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INSTRUCTIONS— GAS AIR HEATER -
MINIGAZ Eco
MH Eco, MC Eco, MV Eco– NT09004I-GB – 29/11/2017
6-1 Gas modification
Gas air blowers are equipped with atmospheric burners which can be used with Natural Gas or Propane.
T
HESE
CHANGES
HAVE
TO
BE
DONE
BY
QUALIFIED
PEOPLE
For gas modification, do apply the hereafter procedure :
1– Remove the main supply cable connector and switch off gas supply.
2– Unscrew the flange of the gas valve (Rep. 1) and the 3 screws (Rep.2) which fixes the gas manifold on
the burner.
3 - Change injectors (see data tables, page 24).
4 - Screw new injectors (Rep.3), replace the gaskets (Rep.4) and check air tightness.
Injectors have to be
screwed without any path.
5 - Refit the gas manifold. When connecting the gas line, do not forget (or damage) the 0 ring of the flange.
6 -
Check air tightness.
7 - Adjust the pressure on the regulator.
.
CAUTION: Electrical and gas supplies have to be switched off
6– GAS DATA
2
3
4
1
Do gas pressure adjustment when burner in operation
Do gas pressure adjustment as follow:
1– Remove the protection of the gas valve pressure adjustment screw.
2– Unscrew pressure test point and put the manometer (5)
3- Adjust manifold pressure(6), according the table data.
3–
After adjustment, do not forget to put back the protection
screw and to switch off the pressure intake.
4 -
Check air tightness after adjustment.
5
6