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TABLE 22
FINAL NG MANIFOLD PRESSURE SETTINGS (inches w.c.)
Furnace Input rate
(KBTU/hr)
40%
60
0.7 + 0.2 / - 0.0
80
0.7 + 0.2 / - 0.0
100
0.7 + 0.2 / - 0.0
Downflow 120
0.7 + 0.2 / - 0.0
Upflow 120
0.9 + 0.2 / - 0.0
For upflow 120KBTU/hr model, 1st stage is 45%
Manifold pressures apply for Natural Gas applications ONLY
FINAL LP MANIFOLD PRESSURE SETTINGS (inches w.c.)
Furnace Input rate
(KBTU/hr)
40%
60
2.1 ± 0.5
80
2.1 ± 0.5
100
2.1 ± 0.5
Downflow 120
2.1 ± 0.5
Upflow 120
2.9 ± 0.5
For upflow 120KBTU/hr model, 1st stage is 45%
Manifold pressures apply for Propane applications ONLY
PERSONALITY MODULE
The Personality Module is a removable memory device,
on which is stored model specific data required for proper
furnace operation. The Personality Module is tethered to
the unit and must remain with the furnace at all times.
The Personality module must remain plugged into the
furnace IFC.
18-CD30D1-9
65%
100%
Not Adjustable
3.5 ± 0.2
Not Adjustable
3.5 ± 0.2
Not Adjustable
3.5 ± 0.2
Not Adjustable
3.5 ± 0.2
Not Adjustable
3.5 ± 0.2
65%
100%
Not Adjustable
10.0 ± 0.5
Not Adjustable
10.0 ± 0.5
Not Adjustable
10.0 ± 0.5
Not Adjustable
10.0 ± 0.5
Not Adjustable
10.0 ± 0.5
Installer's Guide
STAND ALONE OPERATION (CONTINGENCY MODE)
The Contingency Mode allows the installer to set the
equipment to operate in an ON/ OFF Duty Cycle
mode. This mode will be activated using the User
Interface. Contingency Mode is NOT available in
24VAC mode. The user will select the desired level of
capacity required, Stage 1 (40%) or 2 (100%). The
user will select the desired ON/ OFF Duty Cycle, 10%
minimum to 50% maximum, (10% increments, 10% =
2 minutes On, 18 minutes Off; 50% = 10 minutes on,
10 minutes off).
CONTINGENCY MODE
Note:
Stage 1 = 40% (low) heat, Stage 2 = 100% (high) heat
Note:
If a communicating comfort control is detected to be
present and the contingency mode is selected, NOT
AVAILABLE will be displayed on the User Interface.
•
Stand alone operation can only be entered at the
user interface.
•
Stand alone operation can be set up to operate the
furnace in Heating Only.
•
The contingency mode is used when the communi-
cating comfort Control is not communicating with
the furnace or when setting gas manifold pressures.
•
Before attempting to enter contingency mode,
disconnect the Data wire "D" from the Furnace IFC
terminal block.
•
The contingency mode will function only when
the Furnace IFC is not flashing a fault code at its
Fault LED.
•
To enter the contingency mode of operation, turn
115 VAC power off. When the Green LED on the
variable speed inducer drive goes out, turn 115
VAC power back on.
•
Scroll down using the down arrow 6 at the User
Interface until you see CNTNGNCY Mode, then
press the Enter button.
•
CNTNGNCY MODE and 3 STAGE 4 will now
be displayed. Press the Enter button.
•
STAGE and 3OFF [OFF] will now be displayed.
First or Second heat stage must be selected. Use
3 or4
the
arrows
of heat wanted and then push the Enter button
and then the 6 button.
•
DUTY CYCLE and 10% [10%] will now be displayed.
A duty cycle must now be selected from 10 to
50%. A 10% duty cycle will run the furnace for
2 minutes and then off for 18 minutes. A 50%
duty cycle will run the furnace for 10 minutes
and then be off for 10 minutes.
These duty cycles will be repeated 3 times per
hour. Use the 3or4 arrows to select a duty
cycle and then push the Enter button and then
the 6 button.
to
select
the
stage
49
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