line trap and piping.

10. Make electrical connections.

11. Install other accessories.

PAD-MOUNTED INSTALLATION

1. Prepare pad and unit supports.

2. Check and tighten the bottom condensate drain connection plug.

3. Rig and place unit.

4. Convert unit to side duct connection arrangement.

5. Install field-fabricated ductwork at unit duct openings.

6. Install outdoor air hood.

7. Install flue hood.

8. Install gas piping.

9. Install condensate line trap and piping.

10. Make electrical connections.

11. Install other accessories.

FRAME-MOUNTED INSTALLATION Frame-mounted applications generally follow the sequence

for a curb installation. Adapt the sequence as required to suit specific installation plan.

Step 3 — Inspect Unit

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

Confirm before installation 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 snug and in closed position.

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

Step 4 — Provide Unit Support

ROOF CURB MOUNT Accessory roof curb details and dimensions are shown in

Fig. 3 (on page 9). Assemble and install accessory roof curb in accordance with instructions shipped with the curb.

Page 9

7/16" [11]

4 9/16" [115.5]

1/4"

[7.0]

5' 7-3/8"

[1711.3]

1' 4-13/16" [427] INSIDE

1-3/4" [44.4]

2-3/8" [61]

1-3/4" [44.5]

1.00" [25.4]

"A"

1-3/4" [44.4]

21.74"

[552.2]

5.42"

[137.7]

11.96"

[303.8]

4.96"

[126.0]

70.87"

[1800.2]

40.69"

[1033.5]

21.84"

[554.7]

16.03"

[407.2]

1.75"

[44.5]

20.41"

[518.3]

3.00" [76.2]

13.78"

[350.0]

14.00"

[355.6]

3.00" [76.2]

15.19"

[385.8]

32.19"

[817.6]

3'-1 3/16"

[944.6]

"A"

1-3/4" [44.5]

CRBTMPWR001A01 3/4" [19] NPT

3/4" [19] NPT

1/2" [12.7] NPT

CRRFCURB002A01

CONNECTOR PKG. ACC. GAS CONNECTION TYPE GAS FITTING

POWER WIRING

FITTING

CONTROL WIRING

FITTING

ACCESSORY CONVENIENCE

OUTLET WIRING CONNECTOR

THRU THE CURB

1/2" [12.7] NPT 1/2" [12.7] NPT

CRBTMPWR003A01 THRU THE BOTTOM

ROOF CURB

ACCESSORY #

CRRFCURB001A01

14"

[356]

24"

[610]

NOTES:

1. ROOFCURB ACCESSORY IS SHIPPED DISASSEMBLED.

2. INSULATED PANELS: 25.4 [1"] THK. POLYURETHANE FOAM, 44.5 [1-3/4] # DENSITY.

3. DIMENSIONS IN [ ] ARE IN MILLIMETERS.

4. ROOFCURB: 18 GAUGE STEEL.

5. ATTACH DUCTWORK TO CURB. (FLANGES OF DUCT REST ON CURB).

6. SERVICE CLEARANCE 4 FEET ON EACH SIDE.

7. DIRECTION OF AIR FLOW.

8. CONNECTOR PACKAGE CRBTMPWR001A01 IS FOR THRU-THE-CURB GAS TYPE PACKAGE CRBTMPWR003A01 IS FOR THRU-THE-BOTTOM TYPE GAS CONNECTIONS.

TYPICAL (4) SIDES

SUPPLY AIR RETURN AIR

ROOFING MATERIAL

(FIELD SUPPLIED)

CANT STRIP

(FIELD SUPPLIED)

ROOFING FELT

(FIELD SUPPLIED)

COUNTER FLASHING

(FIELD SUPPLIED)

UNIT

GASKET

(SUPPLIED WITH CURB)

RIGID INSULATION

(FIELD SUPPLIED)

DUCT

(FIELD SUPPLIED)

NAIL (FIELD SUPPLIED)

VIEW "B"

CORNER DETAIL

SEE VIEW "B"

RETURN AIR

SUPPLY AIR

SUPPLY AIR OPENING

RETURN AIR OPENING

GAS SERVICE PLATE THRU THE CURB DRILL HOLE 2" [50.8] @ ASSEMBLY (IF REQUIRED) (SEE NOTE #8)

SEE NOTE #2

11 3/4"[298.5] WIDE INSULATED DECK PANELS

8 9/16"[217.5] WIDE INSULATED DECK PANEL

1/3/4"[44.5]

SCALE 0.250

E-ESECTION

48TC400427

Fig. 3 — Roof Curb Details

Page 10

NOTE: The gasketing of the unit to the roof curb is critical

Maximum Allowable Difference, in. (mm)

A-B B-C A-C

0.5 (13) 1.0 (25) 1.0 (25)

for a watertight seal. Install gasket supplied with the roof curb as shown in Fig. 3. 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. 4. Refer to Accessory Roof Curb Installation Instructions for additional information as required.

Install insulation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb and not to the unit. The accessory thru-the-base power and gas connection package must be installed before the unit is set on the roof curb. If field-installed thru-the-roof curb gas connections are desired, use factory-supplied

duct opening dimensions for the first 18 in. (458 mm) of duct length from the unit basepan.

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.

Step 6 — Rig and Place Unit

1/2 in. pipe coupling and gas plate assembly to mount the thru-the-roof curb connection to the roof curb. Gas connections and power connections to the unit must be field-installed after the unit is installed on the roof curb.

NOTE: If electric and control wiring is to be routed through the basepan, attach the accessory thru-the-base service connections to the basepan in accordance with the accessory installation instructions.

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

CAUTION

roof.

Keep unit upright and do not drop. Spreader bars are required. Rollers may be used to move unit across a roof. Rigging materials under unit (cardboard or wood) must be removed PRIOR to placing the unit on the roof curb. Level by using unit frame as a reference. See Table 2

and Fig. 5 for additional information. Lifting holes are provided in base rails as shown in Fig. 5.

Refer to rigging instructions on unit. Rigging materials under unit (cardboard or wood to pre-

vent basepan damage) must be removed PRIOR to placing the unit on the roof curb.

When using the standard side drain connection, ensure

the red plug in the alternate bottom connection is tight. Do this before setting the unit in place. The red drain plug can be tightened with a 1/2 in. square socket drive extension. For further details, see “Install External Condensate

Fig. 4 — Unit Leveling Tolerances

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

Trap and Line” on page 17. Before setting the unit onto the curb, recheck gasketing

on curb.

POSITIONING ON CURB

in front of condenser coil air inlet to prevent grass and foliage from obstructing airflow.

CAUTION

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 3 equally spaced 4 in. x 4 in. (102 mm x 102 mm) pads on each side.

Step 5 — Field Fabricate Ductwork

Cabinet return-air static pressure (a negative condition) shall not exceed 0.35 in. wg (87 Pa) with economizer or

0.45 in. wg (112 Pa) 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

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.

If using top crate as spreader bar, once unit is set, carefully lower wooden crate off building roof top to ground. Ensure that no people or obstructions are below prior to lowering the crate.

Position unit on roof curb so that the following clearances are maintained: 1/4 in. (6.4 mm) clearance between the roof curb and the base rail inside the front and rear,

0.0 in. clearance between the roof curb and the base rail

inside on the duct end of the unit. This will result in the distance between the roof curb and the base rail inside on the condenser end of the unit being approximately 1/4 in. (6.4 mm).

Page 11

Fig. 5 — Rigging Details

Required Spreader

Bars

"B"

36-54 in.

(914-1371 mm)

"C"

"A"

See Detail "A"

Place all seal strips

in place before

placing unit on roof curb

Duct End

Detail "A"

Fan

Side

NOTE(S):

1. SPREADER BARS ARE REQUIRED. Top damage will occur if spreader bars are not used.

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

UNIT

MAXIMUM WEIGHT

DIMENSIONS

ABC

lb kg in. mm in. mm in. mm

RGV036/037 784 356 74.5 1890 37.6 955 33.5 850 RGV048/049 890 404 74.5 1890 36.5 925 33.5 850 RGV060/061 903 410 74.5 1890 36.5 925 33.5 850

RGV072 1020 463 74.5 1890 36.0 915 41.5 1055

Removable Horizontal Supply Duct Opening Cover

Removable Horizontal Return Duct Opening Cover

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

Flue vent discharge must have a minimum horizontal clearance of 4 ft (1220 mm) from electric and gas meters, gas regulators, and gas relief equipment. Minimum distance between unit and other electrically live parts is 48 in. (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.

NOTE: Installation of accessory flue discharge deflector kit will reduce the minimum clearance to combustible material to 18 in. (460 mm).

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

Step 7 — Convert to Horizontal and Connect Ductwork (When Required)

Unit is shipped in the vertical duct configuration. Unit without

Fig. 6 — Horizontal Conversion Panels

Notches

factory-installed economizer or return-air smoke detector option may be field-converted to horizontal ducted configuration. To convert to horizontal configuration, remove screws from side duct opening covers (see Fig. 6) and remove covers. Use the screws to install the covers on vertical duct openings with the insulation-side down. The panels must be inserted into the notches on the basepan to properly seal. The notches are covered by the tape used to secure the insulation to the basepan and are not easily seen. See Fig. 7 for position of the notches in the basepan. Seals around duct openings must be tight. Secure with

Basepan

screws as shown in Fig. 8. Cover seams with foil duct tape. Field-supplied flanges should be attached to horizontal duct

openings 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.

Do not cover or obscure visibility to the unit’s informative data plate when insulating horizontal ductwork.

Fig. 7 — Location of Notches

Notches

Page 12

Step 8 — Install Outside Air Hood

Screws

Duct Covers Sheet Metal Face Up

Basepan

Filter Access Panel

Outdoor-Air Opening and Indoor Coil Access Panel

Compressor Access Panel

Hood Parts

Plastic Tie Wrap Qty (2)

Screws for Metal Tray Qty (2)

ECONOMIZER AND TWO-POSITION DAMPER HOOD PACKAGE REMOVAL AND SETUP (FACTORY OPTION)

NOTE: Economizer and two-position damper are not available as factory installed options for single phase (-K voltage code) models. Two-position damper is not available for 072 models.

The hood is shipped in knock-down form and must be field assembled. The indoor coil access panel is used as the hood top while the hood sides, divider and filter are packaged together, attached to a metal support tray using plastic stretch wrap, and shipped in the return air compartment behind the indoor coil access panel. The hood assembly’s metal tray is attached to the basepan and also attached to the damper using 2 plastic tie-wraps.

1. To gain access to the hood, remove the filter access panel. See Fig. 9.

2. Locate the (2) screws holding the metal tray to the basepan and remove. Locate and cut the (2) plastic tie-wraps securing the assembly to the damper. See Fig. 10. Be careful to not damage any wiring or cut tie-wraps securing any wiring.

3. Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the steps outlined in the Economizer Hood and 2Position Hood section.

Fig. 8 — Horizontal Duct Panels In Place

Fig. 9 — Typical Access Panel Locations

Fig. 10 — Economizer and Two-Position Damper

Hood Parts Location

ECONOMIZER AND 2-POSITION HOOD NOTE: If the power exhaust accessory is to be installed on

the unit, the hood shipped with the unit will not be used and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly.

1. The indoor coil access panel will be used as the top of the hood. Remove the screws along the sides and bottom of the indoor coil access panel. See Fig. 11.

2. Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Use the screws provided to attach the hood sides to the hood top. Use screws provided to attach the hood sides to the unit. See Fig. 12.

3. Remove the shipping tape holding the economizer barometric relief damper in place (economizer only).

4. Insert the hood divider between the hood sides. See Fig. 12 and 13. Secure hood divider with 2 screws on each hood side. The hood divider is also used as the bottom filter rack for the aluminum filter.

5. Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position past the open filter clips. Close the filter clips to lock the filter into place. See Fig. 13.

6. Caulk the ends of the joint between the unit top panel and the hood top.

7. Replace the filter access panel.

Page 13

Fig. 11 — Indoor Coil Access Panel Relocation

Top Panel

Indoor Coil Access Panel

Indoor

Coil

Access

Panel

Caulk Here

Top Panel

To p Panel

Indoor Coil Access Panel

Screw

Left Hood Side

Hood Divider

33-3/8 in. (848mm)

19-1/16 in.

(483mm)

19-1/16 in.

(483mm)

Blower Access Panel

Flue Opening

Compressor Door

Outdoor Coil

Latch

Fig. 14 — Compressor Door Latch Location

Step 10 — Install Flue Hood

Flue hood is shipped screwed to the basepan beside the burner compartment access panel. Remove from shipping location and using screws provided, install flue hood and screen in location shown in Fig. 15.

Fig. 12 — Economizer Hood Construction

Divider

Outside Air

Hood

Cleanable Aluminum Filter

Barometric Relief

Fig. 13 — Economizer Filter Installation

Step 9 — Units with Hinged Panels Only

If the unit does not have hinged panels, skip this step and

Filter

Filter Clip

continue at Step 10 below. Relocate latch shipped inside the compressor compartment

behind the hinged compressor door to location shown in Fig. 14 after unit installation.

Fig. 15 — Flue Hood Details

Step 11 — Install Gas Piping

Installation of the gas piping must be 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 and CAN/CSA B149.2 installation codes for gas burning appliances.

This unit is factory equipped for use with Natural Gas (NG) 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.

Furnace gas input rate on rating plate is for installation up to 2000 ft (610 m) above sea level. 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 4 in. wg (996 Pa) or greater than 13 in. wg (3240 Pa) while the unit is operating. On RGV size 048-072 high-heat units, the gas pressure at unit gas connection must not be less than 5 in. wg (1245 Pa) or greater than 13 in. wg (3240 Pa) while the unit is operating, see Table 3. For liquefied 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, see Table 4.

Page 14

Table 3 — Natural Gas Supply Line Pressure Ranges

NOTE(S):

STEEL PIPE

NOMINAL DIAMETERS (in.)

SPACING OF SUPPORTS

X DIMENSION (ft)

1/2 6

3/4 or 1 8

1-1/4 or larger 10

UNIT MODEL UNIT SIZE MINIMUM MAXIMUM

RGV****D/E/S/R

(Low or Medium Heat)

RGV****F/T

(High Heat Units Only)

036/037, 048/049,

060/061, 072

048/049,

060/061, 072

4.0 in. wg (996 Pa)

5.0 in. wg

(1245 Pa)

13.0 in. wg (3240 Pa)

Table 4 — Liquid Propane Supply Line Pressure

Ranges

UNIT MODEL UNIT SIZE MINIMUM MAXIMUM

RGV****D/E/S/R

(Low or Medium Heat)

RGV****F/T

(High Heat Units Only)

036/037, 048/049,

060/061, 072

048/049,

060/061, 072

11.0 in. wg (2740 Pa)

13.0 in. wg (3240 Pa)

The gas supply pipe enters the unit at the burner access panel on the front side of the unit, through the long slot at the bottom of the access panel. The gas connection to the unit is made to the 1/2 in. FPT gas inlet port on the unit gas valve.

Manifold pressure is factory-adjusted for natural gas fuel use. Adjust as required to obtain best flame characteristics. See Table 5.

Manifold pressure for LP fuel use must be adjusted to specified range. Follow instructions in the accessory kit to make initial readjustment. See Table 6.

