HYDRAULIC FITTINGS
MI
RI
MI
RI
As
A
B
C
D
E
F
The following section specifies the requirements of the heating unit hydraulic fittings.
Description
S - AF
115
150
200
240
280
MI System supply
2” M
Ø
RI System return
2” M
Ø
As Syphon fitting
25
mm
A
400
mm
B
728
mm
C
175
175
245
245
245
mm
D
848
848
1088
1088
1088
mm
E
279
mm
F
363
mm
b
WARNINGS
•
Never soften water using the ion exchange principle.
•
Never fill the system using distilled or demineralised water, as these cause serious corrosion of the aluminium heat
exchanger. The system must be filled and replenished with softened water to reduce overall hardness. The water must
also be treated to maintain the pH factor within the envisaged range, to avoid the risk of corrosion.
•
On a register, note the quantity of filling water, top-up water, water quality readings and water treatment used.
•
Install a meter to control the quantity of filling and top-up water.
•
The conductivity of the untreated water in the system must NEVER exceed 600 µs/cm.
•
If the system water is treated, strictly observe the instructions of the manufacturer of the product used, and ensure that
conductivity NEVER exceeds 2000 µs/cm.
•
In the event of generator replacement, it is COMPULSORY to wash the entire system.
NOTE: If conductivity exceeds the values specified above, drain the system, flush it and fill with clean and treated tap water.
- 19
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INST
ALLA
TION
