Hamilton Home Products WE30B Series, Installation Manual

Page: 9 / 22

Hamilton Home Products Canal Winchester, OH
43110
61MH0028A Page 9
8. Insert the green wire into the ground lug and tighten the
set screw.
Dual Circuit Line Wiring Connections: 12kW, 15kW or
20kW Models
9. You will need to insert the black wire from the second
power supply into the L1 screw terminal on the second
circuit breaker down from the top and tighten the set
screw to clamp down on the wire.
10. You will need to insert the white or red wire from the
second power supply into the L2 screw terminal on the
second circuit breaker down from the top and tighten the
set screw to clamp down on the wire.
11. You will need to insert both green wires into the ground
lug and tighten the set screw.
12. Tighten the screws on the cable connectors until the
power supply wires are securely fastened to the
connector.
NOTE: The furnaces are equipped with either one or two
circuit breakers. These circuit breakers protect the wiring
inside of the furnace in the event of a short circuit.
Additionally, these breakers provide a means of disconnecting
the power to the unit. The circuit breakers in the furnace are
not meant to protect the branch circuit wiring between the
furnace and the home's breaker panel. General wire and
breaker sizes are shown in Tables 6 and 7. If sheathed cable is
used, refer to NEC National Electrical Code (NFPA 70) or the
Canadian Electrical Code, Part I (CSA C22.1) and local codes
for additional requirements concerning supply circuit wiring.
Electrical data can be found in Tables 6, 7, and 8.
IMPORTANT - All installation on field wiring must be rated
at 60ºC or higher. Please refer to the wiring diagrams on the
furnace or this book for more information.
The 12kW 15kW and 20kW models may be connected to a
single or dual branch circuit.
IMPORTANT - Refer to the NEC National Electrical Code
(NFPA 70) or the Canadian Electrical Code, Part I (CSA
C22.1) and local codes for wiring material requirements.
10 kW Heater Amps ‐ 208/240 VAC
12 kW Heater Amps ‐ 208/240 CAC
15 kW Heater Amps ‐ 208/240 VAC
20 kW Heater Amps ‐ 208/240 VAC
Indoor Blower Type
Indoor Blower Amps
Circuit Load ‐ FLA ‐ 240 VAC 44.87 53.20 65.70 86.53
Heater ‐ kW 10 12 15 20
Min. Wire Size (90°C) #6 #4 #3 #4
Minimum Wire Size (75°C) #6 #4 #3 #3
Minimum Wire Size (60°C) #4 #4 #2 #2
Ground Wire Size * * * *
Max Fuse/Circuit Breaker Amps 60 70 90 125
Constant Torque
3.20
47.6/62.5
63.33/83.33
31.66/41.66
38/50
WE30B4
AIR HANDLER MODELS
Table 6: Wiring Requirements – Single Branch Circuit
10kW Single Stage model can only be wired as a single power supply.
Single power supply will require circuit breaker jumper bar or a jumper wire.
+ Refer to the National Electrical Code Table 250-95 for Non-Sheathed Conductor Ground Wire.
* Ground conductor must be the same size and temperature rating as the other conductors listed in Table 6.
Indoor Blower Amps are the tested blower motor amps, not FLA. The FLA’s are: 1/3 HP is 2.8A, 1/2 HP is 4.1A and 3/4 HP is 6.0A