Rheem RTGH-RH10DV - Page 15

15
Chapter1ProductCharacteristics
Water leakage operation flow
Pre-heating mode operation flow
Freeze Prevention control flow
Circulation Pump Shutdown
Freeze Prevention control condition
Water leakage
abnormal
Water Flow Control Valve closed
NO
Circulation Pump Shutdown
YES
HX Themistor Temp
≤ 46 ℉(8℃)
YES
NO
YES
YES
NO
HX Thermistor Temp
≤ 41 ℉(5℃)
HX Thermistor Temp
normal
HX Thermistor Temp
≤ 46 ℉(8℃)
Combustion proceed
HX Thermistor Temp
≥ 50 ℉(10℃)
HX Thermistor Temp
≥ 104 ℉(40℃)
Hot Water Thermistor normal
Hot Water Thermistor
Temp
≤ 46 ℉(8℃)
NO
Circulation Pump Running
Hot Water
Thermistor Temp
≤ 50 ℉(10℃)
Circulation Pump Shutdown
YES
NO
YES
NO
YES
NO
NO
YES
YES
NO
Exit Combustion
Circulation Pump Running
Circulation Pump Shutdown
YES(Burner ON)
Error occurs 44
Pre-heating mode
Temp setting - Δt ≥ HX
Thermistor Temp
HX Thermistor Temp ΔT
(=Max Temp-Min Temp)
< Δ 5℉(3℃)
Pre-heating Start
Error count ≥ 2 time
NO
YES
YES (Burner OFF)
NO
YES
Pre-heating Stop
NO
ΔT Setting - Install mode (HT) : LO [27℉(15℃)]
HI-1 [18℉(10℃)]
HI-2 [ 9℉( 5℃)]
Temp setting ≤ HX
Thermistor Temp
NO
FreezeProtectFlowChart
►
FreezePreventioncontrol󰘱ow
►
Waterleakageoperationflow
►
Pre-heatingmodeoperationflow