Reznor, PVE, Installation Manual EN 2019-11, D301113 iss D Page 17
PVE
30-50
72-145
Heater socket and pipe diameter (mm)
Flue pipe/inlet pipe
100
130
Maximum straight length (with wall/roof terminal) (m)
Flue pipe/inlet pipe
9*
Equivalent length of 45° elbow (m)
Flue pipe/inlet pipe
0.75
Equivalent length of 90° elbow (m)
Flue pipe/inlet pipe
1.5
Table 13: : Maximum flue system pipe lengths
Use only one flue pipe diameter on an installation.
Recommended minimum flue is 1m.
* Mentioned lengths apply only when :
• No elbow installed immediately after flue and inlet
• Successively installation of several elbows without straight pipe
Flue outlet
Venter outlet attachment requirements:
Depending on the size of flue pipe as
determined in Table 12, attach either the
flue pipe directly to the collar or a taper-type
connector.
Single wall flue pipe exposed to
cold air or run through unheated
areas should be insulated to
avoid condensation. Provision must be
made for the condensation to flow freely
to a point to which it can be released, i.e.
a drain or gully. The condensation drain
from the flue must be constructed from
non-corrodible material not less than 20
mm diameter. Copper or copper based
alloys must not be used for condensation
drains
For testing, the flue pipe should include
a sealable test port. Ideally the test port
should be at least 450 mm away from the air
heater flue connection socket. However if a
concentric flue fitting is attached directly to
the connection sockets then the combustion
should be tested through the flue outlet collar
via a drilled test port which must be securely
plugged on completion.
Follow the flue pipe manufacturers installation
instructions for making joints, including
connections to the air heater, for passing
through a building element and for support
requirements.
Gasket sealed single wall flue seamless
aluminium or stainless steel pipes are required.
All joints must be sealed to prevent products
of combustion from leaking into the building.
If the flue passes through a combustible
element of the building it must be enclosed
by a sleeve of non-combustible material and
separated from the sleeve by a minimum of
25 mm air break. The temperature of any
combustible material near to the flue must not
exceed 65°C when the heater is in operation.
The flue must be at least 150 mm away from
any combustible material.
FLUES FOR POWER VENTED INSTALLATIONS
(type B appliances)
If the air heater is to be installed as a type B
appliance, air for combustion will be taken
from within the space where the heater is
installed. Ensure that an adequate air supply
for combustion and ventilation is provided
within the building in accordance with codes
of practice and relevant standards plus other
rules in force
