Carrier 50TC User Manual

50TC Single Package Rooftop, 50Hz Cooling Only Sizes 07, 08, 09, and 12 with Puronr (R---410A) Refrigerant

Installation Instructions

NOTE: This manual discusses only the mechanical installation of this unit. Star--up procedures, operating sequences and service instructions are included in a separate Service/Maintenance manual which is not included with this unit. Other manuals may be required for specific factory--installed options.

Read through the entire installation instruction manual before starting the installation, to familiarize yourself with all steps and to identify additional reference materials required.

Contact your local Carrier representative for additional service reference materials.

TABLE OF CONTENTS

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

INSTALLATION 6...............................

Step 1 -- Plan for Unit Location 6..................

Step 2 -- Plan for Sequence of Unit Installation 7......

Step 3 -- Inspect Unit 7...........................

Step 4 -- Provide Unit Support 7...................

Step 5 -- Field Fabricate Ductwork 10...............

Step 6 -- Rig and Place Unit 11....................

Step 7 -- Convert to Horizontal & Connect Ductwork 11

Step 8 -- Install Outside Air Hood 11...............

Step 9 -- Install External Condensate Trap and Line 13.

Step 10 -- Make Electrical Connections 13...........

Step 11 -- Adjust Factory--Installed Options 35........

Step 12 -- Install Accessories 35...................

SAFETY CONSIDERATIONS

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

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloths for brazing operations and have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes for special requirements. In absence of local codes, it is recommended that the USA standard ANSI/NFPA 70, National Electrical Code (NEC), be followed.

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

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

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

. When you see this symbol on the

WARNING

ELECTRICAL SHOCK HAZARD

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

Before performing service or maintenance operations on unit, always turn off main power switch to unit and install lockout tag. Unit may have more than one power switch.

WARNING

UNIT OPERATION AND SAFETY HAZARD

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

Puronr (R--410A) refrigerant systems operate at

50TC

higher pressures than standard R--22 systems. Do not use R--22 service equipment or components on Puron refrigerant equipment.

WARNING

PERSONAL INJURY AND ENVIRONMENTAL HAZARD

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

Relieve 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

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing furnaces.

Vertical Connections / Economizer

50TC

Horizontal Connections / Economizer

Fig. 1 -- Unit Dimensional Drawing – 07 Size Units

C09447

50TC

C09448

Fig. 1 -- Unit Dimensional Drawing – 07 Size Unit (cont.)

Vertical Connections / Economizer

50TC

Horizontal Connections / Economizer

Fig. 2 -- Unit Dimensional Drawing – 08, 09 and 12 Size Units

C09450

50TC

C09451

Fig. 2 -- Unit Dimensional Drawing – 08, 09 and 12 Size Units (cont.)

INSTALLATION

Jobsite Survey

Complete the following checks before installation.

1. Consult local building codes or the U.S.A. National Electrical Code (Ref: ANSI/NFPA 70, [American National Standards Institute/National Fire Protection Association], latest revision) 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. 3.

NOTE: Consider also the effect of adjacent units. Unit may be installed directly on wood flooring or on

approved 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.

457 [18"]

1067 [42"]

Required bottom condensate drain connection. Otherwise, 914mm [36"] for condensate connection.

457 [18"]

C09454

Fig. 3 -- Service Clearance Dimensional Drawing

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

Select a unit mounting system that provides adequate height to allow installation of condensate trap per requirements.RefertoStep9—InstallExternal Condensate Trap and Line – for required trap dimensions.

Roof mount —

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

Table 1 – Operating Weights

50TC --- UNITS KG (LB)

Component A07 D08 D09 D12

Base Unit 275 (607) 340.5 (750) 388.2 (855) 392.7 (865)

Economizer

Vertical 36 (80) 36 (80) 36 (80) 36 (80)

Horizontal 48 (105) 48 (105) 48 (105) 48 (105)

Curb

356 mm/14---in 60 (133) 60 (133) 65 (143) 60 (133)

610 mm/24---in 79 (174) 79 (174) 69 (153) 79 (174)

Step 2 — Plan for Sequence of Unit Installation

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

Curb--mounted installation —

Install curb Install field--fabricated ductwork inside curb Install accessory thru--base service connection package

(affects curb and unit) (refer to accessory installation instructions for details)

Prepare bottom condensate drain connection to suit planned condensate line routing (refer to Step 9 for details)

Rig and place unit Install outdoor air hood Install condensate line trap and piping Make electrical connections Install other accessories

Pad--mounted installation —

Prepare pad and unit supports Check and tighten the bottom condensate drain

connection plug Rig and place unit Convert unit to side duct connection arrangement Install field--fabricated ductwork at unit duct openings Install outdoor air hood Install condensate line trap and piping Make electrical connections Install other accessories

Frame--mounted installation —

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

Step 3 — Inspect unit

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

Step 4 — Provide Unit Support

Roof Curb Mount —

Accessory roof curb details and dimensions are shown in Fig. 4 (size 07 units) and Fig. 5 (size 08 – 12 units). Assemble and install accessory roof curb in accordance with instructions shipped with the curb.

NOTE: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof curb as shown in Fig. 4 and Fig. 5. 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 show in Fig. 6. 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 package must be installed before the unit is set on the roof curb.

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.

Slab Mount (Horizontal Units Only) —

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

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

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

A non--combustible sleeper rail can be used in the unit curb support area. If sleeper rails cannot be used, support the long sides of the unit with a minimum of 3 equally spaced 102 mm x 102 mm (4--in. x 4--in.) pads on each side.

50TC

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

CRBTMPWR003A01

CRBTMPWR004A01

50TC

CONNECTOR

PKG. ACCY.

[551]

/16”

1’-4”

[406]

1’-9

D ALT

DRAIN

HOLE

/4”

[44.5]

POWER CONTROL

/4” [19] NPT

/4” [31.7]

/2” [12.7]

NPT

ACCESSORY

POWER

/2” [12.7]

NPT

ROOFCURB

ACCESSORY

CRRFCURB001A01

CRRFCURB002A01

A UNIT SIZE

1’-2”

[356]

50TC-A07

2’-0”

[610]

NOTES:

1. Roof curb accessory is shipped disassembled.

2. Insulated panels.

3. Dimensions in [ ] are in millimeters.

4. Roof curb: galvanized steel.

5. Attach ductwork to curb (flanges of duct rest on curb).

6. Service clearance: 4 ft on each side.

7. Direction of airflow.

Fig. 4 -- Roof Curb Details – 07 Size Units

C09452

50TC-*08

– 1212

50TC

ROOFCURB

ACCESSORY

CRRFCURB003A01

CRRFCURB004A01

1’ - 2”

[356]

2’ - 0”

[610]

UNIT SIZE

50TC-*08

–

Fig.5--RoofCurbDetails–08—12SizeUnits

C09453

MAXIMUM ALLOWABLE

DIFFERENCE IN. (MM)

A-B

0.5” (13)

B-C

1.0” (25)

A-C

1.0” (25)

C06110

Fig. 6 -- Unit Leveling Tolerances

Step 5 — Field Fabricate Ductwork

Cabinet return-air static pressure (a negative condition) shall not exceed 87 Pa (0.35 in. wg) with economizer or 112 Pa (0.45 in. wg) without economizer.

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

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.

For units with accessory electric heaters: Horizontal applications require a minimum clearance to combustible surfaces of 25 mm (1--in) from duct for first 305 mm (12--in) away from unit. Vertical applications do not require a minimum clearance.

Minimum clearance is not required around ductwork.

50TC

PLACE ALL SEAL STRIP

“B”

FAN

SIDE

UNIT

50TC-A07 336 740 1890 74.5 965 38.0 850 33.5

50TC-D08 641 1410 2235 88.0 1040 41.0 1055 41.5

50TC-D09 693 1525 2235 88.0 1030 40.5 1255 49.5

50TC-D12 711 1565 2235 88.0 1015 40.0 1255 49.5

NOTES:

1. Dimensions in ( ) are in inches.

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.

914-1371 (36"-54")

SEE DETAIL “A”

“C”

“A”

MAX WEIGHT

KG LB MM IN MM IN MM IN

IN PLACE BEFORE PLACING UNIT ON ROOF CURB

DUCT END

DIMENSIONS

A B C

DETAIL A

C09458

Fig. 7 -- Rigging Details

Step 6 — Rig and Place Unit

Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Table 1 and Fig. 7 for additional information.

Lifting holes are provided in base rails as shown in Fig. 7. Refer to rigging instructions on unit.

CAUTION

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.

