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AIR-DESIGN.COM
INSTALLATION & MAINTENANCE INSTRUCTIONS
PREMA
CEILING VOID ENERGY RECOVERY VENTILATION UNITS
27
Installation, Fitting and Maintenance Instructions for Ducted Electric PRE / POST-heater
Electric PRE / POST-heater Battery
The electric heater battery is usually used for preventing frost damage to the heat exchanger and / or to bring the
temperature up to its minimum operating level.
Fitting
The PRE-heater is a stand-alone electric heater battery device
for duct mounted PRE-heating that is fitted to intake supply duct
connection. The POST-heater is a stand-alone electric heater battery
device for POST-heating, fitted to the supply duct connection. The
airflow through the heater must be in the direction of the arrow
located on the side of the heater close to the connection box. The
heater can be fitted in either horizontal or vertical ducting but can
only be fitted in ducts that are made of incombustible, hot and cold
resistant material.
The heater must be equipped with a fixed guard which makes it impossible to touch the element.
The heater distance from the fresh air intake end should correspond to at least twice the duct diameter, otherwise there is a
risk of uneven airflow through the heater, which can cause activation of the overheating cut out.
The heater must be connected by a separate suitably rated electrical supply. The heater load will vary according to unit size.
Reference should be made to the information on the data sheets.
The electrical connection cabinet can be freely placed facing upwards or
sideways to a maximum angle of 90°. Fitting with the terminal box facing
downwards is NOT allowed.
The heater may be insulated in accordance with valid regulations for
ventilation ducting. However, the insulation material must be incombustible.
The cover of the heater must be free from insulation so that the name plate is visible and the cover can be removed.
The area where the heater is installed must be kept accessible to allow replacement and servicing. The distance from the
heater’s metal casing to any wood or other combustible material must not be less than 300mm.
Maintenance
No maintenance is required except a periodic functionality test. Work should only be carried out when the main electrical
supply has been isolated and turned off.
Overheating
When the overheating cut out with manual reset has been activated, the heater must not be interfered with in any way,
such as removal of the cover, except by an authorised electrical fitter. The mains power should also be turned off and an
investigation carefully conducted in to the reason for activation of the cut out. When the fault has been eliminated then the
cut out can be reset.
Installation, Operating & Maintenance
PERMA
Installation, fitting and Maintenance Instructions for ducted Electric PRE/POST-heater
Electric PRE/POST-heater battery
The electric heater battery is usually for preventing frost
damage to the heat exchanger and or, to bring the temperature
up to its minimum operating level.
Fitting
The pre-heater is a stand-alone electric heater battery device,
ducted mounted, for pre-heating fitted to intake supply duct
connection. The post-heater is a stand-alone electric heater
battery device, ducted mounted, for post-heating fitted to the
supply duct connection The air flow through the heater must be
in the direction of the arrow located on the side of the heater
close to the connection box. The heater can be fitted in either
horizontal or vertical ducting but can only be fitted in ducts that
are made of incombustible, hot and cold resistant material.
The electrical connection cabinet can be freely placed facing up-
wards or sideways to a maximum angle of 90°.
Fitting with the terminal box facing downwards is NOT allowed
The heater may be insulated in accordance with valid regulations
for ventilation ducting. However, the insulation material must be
incombustible. The cover of the heater must be free from insulation
so that the name plate is visible and the cover can be removed.
The area where the heater is installed must be kept accessible to
allow replacement and servicing. The distance from the heater’s
metal casing to any wood or other combustible material must not be
less than 300mm
.
The heater must be equipped with a fixed guard which makes it
impossible to touch the element.
The heater distance from the fresh air intake end, should
correspond to at least twice the duct diameter, otherwise there
is a risk of uneven airflow through the heater, which can cause
activation of the overheating cut-out
.
The heater must be connected by a separate suitably rated
electrical supply. The heater load will vary according to unit size
Reference should be made to the information on the data
sheets.
Maintenance
No maintenance is required except a periodic functional test. Any
work should only be carried out when the main electrical supply has
been isolated and turned off.
Overheating
When the overheating cut-out with manual reset has been activated,
the following actions should be taken: The heater must not be
interfered with in any way, such as removal of the cover, except by an
authorised electrical fitter.
Turn off the mains power and investigate carefully the reason for
activation of the cut-out. When the fault has been eliminated then the
cut-out can be reset
.
ý þ þ þ
Installation, Operating & Maintenance
PERMA
Installation, fitting and Maintenance Instructions for ducted Electric PRE/POST-heater
Electric PRE/POST-heater battery
The electric heater battery is usually for preventing frost
damage to the heat exchanger and or, to bring the temperature
up to its minimum operating level.
Fitting
The pre-heater is a stand-alone electric heater battery device,
ducted mounted, for pre-heating fitted to intake supply duct
connection. The post-heater is a stand-alone electric heater
battery device, ducted mounted, for post-heating fitted to the
supply duct connection The air flow through the heater must be
in the direction of the arrow located on the side of the heater
close to the connection box. The heater can be fitted in either
horizontal or vertical ducting but can only be fitted in ducts that
are made of incombustible, hot and cold resistant material.
The electrical connection cabinet can be freely placed facing up-
wards or sideways to a maximum angle of 90°.
Fitting with the terminal box facing downwards is NOT allowed
The heater may be insulated in accordance with valid regulations
for ventilation ducting. However, the insulation material must be
incombustible. The cover of the heater must be free from insulation
so that the name plate is visible and the cover can be removed.
The area where the heater is installed must be kept accessible to
allow replacement and servicing. The distance from the heater’s
metal casing to any wood or other combustible material must not be
less than 300mm
.
The heater must be equipped with a fixed guard which makes it
impossible to touch the element.
The heater distance from the fresh air intake end, should
correspond to at least twice the duct diameter, otherwise there
is a risk of uneven airflow through the heater, which can cause
activation of the overheating cut-out
.
The heater must be connected by a separate suitably rated
electrical supply. The heater load will vary according to unit size
Reference should be made to the information on the data
sheets.
Maintenance
No maintenance is required except a periodic functional test. Any
work should only be carried out when the main electrical supply has
been isolated and turned off.
Overheating
When the overheating cut-out with manual reset has been activated,
the following actions should be taken: The heater must not be
interfered with in any way, such as removal of the cover, except by an
authorised electrical fitter.
Turn off the mains power and investigate carefully the reason for
activation of the cut-out. When the fault has been eliminated then the
cut-out can be reset
.
ý þ þ þ
