Supplied By www.heating spares.co Tel. 0161 620 6677
8
221473B
■
For larger systems use an additional expansion vessel, see Section 4.
❋
Boiler starts at an inlet pressure of 0.5bar but requires 0.8bar for maximum output.
●
Ball valves are fitted in water and gas connections, plus a drain point on all water connections.
Lift Weight
37.0kg (81.4lb)
Total Weight
50.4kg (111lb)
●
Gas connection
Rc
1
/
2
(
1
/
2
in BSPT)
●
Heating and return
22mm compression
●
Domestic hot water
15mm compression
Safety valve
Preset 3bar (43.5lbf/in
2
)
Safety valve discharge
15mm copper
Water content
1.74 litres (0.38 gallon)
■
Expansion vessel capacity 8 litres (1.76 gallons)
Heating cold fill
0.7bar
pressure minimum
(10.1lbf/in
2
)
❋
D.H.W
0.5 to 10bar
working pressure
(7.25 to 188lbf/in
2
)
■
Maximum Heating
119 litres
system water
(26.2 gallons)
content using
with a cold
fitted expansion
fill pressure
vessel.
of 0.7bar
Electrical supply
230V~50Hz
Electrical rating
154W fused 3A
Internal Fuse rating
1) Type T2A
2) Type T630mA
NOMINAL
kW
20.21
36.2
11.63
HEAT
INPUT
(NETT)
Btu/h
68,953 123,500
39,678
NOMINAL
kW
17.6
29.3
9.1
HEAT
OUTPUT
Btu/h
60,000 100,000
31,000
BURNER
mbar
6.2
15.5
1.8
PRESSURE in.wg
2.6
6.2
0.7
APPROX.
m
3
/h
2.1
3.4
1.2
GAS RATE
ft
3
/h
75.8
121.8
43.4
TABLE 1
C.H. Max
D.H.W Max
MIN
TABLE 2
1 General Data
1.5 Data Label
The data label is on the inner case cover.
1.6 Data
See Tables 1 and 2.
1.7 Gas Supply
The gas installation must be in accordance with the rules in force
in the countries of destination.
The supply from the governed gas meter must be of adequate
size to provide a steady inlet working pressure of 20mbar (8in
wg) at the boiler.
1.8 Electrical Supply
WARNING: The boiler must be earthed.
The electrical installation must be in accordance with the rules
in force in the countries of destination.
All system components shall be of an approved type.
Connection of the whole electrical system of the boiler and any
heating system controls to the electrical supply, must be through
one common isolator.
Isolation should be by a double pole switched fused spur box,
with a minimum separation of 3mm in both poles. The fused
spur box should be readily accessible and preferably adjacent
to the appliance. It should be identified as to its use.
Alternatively connection can be made through an unswitched
shuttered socket and 3A fused 3 pin plug.
The mains supply cable and other cables connected to the
boiler must be the PVC flexible type of at least 0.75mm
2
, (24/
0.20mm).