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

PositioningonCurb—

Position unit on roof curb so that the following clearances

are maintained: 6.4 mm (

/4in.) clearance between the

roof curb and the base rail inside the front and back,

0.0 mm (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 equal to section C--C in Figs. 4 and 5.

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

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

C06108

Fig. 8 -- Horizontal Conversion Panels

50TC

Step 8 — Install Outside Air Hood

Economizer Hood Removal and Setup -- Factory Option

1. The hood is shipped in knock--down form and located in the return air compartment. It is attached to the economizer using two plastic tie--wraps.

2. To gain access to the hood, remove the filter access panel. (See Fig. 9.)

3. Locate and cut the (2) plastic tie--wraps, being careful to not damage any wiring. (See Fig. 10.)

4. Carefully lift the hood assembly through the filter access opening and assemble per the steps outlined in Economizer Hood and Two–Position Hood on page 12.

Step 7 — Convert to Horizontal and Connect Ductwork (when required)

Unit is shipped in the vertical duct configuration. Unit without 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 and remove covers. Using the same screws, install covers on vertical duct openings with the insulation--side down. Seals around duct openings must be tight. See Fig. 8.

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.

FILTER ACCESS PANEL

INDOOR COIL ACCESS PANEL

C06023

Fig. 9 -- Typical Access Panel Locations

Remove Hood Parts

Cut Plastic Ties (2) Places

Economizer

Economizer Hood and Two--Position Hood—

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. 12.

TOP PANEL

Fig. 10 -- Economizer Parts, Shipping Location

50TC

Two Position Damper Hood Removal and Setup -Factory Option

1. The hood is shipped in knock--down form and assembled to a metal support tray using plastic stretch wrap. Located in the return air compartment, the assembly’s metal tray is attached to the basepan and also attached to the damper using two plastic tie--wraps.

2. To gain access to the hood, remove the filter access panel. (See Fig. 9.)

3. 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. 11.) Be careful to not damage any wiring or cut tie--wraps securing any wiring.

4. Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the steps outlined in the following procedure Economizer Hood and Two–Position Hood.

C08633

TOP PANEL

INDOOR COIL ACCESS PANEL

C06025

INDOOR COIL ACCESS PANEL

CAULK HERE

Fig. 12 -- Indoor Coil Access Panel Relocation

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. 13.

TOP PANEL

INDOOR COIL ACCESS PANEL

LEFT HOOD SIDE

19 1/16”

(483mm)

SCREW

Hood Parts

Plastic Tie Wrap Qty (2)

Screws for Metal Tray Qty (2)

C08639

Fig. 11 -- Two--Position Damper, Shipping Location

33 3/8”

(848mm)

HOOD DIVIDER

Fig. 13 -- Economizer Hood Construction

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

4. Insert the hood divider between the hood sides. See Fig. 13 and 14. 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.

C06026

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. 14.

The piping for the condensate drain and external trap can be completed after the unit is in place. See Fig. 16.

MINIMUM PITCH 25 mm (1 in.) PER 3m (10 ft.) OF LINE

BASE RAIL

OPEN VENT

51 mm

(2 in.)

MIN

DIVIDER

OUTSIDE AIR

HOOD

CLEANABLE

BAROMETRIC RELIEF

ALUMINUM FILTER

FILTER

FILTER CLIP

C08634

Fig. 14 -- Economizer Filter Installation

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

7. Replace the filter access panel.

Step 9 — Install External Condensate Trap and Line

The unit has one 19 mm(3/4-in.) condensate drain connection on the end of the condensate pan and an alternate connection on the bottom. See Fig. 15. 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 12.7 mm extension.

To use the alternate bottom drain connection, remove the red drain plug from the bottom connection (use a 12 mm

/2--in.] square socket drive extension) and install it in the

side drain connection.

/2--in.) square socket drive

TO ROOF DRAIN

DRAIN PLUG

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

SEE NOTE

ROOF CURB

C09387

Fig. 16 -- Condensate Drain Piping Details

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

19 mm (

/4-in.).

Step 10 — Make Electrical Connections

WARNING

ELECTRICAL SHOCK HAZARD

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

Do not use gas piping as an electrical ground. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with local electrical codes or in absence of local codes, it is recommended that the U.S.A. standard ANSI/NFPA 70, National Electrical Code (NEC), be followed.

50TC

CONDENSATE PAN (SIDE VIEW)

STANDARD SIDE DRAIN

DRAIN

PLUG

(FACTORY-INSTALLED)

Fig. 15 -- Condensate Drain Pan (Side View)

ALTERNATE BOTTOM DRAIN

C08021

NOTE: Check all factory and field electrical connections for tightness. Field--supplied wiring shall conform with the limitations of 33_C(63_F) rise.

Field power wires are connected to the unit at line--side pressure lugs on compressor contactor C and indoor fan contactor IFC (see wiring diagram label for control box component arrangement) or at factory--installed option non--fused disconnect switch. Use copper conductors only.

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

The unit is factory wired for the voltage shown on ;the nameplate. Refer to the unit label diagram for additional information.

WARNING

FIRE HAZARD

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

Do not connect aluminum wire between disconnect switch and air conditioning unit.. Use only copper wire. (See Fig. 17.)

ELECTRIC

DISCONNECT

50TC

SWITCH

COPPER

WIRE ONLY

ALUMINUM

WIRE

Fig. 17 -- Disconnect Switch and Unit

A93033

Units Without Disconnect Option

C IFC

11 13 13

Disconnect

L2 L3

Units With Disconnect Option

Factory

Wiring

Optional

Disconnect

Switch

L1 L 2 L3

Disconnect factory test leads; discard.

Fig. 18 -- Power Wiring Connections

Table 2 – American/European Wire Conversions

C09411

Units Without Factory--Installed Disconnect —

When installing units, provide a disconnect switch of adequate size per local or national wiring code. 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.

Units with Factory--Installed Disconnect —

The factory--installed option disconnect switch is located in a weatherproof enclosure located under the main control box. The manual switch handle is accessible through an opening in the access panel.

All units --

All field wiring must comply with all local codes. Size wire based on MCA (Minimum Circuit Amps) on the unit informative plate. See Fig. 18 for power wiring connections to the unit power terminal block and equipment ground.

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

AMERICAN EUROPEAN

Industry

Standard Size

American

Conversion (mm

)

European

Standard Size (mm

)

20 AWG 0.52 0.5

18 AWG 0.82 1.0

16 AWG 1.30 1.5

14 AWG 2.08 2.5

Thru--Base Connections —

This service connection kit consists of a 12.7 mm electrical bulkhead connector and a 31.75 mm (1

/2-- i n )

/4-- i n ) electrical bulkhead connector, all factory--installed in the embossed (raised) section of the unit basepan in the

condenser section. The 12.7 mm

/2--in) bulkhead

connector enables the low--voltage control wires to pass

through the basepan. The 31.75 mm (1

/4--in) electrical bulkhead connector allows the high--voltage power wires to pass through the basepan. See Fig. 19.

LOW VOLTAGE CONDUIT CONNECTOR

All field wiring must comply with the appropriate national electrical codes and local requirements.

HIGH VOLTAGE CONDUIT CONNECTOR

Fig. 19 -- Thru--Base Connection Fittings

C08637

Check tightness of connector lock nuts before connecting electrical conduits.

installation instructions for additional features which might require additional conductors in the cable.

Field--supplied and field--installed liquidtight 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 —

1. Install power wiring conduit through side panel openings. Install conduit between disconnect and control box.

2. Install power lines to terminal connections as shown

50TC

in Fig. 18.

All Units —

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 following formula to determine the percent of voltage imbalance.

% Voltage Imbalance = 100 x

max voltage deviation from average voltage

average voltage

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

Field Control Wiring —

The 50TC unit requires an external temperature control device. This device can be a thermostat (field--supplied) or a PremierLink controller (available as factory--installed option or as field--installed accessory, for use on a Carrier Comfort Network or as a stand alone control) or the RTU--MP Controller for Building Management Systems using non--CCN protocols (RTU--MP is available as a factory--installed option only).

Thermostat —

Install a Carrier--approved accessory thermostat according to installation instructions included with the accessory. For complete economizer function, select a two--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.

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 seven leads. If the thermostat does not require a 24--v source (no “C” connection required), use a thermostat cable or equivalent with minimum of six leads. Check the thermostat

C09103

For wire runs up to 15 m (50 ft.), use no. 18 AWG (American Wire Gage) insulated wire (35_C minimum). For15to23m(50to75ft.),useno.16AWGinsulated wire (35_C minimum). For over 23 m (75 ft.), use no. 14 AWG insulated wire (35_C minimum). All 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.

