Weil-McLain PLUS-E017-A/1206 C Boiler-sidepiping except Gas continued, Primary/secondary piping

PLUS LINE  Indirect-Fired Water Heaters – Series 3

C Boiler-side piping (except Gas)  continued

Figure 22

GOLD Plus 30/40/60/80

Plus 40/60/80

PLUS 100/110/119

•Zoning with pumps

•Primary/secondary piping

•Place pumps at beginnings of zones. Placing them at the ends of zones could result in heating idle zones.

•Size primary circuit manifold for total flow of all zone pumps, with pressure drop of no more than 1 foot W.C.

Wiring options:

•Figure 42, page 60 — Pump relays and 3-way priority valve and priority relay

Notes	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.

38 Part Number PLUS-E017-A/1206