Hoval TopVent TP, Руководство по эксплуатации

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6.9 Pump control
Instead of the diverting system, a mixing or injection circuit can also be installed in
the load circuit.
Please note the following:
■ Not only the mixing valves but also the pumps in the load circuit are controlled
directly by the unit control box.
■ Terminals for wiring the mixing valves and the pumps in the load circuit are
located in the unit control box.
■ Make sure that valves and pumps which meet the following requirements are
provided on site.
Requirements for mixing valves
■ Use 3-way mixing valves with the following flow characteristics:
– Equal percentage control path
– Linear bypass
■ The valve authority must be ≥ 0.5.
■ The maximum run time of the valve actuator is 45 s.
■ The valve actuator must be continuous, i.e. the stroke changes in proportion to
the control voltage (0…10 V DC or 2…10 V DC).
■ The valve actuator must be designed with a position response (0...10 V DC or
2…10 V DC).
■ The maximum power consumption is 20 VA.
■ Install the valve close to the unit (max. distance 2 m).
Requirements for pumps
■ Voltage .............. 230 V AC
■ Total current ...... max. 4.0 A for all pumps
(heating pump, condensate pump)
6.10 Condensing unit options
Protection hood
Protection hoods protect the condensing unit against strong wind and heavy snow-
fall. They are installed on the side and/or front of the unit.
Condensate drain pan
The condensate drain pan collects and discharges the condensate. It is installed
on the bottom of the condensing unit. The controlled discharge of the condensate
prevents damage caused by ice forming under the unit.
Heating for condensate drain pan
The heating tape prevents the condensate from freezing in the condensate drain
pan and thus protects the unit against damage. It is installed in the condensing
unit and connected in the condensing unit terminal box. Power: 250 W.
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TopVent ® TP
Options
4 218 024-en-04