Baxi AquaHeat Heat Interface Unit
Verified by manufacturer 2 days ago
AquaHeat HD/HWI 12/50
AquaHeat HD/HWI 12/50
Instantaneous hydraulic interface units.
Application
Suitable for commercial applications.
Description
The Baxi AquaHeat HI/HWI (Heating Indirect/Hot Water Indirect) provides a high-performance solution for meeting apartment heating and hot water needs for homes supplied by a heat network. The Baxi AquaHeat HD/HWI (Heating Direct/Hot Water Indirect) provides an alternative highly efficient, low cost solution.
Features and benefits:
- Multiple outputs - range of heating outputs from 4 kW to 60 kW and domestic hot water outputs from 18 kW to 57 kW.
- Easy installation - optional first fix rail with in-built filling loop and stand-off bracket to allow for installation with various primary and tertiary pipework. Pre-wired with heat meter and Mercurius remote monitoring module.
- Highly efficient - ultra-fast acting, fully modulating PICV perfectly matches energy supply to instantaneous demand and high performance insulation providing very low heat losses.
- Remote monitoring and control - mercurius platform for remote monitoring to reduce site on time and giving visibility of errors to improve first-time fix rates.
- Reliable - Water Regulation WRAS and Reg4 approved. BESA 2023 V3 compliant in preparation for HNTAS market regulation.
- Covered with a five year parts and labour warranty.
- BESA 2023 V3 accredited - high performing Indirect HIU with eight best practice passes. The first BESA 2023 certified Direct HIU with best practice Heat Loss performance.
General information
Color | Black Grey |
Material | Expanded polypropylene (EPP) |
Shape | Rectangle |
Length | 260 mm 250 mm |
Width | 540 mm 300 mm |
Height | 750 mm 544 mm |
Warranty description | Five year |
Uniclass | |
CAWS | S90/130 Instantaneous hot water supply S90/230 Instantaneous hot water supply |
SKU Code | 7892283 |
Specification data - Heat interface units
Classification data | |
Type | HD/ HWI – direct heating with instantaneous hot water. |
Standards | |
Thermal performance | Tested to BESA Technical Standard for UK HIU Test Regime. |
Third-party certification | WRAS Water Regulation 4-certified. BESA certificate of registration. |
HIU duty | |
Space heating | Refer to equipment schedules. |
Domestic hot water | Refer to equipment schedules. |
Space heating supply temperature | 15-90°C. |
Space heating return temperature | 15-90°C. |
Space heating flow rate | 0.26 m³/hr. |
Hot water supply temperature | 40–65℃. |
Volume-weighted average return temperature (VWART) | 27°C (70°C DH temperature). 32°C (55°C DH temperature). Manufacturer guidanceOverall VWART. |
Standing losses | 0.61 kWh/day (70°C DH temperature). 0.69 kWh/day (55°C DH temperature). |
Network duty | |
Network flow temperature | Refer to equipment schedules. |
Network return temperature | Refer to equipment schedules. |
Network flow rate | 0.9 m³/hr (DHW mode). 0.5 m³/hr (space heating mode). |
Network pressure drop (maximum) | 16 kPa. Manufacturer guidanceMinimum primary pressure drop required at maximum primary flow rate (DHW mode). |
Network pressure differential (maximum) | 600 kPa. |
Hydraulic components | |
Domestic hot water control valve | PICV. |
Domestic hot water heat exchanger | Asymmetric plate heat exchanger. |
Internal pipework | Manufacturer guidanceConsult manufacturer for details and insert requirements. |
Controls and metering | |
HIU controller | MODBus interface for remote monitoring. |
Meter | |
Meter type | Axioma Qalcosonic E3 Heat Meter. Guidance for specification option: Delivered as standard. No heat meter. Guidance for specification option: 110 mm x ¾” spool piece provided. |
Meter display location | Front-facing – within HIU casing. |
Power | Manufacturer guidanceConsult manufacturer for details and insert requirements. |
Communication protocol | M-Bus. Wireless M-Bus. |
Prepayment shut-off valve | Integrated within HIU. |
Electrical supply | |
Rated operational current | 5 A. |
Rated operational voltage | 230 V a.c. at 50 Hz single-phase. |
Accessories | Not required. First Fix Rail with flushing bypass HD/HWI series - 7898304. Mercurius - 7867481. |
Insulation | Expanded polypropylene (EPP). |
Casing | Manufacturer guidanceConsult manufacturer for details and insert requirements or omit. |
Sustainability data
Contains Red List materials | No |
Country of product manufacture | United Kingdom |
Manufacturing plant location | |
Material | Expanded polypropylene (EPP) |
Expected Life | 20 year |