Laars NTH, Инструкция по установке и эксплуатации

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N
EO
T
HERM
Boilers and Water Heaters
label and turn on the gas and electrical power to the
appliance.
4. Turn the NeoTherm on.
5. The NeoTherm unit will begin the start sequence.
The blower and pump will energize for the pre-purge
period, then the ignition sequence will start. After all
safety devices have been verified, the gas valve will
open. If ignition doesn’t occur, turn off the NeoTherm,
and check that there is proper gas supply. Wait 5
minutes before restarting.
6. Follow Section 8.10 for set up of Combustion Mixture.
7. After placing the appliance in operation, the Burner
Safety Shutoff Device must be tested
:
• Close the gas shutoff valve with the burner operating.
• The flame will go out and the blower will
continue to run for the post purge cycle. One
or three additional attempts to light will follow.
Each cycle will include pre-purge, ignitor on,
valve/flame on, and post purge. Ignition will not
occur because the gas is off. The ignition control
will lockout.
• Open the gas shutoff valve. Reset the boiler
control by pressing the Reset button on the
control or on the display. Restart the appliance.
The ignition sequence will start again and the
burner will start. The appliance will return to its
previous mode of operation.
DANGER
If you detect any odor of gas, or if the gas burner
does not appear to be functioning in a normal
manner, CLOSE THE MAIN SHUTOFF VALVE.
Do not shut off the switch. Contact your heating
contractor, gas company, or factory representative.
9.3 Shutting Down the NeoTherm Unit
1. Turn off the main electrical disconnect switch.
2. Close all manual gas valves.
3. If you think the NeoTherm unit might freeze, drain it.
All water must be removed from the heat exchanger,
or damage from freezing may occur. Also be sure to
protect the piping in the building from freezing.
Caution
This step must be performed by a qualified service
person.
9.4 Restarting the NeoTherm Unit
If the unit has been drained, see Section 9.1 in this
manual for instructions on filling and purging the unit
properly, before continuing.
1. Turn off the main electrical disconnect switch.
2. Close all manual gas valves.
3. WAIT FIVE (5) MINUTES.
4. Set the aquastat or thermostat to its lowest setting.
5. Open all manual gas valves.
6. Reset all safety switches (pressure switch, manual reset
high limit, etc.).
7. Set the temperature controller to the desired
temperature setting, and switch on electrical power.
8. The burner will go through a prepurge period and
ignitor warm-up period, followed by ignition.