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Heat pumps

Heat pumps

A heat pump is a device that draws heat energy from the building's surroundings (air, ground or water) and transfers it to the central heating installation. In this way, it obtains clean, ecological energy at low costs (electricity used to power the compressor). It is used for heating the building, utility water, and also for cooling rooms in hot weather.

While looking for a comfrotable and cheap solution for heating of your home we often think about using a heat pump. Most importantly, we want the heat pump to provide lower costs of our heating and we want it to be relaialble to us for many years. The reason for that is that the prices of fuels are changing rapidly. They are getting higher every year and it is difficult to predict what the situation will be in the next few years.

Two-thirds of the cost of maintaining a building are related to the heating. By using an inexpensive heat source, we can ensure low heating costs for up to 50 years.

Currenlty heat pumps are a reliable, economical and environmentally friendly source of heat with a guaranteed future. In Switzerland, every third house is already equipped with a heat pump. 

 

Heat pumps are divided into different types

The first and most popular type is the air-water heat pump, which draws energy from the outside air using a medium and, after compressing it, uses that heat to heat the water. The second type, i.e. a ground source heat pump (brine-water type), uses energy from the ground as its heat source. This type of a heat pump is very efficient and can work as the only source of heating the house.

Why should you consider heating your home with a heat pump?

Lower costs of building a house - choosing a heat pump deos not require you to build a chimney. We do not have to waste our time looking for good quality fuel at an affordable price – this is the main problem for most people as they can use a fuel that would affect the durability of the boiler, its failure rate and the cost of heating itslef, but the heat pump is one of the cheapest heating methods out there and does not require onerous operation - it boils down only to the appropriate controller settings and adjusting the operation of the installation to the individual needs of users. The amazing quick return on investment is really noticible compared to normal heating - you are lookign at about 5- 7 years on average to return your investment. Also with a long lifetime of the heat pump - with proper installation up to 50 years.

A heat pump can serve as the only source of heating for a building (the exception is an air-to-water heat pump), or it can easily be connected to another installation, e.g. solar collectors or a fireplace with a water jacket. The heat pump can also work with a gas, oil or solid fuel boiler. Another great thing about a heat pump is that in addition to heating, the heat pump can also cool rooms in the summer, increasing comfort in the building.

 

The usage of electricity from biofuels, solar energy and wind is steadily increasing - in the future heat pumps will be powered solely by electricity from renewable energy sources.

DOMESTIC HOT WATER PRODUCTION

The unit operates in heating mode to reach and keep the temperature inside a DHW cylinder (not supplied) to the setpoint value. A 3-way diverter valve (not supplied) is needed, together with a temperature sensor (T5 probe, L = 10m, provided) to be inserted into one well of the DHW tank.

ACCESSORIES

- Electrical booster (backup heater box) Suitable for indoor installation, it consists in an electric heating element (3kW, 230V-1-50) mounted inside a painted sheet metal box, complete with electrical control panel. The heat pump uses the booster for integration purposes. It is used also as a backup out of the operational limit conditions or for alarm.

ANTIFROST PROTECTION

Guaranteed for outdoor air temperature down to -20°C, thanks to the intervention of all the available sources inside the heat pump: the machine operating in heating mode, together with the onboard electric heating element (as a standard on the plate heat exchanger) and the electric booster (if installed).

HYDRAULIC CIRCUIT

It is inside in a compartment, protected from the air flow, to simplify the maintenance operations. It comprises an electronic circulator (brushless DC motor), water flow switch, automatic air vent, water pressure gauge, expansion vessel, safety valve, water filter. The plate heat exchanger and water piping are thermally insulated to prevent condensation on the external surfaces and reduce temperature loss.

CONTROL SYSTEM

The internal controller manages the inverter system and the correct operation of the compressor. It integrates regulation algorithms based on pre-set climatic curves, which can be selected by the user. It is then possible to handle the DHW circuit, alarm alerts, pump anti-seize cycle and integration with external heating sources. An evolved timer is included for climatic and acoustic comfort program.

ADDITIONAL HEATING SOURCES

(boiler or electric heating element). Depending on the parameters set, these sources can intervene as integration of the heat pump, when there is requirement for space heating or for DHW production. The external sources can be automatically switched on, also as a backup, in case the heat pump cannot work for anomaly error or operational temperature limits.

HEATING AND COOLING SYSTEM

The unit, when active in heat or cool mode, modulates the frequency of the compressor with the aim to keep system temperature to the setpoint value.

WEEKLY TIMER

Scheduling on 6 time bands per each day of the week, with specification of the operating mode (COOL / HEAT / DHW) and the required setpoint.

ECO/COMFORT

It is possible to define daily time bands and corresponding set point for ECO and COMFORT modes, either in heating or cooling operation

FAST DHW

This manual function permits to reach DHW setpoint in the shortest time, using all available heating sources.

SILENT MODE

Provided the function is enabled, it is possible to schedule up to 2 periods (normally night/rest ones) when the appliance shall operate in low-noise mode. The maximum frequency of the compressor will be thus reduced, together with fan’s speed. Acoustic drop rate can be set in 2 levels.

REMOTE ON / OFF

using an external contact. The unit can be switched on and off via an external contact.

ADVANTAGES:

- Design adapted for external assembly
- One system for heating, active cooling and hot air.
- High energy efficiency ensuring low operating costs
- High flow temperature up to 60 ° C
- Ecological refrigerant R410A
- Excellent devices for new and modernized facilities
- Inverter compressor with power modulation in the range of 30% -120%
- Silent axial fan with vibration compensators
- Electronic expansion valve for high COP
- Advanced automation enabling operation in monovalent mode
and bivalent (eg with boiler c.o.)
- Easy assembly thanks to the delivery of a completely assembled device
- Access to subassemblies to facilitate service and maintenance
- Small space requirement
- Attractive price - low investment costs

CONTACT

+353 85 163 0695

office@ehs.ie

ADDRESS

33 LIFFEY COURT LIFFEY VALLEY PARK

LUCAN CO. DUBLIN

K78T208

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