EXINDA FLEX 40 Ton R454B Four-Pipe Modular Heat Pump Chiller
Heating and cooling at the same time, from one plant.
In schools, hotels and offices, interior rooms need cooling while the perimeter still needs heat. EXINDA FLEX four-pipe supplies hot water and chilled water together, moving the heat it takes out of the chilled-water loop into the hot-water loop: 34 tons of cooling and 48 tons of heating from 35.2 kW. It heats down to −13°F, runs on 208, 460 or 575 V, and cascades up to 16 units.
Core Specifications
| Model | FBMBHTF4B2C5 (575 V) |
| Product type | Air-cooled four-pipe heat pump chiller; cooling, heating and simultaneous cooling/heating |
| Refrigerant circuit | R-454B (A2L); 2 circuits; 25.8 lb charge per circuit |
| Compressors / capacity control | 2 × DC inverter EVI scroll; variable-speed inverter control |
| Air-side section | Copper tube / aluminum plate fin coil; 2 × EC inverter axial fans; 26,600 CFM total airflow |
| Cooling ambient range | −4°F to 110°F |
| Heating ambient range | −13°F to 100°F |
| Maximum leaving hot water | 140°F at ambient above −4°F; 130°F from −13°F to −4°F |
| Minimum leaving chilled water | 39°F with water; down to 5°F with 40% glycol |
| Simultaneous limit | 140°F leaving hot water with 41°F leaving chilled water |
| Water-side heat exchangers / connections | Plate heat exchangers; 2-1/2 in. Victaulic connections |
| Power supply | 208 / 460 / 575 V · 3 Ph · 60 Hz |
| Electrical · 575 V | MCA 89.3 A; MOP 112 A; RLA 60 A; FLA 71.4 A; recommended breaker 100 A |
| Dimensions (L × W × H) | 89 × 53-1/8 × 95-9/16 in |
| Weight | 2,780 lb net; 3,000 lb shipping |
| Sound | 86 dB(A) sound power level, cooling |
| Cascade control | Up to 16 units |
| Certification | CSA certified. AHRI certification in progress. |
Cooling, Heating & Simultaneous Performance
| Mode | Ambient | Water condition | Capacity | Input power | Efficiency |
|---|---|---|---|---|---|
| Cooling | 95°F | Chilled water EWT/LWT 54/44°F | 35 Ton | 50.7 kW | EER 8.3 Btu/W |
| Heating | DB/WB 47/43°F | Hot water LWT 105°F | 38 Ton | 45.3 kW | COP 2.96 |
| Simultaneous cooling + heating | — | Chilled water LWT 44°F; hot water EWT/LWT 95/105°F | 34 Ton cooling + 48 Ton heating | 35.2 kW | Combined COP 8.2 |
How this plays out in a school or hotel: four-pipe heat pump chiller for boiler and chiller replacement.
Technical Documents
FLEX Four-Pipe Selection Questions
Can a four-pipe heat pump replace both the boiler and the chiller?
Yes. The unit supplies hot water and chilled water from separate circuits at the same time, and heats down to −13°F ambient. Up to 16 units cascade for larger plants.
What hot water temperature is available in a Canadian winter?
140°F at ambient above −4°F, and 130°F from −13°F to −4°F.
Is it available in 575 V?
Yes. The unit is available in 208 V, 460 V and 575 V, three-phase, 60 Hz.
Can I connect the unit to an existing two-pipe distribution system?
A two-pipe loop runs in one mode at a time. To heat and cool different zones at once, the building needs separate hot- and chilled-water distribution.
Can I keep the existing boiler during a phased upgrade?
Yes. A retained boiler can provide supplementary or backup heat. Define setpoints and changeover sequence as part of the plant design.
Collabora con EXINDA
Produttore HVAC globale e fornitore di soluzioni HVAC personalizzate
EXINDA è un produttore HVAC globale specializzato in pompe di calore, sistemi di ventilazione e soluzioni climatiche personalizzate per applicazioni residenziali e commerciali.
Collaboriamo con distributori, ingegneri, installatori e partner OEM in tutto il mondo.
1. Distributori e rivenditori HVAC
Supportiamo i partner in tutto il mondo con soluzioni affidabili per pompe di calore e ventilazione.
2. Società di ingegneria e installatori
Forniamo documentazione tecnica, assistenza nella selezione dei prodotti e supporto ai progetti.
3. Partner OEM / ODM
Offriamo soluzioni HVAC personalizzate, produzione a marchio privato e supporto allo sviluppo dei prodotti.