W415-1243 / E / 11.27.17
48
IOM
IOM
18.2 CALCULATING AIR FLOW
18.3 ADJUSTING BLOWER SPEEDS ON ECM EON BLOWER MOTORS
5A FUSE
24 VAC MOLEX
ICM
INTERFACE
THERMOSTAT
TERMINALS
FAULT CODE
BUTTON
RED STATUS
LED
HEAT STAGING
JUMPER P5
120 VAC NEUTRAL
CONNECTIONS
120 VAC
MOLEX
POWER
HUMIDIFIER
ELECTRONIC
AIR CLEANER
PARK
TERMINALS
FIGURE 36 - INTEGRATED FURNACE IGNITION CONTROL
FIGURE 39
TABLE 8 - HEATING SPEEDS ECM EON
ALL MODELS ECM
ESP 0.1” to 1.0” w.c.
HEAT
Jumper
ADJUST
Jumper
Low-Fire
▲
T
Range 25-55°F
(14-31°C)
High-Fire
▲
T
Range 35-65°F
(20-36°C)
A
NORM
35°F (20°C)
50°F (28°C)
B
NORM
40°F (22°C)
45°F (25°C)
C
NORM
45°F (25°C)
55°F (31°C)
D
NORM
50°F (28°C)
60°F (33°C)
Note: Moving the ADJUST jumper from the NORM posi-
tion to the (+) or (-) position will increase or lower the
temperature rise by 15%
H12.7.1B
H22.2.2B
CFM =
Output
1.085 x
∆
T
where:
• CFM is air
fl
ow in cubic feet per minute;
•
∆
T is the temperature rise; and
• O
utput is the furnace output capacity
from the rating plate
.
There are circumstances where it may be desirable to know the air
fl
ow delivery through the duct system,
such as when estimating the amount of air
fl
ow available for
air conditioning. This can be done by direct measurement with
electronic or sloped manometers and velometers, or by counting
the number of times the Amber CFM LED on the control board
fl
ashes when equipped with ECM EON motor. Each
fl
ash
signi
fi
es 100 CFM; count the
fl
ashes and multiply by 100 to
determine the actual CFM delivered (for example: 10
fl
ashes x
100 = 1000 CFM), or use the formula in the next column.
H22.6.2B
NOTE:
Temperature rise should
always be re-checked
whenever blower speed
is changed.
This unit is factory set to run at the middle of the heating temperature rise range
as listed on the rating plate. The cooling speed is set to the maximum air
fl
ow
designated in the model number.
Three sets of 4 position movable jumpers are provided for Heat, Cool, and Adjust
taps for a variable speed motor. These tap jumpers apply signals to the ECM
motor without other interaction with the control board.
If the blower speeds require adjustment, follow these steps:
1. Remove the blower compartment door.
2. Locate the 4 position movable HEAT jumper to adjust heat speed.
3. Remove the jumper from position A and place it on the
corresponding letter B, C, or D as required. Refer to TABLE 8 -
HEATING SPEEDS.
4. To adjust the cooling air
fl
ow ECM EON, remove the COOL
jumper from position A, and place it on the corresponding letter
B, C, or D. Refer to Table 7A and 7B.
Moving the ADJUST jumper from the NORM to the (+) or (-) position
will cause the air
fl
ow to be increased or lowered by 15%.
The TEST position on the ADJUST tap is not used.
H3.77
DISCONNECT THE ELECTRICAL SUPPLY TO THE FURNACE BEFORE ATTEMPTING TO
CHANGE THE BLOWER SPEED. FAILURE TO DO SO COULD RESULT IN ELECTRICAL
SHOCK RESULTING IN PERSONAL INJURY OR LOSS OF LIFE.
WARNING
!
!
Содержание ULTIMATE 9700 Series
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