20
the unit’s
RATED VOLTAGE REQUIREMENT. Install a branch circuit disconnect
near the rooftop, in accordance with the N.E.C., C.E.C. or local codes.
2. It is important that proper electrical power is available at the unit. Voltage should
not vary more than 10% from that stamped on the unit nameplate. On three
phase units, phases must be balanced within 3%.
3. For branch circuit wiring (main power supply to unit disconnect), the minimum wire
size for the length of run can be determined from Table 3 using the circuit ampacity
found on the unit rating plate. Use the smallest wire size allowable from the unit dis-
connect to unit.
4. For through the base wiring entry reference
Figure 21.
All fittings and conduit are
field supplied for this application. Reference the chart with
Figure 21
for proper hole
and conduit size.
NOTES:
1. For branch circuit wiring (main power supply to unit disconnect), the minimum
wire size for the length of run can be determined from this table using the circuit
ampacity found on the unit rating plate. From the unit disconnect to unit, the
smallest wire size allowable in Table 4 may be used, as the disconnect must be
in sight of the unit.
2. Wire size based on 75°C rated wire insulation for 1% voltage drop.
3. For more than 3 conductors in a raceway or cable, see the N.E.C. (C.E.C. in
Canada) for derating the ampacity of each conductor.
IMPORTANT: THIS UNIT IS AP PROVED FOR USE WITH COPPER CONDUC-
TORS ONLY CONNECTED TO UNIT CONTACTOR.
WARRANTY MAY BE JEOPARDIZED IF ALUMINUM WIRE IS CONNECTED TO
UNIT CONTACTOR.
Special instructions apply for power wiring with aluminum conductors:
Warranty is void if connections are not made per instructions.
Attach a length (6” or more) of recommended size copper wire to the unit contactor
terminals L1, L2 and L3 for three phase.
AWG Copper AWG Aluminum
Connector Type and Size
Wire Size
Wire Size
(or equivalent)
#12
#10
T & B Wire Nut
PT2
#10
# 8
T & B Wire Nut
PT3
# 8
# 6
Sherman Split Bolt
TSP6
# 6
# 4
Sherman Split Bolt
TSP4
# 4
# 2
Sherman Split Bolt
TSP2
TABLE 4
FIGURE 20
RECOMMENDED BRANCH CIRCUIT DISCONNECT LOCATION
ST-A1125-01
Содержание B180CL25E
Страница 48: ...48 FIGURE 33 RKNL B SERIES B 241 MODELS 00 90 42517 56 10 5 18 PCB PRESSURE CONTROL BOARD RKNL B241 ...
Страница 50: ...50 FIGURE 35 RKNL C SERIES 208V 208V 208V 208V 04 ...
Страница 54: ...54 FIGURE 39 RKNL H SERIES 208V 208V 208V 208V 01 ADDED RED 208V LEAD TO IDM S VYM Y 0655S251 04 04 18 01 ...
Страница 60: ...60 97B0055N24 97B0055N24 CM 0418 ...