1. Keep the air filters clean. The heating
system will operate better, more
efficiently and more economically.
2. Arrange the furniture and drapes so
that the supply air registers and the
return air grilles are unobstructed.
3. Close doors and windows. This will
reduce the heating load on the
system.
4. Avoid excessive use of kitchen &
5. Do not permit the heat generated by
television, lamps or radios to
influence the thermostat operation.
6 Except for the mounting platform,
keep all combustible articles three
feet from the furnace and vent
system.
8. Proper operation of the system with
service agency, or gas supplier):
Turn off electrical power to the
furnace and set the thermostat
lever to the lowest temperature.
Shut off the gas supply to the
furnace either at the meter or at
a manual valve in the supply
piping.
3. Remove burner door. On downflow
models, the blower door and
burner door flange must also be
removed.
4. Disconnect gas supply piping from
5. Remove screws (4) connecting the
burner tray to the center panel.
6. Disconnect wiring to the gas valve.
Make sure to mark all wires
disconnected for proper
reconnection.
7. Remove burner tray and manifold
8. Remove all screws in the unit top
plate. Remove the top plate along
with connecting pressure switch
from the unit.
9. Remove screws connecting draft
inducer to center panel. Also
remove wiring to draft inducer at
this time.
10. Remove screws (11) on perimeter
11. In an upward and forward motion,
lift heat exchanger from the unit.
12. Flush each heat exchanger tube
13. Reassemble (steps 1 through 11 in
Contact your local distributor for a
complete parts list. See enclosed
sheet.
Refer to Figure 29 for determining
cause of unit problems.
Figures 30 and 31 are complete wiring
diagrams for the furnace and power
sources.
Содержание GLH series
Страница 23: ...23 FIGURE 18 UTEC 1028 928 CONTROL BOARD TWINNING CONNECTION TWO STAGE OPERATION a099301...
Страница 27: ...27 BLOWER PERFORMANCE DATA GPH UPFLOW HORIZONTAL MODELS BLOWER PERFORMANCE DATA GLH DOWNFLOW MODELS...
Страница 28: ...28 BLOWER PERFORMANCE DATA GLJ DOWNFLOW MODELS ONLY BLOWER PERFORMANCE DATA GPJ UPFLOW HORIZONTAL MODELS...
Страница 33: ...33 FIGURE 29 TROUBLESHOOTING FLOWCHART continued on next page PREPURGE...
Страница 34: ...34 FIGURE 29 TROUBLESHOOTING FLOWCHART CONTINUED 92 22744 19 01...