Central

Typical

Thermostat

Connections

O/B/Y2

(Note 1)

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

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

Note 3: W2 connection not required on units with single-stage heating. Field Wiring

(Note 3)

(Note 2)

Terminal

T–STAT

Board

C09459

Fig. 20 -- Typical Low--Voltage Control Connections

Unit without thru--base connection kit —

Pass the thermostat control wires through the hole provided in the end panel (see item “D” in the view labeled “LEFT” in Fig. 1 and Fig. 2); 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 Central Terminal Board. (CTB) See Fig. 21.

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

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.

Table 3 – Heater Model Number

Bare Heater Model Number C R H E A T E R 0 1 6 A 0 0

Heater Sales Package PNO Includes:

Bare Heater Carton and packing materials Installation sheet

C R H E A T E R 1 1 6 A 0 0

Electric Heaters

50TC units may be equipped with field--installed accessory electric heaters. Each heater is a pre--assembled module, with heater frames holding open coil resistance wires strung through ceramic insulators, line--break limit switches and two control contactors for two--stage heating control.

The heater module is installed in the compartment below the indoor (supply) fan outlet. Access is through the indoor access panel. Heater modules slide into the compartment on tracks along the bottom of the heater opening. See Fig. 22, Fig. 23 and Fig. 24. Refer to the Electric Heater Kit Installation Instructions for complete details.

Not all available heater modules may be used in every unit. Use only those heater modules that are Carrier approved for use in a specific size. Refer to the label on the unit cabinet for the list of approved heaters.

Unit heaters are marked with Heater Model Numbers. But heaters are ordered as and shipped in cartons marked with a corresponding heater Sales Package part number. See Table 3 for correlation between heater Model Number and Sales Package part number.

NOTE: The value in position 9 of the part number differs between the sales package part number (value is 1) and a bare heater model number (value is 0).

DISCONNECT MOUNTING LOCATION

UNIT BLOCK-OFF PAN EL

OUTDOOR ACCESS PANEL

Fig. 22 -- Typical Access Panel Location (3--6 Ton)

DISCONNECT MOUNTING LOCATION

EMT OR RIGID CONDUIT (FIELD-SUPPLIED)

SINGLE POINT BOX

CENTER POST

MANUAL RESET LIMIT SWITCH

INDOOR ACCESS PAN EL

C08133

HEATER COVERS

50TC

RACEWAY

HOLE IN END PANEL (HIDDEN)

Fig. 21 -- Field Control Wiring Raceway

C08027

MAIN CONTROL BOX

BRACKET AND CONDUIT DRIP BOOT

SINGLE POINT BOX MOUNTING SCREW

CONTROL WIRE TERMINAL BLOCK

HEATER MODULE (LOCATION 1)

HEATER MODULE (LOCATION 2)

Fig. 23 -- Typical Component Location

HEATER MOUNTING BRACKET

C08134

TRACK

FLANGE

C08135

Fig. 24 -- Typical Module Installation

Single Point Boxes and Supplementary Fuses — When

the unit MOCP device value exceeds 60--A, unit--mounted supplementary fuses are required for each heater circuit. These fuses are included in accessory Single Point Boxes, with power distribution and fuse blocks. The single point box will be installed directly under the unit control box, just to the left of the partition separating the indoor section (with electric heaters) from the outdoor section. The Single Point Box has a hinged access cover. See Fig. 25. The Single Point Box also includes a set of power taps to complete the wiring between the Single Point Box and the unit’s main control box terminals. Refer to the accessory heater and Single Point Box installation instructions for details on tap connections.

All fuses on 50TC units are 60--A. (Note that all heaters are qualified for use with a 60--A fuse, regardless of actual heater ampacity, so only 60--A fuses are necessary.)

Single Point Boxes without Fuses — Unit heater applications not requiring supplemental fuses require a special Single Point Box without any fuses. The accessory Single Point Boxes contain a set of power taps to complete the wiring between the Single Point Box and the unit’s main control box terminals. Refer to accessory heater and Single Point Box installation instructions for details on tap connections.

CONTROL BOX

BUSHING

SINGLE POINT BOX MOUNTING SCREWS

DRIP BOOT BRACKET MOUNTING SCREWS

POWER WIRES

FOAM BUSHING

HEATER RELAYS

HEATER MOUNTING SCREWS

A L L

E D

C O R

P .

M O

D E

O .

O D

I A

N O.

2 2

. 2

ISTED

NDITIONING

UIP

ACCESS

4 6

/ N

5 6

10-

REV

C08136

Fig. 25 -- Typical Single Point Installation

Low--Voltage Control Connections — Pull the

low--voltage control leads from the heater module(s) -VIO and BRN (two of each if two modules are installed; identify for Module #1) -- to the 4--pole terminal board TB4 located on the heater bulkhead to the left of Heater #1. Connect the VIO lead from Heater #1 to terminal TB4--1. For 2 stage heating, connect the VIO lead from Heater #2 to terminal TB4--2. For 1 stage heating with 2 heater modules connect the VIO lead from both Heater #1 and #2 to terminal TB4--1. Connect both BRN leads to terminal TB4--3. See Fig. 26.

CTB

CONTL

BOARD

Field Connections

VIO

ORN

BRN

Plug Assembly

ORN VIO BRN

VIO BRN BRNVIO

50TC

Elec Htr

VIO BRN

HR1: Heater contactor, first-stage HR2: Heater contactor, second-stage

Fig. 26 -- Accessory Electric Heater Control

Connections

HR2

HR1

C09390

PremierLinkt (Factory--Option) —

50TC

C08199

Fig. 27 -- PremierLink Controller

The PremierLink controller (see Fig. 27) is compatible with Carrier Comfort Networkr (CCN) devices. This control is designed to allow users the access and ability to change factory--defined settings, thus expanding the function of the standard unit control board. CCN service access tools include System Pilot (TM), Touch Pilot (TM) and Service Tool. (Standard tier display tools Navigatort and Scrolling Marquee are not suitable for use with latest PremierLink controller (Version 2.x).)

The PremierLink control is factory--mounted in the 50TC unit’s main control box to the left of the Central Terminal Board (CTB). Factory wiring is completed through harnesses connected to the CTB pin connectors. Field connections are made at a 16--pole terminal block (TB1) located on the bottom shelf of the unit control box in front of the PremierLink controller. The factory--installed PremierLink control includes the supply--air temperature (SAT) sensor. The outdoor air temperature (OAT) sensor is included in the FIOP/accessory EconoMi$ert2 package.

The PremierLink controller requires the use of a Carrier electronic thermostat or a CCN connection for time broadcast to initiate its internal timeclock. This is necessary for broadcast of time of day functions (occupied/unoccupied).

NOTE: PremierLink controller is shipped in Sensor mode. To be used with a thermostat, the PremierLink controller must be configured to Thermostat mode. Refer to PremierLink Configuration instructions for Operating Mode.

Supply Air Temperature (SAT) Sensor — On FIOP--equipped 50TC unit, the unit is supplied with a supply--air temperature (SAT) sensor (33ZCSENSAT). This sensor is a tubular probe type, approx 152 mm (6--inches) in length. It is a nominal 10--k ohm thermistor.

The SAT is factory--wired. The SAT probe is wire--tied to the supply--air opening (on the horizontal opening end) in its shipping position. Remove the sensor for installation. Re--position the sensor in the flange of the supply--air opening or in the supply air duct (as required by local

codes). Drill or punch a 12.7 mm (

/2--in.) hole in the flange or duct. Use two field--supplied, self--drilling screws to secure the sensor probe in a horizontal orientation. See Fig. 28.

SUPPLY AIR TEMPERATURE SENSOR

SUPPLY AIR

RETURN AIR

ROOF CURB

C09059

Fig. 28 -- Typical Mounting Location for Supply Air

Temperature (SAT) Sensor on Small Rooftop Units

NOTE: Refer to Form 33CS--58SI for complete

PremierLink configuration, operating sequences and troubleshooting information. Have a copy of this manual available at unit start--up.

NOTE: The sensor must be mounted in the discharge airstream downstream of the cooling coil and any heating devices. Be sure the probe tip does not come in contact with any of the unit’s heater surfaces.

50TC

Fig. 29 -- PremierLink Wiring Schematic

C09460

Outdoor Air Temperature (OAT) Sensor — The OAT is factory--mounted in the EconoMi$er2 (FIOP or accessory). It is a nominal 10k ohm thermistor attached to an eyelet mounting ring.

EconoMi$er2 — The PremierLink control is used with EconoMi$er2 (option or accessory) for outdoor air management. The damper position is controlled directly by the PremierLink control; EconoMi$er2 has no internal logic device.