Table 5 — Natural Gas Manifold Pressure Ranges

UNIT MODEL UNIT SIZE HIGH FIRE LOW FIRE

RGV****D/E/S/R

(Low or Medium Heat)

RGV****F/T

(High Heat Units Only)

036/037, 048/049,

060/061, 072

048/049,

060/061, 072

3.5 in. wg (872 Pa)

See Table

Footnote

See Table

Footnote

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 size smaller than 1/2 in. Size 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 3 ways: horizontally from outside the unit (across the roof), thrucurb/under unit basepan (accessory kit required), or through unit basepan (factory option or accessory kit required). Consult accessory kit installation instructions for details on these installation methods. Observe clearance to gas line components per Fig. 16.

9 in. Minimum Clearance

For Panel Removal

Manual Gas

Base Unit

Base Rail

From Gas Meter

LEGEND NFGC — National Fuel Gas Code

NOTE: Follow all local codes. *Field-installed.

Roof Curb

Shutoff Valve

48 in. Minimum

Drip Leg Per NFGC

Gas

Regulator

Field-Fabricated

Support

a Low Fire, 1.7 in. wg (423 Pa), applies to the following 3-phase voltage units

only: RGV036*E and RGV048/060/072*F.

Table 6 — Liquid Propane Manifold Pressure Ranges

UNIT MODEL UNIT SIZE HIGH FIRE LOW FIRE

RGV****D/E/S/R

(Low or Medium Heat)

RGV****F/T

(High Heat Units Only)

a Low Fire, 5.0 in. wg (1245 Pa), applies to the following 3-phase voltage units

only: RGV036*E and RGV048/060/072*F.

036/037, 048/049,

060/061, 072

048/049,

060/061, 072

10 in. wg

(2490 Pa)

10 in. wg

(2490 Pa)

See Table

Footnote

See Table

Footnote

CAUTION

EQUIPMENT DAMAGE Failure to follow this caution may result in equipment

damage. When connecting the gas line to the unit gas valve, the

installer MUST use a backup wrench to prevent damage to the valve.

(with Accessory Thru-the-Curb Service Connections)

Fig. 16 — Gas Piping Guide

FACTORY OPTION THRU-BASE CONNECTIONS (GAS CONNECTIONS)

This service connection kit consists of a 1/2 in. electrical bulkhead connector and a 3/4 in. electrical bulkhead connector, connected to an “L” bracket covering the embossed (raised) section of the unit basepan in the condenser section (see Fig. 17 for shipping position).

The 3/4 in. bulkhead connector enables the low-voltage control wires to pass through the basepan. The 1/2 in. bulkhead connector allows the high-voltage power wires to pass through the basepan. See Fig. 18.

Page 15

between the “L” bracket and the connector plate

Brass Fitting

For Gas Piping

Support Bracket

Embossment

assembly).

NOTE: Take care not to damage the gasket, as it is reused in the following step.

3. Place the gasket over the embossed area in the basepan, aligning the holes in the gasket to the holes in the basepan. See Fig. 18.

4. Install the connector plate assembly to the basepan using 8 of the washer head screws.

The thru-base gas connector has male and female threads. The male threads protrude above the basepan of the unit; the female threads protrude below the basepan.

Check tightness of connector lock nuts before connecting gas piping.

Install a 1/2 in. NPT street elbow on the thru-base gas fitting. Attach a 1/2 in. pipe nipple with minimum length of 16 in. (406 mm) (field-supplied) to the street elbow and extend it through the access panel at the gas support bracket. See Fig. 19.

Fig. 17 — Thru-the-Base Fitting Assembly (Shown in

Shipping Position)

High Voltage Conduit Connector

Auxiliary Power Supply (Optional)

Brass Fitting for 3 to 6 Ton Units

Low Voltage Conduit Connector

Fig. 18 — Thru-Base Connection Fittings

To prepare the unit for thru-base connections:

1. Remove the “L” bracket assembly from the unit.

2. Remove connector plate assembly from the “L” bracket and discard the “L” bracket, but retain the washer head screws and the gasket (located

Fig. 19 — Gas Line Piping for 3 to 6 Ton Units

Other hardware required to complete the installation of the gas supply line includes a manual shutoff valve, a sediment trap (drip leg) and a ground-joint union. A pressure regulator valve may also be required (to convert gas pressure from pounds to inches of pressure). The manual shutoff valve must be located within 6 ft (1.83 m) of the unit. The union, located in the final leg entering the unit, must be located at least 9 in. (230 mm) away from the access panel to permit the panel to be removed for service. If a regulator valve is installed, it must be located a minimum of 4 ft (1220 mm) away from the unit’s flue outlet. Some municipal codes require that the manual shutoff valve be located upstream of the sediment trap. See Fig. 20 and 21 for typical piping arrangements for gas piping that has been routed through the sidewall of the curb. See Fig. 22 for typical piping arrangement when thru-base is used. Ensure that all piping does not block access to the unit’s main control box or limit the required working space in front of the control box.

Page 16

9 in. (229 mm) Minimum

Shut Off

Valve

Union

9 in. (229 mm) Minimum

Unit

Base

Rail

Burner Access Panel

Thru-Curb Adapter

Drip Leg

Thru-Curb Adapter

Shut Off

Valve

Drip Leg

Union

Unit

Base

Rail

Fig. 20 — Gas Piping, Typical Curb Sidewall Piping

(Example 1)

When installing the gas supply line, observe local codes pertaining to gas pipe installations. Refer to the NFPA 54/ANSI Z223.1 NFGC latest edition (in Canada, CAN/CSA B149.1). In the absence of local building codes, adhere to the following pertinent recommendations:

• Avoid low spots in long runs of pipe. Grade all pipe 1/4 in. per every 15 ft (7 mm per every 5 m) to prevent traps. Grade all horizontal runs downward to risers. Use risers to connect to heating section and to meter.

• 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 1/2 in., follow recommendations of national codes.

• Apply joint compound (pipe dope) sparingly and only to male threads of joint when making pipe 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

®1

) tape, ensure the material is Double Density type and is labeled for use on gas lines. Apply tape per manufacturer’s instructions.

• 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 main manual shutoff valve and slightly opening the ground-joint union.

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

Fig. 21 — Gas Piping, Typical Curb Sidewall Piping

(Example 2)

Fig. 22 — Gas Piping, Typical Thru-Base

Connections

WARNING

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

• Connect gas pipe to unit using a backup wrench to avoid damaging gas controls.

• Never purge a gas line into a combustion chamber.

• 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.

• Use proper length of pipe to avoid stress on gas control manifold.

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 orifice. A burr-free and squarely aligned orifice hole is essential for proper flame characteristics. See Fig. 23.

1. Third-party trademarks and logos are the property of their respective owners.

Page 17

Step 12 — Install External Condensate Trap and

Burner

Orifice

Standard Side Drain

Condensate Pan (Side View)

Drain Plug (Factory-Installed)

Alternate Bottom Drain

Minimum Pitch 1 in. (25 mm) Per 10 ft (3 m) of Line

To Roof Drain

Base Rail

Open Vent

3 in. (76 mm)

See Note

Roof Curb

Drain Plug

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

Min

Line

The unit has one 3/4 in. condensate drain connection on the end of the condensate pan and an alternate connection on the bottom. See Fig. 24. Unit airflow configuration does not determine which drain connection to use. Either drain connection can be used with vertical or horizontal applications.

When using the standard side drain connection, ensure the red plug in the alternate bottom connection is tight. Do this before setting the unit in place. The red drain pan can be tightened with a 1/2 in. square socket drive extension.

To use the alternate bottom drain connection, remove the red drain plug from the bottom connection (use a 1/2 in. square socket drive extension) and install it in the side drain connection.

The piping for the condensate drain and external trap can be completed after the unit is in place. See Fig. 25.

All units must have an external trap for condensate drainage. Install a trap at least 4 in. (102 mm) deep 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 per 3 m) of run. Do not use a pipe size smaller than the unit connection (3/4 in.).

Fig. 23 — Orifice Hole

Fig. 24 — Condensate Drain Pan (Side View)

Fig. 25 — Condensate Drain Pan Piping Details

Step 13 — Make Electrical Connections

WARNING

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.

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 outlet. If an always-energized convenience outlet operation is desired, connect the source leads to the line side of the unit-mounted 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 convenience outlet is desired, connect the source leads to the load side of the unit disconnect. On a unit without a unit-mounted disconnect, connect the source leads to compressor contactor C pressure lugs with unit field power leads. See Convenience Outlets on page 19 for power transformer connections.

The field power wires are connected to the unit at line-side pressure lugs on compressor contactor C (see wiring diagram label for control box component arrangement) or at factory-installed option non-fused disconnect switch. Maximum wire size is No. 2ga AWG (copper only) per pole on contactors and No. 2ga AWG (copper only) per pole on optional disconnect. See Fig. 26 and unit label diagram for field power wiring connections.

Page 18

NOTE: Unit may be equipped with short test leads (pig-

Units Without Non-Fused Disconnect Option

TB TB

11 12 11 12 1 3

Disconnect

per

NEC

208/230-1-60

L1 L2 L3

208/230-3-60

460-3-60 575-3-60

Units With Non-Fused Disconnect Option

Optional

Disconnect

Switch

Disconnect factory test leads; discard.

Factory Wiring

Disconnect

per

NEC

Copper

Wire Only

Electric

Disconnect

Switch

Aluminum

Wire

BLK

YEL

BLU

tails) on the field line connection points on contactor C or optional disconnect switch. These leads are for factoryrun test purposes only; remove and discard before connecting field power wires to unit connection points. Make field power connections directly to line connection pressure lugs only. See Fig. 27.

WARNING

FIRE HAZARD Failure to follow this warning could result in personal

injury, death, or property damage. Do not connect aluminum wire between disconnect

switch and unit. Use only copper wire.

Field-Install the NFD Shaft and Handle

1. Remove the Control Box access panel. The NFD

enclosure is located below the Control Box (see Fig. 28).

2. Remove 3 cap head screws that secure the NFD

enclosure front cover — 2 on the face of the cover and 1 on the left side cover. See Fig. 29.

3. Remove the front cover of the NFD enclosure.

4. Make sure the NFD shipped from the factory is at

OFF position (the arrow on the black handle knob is at OFF).

5. Insert the shaft with the cross pin on the top of the

shaft in the horizontal position. See Fig. 29.

6. Measure from the tip of the shaft to the top surface of

the black pointer; the measurement should be 3.75 to

3.88 in. (95 to 99 mm).

7. Tighten the locking screw to secure the shaft to the

NFD.

8. Turn the handle to the OFF position with red arrow

pointing at OFF.

9. Install the handle on to the painted cover horizontally

with the red arrow pointing to the left.

10. Secure the handle to the painted cover with 2 screws

and lock washers supplied.

11. Engaging the shaft into the handle socket, re-install

3 hex screws on the NFD enclosure.

12. Re-install the unit front panel.

Fig. 26 — Power Wiring Connections

Fig. 27 — Disconnect Switch and Unit

UNITS WITH FACTORY-INSTALLED NON-FUSED DISCONNECT

The factory-installed option non-fused disconnect (NFD) switch is located in a weatherproof enclosure located under the main control box. The manual switch handle and shaft are shipped in the disconnect enclosure. Assemble the shaft and handle to the switch at this point. Discard the factory test leads (see Fig. 26).

Connect field power supply conductors to LINE side terminals when the switch enclosure cover is removed to attach the handle.

Fig. 28 — NFD Enclosure Location

Fig. 29 — NFD Handle and Shaft Assembly

Page 19

UNITS WITHOUT FACTORY-INSTALLED NON-FUSED

MOTOR

DISCONNECT 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 cabinet 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.

ALL UNITS All field wiring must comply with NEC and all local codes.

Size wire based on MCA (Minimum Circuit Amps) on the unit informative plate. See Fig. 26 and the unit label diagram for power wiring connections to the unit power terminal blocks and equipment ground. Maximum wire size is No. 2ga AWG (copper only) per pole on contactors. See Fig. 26 and unit label diagram for field 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.

All units except 208/230-v units are factory 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 1/4 in. female spade connector from the 230-v connection and moving it to the 200-v 1/4 in. male terminal on the primary side of the transformer. Refer to unit label diagram for additional information. Field power wires will be connected at line-side pressure lugs on the power terminal block or at factory-installed option non-fused disconnect.

Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate. On 3-phase units, voltages between phases must be balanced within 2% and the current within 10%. Use the formula shown in the example below to determine the percent of voltage imbalance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any applicable unit 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.

Two types of convenience outlets are offered on RGV models: non-powered and unit-powered. Both types provide a 125-v GFCI (ground-fault circuit interrupter) duplex receptacle rated at 15A behind a hinged waterproof access cover, located on the end panel of the unit. See Fig. 30.

Figure 31 shows the Convenience Outlet Utilization label, which is located below the convenience outlet.

Convenience Outlet GFCI

PWD-CO Transformer

Fig. 30 — Convenience Outlet Location

PWD-CO Fuse Switch

% Voltage Imbalance

Example: Supply voltage is 230-3-60

Average Voltage =

Determine maximum deviation from average voltage.

(AB) 227-224 = 3-v

(BC) 231-227 = 4-v

(AC) 227-226 = 1-v

Maximum deviation is 4-v.

Determine percent of voltage imbalance.

% Voltage Imbalance = 100x

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

= 100 x

AB = 224-v BC = 231-v AC = 226-v

max voltage deviation from average voltage

(224 + 231 + 226)

average voltage

681

227

= 1.76%

= 227

Fig. 31 — Convenience Outlet Utilization

Notice Label

NOTE: Unit powered convenience outlets are not available as factory-installed options for single phase (-K voltage code models).

Installing Weatherproof 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 its depth; it must be installed at unit installation. For shipment, the convenience outlet is covered with a blank cover plate.

On units with electromechanical controls the weatherproof cover kit is shipped in the unit’s control box. The kit includes the hinged cover, a backing plate, and gasket.

Page 20

WARNING

Cover — While-In-Use

Weatherproof

Baseplate For

GFCI Receptacle

Gasket

GFCI Receptacle

Not Included

UNIT

VOLTAGE

CONNECT

PRIMARY

CONNECTIONS

TRANSFORMER

TERMINALS

208, 230 240

L1: RED + YEL L2: BLU + GRA

H1 + H3 H2 + H4

460 480

L1: RED Splice BLU + YEL L2: GRA

H2 + H3

575 600

L1: RED L2: GRA

H1 H2

ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal

injury or death. Using unit-mounted convenience outlets: Units with unit-

mounted 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 deenergization is confirmed. Observe National Electrical Code Article 210, Branch Circuits, for use of convenience outlets.

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

2. Loosen the 2 screws at the GFCI duplex outlet, until approximately 1/2 in. (13 mm) under screw heads is exposed. Press the gasket over the screw heads.

3. Slip the backing plate over the screw heads at the keyhole slots and align with the gasket; tighten the 2 screws until snug (do not over-tighten).

4. Mount the weatherproof cover to the backing plate as shown in Fig. 32.

5. Remove 2 slot fillers in the bottom of the cover to permit service tool cords to exit the cover.

6. Check for full closing and latching.

the unit-mounted non-fused disconnect switch; this will provide service power to the unit when the unit disconnect switch is open. Other connection methods will result in the convenience outlet circuit being de-energized when the unit disconnect switch is open. See Fig. 33.

Fig. 32 — Weatherproof Cover Installation

Non-Powered Convenience Outlet

This type requires the field installation of a general-purpose 125-v 15A circuit powered from a source elsewhere in the building. Observe national and local codes when selecting 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.

Unit-Powered Convenience Outlet

A unit-mounted transformer is factory-installed to step down 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 inside the control box and mounted on the vertical bracket; access is through the unit’s control box access panel. (See Fig. 30.)

