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Model ERCH-HP Energy Recovery Unit
Line Voltage. Check at unit disconnect.
L1-L2 Volts L2-L3 Volts L1-L3 Volts
Motor Amp Draw
Supply Motor Amps L1 Amps L2 Amps L3 Amps
Exhaust Motor Amps L1 Amps L2 Amps L3 Amps
Fan RPM
Supply Fan RPM
Exhaust Fan RPM
Correct fan rotation direction?
Supply Fan Yes / No
Exhaust Fan Yes / No
Energy Wheel Motor
L1 Amps L2 Amps L3 Amps
Compressors
Compressor 1 L1 Amps L2 Amps L3 Amps
Crankcase Heater Amps
Compressor 2 L1 Amps L2 Amps L3 Amps
Crankcase Heater Amps
Condensing Fans
Condensing Fan 1 L1 Amps L2 Amps L3 Amps
Condensing Fan 2 L1 Amps L2 Amps L3 Amps
Condensing Fan 3 L1 Amps L2 Amps L3 Amps
Outdoor Air Temperature Deg F
Return Air Temperature Deg F
Outdoor Air Relative Humidity % RH
Return Air Relative Humidity % RH
Superheat Deg F
Should be between 8º and 12ºF
Subcooling Deg F Should be between 12º and 17ºF
Discharge Pressure PSIG Should be between 200 and 280 PSIG for R22 or 300 and 500 PSIG for R410a
Suction Line Pressure PSIG Should be between 60 and 80 PSIG for R22 or 100 and 135 PSIG for R410a
Liquid Line Temp Deg F
Suction Line Temp Deg F
Moisture Indicating Sight Glass Liquid Visible? Yes / No Color of Center Dot: Green / Yellow
Hot Gas Bypass Operational Yes / No
Unit Start-Up Checklist