PCH cold storage generator module
APEN GROUP SPA reserves the right to contribute the necessary modifications to the documentation or documentation
20
cod. HG0130.05GB ed.B-2104
PCH
21
cod. HG0130.05GB ed.B-2104
PCH
HG0130.00 A
017
HG0130.00 A 016
4.2. Installing the Module
In order to install a PCH heater into an air handling or roof-top
unit, we recommend to prepare four support guides similar to
those shown in the adjacent picture, or to make sure that the
heater, located inside the housing, is placed and locked safely
in place to prevent its movement and/or damage during the
transport.
These guides/supports can also be totally or partially closed to
reduce pressure drops, depending on air flow.
With high air flow rates, in order to avoid great pressure drops, the
system designer must provide the system with a bypass section.
THIS section can be calculated by following the instructions
provided in paragraph 4.3 "Bypass calculation" or by using a
calculation software supplied on request by APEN GROUP.
Precautions to be taken for surrounding areas
An STB safety thermostat is fitted in the PCH heater, together
with a temperature control probe, installed on the heat exchanger
centreline.
The thermostat may be accessed from the outside through
the burner housing during maintenance and/or replacement
operations.
All components belonging to the air handling or roof-top
units where the PCH heater will be located (fans, filters, drop
separators, etc.):
•
if made of plastic, they must be installed at a distance of
least 1 m, with an access grille between them
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NOTE: The plastic used must be of V0 UL94 type (flame
retardant)
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•
if made of metal, they must be fitted at a distance of at least
500 mm without grille.
The distance is required to protect the filter in the event of a power
failure, and therefore ventilation when the heat exchanger is hot.
Metal fibre filter or fibreglass filter should be used (Tmax
100-120°C).
If the fan motor and/or an inverter is located very close to the
PCH heater module (less than 400 mm) a metal guard must be
used to protect and shield the electrical components.
IT
is prohibited to install any type of flammable material near
the PCH heater.
Example of a PCH heater installation inside an air han-
dling unit: four guides aid the installation of the PCH
heater inside the unit.
Filter minimum distance
500 mm (metal)
1000 mm (plastic V0)
Air flow direction
Air flow direction
Empty area for
maintenance
Motor protection guard
