4.13 Diagram water hardness
To avoid damage due to forming of boiler scale in the boiler
Fig. 25
has to be ob-
served
Fig. 25: Diagram water hardness
0
2
4
6
10
12
14
16
1
20
22
24
26
2
30
1000
1100
1200
1300
1400
1500
1600
1700
1 00
1 00
2000
2100
2200
2300
2400
2500
2600
2700
ma [l]
dH
l
/
l
o
m
m
4
5
2
3
1
2
4
1
7
0
1.650
1.570
1.500
1.430
Water hardness
W
a
ter v
o
lume
Description : The boiler type, the water hardness and the water volume must be known. If the volume is above
the curve, a partial softening of the tap water or addition of hardness stabilsiser are required.
Example:
POWER HT-A 1.430, Water hardness 24°dH, 1300 l Water volume => no addition required
The usual refill volume of the plant has been taken into account.
Prior to installation
7
3
Summary of Contents for POWER HT-A 1.430
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Page 13: ...3 4 Wiring diagram Fig 3 Wiring diagram Technical Data 3 1 ...
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Page 43: ...Connection diagram Prior to installation 3 4 ...
Page 45: ...Connection diagram Prior to installation 5 4 ...
Page 47: ...Wiring plan right POWER HT A Prior to installation 47 ...
Page 48: ...Wiring plan left POWER HT A Prior to installation 48 ...
Page 49: ...4 17 Legend Prior to installation 9 4 ...
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