Installation Guide

507332-01Page 30 of 35 Issue 1723
A80DF1E / 80G1DFE 110*C20 Performance (Less Filter)
External
Static
Pressure
in. w.c.
Air Volume / Watts at Various Blower Speeds
High Medium-High Medium Medium-Low Low
cfm watts cfm watts cfm watts cfm watts cfm watts
0.00 2410 625 2095 405 1875 295 1700 225 1635 180
0.10 2385 630 2100 410 1830 310 1610 240 1505 190
0.20 2325 650 2010 440 1760 330 1570 255 1375 195
0.30 2280 675 1940 460 1705 340 1500 260 1320 210
0.40 2235 690 1895 475 1635 365 1440 285 1265 225
0.50 2165 710 1845 490 1595 380 1380 300 1200 235
0.60 2125 735 1800 510 1545 390 1320 310 1170 250
0.70 2090 740 1755 530 1510 405 1285 325 1100 260
0.80 2035 760 1700 540 1460 425 1255 345 1030 275
Service
ELECTRICAL SHOCK, FIRE, OR EXPLOSION
HAZARD
Failure to follow safety warnings exactly could result in
dangerous operation, serious injury, death or property
damage.
Improper servicing could result in dangerous operation,
serious injury, death, or property damage. Before
servicing, disconnect all electrical power to furnace.
When servicing controls, label all wires prior to
disconnecting. Take care to reconnect wires correctly.
Verify proper operation after servicing.
WARNING
At the beginning of each heating season, a qualied
technician should check the system as follows:
Blower
Check the blower wheel for debris and clean if necessary.
The blower motors are pre-lubricated for extended bearing
life. No further lubrication is needed.
The blower access panel must be securely in place
when the blower and burners are operating. Gas fumes,
which could contain carbon monoxide, can be drawn
into living space resulting in personal injury or death.
WARNING
Filters
Filters are installed external to the unit. Filters should
be inspected monthly. Clean or replace the lters when
necessary to ensure that the furnace operates properly.
Replacement lters must be rated for high velocity airow.
Flue And Chimney
1. Check ue pipe, chimney and all connections for
tightness and to make sure there is no blockage.
2. Check unit for proper draft.
Electrical
1. Check all wiring for loose connections.
2. Check for the correct voltage at the furnace (furnace
operating). Correct voltage is 120VAC.± 10%.
3. Check amp draw on the blower motor with inner blower
panel in place.
Unit Nameplate___________ Actual______________
Cleaning the Heat Exchanger and Burners
NOTE: Use papers or protective covering in front of the
furnace during cleaning.
1. Turn off both electrical and gas power supplies to
furnace.
2. Remove ue pipe and top cap (some applications top
cap can remain) from the unit.
3. Label the wires from gas valve, rollout switches,
primary limit switch and make-up box then disconnect
them.
4. Remove the screws that secure the combustion air
inducer/pressure switch assembly to the collector box.
Carefully remove the combustion air inducer to avoid
damaging blower gasket. If gasket is damaged, it must
be replaced to prevent leakage.
5. Remove the collector box located behind the
combustion air inducer. Be careful with the collector
box gasket. If the gasket is damaged, it must be
replaced to prevent leakage.
6. Disconnect gas supply piping. Remove the screw
securing the burner box cover and remove cover.
Remove the four screws securing the burner manifold
assembly to the vestibule panel and remove the
assembly from the unit.