Komfovent 1300 U, Руководство по установке

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UAB KOMFOVENT we reserve the right to make changes without prior notice
RHP STANDARD_21-04
EN
3.4. Connection of external heating/cooling units
1
Additionally, you can connect the following to RHP air handling units:
• Water heater.
• Water cooler.
• Direct expansion (DX) cooler/heater.
These accessories are installed in the air supply duct in the premises. All assemblies in the heating or cooling systems
must be connected by a qualified specialist.
When connecting the heater/cooler pipes, they must be supported by a box spanner – otherwise they will be damaged. If
water is used in the heater, for frost protection water temperature sensor (B5), must be installed. It is screwed into the special
hole on the return water pipe. The sensor must be thermally insulated so that the room temperature does not distort water
temperature measurements.
Fig. 9.
Connecting the water heater/cooler hoses and installing the water temperature sensor
• When operating the unit with negative outdoor temperature, a water-glycol mixture must be
used as heat medium in a water heater or cooler or it is necessary to ensure a return water tem-
perature of at least 25 °C.
• Pipework package
2
must include circulation pump, which circulates heating/cooling medium
through the coil (smaller circuit) and 3-way mixing valve with modulated actuator. In cases if
2-way valve is used, additionally it must be installed non-return valves to ensure continuous
circulation around smaller circuit. PPU must be installed as close to the water coil as possible.
• In order to additionally protect the water heater from freezing, you may also use a capillary ther-
mostat (see section “Electrical installation”) that should be mounted on the surface of the heater.
Heat exchanger coil of DX coolers/heaters are factory-filled with nitrogen gas. Before connecting heat exchanger coil to
the refrigerant system, the nitrogen gas is discharged through a valve which is then cut off and coil connections are soldered
to the pipeline.
1 Ordered separately.
2
It is recommended to use PPU made by Komfovent.