Quick Start Manual

J. CONDENSATE DRAIN
The air handler drain pan has ¾” FPT primary and
secondary connections whether used in an upflow or
horizontal configuration. Piping from each stub is to have
a 1 ½” minimum trap and each run pitched so as to
provide for adequate drainage and secondary fittings
together into a common drain when an air handler is
installed above a finished ceiling, an auxiliary drain pan
must be provided under the
unit as required by most local
buildin
g codes. The secondary drain must be piped to a
location that would provide the occupant a warning if the
primary drain is blocked.
K. AIR FILTER
Air handlers are factory equipped with an air filter. If the
return grille has its own filter, the filter installed in the air
handler should be removed. Air filter should be inspected
and cleaned or replaced as often as is necessary to
prevent restriction of air flow (minimum every three
months for normal installations). Always replace the
filter with the same type as originally furnished.
L. C
HECK TEST AND START UP
The unit should be tested after the system has been
completely installed to determine proper operation.
NOTE:
HEATING SYSTEM SHOULD NOT BE SWITCHED
ON UNTIL SYSTEM IS FILLED AND HOT WATER
COIL IN THE AIR HANDLER AND SUPPLY AND
RETURN LINES ARE VENTED.
1. Fill and pressurize the water heater and air
handler.
2. Vent air from the water tank by opening a hot
water spigot.
Energize the unit by swi
tching on the line voltage
source and the thermostat. Depending on how the
AH
G was interfaced with the heat supply, hot water
should start flowing through the water to air coil and
30 – 45 seconds after a call for heat the blower will
energize.
UNITS ARE RATED AT TEMPERATURES OF 130–
180°F. SET ENTERING WATER TEMPERATURE AT
DESIGN TEMPERATURE AND TAKE PROPER
SAFEGUARDS FOR WATER USAGE AT SUPPLY
POINTS, AS PER LOCAL CODES AND SAFETY
CONSIDERATIONS.
M. SYSTEM SHUTDOWN
For short periods of time during freezing temperatures if the
system is to be left unused, to prevent freezing of the air
handler and piping, do the following: Do not turn the system
off. Leave the air handler’s thermostat on heat setting. If the
water and air handler must be shut down for extended
periods, a qualified service technician needs to be contacted
to ensure the air handler and piping
are drained of all water as
to
prevent freeze damage.
N. PERIODIC MAINTENANCE
Inspect and clean or replace filters at least every three months
to ensure good airflow and optimum system capacity,
efficiency and life. This equipment should NEVER BE RUN
WITHOUT AN AIR FILTER IN PLACE (See AIR FILTER
Section). The blower motor is permanently lubricated.
ALWAYS disconnect power before removing access doors!
O. LOW TEMPERATURE PROTECTION – HOT
WATER COIL
The unit is equipped with two low temperature protection
thermostats located on the discharge face of the hot water
coil; these thermostats provide protection as follows:
CFP – Stops the outdoor unit (condensing unit of AC system)
if the discharge air becomes sufficiently low to cause possible
freezing of the water in the hot water coil. Cycling of this
thermostat is an indication of a problem. P
ossible causes are
inadequate air flow, blocked filter, or blocked air system.
HFP
– Provides power to the heating terminal (W) of the unit
terminal strip to start the heating equipment in the event the
air temperature above the coil becomes sufficiently low to
cause possible freezing of the water in the hot water coil.
IF THE HEATING EQUIPMENT IS TURNED OFF, SOME
PART OF THE HEATING EQUIPMENT HAS FAILED,
OR DURING POWER OUTAGES THIS THERMOSTAT
CANNOT PROVIDE NECESSARY PROTECTION AND
FR
EEZE DAMAGE COULD OCCUR. IF THESE
CIRCUMSTANCES COULD OCCUR, SEPARATE
FREEZE PROTECTION MUST BE PROVIDED.
ANTIFREEZE SOLUTION IS RECOMMENDED EXCEPT
ON POTABLE WATER SYSTEMS. ON POTABLE
WATER SYSTEMS, BACKUP HEAT MAY BE
REQUIRED TO AVOID FREEZE DAMAGE.
CFP and HFP – Thermostats are located on the discharge
of the unit. Access to these thermostats for service
replacement will require an opening in the discharge duct
with suitable replaceable cover or the discharge duct
must be removed temporarily.
UNDER NO CIRCUMSTANCES WILL THE CFP
AND /OR HFP DEVICES PROVIDE FREEZE
PROTECTION TO ANY EQUIPMENT EXTERIOR TO
THE AHG UNIT AND PROTECTION OF THE AHG
UNIT IS SUBJECT TO THE LIMITATIONS
DESCRIBED ABOVE. UNDER NO
CI
RCUMSTANCES WILL HEAT CONTROLLER,
INC., BE RESPONSIBLE FOR ANY DAMAGE
THAT MIGHT RESULT FROM FAILURE OF THESE
DEVICES OR OTHER COMPONENTS.
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