Outdoor air management functions can be enhanced with field--installation of these accessory control devices:

Enthalpy control (outdoor air or differential sensors) Space CO Outdoor air CO

sensor

Refer to Table 4 for accessory part numbers. Field connections — Field connections for accessory

sensor and input devices are made at the 16--pole terminal

50TC

Table 4 – PremierLink Sensor Usage

block (TB1) located on the control box bottom shelf in front of the PremierLink control (See Fig. 29). Some input devices also require a 24--vac signal source; connect at CTB terminal R at “THERMOSTAT” connection strip for this signal source. See connections figures on following pages for field connection locations (and for continued connections at the PremierLink board inputs).

Table 5 provides a summary of field connections for units equipped with Space Sensor. Table 6 provides a summary of field connections for units equipped with Space Thermostat.

Space Sensors -- The PremierLink controller is factory--shipped configured for Space Sensor Mode. A Carrier T--55 or T--56 space sensor must be used. T--55 space temperature sensor provides a signal of space temperature to the PremierLink control. T--56 provides same space temperature signal plus it allows for adjustment of space temperature setpoints from the face of the sensor by the occupants.

OUTDOOR AIR

APPLICATION

Differential Dry Bulb

Te mp e ra t ur e wi t h

PremierLink

(PremierLink requires

4 --- 2 0 m A A c t u a t o r )

Single Enthalpy with

PremierLink

(PremierLink requires

4 --- 2 0 m A A c t u a t o r )

Differential Enthalpy

with PremierLink

(PremierLink requires

4 --- 2 0 m A A c t u a t o r )

NOTES: CO

Sensors (Optional):

33ZCSENCO2 --- Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor. 33ZCASPCO2 --- Aspirator box used for duct---mounted CO 33ZCT55CO2 --- Space temperature and CO 33ZCT56CO2 --- Space temperature and CO

TEMPERATURE

SENSOR

I n c l u d e d ---

CRTEMPSN001A00

I n c l u d e d ---

Not Used

I n c l u d e d ---

Not Used

room sensor with override.

room sensor with override and setpoint.

RETURN AIR

TEMPERATURE

SENSOR

R e q u i r e d ---

33ZCT55SPT

or equivalent

---

room sensor.

OUTDOOR AIR

ENTHALPY SENSOR

--- ---

R e q u i r e s ---

HH57AC077

or equivalent

R e q u i r e s ---

HH57AC077

or equivalent

RETURN AIR

ENTHALPY SENSOR

---

R e q u i r e s --HH57AC078 or equivalent

Table 5 – Space Sensor Mode

TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL

1 T 5 5 --- S E N / T 5 6 --- S E N Analog (10k thermistor)

2 RMTOCC Discrete, 24VAC

3 T 5 5 --- S E N / T 5 6 --- S E N Analog (10k thermistor)

4 CMPSAFE Discrete, 24VAC

5 T56---SET Analog (10k thermistor)

6 FSD Discrete, 24VAC

7 LOOP---PWR Analog, 24VDC

8 SPS Discrete, 24VAC

9 IAQ ---SEN A n a l o g , 4 --- 2 0 m A

10 FILTER Discrete, 24VAC

11 I A Q --- C O M / O A Q --- C O M / R H --- C O M A n a l o g , 4 --- 2 0 m A

12 CCN + (RED) Digital,,5VDC

13 OAQ --- SEN/RH ---SEN A n a l o g , 4 --- 2 0 m A

14 CCN Gnd (WHT) Digital, 5VDC

16 CCN --- (BLK) Digital, 5VDC

LEGEND:

T 5 5 --- S p a c e Te m p e r a t u r e S e n s o r F S D --- F i r e S h u t d o w n T 5 6 --- S p a c e Te m p e r a t u r e S e n s o r I A Q --- I n d o o r A i r Q u a l i t y ( C O CCN --- Carrier Comfort Network (communication bus) OAQ --- Outdoor Air Quality (CO C M P S A F E --- C o m p r e s s o r S a f e t y R H --- R e l a t i v e H u m i d i t y F I L T E R --- D i r t y F i l t e r S w i t c h S F S --- S u p p l y F a n S t a t u s

50TC

)

Table 6 – Thermostat Mode

TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL

1 RAT SEN Analog (10k thermistor)

2 G Discrete, 24VAC

3 RAT SEN Analog (10k thermistor)

4 Y1 Discrete, 24VAC

6 Y2 Discrete, 24VAC

7 LOOP---PWR Analog, 24VDC

8 W1 Discrete, 24VAC

9 I A Q --- S E N Analog, 4 --- 20mA

10 W2 Discrete, 24VAC

11 I A Q --- C O M / O A Q --- C O M / R H --- C O M Analog, 4---20mA

12 CCN + (RED) Digital, 5VDC

13 O A Q --- S E N / R H --- S E N Analog, 4--- 20mA

14 CCN Gnd (WHT) Digital, 5VDC

16 CCN --- (BLK) Digital, 5VDC

LEGEND:

CCN --- Carrier Comfort Network (communication bus) RH --- Relative Humidity G --- Thermostat Fan W1 --- Thermostat Heat Stage 1 IAQ --- Indoor Air Quality (CO OAQ --- Outdoor Air Quality (CO RAT --- Return Air Temperature Y2 --- Thermostat Cool Stage 2

) W2 --- Thermostat Heat Stage 2

) Y1 --- Thermostat Cool Stage 1

TB1 PL

SEN J6-7

SW1

SEN

RED(+)

WHT(GND)

BLK(-)

BRN (GND)

BLU (SPT)

CCN COM

SENSOR WIRING

Fig. 30 -- T--55 Space Temperature Sensor Wiring

50TC

Connect T--55 -- See Fig. 30 for typical T--55 internal connections. Connect the T--55 SEN terminals to TB1 terminals 1 and 3 (see Fig. 31).

TB1 PL

SEN J6-7

SEN

Fig. 31 -- PremierLink T--55 Sensor

Connect T--56 -- See Fig. 32 for T--56 internal connections. Install a jumper between SEN and SET terminals as illustrated. Connect T--56 terminals to TB1 terminals 1, 3 and 5 (see Fig. 33).

J6-6

C08201

C08212

J6-6

SEN

TB1

Jumper

SET

J6-5

C08213

Fig. 33 -- PremierLink T--56 Sensor

Connect Thermostat — A 7--wire thermostat connection requires a 24--v power source and a common connection. Use the R and C terminals on the CTB’s THERMOSTAT connection strip for these. Connect the thermostat’s Y1, Y2, W1, W2 and G terminals to PremierLink TB1 as shown in Fig. 34.

If the 50TC unit is equipped with factory--installed smoke detector(s), disconnect the factory BLU lead at TB1--6 (Y2) before connecting the thermostat. Identify the BLU lead originating at CTB--DDC--1; disconnect at TB1--6 and tape off. Confirm that the second BLU lead at TB1--6 remains connected to PremierLink J4--8.

SPACE THERMOSTAT

GJ4-12

CTB THERMOSTAT

TB1

J4-10

J4-8

J4-6

SW1

Cool Warm

SEN

RED(+)

WHT(GND)

BLK(-)

SET

BLK (T56)

BRN (GND) BLU (SPT)

CCN COM

SENSOR WIRING

JUMPER TERMINALS AS SHOWN

Fig. 32 -- T--56 Internal Connections

C08202

CTB

J4-4

THERMOSTAT

C08119

Fig. 34 -- Space Thermostat Connections

If the 50TC unit has an economizer system and free--cooling operation is required, a sensor representing Return Air Temperature must also be connected (field--supplied and installed). This sensor may be a T--55 Space Sensor (see Fig. 29) installed in the space or in the return duct, or it may be sensor PNO 33ZCSENSAT, installed in the return duct. Connect this sensor to TB1--1 and TB1--3 per Fig. 31.

Configure the unit for Thermostat Mode — Connect to the CCN bus using a CCN service tool and navigate to PremierLink Configuration screen for Operating Mode. Default setting is Sensor Mode (value 1). Change the value to 0 to reconfigure the controller for Thermostat Mode.

When the PremierLink is configured for Thermostat Mode, these functions are not available: Fire Shutdown (FSD), Remote Occupied (RMTOCC), Compressor Safety (CMPSAFE), Supply Fan Status (SFS), and Filter Pressure Switch (FILTER).

Economizer controls —

Outdoor Air Enthalpy Control (PNO HH57AC077) -The enthalpy control (HH57AC077) is available as a

field--installed accessory to be used with the EconoMi$er2 damper system. The outdoor air enthalpy sensor is part of the enthalpy control. (The separate field--installed accessory return air enthalpy sensor (HH57AC078) is required for differential enthalpy control. See Fig. 35.)

