G50.G5-N2
If
the control is locked out, it may be reset by momentary power
interruption of
1/20
second or longer. Either the 24v thermostat
or line voltage may be interrupted.
MAINTENANCE
The manufacturer recommends that maintenance is periormed
by a qualified service agency for cleaning venUair intakes,
condensate drains and neutralizers, burners, prima-ry and sec
ondary heat exchangers and the blower motor _and wheel
assembly. Examine the condensate collection tubing for any
kinks or blockage. An annual inspection of these components
is recommended.
Air Filters
The filters should be checked periodically for dirt accumulation.
Dirty filters greatly restrict the flow of air and overburden the
system.
Clean the filters at least every three months. See page
4
for
filter removal instructions. On new construction, check the
filters every week for the first four weeks. Inspect the filters at
least every three weeks after that, especially if the system is
running constantly.
Air filters supplied with the furnace are the high-velocity, clean
able type. Clean these filters by washing in warm water. Make
sure to shake all the water out of the filter and have it reason
able dry before installing it in the furnace. When re�l�cing
filters,
be
sure to use the same size and type as ong1nally
supplied.
Lubrication
Blower motors in these furnaces are permanently lubricated
and do not require periodic oiling.
Burner RemovaVCieaning
The main burners should be checked periodically for dirt accu
mulation.
If
cleaning is required, follow the steps listed below:
1.
Turn off the electrical power to the unit.
2.
Remove the upper access door.
3.
Remove the front cover of the burner box.
4.
Remove burners by applying pressure to burner :etention
spring until burner can be removed from the hole tn burner
support plate.
5.
Slide burner down and off the orifice, leaving the retention
spring in place.
6.
Burners may be cleaned by rinsing in hot water.
7.
Reassemble the burners in the reverse order.
C
lea
ni
n
g the Primary Heat Exchanger
1.
Turn off the main manual gas valve extern?! to the furnace.
2.
Turn off the electrical power to the furnace.
4.
Disconnect the gas supply piping and control wiring from
the gas valve.
5.
Remove the screws holding the burner box assembly to
the vestibule panel.
6.
Remove the burner box assembly.
7.
Remove the burner restrictor plate to gain access to the
upper portion of the heat exchanger.
8.
To reach the lower portion of the heat exchanger, remove
the flue box cover and flue baffles.
9.
With a stiff wire brush, brush out loose scale or soot.
10.
Vacuum the burner assembly and heat exchanger.
11.
Replace all parts removed for cleaning by reversing the
order of disassembly.
12.
Reconnect all wiring and gas piping.
13.
Restore electrical power and gas supply to the furnace.
Cleaning the Se-condary �at Exchanger
1.
Follow steps
1
thru 10 under "Cleaning the Primary Heat
Exchanger.•
2.
Remove the vent piping from the venter housing. Discon
nect the drain lines from the venter and from the conden
sate drain pan. Remove the venter blower and the
condensate pan. The turbulators can then be gently re
moved from the secondary heat exchanger.
3.
With a stiff wire brush, brush out loose scale or soot.
4.
Vacuum the secondary heat exchanger.
5.
Finish the cleaning procedure by following steps
11
thru
13
under "Cleaning the Primary Heat Exchanger.
•
VENT/AIR INTAKE
Should it be necessary to service the venUair intake system,
the manufacturer recommends this service be conducted by a
qualified service agency.
The instructions on Page
7
of this instruction specify cementing
all joints except the junction at the inQ_ucer blower housing. This
joint is to sealed with
RTV.
The operation of this appliance requires the reassembly and
resealing of the vent/air intake system as specified
on
Page
7.
BLOWER CARE
Even with good filters properly in place, blower wheels and
motors will become dust laden after long months of operation.
The entire blower assembly should be inspected annually. If
the motor and wheel are heavily coat-ed with dust, they can be
brushed and cleaned with a vacuum cleaner.
The procedure for removing the blower as£)embly for cleaning
is as follows:
·
1.
Disconnect the electricl3.t supply to the furnace.
