Potterton Housewarmer 45, Инструкция по установке и обслуживанию, Страница: 12 / 45

3. Installation Requirements – Page 12
3.4 Electricity Supply
A 230-240v ~ 50 Hz, single phase electricity supply fused to
3A, must be provided in accordance with the latest edition of
the I.E.E. Wiring Regulations and any other local regulations
which may apply.
The current rating of the wiring to the boiler must be at least
3A in accordance with BS6500, Table 16, and have a cross-
sectional area of at least 0.75mm sq. (24/0.20mm). Heat
resistant cable should be used to wire the boiler.
The method of connection to the mains electricity supply
must facilitate complete isolation of the boiler together with
any external controls fitted in the system preferably by the
use of a fused 'three pin' plug and shuttered socket outlet;
both complying with the requirements of BS1363.
Alternatively, a fused double pole switch, having a 3mm
contact separation in both poles and serving only the boiler
and external controls may be used.
3.5 Gas Supply
The gas meter and supply pipe should be checked to ensure
that they are adequate for the boiler and any other appliance
already fitted; your Local Gas Region will assist in this
matter.
The recommendations of BS 6891 & BS 6400 must be
observed. Any part of the gas supply pipe running within the
chimney recess, should be suitably protected, (e.g. coated or
wrapped with PVC tape).
3.6 Air Supply & Ventilation
The ventilation of the room containing the boiler shall include
air for combustion and draught diverter dilution.
A permanent air vent must be fitted either directly to the
outside of the building or into a room or space containing a
permanent air vent of the same effective area. The air vent
must not enter the room through the builders opening.
The minimum effective area of the air vent required is as
follows:-
45 Back Boiler and Gas Fire: 73cm²
55 Back Boiler and Gas Fire: 89cm²
Any air grille and/or duct should be so sited and of a type not
to become easily blocked or flooded and should offer low
resistance to air flow.
If an extraction fan is fitted in any position which could affect
the air supply to the boiler, then a spillage test with the fan
running as detailed in BS5440:1 must be carried out.
4. Installation – Page 12
4.1 Pre-Installation Checks
Before installing the boiler check that:-
1) All register or restrictor plates and dampers from the flue system have been removed.
2) That the chimney has been swept.
3) That all rubble has been removed from the fireplace opening.
4) That if one is to be used the fire surround and hearth have been fitted and sealed to the wall.
5) That the base of the opening is horizontal and level.
6) That all necessary openings have been made in the fireplace for pipework and gas or electricity supplies.
7) That the flue has been lined (if required).
4.2 Install the Boiler
Important
If the gas supply is to come in on the left hand side, read
paragraph 7 now.
1) Make the required fittings to the boiler.
2) Undo the two wing nuts and remove the combustion
chamber front cover.
3) Remove the burner/gas valve assembly - 1 screw and
put safely to one side.