The primary leads to the convenience outlet transformer are not factory-connected. Selection of primary power source is a customer option. If local codes permit, the transformer primary leads can be connected at the line-side terminals on

Fig. 33 — Powered Convenience Outlet Wiring

Fuse On Power Type

The factory fuse is a Bussmann

™1

Fusetron™1 T-15,

non-renewable screw-in (Edison base) type plug fuse. 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-mounted convenience outlet circuits will often require that 2 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 Code Article 210, Branch Circuits, for use of convenience outlets.

FACTORY-OPTION THRU-BASE CONNECTIONS (ELECTRICAL CONNECTIONS)

This service connection kit consists of a 1/2 in. NPT gas adapter fitting (brass), a 1/2 in. electrical bulkhead connector, and a 3/4 in. electrical bulkhead connector, all factoryinstalled in the embossed (raised) section of the unit basepan in the condenser section. The 3/4 in. bulkhead connector enables the low-voltage control wires to pass through the basepan. The 1/2 in. electrical bulkhead connector allows the high-voltage power wires to pass through the basepan. See Fig. 18 on page 15.

1. Third-party trademarks and logos are the property of their respective owners.

Page 21

NOTE: If electrical connections are not going to occur at this

HUM

O/B/Y2

T H E R M O S T A T

(Note 1) (Note 2)

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

Note 2: Y2 to Y2 connection required on single-stage cooling units when integrated economizer function is desired.

Field Wiring

Unit

Control

Board

Typical

Thermostat

Connections

time, tape or otherwise cover the fittings so that moisture does not get into the building or conduit in the interim.

Check tightness of connector lock nuts before connecting electrical conduits.

Field-supplied and field-installed liquid tight conduit connectors and conduit may be attached to the connectors on the basepan. Pull correctly rated high voltage and low voltage through appropriate conduits. Connect the power conduit to the internal disconnect (if unit is so equipped) or to the external disconnect (through unit side panel). A hole must be field cut in the main control box bottom on the left side so the 24-v control connections can be made. Connect the control power conduit to the unit control box at this hole.

UNITS WITHOUT THRU-BASE CONNECTIONS (ELECTRICAL CONNECTIONS)

1. Install power wiring conduit through side panel open-

2. Install power lines to terminal connections as shown

FIELD CONTROL WIRING The RGV unit requires an external temperature control de-

vice. This device can be a thermostat (field-supplied) or a thermostat emulation device provided as part of a third-party Building Management System.

All low-voltage wiring should be routed through the provided raceway built into the corner post of the unit or secured to the unit control box with the electrical conduit in order to provide UL-required clearance between high and low-voltage wiring.

THERMOSTAT Install a field-installed accessory thermostat according to in-

stallation instructions included with the accessory. For complete economizer function, select a 2-stage cooling thermostat. Locate the thermostat accessory on a solid wall in the conditioned space to sense average temperature in accordance with the thermostat installation instructions. Typical low-voltage connections are shown in Fig. 34.

If the thermostat contains a logic circuit requiring 24-v power, use a thermostat cable or equivalent single leads of different colors with minimum of 7 leads. If the thermostat does not require a 24-v source (no “C” connection required), use a thermostat cable or equivalent with minimum of 6 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 Gauge) insulated wire [95°F (35°C) minimum]. For 50 to 75 ft (15 to 23 m), use No. 16 AWG insulated wire [95°F (35°C) minimum]. For over 75 ft (23 m), use No. 14 AWG insulated wire [95°F (35°C) minimum]. Wire sizes larger than No. 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat.

ings. Install conduit between disconnect and control box.

in Fig. 26 on page 18.

Fig. 34 — Low-Voltage Thermostat Connections

Thermostat Wiring, Units Without Thru-Base Connection Kit

Pass the thermostat control wires through the hole provided in the corner post; then feed the wires through the raceway built into the corner post to the control box. Pull the wires over to the terminal strip on the upper-left corner of the Unit Control Board. See Fig. 35.

NOTE: If thru-the-bottom connections accessory is used, refer to the accessory installation instructions for information on routing power and control wiring.

Raceway

Hole In End Panel (Hidden)

Fig. 35 — Field Control Wiring Raceway

HEAT ANTICIPATOR SETTINGS Set heat anticipator settings at 0.14 amp for the first stage

and 0.14 amp for second-stage heating, when available.

Page 22

HOT GAS RE-HEAT CONTROL CONNECTIONS

O/W2/B

OAT RRS

S RTN

HUM

D1 D2

V+ Vg

HUM

Programmable

Thermostat

Unit Control Board

Thermostat Connections

Hot Gas Re-Heat Space RH Controller

NOTE: The Hot Gas Re-Heat system is a factory-installed option. The Hot Gas Re-Heat system is not available for single phase (-K voltage code) models.

The Hot Gas Re-Heat dehumidification system requires a field-supplied and field-installed space relative humidity control device. This device may be a separate humidistat control (contact closes on rise in space RH above control set point) or a combination thermostat-humidistat control device such as programmable thermostat device with isolated contact set for dehumidification control. The humidistat is normally used in applications where a temperature control is already provided (such as a third-party Building Management System).

Connecting a Field-Installed Humidistat

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. 35) to the 24-v barrier located on the left side of the control box. The raceway provides the UL-required clearance between high-voltage and low-voltage wiring.

3. Connect one of the leads from the 2-conductor cable to the HUM terminal on the UCB (Unit Control Board). Connect the other lead to the R terminal on the UCB. See Fig. 36.

Unit Control

Board

C HUM G

Humidistat

Thermostat

Y2 Y1

Fig. 36 — Humidistat Connections to UCB

Connecting at Field-Installed Thermidistat Device

1. Route the thermidistat multi-conductor thermostat cable (field-supplied) through the hole provided in the unit corner post.

3. The thermidistat has dry contacts at terminals D1 and D2 for dehumidification operation (see Fig. 37). Connect D1 to the R terminal on the UCB. Connect D2 to the HUM terminal on the UCB. Refer to the installation instructions included with the field-installed thermidistat device for more information.

TYPICAL UNIT WIRING DIAGRAMS See Fig. 38-41 for examples of typical unit control and pow-

er wiring diagrams. These wiring diagrams are mounted on the inside of the unit control box cover.

Fig. 37 — Typical Rooftop Unit with Hot Gas Re-Heat Dehumidification System

and Programmable Thermostat

Page 23

Fig. 38 — Typical RGV036-060 Control Wiring Diagram with Electromechanical and POL224,

208/230-3-60 Unit Shown

Page 24

Fig. 39 — Typical RGV072 Control Wiring Diagram with Electromechanical and POL224,

208/230-3-60 Unit Shown

Page 25

Fig. 40 — Typical RGV036-072 Power Wiring Diagram, 208/230-3-60 Unit Shown

Page 26

Fig. 41 — Typical RGV036-072 Power Wiring Diagram, 460-3-60 Unit Shown

Page 27

Integrated Gas Controller

Locking

Tab Connector

Overcurrent Fuse Protection

Redundant Gas Valve Relay

Locking

Tab Connector

Spade

Connect Ignitor

Status

LED

This unit contains an Integrated Gas Controller (IGC) board. The IGC control board uses a flue gas pressure switch that senses pressure drop in the heat exchanger due to the combustion inducer. See Fig. 42.

Flue Gas Pressure

Switch

Flue Gas Pressure

Sense Tube

Fig. 42 — Flue Gas Pressure Switch and Pressure

Sense Tube (Typical Location)

When the thermostat calls for heating, power is sent to W on the Integrated Gas Controller (IGC) board. An LED (light emitting diode) on the IGC board turns on and remains on during normal operation. A check is made to ensure that the rollout switch and limit switch are closed, and that the pressure switch is open. If the check was successful, the induced draft motor is energized. When the pressure in the heat exchanger is low enough to close the pressure switch, the ignition activation period begins. Once ignition occurs, the IGC board will continue to monitor the condition of the rollout switch, the limit switches, the pressure switch, and the flame sensor. Assuming the unit is controlled through a room thermostat set for “fan auto,” 45 seconds after ignition occurs, the indoor fan motor will energize, and the outdoor air dampers will open to their minimum position. If the “over temperature limit” opens prior to the start of the indoor fan blower, the IGC will shut down the burners, and the control will shorten the 45 second delay to 5 seconds less than the time to trip the limit. For example, if the limit trips at 37 seconds, the control will change the “fan on delay” from 45 seconds to 32 seconds. Once the “fan on delay” has been modified, it will not change back to 45 seconds unless power is reset to the control. On units with 2 stages of heat, W2 closes and initiates power to the second stage of the main gas valve when additional heat is required.

When the thermostat is satisfied, W1 and W2 open and the gas valve closes, interrupting the flow of gas to the main burners. 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 fan auto, the indoor fan motor will continue to operate for an additional 45 seconds and then stop. An LED indicator is provided on the IGC to monitor operation.

See Fig. 43 for IGC board component layout. Figure 44 is a typical IGC control wiring diagram and Table 7 for IGC Board LED Alarm Codes.

Fig. 43 — IGC Board Component Layout

Page 28

Fig. 44 — Typical IGC Control Wiring Diagram

UNIT CONTROL

BOARD

NOTE(S):

Table 7 — IGC Board LED Alarm Codes

a,b,c

LED FLASH

CODE

DESCRIPTION

ACTION TAKEN BY

CONTROL

RESET METHOD PROBABLE CAUSE

On Normal Operation — — —

Off Hardware Failure No gas heating.

1 Flash Indoor Fan On/Off Delay

Modified

5 seconds subtracted from On delay. 5 seconds added to Off

Power reset. High temperature limit switch opens during heat

—

delay (3 minute maximum)

2 Flashes Limit Switch Fault Gas valve and igniter Off.

Indoor fan and inducer On.

Limit switch closed, or heat call (W) Off.

3 Flashes Flame Sense Fault Indoor fan and inducer On. Flame sense normal.

Power reset for LED reset.

4 Flashes 4 Consecutive Limit

Switch Fault

5 Flashes Ignition Fault No gas heating. Heat call (W) Off.

6 Flashes Induced Draft Motor

Fault

No gas heating. Heat call (W) Off.

Power reset for LED reset.

If heat off: no gas heating. If heat on: gas valve Off and inducer On.

Inducer sense normal, or heat call (W) Off.

Loss of power to the IGC. Check 5 amp fuse on IGC, power to unit, 24-v circuit breaker, transformer, and wiring to the IGC.

exchanger warm-up period before fan-on delay expires. High temperature limit switch opens within 10 minutes of heat call (W) Off. See Limit Switch Fault.

High temperature limit switch is open. Check the operation of the indoor (evaporator) fan motor. Ensure that the supply-air temperature rise is within the range on the unit nameplate. Check wiring and limit switch operation.

The IGC sensed a flame when the gas valve should be closed. Check wiring, flame sensor, and gas valve operation.

4 consecutive limit switch faults within a single call for heat. See Limit Switch Fault.

Unit unsuccessfully attempted ignition for 15 minutes. Check igniter and flame sensor electrode spacing, gaps, etc. Check flame sense and igniter wiring. Check gas valve operation and gas supply.

Inducer sense On when heat call Off, or inducer sense Off when heat call On. Check wiring, voltage, and operation of IGC motor. Check speed sensor wiring to IGC.

7 Flashes Rollout Switch Lockout Gas valve and igniter Off.

Indoor fan and inducer On.

Power reset. Rollout switch has opened. Check gas valve

operation. Check induced-draft blower wheel is properly secured to motor shaft.

8 Flashes Internal Control Lockout No gas heating. Power reset. IGC has sensed internal hardware or software

error. If fault is not cleared by resetting 24-v power, replace the IGC.

9 Flashes Temporary Software

Lockout

No gas heating. 1 hour auto reset, or power

reset.

Electrical interference is disrupting the IGC software.

a There is a 3-second pause between alarm code displays. b If more than one alarm code exists, all applicable alarm codes will be displayed in numerical sequence. c Alarm codes on the IGC will be lost if power to the unit is interrupted.

LEGEND

IGC — Integrated Gas Unit Control LED — Light-Emitting Diode

Page 29

Hot Gas Re-Heat Dehumidification System (Optional)

Units with the factory-installed Hot Gas Re-Heat system option are capable of providing multiple modes of improved dehumidification as a variation of the normal cooling cycle. The Hot Gas Re-Heat system option includes additional valves in the liquid line and discharge line of the refrigerant circuit and a reheat coil downstream of the evaporator. Hot Gas Re-Heat system operation requires the installation and configuration of a relative humidity switch input or a space relative humidity sensor. These provide the dehumidification demand to the control.

With Hot Gas Re-Heat system units, there are two additional HVAC modes available for the user: Dehumidification and Dehum/Mech Cooling. Selection of the Dehum/Mech Cooling mode is determined by the dehumidification demand and the cooling demand. Table 8 shows the corresponding circuit mode and output status for the different demand combinations.

NORMAL COOLING This mode is the standard rated cooling system perfor-

mance, and occurs when there is cooling demand without dehumidification demand.

For RGV036-061 units, refrigerant flows through the outdoor condenser and is diverted away from the reheat coil with the open Cooling Liquid Valve (CLV) into the expansion device. Figure 45 shows the complete refrigerant flow. The Reheat Discharge Valve (RDV) is closed.

For RGV072 units, refrigerant flows through the outdoor condenser and is diverted away from the reheat coil with the closed Reheat Liquid Valve (RLV) and open CLV into the expansion device. Figure 46 shows the complete refrigerant flow. The RDV is closed.

DEHUM/MECH COOLING (SUBCOOLING) MODE This mode increases the latent heat removal and decreases

sensible cooling compared to normal cooling. This occurs when there is a cooling and dehumidification demands.

For RGV036-061 units, refrigerant flows through the outdoor condenser and is diverted through the reheat coil with the closed CLV into the expansion device. Figure 47 shows the complete refrigerant flow. The RDV is closed.

For RGV072 units, refrigerant flows through the outdoor condenser and is diverted through the reheat coil with the open RLV and closed CLV into the expansion device. Figure 48 shows the complete refrigerant flow. The RDV is closed.

DEHUMIDIFICATION (HOT GAS REHEAT) MODE This mode provides maximum latent cooling with little to no

sensible capacity. This occurs when there is a dehumidification demand and no cooling demand.

For RGV036-072 units, this is the same as the Subcooling mode but the RDV is open, which provides some compressor discharge gas to the reheat condenser to further increase the reheat of the evaporator air stream. (See Fig. 49 and 50.)

REHEAT CONTROL When there is only a cooling demand, the unit will operate

in normal cooling mode. When there is only dehumidification demand, the unit will operate in Dehumidification mode (Hot Gas Reheat). When there is both cooling demand and dehumidification demand, the unit will operate in Dehum/Mech Cooling mode (Subcooling). During Dehumidification and Dehum/Mech cooling mode, the unit will run all cooling stages.

