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7.7.3
n
0311767_HWH_32-129_II_UKUK_V2.4, 2020-01-31
2.
Sum the lengths of the bends. Ignore the bend in the adapter box:
-
Sum L
equivalent
-
Sum L
equivalent
3.
Sum the lengths of the pipe sections and the lengths of the bends to calculate the
overall length of the air inlet and the flue gas outlet.
4.
Adjust the length of the air inlet and/or the flue gas outlet when the overall length
exceeds the maximum length as stated in the table.
C43/C53/C63 systems
The length of the air inlet and flue gas outlet is the same for C43, C53 and C63 systems as
for C13 and C33 systems:
•
Refer to C13/C33 concentric systems for the maximum pipe lengths of concentric
systems.
•
Refer to C13/C33 parallel systems for the maximum pipe lengths of parallel systems
and non-concentric systems.
Note
Only use a C43 venting system when the common duct is a natural draught chimney. The
common duct is part of the building, not a part of the system.
Note
In a C53 venting system the flue gas terminal must be CE approved and must comply to
the EN 1856-1 requirements.
Note
Connect a C63 venting system to a separately approved and marketed system for the
supply of combustion air and discharge of flue gasses.
The flue gas terminal must comply to the EN 1856-1 requirements. The maximum
allowable recirculation rate is 10% under wind conditions.
Contact Lochinvar for more information and/or part numbers of the C43, C53 and C63
venting systems.
Concentric systems
Refer to the table for the correct pipe dimensions of the C43, C53 and C63 concentric
systems.
Description
Manufacture venting material
Construction
Material flue gas outlet
Material air inlet
Diameter flue gas outlet
Diameter air inlet
Refer to C13/C33 concentric systems for the Lochinvar part numbers. The same parts can
be used for the C43, C53 and C63 concentric systems.
Parallel and non-concentric systems
Refer to the table for the correct pipe dimensions of the C43, C53 and C63 parallel
systems.
Description
Manufacture venting material
Construction
for each 45° bend.
for each 90° bend.
HWH 32-220 -
63-370
Muelink & Grol
Concentric
Thick walled aluminum Thick walled aluminum
Thin walled galvanized
steel
100 mm
150 mm
HWH 32-220 -
63-370-
Muelink & Grol
Parallel
HWH 87-480 -
129-480
Muelink & Grol
Concentric
Thin walled galvanized
steel
130 mm
200 mm
HWH 87-480 -
129-480
Muelink & Grol
Parallel
65
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