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  1. Commercial HVAC Forum
    I read a articular that was posted about converting system from R22 to R410A .Where they talking about replacing the meting device in the air handler or the evaporator coil & if so, where did they find a device for 410A? Also how much changes has there been from R22 systems to the R410A...
  2. General HVAC Discussion
    I installed an Air temp 3 ton r22 condeser and a 3 Ton Acoil by Nordyne Model # for a coil is c7bam03648c-c. The condenser is looking for a .073 piston and the one with the acoil is .067..The style of the pistons are very different The a coil piston is very tiny not the normal looking...
  3. General HVAC Discussion
    hello. certified tech here , im getting familiar with this refigerant but i would like a little help on how to throttle it in for a recharge, like for instance '' topping it off '' . i know to add it in slowly , but for how long dont want to damage the compressor i know to do the superheat and...
1-3 of 3 Results