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.
7. The oil pressure regulator is factory set to give oil pressure of
135 psig for the model having 105,000 BTUH input and 130
psig for the model having 119,000 BTUH input. The firing
rate noted on nameplate may be obtained using the nozzles
and pump pressures indicated in Table 10. The proper oil
burner turbulator setting for all the firing rates is 0 (zero).
8. On a new installation, air entrapped in oil line leading from
tank to nozzle must be thoroughly purged in order to prevent
excessive after drip. The oil pump is provided with a special
fitting which allows purging of any air between tank and oil
pump. The proper procedure for performing this operation is
as follows:
a. Place a piece of clear plastic 1/4 in. diameter tubing over
purge fitting on oil pump.
b. Start oil burner, then open purge fitting and allow burner to
run until purge tube is completely free of air bubbles.
c. Tighten purge fitting. Allow oil to run to nozzle and fire
burner.
d. If purging takes longer than 15 sec and no flame has been
established, burner stops. Push reset button on front of
primary control to restart burner.
e. For detailed information on operation of primary control,
refer to instructions included with furnace.
After all the setup procedures mentioned above have been com-
pleted, the burner should be allowed to operate and an inspection
mirror should be used to observe the flame pattern at tip of nozzle.
Any irregularities such as burning to 1 side or pulsating flame
patterns should be corrected by changing nozzle.
Step 4—Fan Adjustment Check
This furnace is equipped with a variable speed motor. The blower
is factory set to deliver the required airflow for 0.75GAL/HR(US)
INPUT and 3.0 tons air conditioning for the 58VLR105 (See
Tables 11A, 11B, and 11C). The blower is factory set to deliver the
required airflow for 0.85GAL/HR (US) INPUT and 5 tons air
conditioning for the 58VLR120 (See Tables 12A, 12B, and 12C).
The blower is field adjustable to deliver the required airflow for
other capacities.
Table 10—Burner Input And Nozzle Size
FURNACE
INPUT
(BTUH)
FIRING
RATE
GAL/HR (US)*
RIELLO OIL BURNER
PUMP
PRESSURE
(PSIG)
No. 40 Series
Model
Delavan
Nozzle
70,000
0.50
F3
0.40 - 70A
160
91,000
0.65
F3
0.50 - 70W
170
105,000
0.75
F3
0.65 - 70W
135
119,000
0.85
F5
0.75 - 70B
130
140,000
1.00
F5
0.85 - 70W
140
154,000
1.10
F5
1.00 - 70W
125
* For rating puropses only.
Table 11a—58VLR105 Size Dip Switch Adjustment
for Oil Heating Mode
SW1-HEAT
DIP SWITCH
POSITION
INPUT
USGPH
SW4-DELAY
DIP SWITCH
POSITION
INPUT
USGPH
1
2
1
2
OFF
OFF
0.75
OFF
OFF
0.75
ON
OFF
0.65
ON
OFF
0.65
OFF
ON
0.5
OFF
ON
0.5
ON
ON
N/A
ON
ON
N/A
Table 11b—58VLR105 Size Dip Switch
Adjustments for Heat Pump and Cooling Mode
SW2-COOL
DIP SWITCH POSITION
A/C SIZE
(TONS)
1
2
OFF
OFF
3.0
ON
OFF
2.5
OFF
ON
2.0
ON
ON
1.5
Table 11c—58VLR105 Size Dip Switch CFM
Adjustments in All Modes
SW2-ADJUST
DIP SWITCH POSITION
HEATING CFM %
INCREASE OR
DECREASE
COOLING CFM %
INCREASE OR
DECREASE
1
2
OFF
OFF
0
0
ON
OFF
+ 13
+ 10
OFF
ON
- 15
- 10
ON
ON
N/A
0
Table 12a—58VLR120 Dip Switch Adjustment for
Oil Heating Mode
SW1-HEAT
DIP SWITCH
POSITION
INPUT
USGPH
SW4-DELAY
DIP SWITCH
POSITION
INPUT
USGPH
1
2
1
2
OFF
OFF
0.85
OFF
OFF
0.85
ON
OFF
1.00
ON
OFF
1.00
OFF
ON
1.10
OFF
ON
1.10
ON
ON
N/A
ON
ON
N/A
Table 12b—58VLR120 Size Dip Switch
Adjustments for Heat Pump and Cooling Mode
SW2-COOL
DIP SWITCH POSITION
A/C SIZE
(TONS)
1
2
OFF
OFF
5.0
ON
OFF
4.0
OFF
ON
3.5
ON
ON
3.0
12
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