12 – Appendix UK
3.2.4 Unvented package installation, DHP-AQ Maxi
DHP-AQ Maxi
126
80
128
96
80
91
80
129
Unvented manifold assembly
(see figure 1)
96
10 11
13
12
12
100
113
5
71
110
132
85
Figure 6. The principal installation solution of the unvented package on DHP-AQ Maxi
Position Name
5 Heat pump unit
10 Supply line heating system
11 Return line heating system
12 Cold water
13 Hot water
71 Flow guard
80 Shut-off valve
85 Venting valve
91 Strainer
96 Flexible hose
100 Safety relief valve
110 Expansion vessel
113 Expansion heating system
126 Factory fitted combined Temperature and pressure relief valve*
128 Double check valve with Shut-off valve
129 Unvented manifold assembly: Pressure reducing valve, Safety relief valve, Non-return valve
132 Flexible hose Unvented package
*
) The water heater tank in DHP-Q Maxi models is factory fitted with a Temperature and pressure relief valve.
The connection from this valve must not be used for other purposes other than discharge pipe connection.
Please see chapter 5.3 Discharge pipe arrangement.
Note! No valve should be fitted between the safety relief valve and the storage cylinder.
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