Figure 9; Operation; Supply Air Adjustments; Operational Checklist - CAC / BDP CBMAAA Installation Instructions Manual

3.0 OPERATION
3.1 SUPPLY AIR ADJUSTMENTS
This unit is equipped with 4-speed blower motors. The
supply air must be adjusted based on heating/air
conditioning output and the static pressure of the duct
system. For the desired air flow please refer to Table 3 and
4 as well as the air flow Table 6 based on static pressure in
the Technical Specifications, Table 5, of this manual.
Table 3 : Blower speed adjustments, 4 speed motor,
FURNACE
MODEL
CBM SIZE 105
CBM SIZE 120
heating mode
HEATING
INPUT
0.50 USGPH
0.65 USGPH
0.75 USGPH
0.85 USGPH
1.00 USGPH
1.10 USGPH
RECOMMENDED
BLOWER SPEED
MED-LOW
MED-HIGH
HIGH
MED-LOW
MED-HIGH
HIGH
To effect the adjustment, the RED and BLUE wires can be
changed on the motor. Also, please refer to the position of
the wires on the electronic board of the unit and consult the
wiring diagrams. If the heating and the air conditioning
speeds are the same, the RED wire must be moved to
"UNUSED LEADS" on the electronic board and the jumper
provided with the BLUE wire must be used between the
"HEAT" and "COOL" terminals.
Table 4 : Blower speed adjustments, 4 speed motor,
FURNACE
MODEL
CBM SIZE 105
CBM SIZE 120
cooling mode
COOLING
CAPACITY
2.0 TONS
2.5 TONS
3.0 TONS
3.5 TONS
4.0 TONS
5.0 TONS
RECOMMENDED
BLOWER SPEED
MED-LOW
MED-HIGH
HIGH
MED-LOW
MED-HIGH
HIGH
The blower start/stop delays can be adjusted by positioning
the DIP switches on the electronic board as shown on the
Figure 9.
Fi.qure 9 : Blower Start/Stop delays Board # 1158
oi 2i;4
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i
i20 Sec ; 6 'vin
DELAY ON DELAY OFF
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i
9,{ Sec J 4 I',,'lin
DELAY ON I C'EL£Y 'OFF
i
0
N
l
60 Sec
{DELAY ON
2J.34
3E t
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2 v it'
DELAY OFF
s, 12:_4
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........ _ I v ir
DEL_,Y ON i {},ELAY OFF
3,2 OPERATIONAL CHECKLIST
Before starting up the unit, be sure to check that the
following items are in compliance:
1. The electrical installation, the oil supply system, the
venting system, combustion air supply and ventilation;
2. The blower access door is in place and the blower rail
locking screws are well tightened;
3. The Blocked Vent Shut-Off (BVSO) is installed
according to instructions (for chimney venting);
4. The oil supply valve is open;
5. The flame observation door and the two clean-out
access doors (located at the front of the unit) or well
closed;
6. The burner "Reset" button is well pushed in or re-
armed;
7. The preliminary air adjustments on the burner comply
with the technical specifications in this manual;
8. The blower speed adjustments for heating and air
conditioning are appropriate and according to the
specifications in this manual;
9. The blower start/stop delays are satisfactory;
10. The thermostat of the room is in the heating mode and
is set higher than the ambient temperature.
To start the unit, turn the main electrical switch on.
Do not tamper with the unit or its controls. Call a
qualified service technician.
3.3
1.
2.
PURGING THE OIL LINE
A 10-micron (or less) oil filter should be installed as
closely to the burner as possible with all oil burners, but
it is essential for burners with a low firing rate. We
recommend the use of a low pressure drop oil filter with
a capacity greater than that of the fuel pump;
On a new installation, the air trapped in the oil line
leading from the tank to the nozzle must be thoroughly
purged in order to prevent excessive after drip. The oil
pump is equipped with a special fitting that facilitates
the purging of any air between it and the tank. The
proper procedure for performing this operation is as
follows:
a. Place a piece of 1/4" diameter clear plastic tubing
over the purge fitting on the oil pump;
b. Start the oil burner, then open the purge fitting and
allow the burner to run until the purge tube is
completely free of air bubbles;
c. At this point tighten the purge fitting, which will
allow the oil to run to the nozzle and fire the burner.
If the purging takes longer than 15 seconds and no
flame has been established the burner will stop.
Push the reset button on top of the Primary Control
to restart the burner.
For detailed information on the operation of the Primary
Control please refer to the instructions included with the
furnace or the burner.
11