General rules for installation
Important note: These thermostat enclosures, compatible with our thermostats types KA, KY and KZ, are intended to monitor or control 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)
NC: 25(4)A NO: 15(2)A, 125/250 VAC; 50/60 Hz; -60°C to +50°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).
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 (Y9B1) or with outside knob set point setting (Y9D1).
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 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: Y9B1602-**-***
Outside knob adjustment: Y9D1602-**-***
** Suffix for the definition of the M25 cable gland fittings for round cables (0 to 5, see datasheet).
*** 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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