Rheem RKKL Series, Installation Instructions Manual, Page: 30 / 56

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• Drain line must be routed to an acceptable drain or outdoors in accordance with local
codes.
• Do not connect condensate drain line to a closed sewer pipe.
• Drain line may need insulation or freeze protection in certain applications.
IV. WIRING
A.POWER SUPPLY
1. All wiring should be made in accordance with the National Electrical Code.
Consult the local power company to determine the availability of sufficient power to
operate the unit. Check the voltage at power supply to make sure it corresponds to
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 1 using the circuit ampacity found on
the unit rating plate. Use the smallest wire size allowable in Table 4 from the unit dis-
connect to unit.
4. For through the base wiring entry reference Figure 17. All fittings and conduit are field
supplied for this application. Reference the chart with Figure 17 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 1 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 APPROVED FOR USE WITH COPPER CONDUCTORS
ONLY CONNECTED TO UNIT CONTACTOR.
FIGURE 15
CONDENSATE DRAIN
DO NOT OVERTIGHTEN DRAIN FITTING
!
WARNING
TURN OFF THE MAIN ELECTRICAL POWER AT THE BRANCH CIRCUIT DIS-
CONNECT CLOSEST TO THE UNIT BEFORE ATTEMPTING ANY WIRING. FAIL-
URE TO DO SO CAN CAUSE ELECTRICAL SHOCK RESULTING IN PERSONAL
INJURY OR DEATH.
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