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6.7
Water system treatment
When filling and restoring the system it is good practice to use
water with:
– aspect: clear if possible
– Ph: 6÷8
– hardness: < 25°f.
If the water characteristics are different from those indicated, it
is recommended that a safety filter is used on the water deliv-
ery pipe to retain impurities, and a chemical treatment system
to protect against possible deposits and corrosion which could
affect boiler operation.
If the systems are only low temperature systems, it is recom-
mended that a product is used to prevent the development of
bacteria.
In any case, please refer to and comply with the legislation and
specific technical standards in force in the country where the ap-
pliance will be used.
6.8
Boiler installation
MURELLE.HT
boilers leave the factory with a paper template for
installation onto a solid wall.
For installation:
– position the paper template (1) on the wall (2) where the boiler
is to be mounted
– make the holes and insert the expansion plugs (3)
– hook the boiler onto the plugs.
1
2
3
Fig. 35
m
CAUTION
The height of the boiler is to be such that disassembly
and maintenance interventions are facilitated.
6.9
Plumbing connections
The plumbing connections have the following characteristics and
dimensions.
65 65 65 65
=
=
52
450
M
Sc
U G E R
182,5
115
Sc
Fig. 36
Description
MURELLE.HT
25
30
35
M - System delivery
Ø 3/4" G
R - System return
Ø 3/4" G
U - Domestic hot water output
Ø 1/2" G
E - Domestic hot water inlet
Ø 1/2" G
G - Gas supply
Ø 3/4" G
Sc - Condensate outlet
Ø 20 mm
6.9.1
Plumbing accessories (optional)
To facilitate plumbing and gas connections to the systems, the
accessories as shown in the table below are available and are to
be ordered separately from the boiler.
DESCRIPTION
CODE
Assembly template
8081221
Lower template element (50 pieces)
8075437
Curve kit
8075418
Curve and valve kit with connections from DIN to
SIME
8075443
Cocks kit
8091806
Valve kit with connections from DIN to SIME
8075442
Wall mount replacement kit for other makers
8093900
Polyphosphate dosing kit
8101700
Dosing recharge kit
8101710
Solar kit for instant combination boilers
8105101
Condensate pump kit
8105302
Compact dirt separator
8101750
Anti-freeze heaters kit (–15°C)
8089816
Concen one wireless room probe kit
8094121
Contact sensor downstream of the compensator
6277122
Band mix valve
8082269
Wireless room sensor
8094110
NOTE:
kit instructions are supplied with the accessory itself or
are to be found on the packaging.