Heating and Cooling
If you are planning to use your system for heating and cooling consider the following
- Aquarea model series C, D and E are available in heating only or heating and cooling models. Choose a heating and cooling model type C (eg WH-MXC) rather than a heating only type F (eg WH-MXF)
- Aquarea model series F and above are delivered as heating only models but can be configured on site for cooling
- HT models are not available in heating and cooling
- A typical cooling demand in a room is 140 W/m2 compared with 60 W/m2 for heating. This means you must either oversize the system to cope with the cooling demand or only fit cooling capable fan coils in some rooms
- The heating only zones should be fitted with a two way valve to isolate them when the system goes into cooling mode
- Do not try to use radiators, under floor heating circuits or low temperature radiators for cooling
- Only use Panasonic AIR fan coils or other dedicated heating and cooling fan coil designs and ensure they are sized correctly for cooling operation at 24C / 17C db/wb air on temperature and 7C flow and 12C return water
- Ensure that all pipes or metal surfaces that could get cold and sweat are properly insulated
- Contact us to discuss a heating and cooling alternative to the Heating Controller
- Consider using a small air to air heat pump in the zones requiring cooling rather than installing an Aquarea heating and cooling system where only one or two rooms need cooling
- Remember - you will not get the RHI for a heating and cooling system
A properly designed Aquarea heating and cooling system can be very effective but it is much more complicated than a heating only system.
In almost every system where we have been asked to consider a heating and cooling Aquarea system so far it has been proven to be more cost effective to use a heating only Aquarea system for most of the house and put a small air to air heat pump in the master bedroom for cooling.