Table 8 — Hot Gas Re-Heat System Control Modes

DEMAND AND MODE OUTPUTS

Dehumidification

Demand

No Power No Power No power Off

No No Off Off

No Yes COOL On

Yes No

Yes Yes DEHUM On

Cooling Demand Mode Compressor RDV CLV

DEHUM/MECH

COOL

De-energized

(no flow)

De-energized

(no flow)

De-energized

(no flow)

De-energized

(no flow)

Energized

(flow)

De-energized

(flow)

De-energized

(flow)

De-energized

(flow)

Energized

(no flow)

Energized

(no flow)

RLV

(RGV072 only)

De-energized

(flow)

Energized

(no flow)

Energized

(no flow)

De-energized

(flow)

De-energized

(flow)

Page 30

Hot Gas Reheat Coil

Compressor

Outdoor Air

Indoor

Supply Air

Indoor

Return Air

RLV

Valve

Expansion

Valve (TXV)

= Closed Valve = Open Valve

RDV

Valve

Evaporator Coil

Condenser Coil

CLV

Valve

RDV

Valve

Indoor

Leaving Air

Reheat Mode

Metering

Device (TXV)

Condenser Coil

Hot Gas Reheat Coil

Outdoor Air

CLV

Valve

Compressor

Evaporator Coil

= Closed Valve = Open Valve

Indoor

Entering Air

Fig. 45 — Normal Cooling Mode – Hot Gas Re-Heat System with Single Stage Cooling, RGV036-061

Fig. 46 — Normal Cooling Mode – Hot Gas Re-Heat System with 2 Stage Cooling, RGV072

Condenser Coil

Outdoor Air

Compressor

= Closed Valve = Open Valve

RDV

Valve

CLV

Valve

Indoor

Leaving Air

Hot Gas Reheat Coil

Evaporator Coil

Indoor

Entering Air

Reheat Mode

Metering

Device (TXV)

Fig. 47 — Subcooling Mode – Hot Gas Re-Heat System with Single Stage Cooling, RGV036-061

Page 31

RDV

Valve

CLV

Valve

Condenser Coil

Hot Gas Reheat Coil

Evaporator Coil

Compressor

Outdoor Air

Indoor

Leaving Air

Indoor

Entering Air

Reheat Mode

Metering

Device (TXV)

= Closed Valve = Open Valve

RDV

Valve

Indoor

Supply Air

Condenser Coil

Hot Gas Reheat Coil

RLV

Valve

Outdoor Air

CLV

Valve

Compressor

Expansion

Valve (TXV)

Evaporator Coil

= Closed Valve = Open Valve

Indoor

Return Air

Fig. 48 — Subcooling Mode – Hot Gas Re-Heat System with 2 Stage Cooling, RGV072

Fig. 49 — Hot Gas Reheat Mode – Hot Gas Re-Heat System with Single Stage Cooling, RGV036-061

RDV

Valve

Condenser Coil

RLV

Valve

Outdoor Air

CLV

Compressor

Valve

= Closed Valve = Open Valve

Fig. 50 — Hot Gas Reheat Mode – Hot Gas Re-Heat System with 2 Stage Cooling, RGV072

Indoor

Supply Air

Hot Gas Reheat Coil

Expansion

Valve (TXV)

Evaporator Coil

Indoor

Return Air

Page 32

EconomizerONE (Factory Option)

12 3

NOTE: QR codes in this image are for reference only.

NO. DESCRIPTION

1 USB port for Wi-Fi/WLAN stick. 2 QR code to download Climatix

™

mobile application.

One-line LCD. After a period of inactivity, the controller displays the default: HMI screen (free cooling status, 1FREECOOL YES or 1FREECOOL NO)

Operation button (Up button) - Move to the previous value, step or category.

Operation button (Down button) - Move to the next value, step or category.

Operation button (Enter button):

• Press to edit the current value or option.

• Press to confirm a newly selected value or option.

• Press Enter + Up to jump up one entire category.

• Press Enter + Down to jump down one entire category.

ECONOMIZER SETTINGS

Interface Overview

EconomizerONE This option consists of the following:

• Low Leak Economizer Assembly

• 1193547 OA (Outdoor Air) Dry Bulb Sensor

• 1193547 Mixed Air Sensor

• POL224 Controller

• 1203458 Harness POL224 Economizer Module Wiring The economizer controller used on electromechanical units

is a Siemens POL224, which is to be located in the RTU base unit’s control box. See Fig. 51 for button description of the POL224 controller. Refer to the unit dimensional drawing for the location of the control box access panel.

The POL224 controller provides the following:

1. One-line LCD (Liquid Crystal Display) — After a

period of inactivity, the controller displays the default HMI (Human Machine Interface) screen (free cooling status, 1FREE-COOL YES or 1FREE COOL NO). See Fig. 51-55.

2. Operation button (Up button) — Move to the previous

value, step, or category.

3. Operation button (Down Button) — Move to the next

value, step, or category.

4. Operation Button (Enter Button):

a. Press Enter to edit the current value or option. b. Press Enter to confirm a newly selected value or

option. c. Press Enter + Up to jump up one entire category. d. Press Enter + Down to jump down one entire

category.

User Interface and Keypad The controller user interface consists of an LCD display and

a 3-button keypad for input. The LCD is a 16 character by 1-line dot matrix display. The keypad is used to navigate and change the desired menu items on the display. See Fig. 51.

The Climatix commissioning, and servicing. Scanning a QR code on the controller allows users to download the mobile application on Android Wi-Fi/WLAN stick is needed. See Fig. 51 and 52. Plug Wi-Fi/WLAN stick into controller USB port for temporary connection for mobile application setup. The Wi-Fi/WLAN stick can be used for multiple units.

Menu Structure Menus are displayed in the economizer controller via

categories. There are eight first-level menus, each of which is represented by a number at the beginning of the line on the LCD. Pressing Enter + Up or Down can toggle between different first-level menus. Submenus follow the numbered first-level menus closely. Pressing Up or Down can toggle between different submenus.

At the end of the line, the LCD displays the value of the current submenu (if any). If the value is editable, pressing Enter will put the terminal in Edit mode. The value is then highlighted for change. After making a change by pressing Up or

1. Third-party trademarks and logos are the property of their respective owners.

™1

mobile application allows for installation,

™1

or Apple iOS®1, but a

Down, press Enter to confirm the change and exit the Edit mode. See Fig. 54.

Powering the Economizer Controller The POL224 controller power connections are made

through the economizer harness (P/N 1203458). Connections from the harness are made to the C (24 vac common) and R (24 vac power) terminals of the economizer controller. See Fig. 53.

LED Indication NOTE: If different faulty events occur at the same time, then

sensor/DAC LED lights up following the priority below: Red → Yellow → Off. For example, if there is a humidity sensor error and air temperature failure at the same time, then the sensor LED turns red rather than yellow. See Fig. 55 and Table 9.

IMPORTANT: After the Economizer controller enters the running state, it may take one minute for peripheral devices to complete initialization. Before that, LED indication might be unstable.

Fig. 51 — POL224 Controller

Page 33

NOTE: QR codes in this image are for reference only.

Power

No. Description

1 Number representing the first-level menu of Status Display. Different

numbers represent different menus:

1: Status Display 2: Basic Settings 3: Advanced Settings 4: Alarms 5: Enter Configuration State and Reset 6: I/O Config 7: Testing 8: Enter Running State

2 Submenu*

3 Value of the current submenu*

12 3

*See “Setup and Configuration” on page 42 for detailed submenus together with possible values or ranges.

NO. DESCRIPTION

1 Free Cooling LED 2 Sensor LED 3 DAC LED

123

Table 9 — LED Indication

Off

ShutOff SP OAT

LEGEND

OAT — Outside Air Temperature DB — Deadband SP — Set Point

Fig. 52 — Wi-Fi/WLAN Stick

Fig. 53 — Powering the EconomizerONE Controller

STATUS

Commissioning mode

Power start up Yellow On Yellow On Yellow On Free cooling is running Green On — — Free cooling is available

but not running Not economizing when it

should Economizing when it

should not Sensor working okay — Green On — Humidity sensor error —Yellow On— CO

sensor error —LED Off—

Air temperature fault/failure — Red On —

Excess outdoor air —

Damper working okay — — Green On Damper not modulating — — Red On

Damper slippage ——

Damper unplugged ——

Terminal ACT-FB is configured but no available feedback signal

FREE

COOLING

LED

Yellow

Blinking

Green

Blinking

Red Blinking — —

Red On — —

——LED Off

SENSOR

LED

Yellow

Blinking

——

Red

Blinking

DAC LED

Yellow

Blinking

—

Red

Blinking

Fast Red

Blinking

Functions

Free Cooling Economizing Free cooling uses unconditioned outside air to cool the

space directly. The economizer controller enables or disables free cooling after it judges which control mode is active. It also uses hysteresis to ensure a smooth switchover.

Depending on the sensors that are used, there are four different control modes. In different control modes, the assessed conditions are different. See Table 10.

Default Hysteresis Setting Hysteresis setting (DB) defaults to 2°F (–17°C). See Fig. 56.

Fig. 54 — Menu Structure Descriptions

Fig. 55 — LED Indication

Fig. 56 — Hysteresis Settings

Page 34

Table 10 — Free Cooling Functions

CONTROL MODE SENSORS USED ENABLE FREE COOLING?

Control Mode 1

• Fixed Dry bulb

Control Mode 2

• Differential Dry bulb (Dual Dry bulbs)

Control Mode 3

• Combination Fixed Enthalpy and Fixed Dry bulb Control

Control Mode 4

• Combination of Differential Enthalpy and Fixed Dry bulb

OA (outside air) temperature sensor and MA (Mixed Air) temperature sensor

OA temperature sensor, RA (Return Air) temperature sensor and MA temperature sensor

OA temperature and humidity sensor, and MA temperature sensor

OA temperature and humidity sensor, RA temperature and humidity sensor, and MA temperature sensor

The outside air dry bulb temperature is compared with the set temperature shutoff setpoint. If the outside air dry bulb temperature is below the temperature shutoff setpoint, then the outside air is used to meet all or part of the cooling demand.

The outside-air dry bulb temperature is compared with the return air dry bulb temperature. If both OAT and RAT are higher than the temperature high limitation, then free cooling is prohibited. If OAT or RAT is lower than the temperature high limitation and the outside air dry bulb temperature is lower than the return air dry-bulb temperature, then the outside air is used to meet all or part of the cooling demand.

The outside air dry bulb temperature and enthalpy are compared with the set temperature and enthalpy shutoff setpoints. If the outside air enthalpy is lower than the set enthalpy shutoff setpoint, and the outside air dry bulb temperature is lower than the temperature shutoff setpoint, then the outside air can be used for economizing.

The outside air dry bulb temperature and enthalpy are compared with the temperature shutoff setpoint and return air enthalpy. If both OA enthalpy and RA enthalpy are higher than the enthalpy high limitation, then free cooling is prohibited. If OA enthalpy or RA enthalpy is lower than the enthalpy high limitation, outside air enthalpy is lower than the return-air enthalpy, and the outside air dry bulb temperature is lower than the set temperature shutoff setpoint, then outside air can be used for economizing.

Damper Modulation During Free Cooling Once outside air is suitable for free cooling, the controller

modulates the damper based on MAT (mixed air temperature, default) or OAT (outside air temperature). Refer to Table 10.

If MAT is used when free cooling is enabled, MAT setpoint (3MAT SET, configurable in “Parameter Settings — Ad- vanced” on page 45) is used for MAT modulating. When MAT falls below the anti-freeze setpoint (3FRZ PROT), the damper either fully closes or opens to the minimum position (configurable in “Parameter Settings — Advanced” on page 45).

1. If MAT is lower than MAT setpoint, then the damper is modulated to maintain MAT setpoint, towards fully closed or open to the minimum position based on occupancy status if MAT continues dropping.

2. If MAT is in the range [MAT setpoint, (MAT setpoint + neutral zone band [1°F by default])], then the damper position does not change.

3. If MAT is higher than (MAT setpoint + neutral zone band), then the damper opens towards fully open.

4. If MAT is 10°F higher than MAT setpoint, then the damper fully opens to 100%.

If OAT is used when there is a cooling demand, the damper can be opened to different positions depending on different outside air temperatures:

1. If outside air is higher than 50°F but lower than the temperature shutoff setpoint, then the damper is fully open.

2. If outside air is higher than OAT lockout setpoint but lower than 50°F, then linear modulation is applied when only Cooling Stage 1 input (Y1I) is ON. Result

of the following formula indicates the damper’s open position:

([OAT - OAT Lockout Setpoint] / [50 - OAT Lockout Setpoint]) * (80% - MIN POS) + MIN POS

NOTE: When both free cooling and mechanical cooling are on, damper remains fully open regardless of the

modulating logic. Location-Based Shutoff Setpoints The economizer controller can get location-based tempera-

ture and enthalpy shutoff setpoints automatically if it is connected to the Climatix

™

mobile application. Once a Wi-Fi/WLAN stick is plugged in, the economizer controller can establish network connection with the mobile application. The temperature and enthalpy shutoff setpoints obtained via the phone or tablet’s GPS functionality can then be synchronized to the economizer controller.

Cooling Stage Operation The economizer controller accepts inputs for 1 and 2-stage

cooling inputs and reroutes to the RTU through the relay connection Y1 and Y2.

The operation of the cooling stages is determined by the availability of Free Cooling provided by the economizer operation mode. See Cooling Stage I/O Logic Tables 11-12. Based on the use of Free Cooling, the operating modes are as follows:

• Y1 is Stage 1 Cooling Demand.

• Y2 is Stage 2 Cooling Demand.

• Free Cooling is always the first cooling stage.

• Cooling Stage 1 call from the Commercial Thermostat (Y1) energizes the Y1 input to the economizer controller.

• Cooling Stage 2 call from the Commercial Thermostat (Y2) energizes the Y2 input to the economizer controller.

Page 35

Table 11 — 1 and 2-Stage Cooling Stage I/O Logic

NOTE(S):

ECONOMIZER

CONDITION MET

Y1 Y2

NO On On On On NO On Off On Off

NO Off Off Off Off YES On On On On/Off YES On Off Off Off YES Off Off Off Off

COOLING

STAGE 1

COOLING

STAGE 2

Table 14 — Different Fan Speeds with Different

Configured Outputs

FAN TYPE 1-SPEED COOLING

1-SPEED

FAN

2-SPEED

FAN

• Spd H (regardless of

cooling demand, OCC=Yes)

• Spd L (0 or 1 cooling demand)

• Spd H (2 cooling demands)

2-STAGE COOLING

• Spd H (regardless of cooling demand, OCC=Yes)

• Spd L (0 or 1 cooling demand)

• Spd H (2 cooling demands)

aIf OAT ≤ MAT setpoint (3MAT SET), then Relay 2 is always OFF to disable

Cooling Stage 2. Otherwise, if both stages of cooling (Y1 and Y2) are ON for more than a set time (15 minutes by default), Y2 remains ON, and the OAT is higher than MAT setpoint, then Relay 2 energizes to allow Y2 pass-through to enable Cooling Stage 2.

Table 12 — 2-Stage Cooling Stage I/O Logic

ECONOMIZER

CONDITION MET

Y1 Y2

COOLING

STAGE 1

NO On On On On NO On On On On NO On Off On Off

NO Off Off Off Off YES On On On On YES On On On On/Off YES On Off Off Off YES Off Off Off Off

COOLING

STAGE 2

IMPORTANT: The economizer controller can tolerate thermostat wiring mismatch, e.g. Thermostat Y1 → Economiz- er Y2-In, Thermostat Y2 → Economizer Y1-In. The handling logic is Stage =Y1I + Y2I. For example, Y1O =1 if Stage > =1, Y2O =1 if Stage > = 2.

Multi-Speed Fan Support The economizer controller supports connection to 2-speed

fans. When the unit is equipped with a multi-speed fan, the damper responds to multiple fan speeds via multiple minimum positions (MIN POS) to keep minimum airflow. See Tables 13-15.

Table 13 — Damper MIN POS for 2-Speed Fan

Y1 Y2

X——X — X — XX—— X — X

—— X— X — X

W1 OR

O/B

SPD L SPD H POS L POS H

a If a single-speed fan connects to the Controller, it opens directly on the call of

cooling/heating. The damper position is Pos H. b Configured by Y1O or Y2O. c Configured by 6FAN.

