ROBUA GAHP A Series, Installation, Use And Maintenance Manual

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Heating engineer
Installation, use and maintenance manual – GAHP A
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3
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.
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.
3.10
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
1.1 p. 16.
Flue gas exhaust connection
▶
Ø 80 mm (with gasket), on the left, at the top (Figure
3.2 p. 23).
Flue gas exhaust kit
The appliance is supplied with flue gas exhaust kit, to be fitted
by the installer, including (Figure 3.2 p. 23):
▶
1 pipe Ø 80 mm, length 300 mm, with terminal and socket
for flue gas analysis;
▶
1 support collar;
▶
1 90° elbow Ø 80 mm;
▶
1 rain cover.
Figure 3�2 Fume outlet
A 90° elbow Ø 80
B Pipe Ø 80 Lg.300 mm w/terminal
C Rain cover
D Collar
How to install the flue gas kit
Figure 3.2 p. 23:
1� Remove the front panel;
2� Fasten the collar (D) with its spacer to the left side
panel of the appliance;
3� Fit the terminal/pipe assembly (B) to the elbow (A).
4� Fit the rain cover (C) onto the elbow (A);
5� Remove the protection cover;
6� Insert the elbow/terminal/pipe assembly into the
flue gas exhaust;
7� Fit the assembly closing the collar (D) and place the
rain cover;
8� Fit the front panel back on.
The cap prevents water and foreign bodies entering
the appliance before the fumes kit is installed. The cap
should thus be removed only when the kit itself has
been fully assembled and installed.
Possible flue
If necessary, the appliance may be connected to a flue.
▶
To size the flue refer to Table 1.1 p. 16 and Design Manual.
▶
If several appliances are connected to a single flue, it is oblig-
atory to install a check valve on the exhaust of each.
▶
The flue must be designed, sized, tested and constructed by
a skilled form, with materials and components complying
with the regulations in force in the country of installation.
▶
Always provide a socket for flue gas analysis, in an accessible
position.
3.11 FLUE GAS CONDENSATE DISCHARGE
The GAHP A unit is a condensing appliance and therefore pro-
duces condensation water from combustion flue gases.
Condensate acidity and exhaust regulations
The flue gas condensate contains aggressive acid sub-
stances. Refer to applicable regulations in force for con-
densate exhaust and disposal.
„
If required, install an acidity neutraliser of adequate
capacity.
Do not use gutters to discharge the condensate
Do not discharge the fume condensate in gutters, due to
the risk of materials corrosion and ice formation.
Flue gas condensate connection
The fitting for flue gas condensate discharge is located on the
left side of the appliance (Figure 3.3
p. 24).
▶
The distance L between the sleeve and the base must not
exceed 110 mm.
▶
The corrugated condensate discharge pipe must be con-
nected to a suitable discharge manifold.
▶
The junction between the pipe and the manifold must re-
main visible.
Flue gas condensate discharge manifold
To make the condensate discharge manifold:
▶
Size the ducts for maximum condensation capacity (Table
1.1 p. 16).
▶
Use plastic materials resistant to acidity pH 3-5.
▶
Provide for min. 1% slope, i.e. 1 cm for each m of the length
(otherwise a booster pump is required).
▶
Prevent icing.