Instruction Sheet - Hydro Air Fan Controls - Taco SR501 Wiring Manual

Operation HAFC101 and 201:
The Hydro Air Fan Control is an interface
between the thermostat and air handler. It
also has an isolated end switch to start the
boiler and/or pump. When the thermostat
calls for heat, the Fan Control energizes the
end switch relay and allows the fan to operate
at low speed when the water is above the
optional aquastat setting. When the thermo-
stat calls for cooling, the Fan Control energizes
the condenser and operates on high speed.
Additional HAFC201 Operations:
Selectable one, three or four minute delay on
fan operation in heating mode. Selectable
pump exercise activates circulator but does
not enable boiler contacts. Two minutes every
24 hours minimizes the chance of bacteria
build-up in an open loop system. Thirty sec-
onds every two weeks minimizes seasonal
start-up problems generally associated with
harsh water conditions. Optional aquastat or
thermostat can be connected to Freeze
Protection TT terminals to reduce the chance
of pipes freezing by energizing the pump dry
contacts (boiler contacts not activated.)
Switch Settings (HAFC201):
1 1 minute on fan delay, in heating mode
2 3 minute on fan delay, in heating mode
1&2 4 minute on fan delay, in heating mode
3 Pump dry contact activated for 2 min-
utes every 24 hours (boiler contacts not
activated)
4 Pump dry contacts activated for 30 sec-
onds every two weeks (boiler contacts
not activated)
External Diagnostics:
The external lights show full functionality of
the Hydro Air Fan Control. The green light
should always be on, indicating that power is
connected. Red lights indicate fan operation
for heating and cooling modes.
Warning:
Wiring connections must be made in accordance with
all applicable electrical codes. Use copper wire only.
Failure to follow this instruction can result in personal
injury or death and/or property damage. 10-18 gauge
wire recommended for 120 VAC connections with
9 in.lbs. max torque, 12-22 gauge wire for thermostat
connections with 9 in.lbs. max torque, and 12-22 gauge
wire for 24 VAC source with 5 in.lbs. max torque.
Specifications:
PRODUCT NUMBER POWER INPUT
NUMBER OF ZONES
HAFC101** 1 Zone 24 VAC Input
HAFC201•• 1 Zone 24 VAC Input
The Hydro Air Fan Controls are relay type DPDT, have a thermostat current of .18 and a single phase motor rating per zone of 1/6 HP (5A) @ 120 VAC.
Do it Once. Do it Right.
TACO, INC., 1160 Cranston Street, Cranston, RI 02920
TACO (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3.
Visit our web site at: http://www.taco-hvac.com
96
Optional Power Wire
to Thermostat
that Requires 24VAC
Neutral
(or to "T T" on
switching relay)
Terminal Description:
Thermostat:
C Optional: Common side of transformer
to power some styles of thermostats
R Red - Hot side of transformer used to
switch all functions
Water Coil Aquastat:
TT Connect to aquastat at air handler to control operation of the fan when
in the heating mode. Install a jumper if the aquastat is not used
Freeze Protection Aquastat:
TT Connect to aquastat or thermostat to sense low ambient temperature.
Reduces the chance of pipes freezing by energizing the pump dry contacts.
Pump Dry Contacts:
XX May switch pump directly by bringing in external line voltage or connect
to "T T" on a switching relay.
Boiler Dry Contacts:
XX Connect to the boiler or "T T" terminals on a switching relay.
Air Handler:
C
R
Y
G
low
G
high
**
Model number changed from SR501-F
MAXIMUM
VOLTAGE COMBINED LOAD
5 amps
5 amps
Telephone: (401) 942-8000
Instruction Sheet
Hydro Air Fan Controls
To: Optional
THERMOSTAT
Aquastat on
Return Line of
Hydro Coil
To: Optional Aquastat
or Thermostat to sense
low ambient
temperature
C R W Y G T T T T
WATER COIL FREEZE PR
THERMOSTAT
AQUASTATS
Power On
HAFC201
Call for Heat
HYDRO AIR FAN CONTROL
Fan, Cooling
Fan, Heating
DRY CONTACTS
5 AMP 1/6 HP RATED
PUMP BOILER AIR HANDLER
G G
X X X X C R Y
Jumper
Hot
Fan
Circulator
Relay
Dry Contacts
To: "T T" on
Boiler or
Switching
M
Relay
1 Speed Air Handler*
* Both HAFC101 and 201 capable of 1 and 2 speed applications
Common side of transformer to power the Fan Control
Red - Hot side of transformer used to switch all functions
Yellow - Condenser signal
One Speed Motor:
Connect the fan to the relay. Keep the jumper installed between G
Two Speed Motor:
Remove jumper and connect G
connect G to the low speed fan relay.
low
RELAY THERMOSTAT
TYPE CURRENT
DPDT .18
DPDT .18
FAX: (401) 942-2360.
Telephone: 905/564-9422.
THERMOSTAT
Optional Power Wire
to Thermostat
that Requires 24VAC
C R W
THERMOSTAT
HAFC101
HYDRO AIR FAN CONTROL
BOILER
X X C R Y
Dry Contacts
To: "T T" on Boiler
or Switching Relay
Outdoor
Condenser
Unit
2 Speed Air Handler*
W White - Heating signal
Y Yellow - Condenser signal
G Green - Fan signal
to the high speed fan relay and
high
SINGLE PHAZE MOTOR DIMENSIONS OF ENCLOSURE
RATING (RELAY) WIDTH
1/6 HP(5A) @120VAC 4 1/4"
1/6 HP(5A) @120VAC 4 1/4"
FAX: 905/564-9436.
To: Aquastat on
Return Line of
Hydro Coil
Y G T T T
AQUASTAT
Power On
Call for Heat
Fan, Cooling
Fan, Heating
AIR HANDLER
G G
Outdoor
Condenser
Unit
M
and G .
high low
HEIGHT DEPTH
5 1/4" 2 3/4"
5 1/4" 2 3/4"
Printed in USA
Printed in USA
Copyright 1999 Copyright 1999
TACO, Inc. TACO, Inc.