Air Adjustment; Pump Adjustment - andrews OFS25 Installation Manual, Operation And Service Manual

Oil fired storage water heaters
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COMMISSIONING
1. Air register opening adjustment
-Reference index in position "0" register closed
-Reference index in position "9" register open
2. Flame disc position
3. Air register opening adjuster reference index
4. Air damper in open position (9)
5. Air damper in closed position (0)
6. Air Damper Fixing Screw
When the combustion adjustment is
complete the following combustion analysis
readings will be achieved.
Andrews Model No
Smoke
No
Flue Gas Temp
ºC
CO
%
2
O
%
2
PRESSURE
GAUGE
PRESSURE
ADJUSTMENT
The pump pressure must be adjusted and set correctly to suit the fuel type being used
See table below
Andrews Model No
Nozzle fitted
Kero
Pressure
PSI
Pressure
Bar
Nozzle
Gas
Supplied
Oil
Pressure
PSI
Pressure
Bar
OFS25
OFS29
OFS63
0
0
380
380
260
11.5
11.5
11.5
5.5
5.5
5.5
OFS25
OFS29
OFS63
0.75x80s
0.85x80s
1.65x80s
113
110
127
7.8
7.6
8.6
0.55x80s
0.60x80s
1.25x80s
195
211
206
13.5
14.5
14.2
OFS90
OFS108
0
0
0
260
260
11.5
11.5
5.5
5.5
PUMP
OFS90
OFS108
2.50x80s
3.00x80s
113
113
7.8
7.8
1.75x80s
2.25x80s
214
187
14.8
12.9
SECTION 4
1
6
3
AIR
2
ADJUSTMENT
OFS163
0
260
11.5
5.5
PUMP
ADJUSTMENT
OFS163
4.50x80s
113
7.8
3.50x80s
174
12
4
5
21

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Ofs29Ofs90Ofs63Ofs108Ofs163

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