Intertec Data Systems CP VARITHERM ... BI Series Quick Start Manual

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CP VARITHERM ... BI Electric heater
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
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.
HD653-2c CP VARITHERM ...BI
INTERTEC Instrumentation Ltd. · 225 Henry Drive · Sarnia, Ontario N7T 7H5 · Canada ·
Don't remove the adapter!
Remove just the red protection
cap for conduit installation
that ensure that the trip
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
IEC Scheme Certificate
Marking
CSA Certificate
CSA Type of Protection
Ingress Protection
Nominal voltage
Connection cable
Connection cable for
heaters with alarm ...AM
Conduit connection
Length of connect. cable
Length, width
Material seawater-proof aluminium, black anodized
5 Types
5.1 for freeze protection
CP VARITHERM
200 T3 40 300 T3 80
DPA ... BI
Nom. Power 200 W
Temp. class T3
Height 1.6"/40mm 3.1"/80mm 3.9"/100mm 3.9"/100mm
5.2 for temperature maintenance to 40° C
CP VARITHERM
200 T3 100
DPA ... BI
Nominal power 200 W
Temperature class T3
Height 3.9"/100mm 3.9"/100mm 3.9"/100mm
Temperature control must be provided by an additional TAE
thermostat or TC temperature controller.
+1 888 875 8756 ·
PTB 02 ATEX 1041X
IECEx PTB 07.0052 X
II 2 G Ex d IIC T4, T3, T6
II 2 D Ex td A21 IP65 T135°C,
T200°C
1655545 (LR43674)
Cl. 1, Div. 1, Gp ABCD T3/T4
IP 68
230V AC
EWKF 3x 1,5mm² 8,1mm Ø
EWKF 5x 1,0mm² 8,8mm Ø
½" NPT
39"/ 1 m
8.7"/ 220 mm, 8.4"/ 213 mm
400 T3 500 T3
100 100
300 W 400 W 500 W
T3 T3 T3
300 T3 100 125 T4 100
300 W 125 W
T3 T4
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