Daz man
23-10-2013, 10:15 AM
Morning,
A very simple question!
I have a gas fired 'Reznor' AHU with a retro fit cooling battery which has four stages of cooling.
The four stages are Airedale condensers - twin condenser fan, single Copeland compressors.
Each stage has obviously an expansion valve.
The valves are Danfoss externally equalised TE5's with a number 3 orifice.
Question is - when pressure testing with OFN, would you expect to see a slight pressure drop between high pressure side and low pressure side of the system?
When gauges are closed off I have 150psi (10.34 Bar) HP side then 100psi (6.89 Bar) LP side
Many thanks
A very simple question!
I have a gas fired 'Reznor' AHU with a retro fit cooling battery which has four stages of cooling.
The four stages are Airedale condensers - twin condenser fan, single Copeland compressors.
Each stage has obviously an expansion valve.
The valves are Danfoss externally equalised TE5's with a number 3 orifice.
Question is - when pressure testing with OFN, would you expect to see a slight pressure drop between high pressure side and low pressure side of the system?
When gauges are closed off I have 150psi (10.34 Bar) HP side then 100psi (6.89 Bar) LP side
Many thanks