30
30
Fault Finding & Servicing
9.3 FAULT FINDING
The Fault Finding chart overleaf (Table 2) will enable operational faults to be identified and their
possible causes rectified. Any work carried out on the Megaflo unvented water heater and its as
-
sociated controls MUST be carried out by a competent installer for unvented water heating systems.
In case of doubt contact the Heatrae Sadia Service Department (see Section 12).
Figure 15 - Exploded view of the Cold Water Combination Valve and Expansion Core Unit
Valve Body
95 605 029
Check Valve Housing
95 605 028
Pressure Reducing
Valve Housing
95 605 027
Pressure Reducing
Valve Cartridge (3 bar)
95 605 026
Cold Water Combination
Valve Complete
95 605 021
Strainer Mesh
Housing Securing
Screws (4 off)
Compression Nuts
and Olives
Expansion Cartridge
95 605 870
Expansion Valve
(body only)
95 607 028
Expansion Core Unit
(brass tee only -
incorporates
check valve)
95 605 041
