Placement & Installation; Start-Up; Heating System Service Checks - Haier GE NF80US Service Manual

Placement & Installation
Make sure unit is installed in accordance with installation
instructions and applicable codes.

Start-Up

Heating Start-Up
WARNING
Shock and burn hazard.
NF80US units are equipped with a hot surface ignition
system. Do not attempt to light manually.
Gas Valve Operation (Figure 15)
1. STOP! Read the safety information at the beginning
of this section.
2. Set the thermostat to the lowest setting.
3. Turn off all electrical power to the unit.
4. This furnace is equipped with an ignition device which
automatically lights the burners. Do not try to light the
burners by hand.
5. Remove the access panel.
6. Move gas valve switch to OFF. See Figure 15.
7. Wait five minutes to clear out any gas. If you then
smell gas, STOP! Immediately call your gas supplier
from a neighbor's phone. Follow the gas supplier's
instructions. If you do not smell gas go to next step.
8. Move gas valve switch to ON. See Figure 15.
MANIFOLD PRESSURE
ADJUSTMENT SCREW
(under barbed fitting)
INLET
PRESSURE
PORT
GAS VALVE SHOWN IN ON POSITION
Figure 15. Gas Valve
9. Replace the access panel.
10. Turn on all electrical power to to the unit.
11. Set the thermostat to desired setting.
NOTE: When unit is initially started, steps 1 through
11 may need to be repeated to purge air from gas line.
12. If the appliance will not operate, follow the instructions
"Turning Off Gas to Unit" and call your service
technician or gas supplier.
Turning Off Gas to Unit
1. Set the thermostat to the lowest setting.
2. Turn off all electrical power to the unit if service is to
be performed.
3. Remove the upper access panel.
4. Move gas valve switch to OFF position. Do not force.
See Figure 15.
5. Replace the upper access panel.
Safety or Emergency Shutdown
Disconnect main power to unit. Close manual and main
gas valves.
Extended Period Shutdown
Turn off thermostat or set to "UNOCCUPIED" mode.
Close all gas valves (both internal and external to unit) to
guarantee no gas leaks into combustion chamber. Turn
off power to unit. All access panels and covers must be in
place and secured.

Heating System Service Checks

C.S.A. Certification
All units are C.S.A. design certified without modifications.
Refer to the NF80US Operation and Installation Instruction.
Gas Piping
Gas supply piping should not allow more than 0.5" W.C.
drop in pressure between gas meter and unit. Supply gas
pipe must not be smaller than unit gas connection.
Compounds used on gas piping threaded joints should be
MANIFOLD
resistant to action of liquefied petroleum gases.
PRESSURE
OUTLET
PORT Testing Gas Piping
If a flexible gas connector is required or allowed by
the authority that has jurisdiction, black iron pipe shall
be installed at the gas valve and extend outside the
furnace cabinet.
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CAUTION
31-5000735 Rev. 0