460
8.0 Installation
18
8.1
Initial Preparation
The gas supply, gas type and pressure must be
checked for suitability before connection (see
Section 7.6).
1. Mark the centre of the flue hole as shown (Figs.
21 & 22). If required, mark the position of the gas
and water pipes (see Section 5.0).
2. Cut the hole for the flue (minimum diameter
107mm).
3. Ensure that the floor or base on to which the
boiler is to be fitted is clean and free from debris.
4. Install all pipework that will be behind the boiler,
including the pressure relief discharge pipe (see
section 6.7) and components and pipework of the
domestic hot water Unvented Kit.
8.2
Flushing
1. Connect a tube to the central heating flow or
return pipe.
2. Flush thoroughly (see Section 6.2 of System
Details).
3. The Baxi Combi filling loop kit can be used to
flush the system.
IMPORTANT:
Do not use any safety valves to
flush or drain the system.
A
B
560
95
205
560
560
Left Hand
Side Flue
X
= Dimension
dependent
upon individual installation
circumstances
Rear Flue
65
X
View From Rear
A
= Concentric Adaptor/
Twin Flue Duct
B
= Twin Flue
Air Duct
Profile of Outercase
Top
Fig. 21
Fig. 22
