Instructions for High Altitude Conversion
9
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Instructions for high altitude conversion for sealed combustion gas boiler GA124 • Issue
03/2005
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de
10.
Check manifold pressure. Set the manifold pressure
according to the values in Table 3. To adjust the
manifold pressure (Fig. 9,
Item. 5
), remove the
capscrew from the gas control. Turn the pressure
regulating adjusting screw clockwise to increase, or
counterclockwise to decrease the manifold
pressure. This adjustment must be made while the
boiler is in operation.
.
11.
After adjustment, record pressure in the start-up
procedure, and install the capscrew on the gas
control (Fig. 9,
Item. 5
).
12.
Observe the pilot flame (Fig. 10,
Item. 2
) through
viewing port (Fig. 8,
Item. 1
) in the burner cover
plate. The flame should envelop the flame sensor ½
- 1-½ inch, see (Fig. 10,
Item. 1
). If the pilot flame is
satisfactory then go to step 13. If the pilot flame is
too small or too large, adjust the pilot using pilot
adjustment. Turn the inner adjustment screw
(Fig. 9,
Item. 4
) clockwise to decrease, or
counterclockwise to increase the pilot flame. After
adjustment, replace the cover screw and tighten
firmly (Fig. 9,
Item. 4
).
13.
Observe the main burner flame (Fig. 11,
Item. 1
)
through the viewing port (Fig. 8,
Item. 1
) in the
burner cover plate. The flame should have a
smooth, firm contour and must be mostly blue in
color. If the main flame is satisfactory, go to step 14.
If the main burner flame is lazy, yellow, or lifting off
the burners, turn the gas control knob (Fig. 9,
Item. 1
) clockwise to "OFF". Shut off the main gas
piping shutoff valve. Disconnect all electric power to
the appliance and call your service technician or gas
supplier.
14.
The ignition safety shutoff must be tested. Test the
safety shutoff by shutting off the main gas piping
shutoff valve. The main burner and pilot flame
(Fig. 10,
Item. 2
) will extinguish. Within six (6)
seconds the gas control main gas solenoid should
close and make an audible sound. The ignition will
spark.
After 90 seconds, the module should go into lock out
mode and the spark should stop. Disconnect the
electric power to the appliance. Open the main gas
shutoff valve. Turn on the electric power to the unit.
A normal operating sequence should occur. If the
gas control functions satisfactorily then go to step
15. If the gas control does not function satisfactorily,
immediately turn the gas control knob (Fig. 9,
Item. 1
) clockwise to "OFF". Shut off the main gas
GA124
Natural gas
[inch W.C.]
Propane
[inch W.C.]
17
3.6
8.9
23
3.6
9.9
30
3.5
9.5
Table. 3 Required manifold pressure
Fig. 10
Proper pilot setting
Item. 1:
1/2“ to 1-1/2“
Item. 2:
flame
1
2
Fig. 11
Main burner flame profile
Item. 1:
flamelet profile
1
Содержание Logano GA124-17
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