Weil-McLain PLUS-E017-A/1206 manual D Boiler-sidewiring & controls except Gas, Zoning with pumps

PLUS LINE  Indirect-Fired Water Heaters – Series 3

D Boiler-side wiring & controls (except Gas)

This section provides suggested boiler-side wiring and control suggestions for boilers covered

in Section C of this manual. Section D does not apply to Gas-fired boilers, covered in Section B. In Section D, you will find suggested wiring for:

•zoning with zone valves

•zoning with circulators

•wiring with and without domestic priority

•using separate relays or zone controllers

Make sure to use a compatible piping method as shown in the Section C. (Each wiring diagram lists compatible piping alternatives.)

Wiring requirements		47
Wiring requirements — Circulators		47
Wiring requirements — Zone Valves		47
Boiler models requiring domestic priority with GOLD Plus 30		47
Zoning with pumps:
Zoning with Weil-McLain circulator zone controller (WMCR)
• Weil-McLain circulator zone controller		48
Other options for for zoning with pumps
• Using priority zone pump		49
• Using pump relays	• Domestic priority with priority relay	50
• Using pump relays	• No domestic priority	51
• Pumps relays • Domestic priority with 3-way priority valve & priority relay		60
Zoning with zone valves:

Zoning with Weil-McLain zone valve controller (WMZV)

• Domestic priority optional (controller switch)			52
Zoning with 4-wire zone valves
• No domestic priority			53
• With or without priority	• GOLD Plus 30/40/60/80 or	Plus 40/60/80	55
• With domestic priority	• PLUS 100/110/119		57
• With domestic priority using 2-way priority valve • PLUS 100/110/119			58
Zoning with 3-wire zone valves
• No domestic priority			54
• With or without priority	• GOLD Plus 30/40/60/80 or	Plus 40/60/80	56
• With domestic priority	• PLUS 100/110/119		57
• With domestic priority using 2-way priority valve			59

46 Part Number PLUS-E017-A/1206