16
TRACK
FLANGE
C08135
Fig. 2 5 -- Typical Module Installation
Single Point Boxes and Supplementary Fuses — When
the unit MOCP device value exceeds 60--A, unit--m ounted
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. 26. The Single Point Box also includes pigtails to
complete the wiring between the Single Point Box and the
unit’s main control box terminals. Refer to the accessory
heat er and Single Point Box installation instructions for
deta ils on tap connections.
A
L
L
I
E
D
P
A
M
O
D
E
L
N
O
.
ER
I
A
L
N
O.
C
O
R
P
.
11
13
21
23
O
D
2
2
.
2
3
1
2
3
ISTED
AI
R
NDITIONING
UIP
ACCESS
3
4
6
N
.
P
/
N
2-
5
6
10-
4
REV
1
1
13
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
C08136
Fig. 26 -- Typical Single Point Installation
All fuses on 50TCQ 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 — Refer to accessory
heat er and Single Point Box installation instructions for
deta ils on tap connections.
Low--Voltage Control Connections — Run the
low--voltage cont rol leads from the heater modul e(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 leads 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
13
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 Control Connections
50TCQA
