Install Instructions

Figure 59 Field wiring overview (see Figure 60, page 62 and
Figure 61, page 63 for detailed schematic and ladder
wiring diagrams) EVG -155 shown
Part number 550-100-191/0917
55
®
gas-fired water boiler — 70/110/155 Boiler Manual
Multiple boiler communication wiring
1. Wires should be shielded thermostat wires, or equivalent.
2. Route wires through top right knockout to communication
board on display bracket.
3. Provide strain relief and seal at cabinet entry.
Field wiring (continued)
Line
Voltage
Multiple
boiler
communication
wiring
Low
Voltage
Wiring to
Comm board
inside cabinet
boiler