Typical Wiring For 3 Heat / 2 Cool Heat Pump - iO HVAC Controls iO-WR Installation & Operation Manual

TYPICAL WIRING FOR
BUTTON
LED
C
R
W
O/B
Y2
Y1
G
4. Make sure 2 VAC power is off before connecting wires to the base
transceiver.
5. The wiring diagram above illustrates the use of all channels for a 3 heat / 2
cool heat pump system. Depending on the application, not all channels may be
required.
iO-WRSM
WIRELESS
SATELLITE TRANSCEIVER
REV 1
HVAC Controls HV AC Controls
3. When possible, mount the iO WRSM on a non-metalic surface close to the
outdoor unit to facilitate ease of wiring.
4. Follow the same wiring procedure as used for the iO WRBM.
3 HEAT / 2 COOL HEAT PUMP
TRANSCEIVER MODULE
TERMINAL DESIGNATIONS
C = 24VAC COMMON
R = 24VAC HOT
W = AUXILIARY HEAT (REC)
O/B = REVERSING VALVE (SEND)
Y2 = SECOND STAGE COMPRESSOR (SEND)
Y1 = FIRST STAGE COMPRESSOR (SEND)
G = FAN
iO-WRSM Satellite
Transceiver Module
1
. The iO-WRSM Satellite
Transceiver is mounted near the
outdoor unit and should be
installed with the wiring access
hole at the bottom. The enclosure
has a moisture-proof perimeter
seal.
2. If 2 VAC is not available from
the indoor unit, a transformer must
be installed in the outdoor unit.
Refer to iO-WRSM wiring diagram.
iO-WRBM
BASE
C
R
W
O/B
Y2
Y1
G