Safety And Control Systems; Heat Pump Installation And Connection; Site Selection - AZURO BP-50HS-A Installations- Und Bedienungsanleitung

3.5

SAFETY AND CONTROL SYSTEMS

The heating pump is fi tted with the following systems:
Heat pump control based on temperature:
The temperature sensor of evaporator triggers the defrosting process.
The ambient (outdoor) temperature sensor provides for switching the heat pump OFF, if the temperature drops below 7 °C (factory setting). The normal
operation will resume as soon as the ambient temperature has risen to -5 °C (factory setting). For the procedure for changing the factory settings see,
please, chapter 5.3 Operating Parameter Setting and Checking.
The temperature sensor installed on the heat exchanger provides for switching the heat pump OFF, as soon as the water temperature has achieved its required
temperature. The normal operation will resume as soon as the temperature of water in the exchanger has decreased by 2 °C below the set temperature (factory setting).
Safety systems include:
The water fl ow rate sensor installed at the heat exchanger inlet.
The fl ow rate sensor switches the heat pump ON, when water is fl owing through the exchanger and switches the pump OFF in the moment the water
stops fl owing or the fl ow rate drops below its minimum required value.
The sensor of minimum/maximum gas pressure in the cooling circuit.
The temperature sensor in the compressor delivery line.
Time delay
The equipment is provided with a time-delay device with the set time lag of Z 1÷3 min. for protecting the control devices in the circuit and removal of
repeated restarts and contactor vibrations. This time delay will restart the equipment automatically within approx. 3 minutes after each interruption
of heat pump operation. The time delay will be enabled even in the case of a short interruption of power supply and prevent the equipment from
starting earlier than the pressures are equalised in the cooling circuit. Any interruption of power supply in the course of the delay will not infl uence
the set time interval.
In the case of failure of any of these systems (if a system defect or disconnection takes place or an abnormal temperature is measured), the relevant error
message is displayed on the screen, see chapter 7.3 Error Messages and Their Removal herein below.
Warning: The removal of any of the safety and control systems or putting it out of operation shall cause cancellation of the guarantee.
4.0

HEAT PUMP INSTALLATION AND CONNECTION

4.1

SITE SELECTION

The heat pump is intended for outdoor installation and will operate well in almost any outdoor environment, provided that the three following
prerequisites are met:
1. Fresh air
(a) Do not install the heat pump in a contained area with limited access of air, where
the air cannot circulate freely enough. Both the infl ow and outfl ow of air should not
be restricted in any respect. In the working area around the heat pump, as indicated
in the fi gure, no items can be placed. Do not place the pump among bushes and
shrubs that could restrict the access of air. Any obstacle to free circulation will
reduce the effi ciency of heat exchange and can even result in stopping the pump
(b) The equipment shall be installed at a place protected from direct sunlight and
other heat sources, where it can intake air from a naturally sun heated space.
It is further recommended to erect a light roofi ng above the pump to protect
it from direct sunlight and rain.
(c) Do not place the equipment close to any road where it would come into
contact with products of traffi c, as any increased dust content in air will cause
progressive deterioration of heat exchange effi ciency.
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2. Electric power 3. Piping system including pool water fi ltration