Heatrae Sadia ELECTROMAX Installation & Servicing Instructions Manual page 39

9.3.6 Removing the Automatic Bypass Valve
(see diagram 42, page 39)
(a) Drain primary circuit.
(b) Unscrew the compression connections at
inlet and outlet of the valve.
(c) Remove the automatic bypass valve.
(d) Replacement is a reversal of the above
procedure. Ensure all connections are
correctly made and tight.
9.3.7 Removing the Electric Boiler assembly
(see diagram 43, page 39)
(a) Drain primary circuit.
(b) Remove cover from over the electric boiler
control pcb.
(c) Disconnect cables from the terminal blocks
and pull back through cable entry bush.
(d) Unscrew electric boiler control housing
from right hand side panel.
(e) Unscrew the compression fitting from the
lower (return) pipe to the electric boiler.
(f) Disconnect the "Push Fit" connection
from the upper (flow) pipe from the electric
boiler.
(g) The electric boiler assembly can now
be removed. To aid removal lower the
assembly until the control housing is
approximately half way down the unit
and slightly flex the right hand side panel
outwards.
(h) Replacement is a reversal of the above
procedure. Ensure cables are routed into
the control housing through the cable entry
bush. Ensure all electrical connections are
correctly made (refer to wiring diagram
14, page 22) and tightened fully. Loose
terminations can overheat and cause a fire
hazard.
NOTE: Refer to main control PCB removal
(page 41, 9.3.10) to replace PCB onto new
boiler.
Automatic
Bypass
Valve
Primary
Flow
Primary
Return
Diagram 42 Auto By-pass Valve Removal
Lower Compression
Connection
Diagram 43 Electric Boiler Removal
Installation & Servicing Instructions
Off Peak
Immer-
sion
Upper "Push Fit"
Connection
Boiler Control
PCB Housing
Cable Entry
Bush
Boiler Control
PCB Cover
Electric
Boiler
Assembly
39