Fault Finding & Servicing - Heatrae Sadia MEGAflo Installation Manual

9
Fault Finding & Servicing
9.1 IMPORTANT
i) Servicing should only be carried by authorised Heatrae Sadia Service Engineers or
Agents or by installers competent in the installation and maintenance of unvented
water heating systems.
ii) Any spare parts used MUST be authorised Heatrae Sadia parts.
iii) Disconnect the electrical supply before removing any electrical equipment covers.
iv) NEVER bypass any thermal controls or operate system without the necessary safety
valves.
v) Water contained in the Megaflo unit may be very hot, especially following a thermal
control failure. Caution must be taken when drawing water from the unit.
9.2 SPARE PARTS
A full range of spare parts are available for the Megaflo range. Refer to the Technical Data
label on the unit to identify the model installed and ensure the correct part is ordered.
Description
Immersion heater (lower)
Immersion heater (upper)
Immersion heater gasket
Immersion heater backnut
Immersion heater key
Immersion heater blanking plug
Tundish
Expansion relief valve cartridge - 8bar
Expansion valve complete
Cold water combination valve body incl. isolating valve
Check valve housing
Pressure reducing valve cartridge - 3bar
Pressure reducing valve housing
Cold water combination valve complete
Temperature/pressure relief valve
Expansion core unit
Swept tee
Set of compression nuts and olives
Drain valve
Insulation set (T&P relief valve)
Direct units only:
Combined thermostat/thermal cut-out
Terminal cover
Accessory kit (direct)
Indirect (CL) units only:
2-port motorised valve
Indirect thermostat
Indirect thermal cut-out
Terminal cover
4 way terminal block
Wiring centre
Accessory kit (indirect)
Part no.
95 606 963
95 606 964
95 611 822
95 607 869
95 607 861
95 605 881
95 605 838
95 605 870
95 607 028
95 605 029
95 605 028
95 605 026
95 605 027
95 605 021
95 605 810
95 605 041
95 605 812
95 607 838
95 605 051
95 607 089
95 612 026
95 607 836
95 607 157
95 605 819
95 612 697
95 612 698
95 607 837
95 607 902
95 607 008
95 607 091
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