Installation guide

eitherheatingordefrostmodes,themotorwill
modifyitsairflowoutput,if necessary,toprovide
anairflowwhichisdefinedassafeforthe
operationoftheelectricheaterduringheatpump
operation.Thatairflowisthegreateroftheheat
pumpheatingairflowandtheelectricheateronly
airflow.
h.HEATINGMODE-SUPERCOMFORTHEAT
OPERATION
NOTE:Theindoorcontrolused,suchasaThermidistat,mustbe
capableof providingSuperComfortHeatoperationmodeand
controlmustbe configuredas outlinedin its installation
instructions.Thesystemmustbeinstalledwithappropriateoutdoor
temperaturesensor.Consultindoorcontrolliteraturetodetermineif
controlis capableandfor configurationinstructions.Consult
indoorcontrolinstructionsandsensorinstructionsfor sensor
installationdetails.
Iftheoutdoortemperatureisintherangeof12°Fto40°F(-11°C
to4°C),theThermidistatclosescircuitR toY/Y2andopens
circuitRtoG.If circuitRtoGisclosed(24-v.),themotorwill
deliverairflowatthefullheatingrequestedvalue.If circuitRtoG
isopen(0-v.)formaximumheatingcomfort,themotordelivers
reducedairflowtomaximizethetemperatureandminimizethe
drafteffectoftheheatedairleavingtheunit.
SPECIAL PROCEDURES FOR 208-V OPERATION
1. Be sure unit disconnect switch is open.
2. Disconnect the yellow primary lead (w 110) from the
transformer. See unit wiring label. (See Fig. 13 or 14 and
17,)
3. Connect the yellow primary lead (w110) to the transformer
terminal labeled 200-v.
PRE-START-UP
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal iniury,
death or property damage.
1. Follow recognized safety practices and wear protective
goggles when checking or servicing refrigerant system.
2. Do not operate compressor or provide any electric power
to unit unless compressor terminal cover is in place and
secured.
3. Do not remove compressor terminal cover until all
electrical sources are disconnected and tagged.
4. Relieve and recover all refrigerant from system before
touching or disturbing anything inside terminal box if
refrigerant leak is suspected around compressor
terminals.
5. Never attempt to repair soldered connection while
refrigerant system is under pressure.
6. Do not use torch to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective goggles and
proceed as follows:
a. Shut off electrical power to unit and install lockout
tag.
b. Relieve and reclaim all refrigerant from system
using both high- and low-pressure ports.
c. Cut component connecting tubing with tubing
cutter and remove component from unit.
d. Carefully unsweat remaining tubing stubs when
necessary. Oil can ignite when exposed to torch
flame.
Use the Start-Up Checklist supplied at the end of this book and
proceed as follows to inspect and prepare the unit for initial
start-up:
1. Remove all access panels.
2. Read and follow instructions on all DANGER, WARNING,
CAUTION, and INFORMATION labels attached to, or
shipped with, unit.
3. Make the following inspections:
a. Inspect for shipping and handling damages such as
broken lines, loose parts, disconnected wires, etc.
b. Inspect for oil at all refrigerant tubing connections and
on unit base. Detecting oil generally indicates a
refrigerant leak. Leak-test all refrigerant tubing
connections using electronic leak detector, or
liquid-soap solution. If a refrigerant leak is detected, see
following Check for Refrigerant Leaks section.
c. Inspect all field and factory-wiring connections. Be sure
that connections are completed and tight.
d. Inspect coil fins. If damaged during shipping and
handling, carefully straighten fins with a fin comb.
4. Verify the following conditions:
a. Make sure that outdoor-fan blade is correctly positioned
in fan orifice.
b. Make sure that air filter(s) is in place.
c. Make sure that condensate drain pan and trap are filled
with water to ensure proper drainage.
d. Make sure that on the 060 size, only the 2 wire ties
fastened to the outdoor coils and reversing
valve/accumulator have been removed.
e. Make sure that all tools and miscellaneous loose parts
have been removed.
5. Compressors are internally spring mounted. Do not loosen
or remove compressor hold-down bolts.
6. Each unit system has 2 Schrader-type ports, one low-side
Schrader fitting located on the suction line, and one
high-side Schrader fitting located on the compressor
discharge line. Be sure that caps on the ports are tight.
1/8" (3 ram) MAX BETWEEN MOTOR SHAFT
MOTOR AND FAN HUB
A08474
Fig. 22 - Fan Blade Clearance
Step 1 -- Start-Up
CHECKING COOLING AND HEATING CONTROL
OPERATION
Start and check the unit for proper control operation as follows:
(1.) Place room thermostat SYSTEM switch or MODE
control in OFF position. Observe that blower
motor starts when FAN mode is placed in FAN ON
position and shuts down according to time delay
selected on the Easy Select board (See Easy Select
Section) when FAN MODE switch is placed in
AUTO position.
(20 Thermostat:
When the room temperature rises to a point that is
slightly above the cooling control setting of the
thermostat, the thermostat completes the circuit
between thermostat terminal R to terminals Y, O
and G.These completed circuits through the
thermostat connect contactor coil (C) (through unit
16