Typical Power Wiring (Vrb Heat Recovery System Shown) - Lennox VPB036H4M Installation Instructions Manual

208/230V 3Ph 60Hz
208/230V 1Ph 60Hz or 460V 3Ph 60Hz
Power supply
L1 L2
L1 L2
Dedicated
breaker
L1 L2 L3
L1 L2 L3
Mode Selection Box
L1 L2
Service
Disconnect
Fuse
Always follow NEC/CEC and Local Codes.
Figure 15. Typical Power Wiring (VRB Heat Recovery System Shown)
Power supply
L1 L2 L3
Outdoor Unit (Main Unit)
Service
Disconnect
L1 L2 L3
Indoor Unit
Service
L1 L2
Disconnect
Fuse
Outdoor Unit (Sub1 unit)
L1 L2 L3
L1 L2 L3
Service
Disconnect
L1 L2 L3
Indoor Unit
Service
L1 L2
Disconnect
Fuse
20
Outdoor Unit(Sub2 Unit)
L1 L2 L3
L1 L2 L3
Service
Disconnect
L1 L2 L3
AHU Control Kit
L1 L2 Service
Disconnect
Fuse