Low-Temperature High Efficiency Total Heat Recovery Unit Modular
Air-Cooled Heat Pump
|Air conditioning mode||Nominal cooling capacity||kW||58||116||174||232||290||348|
|Nominal heating capacity||kW||63||126||189||252||315||378|
|Total power of nominal cooling capacity||kW||16||32||48||64||80||96|
|Total power of nominal heating capacity||kW||17||34||51||68||85||102|
|Water flow rate for nominal|
|Water flow rate for nominal|
|Hot water mode||Nominal water flow||m3/h||13.2||26.4||39.6||52.8||66||79.2|
|Nominal heating capacity||kW||77||154||231||308||385||462|
|Total power of nominal heating capacity||kW||19||38||57||76||95||114|
|Cooling + Heat recovery mode||Nominal cooling capacity||kW||57||114||171||228||285||342|
|Nominal heat recovery capacity||kW||70.5||141.0||211.5||282.0||352.5||423.0|
|Total nominal power||kW||13.5||27.0||40.5||54.0||67.5||81.0|
|Nominal water supply capacity at heat recovery side||3|
|Nominal water flow at|
|Power supply|| ||380V/3N~/50Hz|
|Flow control|| ||Electronic expansion valve|
|Air conditioning side|| ||braze-welded panel-type heat exchanger|
|Hot water side|| ||High-efficiency bucket heat exchanger|
|Compressor||Type|| ||High-efficiency bucket heat exchanger|
|Lubricant|| ||LubricantMineral oil (SUNISO 3GS)|
|Fan||Type|| || |
|Water resistance||Air conditioning side||kPa||45||45||45||45||45||45|
|Hot water side||kPa||65||65||65||70||70||70|
|Minimum diameter for water pipes||Air conditioning side||inch||≥2||≥2-1/2||≥3||≥4||≥4||≥5|
|Hot water side||inch||≥2-1/2||≥3||≥4||≥4||≥5||≥5|
|Dimensions||L x H||mm||2012x1840|
|Power cable specification||Section area of live line||mm2||≥10||≥35||≥70||≥95||≥120||≥150|
|Qty. of live lines|| ||3|
|Section area of null line||mm2||≥4|
|Qty. of null lines|| ||1|
|Section area of grounding line||mm2||≥10||≥16||≥35||≥50||≥60||≥75|
|Qty. of grounding lines|| ||1|
■ Air conditioning mode: Test conditions for nominal cooling
capacity: outlet water temperature 7°C; water flow: 0.172
outdoor ambient temperature 35°C. Test conditions for nominal
heating capacity: outlet water temperature: 45°C; water flow:
temperature of outdoor dry/wet bulb: 7°C/6°C.
■ Cooling + Heat recovery mode Test conditions for nominal cooling
capacity: Hot water side: Outlet water temp. 45°C; nominal water
flow for hot water mode.
Air conditioning side: Outlet water temp. 7°C; nominal water flow
for heating mode.
■ Hot water mode: Test conditions for nominal water flow:
temperature of outdoor dry/wet bulb: 20/15°C; Temperature of
inlet/outlet water: 50/55°C.
■ Water resistance at the air conditioner side includes water
pressure drop of the unit and the attached Y-shaped filter.
■ Water resistance at the hot water side includes water pressure
drop of the unit and does not include the pressure drop at the
Y-shaped filter and other components.
■ Pipes outside the unit need to be customized and installed on
site. The diameter of the pipes must meet design requirements. EK
does not provide the pipes.
■ Full heat recovery units and other units can be combined to form
partial heat recovery modular system. Full heat recovery units can
also be combined to form a
total heat recovery system. Modular units can be formed using the
1~16 basic modules. The above table lists the parameters for common
Efficient Components and Optimized System Design
The EKAC series low-temperature high efficiency total heatrecovery
modular air-cooled heat pump unit features stateof-the-art enhanced
vapor injection (EVI) technologies, increasing refrigerant recycle
by 20%. The evaporation capacity is improved by mid-pressure
refrigerant intake. One compressor compresses refrigerant 2 times
in each cycle.Half-M fins are used to improve the heat-exchange
of the heat exchanger. The unit features state-of-the-art cross
diagonal convection angles for stainless steel braze-welded
panel-type heat exchanger and stainless steel braze-welded
panel-type economizer (used to increase the enthalpydifferentiation
between the inlet and outlet of the evaporator). An EXV is used to
precisely control the operation of the unit. Leading-edge Technology and Stronger
Cooling and Heating Capacities
The EKAC low-temperature high-efficiency modular aircooled heat
pump unit features excellent heating COP
when the ambient temperature is low (20% higher than common
air-cooled heat pump unit when the ambient
temperature is -10°C).The lower ambient temperature limit is
expanded from -10°C of common units to -20°C. This greatly improves
cooling performance in areas where the winter is cold, reducing or
eliminating the need for auxiliary heaters.
Efficient and Energy Saving
Each modular unit has two power gears. When multiple modular units
are combined, there could be many power gears. When working at a
partial workload (99% of the operation time), the unit
intelligently regulates the output based on the actual workload,
making the operation efficiency even higher. With an optional 2-way
valve water control feature, the unit can send out signals to cut
off chilled water. This enables automatic flow control for pumps in
line with the transducer, which helps save more energy.
Operation in Low Temperature Areas
The EKAC series low-temperature high-efficiency total heatrecovery
unit features state-of-the-art EVI enthalpy increase technologies,
and can provide effective heating and sufficient hot water when the
ambient temperature is as low as -20°C. The unit can provide
effective heating for areas that are extremely code in winter.
Safe and Comfortable
fast heating; hot water available as soon as you turn on the tap;
absolutely safe as there is no emission of
harmful gas and the risk of electric shock is eliminated by
separating water and electricity. The central hot water system can
provide hot water with a stable temperature for multiple outlets,
making bathing comfortable.
Investments can be made in installments as the project rolls out.
This reduces initial investment for new projects and making
renovation project easy to complete.
Hybrid Connection Technology
Units of this series support modular connection with common
air-cooled heat pump units to meet various
heat recovery requirements.
Units of this series are controlled by microcomputers. Each control
module can control up to 16 units, making
unit combination easier. Temperature and level of water in the
water tank are controlled automatically, and the
water pump starts/stops automatically. No dedicated operator is
required, reducing the management cost by
easy smart control.