calorex heat pump(r134a converting to R22 )

[moideen]

dear all

i have a heatpump calorex model AW7034BHC.R134a.tandem compressor model:copeland zr12m3e.problem is the both compressors are defective.right now the same tandem compressor not available in DUBAI,have to wait 2 month.but work has to be completed immediately.i am thinking to convert to R22 sytem.fixing single same capacity compressor instead of tandem.replacing txv,flshing the circuit...etc.but is it possible a 134a system to R22 system?if ,which ZR series compressor i can use for this job?

any help would be appreciated
Moideen-Dubai

[Brian_UK]

You will lose about 10°C of the heating capacity if you run on R22 according to Calorex.

Some data on pages 5 & 6 of this...
http://www.calorex.com/pool-heating/...coolv5_000.pdf

[moideen]

thanks Brian, somebody advise me to install ZR190KCE(R134A same refrigerant), can i overcome this issue? if not could you tell me which compressor is appropriate fro zr series single compressor using 134 a.

Moideen-Dubai

[moideen]

We are going to replace the heatpump (considering the maintenance cost), not calorex, as per the document heat pump capacity is 70 kw.i dont know whether it is correct.becaust as per the compressor calculation ,compressor capacity is 10 ton. can anybody tell me what the actual heating capacity of calorex AW703BHC.

moideen-Dubai

[Brian_UK]

The heat output clue is in the unit reference, but please read the document in the link already given and you will see the list of duties.

[c4ble]

Hi guys, is it possible to use the R22 equivalent compressor and change the oil to make it work on R134a?

I have problems getting R134a(R407C) compressors as these are always not in stock. The R22 equivalent are be easily available though.

ie. Sanyo Scroll CSCN753H8H(R22) replace with CSC753H8H(R407C) with an oil change.

Anyone can enlighten on this? Thanks.

[Kompulsa]

Hi guys, is it possible to use the R22 equivalent compressor and change the oil to make it work on R134a?

I have problems getting R134a(R407C) compressors as these are always not in stock. The R22 equivalent are be easily available though.

ie. Sanyo Scroll CSCN753H8H(R22) replace with CSC753H8H(R407C) with an oil change.

Anyone can enlighten on this? Thanks.

I also need an answer to that question.