capriz 25 capriz 28 - Heatline

19.17 Safety Thermostats
Remove the front panel, combustion chamber
cover and right side panel.
Locate the overheat safety thermostats at the
front left handside of the boiler and ontheright
handside of the primary heat exchanger
(Figures 54a& b)
Disconnect the electrical connections from
the thermostat.
LIMIT SAFETY
THERMOSTAT
PRESSURE
SAFETY RELIEF
VALVE
UNSCREW
TO REMOVE
Figure 54a
DISCHARGE
PIPE
R.H. HYDRAULIC
BLOCK
Figure 55
ELECTRICAL
CONNECTIONS
19.19 Hydroblock
PIPE CLIP
Drain the boiler’s hydraulic circuit as detailed in
(19.2).
Remove the secondary heat exchanger as
described in (19.12)
30
Remove the pump assembly as described in
(19.10)
PRIMARY
HEAT
EXCHANGER
OVERHEAT SAFETY
THERMOSTAT
Unclip the thermostat from the pipe.
Figure 54b
Fit the replacement thermostat in reverse
order of removal.
Remove the section of the hydroblock from the
pump by releasing the clip.
Release the exchanger outlet pipe nut and
rotate the pipe for easy removal of the left
section of the hydroblock as described in
section (19.13)
Disconnect the three way valve motor, electrical
connection and remove the motor by releasing the
clip as described in section (19.22)
Release the nut connecting the CH outlet connection
to the hydroblock. (Figure 56).
19.18 Pressure relief valve (Figure 55).
Drain the boiler’s hydraulic circuit as detailed in
(19.2).
Disconnect the discharge pipe on the outlet of the
safety valve.
Remove the safety valve from the hydraulic block
and retain the o-ring for use on reassembly,
replace as necessary.
Figure 56
Fit the replacement safety valve in reverse order
to removal and refill, vent and pressurise boiler
ensuring all joints are sound.
ELECTRICAL
CONNECTIONS
DOMESTIC HOT
WATER SENSOR
Page 30