PCH cold storage generator module
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26
cod. HG0130.05GB ed.B-2104
PCH
27
cod. HG0130.05GB ed.B-2104
PCH
PCHXX0-0FV0
HG0130.00 A
061
PCHXX0-0F00
HG0130.00 A 060
PCHXX0
HG0130.00 A 028b
PCHXX0-00V0
HG0130.00 A
027b
Flue gas data
The table to be used to calculate the flue gas exhaust system
with commercially available pipes can be found in paragraph
4.9 "GAS connection" within the Gas regulation data.
The maximum permitted recirculation percentage is 10%.
Selection Guide
The tables below show the pressure drop for Ø 80 and Ø 100
terminals and exhaust ducting.
If the terminal is not directly connected to the heater and,
therefore, extra routing is required, according to the length of
the ducting, the diameter of the selected terminals, extensions
and bends must be checked.
After establishing the routing, the pressure drop must be
calculated for each component by referring to the table below
according to the PCH module used; each component has a
different pressure drop value as the gas flow rate is different.
Then the pressure drops of each component identified must
be added, checking that the result is not higher than the value
available for the PCH heater module used; if a combustion air
supply pipe is fitted, losses must be added to the flue pressure
drops.
If the sum of pressure drops caused by the fittings is higher
than the pressure available at the exhaust, ducts with greater
diameter must be used, rechecking the calculation; a pressure
drop higher than the pressure available at the flue reduces the
heater module thermal output.
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NOTE: If the module is installed indoor:
- the use of coaxial connections is allowed for PCH heaters
with a maximum length of 3 metres;
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NOTE: The flue outlet terminal must be installed in
compliance with reference national regulation requirements,
always avoiding flue gas recirculation.
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If the duct routing requires the use of bends, the length of the
bends must be subtracted from the available length:
•
Ø 80 wide radius bend at 90°
EqL = 1.65m;
•
Ø 80 wide radius bend at 45°
EqL = 0.80m;
•
Ø 100 wide radius bend at 90° EqL = 2.30m;
•
Ø 100 wide radius bend at 45° EqL = 1.03m;
•
Ø 130 wide radius bend at 90° EqL = 2.20m;
•
Ø 130 wide radius bend at 45° EqL = 1.00m.
Terminal configuration
B23P type
Open combustion circuit: gases produced by the combustion are
discharged outside, on a wall or on the roof, and the combustion
air is directly drawn from the site where the equipment is installed.
In this case, standards UNI-CIG 7129 and UNI-CIG 7131 require
the provision of suitable vents on the walls.
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NOTE: IT
is compulsory to fit an IP20 safety mesh to prevent
solids with a diameter higher than 12mm from passing
through the combustion air intake. The mesh size must
be lower than 8mm.
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Type C13
Sealed combustion circuit (type "C") connected to a horizontal
terminal on the wall by means of its own ducts.
Type C33
Sealed combustion circuit (type "C") connected to a vertically
installed terminal (on the roof) by means of its own ducts.
Type C53
Sealed combustion circuit (type "C") connected by means of
its own separate ducts to two terminals which can end up in
areas with different pressure (such as a duct connected to the
roof and a second one connected to the wall).
Type C63
Sealed combustion circuit (type "C") connected to an approved
and separately sold combustion air supply and combustion
products exhaust system.
