Heat Controller HEV/H manual Troubleshooting Form, R-410A, Hev/H Series

Installation, Operation & Maintenance	HEV/H SERIES		Heat Controller, Inc.
	TROUBLESHOOTING FORM
HEATING CYCLE ANALYSIS -		PSI		SAT

		AIR
°	F	COIL

Refrigerant Type :

R-410A

R22

°F

FP2: HEATING

LIQUID LINE

°F

EXPANSION	COAX
VALVE

	°F			°F
FLASH			FP1	°		°
GAS LINE					F			F
		SENSOR						PSI
					PSI
				WATER IN			WATER OUT

°F

SUCTION

COMPRESSOR

DISCHARGE

HWG

°F

PSISAT

Look up pressure drop in I.O.M. or spec. catalog to determine flow rate.

COOLING CYCLE ANALYSIS -
		AIR
°		COIL	°
	F			F
			EXPANSION		COAX
				VALVE

PSISAT

°F

SUCTION

COMPRESSOR

DISCHARGE

HWG

°F

	°F		°F		°F
							°	F
FP2: FLASH		OTHER SIDE		FP1: CLG
GAS LINE		OF FILTR DR		LIQ LINE					PSI
						WATER IN

°F

PSI WATER OUT

PSISAT

Look up pressure drop in I.O.M. or spec. catalog to determine flow rate.

Heat of Extraction (Absorption) or Heat of Rejection =
________ flow rate (gpm) x ________ temp.diff. (deg. F) x ________ fluid factor†		= _____________
	= Suction temperature - suction saturation temp. =		(Btu/hr)
Superheat			(deg F)
Subcooling	= Discharge saturation temp. - liquid line temp. =		(deg F)
	†Use 500 for water, 485 for antifreeze.

Note: Never connect refrigerant gauges during startup procedures. Conduct water-side analysis using P/T ports to determine water flow and temperature difference. If water-side analysis shows poor performance, refrigerant troubleshooting may be required. Connect refrigerant gauges as a last resort.

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