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INSTALLATION INSTRUCTIONS
ASA13
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to
the potential for personal injury or death.
WARNING
Installation and servicing of air conditioning equipment
can be hazardous due to internal refrigerant pressure
and live electrical components. Only trained and
qualified service personnel should install or service
this equipment. Installation and service performed by
unqualified persons can result in property damage,
personal injury, or death.
WARNING
ELECTRICAL SHOCK HAZARD!
Risk of electrical shock. Disconnect all
remote power supplies before installing
or servicing any portion of the system.
Failure to disconnect power supplies
can result in property damage, personal
injury, or death.
WARNING
Sharp metal edges can cause injury. When installing
the unit, use care to avoid sharp edges.
Charging information is given on the charging procedure
sticker on the unit access panel.
Comfort-Aire / Century
1900 Wellworth Ave.
Jackson, MI 49203
508489M01
This manual must be left with the homeowner for future reference.
NOTICE
Single Stage Air Conditioner
Table of Contents
General ........................................................................2
Installation ...................................................................5
Refrigeration Piping .....................................................6
Electrical Wiring .........................................................15
Start-Up .....................................................................18
Homeowner Information ............................................19
Maintenance ..............................................................19
Wiring Diagram ..........................................................21
General
Read this entire instruction manual, as well as the
instructions supplied in separate equipment, before
starting the installation. Observe and follow all warnings,
cautions, instructional labels, and tags. Failure to comply
with these instructions could result in an unsafe condition
and/or premature component failure.
These instructions are intended as a general guide only
for use by qualified personnel and do not supersede any
national or local codes in any way. The installation must
comply with all provincial, state, and local codes as well as
the National Electrical Code (U.S.) or Canadian Electrical
Code (Canada). Compliance should be determined prior
to installation.
This ASA13 outdoor air conditioner with all-aluminum coil
is designed for use with R-454B refrigerant only.This unit
must be installed with an approved indoor air handler or
coil.
*P508489M01*
Issue 2425
(P) 508489M01
Page 1 of 22
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Related Manuals for COMFORT-AIRE ASA13
Summary of Contents for COMFORT-AIRE ASA13
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Page 1: Table Of Contents
Code (Canada). Compliance should be determined prior to installation. NOTICE This ASA13 outdoor air conditioner with all-aluminum coil Charging information is given on the charging procedure is designed for use with R-454B refrigerant only.This unit sticker on the unit access panel. -
Page 2: Refrigerating System
CAUTION CAUTION Under no circumstances shall potential sources of Servicing shall be performed only as recommended by ignition be used in the searching for or detection of the manufacturer. refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used. The following leak detection methods are deemed acceptable for all refrigerant systems. - Page 3 IMPORTANT IMPORTANT Verify cabling will not be subject to wear, When removing refrigerant from a system, either for corrosion,excessive pressure, vibration, sharp edges servicing or decommissioning, it is recommended or any other adverse environmental effects. good practice that all refrigerants are removed safely. When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.
- Page 4 IMPORTANT IMPORTANT Exhaust vents from dryers, water heaters and furnaces The Clean Air Act of 1990 bans the intentional venting should be directed away from the outdoor unit. of refrigerant (CFCs, HCFCs and HFCs) as of July Prolonged exposure to exhaust gases and the chemicals 1, 1992.
- Page 5 STEP 1 SETTING THE UNIT - Clearances See NOTES NOTES - Service clearance of 30 in. (762 mm) must be maintained on one of the sides adjacent to the control box. Clearance to one of the other three sides must be 36 in. (914 mm). Clearance to one of the remaining two sides may be 12 in.
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Page 6: Step 2 Refrigerant Piping
Flush the existing line set per the following instructions. For more information, refer to the Installation and Service IMPORTANT Procedures manual. This model is designed for use in check / expansion CAUTION - DO NOT attempt to flush and re-use existing valve systems only. - Page 7 Secondary Sensor Installation If secondary refrigerant sensor is required, it shall be WARNING mounted as follows: Upflow Applications: Mounted on an unused side furnace Polyolester (POE) oils used with R-454B refrigerant return air connection at least 9 inches above the floor and absorb moisture very quickly.
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Page 8: Installation
LINE SET IMPORTANT — Refrigerant lines must not contact structure. INSTALLATION REFRIGERANT LINE SET — INSTALLING Line Set Isolation - The following illustrations are VERTICAL RUNS (NEW CONSTRUCTION SHOWN) examples of proper refrigerant line set isolation: NOTE - Insulate liquid line when it is routed through areas where the surrounding ambient temperature could become higher than the REFRIGERANT LINE SET —... - Page 9 STEP 2 – REFRIGERANT PIPING – Removing Existing Indoor Metering Device TYPICAL EXISTING FIXED ORIFICE TYPICAL EXISTING EXPANSION VALVE REMOVAL REMOVAL PROCEDURE PROCEDURE (UNCASED COIL SHOWN) (UNCASED COIL SHOWN) STUB END TWO-PIECE PATCH PLATE LIQUID LINE CHECK DISTRIBUTOR TUBES (UNCASED COIL ONLY) ORIFICE EXPANSION LIQUID LINE ORIFICE HOUSING...
