Robur K18 Simplygas, Installation, Use And Maintenance Manual

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Heating engineer
28
3
3.10 FUEL GAS SUPPLY
3.10.1
Gas connection
▶
1/2" M
on the left, at the bottom, connection plate (Figure 1.3 p. 10).
It is possible to reduce gas pipe diameter to 3/8", en-
suring enough gas pressure to the appliance (see Table
3.3 p. 28), considering pressure losses of entire gas
supply pipe.
▶
Install an anti-vibration connection between the appliance
and the gas piping.
3.10.2
Mandatory shut-off valve
▶
Provide a gas shut-off valve (manual) on the gas supply line,
next to the appliance, to isolate it when required.
▶
Perform connection in compliance with applicable regula-
tions.
3.10.3 Gas pipes sizing
The gas pipes must not cause excessive pressure drops and, con-
sequently, insufficient gas pressure for the appliance.
3.10.4 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 3.3
p. 28, with tolerance ± 15%.
Non compliant gas pressure (Table 3.3 p. 28) may
damage the appliance and be hazardous.
Table 3.3
Network gas pressure
Gas supply pressure
Product category Countries of destination
G20
[mbar]
G25
[mbar]
G30
[mbar]
G31
[mbar]
II
2H3B/P
AL, BG, CY, CZ, DK, EE, FI, GR, HR, IT, LT, MK, NO, RO, SE, SI, SK, TR 20 30 30
AT, CH 20 50 50
II
2H3P
AL, BG, CZ, ES, GB, HR, IE, IT, LT, MK, PT, SI, SK, TR 20 37
RO 20 30
II
2ELL3B/P
DE 20 20 50 50
II
2Esi3P
FR 20 25 37
II
2HS3B/P
HU 25 30 30
II
2E3P
LU 20 50
II
2L3B/P
NL 25 50 50
II
2E3B/P
PL 20 37 37
I
2E(S)
BE 20 25
I
3P
BE 37
IS 30
I
2H
LV 20
I
3B/P
MT
30 30
I
3B
30
3.10.5
Vertical pipes and condensate
▶
Vertical gas pipes must be fitted with siphon and discharge
of the condensate that may form inside the pipe.
▶
If necessary, insulate the piping.
3.10.6
LPG pressure reducers
With LPG the following must be installed:
▶
A first stage pressure reducer, close to the liquid gas tank.
▶
A second stage pressure reducer, close to the appliance.
3.11 COMBUSTION PRODUCTS EXHAUST
Compliance with standards
The appliance is approved for connection to a combus-
tion products exhaust duct for the types shown in Table
1.2 p. 17.
3.11.1 Flue gas exhaust connection
▶
Ø 80 mm (with gasket), on the rear, at the top (Figure
1.3
p. 10).
The appliance is supplied with flue gas exhaust kit, to be fitted
by the installer.
How to install the flue gas exhaust kit
1. Remove the cover applied to the flue gas exhaust.
2. Fit the terminal onto the collar on the flue gas exhaust.
The cover prevents water and/or foreign bodies en-
tering the appliance before the exhaust kit is installed.
The cover should thus be removed only when actually
installing the exhaust kit on the appliance.
3.11.2
Possible flue
The fumes exhaust may be wall-mounted , but it can also be easi-
ly conveyed over the ridge of the roof because the residual head
allows the ducts to be extended by some tens meters, if the local
regulations require this.
Table 3.4
p. 29 below shows the characteristics of the combus-
tion products of the K18 Simplygas unit.