Lpg Fuel; Related Documents; Conversion To Lpg; Shw45-325Ce - Shw85-435Ce - Lochinvar EcoShield SHW60-325CE Installation, Commissioning And Maintenance Instructions

14.0

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
14.1

RELATED DOCUMENTS

In addition to those documents listed in Section 4.1: 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
Family) 2H and the design and installation details described in the main body of the installer's guide should be
followed.
14.2

CONVERSION TO LPG

This process must be carried out in the order stated. 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.
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:
14.2.1 SHW45-325CE – SHW85-435CE
1. Remove the top and front access covers from the unit.
2. Remove the impulse tube and wiring plug from the gas valve.
3. Remove the three cap-head screws securing the gas valve to the venturi (Figure 14.1).
4. Locate the propane orifice disk from the conversion kit bag. Verify that the stamping on the orifice disk
is correct for the water heater (see Table 14.1). Place the orifice into the black rubber grommet in the
side of the gas valve ensuring the orifice and grommet are seated correctly (Figure 14.1).
5. Reposition the gas valve against the venturi and replace the cap-head screws (Figure 14.1) securing
the valve to the venturi.
6. Refit the impulse tube and wiring plug to the gas valve.
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.
Model Part No.
SHW45-325CE ORF2022
SHW60-325CE ORF2023
SHW85-435CE ORF2024
SHW115-435CE ORF2025
SHW145-435CE ORF20003
TABLE 14.1 LPG ORIFICE MARKINGS
Family) 3P is similar to that on Natural Gas (2
rd
Stamp Size
4.98  0.025
150
210 5.56  0.025
6.76  0.025
285
7.20  0.02
7.2
9.50  0.02
9.5
nd
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