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16.0 LPG FUEL
Note! It is strongly recommended that, on LPG installations, gas detection equipment is fitted. This
equipment should be positioned near the appliance and at low level. It is also important that the space
housing the appliance is adequately ventilated at high and low level. This appliance must not be located
below ground e.g. in a cellar.
Conversion from Natural gas to LPG or vice versa must only be carried out by a suitable qualified person
following the procedures outlined within this chapter. Any seals which are broken as part of the adjustments
required must be sealed again after completing all works.
16.1
RELATED DOCUMENTS
In addition to those documents listed in Section 6.1: RELATED DOCUMENTS within the main body of the installer's guide the gas installation
should also comply with the guidance offered in the following documents.
BS 5482-1: 2005
The operation of the EcoShield™ range on LPG-Propane (3
installation details described in the main body of the installer's guide should be followed.
16.2
CONVERSION TO LPG
This process must be carried out in the order stated before the water heater is switched on. Failure to follow the
following procedure may lead to non-warrantable damage to the water heater. The conversion MUST be carried out
by a competent person certified for work on LPG fuel.
In the event of any seal or gasket being broken it is essential that the seal or gasket be replaced. Contact Lochinvar
limited for replacement seals and gaskets.
Due to the gas/air ratio design of the water heater, the conversion to LPG involves inserting an orifice plate into the gas valve to reduce the gas
flow.
Model
SHW35-245CE
SHW46-325CE
SHW61-325CE
SHW86-410CE
SHW116-410CE
SHW146-410CE
LPG ORIFICE MARKINGS
If the water heater is already installed and operational, you must turn off the gas supply, turn off the power supply and allow the water heater to
cool before proceeding. The conversion procedure is as follows:
Code of practice for domestic butane and propane gas burning installations.
Part 1: Installations at permanent dwellings, residential park homes and commercial premises, with installation
pipework sizes not exceeding dn25 for steel and dn28 for corrugated stainless steel or copper.
Family) 3P is similar to that on Natural Gas (2
rd
Part No.
ORF20017
ORF2022
ORF2023
ORF2024
ORF2025
ORF20003
Family) 2H and the design and
nd
Stamp
125
150
210
285
7.2
6.0
Size
4.57 0.025
4.98 0.025
5.56 0.025
6.76 0.025
7.20 0.02
6.00 0.02
53
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