First Co SPXA (cooling with electric heat) - Manual (Page 5)

5
Note: The SPX employs a random
reset timer which delays unit operation
up to 3 minutes following initial power
application. Electronic thermostats
may also employ internal reset timers
which may further delay any changes
which are made to the operation of the
unit.
2. Set fan switch to “On”, indoor
blower should operate after the reset
timer cycle is complete.
3. Return fan switch to “Auto”, indoor
blower should de-energize.
4. Set system switch to “Cool” and
lower thermostat set point to coldest
setting. The compressor should
energize as well as the outdoor fan
and indoor blower.
5. Return thermostat set-point to a
temperature warmer than room
temperature and the compressor and
outdoor fan should de-energize. The
indoor blower should remain in
operation for an additional 45
seconds, then de-energize.
Note: The SPX employs a
compressor short cycle delay (~ 3
minutes) which will not allow the
compressor to immediately restart
following shut down. Additional
delays may be experienced if using
an electronic digital thermostat.
6. Move system switch to “Heat” and
raise thermostat to a set point higher
than room temperature. The indoor
blower and electric heating
element(s) should energize.
7. Return system switch to “Off”
position
.
Note: The SPX features a low ambient
compressor lock out switch which will
not let the compressor energize in
either cooling or heat pump mode
when the outdoor ambient temperature
is below 40 degrees F.
SYSTEM CHECK
Heat Pump Units
1. Set thermostat system switch to
“Off” position and fan switch to “Auto”
position. Apply power to the SPX unit.
Note: The SPX employs a random
reset timer which delays unit
operation up to 3 minutes following
initial power application. Electronic
thermostats may also employ internal
reset timers which may further delay
any changes which are made to the
operation of the unit.
2. Set fan switch to “On”, blower
should operate after the reset timer
cycle is complete.
3. Return fan switch to “Auto”, blower
should de-energize.
4. Set system switch to “Cool” and
lower thermostat set point to coldest
setting. The compressor should
energize as well as the outdoor fan
and indoor blower.
5. Return thermostat set-point to a
temperature warmer than room
temperature and the compressor and
outdoor fan should de-energize.The
indoor blower should remain in
operation for an additional 45
seconds, then de-energize.
Note: The SPX employs a short cycle
delay (~ 3 minutes) which will not al-
low the compressor to immediately
restart following shut down. Additional
delays may be experienced if using
an electronic digital thermostat.
6. Move system switch to “Heat” and
raise thermostat to a set point slightly
higher than room temperature (less
than 2 degrees). The compressor,
outdoor fan and indoor blower should
energize.
7. Raise set point to more than 2
degrees and the electric heaters
should energize. The compressor and
condenser fan will immediately de-
energize. The compressor will remain
locked out and the electric heat
operating until the thermostat satisfies.
Note: The SPX employs a
compressor lock out which will not
allow the compressor and electric
heaters to energize at the same time.
8. Lower the set point to less than
room temperature and the system
should de-energize.
9. Return system switch to “Off”
position.
MAINTENANCE
Periodic maintenance is limited to:
1. Replacing the air filter monthly or
more frequently if unusual conditions
are encountered. Air filter size is
20" x 24" x 1" when using the factory
filter frame and 20” x 20” x 1” when
unsing the access panel.
2. Cleaning the outdoor coil of foreign
material such as lint, dust, leaves or
other obstructions as necessary.
3. Checking drain line and removing
obstructions as necessary.
If servicing or major repairs are
required, the complete unit can be
removed as follows:
1. Disconnect the electrical power
circuit supplying the unit.
2. Remove disconnect pull and low
voltage thermostat connector.
3. Remove rear access panel.
4. Remove supply duct from top of
unit.
5. Slide unit back out of sleeve.
6. Unit may be removed from closet.
To reinstall unit, use the installation
procedure outlined above.
****** WARNING ******
Replace all access panels
before turning on main power.
****** WARNING ******
It is illegal to discharge
refrigerant into the
atmosphere. Use proper
reclaiming methods and
equipment when installing or
servicing this unit. Service
should be performed by a
QUALIFIED service agency.
The refrigerant system
contained in the unit normally
requires no maintenance
since it is a closed, self-
contained system.
****** WARNING ******
SPX Heat Pump units operate
with the reversing valve
energized in the HEATING
mode. The thermostat must
be wired or configured
accordingly or the unit will not
operate properly.
**MAINTENANCE UPDATES**
For a current copy of the
Maintenance Program log on
to www.firstco.com and
look under "Product Informa-
tion"