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507735-03
Page 44 of 53
Issue 1933
GDD95C110C5M Performance (Less Filter)
External
Static
Pressure
in. w.c.
Air Volume / Watts at Different Blower Speeds
Bottom Return Air, Side Return Air with Optional Return Air Base, Return Air from Both Sides or Return Air from
Bottom and One Side.
High
Medium-High
Medium
Medium-Low
Low
cfm
watts
cfm
watts
cfm
watts
cfm
watts
cfm
watts
0.00
2285
640
1990
435
1805
330
1685
265
1480
195
0.10
2250
660
1965
450
1775
345
1630
280
1430
205
0.20
2185
675
1910
465
1720
360
1575
295
1360
215
0.30
2150
690
1850
485
1670
375
1525
310
1290
235
0.40
2085
710
1810
495
1605
395
1465
325
1255
245
0.50
2060
725
1765
515
1565
400
1420
335
1190
255
0.60
2005
745
1700
535
1510
420
1370
355
1160
270
0.70
1970
760
1665
550
1460
440
1325
370
1100
280
0.80
1910
775
1620
560
1420
450
1275
380
1045
295
NOTE
: All air data is measured external to unit without filter (not furnished - field provided)
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.
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
Allowable Heating Speeds
Model
Red
Yellow
Blue
Brown
Black
045-3
Not Allowed
Allowed
Factory Setting
Not Allowed
Not Allowed
070-4
Not Allowed
Allowed
Allowed
Factory Setting
Not Allowed
090-4
Allowed
Allowed
Allowed
Factory Setting
Not Allowed
110-5
Not Allowed
Allowed
Allowed
Factory Setting
Not Allowed
Table 16.
Allowable Circulation Speeds
Model
Red
Yellow
Blue
Brown
Black
All Models
Factory Setting
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Table 17.
Service
At the beginning of each heating season, system should
be checked as follows by a qualified service technician:
Summary of Contents for Century GDD95C Series
Page 30: ...507735 03 Page 30 of 53 Issue 1933 Figure 50 Trap Drain Assembly Using 1 2 PVC or 3 4 PVC ...
Page 36: ...507735 03 Page 36 of 53 Issue 1933 045B3 070B4 090C4 110C5 Figure 57 Typical Wiring Diagram ...
Page 48: ...507735 03 Page 48 of 53 Issue 1933 Troubleshooting Heating Sequence of Operation ...
Page 49: ...507735 03 Page 49 of 53 Issue 1933 Troubleshooting Heating Sequence of Operation continued ...
Page 50: ...507735 03 Page 50 of 53 Issue 1933 Troubleshooting Cooling Sequence of Operation ...
Page 51: ...507735 03 Page 51 of 53 Issue 1933 Troubleshooting Continuous Fan Sequence of Operation ...