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Module WIR
Hi-Velocity Wiring & Dip Settings (4/11)
W1
W1 input to 1st (low stage) heat calls. Active when R is applied. Activates 1st
stage heat fan and Auxiliary Relay.
(W1 operates at 60% of W2 Fan Speed)
W2
W2 input to 2nd (high/primary stage) heat calls. Active when R is applied.
Activates 2nd stage heat fan, Auxiliary Relay and 24V to Z1
(W2 operates at 200 CFM per ton
(94 L/s)
, refer to dip setting)
C
24V supply common
G
G input for thermostat fan switch. Active when R is applied
(G operates at 50% of Y2 Fan Speed)
R
24V supply
Y2
Y2 input to 2nd (high/primary stage) cooling or heat pump call. Active when R is
applied. Activates 2 stage cooling fan speed, activates X1 with 24V for freeze stat
and condenser connections
(Y2 operates at 250 CFM per ton
(118 L/s)
, refer to dip setting)
Y1
Y1 input to 1st (low stage) cooling or heat pump calls. Active when R is applied.
Activates 1 stage cooling fan speed.
(Y1 operates at 60% of Y2 Fan Speed)
D
24V input required from dehumidistat switch activates blower system to 200
CFM per ton
(94 L/s)
from dip setting. Y2 must be activated from thermostat.
(D operates at 200 CFM per ton
(94 L/s)
, refer to dip setting)
O/B
Blind contact for condenser heat pump from thermostat
X1
24V Signal with calls from Y2, powers Freeze Stat
X2
Freeze Stat connection return signal
H1
24V Signal to Y on Condenser
C
Common for Condensing Unit
Z1
24V supply on W2 call
C
Common
*Note: X1 to X2
recommended to be wired to Freeze Stat (Anti-Ice Control) If Freeze Stat is not used, a jumper between X1 to X2 must be
installed to complete the H1 - 24V Signal to Y on Condenser (i.e. Chilled Water Systems)
v.03
HE Fan Coil - 24V Wiring Controls
Module WIR Hi-Velocity Wiring & Dip Settings (4/11)
