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McQuay Enfinity series - Page 19

McQuay Enfinity series
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IM 778 / Page 19
Motorized Valve & Relay for Unit Sizes 007 thru 060
Wired as shown below the motorized valve will open on a
call for compressor operation. Valves for unit sizes 007 to
019 are
1
2" while unit sizes 024 to 060 are
3
4". Other ther-
mostat combinations may be used. Valve and auxiliary
relay(s) are purchased separately.
Note: The wiring shown below can only be used when the “P” ter-
minal is not being used as a pump restart signal to other equip-
ment. If the “P” terminal must be used as a pump restart signal to
other equipment, then wire the auxiliary relay’s yellow wire to
“Y1”, white wire to “W1”, and orange wire to “C”, then the valve
will open on a call for occupied heating or cooling from the
thermostat.
6
3
1
Black to 6
White to 1
Plug
Pins,
Female
Conduit
Anti-Short
Bushing
Connector
Valve
36" (915 mm)
Lead Length
P/N 060977401 - 1/2" Motorized Valve Kit
P/N 060977301 - 3/4" Motorized Valve Kit
P/N 859004354 - Valve Relay Kit
WSHP Mark IV/AC Board Low Voltage Terminal Strip
OW2GW1Y1 F E L U A P V R C
1
2
3
Auxiliary Relay
Orange
Yellow
White
631
Time Clock
(by others)
Daisy-chain to
additional Mark IV/AC
board “U” terminals
BL
GN

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