
Thermistor-Air
less than 37
゚
F (3
)
Thermistor-Air
less than 28
゚
F (-2
)
Heaters turn ON
Has 50 min passed
Heaters turn OFF
Has 5 min passed
Heaters turn ON
Has 20 min passed
Heaters turn OFF
Has 15 min passed
C
C
YES
YES
YES
YES
YES
YES
YES
NO
YES
NO
NO
NO
NO
NO
NO
Thermistor-Air
more than 14
゚
F (-10
)
C
YES
NO
Thermistor-Air
more than 14
゚
F (-10
)
Thermistor-Air
more than 14
゚
F (-10
)
NO
NO
YES
Thermistor-Air
more than 14
゚
F (-10
)
Thermistor-Air
normal
301,302 / 30
Heaters turn ON
7
Freeze Prevention Control
<NR501-OD, NR662-OD>
Freeze prevention heater
21
゚C
゚C
゚C
゚C
゚C
゚C
Содержание NRC661-DV
Страница 17: ...NR501 OD NR662 OD Thermistor Cold Water Thermistor Hot Water Gas Proportioning Valve 17...
Страница 19: ...19 5 Operation Flow Chart Water heating Shutdown procedure Ignition operation NR501 OD...
Страница 20: ...Water heating Shutdown procedure Ignition operation 20 NR662 OD...
Страница 70: ...the Heat Exchanger must be flushed is set to Flushing Mode from an authorized Noritz wholesaler 70...
Страница 71: ...located 71...