Locate the enthalpy control in the economizer hood. Locate two GRA leads in the factory harness and connect these leads to enthalpy control sensors 2 and 3. See Fig. 35. Connect the enthalpy control power input terminals to economizer actuator power leads RED (connect to TR) and BLK (connect to TR1).

Enthalpy Switch

GRA

CTB ECON

Factory Wiring Harness

C08218

Fig. 35 -- Enthalpy Switch (HH57AC077) Connections

The outdoor enthalpy changeover setpoint is set at the enthalpy controller.

Differential Enthalpy Control — Differential enthalpy control is provided by sensing and comparing the outside air and return air enthalpy conditions. Install the outdoor air enthalpy control as described above. Add and install a return air enthalpy sensor.

Return Air Enthalpy Sensor — Mount the return--air enthalpy sensor (HH57AC078) in the return--air duct. The return air sensor is wired to the enthalpy controller (HH57AC077). See Fig. 36.

ENTHALPY CONTROLLER

TR TR1

LED

NOTES:

1. Remove factory-installed jumper across SR and + before connecting wires from return air sensor.

2. Switches shown in high outdoor air enthalpy state. Terminals 2 and 3 close on low outdoor air enthalpy relative to indoor air enthalpy.

3. Remove sensor mounted on back of control and locate in outside airstream.

RED

BRN

BLK

3 1

RED

GRAY/ORN

GRAY/RED

WIRE HARNESS IN UNIT

(OUTDOOR

AIR

ENTHALPY

SENSOR)

(RETURN AIR

ENTHALPY

SENSOR)

C06019

Fig. 36 -- Outside and Return Air Enthalpy Sensor

Wiring

To wire the return air enthalpy sensor, perform the following:

1. Use a 2--conductor, 18 or 20 AWG, twisted pair cable to connect the return air enthalpy sensor to the enthalpy controller.

2. At the enthalpy control remove the factory--installed resistor from the (SR) and (+) terminals.

3. Connect the field--supplied RED wire to (+) spade connector on the return air enthalpy sensor and the (SR+) terminal on the enthalpy controller. Connect the BLK wire to (S) spade connector on the return air enthalpy sensor and the (SR) terminal on the enthalpy controller.

NOTE: The enthalpy control must be set to the “D” setting for differential enthalpy control to work properly.

Indoor Air Quality (CO

sensor) — The indoor air quality

sensor accessory monitors space carbon dioxide (CO levels. This information is used to monitor IAQ levels. Several types of sensors are available, for wall mounting in the space or in return duct, with and without LCD display, and in combination with space temperature sensors. Sensors use infrared technology to measure the levels of CO

The CO

present in the space air.

sensors are all factory set for a range of 0 to

2000 ppm and a linear mA output of 4 to 20. Refer to the instructions supplied with the CO

sensor for electrical

requirements and terminal locations. See Fig. 37 for typical CO

sensor wiring schematic.

50TC

)

0-10VDC

SIG COM

4-20mA

NC COM NO

24 VAC

24 VDC

J3 J4

50TC

Fig. 37 -- Indoor/Outdoor Air Quality (CO2)Sensor

(33ZCSENCO2) -- Typical Wiring Diagram

To accurately monitor the quality of the air in the conditioned air space, locate the sensor near a return--air grille (if present) so it senses the concentration of CO leaving the space. The sensor should be mounted in a location to avoid direct breath contact.

Do not mount the IAQ sensor in drafty areas such as near supply ducts, open windows, fans, or over heat sources. Allow at least 0.9 m (3 ft) between the sensor and any corner. Avoid mounting the sensor where it is influenced by the supply air; the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air does not have a chance to mix with the room air before it is drawn into the return airstream.

Wiring the Indoor Air Quality Sensor —

For each sensor, use two 2--conductor 18 AWG (American Wire Gage) twisted--pair cables (unshielded) to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the control board terminals.

ALARM RELAY

}

CONTACTS

C08635

Refer to Form 33CS--58SI, PremierLink Installation, Start--up, and Configuration Instructions, for detailed configuration information

Outdoor Air Quality Sensor (PNO 33ZCSENCO2 plus weatherproof enclosure) — The outdoor air CO designed to monitor carbon dioxide (CO outside ventilation air and interface with the ventilation damper in an HVAC system. The OAQ sensor is packaged with an outdoor cover. See Fig. 39. The outdoor air CO sensor must be located in the economizer outside air hood.

COVER REMOVED SIDE VIEW

Fig. 39 -- Outdoor Air Quality Sensor Cover

Wiring the Outdoor Air CO

Sensor — A dedicated power

supply is required for this sensor. A two--wire cable is required to wire the dedicated power supply for the sensor. The two wires should be connected to the power supply and terminals 1 and 2.

To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the OAQ sensor. See Fig. 37. Connect the 4 to 20 mA terminal to the TB1--13 terminal of the 50TC. Connect the SIG COM terminal to the TB1--11 terminal of the 50TC. See Fig. 40.

sensor is

) levels in the

C07135

To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the sensor. See Fig. 37. Connect the 4--20 mA terminal to terminal TB1--9 and connect the SIG COM terminal to terminal TB1--11. See Fig. 38.

IAQ Sensor

SEN J5-5

COM

24 VAC

TB1

J5-3

C08636

Fig. 38 -- Indoor CO2Sensor (33ZCSENCO2)

Connections

OAQ Sensor/RH Sensor

SEN J5-2

COM

24 VAC

TB1

J5-3

C08275

Fig. 40 -- Outdoor CO2Sensor Connections

Fire Shutdown (FSD) — This function is available only when PremierLink is configured for (Space) Sensor Mode. The unit is factory--wired for PremierLink FSD operation when PremierLink is factory--installed.

Filter Status Switch — This function is available only when PremierLink is configured for (Space) Sensor Mode.

PremierLink control can monitor return filter status in two ways: By monitoring a field--supplied/installed filter pressure switch or via supply fan runtime hours.

Occupied mode. This function may also provide a “Door Switch” time delay function that will terminate cooling and heating functions after a 2--20 minute delay.

Using switch input: Install the dirty filter pressure switch according to switch manufacturer’s instructions, to measure pressure drop across the unit’s return filters. Connect one side of the switch’s NO contact set to CTB’s THERMOSTAT--R terminal. Connect the other side of the NO contact set to TB1--10. Setpoint for Dirty Filter is set at the switch. See Fig. 41.

Filter Switch (NO, close on rising pressure (high drop))

CTB

Thermostat

TB1

J4-4

C08216

Fig. 41 -- PremierLink Filter Switch Connection

When the filter switch’s NO contact set closes as filter pressure drop increases (indicating dirt--laden filters), the input signal to PremierLink causes the filter status point to read “DIRTY”.

Using Filter Timer Hours: Refer to Form 33CS--58SI for instructions on using the PremierLink Configuration screens and on unit alarm sequence.

Connect one side of the NO contact set on the timeclock to CTB’s THERMOSTAT--R terminal. Connect the other side of the timeclock contact to the unit’s TB1--2 terminal.

Remote Occupied

Time Clock

CTB

Thermostat

TB1

J4-12

C08214

Fig. 43 -- PremierLink Wiring Remote Occupied

Refer to Form 33CS--58SI for additional information on configuring the PremierLink control for Door Switch timer function.

Space Relative Humidity Sensor — The RH sensor is not used with these 50Hz 50TC models at this time.

CCN Communication Bus — The PremierLink controller connects to the bus in a daisy chain arrangement. Negative pins on each component must be connected to respective negative pins, and likewise, positive pins on each component must be connected to respective positive pins. The controller signal pins must be wired to the signal ground pins. Wiring connections for CCN must be made at the 3--pin plug.

50TC

Supply Fan Status Switch — The PremierLink control can monitor supply fan operation through a field--supplied/installed differential pressure switch. This sequence will prevent (or interrupt) operation of unit cooling, heating and economizer functions until the pressure switch contacts are closed indicating proper supply fan operation.

Install the differential pressure switch in the supply fan section according to switch manufacturer’s instructions. Arrange the switch contact to be open on no flow and to close as pressure rises indicating fan operation.

Connect one side of the switch’s NO contact set to CTB’s THERMOSTAT--R terminal. Connect the other side of the NO contact set to TB1--8. Setpoint for Supply Fan Status is set at the switch. See Fig. 42.

Fan (Pressure) Switch (NO, close on rise in pressure)

CTB

Thermostat

TB1

J4-6

C08118

Fig. 42 -- PremierLink Wiring Fan Pressure Switch

Connection

At any baud (9600, 19200, 38400 baud), the number of controllers is limited to 239 devices maximum. Bus length may not exceed 1219 m (4000 ft), with no more than 60 total devices on any 305 m (1000--ft) section. Optically isolated RS--485 repeaters are required every 305 m (1000 ft).

NOTE: Carrier device default is 9600 band. COMMUNICATION BUS WIRE SPECIFICATIONS —

The CCN Communication Bus wiring is field--supplied and field--installed. It consists of shielded 3--conductor cable with drain (ground) wire. The cable selected must be identical to the CCN Communication Bus wire used for the entire network.

See Table 7 for recommended cable.

Table 7 – Recommended Cables

MANUFACTURER CABLE PART NO.

Alpha 2413 or 5463

American A22503

Belden 8772

Columbia 02525

Remote Occupied Switch — The PremierLink control permits a remote timeclock to override the control’s on--board occupancy schedule and place the unit into

NOTE: Conductors and drain wire must be at least 20 AWG, stranded, and tinned copper. Individual conductors must be insulated with PVC, PVC/nylon, vinyl, Teflon, or polyethylene. An aluminum/polyester 100% foil shield and an outer jacket of PVC, PVC/nylon, chrome vinyl, or Teflon with a minimum operating temperature range of

-- 2 0 _Cto60_C(--4_F to 140_F) is required. Do not run communication wire in the same conduit as or next to any AC voltage wiring.

The communication bus shields must be tied together at each system element. If the communication bus is entirely within one building, the resulting continuous shield must be connected to ground at only one single point. If the communication bus cable exits from one building and enters another building, the shields must be connected to the grounds at a lightning suppressor in each building (one point only).

Connecting CCN bus:

50TC

NOTE: When connecting the communication bus cable, a color code system for the entire network is recommended to simplify installation and checkout. See Table 8 for the recommended color code.

Table 8 – Color Code Recommendations

SIGNAL TYPE

+ Red 1

Ground White 2

--- Black 3

CCN BUS WIRE

COLOR

CCN PLUG PIN

NUMBER

Connect the CCN (+) lead (typically RED) to the unit’s TB1--12 terminal. Connect the CCN (ground) lead (typically WHT) to the unit’s TB1--14 terminal. Connect the CCN (--) lead (typically BLK) to the unit’s TB1--16 terminal. See Fig. 44.

CCN Bus

+ (RED)

GND (WHT)

– (BLK)

TB1

J2-1

J2-2

J2-3

C08276

Fig. 44 -- PremierLink CCN Bus Connections

RTU--MP control system

The RTU--MP controller, see Fig. 45, provides expanded stand--alone operation of the HVAC system plus connection and control through communication with several Building Automation Systems (BAS) through popular third--party network systems. The available network systems are BACnet MP/TP, Modbus and Johnson J2. Communication with LonWorks is also possible by adding an accessory interface card to the RTU--MP. Selection of the communication protocol and baud rate are made at on--board DIP switches.

The RTU--MP control is factory--mounted in the 50TC unit’s main control box, to the left of the CTB. See Fig. 46. Factory wiring is completed through harnesses connected to the CTB. Field connections for RTU--MP sensors will be made at the Phoenix connectors on the RTU--MP board. The factory--installed RTU--MP control includes the supply--air temperature (SAT) sensor. The outdoor air temperature (OAT) sensor is included in the FIOP/accessory EconoMi$er2 package.

Refer to Table 9, RTU--MP Controller Inputs and Outputs for locations of all connections to the RTU--MP board.

50TC

Fig. 45 -- RTU--MP Multi--Protocol Control Board

CTB

RTU-MP Board

Fig. 46 -- 50TC Control Box Component Locations

C07129

C08585

50TC

Fig. 47 -- RTU--MP System Control Wiring Diagram

C09461

Table 9 – RTU--MP Controller Inputs and Outputs

POINT NAME

Space Temperature Sensor sptsens AI (10K Thermistor) J 2 0 --- 1 , 2 Supply Air Temperature sat AI (10K Thermistor) J2---1, 2 Local Outside Air Temperature Sensor oatsens AI (10K Thermistor) J2--- 3, 4 Space Temperature Offset Pot sptopot AI (100K Potentiometer) J 2 0 --- 3 Indoor Air Quality iaq A I ( 4 --- 2 0 m a ) J4---2, 3 Outdoor Air Quality oaq A I ( 4 --- 2 0 m a ) J4---5, 6 Safety Chain Feedback safety DI (24 VAC) J1---9 Compressor Safety compstat DI (24 VAC) J1---2 Fire Shutdown firedown DI (24 VAC) J 1 --- 1 0 Enthalpy Switch enthalpy DI (24 VAC) J2---6, 7 Humidistat Input Status humstat DI (24 VAC) J5---7, 8

50TC

Space Relative Humidity sprh A I ( 4 --- 2 0 m a )

Outside Air Relative Humidity oarh A I ( 4 --- 2 0 m a )

Supply Fan Status fanstat DI (24 VAC)

Filter Status filtstat DI (24 VAC)

Remote Occupancy Input remocc DI (24 VAC)

Economizer Commanded Position econocmd 4 --- 20ma J2---5 SupplyFanRelayState sf DO Relay (24VAC , 1A) J1 ---4 Compressor 1 Relay State comp_1 DO Relay (24VAC , 1A) J1---8 Compressor 2 Relay State comp_2 DO Relay (24VAC , 1A) J1---7 Heat Stage 1 Relay State heat_1 DO Relay (24VAC , 1A) J1 ---6 Heat Stage 2 Relay State heat_2 DO Relay (24VAC , 1A) J1 ---5 Power Exhaust Relay State aux_2 DO Relay (24VAC , 1A) J 1 1 --- 3 Dehumidification Relay State humizer DO Relay (24VAC, 1A) J 1 1 --- 7 , 8

LEGEND AI --- A n a l o g I n p u t AO --- A n a l o g O u t p u t DI --- D i s c r e t e I n p u t DO --- Discrete Output

* These inputs (if installed) take the place of the default input on the specific channel according to schematic. P a r a l l e l p i n s J 5 --- 1 = J 2 --- 6 , J 5 --- 3 = J 1 --- 1 0 , J 5 --- 5 = J 1 --- 2 a r e u s e d f o r f i e l d --- i n s t a l l a t i o n .

BACnet OBJECT

NAME

INPUTS

CONFIGURABLE INPUTS*

OUTPUTS

TYPE OF I/O

CONNECTION PIN

NUMBERS

J 4 --- 2 , 3 o r J 4 --- 5 , 6

J5--- 1,2 or J5 ---3,4 or

J5 5,6 or J5 --- 7,8

The RTU--MP controller requires the use of a Carrier space sensor. A standard thermostat cannot be used with the RTU--MP system.

Supply Air Temperature (SAT) Sensor -- On FIOP--equipped 50TC unit, the unit is supplied with a supply--air temperature (SAT) sensor (33ZCSENSAT). This sensor is a tubular probe type, approx 152 mm (6--inches) in length. It is a nominal 10--k ohm thermistor.

codes). Drill or punch a 12.7 m

/2--in.) hole in the flange or duct. Use two field--supplied, self--drilling screws to secure the sensor probe in a horizontal orientation. See Fig. 28.

Outdoor Air Temperature (OAT) Sensor -- The OAT is factory--mounted in the EconoMi$er2 (FIOP or accessory). It is a nominal 10k ohm thermistor attached to an eyelet mounting ring.

EconoMi$er2 -- The RTU--MP control is used with EconoMi$er2 (option or accessory) for outdoor air management. The damper position is controlled directly by the RTU--MP control; EconoMi$er2 has no internal logic device.

Outdoor air management functions can be enhanced with field--installation of these accessory control devices:

Enthalpy control (outdoor air or differential sensors) Space CO Outdoor air CO

sensor

Field Connections -- Field connections for accessory sensors and input devices are made the RTU--MP, at plugs J1, J2, J4, J5, J11 and J20. All field control wiring that connects to the RTU--MP must be routed through the raceway built into the corner post as shown in Fig. 22. The raceway provides the UL required clearance between high-- and low--voltage wiring. Pass the control wires through the hole provided in the corner post, then feed the wires thorough the raceway to the RTU--MP. Connect to the wires to the removable Phoenix connectors and then reconnect the connectors to the board.

Connect T--59 -- The T--59 space sensor requires a separate, isolated power supply of 24 VAC. See Fig. 49 for internal connections at the T--59. Connect the SEN terminal (BLU) to RTU--MP J20--1. Connect the COM terminal (BRN) to J20--2. Connect the SET terminal (STO or BLK) to J20--3.

BRN (COM)

BLK (STO)

BLU (SPT)

SENSOR

WIRING

Space Temperature (SPT) Sensors

A field--supplied Carrier space temperature sensor is required with the RTU--MP to monitor space temperature. There are 3 sensors available for this application:

S 33ZCT55SPT, space temperature sensor with override

button

50TC

S 33ZCT56SPT, space temperature sensor with override

button and setpoint adjustment

S 33ZCT59SPT, space temperature sensor with LCD

(liquid crystal display) screen, override button, and setpoint adjustment

Use 20 gauge wire to connect the sensor to the controller. The wire is suitable for distances of up to 500 ft. Use a three--conductor shielded cable for the sensor and setpoint adjustment connections. If the setpoint adjustment (slidebar) is not required, then an unshielded, 18 or 20 gauge, two--conductor, twisted pair cable may be used.

Connect T--55 -- See Fig. 30 for typical T--55 internal connections. Connect the T--55 SEN terminals to RTU--MP J20--1 and J20--2. See Fig. 48.

SEN

J20-1

OR SET SEN

OPB COM- PWR+

POWER

24 VAC

NOTE: Must use a separate isolated transformer.

WIRING

C07132

Fig. 50 -- Space Temperature Sensor Typical Wiring

(33ZCT59SPT)

Economizer controls — Outdoor Air Enthalpy Control (PNO HH57AC077) -The enthalpy control (HH57AC077) is available as a

SEN

J20-2

C08460

Fig. 48 -- RTU--MP T--55 Sensor Connections

Connect T--56 -- See Fig. 32 for T--56 internal connections. Install a jumper between SEN and SET terminals as illustrated. Connect T--56 terminals to RTU--MP J20--1, J20--2 and J20--3 per Fig. 49.

SEN J20-1

SEN

Jumper

SET

J20-2

J20-3

C08461

Fig. 49 -- RTU--MP T--56 Sensor Connections

The outdoor enthalpy changeover setpoint is set at the enthalpy controller.

Return Air Enthalpy Sensor — Mount the return--air enthalpy sensor (HH57AC078) in the return--air duct. The return air sensor is wired to the enthalpy controller (HH57AC077). See Fig. 36.

To wire the return air enthalpy sensor, perform the following:

1. Use a 2--conductor, 18 or 20 AWG, twisted pair cable to connect the return air enthalpy sensor to the enthalpy controller.

2. At the enthalpy control remove the factory--installed resistor from the (SR) and (+) terminals.

NOTE: The enthalpy control must be set to the “D” setting for differential enthalpy control to work properly.

Indoor Air Quality (CO

sensor) — The indoor air quality

The CO

present in the space air.

sensors are all factory set for a range of 0 to

2000 ppm and a linear mA output of 4 to 20. Refer to the instructions supplied with the CO

sensor for electrical

requirements and terminal locations. See Fig. 37 for typical CO

sensor wiring schematic.

IAQ Sensor

SEN

COM

J4-2

J4-3

24 VAC

C08462

Fig. 51 -- RTU--MP / Indoor CO2Sensor

(33ZCSENCO2) Connections

Outdoor Air Quality Sensor (PNO 33ZCSENCO2 plus weatherproof enclosure) — The outdoor air CO designed to monitor carbon dioxide (CO

sensor is

) levels in the

outside ventilation air and interface with the ventilation damper in an HVAC system. The OAQ sensor is packaged with an outdoor cover. See Fig. 39. The outdoor air CO sensor must be located in the economizer outside air hood.

)

Wiring the Outdoor Air CO

Sensor — A dedicated power

50TC

supply is required for this sensor. A two--wire cable is required to wire the dedicated power supply for the sensor. The two wires should be connected to the power supply and terminals 1 and 2.

To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the OAQ sensor. See Fig. 37. Connect the 4 to 20 mA terminal to RTU--MP J4--5. Connect the SIG COM terminal to RTU--MP J4--6.

Do not mount the IAQ sensor in drafty areas such as near supply ducts, open windows, fans, or over heat sources. Allow at least 3 ft (0.9 m) between the sensor and any corner. Avoid mounting the sensor where it is influenced by the supply air; the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air does not have a chance to mix with the room air before it is drawn into the return airstream.

Wiring the Indoor Air Quality Sensor — For each sensor, use two 2--conductor 18 AWG (American

Wire Gage) twisted--pair cables (unshielded) to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the RTU--MP control board terminals.

To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the sensor. See Fig. 36. Connect the 4--20 mA terminal to RTU--MP J4--2 and connect the SIG COM terminal to RTU--MP J4--3. See Fig. 51.

OAQ Sensor/RH Sensor

24 VAC

SEN

COM

Fig. 52 -- RTU--MP / Outdoor CO2Sensor

(33ZCSENCO2) Connections

Connecting Discrete Inputs

Status

Filter

The filter status accessory is a field--installed accessory. This accessory detects plugged filters. When installing this accessory, the unit must be configured for filter status

→

by setting MENU to Filter Status and normally open (N/O) or normally closed (N/C). Input 8 or 9 is recommended for easy of installation. Refer to Fig. 45 and Fig. 47 for wire terminations at J5.

Config→Inputs→input3,5,8,or9

J4-5

J4-6

C08463

Fan Status

Communication Wiring -- Protocols

The fan status accessory is a field--installed accessory. This accessory detects when the indoor fan is blowing air. When installing this accessory, the unit must be configured for fan status by setting

→

Config→Inputs→input3,5,8,or9to Fan

Status and normally open (N/O) or normally closed (N/C). Input 8 or 9 is recommended for easy of installation. Refer to Fig. 45 and Fig. 47 for wire terminations at J5.

Remote Occupancy

The remote occupancy accessory is a field--installed accessory. This accessory overrides the unoccupied mode and puts the unit in occupied mode. When installing this accessory, the unit must be configured for remote

→

occupancy by setting MENU 5, 8, or 9 to Remote Occupancy and normally open (N/O)

50TC

or normally closed (N/C).

→

Also set MENU

Schedules→occupancy source to DI

on/off. Input 8 or 9 is recommended for easy of installation. Refer to Fig. 45 and Table 9 for wire terminations at J5.

Space Relative Humidity Sensor -- The RH sensor is not used with these 50Hz 50TC models at this time.

Config→Inputs→input 3,

General

Protocols are the communication languages spoken by control devices. The main purpose of a protocol is to communicate information in the most efficient method possible. Different protocols exist to provide different kinds of information for different applications. In the BAS application, many different protocols are used, depending on manufacturer. Protocols do not change the function of a controller; just make the front end user different.

The RTU--MP can be set to communicate on four different protocols: BACnet, Modbus, N2, and LonWorks. Switch 3 (SW3) on the board is used to set protocol and baud rate. Switches 1 and 2 (SW1 and SW2) are used to set the board’s network address. See Fig. 53 for the switch setting per protocol. The 3rd party connection to the RTU--MP is through plug J19.

NOTE: Power must be cycled after changing the SW1--3 switch settings.

Refer to the RTU--MP 3rd Party Integration Guide for more detailed information on protocols, 3rd party wiring, and networking.

SW3 Protocol Selection

PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1

BACnet MS/TP (Master)

Modbus (Slave)

N2 (Slave)

LonWorks Unused ON ON OFF ON OFF OFF OFF

NOTE: DS = Dip Switch BACnet MS/TP SW3 example shown

BAUD RATE DS2 DS1

9600 OFF OFF

19,200 ON OFF

38,400 OFF ON

76,800 ON ON

Unused OFF OFF OFF ON OFF Select Baud Select Baud

Unused OFF OFF ON ON OFF Select Baud Select Baud

Unused OFF OFF OFF ON ON OFF OFF

Baud Rate Selections

Fig. 53 -- RTU--MP SW3 Dip Switch Settings

C07166

Local Access

BACview6Handheld

The BACview6is a keypad/display interface used to connect to the RTU--MP to access the control information, read sensor values, and test the RTU, see Fig. 54. This is an accessory interface that does not come with the MP controller and can only be used at the unit. Connect the BACview are 2 password protected levels in the display (User and Admin). The user password is defaulted to 0000 but can be changed. The Admin password is 1111 and cannot be changed. There is a 10 minute auto logout if a screen is idle. See Form 48--50H--T--2T, Appendix A for navigation and screen content.

Virtual BACview

Virtual BACview is a freeware computer program that functions as the BACview

to the RTU--MP’s J12 local access port. There

Handheld. The USB Link

interface (USB--L) is required to connect a computer to the RTU--MP board. The link cable connects a USB port to the J12 local access port. This program functions and operates identical to the handheld.

RTU--MP Troubleshooting

Communication

The LEDs indicate if the controller is speaking to the devices on the network. The LEDs should reflect communication traffic based on the baud rate set. The higher the baud rate the more solid the LEDs will appear. See Table 10 for further details.

