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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
M
U
G
E
420
Description
M - System delivery
R - System return
U - Domestic hot water output
E - Domestic hot water inlet
G - Gas supply
A (mm)
62
=
A
R
Fig. 27
GO BF
18
25
Ø 3/4" G
Ø 3/4" G
Ø 1/2" G
Ø 1/2" G
Ø 3/4" G
101
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
Installation plate
Curve kit
Curve and valve kit with
connections from DIN to SIME
Cocks kit
Valve kit with connections from
DIN to SIME
Wall mount replacement kit for
other makers
Polyphosphate dosing kit
Dosing recharge kit
kit instructions are supplied with the accessory itself or
NOTE:
are to be found on the packaging.
6.10
Gas supply
boilers leave the factory specifically prearranged for
GO BF
G20 but can be converted to function with G30/G31 using the
"specific nozzle kit" (optional) provided by Sime on request
separately from the boiler.
If changing the type of gas to be used, carry out the entire "GAS
phase of the appliance.
CONVERSION"
The boiler must be connected to the gas mains in full compliance
with the installation standards in force in the country where the
appliance will be used.
Before connecting the boiler to the gas mains, the user must
ensure that:
– the type of gas is correct for the appliance
– the pipes are clean
– the gas supply pipe is the same size as or larger than the
boiler fitting (G 3/4"), which guarantees the minimum dynamic
pressure shown in section "Checks and adjustments".
a
WARNING
30
Once installation has been completed, check that
the joints are air tight as indicated in the installation
Standards.
m
CAUTION
It is recommended that the gas line has a suitable
filter.
m
CAUTION
If the gas supply is changed from G20 to G30 or G31,
mark the box on the TECHNICAL DATA PLATE.
G30 - 30 mbar
Or:
G31 - 37 mbar
EN
CODE
8075448
8075428
8075443
8091806
8075442
8093900
8101700
8101710
X
X
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