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Integrated Furnace Control CNT2854 –
Used on 80% and 90% Furnaces
Single Stage Heat – Silicon Nitride Hot Surface Ignitor
Single Speed Vent Motor and Standard Four Speed Blower
COOL-H
PARK
E17
HEAT-H
E16
E18
K2
OFF
ON
1
2
3
4
S1
DS1
50A65474
CNT2854
Electrical Rating:
Input: 25 VAC, 60 Hz.
XFMR Sec, Current: 450 MA
IGN Output: 120 VAC, 2.0 A
MV Output: 24 VAC, 1.5 A
Cir. Blower Output: 120 VAC, 14.5 FLA, 26.0 LRA
Trial for Ignition Period: 4 Seconds
Ignitor Activation Period: Not Declared
Prepurge: 0 Seconds
Postpurge: 5 Seconds
Retries: 2
Recycles: 10
Cir. Blower on Delay: Heat 45 Seconds
Cir. Blower on Delay: Cool 2 Seconds
PARK
LINE-H
E28
E27
E13
EAC-H
XFMR-H
E14
K1
DS1
Y
W
Superseded to CNT03076
HUM-H
LINE-IN
E20
1
K3
HUM-N
E8
2
EAC-N
U2
3
XEMR-N
4
Q9
CIR-N
E1
10
11
12
7
8
9
6
4
5
1
2
3
5 AMPS
E34
R
G
C
Cool "Off" Delay
SW1
On
Off
Heat "Off" Delay
SW2
On
On
Off
Off
* Factory Settings
8
E7
Plug # E20
1. IND-H
2. IGN-H
E9
3. IND-N
4. IGN-N
E10
E11
Plug # E1
PINS OUT
12 PIN CONNECTOR
1. HLO
High Limit Output
2. FP
Flame Probe
3. TH
24V Hot
4.
Not Used
5.
Not Used
6. TR
24V Return
7. HLI
High Limit Input
8. GND
Ground
9. MV COM
Main Valve Common
10. PS
Pressure Switch
11.
Not Used
12. MV
Main Valve
4 PIN CONNECTOR
1. IND
Inducer
2. IGN
Ignitor
3. IND-N
Inducer Neutral
4. IGN-N
Ignitor Neutral
Secs
0*
80
SW3
Secs
Off
60
On
100*
On
140
Off
180
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