18.2
LPG Gas Supply
For LPG the gas supply to the boiler must
be capable of maintaining a minimum
pressure of 37 mbar measured at the inlet
to the boiler, with all other gas appliances
working.
The complete installation MUST be
tested for soundness and purged in
accordance with C.P. 331.3
The gas valve fitted to the boiler is not
designed to withstand pressures in excess
of 60 mbar.
When carrying out the pressure test on the
service pipe-work it is essential that the gas
cock fitted to the boiler is in the closed
position, failure to do so will result in serious
damage to the boiler.
18.3
Setting The Gas Type
When the EC VCO MODELS leaves
the factory it set up for use with Natural
Gas. It can however be easily adjusted for
use with LPG
18.4
Conversion to LPG
If the appliance is being used with LPG then
a conversion kit is available form eco
hometec.
The contents of the LPG conversion kit
include the following items:
1 x Propane injector 5.7mm
1 x Injector 3.5mm
1 x 10mm plastic air box plug
(for EC 16 & 23)
1 x 15mm plastic air box plug (for EC 31)
1 x 13mm plastic air box plug (for EC 38)
To convert the appliance to LPG complete
the following procedure.
Isolate the boiler from the gas and electricity
supplies.
Disconnect the unions either side of the gas
valve.
Screw the 3.5 injector into the gas inlet side
of the valve and the 5.7mm injector into the
gas outlet side of the valve.
Close the hole in the front of the air box
(attached to the air fan assembly) using a
plastic plug included in the conversion kit.
EC38 only close the hole in the rear of the
air box (attached to the air fan assembly)
using a plastic plug included in the
conversion kit.
Re-connect the gas valve making sure the
sealing washers are located properly.
Turn on gas supply and check for gas
soundness.
Write on the identification plate that the
appliance has been converted for LPG.
All gas service pipe-work from the meter to
the boiler should be either mild steel pipe or
copper.
EC 16~38 Installation Manual page
27
