Installation, operation and maintenance instructions
for design engineers, installation engineers and service personnel
SDHE_c_EN–m
Swegon
CASA
®
Electric duct mounted air heaters
Important information
Only qualified personnel
Only qualified personnel should carry out installation,
configuration and commissioning.
Observe the following during installation
The air heater is installed in the outdoor or supply air
duct. If the heater is installed in the outdoor air duct
before the ventilation unit, the heater and the duct
must be insulated with nonflamable insulation and a
duct mounted filter must be used for the air heater.
The air heater must be accessible without obstruction. The
air heater must not be installed in the immediate vicinity
of the ventilation unit or duct bends, as this will prevent an
even air flow across the heater resulting in impaired output.
Commissioning
The duct connection spigots of the air heater must be
capped during transport, storage and installation.
Make sure that the air heater and the ducts are clean
and that there are no loose objects in them before
you commission the ventilation system.
Do not commission the air heater until all work that
produces large quantities of sanding dust or other
impurities has been completed.
Electrical safety
The air heater must be installed according to the local
electrical safety provisions.
!
Products
For 125 mm ducts; SDHE125-1T
(LVI nro. 7906723)
• Electric duct heater, 1,2 kW: 300H125-12-1
• SET connection unit
For 160 mm ducts; SDHE160-1T
(LVI nro. 7906724)
• Electric duct heater, 1,2 kW: 300H160-12-1
• SET connection unit
For 200 mm ducts; SDHE200-1T
(LVI nro. 7906725)
• Electric duct heater, 1,2 kW: 300H200-12-1
• SET connection unit
For 250 mm ducts; SDHE250-1T
• Electric duct heater, 1,2 kW: 300H250-12-1
• SET connection unit
For 250 mm ducts; SDHE250-2T
• Electric duct heater, 2,0 kW: 300H250-20-1
• SET connection unit
For 315 mm ducts; SDHE315-1T
• Electric duct heater, 1,2 kW: 300H315-12-1
• SET connection unit
For 315 mm ducts; SDHE315-2T
• Electric duct heater, 2,0 kW: 300H315-20-1
• SET connection unit
NOTE! The manual’s original language is English.
General Description
Duct mounted electric air heater for pre- or post heating
the air.
As pre heater
Guarantees continuous ventilation under very cold
conditions and to permit balancing functions (fireplace
function/cooker hood function) in ventilation units that
are not equipped with an internal air heater.
As post heater
Helps to achieve the desired supply air temperature
under very cold conditions whereby the heat exchanger
may not be capable to heat air sufficiently.
Planning
Take the pressure loss caused by the air heater into
consideration when sizing the airflows and selection of
the ventilation unit.
The airflow through the heater must be greater than 1.5 m/s.
Make sure there is free access to the air heater for service.
The air heater must not be installed with the service hatch
cover directed downwards.