- Page 10 STEP 2 – REFRIGERANT PIPING – Brazing Procedures CAP AND CORE REMOVAL CUT AND DEBUR Cut ends of the refrigerant lines square (free from nicks or dents) Remove service cap and core from and debur the ends. The pipe must remain round. Do not crimp end both the vapor and liquid line service of the line.
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Page 11: Braze Line Set
WRAP SERVICE VALVES To help protect service valve seals during brazing, wrap water-saturated cloths around service valve bodies and copper tube stubs. Use additional water-saturated cloths underneath the valve body to protect the base paint. FLOW NITROGEN Flow regulated nitrogen (at 1 to 2 psig) through the refrigeration gauge set into the valve stem port connection on the liquid service valve and out of the vapor valve stem port. - Page 12 Refrigerant Piping - Install Indoor Expansion Valve This outdoor unit is designed for use in systems that include an expansion valve metering device (purchased separately) at the indoor coil. See the Product Specifications for approved expansion valve kit match-ups and application information. The check expansion valve unit can be installed inside the cabinet.
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Page 13: Test For Leaks
STEP 3 – LEAK TEST AND EVACUATION (Continued) LEAK TEST HIGH MANIFOLD GAUGE SET OUTDOOR UNIT TO VAPOR SERVICE VALVE NOTE - Position canister to deliver liquid refrigerant. NITROGEN R-454B CONNECT GAUGE SET A - Connect the high pressure hose of an R-454B manifold gauge set to the vapor valve service port. NOTE - Normally, the high pressure hose is connected to the liquid line port. -
Page 14: Evacuate The System
STEP 3 – LEAK TEST AND EVACUATION (Continued) EVACUATION HIGH CONNECT GAUGE SET NOTE - Remove cores from service valves (if not already done). A - Connect low side of manifold gauge set with 1/4 SAE in-line tee to vapor line service valve B - Connect high side of manifold gauge set to OUTDOOR MANIFOLD... -
Page 15: Electrostatic Discharge
STEP 4 – ELECTRICAL – Circuit Sizing and Wire Routing In the U.S.A., wiring must conform with current local codes WARNING and the current National Electric Code (NEC). In Canada, wiring must conform with current local codes and the Fire Hazard. Use of aluminum wire with this product may current Canadian Electrical Code (CEC). -
Page 16: Electrical Wiring
Refer to the furnace or blower coil Installation Instructions Electrical Wiring for additional wiring application diagrams and refer to unit rating plate for minimum circuit ampacity and maximum All field wiring must be done in accordance with the National overcurrent protection size. Electrical Code (NEC) recommendations, Canadian 1. -
Page 17: Step 5 - Unit Start-Up
IMPORTANT STEP 5 – UNIT START-UP To prevent stripping of the various caps used, the IMPORTANT appropriately sized wrench should be used and fitted If unit is equipped with a crankcase heater, it should snugly over the cap before tightening. be energized 24 hours before unit start-up to prevent Using Manifold Gauge Set compressor damage as a result of slugging. -
Page 18: Start-Up
Stem cap protects the valve stem from damage and serves as the primary seal. Replace the stem cap and tighten as follows: Detailed information is given in the ASA13 Installation and 1/12 TURN Service Procedures manual, which is available on With torque wrench, finger tighten and then torque cap per table 2. -
Page 19: Homeowner Information
Heating Demand NOTE - The filter and all access panels must be in place any time the unit is in operation. If you are unsure about the 1 - Prompt a heating demand at the thermostat. filter required for your system, call your licensed contractor 2 - Observe the following sequence: for assistance. - Page 20 2 - Check the cleanliness of outdoor fan and blade the refrigerant charge per the charging sticker information condition (cracks) and clean or replace them, if on the outdoor unit. necessary. 2 - Verify that system total static pressure and airflow settings are within specific operating parameters.
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Page 21: Wiring Diagram
Wiring Diagram FIGURE 18. AC Single Phase Wiring Diagram 508489M01 Issue 2425 Page 21 of 22... - Page 22 R-454B Refrigerant Pressure - Temperature Chart Saturated Saturated Saturated Saturated Saturated Saturated Saturated Saturated Pressure Pressure Pressure Pressure Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor (psig) (psig) (psig) (psig) Temp (°F) Temp (°F) Temp (°F) Temp (°F) Temp (°F) Temp (°F) Temp (°F) Temp (°F)
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