Basic Setting For The Gas/Air Ratio; Checks And Adjustments After Commissioning; Finalizing Work - REMEHA CALORA TOWER GAS 15S EX Installation And Service Manual

6. Commissioning
8
A
B
9 10
6.5

Checks and adjustments after commissioning

64
6.4.3.
If the gas/air ratio is out of adjustment, the gas valve unit has a basic
setting. To do this, proceed as follows:
1. .
2. Close the gas valve on the boiler.
3. Remove the air inlet flue on the venturi.
4. Unscrew the top connection on the gas valve unit.
5. Disconnect the connector located under the fan.
6. Release the 2 clips holding the fan/mixing elbow unit in place on
the heat exchanger.
7. Completely remove the fan/mixing elbow unit.
¼ For steps 3 to 7 inclusive, see chapter: "Checking the burner
and cleaning the heat exchanger", page 81
8. Turn the setting screw A on the gas valve unit to modify the
position of the restrictor.
9. Turn the setting screw B on the gas valve unit anticlockwise until
it matches the front panel.
10.Turn the setting screw B on the gas valve unit by 6 turns clockwise.
11.Follow the procedure in reverse to re-assemble all of the
T001985-B
components.
6.5.1.
1. Remove the measuring equipment.
2. Put the flue gas sampling plug back in place.
3. Refit the front panel.
4. Push key > to return the boiler to normal operating mode.
5. Raise the temperature in the heating system to approximately
70°C.
6. Shut down the boiler.
7. After about 10 minutes, vent the air in the heating system.
T001522-A
8. Switch on the boiler.
9. Check the tightness of the flue gases evacuation and air inlet
connections.
10.Checking the hydraulic pressure. If necessary, top up the water
level in the heating system (recommended hydraulic pressure
between 1,5 and 2 bar).
11.Tick the gas category used on the data plate.
12.When installation has been completed, affix the data plate
provided in the instructions bag to the casing of the appliance in a
position where it can be seen
13.Explain the operation of the installation, the boiler and the
regulator to the users.
14.Give all the instruction manuals to the user.
CALORA TOWER GAS 15S EX CALORA TOWER GAS 25S EX

Basic setting for the gas/air ratio

Finalizing work

CALORA TOWER GAS 35S EX
22/04/2016 - 300026141-001-07