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Table Of Contents
- Installation Instructions
- SAFETY CONSIDERATIONS
- GENERAL
- 1. Locate unit away from windows, patios, decks, etc. where unit operation sound may disturb customer.
- 2. Ensure that vapor and liquid tube diameters are appropriate for unit capacity.
- 3. Run refrigerant tubes as directly as possible by avoiding unnecessary turns and bends.
- 4. Leave some slack between structure and unit to absorb vibration.
- 5. When passing refrigerant tubes through the wall, seal opening with RTV or other pliable silicon-based caulk. (See Fig. 1.)
- 6. Avoid direct tubing contact with water pipes, duct work, floor joists, wall studs, floors, and walls.
- 7. Do not suspend refrigerant tubing from joists and studs with a rigid wire or strap which comes in direct contact with tubing (see Fig. 1).
- 8. Ensure that tubing insulation is pliable and completely surrounds vapor tube.
- 9. When necessary, use hanger straps which are 1 in. (25.4 mm) wide and conform to shape of tubing insulation. (See Fig. 1.)
- 10. Isolate hanger straps from insulation by using metal sleeves bent to conform to shape of insulation.
- Fig. 1 – Piping Installation
- Installation
- Check Equipment and Job Site
- Install on a Solid, Level Mounting Pad
- Clearance Requirements
- Operating Ambient
- Make Piping Connections
- Fig. 2 – Tiedown Knockout Locations
- Outdoor Unit Connected to Factory Approved Indoor Unit
- Refrigerant Tubing Connection Outdoor
- Sweat Connection
- Install Liquid-Line Filter Drier Indoor
- Evacuate Refrigerant Tubing and Indoor Coil
- Deep Vacuum Method
- Final Tubing Check
- Installing with Indoor Piston
- Fig. 5 – Indoor (Cooling) Piston
- 1. Operate unit a minimum of 15 minutes before checking charge.
- 2. Measure liquid service valve pressure by attaching an accurate gage to service port.
- 3. Measure liquid line temperature by attaching an accurate thermistor type or electronic thermometer to liquid line near outdoor coil.
- 4. Refer to unit rating plate for required subcooling temperature.
- 5. Refer to Table 2 - Rating Plate (required) Subcooling Temperature. Find the point where required subcooling temperature intersects measured liquid service valve pressure.
- 6. To obtain required subcooling temperature at a specific liquid line pressure, add refrigerant if liquid line temperature is higher than indicated or reclaim refrigerant if temperature is lower. Allow a tolerance of 3°F (1.7°C).
- Fig. 5 – Indoor (Cooling) Piston
- Units with Indoor Piston
- 1. Operate unit a minimum of 15 minutes before checking charge.
- 2. Measure suction pressure by attaching an accurate gage to suction valve service port.
- 3. Measure suction temperature by attaching an accurate thermistor type or electronic thermometer to suction line at service valve.
- 4. Measure outdoor air dry-bulb temperature with thermometer.
- 5. Measure indoor air (entering indoor coil) wet-bulb temperature with a sling psychrometer.
- 6. Refer to Table 3 - Superheat Charging - AC Only. Find outdoor temperature and evaporator entering air wet-bulb temperature. At this intersection, note superheat. Where a dash (--) appears on the table, do not attempt to charge system under these c...
- 7. Refer to Table 4 - Required Suction-Line Temperature. Find superheat temperature (from #6 above) and suction pressure. At this intersection, note suction line temperature.
- 8. If unit has a higher suction line temperature than charted temperature, add refrigerant until charted temperature is reached.
- 9. If unit has a lower suction line temperature than charted temperature, reclaim refrigerant until charted temperature is reached.
- 10. When adding refrigerant, charge in liquid form into suction service port using a flow-restricting device.
- 11. If outdoor air temperature or pressure at suction valve changes, charge to new suction line temperature indicated on chart.
- 12. Optimum performance will be achieved when the operating charge produces 10°F suction superheat at suction service valve with 95°F (35°C) outdoor ambient and 80°F (27°C) dry bulb (67°F / 19°C) wet bulb) indoor temperature (DOE “A” test ...
- Table 2 – Rating Plate (required) Subcooling Temperatures
- Table 3 – Superheat Charging - AC Only
- Table 4 – Required Suction-Line Temperature
- Make Electrical Connections
- Compressor Crankcase Heater
- Install Electrical Accessories
- Start-Up
- Follow these steps to properly start up system:
- 1. After system is evacuated, fully open liquid and vapor service valves.
- 2. Unit is shipped with valve stem(s) front seated (closed) and caps installed. Replace stem caps after system is opened to refrigerant flow. Replace caps finger-tight and tighten with wrench an additional 1/12 turn.
- 3. Close electrical disconnects to energize system.
- 4. Set room thermostat at desired temperature. Be sure set point is below indoor ambient temperature.
- 5. Set room thermostat to COOL and fan control to ON or AUTO mode, as desired. Operate unit for 15 minutes. Check system refrigerant charge.
- 3-Phase Monitor
- Sequence of Operation
- Follow these steps to properly start up system:
- Check Charge
- Final Checks
- 1. Ensure that all wiring is routed away from tubing and sheet metal edges to prevent rub-through or wire pinching.
- 2. Ensure that all wiring and tubing is secure in unit before adding panels and covers. Securely fasten all panels and covers.
- 3. Tighten service valve stem caps to 1/12-turn past finger tight.
- 4. Leave Owner’s Manual with owner. Explain system operation and periodic maintenance requirements outlined in manual.
- 5. Fill out Dealer Installation Checklist and place in customer file.
- CARE AND MAINTENANCE
PA13*A, PA14NC, PA15NC, PA16N*: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
9
A02326A/A97368
Fig. 8 – Generic Wiring Diagrams (See Thermostat Installation Instruction for specific unit combinations)
Table 8 – Accessory Usage
ACCESSORY
REQUIRED FOR LOW-AMBIENT COOLING
APPLICATIONS
(Below 55
F/12.8°C)
REQUIRED FOR LONG LINE
APPLICATIONS
*
*.For tubing line sets between 80 and 200 ft. (26.7 and 60.96 m) and/or 35 ft. (10.7 m) vertical differential, refer to Residential Piping and Longline Guideline.
REQUIRED FOR
SEA COAST
APPLICATIONS
(Within 2 miles/3.22 km)
Ball Bearing Fan Motor
Yes
†
†.Additional requirement for Low-Ambient Controller (full modulation feature) MotorMaster® Control.
No No
Compressor Start Assist Capacitor and Relay Yes Yes No
Crankcase Heater Yes Yes No
Evaporator Freeze Thermostat Yes No No
Hard Shut-Off TXV Yes Yes No
Liquid Line Solenoid Valve No No No
Motor Master
or Low-ambient Pressure
Switch
Yes No No
Support Feet Recommended No Recommended
Winter Start Control
Yes
‡
‡.Required if Low Pressure Switch is factory or field installed.
No No
24 VAC HOT
24 VAC COM
R
C
G
W/W1
Y/Y2
R
C
C
A/C
THERMOSTAT
Typical
FAN COIL
AIR
CONDITIONER
G
W2
HEAT STAGE 1
COOL STAGE 1
INDOOR FAN
24 VAC HOT
24 VAC COM
R
C
G
W/W1
Y/Y2
R
C
C
A/C
THERMOSTAT
Typical
FURNACE
AIR
CONDITIONER
Y
G
W
HEAT STAGE 1
COOL STAGE 1
INDOOR FAN