CARBON MONOXIDE POISONING HAZARD
Failure to replace any heat exchanger gaskets with new
gaskets when any heat exchanger plates or covers are re-
moved could lead to heat exchanger leakage, sooting, and/or
a hazardous condition capable of causing personal injury or
death.
This furnace should never be operated without an air filter.
Disposable filters should be replaced at least once a year. If
equipped to provide cooling, filters should be replaced a minimum
of twice a year. Permanent filters should be cleaned at least twice
a year.
ALWAYS KEEP MAIN OIL VALVE TURNED OFF IF
BURNER IS SHUT DOWN FOR AN EXTENDED PERIOD OF
TIME.
Step 2—Oil Burner
For optimum performance, oil burner nozzle should be replaced
once a year. Contact your service technician if you are unsure of
this procedure.
The procedure for nozzle installation and/or replacement is out-
lined in oil burner instruction manual which came with furnace.
After replacement of nozzle, burner should be adjusted in accor-
dance with Combustion Check section of this instruction.
Table 14—58VMR120 Size Airflow Data (CFM)
OIL HEATING MODE
24 VAC INPUT (R) ON W ONLY
SW1-HEAT
Dip Switch Position
HEAT INPUT
(USGPH)
CFM with SW3-ADJ
Dip Switch A Position
CFM with SW3-ADJ
Dip Switch B Position
CFM with SW3-ADJ
Dip Switch C Position
A (1=OFF, 2=OFF) 0.85 1450 1640 1235
B (1=ON, 2=OFF) 1.00 1700 1920 1445
C (1=OFF, 2=ON) 1.10 1850 2090 1575
D (1=ON, 2=ON) Same Value then A Dip Switch Position
CONTINUOUS FAN
24 VAC INPUT (R) ON G ONLY
SW2-COOL
Dip Switch Position
A/C Size
(TON)
CFM with ADJ
Dip Switch A Position
CFM with ADJ
Dip Switch B Position
CFM with ADJ
Dip Switch C Position
A (1=OFF, 2=OFF) 5.0 1315 1510 1115
B (1=ON, 2=OFF) 4.0 1050 1210 895
C (1=OFF, 2=ON) 3.5 920 1055 780
D (1=ON, 2=ON) 3.0 790 905 670
COOLING OR HEAT PUMP HEATING MODE - SINGLE SPEED OR 2-SPEED HIGH
24 VAC INPUT (R) TO G, Y/Y2 AND O (FOR COOLING)
SW2-COOL
Dip Switch Position
A/C Size
(TON)
CFM with SW3-ADJ
Dip Switch A Position
CFM with SW3-ADJ
Dip Switch B Position
CFM with SW3-ADJ
Dip Switch C Position
A (1=OFF, 2=OFF) 5.0 1750 1925 1575
B (1=ON, 2=OFF) 4.0 1400 1540 1260
C (1=OFF, 2=ON) 3.5 1225 1350 1105
D (1=ON, 2=ON) 3.0 1050 1155 945
NOTE: In cooling-Dehumidification mode, with no 24 VAC input to DH, the CFM-STD is reduced by 15%
COOLING MODE OR HEAT PUMP HEATING MODE - 2-SPEED LOW
24 VAC INPUT (R) TO G, Y1 AND O (FOR COOLING)
SW2-COOL
Dip Switch Position
A/C Size
(TON)
CFM-STD with SW3-ADJ
Dip Switch A Position
CFM-HIGH with SW3-ADJ
Dip Switch B Position
CFM-LOW with SW3-ADJ
Dip Switch C Position
A (1=OFF, 2=OFF) 5.0 965 1060 865
B (1=ON, 2=OFF) 4.0 770 845 695
C (1=OFF, 2=ON) 3.5 675 740 605
D (1=ON, 2=ON) 3.0 580 635 520
NOTE: In Cooling-Dehumidification mode, with no 24 VAC input to DH, the CFM-STD is reduced by 15%
DELAY PROFILE FOR OIL HEATING MODE
SW4-DELAY
Dip Switch Position
HEAT INPUT
(USGPH)
On-Delay
CFM Level - Time
Short Run On-Delay
CFM Level - Time
Off-Delay
CFM Level - Time
A (1=OFF, 2=OFF) 0.85 0% - 45 sec 44% - 30 sec 38% - 3 min.
B (1=ON, 2=OFF) 1.00 0% - 30 sec 44% - 30 sec 38% - 3 min.
C (1=OFF, 2=ON) 1.10 0% - 30 sec 50% - 30 sec 38% - 3 min.
D (1=ON, 2=ON) All 0% - 30 sec 100% - 0 sec 100% - 2 min.
Short Run is the time before the blower start at normal speed, with very low CFM, to minimize cool draft in the air distribution system.
Off Delay is the time required to cool down the heat exchanger, with low CFM, to minimize cool draft in the air distribution system.
DELAY PROFILE FOR COOLING OR HEAT PUMP HEATING MODE
No Adjustment
Required
A/C Size
PreRun On-Delay
CFM Time
Short Run On-Delay
CFM Level - Time
Off-Delay
CFM Level - Time
- All 30 sec 75% - 2.5 min. 50% - 3 min.
Short Run is the time before the blower start at normal speed, with lower CFM, to minimize cool draft in the air distribution system.
Off Delay is the time required to cool down the coil (heating mode), with low CFM, to minimize cool draft in the air distribution system.
14
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