Robur Supercromo - 3.3.1 Gas Connection; 3.3.2 Mandatory Shut-off Valve; 3.3.4 Supply Gas Pressure

Heating engineer
Installation, use and maintenance manual – Supercromo
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Figure3.1 Gas and power supply position
A Hole for power supply cable
B Terminal block
C Hole for gas pipe
D Cable gland bridge
A
B
C
D
The connection to the gas mains must be made
using a rigid copper or steel pipe and ttings; alter-
natively, a exible stainless steel pipe conforming
to the regulations in force may also be used.
The connection to the gas pipe must be properly
sealed to ensure tightness using a sealant that
complies with EN 751-1 and EN 751-2. The connec-
tion must be made in such a way that no strain is
produced in the pipe or gas-red convector com-
ponents.
3.3.2 Mandatory shut-o valve
▶ Provide a gas shut-o valve (manual) on the gas supply
line, next to the appliance, to isolate it when required.
▶ Provide a three-piece pipe union.
▶ Perform connection in compliance with applicable
regulations.
3.3.3 Gas pipes sizing
The gas pipes must not cause excessive pressure drops
and, consequently, insucient gas pressure for the
appliance.
3.3.4 Supply gas pressure
This appliance is equipped for a maximum gas
supply pressure of 50 mbar.
The appliance's gas supply pressure, both static and dy-
namic, must comply with Table 3.1 p.11 , with tolerance
± 15%.
Non compliant gas pressure (Table 3.1 p. 11 )
may damage the appliance and be hazardous.
Table3.1 Network gas pressure
Gas supply pressure [mbar]
Product category Countries of destination G20 G25 G30 G31 G30 G31
II
2H3B/P
AT, BG, CZ, DK, EE, FI, HR, LT, LV, MK, RO, SE, SI, SK,
TR
20 30 30
AT 20 50 50
II
2H3P
BG, EE, HR, LT, SI, SK 20 37
II
2H3+
CZ, ES, GB, GR, IE, IT, PT, SK 20 28-30 37
II
2Esi3+
FR 20 25 28-30 37
I
3+
FR, BE 28-30 37
II
2H3B/P
HU 25 30 30
II
2E3B/P
LU 20 50
PL 20 37 37
DE 20 50 50
I
2H
LV 20
The appliance gas supply pressure, both static and dynamic, must comply with the values in the Table, with a tolerance of ± 15%.