LEGEND

Spd L — Low Speed (Fan) Spd H — High Speed (Fan)

Table 15 — Different Damper Minimum Positions with

Different Configured Outputs

FAN TYPE 1-SPEED COOLING

1-SPEED

FAN

2-SPEED

FAN

a Configured by Y1O or Y2O. b Configured by 6FAN.

LEGEND

Pos L — Damper MIN POS for Low-Speed Fan Pos H — Damper MIN POS for High-Speed Fan

• Pos H (regardless of

cooling demand, OCC=Yes)

• Pos H (regardless of cooling demand, OCC=Yes)

2-STAGE COOLING

• Pos H (regardless of cooling demand, OCC=Yes)

• Pos L (0 or 1 cooling demand)

•Pos H (2 cooling demands)

If DCV (demand controlled ventilation) is enabled, each fan speed corresponds to two damper position ventilation setpoints (VENT MIN, VENT MAX), e.g., Pos L corresponds to 2VENTMIN L... 2VENTMAX L. See Table 16 for Different Damper Position Setting with Different Configured Outputs with DCV enabled.

If CO

sensor is connected but DCV is disabled, then each

fan speed corresponds to one minimum damper position ventilation setpoint. See Table 17 for Different Damper Position Setting with Different Configured Outputs with DCV disabled.

a A multi-speed fan is not controlled by the economizer controller but by an ex-

ternal logic board.

LEGEND

POS L — Damper MIN POS for Low-Speed Fan POS H — Damper MIN POS for High-Speed Fan SPD L — Low-Speed (Fan) SPD H — High-Speed (Fan)

Page 36

Table 16 — Different Damper Position Settings with Different Configured Outputs (DCV is Enabled)

NOTE(S):

FAN TYPE 1-STAGE COOLING

1-SPEED FAN

2-SPEED FAN

a Configured by Y1O or Y2O. b Configured by 6FAN.

• 2VENTMIN H to 2VENTMAX H (regardless of cooling demand, OCC=Yes)

• 2VENTMIN L to 2VENTMAXL (0 or 1 cooling demand)

• 2VENTMIN H to 2VENTMAX H (2 cooling demands)

2-STAGE COOLING

Table 17 — Different Damper Position Settings with Different Configured Outputs

(DCV is Disabled, CO2 sensor is connected)

FAN TYPE 1-STAGE COOLING

1-SPEED FAN

2-SPEED FAN

a Configured by Y1O or Y2O. b Configured by 6FAN.

• 2VENTMIN H (regardless of cooling demand, OCC=Yes)

Cooling Delay via Increasing Fan Speed If there is cooling demand while outside air is suitable for

economizing, then the economizer controller tries to increase fan speed to maximize the use of outside air first. If the cooling demand is not reached within a set time, then mechanical cooling will be enabled.

Typical field application:

1. Prerequisites:

• Outside air is suitable for economizing and free cooling is ON.

• Fan connected to the controller supports multiple speeds. Cooling delay function does not work if only a one-speed fan is connected to the controller.

2. If it is a 2-speed fan and there are two cooling demand inputs/outputs and Y1-Input is called, then the controller sets fan speed to Speed Low. Damper is fully open (100%).

If Y2-Input is also called, then the controller increases fan speed to Speed High and starts fan delay (2FAN DLY) time. After the delay time runs out, the controller starts Y1-Output.

Demand Controlled Ventilation (DCV) If a field-installed CO2 sensor is connected to the

EconomizerONE controller, then a demand controlled ventilation strategy will operate automatically. As the CO

level in

the space increases above the setpoint (on the EconomizerONE controller), the minimum position of the dampers will be increased proportionally until the Maximum Ventilation setting is reached. As the space CO

level de-

creases because of the increase in fresh air, the outdoor damper will follow the higher demand condition from the DCV mode or from the free cooling mode.

The controller modulates the outside air damper based on the CO

level through the ppm value selected between the

range of 500 and 2000 ppm. The measured CO2 concentration value is compared with the set DCV setpoint. If the measured CO

concentration value is below the DCV

setpoint, then keep the damper to the minimum position. Otherwise, enable DCV. Once DCV is enabled, the DCV PID starts to run to control the indoor CO

concentration

value towards the DCV setpoint. The damper opens to the maximum position.

• 2VENTMIN H (regardless of cooling demand, OCC=Yes)

• 2VENTMIN L (0 or 1 cooling demand)

• 2VENTMIN H (2 cooling demands)

2-STAGE COOLING

NOTE: DCV is disabled if the controller receives no occupancy signal.

DCV operation is available in Occupied and Unoccupied periods with the EconomizerONE system. However, a control modification will be required on the unit system to implement the Unoccupied period function. Refer to controller accessory installation instruction manual for further controls and command operation information.

High Humidity Limitation The economizer controller applies high limit of humidity to

enthalpy-based economizing. When the OA dew point is below the dew point setpoint, enthalpy-based economizing is available. Otherwise, enthalpy-based economizing is unavailable.

Anti-Freeze Protection The economizer controller initiates the anti-freeze protection

if MAT or OAT temperature falls below the anti-freeze setpoint.

MAT-Based Anti-Freeze Protection

1. If MAT temperature falls below the anti-freeze setpoint (3FRZ PROT), then:

• The controller closes both damper and compressor if unit type is conventional unit and cooling/heating conventional operation mode is enabled.

• The controller closes the damper if unit type is heat pump and heat pump operation mode is enabled.

2. If the MAT sensor fails, MAT is substituted by OAT to continue the anti-freeze assessment. If OAT fails too, the controller closes the damper immediately.

OAT-Based Anti-Freeze Protection If OAT temperature falls below the OAT lockout setpoint

(3OAT LOCK):

1. The controller stops the compressor from running if unit type is conventional unit and cooling/heating conventional operation mode is enabled.

2. The controller compressor is bypassed if unit type is heat pump and heat pump operation mode is enabled.

Page 37

Exhaust Fan Operation Up to two exhaust fans can be connected to the econo-

mizer controller.

• If Exhaust Fan 1 is connected and configured, then Exhaust Fan 1 parameter group (L, M and H) is available, depending on fan configuration.

• If Exhaust Fan 2 is connected and configured, then Exhaust Fan 2 parameter group (L, M and H) is available, depending on fan configuration.

• The controller energizes Exhaust Fan Relay 1 and Exhaust Fan Relay 2 if the damper position reaches Exhaust Fan 1 parameter setting and Exhaust Fan Relay 2 parameter setting respectively. The selection of L, M, or H matches the current fan speed.

NOTE: If terminal ACT-FB is configured, then the damper position is the damper feedback position. If feedback signal is unavailable, it is the simulated position.

Occupancy Input The economizer controller can receive an occupancy sig-

nal from the connected thermostat or work under Occupied mode all the time. This is configurable in the Thermostat setup from the Climatix

™

mobile application or under the I/O Configuration menu on the inbuilt display. See “Parameter Settings — I/O Configurations” on page 45 for more information.

IMPORTANT: On the call of cooling, when the controller is configured to receive signal from the thermostat but the thermostat is working under the Unoccupied mode, the damper is fully closed if outside air is not suitable for economizing. If outside air is suitable for economizing, the damper is fully open.

Pre-occupancy Purge The pre-occupancy purge demand comes from the configu-

ration of the Auxiliary features in the Climatix

™

mobile application or 6AUX2-I under the I/O Configuration menu on the inbuilt display.

During pre-occupancy purge on the call of heating or when there is no cooling/heating demand, the damper position is MIN POS.

During pre-occupancy purge on the call of cooling, the damper position is MIN POS if outside air is not suitable for economizing. If outside air is suitable for economizing, then the damper is fully open.

Airflow Commissioning Airflow measurement station (differential pressure signal)

can connect to the controller temporarily to run airflow commissioning to calculate, calibrate, and store 4 fan speed characteristic curves automatically at damper positions 40%, 60%, 80%, and 100%. The controller places the damper to a proper position to meet minimum or any other

airflow requests in cfm. Users can enable this function only from the Climatix

™

mobile application if the related function

is available in the current mobile application version. Fault Detection and Diagnostics The economizer controller can detect and diagnose free

cooling faults, sensor operation faults, and damper modulating faults. It can also report anti-freeze and shutdown notifications and actuator errors. Following is a list of all detectable or reportable information:

• Sensor disconnected or has no signal.

• Sensor short or high signal (under range or over range).

• Not economizing.

• Unexpected economizing.

• Excess outdoor air.

• Damper not modulating.

• Input power monitor and brownout. After detecting brownout, the economizer controller enters the brownout protection mode and disables all of the relay outputs.

• Anti-freeze notifications.

• Shutdown notifications.

• Actuator errors.

• Too low or too high leaving air temperature.

• Cooling/heating error.

• Damper actuator cycle count. Parameter 1ACT CNT indicates number of times actuator has cycled. It is resettable via HMI item 8ACT CNT RESET.

IMPORTANT: The first 6 faults are detectable via LEDs or alarm reports on the LCD. See LED Indication on page 33 and Alarms on page 46 for fault indications. These faults can also be displayed in the Operating section of the

Climatix

™

mobile application.

Firmware Update NOTE: Back up configurations before firmware update. All

the previous configuration data are erased after firmware update. NOTE: Contact Application Engineering for more information on support for firmware.

IMPORTANT: If the controller enters the configuration state for the convenience of I/O configurations, then users can manually switch to the running state after finishing configurations. To do so, press Enter + Up at the same time, and then press Enter to confirm the switch after 8RUN STATE appears on the LCD.

Page 38

WIRING

WARNING

Failure to follow this caution may result in damage to equipment. Be sure to allow enough time for compressor startup and shutdown between checkout tests so that the compressors do not short-cycle.

Mounting Devices Connected to the Economizer Controller

Devices like damper actuators, sensors (temperature sensor, humidity sensor, combination temperature and humidity sensor, CO fans can be connected to the economizer controller. For information on how to mount the devices, see the device’s installation instructions. See Fig. 57 and Table 18 for economizer controller wiring details.

sensor), thermostats, and exhaust

Fig. 57 — EconomizerONE Control Wiring

Page 39

Table 18 — EconomizerONE Control Wiring Settings

NO. LABEL TYPE DESCRIPTION

1 + RS485 Modbus A Line A 2 - RS485 Modbus B Line B 3 ¬ GND_ISO Earth Ground 4 MAT Type II NTC 10K or 0-10 vdc Mixed or Discharge Air Temperature Sensor 5 COM COM Mixed or Discharge Air Temperature Sensor Common 6 OAT Type II NTC 10K or 0-10 vdc Outside Air Temperature Sensor 7 OAH 0-10 vdc or 4-20mA Outside Air Relative Humidity Sensor

8 COM COM

9 AUX-AI 0-10 vdc, 2-10 vdc or 0-5 vdc Air Quality Sensor or Pressure Sensor 10 RAT Type II NTC 10K or 0-10 vdc Return Air Temperature Sensor 11 RAH 0-10 vdc or 4-20mA Return Air Relative Humidity Sensor 12 S-COM COM 24 vac Common 13 S-24V 24 vac 24 vac Power Out to Sensors 14 ACT-FB 2-10 vdc Damper Actuator Feedback 15 ACT2-10 2-10 vdc Damper Actuator Output 16 ACT-COM COM Damper Actuator Output Common 17 ACT-24V 24 vac 24 vac Power Out to Damper Actuator

18 AUX2-O 24 vac OUT

19 COM COM 24 vac Common

20 AUX2-I 24 vac IN

21 AUX1-O 24 vac OUT

22 COM COM 24 vac Common

23 AUX1-I 24 vac IN

24 OCC 24 vac IN Occupancy Input 25 Y2O 24 vac OUT Cooling Stage 2 Output to Stage 2 Mechanical Cooling 26 Y2I 24 vac IN Cooling Stage 2 Input from Commercial Thermostat 27 Y1O 24 vac OUT Cooling Stage 1 Output to Stage 1 Mechanical Cooling 28 Y1I 24 vac IN Cooling Stage 1 Input from Commercial Thermostat 29 C COM 24 vac Common 30 R 24 vac 24 vac Power

Outside Air Temperature Sensor or Outside Air Relative Humidity Sensor Common

Configurable:

• Exhaust Fan (1 or 2)

• System Alarm output (Title 24)

Configurable:

• Shut Down

• Heat Conventional (W1)

• Heat Pump Changeover (reversing valve OB)

• Pre-occupancy Configurable:

• Exhaust Fan (1 or 2)

• System Alarm output (Title 24)

Configurable:

• Shut Down

• Heat Conventional (W1)

• Heat Pump Changeover (reversing valve OB)

• Pre-occupancy

Page 40

Connecting Peripheral Devices to the Economizer

•

Outside Air:

Connect to the OAT and COM terminals of the device.

•

Return Air

(Differential):

and S-COM terminals of the device.

•

Mixed Air: Connect

to the MAT and COM terminals of the device.

Mixed or Discharge Air Temperature Sensor

Outside Air Temperature Sensor

Return Air Temperature Sensor

Outside Air

Relative Humidity: Connect to the OAH and COM terminals of the device.

Return Air Relative

Humidity: Connect to the RAH and S-COM terminals of the device.

•

Outside Air Relative Humidity Sensor

Return Air Relative Humidity Sensor

Controller

See Fig. 58-62 for wiring details.

Connect to the RAT

Fig. 58 — Temperature Sensor Connection

Fig. 59 — Relative Humidity Sensor Connection

Page 41

Fig. 60 — Combination Temperature/Humidity Sensor Connection

Outside

Combination Temperature/ Humidity: Connect to the OAT, COM, and OAH terminals of the device.

Return

Combination Temperature/ Humidity: Connect to the RAT, S-COM, and RAH terminals of the device.

•

Combo Temperature and Humidity Sensor

Connect to the

AUX-AI, S-COM, and S-24V terminals of the device.

•

Air Quality Sensor or Pressure Sensor

Connect to the

ACT 2-10, ACT-COM, and ACT-24V terminals of the device.

•

Damper Actuator: Power and 2-10 Vdc

Fig. 61 — CO

Fig. 62 — Damper Actuator Connection

/Pressure Sensor Connection

Page 42

SETUP AND CONFIGURATION

NOTE(S):

IMPORTANT: Before setup and configuration, it is recommended to obtain some location-based values, such as shutoff points, or utilize the location services in the Climatix

™

mobile application.

Set up and configure the economizer controller before putting it into usage. This can be accomplished by using the Climatix

™

mobile application or the inbuilt display. After sensor, compressor, thermostat, or actuator is connected to the economizer controller, values/statuses are displayed in the Operating section of the mobile application and on the LCD. Users can manually change basic and advanced settings, configure I/Os, and test the damper operation and any configured outputs by modifying the corresponding parameter values in the local device or mobile application. See Tables 19-26 for complete list of all parameters available on the LCD display. Refer to it during the setup and configuration process.

NOTE: For all units, the Climatix application login is: Administrator. For units coming from the factory with CO configuration or single enthalpy (control mode 3), the

controller password is OneBT2.1. For all other units, use the controller password OneBT.

NOTE: Parameters and display menus may display differently/dynamically if different applications are configured. See Tables 19-26.

IMPORTANT: Not all operations are available on the local POL224. For example, users can only obtain shutoff setpoints and perform cfm commissioning via the Climatix

™

mobile application. Setup and configuration on the local device are only recommended if operations from the mobile application are unavailable. Check the mobile application for all operations that can be performed from the mobile application end.

