6
221788B
1 General Data
1.5 Gas Supply
The gas installation shall be in accordance with the current
issue of BS6891.
The supply from the governed meter must be of adequate size
to provide a steady inlet working pressure of 20mbar (8in wg) at
the boiler.
On completion test the gas installation for soundness using the
pressure drop method and suitable leak detection fluid, purge
in accordance with the above standard.
1.6 Electrical Supply
WARNING. This boiler must be earthed.
All system components shall be of an approved type and shall
comply with and be connected in accordance with the current
issue of BS7671 and any applicable local regulations.
Connection of the boiler and system controls to the mains
supply must be through a common isolator and must be fused
3A, maximum. This method of connection must be by a fused
double pole isolating switch, with a minimum contact separation
of 3mm on both poles. The switch should be readily accessible
and preferably adjacent to the appliance. It should supply the
appliance only and be easily identifiable as so doing.
Alternatively, an unswitched shuttered socket outlet and 3A
fused 3 pin plug both to the current issue of BS1363 may be
used, provided that they are not used in a room containing a
bath or shower.
Wiring to the boiler must be PVC insulated type to the current
issue of BS6500 Table 16, not less than 0.75mm
2
(24/0.20mm).
1.7 Contents of Packaging
There are two packs, one contains the boiler, refer to Section 4.1
for contents.
The other pack contains the balanced flue terminal assembly,
wall duct and flue hood assembly.
Refer to Section 2.3 to check that the flue terminal assembly
supplied is suitable.
1.8 Water System
This boiler shall only be used on an unrestricted open vented
system with the water supply taken from a feed and expansion
cistern having a head of 27m (90ft) maximum.
This boiler must not be connected to a sealed water system.
1.9 Drain
System
A draining tap must be provided at the lowest points of the
system which will allow the entire system, boiler and hot water
cylinder to be drained.
Draining taps should be to the current issue of BS2879.
Boiler
A draining point is fitted at the bottom right hand side of the heat
exchanger. Cover controls to avoid water damage. If required
remove the combustion chamber front cover to improve access.
RANGE RATING
NOMINAL
kW
HEAT
INPUT
(GROSS)
Btu/h
NOMINAL
kW
HEAT
OUTPUT
Btu/h
BURNER
m bar
SETTING
PRESSURE
in.w.g
APPROX
m
3
/h
GAS
RATE
ft
3
/h
TABLE 2.
7.52
9.25
10.99
25,650
31,575
37,500
5.86
7.33
8.79
20,000
25,000
30,000
5.5
9.1
12.7
2.2
3.7
5.1
0.72
0.89
1.06
25.5
31.5
37.5
min
medium
max
2.35Litre
(0.52gal)
44.5kg
(98lb)
34kg
(75lb)
DATA TABLE 1.
DATA LABEL
Bottom right hand side of case
ELECTRICITY
SUPPLY
WATER
CONNECTION
GAS
CONNECTION
WATER
CONTENT
LIFT WEIGHT
( I n c l u d i n g
Terminal)
TOTAL DRY
4 x 22mm copper pipes from
top of case
Rc
1
/
2
in.
230V~50Hz, fused 3A.
WEIGHT
BURNER INJECTOR MARKING: 203099
PILOT INJECTOR MARKING: 7215
1.10 Safety Valve
A safety valve need not be fitted to an open vented system.
1.11 Location
This boiler is not suitable for outdoor installation.
This boiler may be installed in any room, although particular
attention is drawn to the requirements of the current issue of
BS7671 with respect to the installation of a boiler in a room
containing a bath or shower. Any electrical switch or boiler
control utilising mains electricity should be placed so that it
cannot be touched by a person using the bath or shower.
The electrical provisions of the Building Standards (Scotland)
Regulations apply to such installations in Scotland.
The boiler must be mounted on a flat wall which is sufficiently
robust to take its total weight.