Danfoss Akva Lux II TDP-F Fact sheet

Akva Lux II TDP-F top/bottom connections

Flat station for single-family, semi-detached and terraced houses as well as flats

District heating flat station for direct heating and instantaneous domestic hot water. Designed for wall mounting, with variable connection possibilites.

Application

The Akva Lux II TDP-F is a flat station featuring high performance and simple operation. The Akva Lux II TDP-F is especially suitable for two-pipe systems. The Akva Lux II TDP-F is developed for flat systems supplied from a secondary connected district heating system, a block heating system or a centrally located boiler system in a block of flats.

District heating (DH)

The flat station is prefabricated with interconnecting components such as differential pressure controller, strainer, thermostatic bypass FJVR, sensor pockets and fitting piece for insertion of a heat meter.

Heating (HE)

The heating side is designed for direct generation of heat in a two-pipe system.The differential pressure controller sets the optimum operatingconditionsforradiatorthermostatic valves in order to enable individual temperature control in each room. In order to enable a time depending temperature control program the Akva Lux IITDP-F is equipped with a zone valve RA-C and electric actuator TWA-V. The Akva Lux II TDP-F comes standard with a terminalbox,towhichthezonevalve/thermal actuatorTWA-V are pre-wired.

VL.HE.T1.12 © Danfoss 05/2012

Domestic hot water (DHW)

The domestic hot water is prepared in the heat exchanger based on the flow principle. Supreme ease of operation is obtained via the combined hydraulic and thermostatic regulation of domestic hot water through the self-acting controller with integrated differential pressure controller - the PTC2 controller, thereby guaranteeing a constant domestic hot water temperature at all times.

The use of hydraulic regulation widely prevents the formation of lime scale and bacteria due to the fact, that the valve closes immediately after the tapping is ended. Furthermore the combined control function ensures that variations in temperature in the district heating network are reduced. A thermostatic bypass enables tapping of hot water without any delay, – ensuring the best possible efficiency and economy. The bypass can be mounted before or after heat meter. For registration of the cold water consumption the Akva Lux II TDP-F is equipped with a fitting piece for mounting of a cold water meter in the DCW inlet.

Domestic hot water circulation

The Akva Lux IITDP-F is equipped with bypass function as a standard, but it is prepared for DHW circulation. Equipment for DHW circulation is optional and must be ordered separately.

Construction

All pipes are made of stainless steel. The connections are made by nuts and gaskets. The Akva Lux II TDP-F is available as wall-mounted variant, and it offers variable and flexible connection possibilities, as connection of pipes can be established both in the top and bottom of the flat station. Optionalpipesetswith4and7pipescontributes to promote the station’s flexible connection possibilities.The Akva Lux IITDP-F can be delivered with white-lacquered steel cover.

FeATURES AND BENEFITS

•Flat station for district andcentralheating

•Direct heating,DHWheatingbasedon flow principle

•Capacity: 15kW HE, 55kW DHW

•Flow-compensatedtemperaturecontrol- ler with built-in Δp controller

•Variable and flexible connections possibilities

•Minimum space requiredfor installation

•Service-friendly

•Pipes and plate heatexchanger madeof stainless steel

•Minimizedrisk of limescale andbacteria formation

Akva Lux II TDP-F top/bottom connections

Circuit diagram - example

												2	Plate heat exchanger DHW	40	Danfoss FJVR thermostat for
												4	Differential pressure controller		bypass/circulation
												5	Strainer	52	Zone valve RA-C / TWA-V
												6	Non-return valve	59	Fitting piece for cold water meter
DHW												17	Air vent		3/4” x 110 mm
												23	Sensor pocket for heat meter	60	Terminal box
												24	Fitting piece for heat meter	-------------------------------------------------Incl: Cover, white
													3/4” x 110 mm
						38							PT°C2 controller

	<![if ! IE]> <![endif]>circ.		Terminal box
DCW
	<![if ! IE]> <![endif]>for
DH	<![if ! IE]> <![endif]>Connection		HE
Supply		Bypass	Supply
DH			HE
Return			Return

Technical parameters:

Nominalpressure(prim./sec.): PN10/PN10

Maxsupplytemperature:	90°C
DCWstaticpressure:	pmin	= 2 bar
Brazingmaterial(HEX):	Copper
Weight:
Excl.cover:	27 kg
Incl.cover:	30kg
Cover:	White-lacquered
	steel
Electrical supply:	230VAC +/-1%,50Hz
Dimensions (mm):
Withoutcover:	H572xW517xD197
Withcover:	H665xW520xD215

			466
							<![if ! IE]> <![endif]>500	<![if ! IE]> <![endif]>551
							<![if ! IE]> <![endif]>31
46	65	130	65	65	65	46	<![if ! IE]> <![endif]>21
35			482

89

197

Connections:

1.Domesticcoldwater(DCW)inlet

2.Domestic hot water (DHW)

3.Domestic cold water (DCW) outlet

4.District heating (DH) supply

5.Districtheating(DH)return

6.Heating(HE)supply

7.Heating (HE) return

Options:

•Whitecover

•Mountingofheatmeter

•Pipesetwith7pipes

•Pipesetwith4pipes

Connections size:
DH,HE,DHW,DCW:	G¾”(int.thread)
Circ:	R½”(ext.thread)

DHW: Capacity examples

	DHW	Plate heat	Temperature	Temperature	Flow rate	Flow rate	Pressure loss
	capacity		primary	secondary	primary	secondary	prim.
		exchanger
	kW		°C	°C	l/h	l/h	*kpa
	37	XB 06H-1 26	65/18.2	10/45	680	909	21
	45	XB 06H-1 26	65/19.2	10/45	845	1106	33
	37	XB 06H-1 40	65/17.9	10/45	676	909	18
	45	XB 06H-1 40	65/18.0	10/45	823	1106	26
	55	XB 06H-1 40	65/18.1	10/45	1009	1351	39
	37	XB 06H-1 26	65/21.5	10/50	731	796	25
	45	XB 06H-1 26	65/22.6	10/50	913	968	38
	37	XB 06H-1 40	65/20.8	10/50	720	796	20
	45	XB 06H-1 40	65/20.9	10/50	878	968	29
	55	XB 06H-1 40	65/21.2	10/50	1080	1183	44

* Heat meter not incl.

Heating: Capacity examples

	Heating	Heating	Pressure loss	Flow rate
		circuit Δt	Primary	Primary
	capacity
		°C	*kpa	l/h
	10	20	20	430
	10	30	9	287
	10	40	6	215
	15	20	43	645
	15	30	20	430
	15	40	12	323

* Heat meter not incl.

Danfoss Randall Ltd. · District Energy · Ampthill Road · DK-Bedford MK42 9ER

Tel. [phone] · Fax: [phone] · [e-mail] · www.danfoss-randall.co.dk

VL.HE.T1.12 © Danfoss 05/2011

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