Weil-McLain 550-141-827/1201 manual Install jacket sizes 7 through 9 only, Install boiler controls

Install Non-Packaged Boiler CONTINUED

Install jacket (sizes 7 through 9 only):

Before installing jacket, remove burner mounting door. See jacket instructions for details.

Install boiler controls:

See Control Tapping Table and FIGURES 3 and 4 to install controls.

1.Install tankless heater control if tankless heater is used. If not furnished, use operating control with maximum 10°F differential.

2.Install limit control. If not furnished, use high limit with maximum 220°F setting.

3.Affix CP number label(s) on jacket front panel.

CONTROL TAPPING TABLE

TAPPING	SIZE	FUNCTION
A1	1½"	Supply Piping
A2	2½"	Air Vent or Expansion Tank Piping
A3	2½"	Plugged
B1	1½"	Return Piping
B2	2"	Plugged
E1	½"	Pressure-Temperature Gauge
E2	½"	Plugged
H	¾"	DrainValve
L	¾"	High Limit Control
P	¾"	Plugged
R	¾"	ReliefValve
S1 & S2	½"	Plugged
U1	1"	Plugged
U2	¾"	Plugged
		Operating Control for Tankless
U3	¾"	Heater
		(located in heater plate)

	S1	A1	A2		L		A3
							R
E1
E2				P		U1
U3
S2								U2

		B2
B1	Front Section	H
			Back Section
		Control Tapping Location
		FIGURE 3

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