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Effects of pressure on nozzle flow rate – Thermo Pride Oil Furnace (general service and maintenance) User Manual

Page 18

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All installations and services must be performed by qualified service personnel.

16

GO TO PROPER COMBUSTION

ACHIEVED SECTION ABOVE

AND SET COMBUSTION

ADJUST BLOWER SPEED

TO RAISE TEMPERATURE

RISE.

-- INCREASE LENGTH OF BURNER ON CYCLE
-- INSULATE CHIMENY WITH CHIMNEY LINER.

DOES FURNACE OPERATE

WITHOUT CONDENSING?

TROUBLE SHOOTING ENDS.

REPEAT PROCEDURE UNTIL TROUBLE FREE OPERATION IS OBTAINED.

Yes

Yes

Yes

Yes

No

No

No

No

Yes

0.59
0.77
0.89
1.00
1.07
1.18
1.30
1.41
1.48

0.55
0.71
0.82
0.93
0.99
1.10
1.21
1.31
1.37

0.45
0.58
0.67
0.76
0.81
0.89
0.99
1.07
1.12

.50
.65
.75
.85
.90

1.00
1.10
1.20
1.25

1.60
1.78
1.95
2.07
2.37
2.66
2.96
3.24
3.55

1.48
1.64
1.81
1.92
2.19
2.47
2.74
3.00
3.29

1.21
1.34
1.48
1.57
1.79
2.01
2.21
2.44
2.69

1.35
1.50
1.65
1.75
2.00
2.25
2.50
2.75
3.00

EFFECTS OF PRESSURE ON NOZZLE FLOW RATE

NOZZLE

RATING

AT

100 PSI

NOZZLE

RATING

AT

100 PSI

NOZZLE FLOW RATES IN

GALLONS PER HOUR (Approx.)

80PSI 120PSI 140PSI

NOZZLE FLOW RATES IN

GALLONS PER HOUR (Approx.)

80 PSI 120 PSI 140 PSI

IS STACK TEMPERATURE

ABOVE 350 DEGREES F?

HAS THE BURNER

COMBUSTION BEEN

SET AS INDICATED

IN ABOVE SECTION?

IS THE TEMPERATURE

DIFFERENCE BETWEEN

SUPPLY AND RETURN AIR

70 DEGREES F OR MORE?