UAB KOMFOVENT we reserve the right to make changes without prior notice
RHP-C5.1_21-01
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Heat pump built-in air handling unit are controlled by air set point temperature. Heating or cooling
function is activated automatically by set point and demand. Default temperature control order:
1. Rotary heat exchanger;
2. Heat pump;
3. Electric heater;
4. Additional cooler or heater (if installed).
HP operation at low outdoor air temperatures and high indoor humidity, potential evaporator
freezing (in exhaust air flow). At the time on the heat exchanger forms white frost, snow, ice. To manage
freezing defrost function are activated. Due defrost, supply air temperature decrease. Units are equipped
with electric heater to heat up air in defrost mode or in low outside temperatures. Heat pump start may
be limited due to low pressure or low outside air temperature information message shows up on display.
If heat pump operation are limited, heating or cooling function carried out by secondary heater/cooler
(if installed). Heat pump capacity depends from air flow. It‘s not recommended to use units with high air
flows difference between supply and extract air. If there are more than 20 % difference between supply
and extract air flows, heat pump efficiency and capacity decreases or heat pump may not work properly
at all. For stable operation of the device, set the device controlling mode under the indoor temperature
(duct or room).