Gas Supply; Service Pipes; Meters; Gas Supply Pipes - Lochinvar EcoShield SHW35-245CE Installation, Commissioning & Maintenance Instructions

9.0

GAS SUPPLY

The Lochinvar EcoShield™ range is suitable for use on second and third family gasses 2H - G20 - 20mbar and 3P - G31 - 37mbar. Details
relating to Natural Gas (2H) appear below; for details relating to Propane (3P) please refer to Section 16.0 LPG FUEL.
9.1

SERVICE PIPES

The local gas distributor must be consulted at the installation planning stage in order to establish the availability of an adequate supply of gas.
An existing service pipe must not be used without prior consultation with the local gas distributor.
9.2

METERS

A new gas meter will be connected to the service pipe by the local gas distributor contractor. An existing gas meter should be checked, preferably
by the gas distributor, to ensure that it is adequate to deal with the rate of gas supply required.
9.3

GAS SUPPLY PIPES

Supply pipes must be fitted in accordance with IGE/UP/2. Pipework from the meter to the equipment must be of adequate size. The complete
installation must be purged and tested as described in IGE/UP/1. Refer to Section 16.0 LPG Fuel for information on LPG pipework installation
guidance.
9.4

BOOSTED SUPPLIES

Where it is necessary to employ a gas pressure booster, the controls must include a low-pressure cut-off switch at the booster inlet. The local
gas distributor must be consulted before a gas pressure booster is fitted. For details of how to connect a low-pressure cut-off switch, please
refer to Section 11 Electrical Supply
9.5

PLANT-ROOM CONTROL VALVE

A manual valve for plant-room isolation must be fitted in the gas supply line. It must be clearly identified and readily accessible for operation,
preferably by an exit.
9.6

EQUIPMENT GAS SYSTEM LEAK CHECK

An approved gas-inlet appliance isolating valve and union should be installed for each unit in a
convenient and safe position and be clearly marked.
Ensure that the gas-inlet appliance isolating valve is in the OFF position. Although the equipment receives a gas leak check and gas train
component integrity check prior to leaving the factory, transit and installation may cause disturbance to unions, fittings and components. During
commissioning a further test for tightness should be carried out on the equipment gas pipework and components.
Care must be taken not to allow leak detection fluid on or near any electrical parts or
connections.
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