HIU compactfloor heating, compact residential unit, hydraulic interface unit for
hot water production by continuous flow principle and transfer of heat to low-
temperature heating. Installation as flush mounted version with flush box or as
surface-mounted version with cover. The pipe connection to the residential unit
hydraulic interface unit is created using a patented installation system with pre-
installation bracket. Option to connect the pre-installation bracket from the floor.
Consisting of:
• Copper-soldered asymmetrical stainless steel plate heat exchanger
•HERZ pressure and temperature controller for central regulation of the hot water
temperature
• Control valve with return temperature limiter for low heating return temperature
• Constant readiness for hot water production even in summer, operating mode
due to temperature-regulated bypass switching, permanently set to 45°C
•Cold water meter adapter 80 mm – G 3/4" made of dezincification-resistant brass,
also suitable for continuous operation
• Heat meter adapter 110 mm – G 3/4" made of dezincification-resistant brass, also
suitable for continuous operation
• Strainer with fine mesh in primary supply line
• Strainer with fine mesh in secondary return line
•Fixed value control with setting range 20°C – 50°C consisting of zone valve,
thermostat with contact sensor, safety thermostat and circulating pump
• Differential pressure controller with integrated control valve, shut off
valve and zone valve in the secondary circuit
• Differential pressure controller (25 - 60 kPa) in the primary circuit
• Empty weight module: 15 kg
• Connection: Male thread 3/4“ flat sealing
• Nominal pressure: 10 bar
• Max. supply temp. HIU compactUFH: 70 °C
• Max. supply temperature HIU compactUFH with TSR*: 85 °C
• Min. flow pressure mains cold water: 2,8 bar
• Circulation pump space heating: Wilo Para RS 15/6 (SCU) or similar
• Circulation pump domestic hot water circulation: Wilo Star-Z NOVA or similar
11 l/min
• HIU compactUFH without TSR*: 1402129
• HIU compactUFH with TSR*: 1402126
• HIU compactUFH with TSR*, pipes insulated: 1402132
• Domestic hot water circulation set: 1402473
• Flush cabinet short, 90 mm deep: 1402447
• Flush cabinet short,150 mm deep
(in combination with circulation set): 1402163
• Front frame with door short: 1402448
• Flush cabinet long, stainless steel distributor connection,
150 mm deep: 1402161
• Front frame with door long: 1402162
• Cover HIU compactUFH: 1402409
• Pre-assembly strip HIU compactUFH: 1402449
• Adapter piece for heat meter sensor M 10 x 1 mm: 1402246