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9

R--410A REFRIGERANT QUICK REFERENCE GUIDE

S

R--410A refrigerant operates at 50--70 percent higher pressures than R--22. Be sure that servicing equipment and replacement

components are designed to operate with R--410A refrigerant

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R--410A refrigerant cylinders are rose colored.

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Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.

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R--410A refrigerant systems should be charged with liquid refrigerant. Use a commercial type metering device in the manifold hose

when charging into suction line with compressor operating

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Manifold sets should be 700 psig high side and 180 psig low side with 550 psig low--side retard.

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Use hoses with 700 psig service pressure rating.

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Leak detectors should be designed to detect HFC refrigerant.

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R--410A refrigerant, as with other HFCs, is only compatible with POE oils.

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Vacuum pumps will not remove moisture from oil.

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Do not use liquid--line filter driers with rated working pressures less than 600 psig.

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Do not leave R--410A suction line filter driers in line longer than 72 hours.

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Do not install a suction--line filter drier in liquid line.

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POE oils absorb moisture rapidly. Do not expose oil to atmosphere.

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POE oils may cause damage to certain plastics and roofing materials.

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Wrap all filter driers and service valves with wet cloth when brazing.

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A factory approved liquid--line filter drier is required on every unit.

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Do NOT use an R--22 TXV.

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If indoor unit is equipped with an R--22 TXV or piston metering device, it must be changed to a hard shutoff R--410A TXV.

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Never open system to atmosphere while it is under a vacuum.

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When system must be opened for service, recover refrigerant, evacuate then break vacuum with dry nitrogen and replace filter driers.

Evacuate to 500 microns prior to recharging.

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Do not vent R--410A refrigerant into the atmosphere.

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Do not use capillary tube coils.

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Observe all

warnings

,

cautions

, and

bold

text.

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All indoor coils must be installed with a hard shutoff R--410A TXV metering device.

Always Ask For

PA

17N

A

Содержание PA17NA

Страница 1: ...electrical disconnect switch must be in the OFF position There may be more than 1 disconnect switch Lock out and tag switch with a suitable warning label INSTALLATION RECOMMENDATIONS NOTE In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment 1 Locate unit away from windows patios decks etc where unit operation sound may disturb customer 2 ...

Страница 2: ... 12 78_C and the maximum outdoor operating ambient in cooling mode is 125_F 51 67_C when operating voltage is 230v For 208v applications the maximum outdoor ambient is 120_F NOTE Units operating at high stage operation 208v or below line voltage and at an outdoor ambient 120_F or greater may experience compressor trip Make Piping Connections WARNING PERSONAL INJURY AND ENVIRONMENTAL HAZARD Failure...

Страница 3: ... Pumps using R 410A refrigerant Install Liquid Line Filter Drier Indoor CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation 1 Installation of filter drier in liquid line is required 2 Filter drier must be wrapped in a heat sinking material such as a wet cloth while brazing Refer to Fig 3 and install filter drier as follows 1 Braze 5 in liq...

Страница 4: ...than 100 ft 30 48 m from 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 must be separated from incoming power leads Use furnace transformer fan coil transformer or accessory transformer for control power 24v 40va minimum NOTE Use of available 24v accessories may exceed the minimum 40va power require...

Страница 5: ...et point is below indoor ambient temperature and is set low enough to energize desired stage In order to start the system in low stage refer to the literature for the installed thermo stat and adjust the set point so that the differential between the room temperature and the set temperature energizes Y1 5 Set room thermostat to COOL and fan control to ON or AUTO mode as desired 6 Operate unit for ...

Страница 6: ... periodic maintenance requirements outlined in manual 5 Fill out Dealer Installation Checklist and place in customer file TROUBLESHOOTING If the compressor fails to operate with a cooling call the table below Resistance table can be used to verify if there is any damage to the compressor windings causing system malfunction Table 3 Winding Resistance Winding Winding resistance at 70_F 20_F 21 11_C ...

Страница 7: ...as a 24 volt coil and is controlled by Y1 input from the thermostat High and Low Pressure Switches High and low pressure switches are provided in line with the Y1 signal to the contactor for protection The high pressure switch mounted on the liquid tube is set to open at 670 psi and higher and the low pressure switch mounted on the suction tube opens at a pressure of 50 psi and lower CARE AND MAIN...

Страница 8: ...Two Stage Air Conditioner Thermidistat Variable Speed Fan Coil TWO STAGE AIR CONDITIONER THERMIDISTAT Thermidistat w Variable Speed Fan Coil 2 Stage Air Conditioner Thermidistat w Variable Speed Furnace 2 Stage Air Conditioner Fig 6 Thermidistat Wiring with 2 Stage R 410A refrigerant Air Conditioner A09278 Single Stage Furnace with 2 Stage Air Conditioner A09279 2 Stage Thermostat with Single Stag...

Страница 9: ... filter driers with rated working pressures less than 600 psig S Do not leave R 410A suction line filter driers in line longer than 72 hours S Do not install a suction line filter drier in liquid line S POE oils absorb moisture rapidly Do not expose oil to atmosphere S POE oils may cause damage to certain plastics and roofing materials S Wrap all filter driers and service valves with wet cloth whe...

Страница 10: ...ing S 7310 W Morris St S Indianapolis IN 46231 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No IM PA17NA 02 Replaces IM PA17NA 01 Edition Date 09 12 PA17NA ...

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