63 © STULZ SpA . – all rights reserved EN/39B/06.2018
SAL
3. Disposal at the end of life of the unit
The unit must be disposed of ensuring separation of the following materials:
• Refrigerant - The refrigerant must therefore be recovered before dismantling the unit.
• Metals
• Copper pipes– may contain traces of oil
• Insulation and sound-absorbing materials
• Electric and electronic components
• Cables and wiring
• Oil content within the compressors–is polyester based (POE). Refer to the label on the
compressor.
• Plastic Parts - Plastic parts that are important in terms of weight are the following:
Identified Substance CAS Number
acrylonitrile butadiene styrene terpolymer 9003569
polystyrene homopolymer 9003536
polycarbonatefrom bisphenol A 103598772
11. Options
11.1. Protective treatment on heat exchangers – TREATS
It’s a protective treatment on condenser and evaporator surface in order to protect them against
corrosion by salt spray. This option consists of epoxy treatment on the evaporator surface and
cataphoresis treatment on condenser surface.
This treatment reduces efficiency of the heat exchanger.
11.2. Electrical reheat – RSC
This option is useful when heating of the internal air is required. Electrical reheat is made of
aluminium and includes a safety device. It's controlled directly by C2020 controller. Heaters
are divided in single-phase modules, each with 1,5 kW of heating capacity and 6,52 A current
absorption at nominal voltage.
Maintenance:
• Heating resistance doesn't require any specific maintenance operations, only the periodic check
of their fixation to supports and their cleanliness; this check has to be done together with the
general check of the unit.
Protection of the heaters:
• Mechanical safety thermostat of heating elements (if present): it protects the heating elements
by cutting off the power supply in case of excessive surface temperature of the heating elements.
The thermostat is adjusted to 90°C.
11.3. Kit for low external temperatures - Winter kit
When minimum outdoor temperature is below -25°C and cooling function is still required,units must
be provided with this option. With this kit, minimum outdoor working temperature is -40°C.
The kit is installed in factory and it's composed of: