Carrier 50TCQA - page 16

TRACK

FLANGE

C08135

Fig. 25 --Typical Module Insta llation

Single Point Boxes and Supple mentary Fuses — When

the unit MOCPdevice value exceeds 60--A,unit--mounted

supplementary fuses are required for each heater circuit.

These fusesare 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. 26. The Single Point Box also includes pigtails to

complete the wiringbetween 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.

ALLIED PA

MODEL NO.

ERIAL NO.

CORP

11 13

21 23

22.2

ISTED AIR

NDITIONING

UIP ACCESS

346N

P / N

2-5610-4

REV

1113

2123

CONTROL

BOX

BUSHING

SINGLE

POINT BOX

MOUNTING

SCREWS

FOAM

BUSHING

DRIP BOOT

BRACKET

MOUNTING

SCREWS

HEATER

RELAYS

POWER

WIRES

HEATER

MOUNTING

SCREWS

C08136

Fig. 26 --Typical Single Point Installation

All fuses on 50TCQunits are 60--A. (Note that all heaters

are qualified for use with a 60--Afuse, regardless of actual

heater ampacity,so only 60--Afuses are necessary.)

Single Point Boxes without Fuses — Refer to accessory

heater and Single Point Box installation instructions for

details on tap connections.

Low--Voltage Control Connections — Run 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 ofHeater

#1. Connect the VIOleads from Heater #1 and Heater #2

to terminal TB4--1.Connect the BRN leads to terminal

TB4--3.See Fig. 27.

DEFROST

BOARD

ORN

BRN

Field

Connections

E-HEAT

P3-3

ORN BRN

VIO BRN BRN

VIO

TB4

VIO HR2

HR1

BRN

VIO BRN

Elec Htr

HR1: On Heater 1 in Position #1

HR2: On Heater 2 in Position #2 (if installed)

C09013

Fig. 27 --Accessory Electric Heater ControlConnections

50TCQA