elco RENDAMAX 30, Operating Instructions Manual

Page: 12 / 28

Assembly
Air / exhaust system
Design variations
Connection to air and exhaust
chimney not sensitive to moisture
C43x (AZ)
The straight air and exhaust pipes
must not be longer than 1.4m when
installing the air and exhaust chimney.
There must not be more than three
90
o
bends.
The air and exhaust chimney AZ must
be tested by the DIBT (German
Institute for Building Technology); the
VKF (Association of Cantonal Fire
Insurance Companies), the ÖTZ and
be approved for burners.
Connection to exhaust chimney not
sensitive to moisture or exhaust
system B23 for ambient air depen-
dent operation
The straight air and exhaust pipes must
not be longer 2m when installing an
exhaust chimney. There must not be
more than three 90
o
bends.
The exhaust chimney must be tested
by the DIBT; the VKF, the ÖTZ and be
approved for burners.
Connection to a combustion air and
exhaust system C63x without a
tested gas furnace
The straight air and exhaust pipes must
not be longer 2m when installing a
combustion air and exhaust system.
There must not be more than three
90
o
bends.
The exhaust system must be tested by
the DIBT; the VKF, the ÖTZ and be
approved for burners. If the combustion
air is taken from the shaft, it must be
free from impurities.
Multiple configuration of exhaust
systems
(not included in the delivery)
The proof of the calculation, design and
function from the manufacturer of the
boiler system must be taken into
consideration in the event of multiple
configurations of the exhaust system.
The local applicable provisions must
be observed for the design of the
exhaust system.
Connection to gas / exhaust system
Only original accessories and parts,
including the offered lubricants for PPS
exhaust systems, must be used for the
concentric air/exhaust gas system.
Gas burners with an air/gas design via
a roof can only be installed in the attic
or in rooms where the ceiling also
forms the roof or there is only the roof
construction over the ceiling.
The air/gas design must not pass
through other rooms.
If a fire-resistance period is demanded
for the ceiling, the pipes for the
combustion air and exhaust system in
the area between the upper edge of
the ceiling and the roof skin must have
a cladding which also has this
fire-resistance period and comprises
non-flammable materials.
If no fire-resistance period is demanded
for the ceiling, the pipes for the
combustion air and exhaust system
from the upper edge of the ceiling to
the roof skin must be in a shaft of
non-flammable, robust materials or in
a metal protective pipe (mechanical
protection).
It must be possible to check exhaust
pipes for free cross-sections. At least
one corresponding revision and / or
test opening must be fitted in the
installation room must have in
accordance with the appropriate district
master chimney sweep.
Exhaust connections are produced
between the sleeve and seal. Sleeves
must always be positioned against the
direction of condensation flow. The
air/gas system must be installed with a
3
o
slope to the burner.
Upon installation, the length to be
calculated of the air and gas system
through the roof must not exceed 4m.
The calculated length of the air and
gas system comprises the straight
pipes and the length of the curved
pipes. A 90
o
bend is treated as 1m and
a 45
o
bend as 0.8m.
In order to prevent mutual impacts on
the air and gas systems through the
roof, we recommend a minimum
distance between the air and gas
systems of 2.5m.
Connection to air and exhaust
chimney not sensitive to moisture
(AZ), exhaust chimney or exhaust
system
Chimneys and exhaust systems must
be approved under building regulations
for furnaces (DIBT approval for “D”,
VKF for “CH and ÖTZ for “A”).
The size is calculated using the
calculation tables according to the
exhaust gas values. There must not be
more than three 90
o
bends. For
chimneys, 0 Pa must be assumed
when calculating the feed pressure.
Temperature [
o
C] Volume flow [m
3
/h] Mass flow [g/s] Feed pressure [Pa]
RENDAMAX 30 max. / min. max. / min. max. / min. max. / min.
65 70 / 55 113 / 16 31 / 4 140 / 10
85 70 / 55 149 / 30 41 / 8 140 / 15
100 70 / 55 168 / 34 46 / 9 140 / 15
120 70 / 55 209 / 42 58 / 12 200 / 15
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