14
Table 8: Airflow data, models with 3/4 HP variable speed motors (ECM)
SW1- HEAT
DIP switch position
HEAT INPUT
(USGPH)
CFM with SW3-ADJ
DIP switch position A
CFM with SW3-ADJ
DIP switch position B
CFM with SW3-ADJ
DIP s witch position C
A
(1=OFF, 2=OFF)
0,68
1160
1275
1045
B
(1=ON, 2=OFF)
0,80
1340
1475
1205
C
(1=OFF, 2=ON)*
0,68
1000
1100
900
D
(1=ON, 2=ON)*
0,80
1160
1275
1045
SW2- COOL
DIP switch position
A/C size
(TON)
CFM with SW3-ADJ
DIP switch position A
CFM with SW3-ADJ
DIP switch position B
CFM with SW3-ADJ
DIP s witch position C
A
(1=OFF, 2=OFF)
4,0
1200
1380
1020
B
(1=ON, 2=OFF)
3,5
1050
1210
875
C
(1=OFF, 2=ON)
3,0
900
1035
765
D
(1=ON, 2=ON)
2,5
750
865
640
SW2- COOL
DIP switch position
A/C size
(TON)
CFM with SW3-ADJ
DIP switch position A
CFM with SW3-ADJ
DIP switch position B
CFM with SW3-ADJ
DIP s witch position C
A
(1=OFF, 2=OFF)
4,0
1600
1750
1440
B
(1=ON, 2=OFF)
3,5
1400
1540
1260
C
(1=OFF, 2=ON)
3,0
1200
1320
1080
D
(1=ON, 2=ON)
2,5
1000
1100
900
SW4- DEALY
DIP switch position
HEAT INPUT
(USGPH)
PreRun On-Delay
CFM Level - Time
ShortRun On-Delay
CFM Level - Time
Off-Delay
CFM Level - Time
A
(1=OFF, 2=OFF)
0,68
13% - 45 sec.
19% - 60 sec
38% - 3 min.
B
(1=ON, 2=OFF)
0,80
13% - 45 sec.
19% - 30 sec
38% - 3 min.
C
(1=OFF, 2=ON)
All
13% - 45 sec.
100% - 0 sec
100% - 2 min.
D
(1=ON, 2=ON)
All
13% - 90 sec.
100% - 0 sec
100% - 2 min.
No adjustment
required
A/C size
PreRun On-Delay
CFM Level - Time
ShortRun On-Delay
CFM Level - Time
Off-Delay
CFM Level - Time
-
All
NO DELAY
NO DELAY
100% - 90 sec
* Alternate adjust ment in oil-f ired heating mode f or higher temperature rise
DELAY PROFILE FOR COOLING OR HEAT PUMP HEATING MODE
DELAY PROFILE FOR OIL HEATING MODE
air distribution system.
PreRun and ShortRun are the periods of time when the the blower starts at very low CFM to minimize the
distributon of cool air in the system and then runs up to normal speed.
Off Delay is the time required to c ool down the heat exchanger with low CFMs, to minimize cool draft in the
OIL HEATING MODE
24 VAC input (R) on W only
CONTINUOUS FAN
24 VAC input (R) on G only
COOLING OR HEAT PUMP HEATING MODE
24 VAC input (R) to G, Y/Y2 and O (for cooling)
In Cooling - Dehumidification mode, with no 24 VAC input to DH, the CFMs are reduced by 15%.
The CFMs shown are reduced by 20% if there is 24 VAC input to Y1 (first stage cooling mode)
Summary of Contents for OBL112
Page 16: ...16 Figure 6 Furnace dimensions ...
Page 17: ...17 Figure 7 Wiring diagram 4 speed motor PSC ...
Page 18: ...18 Figure 8 Wiring diagram variable speed motor ECM ...
Page 19: ...19 Figure 9 Parts list with 4 speed motor PSC B50093B ...
Page 21: ...21 Figure 10 Parts list with variable speed motor ECM B50094B ...
Page 40: ...Figure 6 Dimensions de la fournaise 18 ...
Page 41: ...19 Figure 7 Diagramme électrique moteur 4 vitesses PSC ...
Page 42: ...20 Figure 8 Diagramme électrique moteur vitesse variable ECM ...
Page 43: ...Figure 9 Liste de pièces avec moteur 4 vitesses PSC 21 B50093B ...
Page 45: ...23 Figure 9 Liste de pièces avec moteur vitesse variable ECM B50094B ...