23
9 L.P.G. INSTRUCTIONS
TECHNICAL DATA
G31
Inlet pressure (LPG)
37
mbar
Maximum burner pressure
36,00
mbar
Minimum burner pressure
4,80
mbar
Gas rate
2,33
Sm
3
/h
Injector size
13 x 0,78
mm
RELATED DOCUMENTS
BS 5440
PART 2 Flues
BS 5440
PART 1 Flues & ventilation
BS 5546
PART 1 Installation of gas hot water supplies for
domestic purposes
BS 6891
Low pressure installation pipes
BS 5482
Domestic butane & propane gas burners
in permament dwellings
9.1 Gas supply
The gas supply must be connected to the appliance by a competent
LPG installer and must be of sufficient size to supply the appliance at
its maximum output.
An existing supply must be checked to ensure that it is of adequate
size to deal with the maximum rated input of this and any other appli
-
ances that it serves.
9.2 Gas supply installation
The entire installation, including the meter, must be purged and
checked for gas soundness.
9.3 Checking and adjusting burner pressure
Although the burner pressure is factory set, it is necessary to check
it during servicing or if the gas valve has been removed. Isolate the
appliance from the electrical supply and attach a suitable manometer
to the gas valve outlet test nipple.
SETTING THE MAXIMUM BURNER PRESSURE
Light the appliance as described in 5.10 & 6.4 and compare the read-
ing on the manometer with the value described in 2.2 TECHNICAL
DATA. If adjustement is required, remove the protective cap from the
gas valve modulating coil assembly and turn the outer (10mm) nut
clockwise to increase, or counterclockwise to decrease the burner
pressure.
b
You should ensure that one or two outlets are open during the
above procedure. This will ensure that the output of the appli-
ance (burner pressure) is not compromised due to a high outlet
temperature.
SETTING THE MINIMUM BURNER PRESSURE
Once the maximum burner pressure has been checked and/or adjust-
ed, remove one of the grey wires from the modulating coil. Compare
the reading on the manometer with the value described in 2.2 TECH-
NICAL DATA If adjustement is required, turn the inner (red) cross-head
screw clockwise to increase, or counter-clockwise to decrease the
burner pressure, whilst ensuring that the outer (10mm) nut does not
move. When checking and/or adjustement has been completed, iso-
late the appliance from the electrical supply, replace the protective cap,
refit the grey wire to the modulating coil, remove the manometer, and
tighten the outlet test nipple.
b
Important, a gas important, a gas soundness check must be car-
ried out.
10 GAS TRANSFORMATION
Converting gas from one form to another can be done easily, even with
the appliance already installed.
b
The conversion shall only be carried out by qualified personnel.
The water heater is supplied to operate with methane gas (G20) or LPG
(G31) in accordance with the indications of the product label.
The appliance can be converted from one type of gas to another using
one of the specific kits provided upon request:
- Methane conversion kit
- LPG conversion kit
Proceed as follows to perform the conversion:
- switch off the electrical supply
- remove in succession the casing, the air distribution box cover
and the combustion chamber cover
- disconnect the glowplug cable connection
- remove the lower cable grommet from its seat on the air distri-
bution box
- disconnect the burner thermostat (I) removing the relative fas-
tening clip
- fully unscrew the top nut of the gas valve train
- loosen the nuts (A) of the by-pass train
-
loosen the nut (B) of the burner/flow meter train
- take out the clips (C) securing the trains to the burner
- disconnect the trains (D) from the burner
-
unscrew the 4 screws (E) fixing the burner to the back board
-
take out the burner (F), unscrew the screws (G) fixing the collec
-
tor to the burner
- from the conversion kit take the complete LPG collector and rel-
ative LPG burner flange.
-
fix the burner, the collector and the flange using the s
crews pre-
viously removed.
F
G
B
G
H
A
D
C
I
E
Summary of Contents for Vokera Easi-Flo LE
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