Potterton Promax System HE Plus LPG Installation & Service Instructions Manual page 21

Blanking Plate
© Baxi Heating UK Ltd 2008
Flue Duct Adaptor
Inlet Adaptor
Gasket
Restrictor
Gasket
8.0 Flue Options
For Twin Flue Systems fit the adaptors as follows:-
8.4 Flue Duct Adaptor
1. Engage the flue duct adaptor on the boiler flue adaptor,
making sure that it is pushed down as far as possible.
8.5 Air duct adaptor
1. Undo the screws securing the blanking plate to the boiler
top panel. Discard the plate.
2. There are three restrictor plates supplied in the kit. One
marked '23', one marked '27' and a third unmarked. The
unmarked one must be used with this 24kW boiler. Discard
the other two. Position the unmarked restrictor as shown
below.
3. Take one of the gaskets supplied in the kit and place on
the boiler top panel.
4. Align the restrictor as shown. Position the second gasket
over the restrictor.
5. Using the screws previously removed secure the inlet
adaptor to the top panel.
6. Continue to fit the twin flue system.
Position of Restrictor
24 kW model
21