7. ASSEMBLING AND INSTALLATION GUIDELINES
Remeha Gas 450
8
8.1 General
The gas train is fitted behind the front casing.
The local Gas authority should be consulted to ensure
that an adequate pressure and supply is available at
the boilers maximum output. To minimise risk of sediment
or foreign particles entering the control valves, an approved
filter may be fitted into the pipe work downstream.
The gas supply should be conform to the British Gas
safety regulations.
8.2 Gas pressure
Cat. I
2
H
Maximum gas pressure at inlet 100 mbar.
Burner pressure:
- full load : 14.0 mbar (100%)
- part load : 5.0 mbar (60%)
- injector size: 3.85 mm Ø
Note: LPG version on request.
8. GAS SUPPLY
9. ELECTRICAL SUPPLY
9.1 General
The electrical installation must conform to the IEE
regulations and also to local authority requirements.
9.2 Control panel
A control panel is fitted behind the front casing on the
same side as the water and gas connections.
9.3 Electrical connections
The boiler is pre-wired. Only the main supply should be
wired to the control panel.
9.4 Electrical data
Main supply : 230 V-50Hz (L/N).
Running current: 155 VA.
Installed fuse : 6 Amp.
7.4 Pocket for instrument panel
The thermostat pocket is fitted in the flow connection of
the boiler.
7.5 Water pressure
Each section is hydraulically tested to at least 10 bar.
Maximum test pressure for the assembled boiler block is
8 bar. Operating pressure between 0.8 bar and 6 bar.
Optional the boiler can be fitted with a water pressure
switch, set at 0.8 bar.
7.1 General
The boiler is suitable for operating at a maximum working
pressure of 6 bar and a minimum pressure of 0.8 bar.
Boiler can be installed in open or closed systems.
7.2 Boiler assembly
Broag can provide special tools on loan for the boiler
assembly with detailed building instructions. However,
building supervision and/or actual boiler erection services
can be provided by Broag or an approved boiler erection
engineer.
7.3 Water connections
The boiler water connections (2
1
/
2
" BSP) are fitted at the
rear of the boiler (can be assembled either left or right).
The two end sections have a
3
/
4
" BSP tapping with plug,
one end section to accept a drain/off cock (to be assem-
bled on the same side as the gas/water connections)
and other end section to accept a plug.
