Weil-McLain 550-141-850/0599 manual IIIe Water piping — baseboard system, Baseboard system piping

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IIIe Water piping — baseboard system

Figure 11a Baseboard system (finned tube or cast iron) — zone valve zoning

Zone 2

Zone 1

Baseboard system piping

Apply Figure 11a (zone-valve zoning) or 11b (circulator zoning) to systems using baseboard heaters. The heaters can be any baseboard style, including finned tube or cast iron.

The boiler internal “System circulator” can be used to circulate most zone-valve zoned systems as shown in Figure 11a. For systems requiring higher flow, apply the suggested piping of Figure 12a.

The boiler internal circulators must be left in the boiler. They cannot be removed for use a a zoning circulator. Provide a circulator for each zone when circulator zoning, and pipe the system as in Figure 11b.

Cold water fill

GV Boiler

85013a

Figure 11b Baseboard system (finned tube or cast iron) — circulator zoning

Zone 2

Zone 1

12"

max

Cold water

fill

Legend

1Boiler isolation valves

2Automatic air vent (with diaphragm-type expansion tank), or connect to tank fitting (closed-type expansion tank).

3Diaphragm- or bladder-type expansion tank, if used. (For closed-type expansion tank, pipe from top of air separator to tank fitting as in Figure 10.)

4Zone valve

	5	Zone circulator
	6	Flow/check valve
GV Boiler	7	Hose bibb purge valve
85017	8	Boiler pressure/temperature gauge
Part number 550-141-850/0699		31