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Tempstar C4A3, Installation Instructions Manual

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Tempstar C4A3 Installation Instructions Manual Download Page 11

INSTALLATION INSTRUCTIONS

R

−

410A Split System Air Conditioner

421 01 5103 00

11

Figure 11

Typical Thermostat Connections

24 VAC HOT

24 VAC COM

R

C

G

W/W1

Y/Y2

R

C

C

THERMOSTAT

FURNACE

Y

G

W

HEAT STAGE 1

COOL STAGE 1

INDOOR FAN

AIR CONDITIONER

24 VAC HOT

24 VAC COM

R

C

G

W/W1

Y/Y2

R

C

C

THERMOSTAT

FAN COIL

Y

G

W2

HEAT STAGE 1

COOL STAGE 1

INDOOR FAN

AIR CONDITIONER

24 VAC HOT

24 VAC COM

R

C

G

W/W1

Y/Y2

R

C

THERMOSTAT

FAN COIL

Y

G

W2

HEAT STAGE 1

COOL STAGE 1

INDOOR FAN

AC with Comfort Alert

C

Y

Summary of Contents for C4A3

Page 1: ...manner The signal word CAUTION is used throughout this manual in the following manner Signal Words on Product Labeling Signal words are used in combination with colors and or pictures on product labels WARNING Safety Labeling and Signal Words CAUTION WARNING TABLE OF CONTENTS Inspect New Unit 2 Safety Considerations 2 Location 2 Clearances 2 3 Unit Support 4 Refrigeration System 5 9 Electrical Wir...

Page 2: ...intakes vents or bedroom windows Noise may carry into the openings and disturb people inside Locate unit in a well drained area or support unit high enough so that water runoff will not enter the unit Locate unit away from areas where heat lint or exhaust fumes will be discharged onto unit as from dryer vents Locate unit away from recessed or confined areas where recirculation of discharge air may...

Page 3: ...Wall 6 152mm 24 610mm Service Wall Wall Wall 6 152mm 6 152mm Post Wall Wall 18 457mm 18 457mm 18 457mm 18 152mm 6 152mm 6 152mm 6 152mm 18 457mm 18 457mm 18 457mm 18 457mm 24 610mm Service 24 610mm Service 24 610mm Service 24 610mm Service 24 610mm Service 24 610mm Service 4 102mm 4 102mm wide fence 18 457mm 18 457mm ...

Page 4: ...t roof locate unit minimum 6 inches 152mm above roof level Place the unit over one or more load bearing walls If there are several units mount them on platforms that are self supporting and span several load bearing walls These suggestions are to minimize noise and vibration transmission through the structure If the structure is a home or apartment avoid locating the unit over bedrooms or study NO...

Page 5: ...IN OD SMALLER 10 O Clock 2 O Clock 7 8 Installing with Indoor Piston cooling operation Check piston size shipped with indoor unit to see if it matches required indoor piston size If it does not match replace indoor piston with correct piston size Indoor pistons are shipped with some outdoor models in the accessory bag and are only qualified for Piston fan coils Example fan coils with piston FEM4P ...

Page 6: ... and open all flow control devices including solenoid valves C ROUTING AND SUSPENDING REFRIGERANT LINES Run refrigerant lines as straight and direct as possible avoiding unnecessary bends and turns Always insulate the entire suction line Both lines should be insulated when routed through an attic or when routed through an underground raceway When routing refrigerant lines through a foundation or w...

Page 7: ...he factory Outdoor units are shipped with a refrigerant charge sealed in the unit Leave the service valves closed until all other refrigerant system work is complete or the charge will be lost Leave the plugs in place until line set tubing is ready to be inserted Service valve bodies are brass and tube stubs are copper Figure 7 Service Valve VALVE CORE SERVICE VALVE G BRAZING CONNECTIONS NOTE Remo...

Page 8: ...tem is free of air and water Watch the vacuum gauge as the system is pulling down The response of the gauge is an indicator of the condition of the system refer to Figure 8 With no leaks in the system allow the vacuum pump to run for 30 minutes minimum at the deep vacuum level Figure 8 Deep Vacuum Gauge Response and System Conditions 500 MINUTES 0 1 2 4 6 1000 1500 LEAK IN SYSTEM VACUUM TIGHT TOO ...

