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pressure test
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  1. HVAC
    In the installation manual for a newer (somewhat higher SEER) Daikin outdoor compressor, in the "Pressure test and evacuating system" section starts off with a warning: Do not mix any substance other than the specified refrigerant R410A into the refrigeration cycle. I think most HVAC people...
  2. Plumbing
    We're renovating a 100-year-old house and have replaced nearly all the old drains with PVC. The city requires an air test of the drain system -- it has to hold 5 psi for 15 minutes. We keep having a slow leak. We've soaped everything several times over. Found leaks some times, didn't others...
  3. Electrical
    I'm wanting to run an automated air pressure test and can anyone help or recommend anything? I want it to be a cycle and open a valve for about 5 seconds and shut it off for 5 seconds, repeating this 10,000 times. As of this moment I was thinking I would need a solenoid attached to a timer...
  4. Plumbing
    We are DIY remodeling a 100 year-old house in OH. We replaced much of the existing plumbing (over 70%) with new PVC to match the new layout. The glue and primer recommended for PVC were used. All lines were "water tested" with no leaks. Inspector requires a pressure test of drain & vent lines...
  5. Plumbing
    I installed a new furnace (previously there was a gas wall heater) and ran about 20' of 3/4" black pipe with a shut-off, drip-leg, etc. at the furnace. I noticed on my inspection card there is a pressure test required. Can anyone tell me what I will probably have to do for this? Will the...
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