9.3 STEPPER GAS VALVE CONTROL . . . . . 30
9.4 CONNECTOR 15-PINS . . . . . . . . . . . . . 30
9.5 ECM MOTOR CONNECTION . . . . . . . . . 30
9.6 COMMUNICATIONS L.E.D. . . . . . . . . . . . 30
9.7 MEMORY CARD . . . . . . . . . . . . . . . . . . 31
9.8
REPLACING FURNACE CONTROL . . . 31
9.9 DIP SWITCH . . . . . . . . . . . . . . . . . . . . . 31
9.9.1 Heat adjust . . . . . . . . . . . . . . 31
9.9.2 Cooling airflow select . . . . . . . . 31
9.9.3 Heat rise adjust
9.9.4 Continuous fan speed . . . . . . . . 32
9.9.5 Furnace test mode
10 USER'S INFORMATION MANUAL
10.1 WHAT TO DO IF YOU SMELL GAS . . . . . 34
10.2 OPERATING YOUR FURNACE . . . . . . . . 34
10.3 LIGHTING INSTRUCTION . . . . . . . . . . . 34
11 UNIT
COMMISSIONING
CHECKLIST
12 PART LIST
List of figures
Figure 1:
Right side connection . . . . . . . .
Figure 2:
Left side connection . . . . . . . . .
Figure 3:
Downflow position . . . . . . . . . .
Figure 4:
Downflow position pressure switch
assembly . . . . . . . . . . . . . . .
Figure 5:
Connecting pressure switch in
downflow position . . . . . . . . . . 10
Figure 6:
Horizontal right position . . . . . . . 10
Figure 7:
Horizontal right slope . . . . . . . . 10
Figure 8:
Horizontal right pressure switch
connection . . . . . . . . . . . . . . 11
Figure 9:
Horizontal right pressure switch
tubing
Figure 10: Horizontal left position
Figure 11: Drain trap alternate position
Figure 12: Horizontal left pressure switch
connection . . . . . . . . . . . . . . 12
Figure 13: Wiring Diagram Modulating t-stat
Figure 14: Wiring Diagram Modulating t-stat
Figure 15: Wiring Diagram . . . . . . . . . . . 18
Figure 16: Suggested heating cable insertion
in vent termination
Figure 17: Combustion air moisture trap . . . . 22
Figure 18: Top panel combustion air . . . . . . 22
. . . . . . . . . . . 31
. . . . . . . . . 32
AND
STARTUP
. . . . . . . . . . . . . . . . 11
. . . . . . . 11
. . . . 12
. . . . . . . . . 20
Figure 19: side panel combustion air
Figure 20: Roof concentric termination
Figure 21: Sidewall concentric termination
Figure 22: Roof termination . . . . . . . . . . . 23
Figure 23: Straight termination with a Tee . . . 24
Figure 24: Straight termination . . . . . . . . . 24
Figure 25: Snorkel termination . . . . . . . . . 24
Figure 26: Sorkel termination with a Tee . . . . 24
Figure 27: Venting gasket . . . . . . . . . . . . 25
Figure 28: Direct vent clearance . . . . . . . . 26
Figure 29: Other than Direct vent clearance . . 27
Figure 30: Dehum connection with humidistat
Figure 31: Dehum
Figure 32: Dimensional Drawing . . . . . . . . 41
34
Figure 33: Exploded view 1 . . . . . . . . . . . 42
Figure 34: Exploded view 2 . . . . . . . . . . . 43
List of tables
Table 1:
Table 2:
38
Table 3:
42
Table 4:
Table 5:
Table 6:
8
Table 7:
8
9
Table 8:
Table 9:
9
Table 10:
Table 11:
Table 12:
Table 13:
Table 14:
Table 15:
Table 16:
Table 17:
Table 18:
Table 19:
. 16
Table 20:
. 17
Table 21:
Table 22:
Table 23:
Table 24:
Table 25:
2
connection
humidistat . . . . . . . . . . . . . . 33
Codes and Standards . . . . . . . .
Minimum clearance . . . . . . . . .
Suggested Return size . . . . . . . 13
Inlet Gas Pressure . . . . . . . . . . 15
Outlet gas pressure . . . . . . . . . 15
Maximum capacity of pipe Cu.ft./Hr
for pipe length ft (m) . . . . . . . . . 15
OPERATION
WITH
STAGE T-STAT . . . . . . . . . . . . 16
THERMOSTAT TYPE SELECTION
Dehumidification . . . . . . . . . . . 16
Electrical Data . . . . . . . . . . . . 17
Thermostat Choice VS System . . . 17
Approved Vent and Combustion air
pipe material USA installation . . . . 20
Maximum equivalent vent length
(ft) for modulating units and altitude
up to 4500 ft . . . . . . . . . . . . . 21
Deduction for fittings . . . . . . . . . 21
Air Flow Adjustement - S1 . . . . . . 31
Cooling Airflow Adjust . . . . . . . . 31
Heat Rise . . . . . . . . . . . . . . . 32
Continuous Fan Selection . . . . . . 32
Test mode
. . . . . . . . . . . . . . 32
Fault Code . . . . . . . . . . . . . . 36
Legacy Cooling airflow
Specifications
. . . . . . . . . . . . 39
Specifications for -MS . . . . . . . . 40
Part List CXX-M-V . . . . . . . . . . 44
Part List CXX-M-S . . . . . . . . . . 45
. . . . . 22
. . . . 23
. . 23
32
without
6
7
SINGLE
16
. . . . . . . 39