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Part Number PLUS-E017-A/1206
PLUS LINE
Indirect-Fired Water Heaters – Series 3
Figure 20
GOLD Plus 30/40/60/80
Plus 40/60/80
• Zoning with pumps
• Place pumps at beginnings of
zones. Placing them at the ends
of zones could result in heating
idle zones.
• Size manifold piping for total flow
of all zone pumps.
• Locate flow/check valves
as close as possible to water
heater boiler side connections
— to reduce heat loss between
cycles.
• Pipe GV boilers only as shown
on page 24.
Wiring options:
• Figure 30, page 48 — WMCR
zone controller, optional priority
• Figure 31, page 49 — Priority
zone pump
• Figure 32, page 50 — Pump
relays with domestic priority
• Figure 33, page 51 — Pump
relays without domestic priority
1. This drawing is conceptual only. It shows representative piping components and layout.
Weil-McLain does not represent that this drawing meets any particular mechanical or
building codes. The installer is responsible for inclusion of all required safety devices, or
other miscellaneous piping hardware not shown on drawing. The installer is responsible
for proper sizing/selection of all hardware shown on this diagram.
2. See Weil-McLain installation instructions for specific details on installing the boiler.
Notes
Boiler-side piping (except Gas) continuedC