PROCEDURE 7—COOLING
The blower speed may be field adjusted to deliver required airflow for cooling application (see Table 5).
PROCEDURE 8—CONSTANT BLOWER SWITCH
This furnace is equipped with a constant low-speed blower option. Whenever room thermostat is not calling for heating or cooling, blower runs
on low speed in order to provide air circulation. If constant blower option is not desired, the rocker switch on side of control box may be used
to turn off constant speed.
CARE AND MAINTENANCE
WARNING: The ability to properly perform maintenance on this equipment requires certain expertise, mechanical
skills, tools, and equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment other
than those procedures recommended in the User’s Manual. FAILURE TO FOLLOW THIS WARNING COULD RESULT IN
POSSIBLE DAMAGE TO THIS EQUIPMENT, SERIOUS PERSONAL INJURY, OR DEATH.
WARNING: Before performing any service functions, unless operations specifically require power to be on, make sure
all utilities are turned off upstream of appliance. Failure to comply with this warning will cause a fire hazard and/or bodily
harm.
WARNING: To avoid personal injury, make sure the electrical supply power is off before servicing.
PROCEDURE 1—GENERAL
In order to keep furnace in good operating condition and to maintain it’s warranty, furnace MUST be serviced on an annual basis. This servicing
includes a nozzle change, burner inspection, visual check of tube passages through flue outlet and cleanout ports, and a visual inspection of
combustion chamber when burner is removed.
Depending on above inspection, service could also include cleaning and vacuuming of heat exchanger tubes and possibly heat exchanger drum
section.
Removal of any heat exchanger components which are sealed by gaskets requires replacement of gasket.
WARNING: Failure to replace any heat exchanger gaskets with new gaskets when any heat exchanger plates or covers
are removed could lead to heat exchanger leakage, sooting, and/or a hazardous condition capable of causing bodily harm.
This furnace should never be operated without air filter(s). 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.
PROCEDURE 2—OIL BURNER
Contact your service technician for service.
Lubricate burner motor with SAE 10 oil. Once each year, pour 2 teaspoons of oil slowly into each oil cup.
To maintain proper performance, oil nozzle MUST be replace once a year.
Fig. 1–Fan Off Time DIP Switch Settings (Black Box Represents Switch Position)
A95115
1
2
60 Sec
1
2
90 Sec
DELAY OFF DIP SWITCH SETTINGS
1
2
1
2
1
2
120 Sec
1
2
150 Sec
Table 5–Airflow Data (CFM)
UNIT SIZE
BLOWER SPEED
EXTERNAL STATIC PRESSURE IN. WC
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
036105
High
1795
1735
1675
1605
1550
1485
1425
1350
1275
1220
Medium
1365
1335
1305
1275
1255
1215
1155
1105
1050
985
Low
995
965
945
925
900
870
825
775
725
670
048125
High
1905
1845
1770
1695
1630
1565
1490
1425
1325
1220
Medium
1750
1675
1620
1560
1500
1440
1370
1305
1235
1130
Low
1390
1350
1305
1260
1220
1180
1120
1060
985
880
060155
High
2025
1960
1905
1850
1800
1665
1575
1500
1415
1315
Medium
1885
1825
1760
1705
1640
1565
1500
1430
1350
1265
Low
1555
1490
1445
1410
1350
1280
1230
1155
1085
1005
1. Airflow values in cubic ft. per minute (CFM) rounded to nearest 5 CFM.
2. Data taken without filters in place.
—8—
