Robur Next-R, Instructions For Installation, Use And Maintenance Manual

Page: 23 / 52

Heating engineer
Installation, use and maintenance manual – Next-R
23
3
„ gas systems
„
fl ue gas exhaust
„
fl ue gas condensate discharge
Installation must also comply with the manufacturer's
provisions.
3.2 FUEL GAS SUPPLY
3.2.1
Gas connection
▶
3/4" M (R15, R20, R30, R40, R50 models)
▶
3/4" F (R60, R80 models)
on the rear, to the left (see dimensional diagrams, Paragraph
1.2
p. 8).
▶
Install an anti-vibration connection between the appliance
and the gas piping.
3.2.2 Mandatory shut-o ff valve
▶
Provide a gas shut-o ff 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 regula-
tions.
3.2.3
Gas pipes sizing
The gas pipes must not cause excessive pressure drops and, con-
sequently, insu ffi cient gas pressure for the appliance.
3.2.4
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 dynamic,
must comply with Table 3.1 p. 23, with tolerance ± 15%.
Non compliant gas pressure (Table 3.1 p. 23) may
damage the appliance and be hazardous.
Table 3.1 Gas network pressure
Gas supply pressure [mbar]
Product
category
Countries of destination G20 G25 G25.1 G25.3 G2.350 G27 G30 G31
II
2H3B/P
AL, BG, CH, CY, CZ, DK, EE, FI, GR, HR, IT, LT, LV,
MK, NO, RO, SE, SI, SK, TR
20 30 30
AT, CH 20 50 50
II
2H3P
AL, BG, CH, CZ, ES, GB, GR, HR, IE, IT, LT, LV, MK,
PT, SI, SK, TR
20 37
RO 20 30
AT 20 50
II
2ELL3B/P
DE 20 20 50 50
II
2Esi3P
FR
20 25 37
II
2Er3P
20 25 37
II
2H3B/P
HU
25 30 30
II
2HS3B/P
25 25 30 30
II
2E3P
LU 20 50
II
2L3B/P
NL
25 30 30
II
2L3P
25 37
II
2EK3B/P
20 25 30 30
II
2EK3P
20 25 30
II
2E3B/P
PL
20 37 37
I
2E
20
II
2ELwLs3B/P
20 13 20 37 37
II
2ELwLs3P
20 13 20 37
I
2E(R)
BE
20 25
I
2E(S)
20 25
I
3P
37
I
3P
IS 30
I
2H
LV 20
I
3B/P
MT
30 30
I
3B
30
The appliance gas supply pressure, both static and dynamic, must comply with the values in the Table, with a tolerance of ± 15%.
3.2.5
Vertical pipes and condensate
▶
Vertical gas pipes must be fi tted with siphon and discharge
of the condensate that may form inside the pipe.
▶
If necessary, insulate the piping.
3.2.6
LPG pressure reducers
With LPG the following must be installed:
▶
A fi rst stage pressure reducer, close to the liquid gas tank.
▶
A second stage pressure reducer, close to the appliance.
3.3 COMBUSTION PRODUCTS EXHAUST
Compliance with standards
The appliance is approved for connection to a