Weil-McLain CIRCULATOR ZONE CONTROLS WMR-21 User Manual

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WMR Switching Relays

Part Number 550-141-859/0608

WMR-21 — Typical application

Add circulator to L8124A or C

aquastat/relay

WMR-21 and WMR-22

General wiring

Electrical shock hazard —

Disconnect power before

installing or servicing. Can cause

severe personal injury, death or

substantial property damage if

ignored.

All wiring must be installed in

accordance with:

U.S.A. — National Electrical

Code and any other national,

state or local code requirements.

Wiring must be N.E.C. Class 1.

Canada — C.S.A. C22.1 Cana-

dian Electrical Code Part 1 and

any other national, provincial or

local code requirements. Wiring

must be C.S.A. C22.1 C.E.C.

Part 1.

Weil-McLain CIRCULATOR ZONE CONTROLS WMR-21 Circulator Zone Controls Circulator Zone Control