Figure 6-30. Communications Interface Installation; Table 6-5 Recommended Bolt Torque Values - Carrier 69NT40--541--200 TO 299 Operation And Service

6.27 COMMUNICATIONS INTERFACE MODULE
INSTALLATION
CB1
Figure 6-30. Communications Interface
Installation
Units with communication interface module provision
have the required wiring installed. The provision wiring
kit (part number 76--00685--00), includes three
pre--addressed wires installed between the circuit
breaker and communication interface module locations.
These wires are to be connected to the module and
circuit breaker to allow the module to communicate over
the power system. To install the module, do the
following:
WARNING
THE UNIT POWER PLUG MUST BE DIS-
CONNECTED TO REMOVE POWER FROM
CIRCUIT BREAKER CB1
a.. CB1 is connected to the power system, see wiring
schematic. Ensure that the unit power is off AND
that the unit power plug is disconnected.
b.. Open control box, see Figure 6-30 and remove low
voltage shield. Open high voltage shield.
Communications
interface Module
6-29
c.. Remove the circuit breaker panel, with circuit
breaker, from the control box.
d.. Locate, wires CB21/CIA3,
CB23/CIA7 that have been tied back in the wire
harness. Remove the protective heat shrink from
the ends of the wires.
e.. Attach the three wires as addressed to the LOAD
side of the circuit breaker.
f.. Refit the circuit breaker panel.
g. Fit the new RMU into the unit.
h. Remove plugs CIA, CIB and CID from the wiring
harness and attach to the module.
.i. Replace the low voltage shield.

Table 6-5 Recommended Bolt Torque Values

BOLT DIA. THREADS
FREE SPINNING
#4 40
#6 32
#8 32
#10 24
1/4 20
5/16 18
3/8 16
7/16 14
1/2 13
9/16 12
5/8 11
3/4 10
NONFREE SPINNING (LOCKNUTS ETC.)
1/4 20
5/16 18
3/8 16
7/16 14
1/2 13
9/16 12
5/8 11
3/4 10
CB22/CIA5 and
TORQUE N.m
5.2 in-lbs .6
9.6 in-lbs 1.0
20 in-lbs 2.25
23 in-lbs 2.6
75 in-lbs 8.4
11 ft-lbs 1.52
20 ft-lbs 2.76
31 ft-lbs 4.28
43 ft-lbs 5.94
57 ft-lbs 7.88
92 ft-lbs 12.72
124 ft-lbs 17.14
82.5 in-lbs 9.3
145.2 in-lbs 16.4
22.0 ft-lbs 30
34.1 ft-lbs 46
47.3 ft-lbs 64
62.7 ft-lbs 85
101.2 ft-lbs 137
136.4 ft-lbs 168
T--317