Bypass Valve Dismantling - BaltGaz NEVALUX 7224 User Manual

5) unscrew on the low panel three screws of the pump's fastening 1 and two screws 2 of bithermic manifold
fastening;
6) disconnect a screw termination 3 (see scheme. 17) with the pump's power cables out of the conneсtor;
7) put off a bracket 4 of pipe's fastening from the pump's pipe and put a pipe up;
8) disconnect a fitting of manometer 6, by pulling a bracket of fitting's fastening 5 out of the pump's body;
9) disconnect cables from the pressure sensor 7;
10) put off a bracket 8 of CH output fastening and put it aside;
11) unscrew screws 9 of bithermic manifold fastening 10 to the pump;
12) dismount a bithermic manifold;
13) Take out a pump by pulling it hard to the right and up.
Assembly is performed in the reverse order.

17.3 Bypass valve dismantling

To dismount a bypass valve it is necessary:
1) switch the boiler off(see p.
2) block inlet and output stop valve in the boiler, drain the
water out of the boiler (see section
there are not stop valves, drain the water out of the whole
heating system);
3) put a casing off from the boiler (see p.
4) put off a bracket1 of CH output pipe's fastening ( see
scheme.);
5) take a pipe 2 out of the bithermic manifold 3;
6) take out a bypass valve (see Annex I,
page45);
7) a faulty bypass valve to replace.
Assembly is performed in the reverse order.
17.4 Expansion tank dismantling
To dismount an expansion tank it is necessary:
1) switch the boiler off(see p.
2) block inlet and output stop valve in the boiler, drain the water out of the boiler (see section
there are not stop valves, drain the water out of the whole heating system);
Scheme 17. Pump dismantling
10.4
, page 21);
10.5
, page 21) (if
17.1
, page 36);
10.4
, page 21);
Scheme 18 bypass valve dismantling
10.5
User's manual
, page 21) (if