IMPORTANT: By connecting the RS485 port to a PC, all parameters are also readable or writable from PC tools such as Modbus Poll.exe via Modbus BACnet™

MSTP (Bps 38400 [default], Bps 9600, Bps

®a

and Yabe.exe via

19200, Bps 115200). Note that an external End of Line (EOL) element is required to achieve Baud Rate 115200 at

a maximum cable length of 4000 ft (1.2 km).

a Third-party trademarks and logos are the property of their respective owners.

Page 43

Table 19 — Status Display

PARAMETER DESCRIPTION VALUE

1FREECOOL Indicates whether the system can use outdoor air for free cooling. 1ECON ENAB Indicates whether outdoor air is being used for the first stage of cooling.

Indicates whether the space is occupied. If users choose ALWAYS for 6OCC when

1OCCUPIED

configuring I/Os, then the parameter value is YES; if users keep the default selection T-STAT for 6OCC and the controller receives 24-v signal from OCC input, then the value is

YES. Otherwise, the value is NO. 1Y1-IN Y1-In call from thermostat for Cooling Stage 1. 1Y1-OUT Y1-Out signal to compressor for Cooling Stage 1. 1Y2-IN Y2-In call from thermostat for Cooling Stage 2.

1Y2-OUT

1AUX1-I

1AUX1-O

1AUX2-I

1AUX2-O

Y2-Out signal to compressor for Cooling Stage 2.

Dynamic item: Appears only if Y2-Out terminal is configured.

Aux1-In signal

Dynamic item: Appears only if Aux1-In terminal is configured.

Aux1-Out signal

Dynamic item: Appears only if Aux1-Out terminal is configured.

Aux2-In signal

Dynamic item: Appears only if Aux2-In terminal is configured.

Aux2-Out signal

Dynamic item: Appears only if Aux2-Out terminal is configured.

1COMP STAGE Indicates compressor current stage.

1HEAT ENAB Indicates whether heating is enabled.

1MIX AIR LOW

Indicates whether the anti-freeze protection function is enabled for a mixed air temperature

sensor. If the detected air temperature is lower than the anti-freeze protection setpoint

(3FRZ PROT), then the parameter value is YES. Otherwise, it is NO.

Indicates the present value of the mixed air temperature (MAT) sensor.

1MAT PRES

1LAT PRES

1OAT PRES

1OAH PRES

1RAT PRES

1RAH PRES

1CO2 PRES

Dynamic item: Appears only if MAT or AUTO is selected for

3DIF T LOC under Parameter Settings — Advanced on page 45.

Indicates the present value of the leaving air temperature (LAT) sensor.

Dynamic item: Appears only if LAT or AUTO is selected for 3DIF T LOC.

Indicates the present value of the outdoor air temperature (OAT) sensor.

Dynamic item: Appears only if an OAT sensor is configured.

Indicates the present value of the outdoor air relative humidity (OAH) sensor.

Dynamic item: Appears only if an OAH sensor is configured.

Indicates the present value of the return air temperature (RAT) sensor.

Dynamic item: Appears only if a RAT sensor is configured.

Indicates the present value of the return air relative humidity (RAH) sensor.

Dynamic item: Appears only if a RAH sensor is configured.

Indicates the present value of the CO

Dynamic item: Appears only if a CO2 sensor is configured.

sensor.

The corresponding detected

value is displayed on the LCD.

Indicates the demand controlled ventilation (DCV) status.

1DCV STATUS

1FAN SPD LV

Dynamic item: Appears only if a CO

Displays ON if the measured CO2 concentration value is above the DCV setpoint and OFF

if below the DCV setpoint.

Indicates the current fan speed status (low, medium, or high). If a one-speed fan is

connected and configured, then this item is invisible.

Dynamic item: Appears only if “6FAN” is configured as “2SPEED” under Parameter

sensor is configured.

Settings — I/O Configurations on page 45.

1ACT OUT Indicates current position of damper actuator in V. 1ACT FB Indicates feedback signal of damper actuator in V. 1ACT POS Indicates current position of damper actuator in % Open.

1ACT CNT

Indicates number of times actuator has cycled (1 cycle = 180 degrees of movement in any

direction). Resettable via HMI item 8ACT CNT RESET under Enter Running State on

The corresponding detected

value is displayed on the LCD.

page 47.

1EQUIP

Indicates the equipment type. If HP(O) or HP(B) is chosen for 6AUX1-I, then the parameter

value is HP(O) or HP(B) respectively. If neither is chosen, then the value is CON RTU.

1OAT LOCK Indicates status of the OAT cooling lockout function.

1INS

Indicates the installation date of the economizer controller. If the installation date is

incorrect, press Enter to change and confirm month, date, and year.

YES

OFF

Off

1 2 3

YES

OFF

HP(O) HP(B)

CON RTU

LCKOUT

OVRD

—

Page 44

Table 20 — Parameter Settings — Basic

PARAMETER DESCRIPTION RANGE DEFAULT

Temperature shutoff setpoint can be obtained automatically if a smartphone

2 TEMP OFF

or tablet with the mobile application installed on it is connected to the network provided by a Wi-Fi/WLAN stick plugged into the economizer controller. This can also be a manually defined setpoint.

Enthalpy shutoff setpoint can be obtained automatically if a smartphone or

2ENTH OFF

tablet with the mobile application installed on it is connected to the network provided by a Wi-Fi/WLAN stick plugged into the economizer controller. This can also be a manually defined setpoint. Dynamic item: Appears only if an OAH sensor is configured.

Demand controlled ventilation setpoint can be obtained automatically if a

2DVC

2FAN L ACT

2FAN H ACT

2VENTMAX L

2VENTMAX H

2VENTMIN L

2VENTMIN H

CFM COMM

smartphone or tablet with the mobile application installed on it is connected to the network provided by a Wi-Fi/WLAN stick plugged into the economizer controller. This can also be a manually defined setpoint. Dynamic item: Appears only if a CO

Damper minimum position when fan runs at a low speed. Dynamic item: Appears only if “6FAN” is configured as “2SPEED” under Parameter Settings — I/O Configurations on page 45.

Damper minimum position when fan runs at a high speed. Dynamic item: Appears only if “6FAN” is configured as “1SPEED” or “2SPEED”.

DCV maximum position when fan runs at a low speed. Dynamic item: Appears only if a CO configured as “2SPEED”.

DCV maximum position when fan runs at a high speed. Dynamic item: Appears only if a CO configured as “1SPEED” or “2SPEED”.

DCV minimum position when fan runs at a low speed. Dynamic item: Appears only if a CO configured as “2SPEED”.

DCV minimum position when fan runs at a high speed. Dynamic item: Appears only if a CO configured as “1SPEED” or “2SPEED”.

Air Flow Chart: CFM commissioning can only be initiated from the mobile application. When CFM commissioning is in progress, the local device

sensor is configured.

sensor is configured and “6FAN” is

reads “CFM COMM”.

2DEGREES Temperature unit (°F or °C). — °F

2FAN Fan cfm.

Exhaust Fan 1 low-speed parameter setting.

2EX1 L

Dynamic item: Appears only if:

• Exhaust Fan 1 is configured.

•“6FAN” is configured as “2SPEED”. Exhaust Fan 1 high-speed parameter setting.

2EX1 H

2EX2 L

Dynamic item: Appears only if:

• Exhaust Fan 1 is configured.

•“6FAN” is configured as “1SPEED” or “2SPEED”. Exhaust Fan 2 low-speed parameter setting.

Dynamic item: Appears only if:

• Exhaust Fan 2 is configured.

•“6FAN” is configured as “2SPEED”. Exhaust Fan 2 high-speed parameter setting.

2EX2 H

2THL

2EHL

Dynamic item: Appears only if:

• Exhaust Fan 2 is configured.

•“6FAN” is configured as “1SPEED” or “2SPEED”. Temperature high limitation.

Dynamic item: Appears only if an RAT sensor is configured. Enthalpy high limitation.

Dynamic item: Appears only if an RAH sensor is configured.

2FAN DLY Cooling delay via increasing fan speed. 0...30 min; increment by 1 5 min.

48...80°F; increment by 1 63°F

22...30 Btu/lbm; increment by 1 28 Btu/lbm

300...2000PPM;

increment by 100

1100PPM

2...10V; increment by 0.1 3.6V

2...10V; increment by 0.1 2.8V

2...10V; increment by 0.1 3.6V

2...10V; increment by 0.1 3.1V

2...10V; increment by 0.1 2.3V

——

100...50,000cfm;

increment by 100

5000cfm

0...100%; increment by 1 65%

0...100%; increment by 1 50%

0...100% 80%

0...100%; increment by 1 75%

0...100%; increment by 1 83%

30...50 Btu/lbm; increment by 1 33 Btu/lbm

Page 45

Table 21 — Parameter Settings — Advanced

PARAMETER DESCRIPTION VALUE/RANGE DEFAULT

3FREEZE POS Anti-freeze protection damper position (closed or minimum).

3SD ACT POS Damper position during shutdown (open or closed).

MAT sensor location:

3DIF T LOC

3LAT LOW

3LAT HIGH

3OAT CAL OAT sensor calibration. –2.5...2.5°F; increment by 0.5 0°F

3RAT CAL

3OAH CAL

3RAH CAL

3MAT CAL MAT or LAT sensor calibration. –2.5...2.5°F; increment by 0.5 0°F 3MAT SET Setpoint of MAT or LAT sensor. 38...70°F; increment by 1 53°F 3FRZ PROT Anti-freeze protection setpoint of MAT sensor. 35...55°F; increment by 1 45°F

3ACT TOLR

3OAT LOCK OAT lockout set point for anti-freeze protection. –45...80°F; increment by 1 32°F

3OAT LCKOVRD

3OAT LOCKODLY Indicates the overridden time if “YES” is selected for “3OAT LCKOVRD”. 0...300 min; increment by 1 45 min.

• Choose MAT if the sensor is installed before the DX (Direct Expansion) coil.

• Choose LAT if the sensor is installed after the DX coil.

• Choose AUTO to let the economizer controller automatically detect the location. Low limit of leaving air temperature.

Dynamic item: Appears only if LAT or AUTO is selected for 3DIF T LOC. High limit of leaving air temperature.

Dynamic item: Appears only if LAT or AUTO is selected for 3DIF T LOC.

RAT sensor calibration. Dynamic item: Appears only if an RAT sensor is configured.

OAH sensor calibration. Dynamic item: Appears only if an OAH sensor is configured.

RAH sensor calibration. Dynamic item: Appears only if an RAH sensor is configured.

Actuator tolerance setpoint between output (in percent) and feedback (in percent).

When OAT LOCKOUT is enabled, choose to override the cooling lockout function or not.

35...65°F; increment by 1 45°F

70...180°F; increment by 1 80°F

–2.5...2.5°F; increment by 0.5 —

–10...10%; increment by 0.5 0%

0...15%; increment by 1 8%

CLO

MIN

CLO OPN

MAT

LAT

AUTO

YES

CLO

LAT

Table 22 — Parameter Settings — I/O Configurations

PARAMETER DESCRIPTION VALUE DEFAULT

6OCC

6AUX1-I

6AUX2-I

6OAT SIG Configures signal type of OAT sensor.

6RAT SIG Configures signal type of RAT sensor.

6OAH SIG Configures signal type of OAH sensor. 0-10V

6RAH SIG Configures signal type of RAH sensor.

6MAT SIG Configures signal type of MAT or LAT sensor.

6AUX-AI1

6X-AI1 SIG

6CO2 Rng L

6C02 Rng H

6AUX-AI2

Configures whether occupancy status receives signal from the connected thermostat or is displayed as ALWAYS in the economizer controller.

Auxiliary DI-1. Configurable as:

• None

• Heat Conventional (W1) from thermostat

• Heat pump (reversing valve O)

• Heat pump (reversing valve B)

• Pre-occupancy signal from thermostat

• Shutdown signal from unit Auxiliary DI-2. Configurable as:

• None

• Heat stage 1 (W1) from thermostat

• Heat pump (reversing valve O)

• Heat pump (reversing valve B)

• Pre-occupancy signal from thermostat

• Shutdown signal from unit NOTE: Whichever is chosen for 6AUX1-I does not appear in the list of 6AUX2-I.

Auxiliary AI-1. Configurable as:

•CO

sensor

• Static pressure (temporarily for cfm commissioning) sensor

• None

Configures CO2 sensor type. Dynamic item: Appears only if “CO2” is selected for “6AUX-AI1”.

Configures the low limit of CO2 measuring range. Dynamic item: Appears only if “CO2” is selected for “6AUX-AI1”.

Configures the high limit of CO2 measuring range. Dynamic item: Appears only if “CO2” is selected for “6AUX-AI1”.

Choose ACT FB if feedback signal is available from the connected damper actuator. Otherwise, choose NONE.

T-STAT

ALWAYS

NONE HP(O) HP(B)

PREOCC

SHUTDWN

NONE

W1 HP(O) HP(B)

PREOCC

SHUTDWN

0-10V

NTC10K

0-10V

NTC10K

NONE

4-20mA

NONE

0-10V

NTC10K

PRESSURE

CO2

NONE

0-10V 2-10V

0-5V

0...500; increment by 10 0

1000...3000;

increment by 50

ACT FB

NONE

T-STAT

NONE

NTC10K

NONE

NTC10K

NONE

0-10V

2000

ACT FB

Page 46

NOTE(S):

Table 22 — Parameter Settings — I/O Configurations (cont)

PARAMETER DESCRIPTION VALUE DEFAULT

6Y2O

6AUX1-O

6AUX2-O

6RS485 Switch between MSTP and Modbus.

Choose “COOL 2” if Cooling Stage 2 is available (another compressor is connected to the Economizer). Otherwise, choose “NONE”.

Auxiliary DO-1. Configurable as:

• None.

• Exhaust fan (1 or 2).

• Alarm output to thermostat (Title 24). Auxiliary DO-2. Configurable as:

• None.

• Exhaust fan (1 or 2).

• Alarm output to thermostat (Title 24). NOTE: Except for Exhaust Fan, whichever is chosen for 6AUX1-O does not appear in the list of 6AUX2-O.

COOL 2

NONE

ALARM

EXHAUST

NONE

ALARM

EXHAUST

MSTP

MODBUSSLV

COOL 2

EXHAUST

ALARM

MSTP

Table 23 — Alarm Parameters

PARAMETER DESCRIPTION

NO ALARM No alarm is activated. 4MAT SEN ALARM MAT sensor has failed, gone out of range, or become disconnected. 4CO2 SEN ALARM CO 4OAT SEN ALARM OAT sensor has failed, gone out of range, or become disconnected. 4OAH SEN ALARM OAH sensor has failed, gone out of range, or become disconnected. 4RAT SEN ALARM RAT sensor has failed, gone out of range, or become disconnected. 4RAH SEN ALARM RAH sensor has failed, gone out of range, or become disconnected. 4FREEZE ALARM Anti-freeze notification when MAT sensor is below anti-freeze protection setpoint. 4RTU SHUTDOWN Notification of Shutdown Active when SHUTDWN is chosen for 6AUX1-I or 6AUX2-I. 4ACTUATOR ALARM Actuator gets disconnected or has failed. 4ACT UNDER V Voltage received by the actuator is below expected range. 4ACT OVER V Voltage received by the actuator is above expected range. 4ACT STALLED Damper actuator stopped before achieving commanded position. 4ACT SLIPPING Damper actuator slips after reaching commanded position. 4NOT ECON Not economizing when it should. 4ECON SHOULDNT Economizing when it should not. 4EXCESS OA Excess outdoor air. Outside air intake is significantly higher than it should be. 4LLA ALARM Leaving air temperature is lower than the low limit (3LAT LOW). 4HLA ALARM Leaving air temperature is higher than the high limit (3LAT HIGH).

a All alarms are dynamic items. An alarm appears only if a related symptom mentioned above is detected. b An alarm activation triggers a general alarm and then the configured system alarm output (AUX1-O or AUX2-O) is activated. If there is no alarm, then NO ALARM is

displayed on the HMI.

sensor has failed, gone out of range, or become disconnected.

a,b

Table 24 — Test Commands

PARAMETER DESCRIPTION

7DAMPER MIN POS Press Enter to test whether the economizer controller can drive damper to minimum position. 7DAMPER CLOSE Press Enter to test whether the economizer controller can drive damper to 100% Closed. 7DAMPER OPEN Press Enter to test whether the economizer controller can drive damper to 100% Open. 7DAMPER ALL Press Enter to perform all the above tests. 7DAMPER Press Enter to test whether the economizer controller can drive damper to the selected voltage. 7Y1O Press Enter to test whether the economizer controller can turn on or off the first stage of cooling (close or open relay Y1O).

