United Technologies Carrier WeatherMaker 50TC A08 Series, Installation Instructions Manual

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Fig. 58 — Typical Single Point Installation
Heater 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.
All fuses on 50TC-*16 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.)
Heater Low-Voltage Control Connections — One or two
heaters can be installed in the unit. Use the wiring procedure
listed below for each heater as determined by the number of
stages in the heater.
Single Stage Heaters: Single-stage heaters will have an
orange and a brown control wire. Connect these to the orange
and brown wires located on TB4.
Two Stage Heaters: Two-stage heaters will have orange, pur-
ple, red and brown wires. The orange and the purple are the
control wires and the red and brown wires feed the safety cir-
cuit. Connect both the orange and the purple wires to the
orange wire locations of TB4. Connect the red and brown
wires to red and brown wires on TB4. If more than one heater
is installed, repeat the wiring procedure for the second heater.
The 3 locations across the top of TB4 do allow a switch to be
installed in series with some of the heaters in order to add addi-
tional heater control.
Fig. 59 — Typical Component Location
ALLIED PA
MODEL NO.
ERIAL NO.
CORP.
11 13
21 23
OD
22.2
3
1
23
ISTED AIR NDITIONING
UIP ACCESS
346N
.
P / N 2- 5610-4 REV
1
1
1
3
2
1
2 3
CONTROL
BOX
BUSHING
SINGLE
POINT BOX
MOUNTING
SCREWS
FOAM
BUSHING
DRIP BOOT
BRACKET
MOUNTING
SCREWS
HEATER
RELAYS
POWER
WIRES
HEATER
MOUNTING
SCREWS
HEATER
MOUNTING
BRACKET HEATER
MODULE
(LOCATION 2) HEATER
MODULE
(LOCATION 1) SINGLE POINT
BOX
MOUNTING
SCREW
SINGLE
POINT BOX HEATER
COVERS MANUAL RESET
LIMIT SWITCH
DISCONNECT
MOUNTING
LOCATION