Weil-McLain GL-E223-ADOC 0311 manual Boiler-sidepiping continued, Wiring

AQUA PLUS indirect-fired water heaters — Product Manual

Boiler-side piping (continued)

Figure 8 Zoning with circulators — primary/secondary system piping

Notes

•Place circulators at begin- nings of zones. Placing them at the ends of zones could result in heating idle zones.

•Size manifold piping for total flow of all zone cir- culators.

•Locate flow / check valves as close as possible to water heater boiler side connec- tions — to reduce heat loss between cycles.

Wiring

•WMCR zone controller, optional priority — Fig- ure 18, page 21.

1.This drawing is conceptual only. It shows representa- tive piping components and layout. Weil-McLain does not represent that this drawing meets any partic- ular mechanical or build- ing codes. The installer is responsible for inclusion of all required safety de- vices, or other miscella- neous piping hardware not shown on drawing. The installer is responsible for proper sizing / selection of all hardware shown on this diagram.

2.See boiler manual for spe- cific details on installing the boiler.

Recommended flow rate and minimum boiler-side pipe size

Heater	GPM	Pipe	Heater	GPM	Pipe
model		size	model		size
35	8	1”	85	14	1¼” *
45	8	1”	105	14	1¼” *
55	8	1”	Requires 1¼”x1” reducers at water heater

GV90+ or Ultra gas boilers:

DO NOT apply the drawings in this manual. Refer only to the boiler manual.

12 Part number GL-E223-ADOC 0311