Service - COMFORT-AIRE Century GDD95C Installation Instructions Manual

GDD95C110C5M Performance (Less Filter)
External
Bottom Return Air, Side Return Air with Optional Return Air Base, Return Air from Both Sides or Return Air from
Static
Bottom and One Side.
Pressure
High
in. w.c.
cfm
0.00 2285
0.10 2250
0.20 2185
0.30 2150
0.40 2085
0.50 2060
0.60 2005
0.70 1970
0.80 1910
NOTE: All air data is measured external to unit without filter (not furnished - field provided)
Model
045-3
070-4
090-4
110-5
Model
All Models Factory Setting
Exhaust and Air Intake Pipe
1. Check exhaust and air intake connections for tightness
and to make sure there is no blockage.
2. Is pressure switch closed? Obstructed exhaust pipe
will cause unit to shut off at pressure switch. Check
termination for blockages.
3. Obstructed pipe or termination may cause rollout
switches to open. Reset manual flame rollout switches
on burner box assembly if necessary.

Service

At the beginning of each heating season, system should
be checked as follows by a qualified service technician:
Page 44 of 53
Air Volume / Watts at Different Blower Speeds
Medium-High
watts cfm watts
640 1990 435
660 1965 450
675 1910 465
690 1850 485
710 1810 495
725 1765 515
745 1700 535
760 1665 550
775 1620 560
Allowable Heating Speeds
Red Yellow
Not Allowed Allowed
Not Allowed Allowed
Allowed Allowed
Not Allowed Allowed
Allowable Circulation Speeds
Red Yellow
Not Allowed
Medium
cfm watts
1805 330
1775 345
1720 360
1670 375
1605 395
1565 400
1510 420
1460 440
1420 450
Blue
Factory Setting
Allowed
Allowed
Allowed
Table 16.
Blue
Not Allowed
Table 17.
ELECTRICAL SHOCK, FIRE, OR EXPLOSION
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.
Issue 1933
Medium-Low
cfm watts cfm
1685 265 1480
1630 280 1430
1575 295 1360
1525 310 1290
1465 325 1255
1420 335 1190
1370 355 1160
1325 370 1100
1275 380 1045
Brown
Not Allowed
Factory Setting
Factory Setting
Factory Setting
Brown
Not Allowed
WARNING
HAZARD.
Low
watts
195
205
215
235
245
255
270
280
295
Black
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Black
Not Allowed
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