Hoval RoofVent CON-9, Design Handbook

Page: 170 / 280

168
7 Transport and installation
7.1 Assembly
Caution
Risk of injury as a result of incorrect handling. Have
transport and assembly work carried out by trained
specialists !
RoofVent
®
condens units are delivered on wooden pallets in
three sections: roof unit, below-roof unit, 1 box with acces-
sories for the conduit. Parts which belong together bear the
same unit number.
Note
Depending on the optional components, the delivery
may consist of multiple parts (such as when a supply
air silencer is installed). In this case a forklift truck or
a crane is required for assembling the below-roof unit
on site.
The following guidelines are important when preparing for
assembly:
■ The units are assembled from roof level. A crane or heli-
copter is required.
■ Two slings are required for transport to the roof (sling
length approx. 6 m). If steel cables or chains are used, the
unit corners must be properly protected.
■ Check that the roof frames correspond to the information
in Part M 'System design.'
■ Define the desired orientation of the units.
■ The units are held in the roof frame by means of their own
weight. Silicone, PU foam or similar is required for sealing.
■ For units with exhaust air silencers, additional attachment
to the roof frame is required.
■ Follow the assembly instructions included.
Fig. G5: RoofVent
®
roof
units are installed from
roof level.
7.2 Hydraulic installation
Caution
Risk of injury as a result of incorrect handling.
Hydraulic installation must be carried out by trained
specialists only !
In RoofVent
®
condens units, the complete heating circuit is
already integrated. The following installation work must be
carried out:
■ Connect flow and return pipes of the below-roof unit to the
heat generation assembly.
■ Fill the heating circuit with the heat accumulator fluid
supplied:
– Filling quantity ......... approx. 25 l
– System pressure ..... 2 bar at 20 °C
■ The condensate of the gas boiler flows through the
neutraliser to the condensate drain connection at the
underside of the heat generation assembly. To avoid
icing up, connect a condensate drain pipe and route this
directly through the roof into the building. Insulate the
outdoor part of the drain pipe (min. 25 mm thick).
– Plug connection ...... DN 40
7.3 Gas connection
Caution
Risk of injury as a result of incorrect handling. Gas
connection must be carried out by trained specialists !
Please note the following:
■ An opening is provided for the gas pipe on the underside
of the heat generation assembly (see Fig. G6).
■ Connect the gas pipe in accordance with the applicable
regulations:
– Connection .............. R ¾" (male)
■ Install a gas shut-off cock directly before the boiler.
Fig. G6: Opening for the
gas pipe and condensate
drain connection
RoofVent
®
condens
Transport and installation