13
6.3
CLEARANCES
The location chosen for the equipment must permit the provision for a satisfactory flue system and, where necessary,
an adequate air supply. The location must also provide adequate space for servicing and air circulation around each
unit. This includes any electrical trunking laid across the floor and to the appliance.
See
Figure 3.1
&
Figure 3.2
for dimensions/clearances. Further details regarding locations are given in
BS5440
or
BS6644
as appropriate.
6.4
CONDENSATE DRAIN
The condensate drain is located on the left hand side of the water heater. It is fitted with a ½” PVC tee and union, this
should be connected to an appropriate condensate drain, sloping continuously away from the water heater at an
angle of at least 3
(50mm per metre).
The Water Resources Act requires that trade effluent is discharged to municipal sewers between pH 6.5 and 10.0. If
it is determined that these levels cannot be achieved, an in-line condensate neutralisation kit is available from
Lochinvar Limited. This unit is capable of neutralising 4000 litres of condensate to a pH of 7.0 before releasing it to a
drain.
7.0
GAS SUPPLY
The Lochinvar EcoKnight™ 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 14: LPG FUEL.
7.1
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.
7.2
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.
7.3
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 14:
LPG FUEL
for information on LPG pipework installation guidance.
7.4
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
7.5
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.
