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Placing the Boiler in Operation
Operating Instructions
11.2
STOP! Read the safety precautions on page 28 of this
manual.
1. Wait five (5) minutes to clear out any gas. Then
smell for gas, including near the floor. If you smell
gas, STOP! Follow "B" in the safety information on
page 28. If ou do not smell gas, go to the next step.
2. Locate the pilot assembly by looking through the
access viewing port (Fig. 25, Item. 1) on the burner
front plate.
3. Turn the gas control knob (Fig. 26, Item. 1)
counterclockwise to position "ON".
4. Turn on the electrical power to the application.
5. Set the thermostat to the desired setting to activate
the boiler (Thermostat adjustment should be at least
10 °F above the room temperature).
6. The ignition control should initiate sparking at the
pilot. The pilot should light and then the main
burners should light. If the main burners do not light,
shut off the main gas piping shutoff valve. Shut off
all electric power to the appliance and call your
service technician or gas supplier.
7. If the main burners light, then the gas fittings, union
and orifices must be tested for leaks with a soap and
water solution. If no leaks are found then go to step
9. If any leaks are found, turn off gas control knob
(Fig. 26, Item. 1) clockwise to "OFF". Turn off all
electric power to the appliance, set the thermostat to
lowest setting.
8. Repair leaks. Repeat steps 1 through 7.
9. Check the supply pressure while the boiler is
running. Pressure must be between 4.7 and 10.5
inches WC for natural gas. Pressure must be
between 11 and 13 inches WC for propane gas.
Record supply pressure on the boiler start-up
procedure on page 33.
10. Check manifold pressure. Set the manifold pressure
according the values in Table. 11. To adjust the
manifold pressure (Fig. 26, Item. 5), remove the
capscrew from the gas control and remove the hose
from the manometer to the burner box test port
(Fig. 23, Item. 6). Turn the pressure regulating
adjusting screw clockwise to increase, or
We reserve the right to make any changes due to technical modifications!
Installation, Operation and Maintenance Manual Sealed Combustion Gas Boiler Logano GA244 • Issue 02/2004
Fig. 25 Burner tray box
Item. 1: Access viewing port
1
4
3
Fig. 26 Gas control valve
Item. 1: Gas control knob (set to "ON")
Item. 2: Test port screw for gas supply measurement
Item. 3: Test port screw for manifold pressure measurement
Item. 4: Protective screw for pilot pressure adjustment
Item. 5: Protective screw for manifold pressure adjustment
Natural Gas
GA244
[inch W.C.]
37
3.77
44
3.65
53
3.73
62
3.77
Table. 11 Required manifold pressure
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de
11
1
2
5
Propan
[inch W.C.]
8.03
7.63
8.11
6.15
29
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