VOKERA Mynute EHE Installation & Servicing Instructions Manual - page 19
17
6.16
FLUE FAN (fig. 25)
Carry out component removal procedure as described in 6.4.
Unclip and remove the air chamber cover, gently pull the
cover towards you before lifting and disengaging. Locate
and remove the six screws that secure the front combustion
cover, then remove the cover.
Disconnect the electrical connections and silicone tubes
attached to the fan, noting their positions. Locate and
remove the screws (6) that secure the air pressure switch
assembly (4&5). Locate and remove the screws that secure
the flue hood and air baffle, disconnect the flue clip (1) from
the fan-flue elbow and gently ease the fan (3) & flue hood
assembly (2) from its location. Locate and remove the four
screws that secure the fan to the flue hood. Remove the fan
to flue elbow. Replace in the reverse order. Ensure all seals
are in good condition, taking care to ensure they are
replaced correctly.
6.17
HEAT EXCHANGER fig. 25/26
Carry out component removal procedure as described in
6.4. Unclip and remove the air chamber cover, gently pull
the cover towards you before lifting and disengaging.
Locate and remove the six screws that secure the front
combustion cover, then remove the cover. Remove the air
chamber side panels if necessary by unscrewing the
securing screws. Disconnect the flow and return connec-
tions (4,5, fig. 26) on the heat exchanger. The heat ex-
changer can now be withdrawn from the appliance. Re-
place in the reverse order. Ensure all seals are in good
condition, taking care to ensure they are replaced correctly.
6.18
AIR PRESSURE SWITCH (fig. 25)
Carry out component removal procedure as described in
6.4.
Unclip and remove the air chamber cover, gently pull
the cover towards you before lifting and disengaging.
Locate and remove the two screws (6) holding the air
pressure switch to the air chamber. Disconnect the electri-
cal connections and silicone tubes (10) attached to the air
pressure switch, noting their connections/positions. Re-
place in the reverse order. Ensure all seals are in good
condition, taking care to ensure they are replaced correctly.
6.19
AUTOMATIC BY-PASS (fig. 27)
Carry out component removal procedure as described in
6.4. Locate and remove the hydraulic cover locking pin (A)
and remove the cover. Using a suitable hooked wire or
screwdriver, gently ease the valve cartridge from its seat-
ing. Ensure all seals are in good condition, taking care to
ensure they are replaced correctly. Replace in the reverse
order ensuring the cartridge is facing the correct way.
6.20
EXPANSION VESSEL fig. 1
Should the removal and replacement of the expansion
vessel be deemed impractical, an external expansion
vessel may be fitted to the return pipe as close to the
appliance as possible.
6
1
3
2
4
5
10
Fig. 25
Fig. 23
Fig. 24
Fig. 26
Fig. 27
A