Page 9: ...wrench and back out the stem by turning the hex wrench counterclockwise Turn the stem until it just contacts the rolled lip of the valve body After the refrigerant charge has bled into the system open the Liquid service valve NOTE These are not back seating valves It is not necessary to force the stem tightly against the rolled lip The service valve cap is a primary seal for the valve and must be ...

Page 10: ...ine Voltage connections with raintight conduit and fittings Most codes require a disconnect switch outdoors within sight of the unit Consult local codes for special requirements Route electrical supply Line Voltage wiring through knockout hole in bottom of Control Box Connect wires to Contactor and Ground Lug according to Wiring Diagram on unit Refer to Figure 10 Route thermostat wiring through ru...

Page 11: ... W W1 Y Y2 R C C THERMOSTAT FURNACE Y G W HEAT STAGE 1 COOL STAGE 1 INDOOR FAN AIR CONDITIONER 24 VAC HOT 24 VAC COM R C G W W1 Y Y2 R C C THERMOSTAT FAN COIL Y G W2 HEAT STAGE 1 COOL STAGE 1 INDOOR FAN AIR CONDITIONER 24 VAC HOT 24 VAC COM R C G W W1 Y Y2 R C THERMOSTAT FAN COIL Y G W2 HEAT STAGE 1 COOL STAGE 1 INDOOR FAN AC with Comfort Alert C Y ...

Page 12: ... by adding or removing 0 6 oz ft 17 g mm of 3 8 liquid line above or below 15 feet 4 6 m respectively For standard refrigerant line lengths 80 feet 24 4m or less allow system to operate in cooling mode at least 15 minutes If conditions are favorable check system charge by super heat method for fixed metering device and subcooling method for TXV If any adjustment is necessary adjust charge slowly a...

Page 13: ... 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 Figure 12 Find outdoor temperature and evaporator entering air wet bulb temperature At this intersection note superheat Where a dash appears on the table d...

Page 14: ...er these conditions or refrigerant slugging may occur Charge must be weighed in Note Superheat F is at low side service port Allow a tolerance of 3 F 1 7 C Note Indoor dry bulb between 70 F and 80 F 21 C and 27 C Figure 13 Required Suction Line Temperature SUPERHEAT TEMP _F SUCTION PRESSURE AT SERVICE PORT PSIG 107 8 112 2 116 8 121 2 126 130 8 138 8 140 8 145 8 0 35 37 39 41 43 45 47 49 51 2 37 3...

Page 15: ...6 30 84 29 82 28 80 27 308 92 33 90 32 88 31 86 30 84 29 82 28 317 94 34 92 33 90 32 88 31 86 30 84 29 326 96 36 94 34 92 33 90 32 88 31 86 30 335 98 37 96 36 94 34 92 33 90 32 88 31 345 100 38 98 37 96 36 94 34 92 33 90 32 364 104 40 102 39 100 38 98 37 96 36 94 34 374 106 41 104 40 102 39 100 38 98 37 96 36 384 108 42 106 41 104 40 102 39 100 38 98 37 395 110 43 108 42 106 41 104 40 102 39 100 3...

Page 16: ... voltage lead wires are provided in the control box for connection to thermostat wires use wire nuts The Comfort Alert device operates by monitoring the compressor power leads and the thermostat demand signal Y terminal Figure 15 Comfort Alertt Diagnostics some models 24 VAC Common Thermostat Demand Compressor Wires Pass Through Holes 3 MAINTENANCE Condensate Drain During the cooling season check ...

Page 17: ...h open go to Flash Code 2 information 2 If low pressure switch open go to Flash Code 1 information 3 Thermostat demand signal is intermittent 4 Loose wiring at contactor coil Yellow ALERT Flash Code 4 Locked Rotor 1 Run capacitor has failed 2 Low line voltage contact utility if voltage at disconnect is low 3 Excessive liquid refrigerant in compressor 4 Compressor bearings are seized Yellow ALERT F...

Page 18: ...refrigerants is only compatible with POE oils Vacuum pumps will not remove moisture from oil Do not use liquid line filter driers with rated working pressures less than 600 psig Do not install a suction line filter drier in liquid line POE oils absorb moisture rapidly Do not expose oil to atmosphere POE oils may cause damage to certain plastics and roofing materials Wrap all filter driers and serv...

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