Table of Contents
Advertisement
Fig. 30
6.17 FLOW RESTRICTOR (fig. 31)
Carry out the component removal procedure as described in 6.4.
Disconnect the cold water inlet pipe at the DHW flow meter (A). Us-
ing a small screwdriver, gently ease the flow restrictor (B) from its
seating. Replace in the reverse order. Ensure all seals are in good
condition, taking care to ensure they are replaced correctly.
6.18 DHW FLOW METER (fig. 31)
Carry out component removal procedure as described in 6.4.
Remove the locking pin (C). Disconnect and remove the cold water
inlet pipe from the DHW flow meter & DHW heat exchanger. Discon-
nect the wiring to the DHW flow meter. Lacken and unscrew the inlet
connection (cold water inlet stopcock, fig. 14). Unscrew the nut (D).
Lift the DHW flow meter housing from its seating. If necessary remove
the locking pin (E) from the DHW flow meter, taking care not to lose
the float contained within the housing.
It is possible to clean internally the flow meter removing the locking
pin.
Replace in the reverse order ensuring that the housing is firmly in-
serted onto its seating. Ensure all seals are in good condition, taking
care to ensure they are replaced correctly.
C
Fig. 31
6.19 DHW HEAT EXCHANGER (fig. 22)
Carry out component removal procedure as described in 6.4. Lo-
cate and remove the screws (G) that secure the heat exchanger to
the DHW manifolds. Carefully remove the heat exchanger from its
location taking care not to spill any residual water. Replace in the
reverse order ensuring that the heat exchanger 'O' ring seals are
correctly inserted into the DHW manifolds. Ensure all seals are in
good condition, taking care to ensure they are replaced correctly.
6.20 VALVE ACTUATOR (fig. 32)
Carry out component removal procedure as described in 6.4.
Remove the locking pin (F) that secures the actuator (G) to the
heating manifold. Disconnect the electrical plug from the actuator.
Replace in the reverse order.
A
B
A
B
E
D
6.21 DIVERTOR VALVE ASSEMBLY (fig. 32)
Carry out component removal procedure as described in 6.4. Remo-
ve the valve actuator as described in 6.20. Locate and remove the
locking pin (A) that secures the valve housing cover to the hydraulic
F
Fig. 32
manifold. Gently prise the valve assembly from the manifold. Replace
in the reverse order ensuring that the seating assembly is inserted
properly. Ensure all seals are in good condition, taking care to ensure
they are replaced correctly
6.22 DHW THERMISTOR (fig. 33)
Carry out component removal procedure as described in 6.4.
Locate and remove the thermistor locking pin (H). Gently ease the
thermistor assembly (I) from the hydraulic manifold. Replace in the
reverse order.
6.23 AUTOMATIC BY-PASS & DHW NON-RETURN VALVE
(fig. 33)
Carry out component removal procedure as described in 6.4.
Remove the locking pin (A) that secures the cover (B) to the hydraulic
manifold. Using a hooked piece of wire, carefully withdraw the by-
pass cartridge (C) and/or DHW non-return cartridge (D). Ensure all
seals are in good condition, taking care to ensure they are replaced
correctly. Replace in the reverse order ensuring the cartridge is fac-
ing the correct way.
C
Fig. 33
A
.
A
I
H
D
B
G
21
Advertisement
Table of Contents
