ROBUA G Series, Installation, Use And Maintenance Manual

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Heating engineer
18
3
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 fitted with siphon and dis-
charge 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 first stage pressure reducer, close to the liquid gas
tank.
▶
A second stage pressure reducer, close to the appli-
ance.
3.3 COMBUSTION PRODUCTS EXHAUST
Compliance with standards
The appliance is approved for connection to a
combustion products exhaust duct for the types
shown in Table 1.2 p. 13.
3.3.1 Flue gas exhaust connection
▶
Ø 80 mm with gasket, on the rear, at the top (see di-
mensional diagrams, Paragraph 1.2 p. 8).
3.3.2
Combustion air intake fitting
▶
Ø 80 mm with gasket, on the rear, at the top (see di-
mensional diagrams, Paragraph 1.2 p. 8).
3.3.3 Installation types
The lengths in following Tables are intended for
installations where the air and/or flue gas exhaust
ducts follow linear paths as shown in the respec-
tive Figures. Otherwise, you must proceed with
the calculation of the pressure drop (Paragraph
3.3.4 p. 20).
If ducts other than those supplied by the manufac-
turer are used, make sure that they are suitable for
the unit on which they are installed. In particular,
the temperature class of the duct must be appro-
priate for the operating characteristics of the unit,
and must also respect the chemical-physical sta-
bility of the system itself.
The material used for the flue gas exhaust duct must
be class W1 according to EN 1443 and therefore
suitable to withstand the action of condensate of
combustion products from gaseous fuels.
In any case, use approved ducts according to the
type of installation to be made. Upon request,
Robur can supply rigid pipes, coaxial ducts and ter-
minals, all of approved type.
Gas unit heaters of the G series can be installed to one of
the following ways.
3.3.3.1 B23 type installation with wall flue gas exhaust
pipe
Figure 3.1
B23 type installation with wall flue gas exhaust pipe
A View from above
A
Table 3.2
B23 type maximum allowed length
Indicative maximum lengths (m)
Flue gas exhaust pipe
Ø 80 Ø 100 Ø 110
G30 23 30 30
G45 16 30 30
G60 12 30 30
G100 8 28 30