www.intertec.info
INTERTEC Instrumentation Ltd. · 225 Henry Drive · Sarnia, Ontario N7T 7H5 · Canada ·
+1 888 875 8756 · [email protected]
CP VARITHERM … BI Electric heater
HD653-2c CP VARITHERM …BI
page 1/ 3
1 Application
Heating of instrument enclosures in hazardous areas,
designed for
freeze
protection
condensation
protection
temperature
maintenance
preferably
horizontal installation.
2 Special Features and Advantages
Horizontal design allows for optimum installation of the
heater underneath the instruments in the enclosure
High heat transfer capabilities due to large surface area
of black anodized aluminium fins
Heater fins can be removed and modified by INTERTEC,
if necessary for installation purposes
3 Description
VARITHERM heaters are finned heaters, heating the air in the
enclosure by convection.
A non-resettable temperature limiter built to ATEX design
specifications is integrated in the core block, cutting off the
power in case of a technical failure or excessive heating
resulting from an external heat source. For this reason and for
reasons of operational safety the heater must only be
operated under conditions that ensure that the trip
temperature of the limiter will not be exceeded:
The ambient temperature in the enclosure must not
exceed the maximum permissible values.
An additional external TAE or TS thermostat or must be
connected in series and installed on the surface of the
heater to enhance thermal coupling (see 7). Alternatively,
a TC temperature controller can be used.
Ensure effective convection by observing the necessary
clearances as per section 7 on the next page. Take care
not to cover the fins.
A residual-current-operated protective device with a rated
value of not more than 300 mA, preferably 30 mA should be
installed.
A temperature indicator shows potential problems and failures
at an early stage (e.g. incorrect installation). Please check the
application if more than 3 fields have irreversibly changed to
black.
Warranty null and void if Heater strip has been removed from
Heater.
All INTERTEC explosion-proof heaters can also be supplied
in a less expensive, non-explosion-proof design
to American NEC standard (CSA/ NRTL).
to ATEX/ IEC standards
Other types upon request.
For any specific applications requiring high temperature
maintenance we will be pleased to select the suitable
combination of heater and controller.
4 Technical
data
EC-Type-Examination
Certificate
PTB 02 ATEX 1041X
IEC Scheme Certificate
IECEx PTB 07.0052 X
Marking
II 2 G Ex d IIC T4, T3, T6
II 2 D Ex td A21 IP65 T135°C,
T200°C
CSA Certificate
1655545 (LR43674)
CSA Type of Protection
Cl. 1, Div. 1, Gp ABCD T3/T4
Ingress Protection
IP 68
Nominal voltage
230V AC
Connection cable
EWKF 3x 1,5mm² 8,1mm Ø
Connection cable for
heaters with alarm ...AM
EWKF 5x 1,0mm² 8,8mm Ø
Conduit connection
½“ NPT
Length of connect. cable
39”/ 1 m
Length, width
8.7”/ 220 mm, 8.4”/ 213 mm
Material
seawater-proof aluminium, black anodized
5 Types
5.1
for freeze protection
CP VARITHERM
DPA … BI
200 T3 40 300 T3 80
400 T3
100
500 T3
100
Nom. Power
200 W
300 W
400 W
500 W
Temp. class
T3
T3
T3
T3
Height
1.6”/40mm 3.1”/80mm 3.9”/100mm 3.9”/100mm
5.2
for temperature maintenance to 40° C
CP VARITHERM
DPA … BI
200 T3 100 300 T3 100
125 T4 100
Nominal power
200 W
300 W
125 W
Temperature class
T3
T3
T4
Height 3.9”/100mm 3.9”/100mm 3.9”/100mm
Temperature control must be provided by an additional TAE
thermostat or TC temperature controller.
Don’t remove the adapter!
Remove just the red protection
cap for conduit installation
