PMP-098
Oil Furnaces
–
Furnace Manual
20
11/13
5
DIMENSIONS AND RATINGS (continued)
Table 12: Airflow Data, Models with
⅓
HP PSC Motors
0.1" (W.C.) 0.2" (W.C.) 0.3" (W.C.) 0.4" (W.C.) 0.5" (W.C.) 0.6" (W.C.) 0.7" (W.C.) 0.8" (W.C.) 0.9" (W.C.)
HIGH
1230
1185
1150
1095
1050
990
920
810
595
MED-HIGH
1090
1055
1005
970
925
875
810
700
550
MED-LOW
865
860
860
845
795
740
695
600
460
LOW
675
680
690
680
665
640
565
480
390
Speed
External Static Pressure ("W.C.)
Table 13: Airflow Data, Models with ½ HP ECM Motors
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 switch position C
A
(1=OFF, 2=OFF)
0.70
1260
1385
1135
B
(1=ON, 2=OFF)
0.60
1050
1155
945
C
(1=OFF, 2=ON)*
0.50
850
935
765
D
(1=ON, 2=ON)*
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 switch position C
A
(1=OFF, 2=OFF)
3.0
900
1035
765
B
(1=ON, 2=OFF)
2.5
750
860
635
C
(1=OFF, 2=ON)
2.0
600
690
510
D
(1=ON, 2=ON)
1.5
450
515
380
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 switch position C
A
(1=OFF, 2=OFF)
3.0
1200
1320
1080
B
(1=ON, 2=OFF)
2.5
1000
1100
900
C
(1=OFF, 2=ON)
2.0
800
880
720
D
(1=ON, 2=ON)
1.5
600
660
540
SW4- DELAY
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)
0.75
13% - 45 sec.
19% - 30 sec
38% - 3 min.
B
(1=ON, 2=OFF)
0.65
13% - 45 sec.
19% - 60 sec
38% - 3 min.
C
(1=OFF, 2=ON)
0.50
13% - 60 sec.
13% - 60 sec
38% - 3 min.
D
(1=ON, 2=ON)
All
13% - 30 sec.
100% - 30 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.
DELAY PROFILE FOR OIL HEATING MODE
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 of 2-stage cooling unit)
OIL HEATING MODE
24 VAC input (R) on W only
Same value as DIP switch position A
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)
* Alternate adjustement in oil-fired heating mode with higher temperature rise.
DELAY PROFILE FOR COOLING OR HEAT PUMP HEATING MODE
PreRun and ShortRun are the periods of time when the blower starts at very low CFM to minimize the
distribution of cool air in the system and then runs up to normal speed.
Off Delay is the time required to cool down the coil (heating mode) with low CFMs, to minimize cool draft
in the air distribution system.
PreRun and ShortRun are the periods of time when the blower starts at very low CFM to minimize the distribution of cool
air in the system and then runs up to normal speed.
Off Delay is the time required to cool down the heat exchanger with low CFMs, to minimize cool draft in the air
distribution system.
NOTE:
disconnect main power to unit prior to changing DIP switch settings.