building. climate. excellence.
building. climate. excellence.
A2RXE HIU’s are for use where instantaneous hot water preparation is required combined with space heating output from one unit.
Designed to suit projects where minimal space combined with high output is required. Can be supplied in a range of output configurations, domestic hot water, space heating and heat meter set-ups. Independent and precise control of each Plate Heat Exchanger (PHE) to optimise Primary Return Temperature (VART). Latest, high efficiency low approach temperature, compact Plate Heat Exchangers are used. Customised, fully insulated case minimising heat losses to the surrounding area and intensifying the heat transfer to the dwelling. Highly visible status light indicating, without removing the case, the current readiness of the HIU. Weekly auto pasteurisation of the hot water side of the unit when idle, minimising the risk of legionella. Default comfort setting keep warm function ensuring energy consumption to maintain the HIU in a state of readiness is optimised.
20kW standard unit | ||
Primary Duty | Min. / Max. flow temperature (t11) | 65 °C / 90 °C |
- | Nominal flow temperature (t11) | 75 °C |
- | Flowrate (q1, at nominal flow temperature) | 0.267 l/s (960 l/h) at max. output |
Pressure | Pressure rating | PN 16 |
- | Min. differential pressure (Δp1) | 50 kPa (0.5 bar), at nominal primary flow temperature |
- | Max. differential pressure (Δp1) | 250 kPa (2.5 bar), or 450 kPa (4.5 bar) with additional DPCV |
Cold water mains | Min. (max.) pressure (Δp3) | 1 bar (PN 10) |
Secondary Duty: Domestic Hot Water | Nominal Heat Transfer Capacity (P3) | 63 kW |
- | Max. flowrate (q3) | 20 l/min (0.333 l/s) |
- | Fluid Temperature in (t31) | 10 °C |
- | Fluid Temperature out (t32) | 55 °C |
Secondary Duty: Heating | Heat Transfer Capacity (P2) | 18 kW 30K ΔT (10 kW 20K ΔT), at nominal primary flow temperature |
- | Fluid Temperature flow (t22) | Selectable: 40 ºC / 70 ºC (at nominal primary flow temperature) |
- | Fluid Temperature return (t21) | Depending on radiators and setup |
- | Maximum secondary pressure | PN 10 (restricted to 3 bar by over pressure relief valve) |
Connections | All external connections | 3⁄4" |
Primary and Secondary Fittings | Primary control valves | 2 port diverter valve (MUT valve) |
- | Strainer | In primary flow and secondary return |
- | Heat Meter | Prefitted - Rossweiner HeatSonic, battery powered, M-Bus interface |
- | Circulation Pump | Grundfos, 6m, in secondary heating circuit |
- | Overpressure relief valve | 3 bar, in secondary heating circuit |
- | Shut off valve (optional) | Shut off valve for pre-payment systems (230V~, 50Hz) |
- | DPCV (optional) | Differential pressure control valve (450 kPa max. dp) |
- | Hot water return (optional) | Hot water circulation (incl. pump, non return valve and ball valve) |
Flamco has been involved in the development, production and sale of high-quality components for use in HVAC systems since 1956. It is part of the stocklisted Aalberts NV, instituted in 1975. Along with Comap, which helps manage water and energy through its thermal and sanitary products that increase comfort in buildings, the Aalberts hydronic flow control business unit was constituted. Stronger together, Flamco and Comap will continue to build mission critical technologies to manage heating and cooling humanly with better financial and environmental efficacy. From source to emitter we partner with our customers to engineer seamless energy efficient hydronic systems for their building requirements.
comap.aalberts-hfc.com | aalberts-hfc.com
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