LEDs

50TC

Fig. 54 -- BACview6Handheld Connections

C07170

Table 10 – LEDs

The LEDs on the RTU--MP show the status of certain functions

If this LED is on... Status is...

Power The RTU MP has power

Rx The RTU MP is receiving data from the network segment

Tx The RTU MP is transmitting data over the network segment DO# The digital output is active

The Run and Error LEDs indicate control module and network status

If Run LED shows...

2 flashes per second Off Normal

2 flashes per second

50TC

2 flashes per second On

5 flashes per second On Exec start --- up aborted, Boot is running

5 flashes per second Off Firmware transfer in progress, Boot is running

7 flashes per second

14 flashes per second

On On

And Error LED shows... Status is...

2flashes, alternating with Run LED

3flashes, then off

4flashes, then pause

7 flashes per second, alternating with Run LED

14 flashes per second, alternating with Run LED

Five minute auto---restart delay after system error

Control module has just been formatted

Two or more devices on this network have the same ARC156 network address

Exec halted after frequent system errors or control programs halted

Ten second recovery period after brownout

Brownout

Failure. Try the following solutions:

S Turn the RTU --- MP off, then on. S F o r m a t t h e R T U --- M P. S Download memory to the RTU---MP. S Replace the RTU---MP.

NOTE: Refer to Form 48--50H--T--2T for complete configuration of RTU--MP, operating sequences and troubleshooting information. Refer to RTU--MP 3rd Party Integration Guide for details on configuration and troubleshooting of connected networks. Have a copy of these manuals available at unit start--up.

50TC

Economizer 2 Position

Fig. 55 -- EconoMi$ert IV Wiring

Step 11 — Adjust Factory--Installed Options

EconoMi$er IV Occupancy Switch —

Refer to Fig. 55 for general EconoMi$er IV wiring. External occupancy control is managed through a connection on the Central Terminal 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 on CTB. Remove or cut jumper JMP 2 to complete the installation.

Step 12 — Install Accessories

Available accessories include:

Roof Curb Thru--base connection kit (must be installed before unit

is set on curb) Manual outside air damper Two--Position motorized outside air damper EconoMi$er IV (with control and integrated barometric

relief) EconoMi$er2 (without control/for external signal and

integrated barometric relief)

Power

Exhaust

Damper

Unit Without Economizer

or 2 Position Damper

C09382

Differential dry--bulb sensor (EconoMi$er IV) Outdoor enthalpy sensor Differential enthalpy sensor Electric Heaters Single Point kits Low Ambient Controls Thermostat / Sensors

sensor

DDC interface (PremierLink) Louvered hail guard Phase monitor control Winter Start kit

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

Pre--Start and Start--Up

This completes the mechanical installation of the unit. Refer to the unit’s Service Manual for detailed Pre--Start and Start--up instructions.

Table 11 – Unit Wire/MOCP Sizing Data

ELECTRIC HEATER

UNIT

50TC*A07

IFM

TYPE

CRHEATER***A00

N O M . V --- P H --- H Z

CRHEATER106A00

CRHEATER108A00

STD

CRHEATER109A00

CRHEATER108A00,108A00

CRHEATER108A00,109A00

4 0 0 --- 3 --- 5 0

CRHEATER106A00

CRHEATER108A00

HIGH

CRHEATER109A00

CRHEATER108A00,108A00

CRHEATER108A00,109A00

CRHEATER116A00

CRHEATER113A00

STD

CRHEATER114A00

CRHEATER115A00

CRHEATER114A00,116A00

Nom (kW)

--- --- 15.4 25 15 75

6.0 6.0 15.4 25 15 75

11.5 11.5 17.6 25 16 75

14.0 14.0 20.8 25 19 75

23.1 23.1 32.1 35 30 75

25.6 25.6 35.3 40 32 75

--- --- 16.2 25 16 94

6.0 6.0 16.2 25 16 94

11.5 11.5 18.6 25 17 94

14.0 14.0 21.8 25 20 94

23.1 23.1 33.1 35 30 94

25.6 25.6 36.3 40 33 94

--- --- 17.5 20 18 99

13.9 13.9 20.6 25 19 99

16.5 16.5 23.9 25 22 99

27.9 27.9 38.1 40 35 99

33.1 33.1 44.6 45 41 99

41.8 41.8 55.5 60 51 99

--- --- 18.3 20 19 118

FLA MCA MOCP

DISC. SIZE

FLA LRA

50TC

CRHEATER116A00

MED

50TC*D08

4 0 0 --- 3 --- 5 0

HIGH

CRHEATER113A00

CRHEATER114A00

CRHEATER115A00

CRHEATER114A00,116A00

CRHEATER116A00

CRHEATER113A00

CRHEATER114A00

CRHEATER115A00

CRHEATER114A00,116A00

NOTE: See page 38 for table legend and notes.

13.9 13.9 21.6 25 20 118

16.5 16.5 24.9 25 23 118

27.9 27.9 39.1 40 36 118

33.1 33.1 45.6 50 42 118

41.8 41.8 56.5 60 52 118

--- --- 22.7 30 24 171

13.9 13.9 26.6 30 24 171

16.5 16.5 29.9 30 27 171

27.9 27.9 44.1 45 41 171

33.1 33.1 50.6 60 47 171

41.8 41.8 61.5 70 57 171

Table 11 – Unit Wire/MOCP Sizing Data (cont)

ELECTRIC HEATER

50TC

IFM

UNIT

50TC*D09

TYPE

CRHEATER***A00

N O M . V --- P H --- H Z

CRHEATER116A00

CRHEATER113A00

STD

CRHEATER114A00

CRHEATER115A00

CRHEATER114A00,116A00

CRHEATER116A00

CRHEATER113A00

MED

CRHEATER114A00

4 0 0 --- 3 --- 5 0

CRHEATER115A00

CRHEATER114A00,116A00

CRHEATER116A00

CRHEATER113A00

HIGH

CRHEATER114A00

CRHEATER115A00

CRHEATER114A00,116A00

Nom (kW)

--- --- 17.5 20 18 108

13.9 13.9 20.6 25 19 108

16.5 16.5 23.9 25 22 108

27.9 27.9 38.1 40 35 108

33.1 33.1 44.6 45 41 108

41.8 41.8 55.5 60 51 108

--- --- 17.5 20 18 114

13.9 13.9 20.6 25 19 114

16.5 16.5 23.9 25 22 114

27.9 27.9 38.1 40 35 114

33.1 33.1 44.6 45 41 114

41.8 41.8 55.5 60 51 114

--- --- 19.3 25 20 172

13.9 13.9 22.9 25 21 172

16.5 16.5 26.1 30 24 172

27.9 27.9 40.4 45 37 172

33.1 33.1 46.9 50 43 172

41.8 41.8 57.8 60 53 172

--- --- 21.6 25 23 123

FLA MCA MOCP

DISC. SIZE

FLA LRA

CRHEATER116A00

STD

MED

50TC*D12

4 0 0 --- 3 --- 5 0

HIGH

CRHEATER113A00

CRHEATER115A00

CRHEATER114A00,116A00

CRHEATER115A00,113A00

CRHEATER116A00

CRHEATER113A00

CRHEATER115A00

CRHEATER114A00,116A00

CRHEATER115A00,113A00

CRHEATER116A00

CRHEATER113A00

CRHEATER115A00

CRHEATER114A00,116A00

CRHEATER115A00,113A00

13.9 13.9 21.6 25 23 123

16.5 16.5 23.9 25 23 123

33.1 33.1 44.6 45 41 123

41.8 41.8 55.5 60 51 123

50.1 50.1 53.4 60 61 123

--- --- 23.4 30 25 181

13.9 13.9 23.4 30 25 181

16.5 16.5 26.1 30 25 181

33.1 33.1 46.9 50 43 181

41.8 41.8 57.8 60 53 181

50.1 50.1 55.6 60 63 181

--- --- 26.4 30 28 189

13.9 13.9 26.6 30 28 189

16.5 16.5 29.9 30 28 189

33.1 33.1 50.6 60 47 189

41.8 41.8 61.5 70 57 189

50.1 50.1 59.4 70 66 189

NOTE: See page 38 for table legend and notes.

Legend for Table 11

LEGEND:

DISC --- Disconnect FLA --- Full load amps IFM --- Indoor fan motor LRA --- Locked rotor amps MCA --- Minimum circuit amps MOCP --- Maximum over current protection

50TC

Manufacturer reserves the r ight to change, at any time, specifications and designs without notice and without obligations.

Catalog No: 50TC --- C02SI

Replaces: NEW

Carrier 50TC User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual