background image

Manual 2100-526H
Page 

13 of 24

START UP

These units require R-410A refrigerant and Polyol Ester 
oil.

GENERAL

1.  Use separate service equipment to avoid cross 

contamination of oil and refrigerants.

2.  Use recovery equipment rated for R-410A 

refrigerant.

3.  Use manifold gauges rated for R-410A (800 

psi/250 psi low).

4.  R-410A is a binary blend of HFC-32 and HFC-125.
5.  R-410A is nearly azeotropic - similar to R-22 and 

R-12.  Although nearly azeotropic, charge with 
liquid refrigerant.

6.  R-410A operates at 40-70% higher pressure than 

R-22, and systems designed for R-22 cannot 
withstand this higher pressure.

7.  R-410A has an ozone depletion potential of zero, 

but must be reclaimed due to its global warming 
potential.

8.  R-410A compressors use Polyol Ester oil.
9.  Polyolester oil is hygroscopic; it will rapidly absorb 

moisture and strongly hold this moisture in the oil.

10. A liquid line dryer must be used - even a deep 

vacuum will not separate moisture from the oil.

11. Limit atmospheric exposure to 15 minutes.
12. If compressor removal is necessary, always plug 

compressor immediately after removal.  Purge with 
small amount of nitrogen when inserting plugs.

TOPPING OFF SYSTEM CHARGE

If a leak has occurred in the system, Bard 
Manufacturing recommends reclaiming, evacuating 
(see criteria above), and charging to the nameplate 
charge.  Topping off the system charge can be done 
without problems.
With R-410A, there are no significant changes in the 
refrigerant composition during multiple leaks and 
recharges.  R-410A refrigerant is close to being an 
azeotropic blend (it behaves like a pure compound 
or single component refrigerant).  The remaining 
refrigerant charge, in the system, may be used after 
leaks have occurred and then “top-off” the charge by 
utilizing the pressure charts on the inner control panel 
cover as a guideline.

REMEMBER:  

When adding R-410A refrigerant, it 

must come out of the charging cylinder/tank as a liquid 
to avoid any fractionation, and to insure optimal system 
performance.  Refer to instructions for the cylinder that 
is being utilized for proper method of liquid extraction.

SAFETY PRACTICES

1.  Never mix R-410A with other refrigerants.
2.  Use gloves and safety glasses, Polyol Ester oils can 

be irritating to the skin, and liquid refrigerant will 
freeze the skin.

3.  Never use air and R-410A to leak check; the 

mixture may become flammable.

4.  Do not inhale R-410A – the vapor attacks 

the nervous system, creating dizziness, loss 
of coordination and slurred speech.  Cardiac 
irregularities, unconsciousness and ultimate death 
can result from breathing this concentration.

5.  Do not burn R-410A.  This decomposition produces 

hazardous vapors.  Evacuate the area if exposed.

6.  Use only cylinders rated DOT4BA/4BW 400.
7.  Never fill cylinders over 80% of total capacity.
8.  Store cylinders in a cool area, out of direct 

sunlight.

9.  Never heat cylinders above 125°F.
10. Never trap liquid R-410A in manifold sets, gauge 

lines or cylinders.  R-410A expands significantly 
at warmer temperatures.  Once a cylinder or line is 
full of liquid, any further rise in temperature will 
cause it to burst.

Содержание THE WALL-MOUNT WA3S3-A

Страница 1: ...NSTRUCTIONS WA3S3 A WA3S3 B WA3S3 C WA4S3 A WA4S3 B WA4S3 C WA5S3 A WA5S3 B WA5S3 C WL3S2 A WL3S2 B WL3S2 C WL4S2 A WL4S2 B WL4S2 C WL5S2 A WL5S2 B WL5S2 C Bard Manufacturing Company Inc Bryan Ohio 43...

Страница 2: ...3 General 13 Topping Off System Charge 13 Safety Practices 13 Important Installer Note 14 Crankcase Heaters 14 High and Low Pressure Switch 14 Three Phase Scroll Compressor Start Up Information 14 Ser...

Страница 3: ...d Manual N Summer Air Conditioning Low Pressure Low Velocity ACCA Manual D or Duct System Design for Winter Manual Q and Summer Air Conditioning For more information contact these publishers ACCA Air...

Страница 4: ...in 480V units only VOLTS PHASE A 230 208 1 B 230 208 60 3 C 460 60 3 KW 0Z No KW w Circuit Breaker or Pull Disconnect 05 5 KW 06 6 KW 08 8 KW 09 9 KW 10 10 KW 15 15 KW 20 20 KW VENTILATION OPTIONS B...

Страница 5: ...scale I A C K 2 13 H J 2 63 9 06 P M L O E 44 W 5 75 F G R S S S S S T D Return Air Opening MIS 2488 B Drain Inlet Air Air Outlet Front View Side View Cond 1 Back View Condenser Bracket Installation B...

Страница 6: ...1 1 28 29 38 56 40 40 40 60 10 10 8 6 10 10 10 10 WA L4S C0Z C06 C09 C15 460 3 1 1 1 1 15 16 21 30 20 20 25 30 12 12 10 10 12 12 10 10 WA L5S A0Z A05 A08 A10 A15 A20 230 208 1 1 1 1 1 or 2 1 or 2 1 or...

Страница 7: ...ons thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage Refer to Table 10 for maximum static pressure availab...

Страница 8: ...ting rigidity the return air and supply air frames or collars can be drilled and screwed or welded to the structural wall itself depending upon wall construction Be sure to observe required clearance...

Страница 9: ...nded that a bead of silicone caulking be placed behind the side mounting flanges and under the top flashing at the time of installation B 16 16 16 16 16 1 7 8 6 1 2 6 1 2 2 1 8 7 8 1 3 4 Typ 4 Typ 6 1...

Страница 10: ...IR MIS 548 A SIDE VIEW I A C K E 1 000 B 1 000 SUPPLY DUCT OVER FRAME INTERIOR FINISHED WALL ALL AROUND DUCT FRAMING MATERIAL EXTERIOR FINISH WALL OPENING FOR ACTUAL DIMENSIONS 2 x 4 S 2 x 6 S OR STRU...

Страница 11: ...WALL OPENING W GRILLE SUPPLY DUCT MAYBE LOCATED IN AN ATTIC OR BELOW CEILING RAFTERS AS SHOWN CEILING RAIN RETURN AIR SLEEVE WALL SUPPLY AIR DUCT RAFTERS RAFTERS RETURN AIR OPENING W GRILLE RAIN FALSE...

Страница 12: ...CE Part Number Predominate Features 8403 060 1120 445 3 stage Cool 3 stage Heat Programmable Non Programmable Electronic HP or Conventional Auto or Manual changeover 8403 058 TH5220D1151 2 stage Cool...

Страница 13: ...rigerant composition during multiple leaks and recharges R 410A refrigerant is close to being an azeotropic blend it behaves like a pure compound or single component refrigerant The remaining refriger...

Страница 14: ...he Phase Monitor section later in this manual Verification of proper rotation must be made any time a compressor is change or rewired If improper rotation is corrected at this time there will be no ne...

Страница 15: ...ng When the delay on make is complete and the high pressure and low pressure switches are closed the compressor contactor is energized Upon shutdown the delay or break timer starts and prevents restar...

Страница 16: ...erve whether unit is operating in high cool or low cool when utilizing the charts This unit employs high flow Coremax valves instead of the typical Shrader type valves WARNING Do NOT use a Schrader va...

Страница 17: ...another click as the solenoid returns to its original position 3 If clicks can t be heard shut off power and remove the control circuit molded plug from the compressor and measure the solenoid coil re...

Страница 18: ...h this refrigerant charge quantity The following pressure tables show nominal pressures for the units Since many installation specific situations can affect the pressure readings this information shou...

Страница 19: ...465 146 492 148 519 85 DB 72 WB Low Side High Side 137 216 139 237 140 258 141 279 142 300 143 321 146 346 148 370 151 395 153 419 155 447 157 474 158 502 160 529 LOW CAPAPACITY COOLING AIR TEMPERATU...

Страница 20: ...it s air noise cabinet duct or motor noise interview customer if necessary Air noise High static creating high blower speed Is airflow set properly Does removing filter cause blower to slow down Check...

Страница 21: ...g and press it into the socket until it latches A SLIGHT CLICK WILL BE HEARD WHEN PROPERLY INSERTED Finish installing the replacement control per one of the three following paragraphs 8a 8b or 8c 8a I...

Страница 22: ...at Will occur automatically with a call for W1 signal from thermostat Will occur automatically with a call for W2 or Emergency Heat signal from thermostat TABLE 9 INDOOR BLOWER PERFORMANCE Model Rated...

Страница 23: ...er Package X EHWA5S A15 Heater Package X EHWA5S A20 Heater Package X EHWA3S B06 Heater Package X EHWA5S B06 Heater Package X X EHWA5S B09 Heater Package X X X EHWA5S B15 Heater Package X X X EHWA5S C0...

Страница 24: ...r Package X EHWA5S A15L Heater Package X EHWA5S A20L Heater Package X EHWA3S B06L Heater Package X EHWA5S B06L Heater Package X X EHWA5S B09L Heater Package X X X EHWA5S B15L Heater Package X X X EHWA...

Отзывы: