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Aktek DMR

HİDREM indoor unit with direct-expansion cooling

HİDREM indoor unit with direct-expansion cooling

Indoor unit with tank that heats with water and cools through air conditioner indoor units; in summer it uses the heat from cooling to make hot water with no extra energy.

  • HDRM8
  • HDRM10
  • HDRM12
  • HDRM14
  • HDRM16
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Highlights

  • Heating with water, cooling with air conditioner indoor units
  • Direct-expansion cooling with no fan coil pipework needed
  • No intermediate water circuit, so cooling with fewer losses
  • Hot water from the heat removed by cooling, with no extra energy
  • Built-in tank: 80 / 100 / 125 / 140 L; buffer tank, storage tank or cylinder
  • Tank inner surface: black enamel or stainless steel
  • Solar collector connection through a second Grundfos pump
  • Mounting frame; connections from the right, left or top
  • 8-inch touch screen; remote commissioning, fault e-mails and energy tracking

Applications

  • Apartments and offices with air conditioner indoor units
  • Buildings without fan coil pipework
  • Detached houses and villas
  • Underfloor heating and radiator systems
  • Domestic hot water
  • Solar collector hot water systems

HİDREM was developed for buildings without fan coil pipework. It uses the same floor-standing casing with tank as HİDRA; the difference is that it also carries a direct-expansion cooling circuit. In winter it supplies underfloor heating or radiators through the water circuit; in summer it sends the refrigerant directly to wall-mounted air conditioner indoor units.

Cooling without fan coils

Cooling with water requires fan coil pipework and well-insulated pipes; most existing buildings do not have this infrastructure. Because air conditioners serve as the indoor units, no fan coil pipework is needed. Since the refrigerant goes directly to the indoor unit, there is no water circuit in between; heat transfer losses are reduced and cooling is more efficient.

Hot water in summer with no extra energy

An ordinary air conditioner rejects the heat it draws from the room to the outside while it cools. HİDREM transfers this heat to the water in the tank: while cooling is running, the water heats up too, and no extra energy is spent on domestic hot water throughout the summer.

Tank and solar energy

Depending on capacity, the tank holds between 80 and 140 litres and, depending on the configuration, works as a buffer tank, a storage tank or a hot water cylinder. The inner surface can be stainless steel or black enamel. Solar collectors on the roof join the system through the second Grundfos pump in the unit.

Installation

As with HİDRA, the unit sits on a mounting frame; because the frame dimensions are fixed, the connections can be prepared in advance and installation is quicker. Since the pipework can be connected from the right, the left or the top, it also fits into tight plant spaces. Fittings that are normally bought separately on site come ready in the casing, which makes installation and any later work on the unit easier.

Panel and monitoring

The 8-inch touch panel is integrated with the control board. Where the infrastructure allows, the unit is commissioned and managed remotely; in the event of a fault, a notification arrives by e-mail. Energy consumption is shown on the panel daily, monthly and yearly.

Outdoor unit

HİDREM is built in five classes between 8 and 16 kW and pairs with the Poyraz, Vaha or Boran outdoor units.

Technical data

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ModelHDRM8HDRM10HDRM12HDRM14HDRM16
Mounting typeFloor-standing, with tankFloor-standing, with tankFloor-standing, with tankFloor-standing, with tankFloor-standing, with tank
Heating capacity, min – max (kW)1.3 – 81.72 – 102.3 – 122.5 – 142.7 – 16
Cooling capacity, min – max (BTU/h)3,414 – 20,1255,462 – 27,3907,852 – 32,6209,559 – 37,76910,430 – 41,172
Outdoor air operating range (°C)−25 … +40−25 … +40−25 … +40−25 … +40−25 … +40
Heating water temperature (°C)+30 … +55+30 … +55+30 … +55+30 … +55+30 … +55
Cooling circuitDirect expansion (air conditioner indoor unit)Direct expansion (air conditioner indoor unit)Direct expansion (air conditioner indoor unit)Direct expansion (air conditioner indoor unit)Direct expansion (air conditioner indoor unit)
Cooling operating temperature (°C)−5 … 0−5 … 0−5 … 0−5 … 0−5 … 0
Circulation pumpGrundfos, 1,700 L/hGrundfos, 1,700 L/hGrundfos, 1,700 L/hGrundfos, 1,700 L/hGrundfos, 1,700 L/h
Solar circuit pumpGrundfos, 1,700 L/hGrundfos, 1,700 L/hGrundfos, 1,700 L/hGrundfos, 1,700 L/hGrundfos, 1,700 L/h
Built-in tank volume (L)80100125140140
Max. power input (W)30 – 13030 – 13030 – 13030 – 13030 – 130
Power supply220–240 V / 1 phase / 50–60 Hz220–240 V / 1 phase / 50–60 Hz220–240 V / 1 phase / 50–60 Hz220–240 V / 1 phase / 50–60 Hz220–240 V / 1 phase / 50–60 Hz
Sound pressure at 1 m (dB(A))2222223434
Refrigerant + air conditioner connection (in)3/8" – 5/8" + 3/8" – 5/8"3/8" – 5/8" + 3/8" – 5/8"3/8" – 5/8" + 3/8" – 5/8"3/8" – 3/4" + 3/8" – 3/4"3/8" – 3/4" + 3/8" – 3/4"
Hot water connection (mm)Ø15Ø15Ø15Ø15Ø15
Heating connection (mm)Ø25Ø25Ø25Ø25Ø25
Unit dimensions W × D × H (mm)500 × 1520 × 500500 × 1650 × 500500 × 1650 × 500500 × 1750 × 500500 × 1750 × 500
Shipping dimensions W × D × H (mm)550 × 1620 × 550550 × 1750 × 550550 × 1750 × 550550 × 1850 × 550550 × 1850 × 550
Weight (kg)123127134139140

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