NIBE S735 - Exhaust air heat pump
Verified by manufacturer 1 month ago
S735-7 (1 x 230 V)
S735-7 (1 x 230 V)
Indoor exhaust air heat pump.
Application
The S735 Exhaust Air heat pump is installed indoors to provide heating, hot water and mechanical ventilation.
The compact indoor module, which sits within a 600mm x 600mm footprint, is the ideal solution for new-build apartments and thermally efficient houses.
The S735 allows for heat pump technology to be installed in properties where Air Source or Ground Source heat pump equivalents are not viable, and combines the benefits of heat pump technology with ventilation heat recovery to provide efficient and economical heating and hot water.
The S735 product is a recognised technology within the SAP Product Characteristics database, helping specifiers and consultants to achieve compliance with energy performance targets.
Description
The NIBE S735 is an exhaust air heat pump that uses a combination of outdoor and ventilation air as its heat source.
The complete all-in-one unit supplies ventilation (including heat recovery), space heating and hot water, offering an efficient and sustainable total solution without the need for external equipment.
With the myUplink smart home accessories, the S735 provides automatic smart ventilation based on temperature, humidity and CO2 levels, maintaining a complete indoor climate.
The NIBE S735 features an integrated centralised Mechanical Extract Ventilation (CMEV) system as standard, and can be combined with the SAM S42 accessory to create a centralised balanced supply and extract ventilation system.
Within its compact 600x600mm footprint the S735 features an integrated 180 litre stainless steel unvented hot water cylinder. For properties with a higher hot water demand the S735 can be combined with the NIBE DWS accessory to provide an additional 135 litres of storage capacity.
SAM S42 Ventilation Module
- SAM S42 balanced ventilation module, allowing for a 4-pipe ducted extract and supply ventilation system equivalent to an MVHR.
- SAM S42 has an integrated buffer vessel and heat exchanger to temper the incoming supply air.
- Includes a 3-way diverter valve and circulation pump for automatic flow control.
DWS Hot Water Extension
- Additional hot water capacity for NIBE EAHP products, removing the restrictions of the integrated 180 litre storage tank.
- The DWS accessory will provide approximately 135 litres of additional hot water capacity, making the S735 product suitable for up to 5 bedroom houses, especially when considering the 7 kW maximum output capacity.
- DWS will be installed alongside S735 to create a total footprint of 600 x 1200 mm.
Features and benefits:
- Capacity - Available in 4 kW and 7 kW models, the S735 is an extremely powerful exhaust air product.
- Connected - Based on the S-series control platform, with Wi-Fi connectivity, the S735 connects to the myUplink remote monitoring platforms.
- Smart Ventilation with the use of myUplink, with demand controlled ventilation functionality based on CO2 and Humidity levels.
- High performance characteristics.
- Natural R290 refrigerant.
- A+++ energy rating.
- 70°C hot water flow temperatures.
- Sound Power Level <49 dB(A).
- Optional accessories to create a complete solution.
General information
Color | Silver Grey |
Finish | Powder-coated |
Material | Steel Stainless steel Copper Aluminium Brass |
Shape | Rectangle |
Length | 620 mm Manufacturer guidanceDepth |
Width | 600 mm |
Height | 2025 mm Guidance for specification option: The S735 unit is delivered in two separate units to allow for easy installation, with a total finished product height of 2025mm. NIBE recommend that 300mm is left above the S735 unit for the connection of the ventilation ducts. In properties where there is a restricted ceiling height the S735 product can be installed in two parts using additional accessories. Please contact NIBE for further guidance. |
Warranty description | Two year Guidance for specification option: The product is guaranteed for 24 months for parts and labour from the date of installation or 33 months from the date of manufacture, whichever is shortest, as standard. |
Uniclass | |
CAWS | T90/505 Air-to-water heat pumps T90/505 Air-to-water heat pumps |
Specification data - Air-to-water heat pumps
Standards | |
Test requirements | To BS EN 14511 and BS EN 14825. |
Electrical safety | To BS EN 60335-2-40. |
Heat pump type | Exhaust. |
Coefficient of performance (minimum) | To EN 14825 (SCOP), Flow = 4.50 (average climate 35℃); Flow = 3.67 (average climate 55℃). |
Output | |
Heating | 1.16 kW to 5.37 kW.Guidance for specification option: Depending on airflow and compressor frequency. Consult with NIBE for full sizing guidance. |
Electrical supply type | Single phase.Guidance for specification option: 1 x 230 V. |
Refrigerant | R290. |
Energy rating | A+++. |
Overall sound power level | <49 dB(A). |
Hot water supply temperature | 70℃. Manufacturer guidanceHot water flow temperature. |
Sustainability data
Country of product manufacture | Sweden |
Recyclability | It is possible to recycle materials for all, or parts, of the product. The refrigerant contents of the product should always be recovered prior to processing. Recycling of the product can be done through fragmentation where the insulation material goes to energy recovery and metals for recycling. |
BIM objects
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
Literature
S735 Installer Handbook
S735 Sound Power Level
S735 User Handbook
NIBE SAM S42 - Supply Air Module for S735 EAHP Installer Handbook
Case studies
Luxury apartments benefit from NIBE Exhaust Air heat pumps
NIBE Exhaust Air Heat Pumps installed in large apartment complex