rating plate. Also, check to be sure that service provided by utility
is sufficient to handle load imposed by this equipment. Refer to
rating plate or Table 7 for equipment electrical specifications.
Make all electrical connections in accordance with National
Electrical Code (NEC) ANSI/NFPA 70-2001 and any local codes
or ordinances that might apply. For Canadian installations, all
electrical connections must be made in accordance with Canadian
Electrical Code CSA C22.1 or subauthorities having jurisdiction.
WARNING:
FIRE HAZARD
Failure to follow this warning could result in serious
injury, death, or property damage.
Do not connect aluminum wire between disconnect
switch and furnace. Use only copper wire.
The control system depends on correct polarity of power supply.
Connect HOT wire (H) and NEUTRAL wire (N) as shown in Fig.
3.
A separate line voltage supply MUST be used with a fused
disconnect switch or circuit breaker between main power panel
and unit. (See Fig. 3.)
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.
14 AWG copper wire.
24-V WIRING
Instructions for wiring thermostat (field supplied) are packed in
thermostat box. Make thermostat connections as shown in Fig. 3 at
24-v terminal board on fan timer board. See Fig. 4-7 for thermostat
wiring.
ACCESSORIES
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.
I.
Filters
WARNING:
FIRE, CARBON MONOXIDE AND
POISONING HAZARD
Failure to follow this warning could result in fire,
personal injury, or death.
Never operate unit without a filter or with filter access
door removed.
An internal filter rack is provided as standard equipment with
furnace and is located in blower compartment. A sufficient
clearance should be provided for air filter access. Refer to Table 8
for filter rack flange dimensions for return air duct.
START-UP, ADJUSTMENT, AND SAFETY CHECKOUT
I.
OPERATIONAL CHECKOUT
Installation of furnace is now complete. Run through the following
checkout and ensure each item has been performed.
1. Correct nozzle size has been selected for desired input rate.
2. Blower wheel support is removed.
3. Electrical wiring is completed according to Fig. 3.
4. Blower access door is secured in place.
5. Valve on oil supply line is open.
6. RESET BUTTON on primary control is pushed down.
7. Flame observation door is closed.
8. Thermostat is set for heating mode and set above room
temperature.
If all of the above items have been performed, set main electrical
switch to ON position and burner should start. When burner starts,
proceed to Combustion Check section.
II.
COMBUSTION CHECK
In order to obtain optimum performance from oil burner, the
following setup procedures must be followed:
1. A test kit to measure smoke, stack draft, over-fire draft, oil
pump pressure, CO
2
, and stack temperatures 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 readings that must
be taken are smoke number, over-fire draft, stack draft, and
pump pressure.
2. The proper smoke number has been established by engi-
neering tests to be between 0 and 1. This degree of smoke
emission is commonly referred to as a “trace” of smoke. It
is recommended to use a Bacharach true spot smoke test set
or equivalent.
3. In order to ensure proper draft through furnace, a baromet-
ric draft regulator (supplied with furnace) must be installed.
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 5 minutes, and set
between -0.025 and -0.035 in. wc. (See Table 9.)
4. The over-fire draft, which is taken through observation door
(located in center line above burner in front panel of
furnace), is a measurement necessary to determine if there
is a blockage between oil burner and flue outlet.
There should be a total pressure drop of between 0.020 and
0.05 in. wc through furnace as shown in Table 9. The
over-fire draft must be set within the range shown in Table
9.A reading outside the range shown in Table 9 (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 any of the following problems:
a. Excessive combustion air due to air shutter being too
wide open.
TABLE 8—FILTER SIZE (IN.) AND QUANTITY
UNIT
SIZE
AIR FILTER
SIZE
RETURN OPENING
SIZE
SUPPLY OPENING
SIZE
036105
(2) 12 X 20
20 X 20
20 X 20
060120
(2) 16 X 20
22 X 20
24 X 20
TABLE 9—FURNACE DRAFT CONDITIONS (IN. WC)
FURNACE
INPUT
(BTUH)
FLUE
DRAFT
MINIMUM
OVER-FIRE
DRAFT
MAXIMUM
TOTAL RESTRICTION
THROUGH
HEAT EXCHANGER
70,000
-0.025
0.010
0.020 to 0.035
91,000
-0.025
0.020
0.030 to 0.045
105,000
-0.025
0.025
0.035 to 0.050
119,000
-0.025
0.025
0.035 to 0.050
140,000
-0.025
0.025
0.035 to 0.050
154,000
-0.025
0.025
0.035 to 0.050
—7—
