A properly sized oil filter should be used with all oil burners and
should be installed as close to burner as possible. For a 2-pipe
system, a minimum capacity of 25 gph is needed.
BAROMETRIC DRAFT CONTROL
The barometric draft control shipped with furnace MUST be used
with furnace to ensure proper operation. Instructions for installing
control are packed with control. Refer to Fig. 6 for suggested
locations.
ELECTRICAL
The appliance must be installed in accordance with current
ANSI/NFPA 70 National Electrical Code, CSA C22.1 Canadian
Electrical Code Part 1, and/or local codes.
The control system depends on correct polarity of power supply.
Connect HOT wire (H) and NEUTRAL wire (N) as shown in Fig.
7.
A separate line voltage supply MUST be used with a fused
disconnect switch or HARC-type circuit breaker between main
power panel and unit. (See Fig. 7.) Disconnecting means must be
within sight from furnace.
The unit cabinet must have an uninterrupted or unbroken
electrical ground to minimize personal injury if an electrical
fault should occur. A green ground screw is provided in
control box for this connection.
Use only copper wire for 115-v supply service to unit.
Metallic conduit (where required/used) may terminate at side panel
of unit. It is not necessary to extend conduit inside unit from side
panel to control box.
When replacing any original furnace wiring, use only 105°C No.
16 AWG copper wire.
Instructions for wiring thermostat (field supplied) are packed in
thermostat box. Make thermostat connections as shown in Fig. 7 at
24-v terminal board on control box.
When installing optional accessories to this appliance, follow
manufacturer’s Installation Instructions included with accessory.
Other than wiring for thermostat, wire with a minimum of type "T"
insulation (63°F rise) must be used for accessories.
Two 1/4-in. quick-connect terminals marked EAC and N5 are
provided for electronic air cleaner (EAC) connection. (See Fig. 7.)
These terminals are energized with 115v (0.5-amp maximum)
during blower motor operation.
Two 1/4-in. quick-connect terminals marked HUM and N6 are
provided for 115-v humidifier connection. (See Fig. 7.) These
terminals are energized with 115v (0.5-amp maximum) during any
call for heat.
FILTERS
Never operate unit without a filter or with filter access door
removed. Failure to adhere to this warning could lead to a
hazardous condition which could lead to equipment damage
and bodily harm.
An internal filter is provided as standard equipment with furnace.
Refer to Keeping Filters Clean section for filter cleaning informa-
tion.
OPERATIONAL CHECKOUT
DO NOT START BURNER UNLESS BLOWER ACCESS
DOOR IS SECURED IN PLACE.
Installation of furnace is now complete and operational checkout
may be performed.
Step 1—Start-Up
1. Check wiring against wiring diagram shown in Fig. 7.
2. Open valve on oil supply line.
3. Reset primary control.
4. Set thermostat above room temperature.
5. Set main electrical switch to ON position. Burner should start.
DO NOT TAMPER WITH UNIT OR CONTROLS—CALL
YOUR SERVICE TECHNICIAN.
Step 2—Recommended Installation Practices and
Combustion Check
In order to obtain optimum performance from oil burner, the
following setup procedures must be followed:
1. A test kit (Bacharach No. 5022 kit or equivalent) to measure
smoke, stack draft, over-fire draft, CO
2
, and stack tempera-
tures MUST be used in order to obtain proper air band setting.
Although all of the above measurements are required for
optimum setup and efficiency data, the most important read-
ings that must be taken are smoke number, over-fire draft, and
stack draft.
2. The proper smoke number has been established by engineer-
ing tests to be between 0 and 1. This degree of smoke emission
is commonly referred to as a "Trace" of smoke. It is recom-
mended to use a Bacharach true spot smoke test set or
equivalent.
3. In order to ensure proper draft through furnace, a barometric
draft regulator (supplied with furnace) must be installed as
close to outlet of furnace as possible.
In order for this device to function properly, barometric
damper must be mounted with hinge pins horizontal and face
of damper vertical. (See instructions included with damper.)
The draft regulator should be adjusted after furnace has been
firing for at least 10 minutes, and stack draft should be
measured and set between -0.025 and -0.035 in. wc. The draft
should be checked with a Bacharach MZF draft gage or
equivalent.
4. The over-fire draft, which is taken through hole provided in
observation door, is a measurement necessary to determine if
there is a blockage between oil burner and flue outlet.
There should be a pressure drop of between 0.005 and 0.015
in. wc through furnace. This would set the range of the
over-fire draft between -0.01 and -0.03 in. wc. A reading
above -0.01 in. wc (for e0.1 in. wc) would indicate
that furnace is in an extremely high-pressure condition in
primary section. This condition may be caused by excessive
combustion air due to air band being too wide open or a lack
of flue draft (chimney effect) or some other blockage, such as
soot, in secondary section of heat exchanger.
5. The CO
2
and stack temperature instruments enable you to
obtain data required to determine thermal efficiency of fur-
nace.
6. An oil filter should be installed as close to burner as possible
with ALL oil burners and is essential on lower firing rate
burners. We recommend the use of a low pressure drop oil
filter such as the General Filter, Inc. model #1A-25A or
equivalent. It is critical that oil capacity be equivalent or
greater than fuel pump gear capacity. For a 2-pipe system, this
is 25 gph.
7. The oil pressure regulator is factory set to give nozzle oil
pressures of 100 psig. The firing rate noted on nameplate may
be obtained with "standard" nozzles by adjusting pump
pressure as noted in Table 4 or on label on furnace.
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