LA 17TU

High-efficiency air-to-water heat pump with two performance levels

LA 17TU

Heat pump for heating purposes for outdoor installation, with wall-mounted WPM EconPlus heat pump manager and two compressors for output reduction when operating at partial load. Sound-optimised through the use of slow-running 'owl's wing' ventilators with a low natural sounding noise, an encapsulated compressor housing with free-swinging compressor baseplate for solid-borne sound insulation. High coefficients of performance (COP) through high-performance evaporator and compliance with the requirements of EN 14511 for larger volume flows on the heat consumption side. High operational safety through sensor monitoring of the refrigeration circuit for energy-efficient defrosting; integrated thermal energy metering (display of the thermal energy volume for heating and domestic hot water preparation on the WPM EconPlus heat pump manager). Access for service work on the outlet side; the minimum clearances must be observed for installation close to walls. Universal design with two compressors for modulating operation, optional domestic hot water preparation and flexible expansion options for:

Bivalent or bivalent-renewable operating mode

Distribution systems with unmixed and mixed heating circuits

Soft starter, integrated flow and return sensors; external sensor (standard NTC-2) included in the scope of supply. Electrical connection cable EVL ..U between heat pump and heat pump manager must be ordered separately.

Information on leak tests and refrigerant quantities can be found here.

HWK 332 Econ

Hydro Tower with WPM EconPlus

The Hydro Tower with integrated WPM EconPlus regulation enables the fast and simple connection of a high-efficiency air-to-water heat pump installed outdoors to a heating system with an unmixed heating circuit. The following components are mounted in a space-saving way and wired ready to use.

Switchable pipe heater (2/4/6 kW) for supplementary heating

Buffer tank (100 l) with installation option for an additional immersion heater (up to CTHK 634)

Domestic hot water cylinder 300 l with 3.2 m² tube heat exchanger and 1.5 kW flange heater for thermal disinfection

Electronically regulated circulating pump (energy efficiency class A) wired ready to use for unmixed heating circuits (consumer circuit)

Unregulated auxiliary circulating pump for generator circuit and domestic hot water loading pump

The hydraulic isolation of the generator circuit and the consumer circuit is carried out via two differential pressureless manifolds (bypass pipes), which are each fitted with a check valve.

To reduce the run times, the unregulated auxiliary circulating pump in the generator circuit is only operated when the compressor is running and when there is a risk of frost. The uniform flow through the buffer tank connected in series extends the runtimes of the compressor and ensures the required heating water flow rate in all operating modes. Access for service work from the front, no minimum clearances required on the sides. Left and right-side wall installation is possible.

Seal of approval EHPA

Seal of approval

Seal of approval MCS

Microgeneration Certification Scheme - MCS

Seal of approval

Technical data

High-efficiency air-to-water heat pump with two performance levels (Low temperature)
Order reference		LA 17TU
Casing colour		White aluminium (similar to RAL 9006)
Max. flow temperature		58 °C
Lower operating limit heat source (heating operation) / Upper operating limit heat source (heating operation)		-25 to 35 °C
Heat output with 1 compressor / COP A7/W35*		5,4 kW / 3
Heat output with 2 compressor / COP A7/W35*		10,3 kW / 2,9
Heat output 1 compressor / COP A2/W35*		8,2 kW / 3,8
Heat output 2 compressors at A2/W35 / COP A2/W35*		14,6 kW / 3,7
Heat output with 1 compressor / COP A7/W35*		10 kW / 4,5
Heat output with 2 compressor / COP A7/W35*		19,6 kW / 4,4
Heat output with 1 compressor / COP A10/W35*		10,5 kW / 4,9
Heat output with 2 compressor / COP A10/W35*		20,5 kW / 4,8
Nominal power consumption according to EN 14511 at A2/W35		4 kW
Sound power level device		65 dB (A)
Sound pressure level in 10 m		37 dB (A)
Refrigerant / Amount of refrigerant		R404A / 8,2 kg
Max. heating water flow rate / Pressure drop		3,4 m³/h / 9900 Pa
Heat source flow (min.)		5500 m³/h
Dimensions (W x H x D)**		1600 x 1940 x 952 mm
Weight		436 kg
Connection voltage		3/N/PE ~400 V, 50 Hz
Starting current with soft starter		17 A
Fuse protection		C 16 A
Type of defrosting		Reverse circulation
Connection heating		1 ¼ inch
Seal of approval EHPA (valid until)		Yes / 15.10.2012
Seal of approval MCS (valid until)		Yes