Technical data

30
5.4 Altering the flow temperature from the heat pump
Each heat pump has a dedicated display which can be interrogated to view various parameters, alter the
heat pump outlet flow temperature and indicate faults/alarms.
1. Floor return
temperature
2.Heating
symbol
2.Cooling
symbol
3.Compressor
number
3.Compressor
run symbol
n.b. the numbers above refer to the points below.
Fig 30 Heat Pump Display
The display normally reads the temperature of the water returning from the heating distribution system.
The controller will turn the heat pump off once a pre-set temperature of water returning from the heating
system has been achieved. This setting is normally 30 Deg C , which is a typical return temperature for an
underfloor application.
The Vent-Axia Compact Range of heat pumps are delivered with the software pre-configured for a typical
underfloor mounted in screed application.
1. The display on the controller indicates the return temperature of the underfloor circuit.
2. The left hand symbols, sun, (top left) and frost, (bottom left) indicate heating & cooling respectively
(Heating only heat pumps will only use the sun symbol and cooling heat pumps only the frost
symbol. Reverse cycle machines will use both symbols, the one being displayed being dependant on
the operating mode selected at the time.)
3. A number “1” will appear top right of controller this is to indicate compressor number, if the
number “1” is flashing the internal timer is activated and compressor is waiting to run. When the
compressor is running the number “1” and the compressor run symbol will be on.
Sun symbol—heating mode
Frost symbol—cooling mode