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Instruction manual
• WMR-21 DPST (Double-pole/single throw)
• WMR-22 DPDT (Double-pole/double throw)
WMR-21
T
24V
Switching Relay
C
R
L2 L1 3
120 VAC
Weil-McLain
Michigan City, IN
This manual must only be used by a
. Failure to comply could result in severe personal injury, death
technician
or substantial property damage.
T
W
Made in U.S.A.
Circuit ON
WMR-22
Switching Relay
T
R
4
5
6
Weil-McLain
Michigan City, IN
85902
qualified heating installer/service
Part Number 550-141-859/0799
NO
NC
T
24V
6
5
6
W
C
L2 L1
3
4
4
NO
NC
120 VAC
Made in U.S.A.
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Summary of Contents for Weil-McLain WMR-21 DPST
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Page 1: Instruction Manual
WMR-21 Switching Relay Made in U.S.A. Circuit ON WMR-22 Switching Relay L2 L1 3 120 VAC Weil-McLain Michigan City, IN L2 L1 120 VAC Weil-McLain Made in U.S.A. Michigan City, IN 85902 This manual must only be used by a qualified heating installer/service . -
Page 2: Specifications
WMR-21 120 V 60 HZ DPST 10 A, 10 A, 15 VA WMR-22 120 V 60 HZ DPDT 10 A, 10 A, 15 VA Replacement parts Part description Weil-McLain part number Plug-in relay (24 VAC coil) 510-311-021 Part Number 550-141-859/0799... - Page 3 McLain Rodgers L2 L1 3 WMR-21 AR821 RA 89A SR501 809A-189 120 VAC WMR-21 AR821 RA 832A SR501 829A-832 Weil-McLain Michigan City, IN WMR-21 AR821 R 845A SR501 829A-845 WMR-22 — Double pole/double throw switching relay 85904 WMR-22 Switching Relay...
- Page 4 WMR-21 and WMR-22 WMR-21 — Typical application General wiring Add circulator to L8124A or C aquastat/relay 24 vac to 3-wire Thermostat or 24 vac to 3-wire Thermostat or thermostat thermostat isolated contact isolated contact to activate relay to activate relay Electrical shock hazard —...