Boiler Installation; Flue Installation - Saunier Duval THELIA 23 Installation And Operating Instructions Manual

Wall mounted boilers
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Statutory requirements
The installation of this boiler must be carried out
by a competent person in accordance with the
relevant requirements of the current issue of:
The Gas Safety (Installation and Use) Regulations
The Building Regulations
The local water company Byelaws
The Building Standards Regulations (Scotland)
The Health and Safety at Work Act
Sheet metal parts
WARNING. When installing or servicing this boiler,
care should be taken when handling the edges
of sheet metal parts to avoid the possibility of per-
sonal injury.
Diagram. 27
The boiler is supplied for rear outlet flue connec-
tion.
Alternatively, the boiler is designed to allow the
flue system to be connected to the top of the
boiler, top outlet flue connection.
For top outlet flue installation refer to "Top outlet
flue".
Rear outlet flue - Kit 104294
The rear outlet flue system consists of two parts, a
PVC outer pipe and an aluminium inner, they are
positively locked together when assembled.
The flue kit 104294, see diagram 29, is 750 mm long
and comprises :
18

BOILER INSTALLATION

Installing the boiler
Prior to starting work, the system must be thoroughly
flushed with a suitable cleaning agent so as to
eliminate any foreign bodies and contaminants
such as filings, weld particles, oil, grease etc.
NOTE : solvent products could cause damage to
the system.
Engage boiler upper part onto the retaining strip
(diagram 27).
Allow the boiler to seat down into position onto
the support plate (diagram 28).
Fit the filter and washers, strictly adhering to the
sequential order and directions shown on diagram
23. Connect the various couplings between the
boiler and connection plate.
Diagram. 28
REAR OUTLET FLUE ASSEMBLY
- Outer PVC pipe ................................................... A
- Inner aluminium pipe ........................................... B
- External rubber sealing collar ............................ C
- Rubber connecting sleeve ................................. D
- Flue elbow ............................................................. E
- Internal rubber flange .......................................... F
A - Direct rear outlet flue
Mark correct position of hole from template using
hole between hook and connecting plate.
B - Rear outlet side flue
Mark the horizontal centre line for the hole on the
rear wall. Extend the horizontal centre line to the
side wall and mark the vertical centre line of the
flue hole as shown in diagram 30.

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