CAUTION: Wrap a wet cloth around rear of fitting to prevent damage to TXV and factory-made joints. Failure to follow
this CAUTION could result in minor personal injury or product and property damage.
4. Evacuate coil and tubing system to 500 microns using deep vacuum method.
PROCEDURE 6—CONDENSATE DRAIN
To connect drains the cap openings must be removed. Use a knife to start the opening near the tab and using pliers, pull the tab to remove the
disk. Clean the edge of the opening if necessary and install the condensate line. Finally caulk around the lines where they exit the fitting to retain
the low leak rating of the unit.
Fig. 11—FV4B Fan Coil Wiring with 1-Speed Heat Pump
A98475
O/W2
W/W1
Y1/W2
G
R
O
W2
INDOOR CONTROL
FAN COIL
1-SPEED
HEAT PUMP
W1
G
C
Y
R
W2
O
C
DHUM
HUM
B
S1
S2
Y/Y2
R
Y1
C
DH
HEAT STAGE 3
HEAT STAGE 2
HEAT/COOL
STAGE 1
RVS COOLING
FAN
24 VAC HOT
24 VAC COMM
DEHUMIDIFY
HUMIDIFY
RVS HEATING
OUTDOOR
SENSOR
CONNECTION
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
REMOVE J2 JUMPER
FOR HEAT STAGING
REMOVE
J1 JUMPER FOR
DEHUMIDIFY
MODES
Fig. 12—FV4B Fan Coil Wiring with 2-Speed Puron Heat Pump
A02005
O/W2
W/W1
Y1/W2
G
R
O
Y1
INDOOR CONTROL
FAN COIL
2-SPEED
HEAT PUMP
W1
G
W2
C
Y2
R
W1
Y1
O
C
DHUM
HUM
B
S1
S2
Y/Y2
R
C
DH
HEAT/COOL
STAGE 1
HEAT STAGE 3
HEAT/COOL
STAGE 2
RVS COOLING
FAN
24 VAC HOT
24 VAC COMM
DEHUMIDIFY
HUMIDIFY
RVS HEATING
OUTDOOR
SENSOR
CONNECTION
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
REMOVE J2
JUMPER FOR
HEAT STAGING
REMOVE J1 FOR
DEHUMIDIFY
MODES
—9—