Vent-Axia HR25H Installation And Wiring Instructions page 12

25mm
Waste
Motor Housing
Wiring Slot
Wiring Tunnel
Chassis
12
Mounting Hole
(X)
(X)
Outer Tube
Chassis
Divider Board
(Y)
Inner Tube
Divider Board Slot
Wall Thickness
Fig. 39
Fig. 40
Waste
Fig. 41
Fig. 42
Heat Exchanger
Recess
3.0 Installation
Installing the HR25L, LH & LP (cont)
3.6
5. Measure the wall thickness and add 25mm.
This is dimension "X" (Fig. 39).
6. Mark off dimension "X" on the outer tube,
measuring from the rear of the chassis. Cut off
the excess material (Fig. 40).
7. Remove any burrs from the tube.
8. Measure the waste from the outer tube and cut
the same amount off the base of the divider
board (Fig. 40).
9. Replace the rubber seal 50mm in from the end
of the tube and secure using the adhesive
provided.
10. Refit the plastic ring using the adhesive
provided.
11. Subtract 1.5mm from dimension "X". This will
be dimension "Y".
12. Mark off dimension "Y" from the motor
housing end of the inner tube, and scribe a line
around the inner tube. Peel the two motor wires
away from the wiring tunnel beyond the scribed
line to prevent damage. Carefully cut the excess
off the tube (Fig. 41).
13. Remove any burrs from the tube.
14. Reassemble the tubes in reverse order
ensuring that the two motor wires are located
back in the wiring tunnel, and that the tunnel is
aligned with the wiring slot in the chassis
(Fig. 42).
15. Replace the heat exchanger according to the
'Inside/Outside' labels. The recess in the heat
exchanger outer must be aligned with the wiring
tunnel on the inner tube to ensure the divider slot
is vertical (Fig. 42 & 43).
16. Cut the two motor wires to size and reconnect
to their respective terminals and replace the
control cover (Refer to the relevant unit
instructions - see pages 8-12 ).
Continue installing the unit from paragraph 7
onwards in the relevant unit instructions - see
pages 8-12.
Fig. 43