Installation Guide

47
Multiple HAFC’s and Switching Relay
TO: "TT" ON BOILER
H
N
120 VAC
INPUT
FOUR ZONE SWITCHING RELAY
120 VAC CIRCULATORS
ZC
INPUT
120 VAC
ZONE 1 ZONE 2 ZONE 3 ZONE 4
ZONE1
ZONE2
ZONE3
SR 504-4
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
FUSE
6 AMP
X X R W R W R W R W
ISOLATED
END
SWITCH
THERMOSTATS (24 VAC)
PRIORITY
120 VAC
ZR
H H N H N H N H N H N H
ZONE4
ZONE 2 POWER ZONE 1 ZONE 3 ZONE 4
LED
INDICATORS
ZONE 4
PRIORITY
OFF ON
PRIORITY
24 VAC
COM
BOILER
INDIRECT
WATER HEATER
AQUASTAT OR
THERMOSTAT
JUMPER
HAFC201-4
HYDRO AIR FAN CONTROL
THERMOSTAT
POWER HEAT CALL
LED
INDICATORS
THERMOSTAT
T
C R W Y G
AQUASTATS
T T
HAFC201-4
COOL FAN
HEAT FAN
BOILER
C
AIR HANDLER
X X R Y G
L GH
WATER
COIL
FREEZE
PROT.
T T
X X
PUMP
1 MIN FAN DELAY
3 MIN FAN DELAY
2MIN/24HR or 30SEC/2WK
PUMP EXERCISE
OFF ON
To: Optional
Aquastat on
Return Line of
Hydro Coil
To: Optional Aquasta
t
or Thermostat to sense low ambient
temperature
Optional Power Wire
to Thermostat that Requires 24VAC
NOTE: For 4 minute
ON DELAY of Heating Fan,
switch 1 and 3 MIN ON
DELAY to ON position.
OUTDOOR
CONDENSER
UNIT
FAN RELAY
LINE
24 VAC
LOW
HIGH
M
HAFC201-4
HYDRO AIR FAN CONTROL
THERMOSTAT
POWER HEAT CALL
LED
INDICATORS
THERMOSTAT
T
C R W Y G
AQUASTATS
T T
HAFC201-4
COOL FAN HEAT FAN
BOILER
C
AIR HANDLER
X X R Y G
L GH
WATER
COIL
FREEZE
PROT.
T T
X X
PUMP
1 MIN FAN DELAY
3 MIN FAN DELAY
2MIN/24HR or 30SEC/2WK
PUMP EXERCISE
OFF ON
To: Optional Aquastat on Return Line of Hydro Coil
To: Optional Aquastat
or Thermostat to
sense low ambient temperature
Optional Power Wire
t
o Thermostat
t
hat Requires 24VAC
NOTE: For 4 minute
ON DELAY of Heating Fan,
switch 1 and 3 MIN ON
DELAY to ON position.
OUTDOOR
CONDENSER
UNIT
FAN RELAY
LINE
24 VAC
LOW
HIGH
M
HAFC201-4
HYDRO AIR FAN CONTROL
THERMOSTAT
POWER HEAT CALL
LED
INDICATORS
THERMOSTAT
T
C R W Y G
AQUASTATS
T T
HAFC201-4
COOL FAN
HEAT FAN
BOILER
C
AIR HANDLER
X X R Y G
L GH
WATER
COIL
FREEZE
PROT.
T T
X X
PUMP
1 MIN FAN DELAY
3 MIN FAN DELAY
2MIN/24HR or 30SEC/2WK
PUMP EXERCISE
OFF ON
To: Optional
Aquastat on Return Line of
Hydro Coil
To: Optional Aquastat
or Thermostat to
sense low ambient temperature
Optional Power Wire
to Thermostat that Requires 24VAC
NOTE: For 4 minute
ON DELAY of Heating Fan,
switch 1 and 3 MIN ON
DELAY to ON position.
OUTDOOR
CONDENSER
UNIT
FAN RELAY
LINE
24 VAC
LOW
HIGH
M