bernie
28-01-2003, 02:36 AM
I have very little experience trouble shooting refrigerant flow problems on heat pumps. So let me give you guys a crack at it.
After evacuating and recharging unit, start up unit(10 min run time):
suction press:65#
head press 248#
suc temp @ inlet of water heat exchanger 46F
suc temp @ outlet of water heat exchanger 75F
suc temp @ comp ahead of reversing valve 77F
discharge line temp ahead of reversing valve 175F
discharge line temp downsteam of rev valve 175F
water temp inlet 80F
water temp outlet 75F
Seems to me suction superheat is high, discharge air temp is 90F, also seems low.
Return air @ 65-70" (*store is in very negative pressure).
This is the 2nd stage compressor in a 2 stage unit.
1st stage is inoperable, blockage in refrigerant circuit.
Got 2nd stage going to provide some heat to space and
will have to return to repair first stage.
Thanks
Bernie
M# HWH-CCH120CMFS
S# 7 7L0809110
After evacuating and recharging unit, start up unit(10 min run time):
suction press:65#
head press 248#
suc temp @ inlet of water heat exchanger 46F
suc temp @ outlet of water heat exchanger 75F
suc temp @ comp ahead of reversing valve 77F
discharge line temp ahead of reversing valve 175F
discharge line temp downsteam of rev valve 175F
water temp inlet 80F
water temp outlet 75F
Seems to me suction superheat is high, discharge air temp is 90F, also seems low.
Return air @ 65-70" (*store is in very negative pressure).
This is the 2nd stage compressor in a 2 stage unit.
1st stage is inoperable, blockage in refrigerant circuit.
Got 2nd stage going to provide some heat to space and
will have to return to repair first stage.
Thanks
Bernie
M# HWH-CCH120CMFS
S# 7 7L0809110