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10 Fitting Instructions
Page 22
10. Fitting Instructions
CAUTION
This chapter is intended for approved fitters and
not
for users.
Pump pressure
The heater's pump pressure is set at the factory. However, it is good practice to check the pump
pressure from time to time - when the heater is serviced, for instance. Pump pressure should always be
checked if the heater develops a fault, or if the burner is not operating properly. Check the pump
pressure using a good pressure gauge with a range of 0 to 16 bar or 0 to 25 bar. The location of the
pump's pressure gauge port and pressure adjustment screw are shown in the diagram below.
1. Oil pump Danfoss RSA 060 ................ N51400010
2. Adjustment screw pump pressure
3. Oil valve Rapa ....................................... N51400237
4. Oil filter GA 70452 1/4" .......................... N51400128
Aluminium Filter jar ................................ N51400198
5. Return line 6mm .................................... N51400219
6. Supply line 6mm .................................... N51400218
7.
Serto ¼”x6mm coupling 90° ................... N52800051
8.
Serto ¼”x6 coupling ............................... N52800049
9.
Serto ¼” in x 6mm coupling ................... N51400216
10.
Hose connection ¼” x 6mm ................... N51400217
The correct pump pressures for the various models of heater are shown in the table below
Type
P 40
P 60
P 80
P 100
P 120
Kerosene
9 bar
9 bar
9 bar
8 bar
10 bar
Diesel
10 bar
9 bar
8 bar
8 bar
9 bar
Pressures of up to 1 bar above or below the correct pressure are acceptable. The pump pressure can
therefore often best be set on the basis of observed combustion performance. If the heater is giving off
an unpleasant smell and the burner flame is too small, try increasing the pressure. If the burner flame is
reddish and flames are coming out of the heater, try reducing the pressure. However, these problems
are not necessarily down to incorrect pump pressure alone; the nozzle may (also) require attention.
To be sure the combustion is optimal, better to measure the O2 percentage of the combustion.
Optimal O2 percentage measured in the combustion chamber: 4% <> 6%
Air chamber
The air chamber is the square housing welded on the burner chamber.
The burner head is attached on to the air chamber.
The air chamber has four air inlets that provide air (oxygen) that is needed for the
combustion process. The inlets are factory-adjusted and need no further attention,
although the openings should be cleaned in dusty environments.
Do not adjust the openings, altering the air supply will likely lead to ignition- or
burning problems.
