Potterton Performa 28i, Installation And Servicing Instructions, Page: 19 / 48

8.0 Installation
19
8.1 Initial Preparation
The gas supply, gas type and pressure must
be checked for suitability before connection
(see Section 7.6).
1. After considering the site requirements
(see Section 7.0) position the fixing template
(Fig. 16) on the wall ensuring it is level both
horizontally and vertically.
2. Mark the position of the two most suitable
fixing slots for the wall plate and boiler lower
fixing holes. It is preferable to use the horizontal
fixing slots.
3. Mark the position of the centre of the flue hole
(rear exit). For side flue exit, mark as shown.
4. Note the shaded area on the template.
Pipework cannot be routed upwards behind
the boiler.
5. If required, mark the position of the gas and
water pipes. Remove the template.
6. Cut the hole for the flue (minimum diameter
107mm).
7. Drill the wall as previously marked to accept
the wall plugs supplied. Secure the wall plate
using the fixing screws.
8. Using a spirit level ensure that the plate is
level before finally tightening the screws.
9. Connect the gas and water pipes to the valves
on the wall plate using the copper tails supplied.
Ensure that the sealing washers are fitted
between the connections.
8.2 Flushing
1. Connect a tube to the central heating flow or
return pipe (Fig. 17).
2. Flush thoroughly (see System Details, Section
6.2).
3. The use of the optional Filling Loop Kit (Part
No. 248221) will simplify the flushing and
soundness checking.
8.3 Preparing The Boiler
1. Remove all packaging.
2. Stand the boiler on its base by using the rear
lower edge as a pivot.
NOTE: A small amount of water may drain
from the boiler when the plastic caps are
removed from the boiler connections.
Fig. 16
Fig. 17
FIXING
TEMPLATE
5 mm Minimum
Side Clearance
5 mm Minimum
Side Clearance
Horizontal Side Flue
Centre Line
107mm Dia Minimum
Aperture For Flue Tube
200 mm
Minimum
Clearance
200 mm
Minimum
Clearance
Profile of
Outercase
Vertical Flue
Centre Line
General
Area For
Electrical
Supply
Hot Water
Outlet
(15mm)
Cold Water
Inlet
(15mm)
Heating
Return
(22mm)
Heating
Flow
(22mm)
Pressure Relief
Valve
(15mm)
Gas
Inlet
(22mm)
95 mm 65 mm
Boiler Mounting Bracket Fixing Slots
Drill 8 mm diameter x 50 mm deep
65 mm 65 mm 65 mm
65 mm
Boiler Lower Fixing Holes
Drill 8 mm diameter x 50 mm deep
IMPORTANT
Pipework cannot be
rear routed upwards behind the boiler.
Keep pipework, electrical cables and clips clear of
all shaded areas to allow the correct fitting of the boiler
Performa 28i
Fixing Template
Appliance Wall Plate
190mm
For Side Flue Exit
Central Heating Return
Flushing Tube
Wall Plate
Filling Loop