General rules for installation
Important note: These thermostat enclosures, compatible with our thermostats types KA, KY and KZ, are intended to monitor or control ambient temperatures in gas or dust hazardous areas. PPS enclosure and stainless-steel accessories allow their use in industrial or marine environments, including in cold polar areas.
For gas hazardous areas, this equipment is approved as “Ex-eb db” and is suitable for use in zone 1 and zone 2, gas group IIC (Hydrogen/Acetylene, the highest protection group), with a temperature classification T6/T5;
For dust hazardous areas, this equipment is approved as “Ex-tb”, suitable for use in zone 21 and zone 22, dust group IIIC (electric conductive dust, the highest protection group), maximum allowed equipment temperature 80°C/95°C.
The applicable ambient temperature of the equipment is:
NC: 16(4)A NO: 10(2)A, 125/250/400 VAC; 50/60 Hz; -60°C to +50°C (T6/T80°C)
NC: 16(4)A NO: 10(2)A, 125/250/400 VAC; 50/60 Hz; -60°C to +70°C (T5/T95°C)
Approvals
These enclosures are certified:
- ATEX: TÜV 22 ATEX 8894 X;
- IECEx: IECEx TUR 22.0059 X;
- CCCEx: pending
Housing: UV-resistant PPS (according to UL746C Table 25.1). Excellent salt spray resistance: >1008h according to DIN EN ISO9227 (the highest resistance class). IP65 waterproof rating. Impact resistance greater than IK10 (compliant with ATEX standards). They allow the mounting on the side of coiled bulbs for ambient temperature measurement.
Cover: Mounting with four captive stainless steel screws. The cover also includes a stainless steel anti-fall chain and two holes for seals. Two versions are available: for internal thermostat adjustment (Y9C3) or with outside knob set point setting (Y9E3).
Identification: Anodized aluminum plate, fixed to the cover.
Electrical connection: On internal junction block. Six terminals for 4mm² conductors, including one ground terminal, 2 neutral terminals and 3 live terminals.
Maximum electrical rating: 25A 400V (T5 self heating).
Cable glands: One M20 cable gland for capillary output, one M20 cable gland for power connection (for cables diameter 6 to 10mm) and one M25 cable gland for power connection (for cables diameter 8 to 16mm) are included as standard. See the coding for the selection of seals.
Mounting: Wall-mounted, with two 6.5mm diameter holes, center distance 100×95mm. Internal stainless steel mounting board.
Ambient temperature range: -60°C to +70°C
Options
- Cable glands can be fitted with special bolts for use with electrical cable protection tubes with ATEX approvals.
References
Internal adjustment: Y9C3602-*-**-***
Outside knob adjustment: Y9E3602-*-**-***
* Suffix for the definition of M20 cable gland fittings for electrical connection.
** Suffix for the definition of M25 cable gland fittings for round or flat cables.
*** Part number of the thermostat installed inside: see KA thermostats pages.
Classification
Gas classification: Ex II 2G Ex eb db IIC T6/T5 Gb
Dust classification: Ex II 2D Ex tb IIIC T80°C/T95°C Db
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