Noritz NH-1501-DV, Инструкция по установке и эксплуатации

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*1 When "Priority1" and "Priority2" both call for heat, the boiler gives priority to the "Priority 1" circuit.
*2 If the unit does not directly supply power to the circulator, an external control capable of providing a pump
shut-off delay of 20 seconds or more must be used. Damage will occur to the boiler if the circulator
shuts-off too soon after the burner shuts off.
When the boiler provides power directly to the circulator, it automatically allows the circulator to run for
approximately 20 seconds after the burner shuts off.
*3 A flow rate of 2.5 GPM or more is required to activate the water flow switch. If the water flow switch is not
turned on for a continuous 60 seconds, boiler operation is stopped.
Priority1 (Indirect tank) operation
"Priority1"
calls for heat (*1)
Remote controller
"Power" switch
is turned on.
NO
NO
NO
NO
NO NO
NO
NO
NO
NO
YES
Power is supplied to the
"Priority1" circulator.
The boiler sets the output temperature to
the "Priority 1" setting.
The boiler is activated.
Water flow switch
is turned on. (*3)
･ Error message "113" may be displayed at first until the air is bled from the gas piping.
If error message "113" is displayed, set the POWER switch to the off position, then set it back to the on position.
･ If the boiler does not operate normally, refer to “Troubleshooting” in the user's information manual.
* White smoke may be noticed from the exhaust vent during cold weather. However, this is not a malfunction of the unit.
The water temperature
is below the combustion
start temperature.
Operation stops ( *2)
The water temperature
is more than the combustion
stop temperature.
YES
YES
YES
YES YES
YES
YES
YES
YES
Return Return
The water temperature
is more than the combustion
stop temperature.
The boiler sets the output temperature to
the "Priority 2" setting.
The boiler is activated.
The water temperature
is below the combustion
start temperature.
Water flow switch
is turned on. ( *3)
Power is supplied to the
"Priority2" circulator.
"Priority2"
calls for heat (*1)
Remote controller
"Power" switch
is turned on.
Priority2 (Heating) operation
Operation stops ( *2)
14.
Trial Operation
The installer should test operate the unit, explain to
the customer how to use the unit, and give the owner
this manual before leaving the installation.
• Preparation ........... (1) Open the gas supply valve.
(2) Turn on the power supply.