LAARS NeoTherm LC NTV1700 - Users Manual - Manual (Page 8)

LAARS Heating Systems Page 6
SHUTTING DOWN THE NEOTHERM LC
it may sometimes be necessary to shut down the neotherm LC. here are the steps required to do this:
1. switch off the main electrical disconnect switch.
2. (Model 1000) remove the front access panel and close the main manual gas valve.
(Model 1700) turn oFF the main manual gas valve. the valve is top left on the back.
3. if freezing is anticipated, drain the neotherm LC. (also be sure to protect the piping in the building
from freezing.)
The steps listed above may require qualified service personnel.
RESTARTING THE NEOTHERM LC
it may be necessary to restart the neotherm LC – for example, after a power interruption. here are the steps
required to do this:
1 reset any errors using the user interface. see the section on “about Lockouts, holds, and alerts.”
2 turn up the thermostat to call for heat.
3. In approximately 2 seconds, the blower will operate. Ignition should occur after 35-40 seconds. It may
take as long as 2-1/2 minutes.
4. if ignition does not occur, wait 5 minutes and then repeat steps 1 through 3.
5. if, after three attempts, the unit still does not light, shut down the boiler and call your service technician.
if the unit has been drained, follow these steps:
1. See the “Installation and Operation Manual” for instructions on filling and purging the unit.
2. (Model 1000) remove the front access panel and turn on the main manual gas valve.
(Model 1700) turn oFF the main manual gas valve. the valve is top left on the back.
3. switch on the main electrical disconnect switch. the pump and blower will start, and the igniter will be
energized. after 35 seconds the gas valve will be energized, and ignition will occur. if ignition does not
occur within 2-1/2 minutes switch “off” the main disconnect switch, wait 5 minutes and switch it “on”
again. if after three attempts ignition does not occur, shut down the unit and call for service.
IN THE EVENT OF POWER FAILURE
the neotherm LC will not operate during an electrical power outage. if there is an extended power outage
with danger of freezing, then the neotherm LC (and all other water systems) should be completely drained.
Before draining the unit, turn off the gas and turn off the main power switch. When you replace the unit in
service, refer to the “Installation and Operation Manual” for instructions on filling and purging.