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WARNINGS 

• 

Installation and any service work on the heat pump may only be performed by authorised and qualified installer 
and after-sales service technicians.  

• 

This device is not suitable for operation with an electrical generator and any attempt to do so will void warranty. 

• 

If  the  heat  pump  may  be  disconnected  from  power  supply  for  prolonged  periods  of  time  or  where  power 
supplies are susceptible to failure, antifreeze must be added to the system. 

• 

Additional  heating  may  be  required  if  heat  pump  is  intended  to  dry  out  a  new  or  renovated  building,  as  the 
initial heat load will be higher than the calculated load. 

• 

Products not installed with the Dimplex hydraulics packs will not be supported by Dimplex. This includes but is 
not limited to thermal stores.  

• 

This  appliance  can  be  used  by  children  aged  from  8  years  and  persons  with  reduced  physical,  sensory  or 
mental capabilities, or lack of experience and knowledge, provided that they have been  given supervision  or 
instruction concerning use of the appliance in a safe way and understand the hazards involved. Children must 
not  play  with  the  appliance.  Cleaning  and  user  maintenance  must  not  be  carried  out  by  children  without 
supervision. 

HEAT PUMP MAINTENANCE 

IMPORTANT - DEFROST INFORMATION

 

During  colder  weather,  frost  builds  up  on  the  evaporator  coil  inside  the  heat  pump.  If  this  frost  remains  in  the 
evaporator, it will cause blockages and will prevent air from flowing efficiently through the heat pump, which will result 
in poor performance. Therefore, when frost starts to form on the evaporator coil, the heat pump runs a defrost cycle. 
This lasts for approximately 4 minutes and melts any frost that is present. 

Approximately 2 litres of condensate water is drained from the system every time a defrost cycle occurs. Therefore, it 
is essential that this water is drained correctly. The heat pump is supplied with a condensate pipe which must be fed 
into  a  drain  or  soak  away  to  allow  for  safe  disposal  of  the  excess  water.  This  will  prevent  icy  patches  forming  on 
footpaths or patios in colder weather 

Please see section 9 of the Installation manual for ‘System Health Checks / Maintenance’ advice. 

 

NOTE: 

During the defrost cycle, the heat pump may operate more loudly than usual. Any extensive noise is due to 

the compressor, and will stop when the defrost cycle is finished. 

Summary of Contents for A Class

Page 1: ...A Class Air Source Heat Pump User Guide Issue 1 04 Draft 8 60476 0 User Manual ...

Page 2: ... Zone temperature 5 3 3 2 Comfort level 6 3 3 3 Operating modes 6 3 3 4 Settings 7 3 3 5 Other display information 7 3 3 6 Quiet mode 7 3 4 Domestic hot water DHW menu 7 3 4 1 DHW set point temperature 7 3 4 2 Maximum achievable temperatures 7 3 4 3 Boost 7 3 4 4 Operating modes and settings 8 3 4 5 Disinfection 8 3 4 6 Other display information 8 3 5 Information menu 9 3 5 1 Login 9 3 5 2 Message...

Page 3: ...ed Children must not play with the appliance Cleaning and user maintenance must not be carried out by children without supervision HEAT PUMP MAINTENANCE IMPORTANT DEFROST INFORMATION During colder weather frost builds up on the evaporator coil inside the heat pump If this frost remains in the evaporator it will cause blockages and will prevent air from flowing efficiently through the heat pump whi...

Page 4: ... the electricity used to power the heat pump The internal layout of the Dimplex A Class heat pump can be seen in figure 2 2 1 TIPS AND ADVICE TO FOLLOW WHEN USING YOUR NEW HEAT PUMP Glen Dimplex heat pumps are designed with efficiency in mind As a result of using our renewable technology rather than combustion or fossil fuels the hot water used to heat your home is heated gradually which allows th...

Page 5: ...chanical thermostats provide less control over the heating system while the temperature probe option allows the heat pump to sense changes in demand and adjust accordingly The temperature probe option is generally recommended over the mechanical thermostat option A zone is defined as the physical area of your home in which temperatures are controlled by each individual device For example you might...

Page 6: ... icon shows the temperature of zone 1 and also the outside temperature both in C Clicking on this icon will bring you to the SH menu see section 3 3 for details and functions 3 2 3 Information Clicking on this icon allows you to view details on the heat pump the current operation of the various parts of the heating system the system run time history and any warning messages that may occur If this ...

Page 7: ...y remain set for anything from 1 hour to 14 days for short term changes or seasonal adjustments or if you wish to keep your settings permanently there is a permanent setting option which will stay as set until you change it again manually The default comfort level setting is 0 3 3 3 Operating Modes The clock icon indicates the current operating mode for the space heating There are three running mo...

Page 8: ... If TIMER mode is set this will override any manual temperature change attempts 3 4 2 Maximum Achievable Temperatures A practical temperature for domestic hot water is 45 C The A Class cylinder and heat pump together can typically achieve up to 60 C The maximum achievable temperature for the heat pump is measured during commissioning and an indication is given when selecting the DHW set point if t...

Page 9: ...isplays the hot water temperature the details of the last disinfection that took place date and time and the date and time of the next scheduled disinfection Disinfection is a function which keeps the level of legionella bacteria in the cylinder under acceptable levels This is carried out by heating the hot water in the cylinder to a high temperature for a minimum set time In the disinfection menu...

Page 10: ...vide them with the error code 3 5 1 Login Clicking on this icon will allow you to input an access code using the rotary dial to scroll through numbers from 0 1000 you can scroll forwards or backwards i e to input 998 scroll back from 0 rather than forward through all of the other numbers Entering the code 998 will allow you to access an additional menu where you can change the time and date the ou...

Page 11: ...off temperature by clicking on the temperature and turning the dial to increase or decrease the temperature If the outside off temperature is set too low for your environment e g default outside off temperature is 18 C and the temperature outside surpasses this e g it is 20 C outside during summer the heating will be switched off and will revert back to the set back temperature see section 3 3 3 O...

Page 12: ...turns OFF space heating until the next scheduled ON time when in TIMER mode 3 6 2 Home Early This mode turns ON your space heating until the next scheduled OFF time when in TIMER mode 3 6 3 Holiday mode This mode allows you to set the space heating and DHW in OFF mode while on holidays By setting the start date and number of days you will be on holidays for the heat pump saves your return date and...

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