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© Baxi Heating UK 2012
7.0
Installation of hydraulic station
7.4
Pipework installation - general (cont)
9. Venting the pipework
The hydraulic station the component includes an air
collector/separator and bleed point so an automatic air vent is
not necessary. Any section of solar pipework that falls and rises
again should be fitted with an additional air vent valve to relieve
any trapped air which may cause air locking in the system. The
automatic air vent and isolating valve used must be compatible
with solar primary systems, i.e. be resistant to glycol and
temperatures up to 180ºC.
10. Insulating the pipework
External pipework should be insulated with high temperature
resistant materials and be protected against UV degradation.
The insulation must be peck-proof and rodent-proof. Internal
pipework, especially through unheated spaces such as a loft
space, should also be insulated with high temperature resistant
materials. Mark the outside of any insulation to identify the flow
and return pipes. The collectors are supplied with 2x2m pre
insulated flexible stainless steel tubes. Additional lengths (30m)
of stainless steel flexible tubes and high temperature insulation
can be supplied.
Fig. 12
2
3
1
11
12
10
8
4
6
14
13
See Section 7.3 for Key