7Y2O

7AUX1-O Press Enter to test AUX1-O connection (close or open relay AUX1-O). 7AUX2-O Press Enter to test AUX2-O connection (close or open relay AUX2-O).

Press Enter to test whether the economizer controller can turn on or off the second stage of cooling (close or open relay Y2O).

Page 47

Table 25 — Enter Running State

PARAMETER DESCRIPTION

8RUN STATE Change to Running State. Press Enter to confirm the change. 8ENTER RUN? Confirm the change to Running State.

8FACTORY DEF

8DEF CONFIRM? Confirm the factory resetting. 8ACT CNT RESET Damper count reset. 8VER x.x.x Firmware version information such as 0.1.10.

Perform factory reset. Press Enter to confirm the reset. (This action resets the controller password to default: OneBT.)

Table 26 — Enter Configuration State and Restart

PARAMETER DESCRIPTION

5CONFIG STATE Change to Configuration State. Press Enter to confirm the change. 5ENTER CONFIG? Confirm the change to Configuration State. 5RESTART Restart the economizer controller. Press Enter to confirm the restart. 5CONF RESTART Confirm the restart.

INSTALLING OPTIONAL 1196582 SINGLE OUTSIDE AIR ENTHALPY SENSOR

When using the 1196582 enthalpy sensor (see Fig. 63) for outside air changeover, the existing 1193547 dry bulb sensor (see Fig. 64) must be removed. The enthalpy sensor will be mounted in the same location as the dry bulb sensor (see Fig. 65). When the enthalpy sensor’s OA (Outside Air) temperature, enthalpy, and dew point are below their respective setpoints, the outside air can be used for free cooling. When any of these are above the setpoint, free cooling will not be available. Enthalpy setpoints are configurable and create an enthalpy boundary according to the user’s input. For additional details, see Fig. 66-67 and Table 27.

Harness 1201876 is required to be connected between the EconomizerONE harness in the return air chamber. Harness 1201876 has a 5-pin plug that connects directly to the 1196582 enthalpy sensor.

Enthalpy Control Sensor Configuration

The optional enthalpy control sensor (P/N: 1196582) communicates with the POL224 economizer controller using the 5-wire harness, 1201876. The 1196582 sensor can be used as a single outside air enthalpy, a differential return enthalpy, or a differential return temperature sensor. Refer to the base unit control wiring diagrams found earlier in this book to wire the 1196582 enthalpy sensor for each option. Use Fig. 63 and Table 29 on page 50 to locate the wiring terminals for each enthalpy control sensor.

Page 48

Fig. 63 — 1196582 Dimensional, Connection and Switching Information

Actuator

HH79NZ039 Outside Air Temperature Sensor

Outside Air Damper

Wiring Harness

Fig. 64 — 1193547 Dry Bulb and Mixed Air Sensor Wiring

Fig. 65 — EconomizerONE Component Locations

(CRECOMZR108A00 Shown)

Fig. 66 — California Title 24 Zones

Page 49

NOTE(S):

U.S. and Canada I-Codes / ASHRAE Zones

Climate Zone 1 Climate Zone 2 Climate Zone 3 Climate Zone 4 (Except Marine)

Climate Zone 5 and Marine Climate Zone 6 Climate Zone 7 and 8

Fig. 67 — U.S. and Canada Climate Zones

Table 27 — Enthalpy Manual Entry Setpoints for EconomizerONE Per Climate Zone

CLIMATE ZONES

2 TEMP OFF

1 65°F 22 Btu/lbm 43% 28 Btu/lbm 86% 83°F 33 Btu/lbm 48% 2 65°F 22 Btu/lbm 43% 28 Btu/lbm 86% 83°F 33 Btu/lbm 48% 3 65°F 22 Btu/lbm 43% 28 Btu/lbm 86% 83°F 33 Btu/lbm 48% 4 65°F 22 Btu/lbm 43% 28 Btu/lbm 86% 83°F 33 Btu/lbm 48% 5 70°F 22 Btu/lbm 28% 28 Btu/lbm 65% 83°F 33 Btu/lbm 48% 6 70°F 22 Btu/lbm 28% 28 Btu/lbm 65% 83°F 33 Btu/lbm 48%

7 and 8 75°F 22 Btu/lbm 19% 28 Btu/lbm 50% 83°F 33 Btu/lbm 48%

CALIFORNIA

TITLE 24 ZONES

2 TEMP OFF

1 75°F 22 Btu/lbm 19% 28 Btu/lbm 50% 83°F 33 Btu/lbm 48% 2 73°F 22 Btu/lbm 22% 28 Btu/lbm 55% 83°F 33 Btu/lbm 48% 3 75°F 22 Btu/lbm 19% 28 Btu/lbm 55% 83°F 33 Btu/lbm 48% 4 73°F 22 Btu/lbm 22% 28 Btu/lbm 55% 83°F 33 Btu/lbm 48% 5 75°F 22 Btu/lbm 19% 28 Btu/lbm 50% 83°F 33 Btu/lbm 48% 6 71°F 22 Btu/lbm 28% 28 Btu/lbm 62% 83°F 33 Btu/lbm 48% 7 69°F 22 Btu/lbm 32% 28 Btu/lbm 68% 83°F 33 Btu/lbm 48% 8 71°F 22 Btu/lbm 28% 28 Btu/lbm 62% 83°F 33 Btu/lbm 48%

9 71°F 22 Btu/lbm 28% 28 Btu/lbm 62% 83°F 33 Btu/lbm 48% 10 73°F 22 Btu/lbm 22% 28 Btu/lbm 55% 83°F 33 Btu/lbm 48% 11 75°F 22 Btu/lbm 19% 28 Btu/lbm 50% 83°F 33 Btu/lbm 48% 12 75°F 22 Btu/lbm 19% 28 Btu/lbm 50% 83°F 33 Btu/lbm 48% 13 75°F 22 Btu/lbm 19% 28 Btu/lbm 50% 83°F 33 Btu/lbm 48% 14 75°F 22 Btu/lbm 19% 28 Btu/lbm 50% 83°F 33 Btu/lbm 48% 15 75°F 22 Btu/lbm 19% 28 Btu/lbm 50% 83°F 33 Btu/lbm 48% 16 75°F 22 Btu/lbm 19% 28 Btu/lbm 50% 83°F 33 Btu/lbm 48%

CONTROLLER

DEFAULT SETTINGS

DEFAULT

SET POINTS

2 TEMP OFF — — 2 ENTH OFF — 2THL 2EHL RH%

63°F — — 28 Btu/lbm 94% 83°F 33 Btu/lbm 48%

LOWEST

SETTING

LOWEST

SETTING

RH% 2 ENTH OFF RH% 2THL 2EHL RH%

a See Fig. 67 for map of U.S. and Canada climate zones. b See Fig. 66 for map of California Title 24 zones.

Page 50

Economizers are shipped standard with an 1193547 outside

NOTE(S):

air dry bulb sensor (see Fig. 64). System default setting (high temp limit) is 63°F (17°C) and has a range of 48°F to 80°F (9°C to 27°C). Sensor is factory installed on economizer.

NOTE: A second 1193547 sensor is provided for mixed air temperature.

NOTE: California high temperature setting requirements by region are shown in Table 28.

Enthalpy Settings (Enthalpy Option) If installing the optional 1196582 enthalpy sensor, the

1193547 dry bulb outside air sensor must first be removed. Wire sensor to harness 1201876 and the (5) wires from the harness to the EconomizerONE harness in the return air chamber. Harness 1201876 has a 5-pin plug that connects directly to the 1196582 enthalpy sensor. Refer to the base unit control wiring diagrams earlier in this book for wiring connections. Refer to Fig. 63 and Table 29.

California’s Title 24 High Temperature Limit Settings

California’s Title 24 code requires a high temperature limit setting for all dry bulb outside air economizer changeover. The temperatures vary by the region within California. See Table 28 for high limit settings.

Table 28 — California Title 24 Regional High Limit

Dry Bulb Temperature Settings

CLIMATE

DEVICE TYPE

FIXED DRY

BULB

DIFFERENTIAL

DRY BULB

FIXED

ENTHALPY

+ FIXED DRY

BULB

a This table sourced from 2019 California Energy Code, Title 24, Part 6, Table

140.4-E Air Economizer High Limit Shut Off Control Requirements.

b Only the high limit control devices listed are allowed to be used and at the set

points listed. Others such as Dew Point, Fixed Enthalpy, Electronic Enthalpy, and Differential Enthalpy Controls, may not be used in any climate zone for compliance with Section 140.4(e)1 unless approval for use is provided by the Energy Commission Executive Director.

c At altitudes substantially different than sea level, the Fixed Enthalpy limit value

shall be set to the enthalpy value at 75°F and 50% relative humidity. As an example, at approximately 6,000 foot elevation, the fixed enthalpy limit is approximately 30.7 Btu/lb.

ZONES

1, 3, 5, 11-16 OAT exceeds 75°F (23.8°C)

2, 4, 10 OAT exceeds 73°F (22.7°C)

6, 8, 9 OAT exceeds 71°F (21.6°C)

7 OAT exceeds 69°F (20.5°C)

1, 3, 5, 11-16

2, 4, 10

6, 8, 9

All

REQUIRED HIGH LIMIT

(ECONOMIZER OFF WHEN):

DESCRIPTION

OAT exceeds

RA temperature

OAT exceeds return air temperature

OAT exceeds 28 Btu/lb of dry airb or

–2°F (–18.8°C)

–4°F (–20°C)

–6°F (–21.1°C)

OAT exceeds 75°F (23.8°C)

LEGEND

OAT — Outdoor-air Thermostat RA — Return Air

Table 29 — 1196582 Sensor Wiring Terminations

TERMINAL

NUMBER LABEL

1 TCOM NTC 10k Outside Air Temperature Sensor Output 2 TSIG NTC 10k Outside Air Temperature Sensor Output 3 HSIG 0-10 vdc Outside Air Relative Humidity Sensor Output 4 HCOM COMMON Sensor 24-v Common Input 5 H24V 24 vac Sensor 24-v Operating Voltage Input

TYPE DESCRIPTION

Page 51

CHECKOUT Inspect all wiring connections at the economizer module’s

terminals, and verify compliance with the installation wiring diagrams. For checkout, review the Status of each configured parameter and perform the Test Commands tests (refer to Table 24).

For information about menu navigation and use of the keypad see Interface Overview on page 32.

WARNING

ELECTRIC SHOCK HAZARD Failure to follow this warning could result in personal

injury, property damage, 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 may have more than one power switch. Ensure electrical service to rooftop unit agrees with voltage and amperage listed on the unit rating plate.

If any wiring changes are required, first be sure to remove power from the economizer module before starting work. Pay particular attention to verifying the power connection (24 vac).

Power Up

After the POL224 module is mounted and wired, apply power.

Initial Menu Display On initial start up, “Welcome” displays on the economizer

HMI screen. After a brief pause, the Parameter Settings — I/O Configuration (refer to Table 22) of the software appears, allowing the user to check that presets and default values are configured correctly.

Power Loss (Outage or Brownout)

All set points and advanced settings are restored after any power loss or interruption.

NOTE: All settings are stored in non-volatile flash memory.

Status

Use the Status menu (refer to Table 19) to check the parameter values for the various devices and sensors configured.

NOTE: For information about menu navigation and use of the keypad, see Interface Overview on page 32.

Checkout Tests

Use the Test Commands menu (refer to Table 24) to test the damper operation and any configured outputs. Only items that are configured are shown in the Test Commands menu.

NOTE: For information about menu navigation and use of the keypad, see Interface Overview on page 32.

To perform a Test Command test:

1. Scroll to the desired test in Test Command menu 7 using the Up and Down buttons.

2. Press the Enter button to select the item. RUN? appears.

3. Press the Enter button to start the test. The unit pauses and then displays IN PROGRESS. When the test is complete, DONE appears.

4. When all desired parameters have been tested, press Enter + Up to end the test.

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.

CAUTION

EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment

damage. Be sure to allow enough time for compressor start-up

and shutdown between checkout tests so that you do not short-cycle the compressors.

Page 52

TROUBLESHOOTING

NOTE(S):

For EconomizerONE troubleshooting issues see Table 30.

Table 30 — Operating Issues and Concerns

SYMPTOM REASON SOLUTION

An alarm is displayed on the LCD

DAC LED is blinking RED Damper slippage Check whether the damper works properly. DAC LED is blinking

RED quickly

DAC LED is OFF

Economizer controller has no alarm, but the Free Cooling LED will not turn on when the OA seems to be suitable for Free Cooling

Economizer controller/mechanical cooling is not operating

Firmware update failure

Free Cooling LED is solid RED

Free Cooling LED is blinking RED

Incorrect controller password error on mobile application

RS485 communication failure

Sensor LED is blinking RED Excess outdoor air Check the whole economizer working system, such as the sensor, damper, and thermostat.

Sensor LED is solid RED

Sensor LED is OFF CO

Sensor LED is YELLOW Humidity sensor error

Wi-Fi connection failure

Sensor, damper, or the whole working system may not work properly

Damper unplugged Check whether the damper is connected.

Terminal ACT-FB is configured but there is no available feedback signal

Shutoff SP setting error

OA temp is too low

OA temp is too high or too humid

No input power

Brownout

Y1/Y2 signal is missing from the thermostat

24 vac~ and 24 vac ⊥ are incorrectly wired

Application file is damaged, operation is incorrect, and/or USB flash disk does not work properly

Sensor, damper, or whole working system may not work properly

Not economizing when it should Check the whole economizer working system, such as the sensor, damper, and thermostat.

and single enthalpy (control

For CO

mode 3) configurations from the factory, the password has changed

RS485 signal or configuration error

Mixed Air (MA) sensor error Check the MA sensor. It must be either a Type II NTC 10K or 0-10 vdc sensor.

Outside Air (OA)/Return Air (RA) sensor error

Air temperature failure/fault

sensor error

Wi-Fi/WLAN stick error or wrong user name and password

Check sensor, damper, or the whole working system following the detailed alarm information.

Check whether the feedback signal is connected; check if ACT-FB is faulty.

Shutoff temperature and/or enthalpy set point is incorrectly set up. Consult an HVAC professional to set up the shutoff set point correctly.

The OA temperature is too low; therefore, there is no cooling demand. This could possibly enable anti-freeze protection.

In DIFF mode, even though OA temperature is lower than RA temperature, if both OA and RA temperatures exceed the high limit, then Free Cooling turns off. In Differential Enthalpy control mode, even though OA enthalpy is lower than RA enthalpy, if both OA and RA enthalpy exceed the high limit, then Free Cooling turns off.

