EXINDA FLEX 45 kW R290 Modular Air-to-Water Heat Pump


Capacity that fits the building.

Plan year-round hydronic comfort for smaller commercial buildings with EXINDA FLEX 45 kW R290 heat pump. Supply heating in winter and chilled water in summer, with a modular configuration that can grow with the project. A natural-refrigerant option for offices, hospitality buildings and commercial renovations.

Core Specifications

FBMBHT4B2E3
Core specifications for FBMBHT4B2E3
Nominal capacity and rated conditionHeating: 45 kW at 7/6°C outdoor DB/WB and 35°C leaving water. Cooling: 34 kW at 35/24°C outdoor DB/WB and 7°C leaving water.
Published capacity range12.8–47.3 kW heating; 10.8–36.2 kW cooling
Published electrical input range3.316–10.534 kW heating; 3.942–11.138 kW cooling
Published COP / EER rangeCOP 3.86–4.49; EER 2.74–3.25
RefrigerantR290; 3.5 kg charge; GWP stated as 3
Power supply and protection380–400 V / 50 Hz / 3 Ph; R, S, T, N and Ground; MCA 40 A; MOP 50 A
Published operating rangesAmbient −25 to 43°C; heating leaving water 35–60°C; cooling leaving water 7–27°C
Water circuit7.7 m³/h published flow; G 2 in. female-thread inlet and outlet
Sound pressure65 / 61 / 58 dB(A), Daytime Max / Rated / Low Noise; stated as converted at 1 m
Dimensions and weight1135 × 1035 × 2118 mm (L × W × H); net 400 kg. Shipping: 1195 × 1095 × 2197 mm; 450 kg.
CompressorDC inverter
Published control functionsStandby anti-freeze, demand-based defrost and cascade connection for up to eight units

Heating Performance

Published full-condition heating data at 55°C leaving-water temperature. Outdoor temperatures below are dry-bulb values.

Heating performance at 55 degrees Celsius leaving-water temperature
Outdoor air DBHeating capacityInput powerCOP
8°C43.086 kW14.529 kW2.97
2°C39.897 kW14.460 kW2.76
−12°C34.870 kW15.640 kW2.23
−25°C25.761 kW15.985 kW1.61

Technical Documents

Modular Heat Pump Chiller Selection Questions

Where does a two-pipe system fit best?

A two-pipe system suits buildings whose connected zones can share a heating or cooling mode. It supplies hot water in heating mode and chilled water in cooling mode.

Can it be used in a boiler upgrade?

Yes. It can provide electric hydronic heating and chilled-water cooling with suitable terminals. An existing boiler can remain as supplementary or backup heat in the system design.

How do I choose the capacity for my building?

Use the building’s heating and cooling loads and required water temperatures to select the unit capacity and number of modules.

What should I send to start a project discussion?

Share the location, building use and the capacity you are considering. EXINDA can help compare configurations and provide the technical package for the next design step.

Collaborez avec EXINDA

Fabricant mondial d’équipements CVC et fournisseur de solutions sur mesure

EXINDA est un fabricant mondial d’équipements CVC spécialisé dans les pompes à chaleur, les systèmes de ventilation et les solutions climatiques sur mesure pour les applications résidentielles et tertiaires.

Nous collaborons avec des distributeurs, des ingénieurs, des installateurs et des partenaires OEM dans le monde entier.

1. Distributeurs et revendeurs CVC
Nous accompagnons nos partenaires dans le monde entier avec des solutions fiables de pompes à chaleur et de ventilation.

2. Bureaux d’études et installateurs
Nous fournissons la documentation technique, une aide à la sélection des produits et un accompagnement des projets.

3. Partenaires OEM / ODM
Nous proposons des solutions CVC sur mesure, la fabrication en marque propre et un accompagnement du développement des produits.