andrews L24/31, Installation Manual, Operation And Service Manual

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INSTALLATION SECTION 3
The heater must not be installed in any location which contains a bed, bath or shower.
The heater must not be installed in a basement or cellar.
There must be easy access to the boiler room and heater at all times.
A clearance of 800mm (31
1
⁄
2
in) for Hi-Flo and 300mm for Standard Range should be left
at the front of the heater for removal of the burner.
Clearances at the sides and rear of the heater should be at least 305mm (12in).
Service clearances for removal of the anodes and flue baffles should be provided as
detailed below. Note! Where restricted headroom is a problem, articulated anodes can be
supplied. Andrews Part No. C333.
STANDARD RANGE
Models L24/31, L32/35, L40/36 762mm (30 in)
Model L63/71 1143mm (45 in)
Model L84/71 1270mm (50 in)
HI-FLO RANGE
Model L32/143 597mm (23 1 ⁄
2
in)
Model L81/251 1300mm (52 in)
Models L65/169, L62/309, L54/399 1143mm (45 in)
The floor on which the heater is installed must be non-combustible, flat, level and of
sufficient strength to withstand the weight of the heater filled with water (see Section 2,
Technical Data) and should satisfy the requirements of the Local Authority and Building
Regulations.
NOTE:
If the heater is in an exposed position and out of use during a period of heavy frost, it is
recommended that the whole system is drained down to prevent damage due to the
formation of ice inside the storage vessel.
THE ANDREWS WATER HEATERS COVERED IN THIS MANUAL MUST ONLY
BE USED WITH PROPANE OR BUTANE GAS.
Contact Calor Gas who will provide the appropriate type and size of LPG supply vessel
and ensure it's safe location and installation.
The installation of the gas supply must conform to LPGA Code of Practice, 22 LPG Piping
Systems: Design and Installation plus the requirements of British Standards and Codes of
Practice listed in Section 1 of this manual.
Andrews water heaters are unregulated and a second stage regulator must be installed to
give an inlet pressure to the appliance as follows:
PROPANE: 37mbar (14.86 in wg)
BUTANE: 28mbar (11.26 in wg)
Gas Supply Cock, Standard Models
Fit the gas supply cock immediately upstream of the gas control thermostat using a
suitable jointing compound and connect to the gas supply. Do not apply heat in close
proximity to the gas thermostat as damage to the control will result. A pressure test point
nipple is fitted to the gas control thermostat at the gas inlet to test the incoming gas
pressure.
LOCATION
7
GAS SUPPLY