Heat Interface Unit HIU 1 - wattswater.euwattswater.eu/upload/iblock/3e1/hiu1_ts_de_w_uk.pdf ·...
Transcript of Heat Interface Unit HIU 1 - wattswater.euwattswater.eu/upload/iblock/3e1/hiu1_ts_de_w_uk.pdf ·...
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Technical Data Sheet
Heat Interface Unit HIU 1for hot water generation and heat distribution
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Hydraulic performance data HTW/HTWZ/TWZ 12Outflow temperature (domestic water) 45 °C Tap flow rate (domestic water) 12 l/min DHW heating 10 to 45 °C Primary supply line temp. 65 °C Primary return line temp. 13 °C Primary flow rate 8 l/min Domestic water temp. (cold) 9 °C Max. operating pressure 10 bar (PN 10) Max. ambient temperature 60 °C Max. operating temperature 90 °C Differential pressure 200 mbar
Media Water or water-glycol mixes as per VDI (Association of German Engineers) 2035 / ÖNORM (Austrian standard) 5195
Actuator (only HTW/HTWZ)
Voltage 230 V; +10…-20 %; 50/60 HzPower consumption in operation 2.5 WPower consumption at end positions <1 WActuating force 100 NElectrical protection class IP 54Ambient temperature 0…60 °CDimensionsW×H×D without EPP insulation shell 410 x 515 x 215 mmW×H×D with EPP insulation shell 490 x 610 x 275 mmWeight 17.7 kgWeight, including packaging 19.3 kgPiping connectionsInterface unit ¾" male thread, flat sealingMeter connections (only HTWZ/TWZ)
Heat meter connection Adapter, 110 mm G ¾, with reducing adapter to connect sensor G ½ (direct immersion sensor)
Cold water meter connection Adapter, 110 mm G ¾MaterialsPipes Stainless steel Ø20 mm & Ø18 mmFittings Brass Ms 58 (CW617N) Gaskets AFM34/2 and EPDM Insulation EPP Plate heat exchanger EN 1.4404 stainless steel/copper (solder) | optional: stainless steel/stainless steel (solder)Water hammer resistor (optional) Copper body, polypropylene piston, lead-free brass threaded connector, EPDM O-ring
DescriptionWatts Industries Heat Interface Unit HIU 1 HTW 12 for transferring heat from local or district heating networks to heating and domestic hot water systems in single-family homes, apartment buildings or terrace housing. Indirect, hygienic domestic hot water generation with plate heat exchanger. Direct connection to heating circuit, priority circuit for domestic hot water generation.
Heat Interface Unit HIU 1Compact, ready-to-fit design with sturdy wall bracket and EPP insulation shell as per energy saving regulations. Outflow temperature freely adjustable between 20 and 70 °C.
For operation in closed local or district heating networks with non-aggressive media, such as water or water-glycol mixes as per VDI (Association of German Engineers) 2035/ÖNORM (Austrian standard) 5195. Certified to in-house standard WI10077140N. All connections ¾” male thread, flat sealing.
Type Part no. Description
HIU 1 HTW 10077140 Hot water generation and heat distributionHIU 1 HTWZ 10079232 Hot water generation and heat distribution, heat meter fitting pieces HIU 1 TWZ 10079233 Hot water generation, heat meter fitting pieces
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HIU
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HIU
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Heating network
Return lineheating circuit
Cold water outlet
Domestic hot water
Supply line heating circuit
Primary supply line
Cold water inlet
Primary return line Strainer Water hammer resistor (optional) Membrane regulator Measuring point for membrane regulator Thermostatic valve Balancing valve Actuator Heat exchanger Flow switch Zone valve
Bleeder
Adapters for heat meter installation (only HTWZ/TWZ)
Construction
OperationThe Heat Interface Unit HIU 1 uses the heat from local or district heating networks for hygienic domestic hot water generation with a DWH outflow rate of 12 l/min. A plate heat exchanger separates the heating network circuit from the hot and cold domestic water. Available in three functional variants:
HTW: for hot drinking water generation and heating (part no. 10077140)
HTWZ: for hot drinking water generation and heating, pre-fittedfor heat meter installation (part no. 10079232)
TWZ: for hot drinking water generation, pre-fitted for heat meter installation (part no. 10079232)
The Heat Interface Unit HIU is designed in such a way that the domestic hot water generation takes priority over the heating circuit. When water is being drawn from a tap, a flow switch activates an actuator which closes the heating line temporarily. This ensures that the required domestic water temperature (adjustable using the thermostatic valve) is reached as quickly as possible. A circulation bridge may be needed to reach the pre-set domestic hot water temperature rapidly in standby mode (heating off). The circulation bridge is to be provided by the customer.
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© 2017 Watts
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410 mm 490 mm
515 mm 610 mm
215 mm 275 mm
Watts Industries Deutschland GmbHGodramsteiner Hauptstr 167 • 76829 Landau • Germany
Tel. +49 6341 965 60 • Fax +49 (0) 6341 9656 [email protected] • www.wattswater.eu • www.wattswater.de
The descriptions and photographs contained in this product specification sheet are supplied by way of information only and are not binding.
Watts Industries reserves the right to carry out any technical and design improvements to its products without prior notice. Warranty: All sales and contracts for sale are expressly
conditioned on the buyer’s assent to Watts terms and conditions found on its website at www.wattsindustries.com. Watts hereby objects to any term, different from or additional to Watts
terms, contained in any buyer communication in any form, unless agreed to in a writing signed by an officer of Watts.
HIU1-TS-DE-W-UK-10-17-Rev.2
Charts
Overall dimensions
Specification textWatts Industries heat interface unit HIU 1 for trans ferring heat from local or district heating networks to heating and domestic hot water systems in single-family homes, apartment buildings or terrace housing. Available in three functional variants: for hot drinking water generation and heating (HTW); additionally pre-fitted for heat meter installation (HTWZ); without heating circuit function (TWZ).Indirect, hygienic preparation of domestic hot water using a plate heat exchanger; DWH outflow rate of 12 l/min. Direct connection to heating circuit (only HTW/HTWZ), priority circuit for domestic hot water generation. Compact, ready-to-fit design with sturdy wall bracket and EPP insulation shell as per energy saving regulations. Outflow temperature freely adjustable between 20 and 70 °C. For operation in closed local or district heating networks with non-aggressive media, such as water or water-glycol mixes as per VDI (Association of German Engineers) 2035/ÖNORM (Austrian standard) 5195. Certified to in-house standard WI10077140N. All connections ¾" male thread, flat sealing. Consists of:• Stainless steel heat exchanger, vertical installation (low risk of limescale)• Flow switch and actuator for drinking water priority circuit• Membrane regulator to maintain the differential pressure when taps are used• Thermostatic valve to adjust the domestic hot water temperature• Zone valve• Strainer• Water hammer resistor (optional)• Balancing valve• Wall bracket• EPP insulation shell as per energy saving regulations
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Tap flow rate [l/h] Tap flow rate [l/h]
Max. outflow temperature as function of tap flow rateat 65 °C primary supply temperature
Primary flow rate as function of tap flow rateat 65 °C primary supply temperature