Installation guide

REQUIRED FOR
ACCESSORY SEACOAST APPLICATIONS
(WITHIN 2 MILES)
Coastal Filter Yes
Support Feet Recommended
Puron® Balance-Port Hard Shutoff TXV Yesl-
Puron® Liquid-Line Solenoid Valve for Heating No
Table 2--Accessory Usage
REQUIRED FOR LONG-LINE
APPLICATIONS*
(OVER 50 FT)
No
No
Yesl
KHALS0401LLS
* For tubing line sets between 50 and 175 ft horizontal or 20 ft vertical differential refer to Application Guideline and Service Manual--Air Conditioners and Heat Pumps
Using Puron® Refrigerant. Crankcase heater and start assist are standard on two-speed units.
1 Required for all applications.
SWEAT CONNECTION
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To prevent damage to unit or service valves, observe the
following:
• Use a brazing shield.
• Wrap service valves with wet cloth or use a heat sink
material.
Braze sweat connections using industry accepted methods and
materials. Do not use soft solder (materials which melt below
800°F). Consult local code requirements.
LEAK CHECKING
Leak test all joints in indoor, outdoor, and refrigerant robing.
EVACUATE REFRIGERANT TUBING AND INDOOR (;OIL
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To avoid compressor damage, never use the system compres-
sor as a vacuum pump.
Refrigerant tubes and indoor coil nmst be evacuated to 500
microns.
IMPORTANT: Never open system under vacuum to atmosphere
without first breaking it open with nitrogen.
Deep Vacuum Method
The deep vacuum method requires a vacuum pump capable of
pulling a mininmm vacuum of 500 microns and a vacuum gage or
thermistor capable of accurately measuring this vacuum depth. The
deep vacuum method is the most positive way of assuring a system
is free of air and liquid water. (See Fig. 10.)
FINAL TUBING CHECK
IMPORTANT: Check to be certain factory tubing on both indoor
and outdoor unit has not shifted during shipment. Ensure tubes are
not rubbing against each other or any sheet metah Pay close
attention to feeder tubes, making sure wire ties on feeder tubes are
secure and tight.
Step 8--Make Electrical Connections
To avoid personal injury or death, do not supply power to unit
with compressor terminal box cover removed.
Be sure field wiring complies with local and national fire, safety,
and electrical codes, and voltage to system is within limits shown
on unit rating plate. Contact local power company for con'ection of
improper voltage. See unit rating plate for recommended circuit
protection device.
NOTE: Operation of unit on improper line voltage constitutes
abuse and could affect unit reliability. See unit rating plate. Do not
install unit in system where voltage may fluctuate above or below
permissible limits.
NOTE: Use copper wire only between disconnect switch and
unit.
NOTE: Install branch circuit disconnect of adequate size per
NEC to handle unit starting cun'ent. Locate disconnect within sight
from and readily accessible from unit, per Section 440-14 of NEC.
ROUTE GROUND AND POWER WIRES
Remove access panel and control box cover to gain access to unit
wiring. Extend wires from disconnect through power wiring hole
provided and into unit control box. Size wires per NEC but not
smaller than nlininmm wire size shown in Product Data Digest.
The unit cabinet must have as uninten'upted or unbroken
ground to minimize personal injury if an electrical fault
should occur. The ground may consist of electrical wire or
metal conduit when installed in accordance with existing
electrical codes. Failure to follow this warning can result in an
electric shock, fire, or death.
CONNECT GROUND AND POWER WIRES
Connect ground wire to ground connection in control box for
safety. Connect power wiring to leads provided as shown in Fig.
11.
CONNECT CONTROL WIRING
Route 24v control wires through control wiring grommet and
connect to leads provided in control box. (See Fig. 12.)
Use No. 18 AWG color-coded, insulated (35°C minimum) wire. If
thermostat is located more than 100 ft fi'om unit, as measured
along the control voltage wires, use No. 16 AWG color-coded wire
to avoid excessive voltage drop.
All wiring must be NEC Class 1 and nmst be separated from
incoming power leads.
The outdoor unit requires a minimum of 27-va, 24v control power.
FINAL WIRING CHECK
IMPORTANT: Check factory wiring and wire connections to
ensure temlinations are secured properly. Check wire routing to
ensure wires are not in contact with tubing, sheet metal, etc.
Step 9--Install Electrical Accessories
GENERAL
Refer to the individual instructions packaged with kits or acces-
sories when installing. The liquid line solenoid valve accessory is
available on these units. See Fig. 13 for wiring diagrmn.
Step 10--Make Airflow Selections
---->AIRFLOW SELECTION FOR 58CVA 58CVX FURNACES
The 58CVAi58CVX Non-Condensing Variable Speed Furnaces
provide high- and low-speed blower operation to match the