Danfoss Akva Vita II TDP-F Fact sheet

Fact sheet

Akva Vita II TDP-F

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

Application

The Akva Vita II TDP-F is a flat station featuring high performance and simple operation. The Akva Vita II TDP-F is especially suitable for two-pipe systems. The Akva Vita II TDP-F is developed for flat systems supplied from a secondary connected district heating sy-stem, a block heating system or a centrally located boiler system in a block of flats. The Akva Vita II TDP-F is available as built-in variant with a recess box or as wall-mounted variant and is prepared for implementation with the Danfoss Redan distribution systems for floor heating or radiator heating.

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 ge-ne- ration of heat in a two-pipe system.The differential pressure controller sets the optimum operating conditions for radiator thermostatic valves in order to enable individual temperature control in each room. In order to enable a time depending temperature

control program the Akva Vita II TDP-F can be equipped with a zone valve RA-C and electric actuator TWA-A. A return temperature limiter, typeFJVR,forautomaticregulationofthereturn temperature from the radiators or the floor heating system can be mounted (not part of the delivery).

Domestichotwater(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+ P 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. For regi-stration of the cold water consumption the Akva Vita 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 Vita II TDP-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 AkvaVita IITDP-F can be deli-ve- red with white-lacquered steel cover for recess mounting or for wall mounting.

FEATURES AND BENEFITS

•Flat station for district heating

•Direct heating, DHW heating based on flow principle

•Capacity: 15 kW HE, 41 kW DHW

•Minimum space required for installation built-in or wallmounted variant

•Service-friendly

•Pipes and plate heat exchanger made of stainless steel

•Minimized risk of lime scale and bacteria formation

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CIRCUIT DIAGRAM - EXAMPLE

			2	Plate heat exchanger DHW	38	PM2+P controller
			4	Differential pressure controller	40	Danfoss FJVR thermostat for
				AVPL with changeable setting		bypass/circulation
			5	Strainer	60	Fitting piece for cold water meter
			6	Non-return valve		3/4” x 110 mm
			17	Air vent	-------------------------------------------------
DHW			23	Sensor pocket for heat meter	Options:
			24 Fitting piece for heat meter		7	Ball valve
				3/4” x 110 mm	7A	Ball valve for circulation
					40A	Connection for circulation
DCW					52	Zone valve + actuator
					53	Room thermostat Danfoss
			(Option: Room thermostat)
DCW					63	Safety valve
					69	Return temperature limiter FJVR
		Connection for circ.	Circ.
			(Option)
	Circ.				HE
DH
Supply			Bypass		Supply
			(Standard)
DH					HE
Return					Return

Design specifications:

Nominal pressure (prim/sec.): PN 10 / PN 10

Max. supply temperature:	90 ºC
DCW static pressure:	pmin = 2.0 bar
Brazing material (HEX):	Copper
Weight excl. cover:	25 kg
Cover:	White-lacquered
	steel
Electrical supply:	230V AC
Dimensions (mm):
Without cover:	H 572 xW 458 x D 150
Connections size:
DH, HE, DHW, DCW:	G ¾” (int. thread)
Circ:	R½” (ext. thread)

40

350

50

18

Code No‘s:

440

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AkvaVita IITDP-F w/o cover, with

Code no.:

heat exchanger type (DHW):

XB 06H-1 26

004U8597

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Options:

• White cover for wall-mounted variant, closed or open at

the bottom or white recess box for built-in variant

• Return temperature limiter Danfoss FJVR

25

65

65

65

65

65

65

25

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44

•

¾ ball valves for unit

Connections:

•

Insulation

• Set with safety valve 6 bar and non-return valve

1. Domestic cold water (DCW) inlet

• Ball valve ½“ for circulation 48 mm

2. Domestic hot water (DHW)

• Thermometer - 120° C for mounting in ball valve

3. Domestic cold water (DCW) outlet

• Zone valve RA-C / ActuatorTWA-A

4. District heating (DH) supply

• Circulation set with or without pump

5. District heating (DH) return

•

Room thermostats

6. Heating (HE) supply

7. Heating (HE) return

DHW: Capacity examples, 5 °C/60 °C

	Capacity	Plate heat	Supply flow	Return flow	DHW	Pressure loss	Flow rate
			Primary	Primary	tap load	Primary	Primary
	kW	exchanger
			°C	°C	l/min	bar	l/h
	41.0	XB 06H-1 26	65	31.7	10.60	0.49	1060
	41.0	XB 06H-1 26	70	24.0	10.60	0.27	770
	41.0	XB 06H-1 26	80	17.0	10.60	0.15	560
	41.0	XB 06H-1 26	90	13.0	10.60	0.10	460

* Heat meter not incl.

Heating: Capacity examples

	Heating	Heating	Pressure loss	Flow rate
		circuit Δt	Primary	Primary
	capacity
		°C	*bar	l/h
	5	15	0.22	680
	10	15	0.54	880
	15	15	1.04	1080
	5	20	0.17	630
	10	20	0.35	780
	10	30	0.22	680
	15	30	0.35	780
	20	30	0.54	880
	20	40	0.35	780

Calculated at 70% heating flow + 41.0 kW DHW 80/17-5/60.

© Danfoss | DHS-SRMT/ PL | 2018 . 02

VL.HE.Y2.02