1 General information
General information
TCGB0123 rev.2 - 10/2019
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YUTAKI S COMBI
The indoor unit of YUTAKI S COMBI is conceived as a oor standing unit. It is prepared for heating operation as well as
for domestic hot water production. For this purpose, it has a built-in domestic hot water tank available in two sizes (200 or
260 L). In line with YUTAKI S units, it meets the needs of installations with low capacity requirements.
Furthermore, special YUTAKI S COMBI models have been designed with a specic solar tank for the use of solar panels.
Also, new models for the UK market that meet the UK requirements referred in the UK Building Regulations.
Monobloc system - YUTAKI M
YUTAKI M is a monobloc air to water heat pump system composed by only an special outdoor unit, which carries out the
function of an air-to-water heat pump. This results in an excellent solution when installation space available is limited.
YUTAKI M is designed to be installed outdoors, in any kind of dwelling (house, apartment, villa,…), whether in a new
construction or in an existing building. Installation work is greatly simplied thanks to the lack of refrigerant piping
connections.
1.1.2.2 Summary of operations
Space heating
YUTAKI units are factory-supplied ready for space heating operation. Different heating installation congurations can be
selected, providing a comfortable atmosphere all year long, even in the coldest climates:
• Mono-valent system
The air to water heat pump is sized to provide 100% of the heating requirements on the coldest day the year.
• Mono-energy system
This is the most popular conguration. The air to water heat pump is sized to provide 80% of the heating
requirements on the coldest days of the year. An auxiliary electric heater is used to provide the additional heating
required on cold days. This option usually results in an ideal balance between installation costs and future energy
consumption, as proven by its popularity in colder climates than ours, such as Sweden and Norway.
• Alternating Bi-valent system
For installations with an existing heating system by boiler and when is needed to heat the supplied water temperature
to the circuit up to high temperatures (80ºC), the boiler can be congured to alternate with the air to water heat pump.
Selecting the different conguration types it is possible to adapt the system to all customer requirements, providing a
wide application range from the simplest conguration to complete conguration: Radiator, heating oor or both (2nd
temperature area).
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