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Notes:-
1.
The BoilerMate 225 appliance is suitable for use in large properties because it produces the same 'peak hour output' as a typical
350-400 litre unvented cylinder. [Ask for report - Unvented v's Integrated Thermal Storage]. [Please note that this model requires
a larger cupboard and a 686mm wide door]. For properties requiring the BM 225 the incoming main should be a minimum of
35mm MDPE with a pressure of not less than 2 bar dynamic and an adequate flow in line with the pipe sizing calculations.
In many cases, properties of this size will benefit from having 2 smaller sized appliances located adjacent to the areas of
peak hot water use. This will allow 2 heating zones to be provided and remove the need to provide a secondary circulation
on the hot water system.
2.
Plastic feed and expansion cistern will be supplied separately including ballvalve, float and overflow fitting.
3.
The flow rates are based on a 35°C temperature rise and assume normal pressure and adequate flow to the appliance. The actual
flow rate from the appliance is automatically regulated to a maximum of 28 litres/min.
4.
Models will be available in Hard and Soft water versions (suffixed 'H' or 'S').
5.
Unit is supplied on a 100mm high installation base.
6.
The domestic hot water outlet temperature is automatically regulated to approximately 55°C at the bath flow rate of 18 litres/min
recommended by BS 6700. The temperature is not user adjustable.
B
M
1
2
5
B
M
1
4
8 5
g k
1 6
g k
1
3 7
g k
1
6 8
g k
G
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1
/ 5
0 5
G
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s o
1
G
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1
/ 5
0 5
G
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f d
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1
G
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f d
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1
/ 5
0 5
G
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n
f d
s o
1
2 2
m
m
2 2
m
m
2 2
m
m
2 2
m
m
5 1
m
m
5 1
m
m
2 2
m
m
2 2
m
m
5 1
m
m
5 1
m
m
R
1⁄2
' '
R
1⁄2
' '
0 1
m
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s r
0 1
m
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p
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5 3
t l
/ s
m
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p
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5 3
t l
5 1 W
k
0 2 W
k
k 9
W
k 9
W
1
3 -
2
3 -
1
1
1
2
1.0 DESIGN
1.2 TECHNICAL DATA
5
B
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1
8
5
5 6
g k
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5 1
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0 5
G
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1
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0 5
G
/ 5
0 5
G
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f d
s o
1
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0 5
G
/ 5
0 5
G
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f d
s o
1
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0 5
G
2 2
m
m
2 2
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5 1
m
m
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m
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t l
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2
4 -
2
1
Page 5
B
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2
1
0
B
M
2
2
6 7
g k
8 8
g k
2
6 4
g k
2
8 7
g k
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n
f d
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1
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0 5
G
u r
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f d
s o
u r
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f d
s o
1
/ 5
0 6
G
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f d
s o
u r
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f d
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1
/ 5
0 6
G
u r
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f d
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8 2
m
m
8 2
m
m
2 2
m
m
2 2
m
m
5 1
m
m
5 1
m
m
2 2
m
m
2 2
m
m
5 1
m
m
5 1
m
m
R
1⁄2
' '
R
1⁄2
' '
0 1
m
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s r
0 1
m
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p
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5 3
t l
/ s
m
n i
u
p
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5 3
t l
0 3 W
k
5 3 W
k
k 9
W
k 9
W
3
5 -
4
6 -
1
2
2
3
4
2
4
2
5
1
/ 5
0 5
1
/ 5
0 6
1
/ 5
0 6
s r
/ s
m
n i
4
0
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