Balanced Flue Instructions

24
5C. Top Exit – Vertical Flue
(Midi & Medium only)
5.43 Where a vertical only flue system has been purchased, refer
to Installation & Instructions, Site Requirements, Section 3D.
5.44 Pay careful attention to the following:
Terminal positions
Flue supports
Weatherproofing
Fire precautions
5.45 Local and national codes of practice must be followed for all
the above.
5.46 A restrictor must be fitted with vertical flues. See
Technical Specification on page 12 for restrictor sizes.
PLEASE NOTE: When installing the appliance in
conjunction with a vertical termination kit, there is a
unique kit for use with this appliance (Gazco Part No.
999-539). This kit differs in that it has restrictors with
sliding plates. Please ensure you have the correct kit
before proceeding with the installation.
5.47 It is important that the sliding restrictor assembly is used.
The restrictor assembly must be fitted with the slide collars
uppermost and the top restrictor plate must be checked to
ensure it moves freely before the flue is fitted.
Restrictor assembly
Slide collars
13
5.48 Flue Lengths over 5m (Midi Top Exit)
and Flue Lengths over 6m (Medium NG)
In the instance where the flue pipe meets the above criteria
a 40mm ø restrictor must be fitted. This restrictor can be
found in the appliance packing kit supplied.
Installation Instructions
5.49 To fit the restrictor undo the bolts on the slide collars on the
restrictor assembly, see Diagram 14.
Restrictor
plate
Screws
14
5.50 Remove the restrictor plate that is current in place and fit the
40mm Ø one from the kit.
Secure with the screws and ensure that the plate moves
freely up and down on the slide collars.
5.51 Fit the restrictor assembly as previous described.
6. Gas Soundness Pressure Check
This is essential to expel any debris that may block the gas
controls.
6.1 Connect the gas to the 8mm elbow on the rear of the
appliance, see Diagram 15.
15
6.2 Connect a suitable pressure gauge to the test point located
on the inlet fitting and turn the gas supply on. Light the
appliance and check all gas joints for possible leaks. Turn
the appliance to maximum and check that the supply
pressure is as stated on the databadge. Turn the gas off
and replace the test point screw, turn the gas on and check
the test point for leaks.