Use a multi-meter to check whether there is 24 vac ± 25% (18-30 vac) at the POWER terminals. If there is no voltage or if the voltage is significantly low, then check the transformer output voltage at the RTU. If 24-v is not present at the transformer secondary side, then check the primary line voltage to the transformer. If the line voltage is not present at the transformer primary side, then check the primary power to the RTU, fuses, circuit breaker, and so on.

If voltage is below 17-v, then the economizer controller may be in Brownout Protection mode. This mode disables all of the relay outputs. When the power is 19 vac or higher, the economizer controller and RTU operate normally.

Mechanical cooling does not run until there is cooling demand (Y1/Y2 Active). Check the wiring from Y1I and Y2I terminals to the commercial thermostat. 24-v should be present between Y1I/Y2I and Y1O/Y2O respectively.

24 vac power supply has polarity when all devices are powered by the same 24 vac transformer; reversing polarity may cause a short circuit that can damage the system. Follow the transformer polarity mark, check the wiring of 24-v~ (or G or 24-v+), and ensure that they are tied to the same polar of 24 vac power supply; while checking the wiring of ⊥ (or G0 or 24-v- or COM), ensure that they are all tied to another polar of 24 vac power supply.

Reload a BIN file, restart the controller, update firmware service provider if failure still exists.

Check sensor, damper, or the whole working system following the detailed alarm information.

For units coming from the factory with CO use the controller password OneBT2.1. For all other units, use the controller password OneBT. Performing a factory reset on the controller will also reset the password to OneBT.

Check wiring, configuration, Baud Rate (using mobile application), and other network communication parameters.

Check the wiring and signal of the OA sensor. If in Differential (DIFF) mode, also check the RA sensor. The following sensor signals are valid: Type II NTC 10K or 0-10 vdc temperature. 0-10 vdc or 4-20 mA humidity.

Check the air temperature sensor signal. The valid signal must be Type II NTC 10K or 0-10 vdc.

Check CO type.

Check humidity sensor connection, sensor signal (under range or over range), and sensor signal type.

Unplug and re-plug in the Wi-Fi/WLAN stick, enter a correct user name and password, restart the controller, or replace the Wi-Fi/WLAN stick. If the Wi-Fi/WLAN stick is POL903.00/100, then the default user name and password are Siemens-WLAN-Stick and SIBPAdmin. DNS name is siemens.wlanstick. Contact Application Engineering for information on this accessory.

sensor connection, sensor signal (under range or over range), and sensor signal

configuration or single enthalpy (control mode 3),

, or change a USB flash disk. Contact

a Back up configurations before firmware update. All the previous configuration data is erased after firmware update. Contact Application Engineering for more information

on support for firmware. IMPORTANT: If the controller enters the configuration state for the convenience of I/O configurations, then users can manually switch to the running state after finishing configurations. To do so, press Enter + Up at the same time, then press Enter to confirm the switch after 8RUN STATE appears on the LCD.

Page 53

Controller Options

Return Air Smoke Detector (As Shipped)

Step 1 Step 2 Step 3

LOW AMBIENT If the unit comes with electromechanical (EM) controls, then

no adjustment is necessary.

Smoke Detectors

Smoke detectors are available as factory-installed options on RGV models. Smoke detectors may be specified for supply air only, for return air without or with economizer, or in combination of supply air and return air. Return-air smoke detectors are arranged for vertical return configurations only. All components necessary for operation are factoryprovided and mounted. The unit is factory-configured for immediate smoke detector shutdown operation; additional wiring or modifications to unit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements.

Units equipped with factory-optional return-air smoke detectors require a relocation of the sensor module at unit installation. See Fig. 68 for the as-shipped location.

Completing Return Air Smoke Sensor Installation

1. Unscrew the 2 screws holding the return air smoke detector assembly. See Fig. 69, Step 1. Save the screws.

2. Turn the assembly 90 degrees and then rotate end to end. Make sure that the elbow fitting is pointing down. See Fig. 69, Step 2.

3. Screw the sensor and detector plate into its operating position using screws from Step 1. See Fig. 69, Step 3.

4. Connect the flexible tube on the sampling inlet to the sampling tube on the basepan.

Additional Application Data

Refer to the application data document “Factory Installed Smoke Detectors for Small and Medium Rooftop Units 2 to 25 Tons” for discussions on additional control features of these smoke detectors including multiple unit coordination.

Fig. 68 — Return Air Smoke Detector,

Shipping Position

Fig. 69 — Completing Installation of Return Air Smoke Sensor

Page 54

Step 14 — Adjust Factory-Installed Options

SMOKE DETECTORS Smoke detector(s) will be connected at the Unit Control

Board (UCB), at terminals marked “Smoke Shutdown.” Detach the jumper covering the Smoke Shutdown terminals on the UCB and then attach the wiring harness from the smoke detector.

ECONOMIZERONE OCCUPANCY SWITCH External occupancy control is managed through a connec-

tion on the Unit Control Board. If external occupancy control is desired, connect a time

clock or remotely controlled switch (closed for Occupied, open for Unoccupied sequence) at terminals marked OCCUPANCY. Detach the jumper covering the “Occupancy” terminals on the UCB and then attach the required connections.

Step 15 — Install Accessories

Available accessories include:

•Roof curb

• Thru-base connection kit (must be installed before unit is set on roof curb)

• LP conversion kit

• Flue discharge deflector

• Manual outside air damper

• Two-position motorized outside air damper

• EconomizerONE (with POL224 controller)

• Power Exhaust

• Differential dry-bulb sensor (EconomizerONE)

• Outdoor enthalpy sensor

• Differential enthalpy sensor

•CO

• Louvered hail guard

• Phase monitor control

Refer to separate installation instructions for information on installing these accessories.

sensor

Page 55

Step 16 — Fan Speed Set Up

Fan Speed Set Up Controls

Switch 1

5-Pin DIP

UNITS WITH ELECTROMECHANICAL CONTROLS The fan speed set up controls are located on the lower sec-

tion of the Unit Control Board (UCB). See Fig. 70 for the location on 3-phase voltage units or Fig. 71 for the location on single phase voltage units.

1. Check the job specifications for the cfm (cubic feet per minute) and ESP (external static pressure) required.

2. Using the chart on the Fan Speed Set Up labels (see Fig. 73), calculate the vdc from the cfm and ESP for the base unit. Then add vdc for any accessories installed per the “Field Accessories” section of the label.

NOTE: The Fan Speed Set Up labels are located on the High Voltage cover in the Control Box.

3. Connect a multimeter to the vdc terminals on the UCB.

4. Set the Range Switch to either A, B, or C per the Switch Range table.

5. Using a straight blade screwdriver, turn the vdc control dial to fine tune the vdc reading.

6. Record the reading in the Field Setting field.

NOTE: Fan set-up vdc is not affected by the operating stage of the unit.

Fig. 71 — UCB Fan Speed Controls —

Single Phase Units

NOTE: On single phase units, the approximate static pressure of the ductwork must be set for optimal unit efficiency. The unit is factory set for greater than 1.0 in. wg. If the external static pressure is less than 1.0 in. wg, slide switch 1 on the 5-pin DIP to the “ON” position. See Fig. 72.

Fig. 72 — Detail — 5-Pin DIP Switch

Fig. 70 — UCB Fan Speed Controls — 3-Phase Units

Page 56

VDC Calculator

NOTE: Values in the Field Accessories section are vdc adders.

1500 1625 1750 1875 2000

CFM

2125 2250 2375

UNIT MODEL NUMBER

2500

Field Accessories:

Fig. 73 — Example of Fan Speed Set Up Labels for Electromechanical Controls

0.2

6.0

6.3

6.7

7.1

7.5

7.9

8.3

8.7

9.1

0.1

0.4

6.7

7.1

7.4

7.7

8.1

8.4

8.8

9.2

9.5

0.1

0.6

7.4

7.7

8.0

8.3

8.7

9.0

9.4

9.7

0.1

ESP in. wg

0.8

8.0

8.3

8.6

8.9

9.2

9.5

9.9

0.1

1.0

8.5

8.8

9.1

9.4

9.7

0.1

1.2

9.0

9.3

9.5

9.8

0.1

1.4

9.5

9.7

10.0

0.1

1.6 1.8 2.0

9.9

0.1Economizer

Factory Setting:

9.0 V

Field Setting:

Record field setting here

V

Switch Range:

4.1 - 7.5

6.9 - 8.7

7.7 - 10.0

* Overlap in A, B, C switch range designed for maximum field adjustment potential. For example

7.2 can be set at either A or B.

Page 57

Page 58

Form No. RGV-036-072-02SI Rev. B Pg 58 3-24 Replaces: RGV-036-072-01SI

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Page 59

START-UP CHECKLIST FOR RGV036-072 SINGLE PACKAGE ROOFTOP

GAS HEATING/ELECTRIC COOLING UNIT

(Remove and use for job file)

NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this document.

I. PRELIMINARY INFORMATION

MODEL NO. _____________________________________________ JOB NAME ______________________________________________ SERIAL NO. _____________________________________________ ADDRESS _______________________________________________ START-UP DATE ________________________________________ TECHNICIAN NAME _____________________________________ ADDITIONAL ACCESSORIES _____________________________________________________________________________________________________

II. PRE-START-UP

Verify that all packaging materials have been removed from unit. (Y/N) _____ Verify installation of outdoor air hood. (Y/N) _____ Verify installation of flue exhaust and inlet hood. (Y/N) _____ Verify that condensate connection is installed per instructions. (Y/N) _____ Verify that all electrical connections and terminals are tight. (Y/N) _____ Verify ground integrity with a continuity test. (Y/N) _____ Verify gas pressure to unit gas valve is within specified range. (Y/N) _____ Check gas piping for leaks. (Y/N) _____ Check that indoor-air filters are clean and in place. (Y/N) _____ Check that outdoor air inlet screens are in place. (Y/N) _____ Verify that unit is level. (Y/N) _____ Verify that fan assembly is free of obstructions and rotor spins freely. (Y/N) _____ Verify that scroll compressors are rotating in the correct direction. (Y/N) _____ Verify installation of thermostat. (Y/N) _____ Verify that crankcase heaters have been energized for at least 24 hours. (Y/N) _____

III. START-UP

ELECTRICAL

Supply Voltage L1-L2_____________ L2-L3_____________ L3-L1_____________ Compressor Amps 1 L1 _____________ L2 _____________ L3 _____________ Compressor Amps 2 L1 _____________ L2 _____________ L3 _____________ Supply Fan Amps L1 _____________ L2 _____________ L3 _____________

TEMPERATURES

Outdoor-Air Temperature _____________ °F DB (Dry Bulb) Return-Air Temperature _____________ °F DB _____________ °F WB (Wet Bulb) Cooling Supply Air Temperature _____________ °F Gas Heat Supply Air _____________ °F

Form No. RGV-036-072-02SI Rev. B Pg CL-1 3-24 Replaces: RGV-036-072-01SI

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Page 60

PRESSURES

Gas Inlet Pressure in. wg _____________ in. wg Gas Manifold Pressure STAGE 1 _____________ in. wg

STAGE 2 _____________ in. wg Refrigerant Suction _____________ PSIG Refrigerant Discharge _____________ PSIG Verify Refrigerant Charge using Charging Charts. (Y/N) _____

GENERAL

Economizer minimum vent and changeover settings to job requirements (if equipped). (Y/N) _____ Verify smoke detector unit shutdown by utilizing magnet test. (Y/N) _____ Verify outdoor fan operation. On units with head pressure controls, verify outdoor fan ramps up. (Y/N) _____

IV. HOT GAS RE-HEAT SYSTEM START-UP

STEPS

1. Check UCB (Unit Control Board) for jumper 1, 2, 3 (Jumper 1, 2, 3 must be cut and open). (Y/N) _____

2. Open humidistat contacts. (Y/N) _____

3. Start unit In cooling (Close Y1). (Y/N) _____

OBSERVE AND RECORD

a. Suction pressure ______________ PSIG b. Discharge pressure ______________ PSIG c. Entering air temperature ______________ °F d. Liquid line temperature at outlet or reheat coil ______________ °F e. Confirm correct rotation for compressor. (Y/N) _____ f. Check for correct ramp-up of outdoor fan motor as condenser coil warms. (Y/N) _____

4. Switch unit to high-latent mode (sub-cooler) by closing humidistat with Y1 closed. (Y/N) _____

5. Check unit charge per charging chart. (Y/N) _____

OBSERVE

a. Reduction in suction pressure (5 to 7 psi expected). (Y/N) _____ b. Discharge pressure unchanged. (Y/N) _____ c. Liquid temperature drops to 50 to 55°F range. (Y/N) _____ d. LSV solenoid energized (valve closes). (Y/N) _____

6. Switch unit to dehumid (reheat) by opening Y1. (Y/N) _____

OBSERVE

a. Suction pressure increases to normal cooling level. (Y/N) _____ b. Discharge pressure decreases (35 to 50 psi). (Limited by head pressure control.) (Y/N) _____ c. Liquid temperature returns to normal cooling level. (Y/N) _____ d. LSV solenoid energized (valve closes). (Y/N) _____ e. DSV solenoid energized, valve opens. (Y/N) _____

7. With unit in dehumid mode, close W1 compressor and outdoor fan stop; LSV and DSV solenoids de-energized. (Y/N) _____

8. Open W1 restore unit to dehumid mode. (Y/N) _____

9. Open humidistat input compressor and outdoor fan stop; LSV and DSV solenoids de-energized. (Y/N) _____

10. Restore set points for thermostat and humidistat. (Y/N) _____

CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Form No. RGV-036-072-02SI Rev. B Pg CL-2 3-24 Replaces: RGV-036-072-01SI

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ICP RGV-036-072-02SI User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY CONSIDERATIONS

Rated Indoor Airflow

INSTALLATION

Jobsite Survey

Step 1 — Plan for Unit Location

Step 2 — Plan for Sequence of Unit Installation

CURB-MOUNTED INSTALLATION

PAD-MOUNTED INSTALLATION

Step 3 — Inspect Unit

Step 4 — Provide Unit Support

Step 6 — Rig and Place Unit

POSITIONING ON CURB

ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR SLAB MOUNT)

Step 5 — Field Fabricate Ductwork

Step 7 — Convert to Horizontal and Connect Ductwork (When Required)

Step 8 — Install Outside Air Hood

ECONOMIZER AND TWO-POSITION DAMPER HOOD PACKAGE REMOVAL AND SETUP (FACTORY OPTION)

Step 10 — Install Flue Hood

Step 9 — Units with Hinged Panels Only

Step 11 — Install Gas Piping

FACTORY OPTION THRU-BASE CONNECTIONS (GAS CONNECTIONS)

Step 13 — Make Electrical Connections

UNITS WITH FACTORY-INSTALLED NON-FUSED DISCONNECT

CONVENIENCE OUTLETS

FACTORY-OPTION THRU-BASE CONNECTIONS (ELECTRICAL CONNECTIONS)

T H E R M O S T A T

UNITS WITHOUT THRU-BASE CONNECTIONS (ELECTRICAL CONNECTIONS)

HOT GAS RE-HEAT CONTROL CONNECTIONS

Integrated Gas Controller

Hot Gas Re-Heat Dehumidification System (Optional)

EconomizerONE (Factory Option)

ECONOMIZER SETTINGS

WIRING

SETUP AND CONFIGURATION

INSTALLING OPTIONAL 1196582 SINGLE OUTSIDE AIR ENTHALPY SENSOR

TROUBLESHOOTING

Controller Options

Smoke Detectors

Step 14 — Adjust Factory-Installed Options

Step 15 — Install Accessories

Step 16 — Fan Speed Set Up