Gapsal OKS 25

General Description

Gapsal Zero OKS on is the main heating unit for a residential building, containing all the key components of a heat pump. A water heater can be added as an accessory.

The Zero series uses the refrigerant R454C with a very low GWP, in line with the EU’s long-term climate goals.

Maximum heating water temperature: up to +75 °C .

Power Range

• 25kW

Suitable for both smaller and higher heating demand residences.

Main Functions and Components

• Includes:
  • Auxiliary electric boiler
  • Domestic hot water valve
  • User interface
• Does not include an integrated water heater (a separate unit with suitable capacity must be added).
• Internet connection: enables remote control and monitoring (computer/smartphone).
• Passive and active cooling capability.
• Electrical system protection:
  • Phase loss
  • Phase sequence change
  • Under- and overvoltage in phases
• Very low noise level – compressor in a separate noise reduction enclosure.
• Ground loop connections at the back of the unit (connectable from both sides or from the top).

Hot Water Solutions

• No integrated water heater included.
• A separate water heater of the desired capacity can be added (the heater’s coil must match the heat pump’s output).
• High temperature ensures an abundant supply of hot water and allows the use of higher-temperature radiators.

Environmental and Technical Indicators

• Refrigerant: R454C GWP148
• Efficiency factor(SCOP): 4,65–4,79
• Electrical power input: 1,37–2,58 kW (depending on model)
• Electrical connection: 3×400 V
• Compressor: scroll
• Oil: POE
• Heat transfer fluid: Ethanol or ethylene glycol 30% mixture (-17 °C)
• Electrical protection: 3×16 A kuni 3×20 A
• Weight: 190–240 kg
• Dimensions: 1480 × 700 × 680 mm