Danfoss Akva Lux II Reno Eco Fact sheet

Fact Sheet

Akva Lux II Reno Eco flat station

For replacement of gas boilers in apartment buildings and multi-family houses. Direct heating and instantaneous domestic hot water.

Application

The Akva Lux II Reno Eco is a flat station for direct heating and a pressure and temperature controlled instantaneous domestic hot water heater for two-pipe systems, designed for decentralized heat distribution and is especially suitable for apartment buildings, where existing gas boilers should be replaced. The existing connections for DHW and DCW as well as supply and return of secondary heating circuits can be used without major changes, but it is recommended that the connections for the primary hot water flow and return are to lead through the chimney. Optionally the cold water supply can also be established in top of the unit.

District heating (DH)

The station is supplied with heating water from a heating center or a buffer storage, and it 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 differential pressure controller reduces the high, fluctuating pressure in the district heating network to a constant operating pressure that maintains a constant pressure in the heating circuit(s). The room temperature is adjusted solely using the radiator thermostats. To controll the room temperature the station can be supplied with zone valve/thermal actuator TWA-A, which enables connection to an electronic programmable room thermostat.

Domestic hot water (DHW)

The domestic hot water is prepared in the heat exchanger based on the flow principle and the temperature is regulated by the PTC2+P self-acting controller with integrated differential pressure controller. The pressure-controlled part allows primary and secondary side flow through the heat exchanger, only when hot water is tapped and blocks the flow immediately after completion of the tapping process.

The thermostatic part controls the domestic hot water temperature. Thanks to the quick-acting hydrauliccontroloftheheatexchanger,itislargely protected from the formation of lime scale and growth of bacteria. The integrated differential pressure controller compensates for variations in supply temperature and varying differential pressure and thereby ensures a constant domestic hot water temperature at all times. A thermostatic bypass enables tapping of hot water without any delay, – ensuring the best possible efficiency and economy. For registration of the cold water consumption the station is equipped with a fitting piece for mounting of a cold water meter in the DCW inlet.

Bypass

The station is equipped with bypass function as a standard.

Construction

All pipes are made of stainless steel. The connections are made by nuts and gaskets. The station can be supplied with a white-lacquered steel sheet cover for wall mounting.

FEATURES AND BENEFITS

FEATURES AND BENEFITS

••Flatstationforexhangeofexistinggas boilers

••Directheating,DHWheatingbasedon flowprinciple

••Withintegratedfreshwatersystemfor decentralizedDHWheating

••Capacity:15DCW/55kW DHW

••Compact,space-savingdesign

••Alsosuitableforlow-temperature systemswith55°Csupplyflow

••Innovative,energy-savingcontroller PTC2+Pincombinationwithhighper- formanceheatexchangerforon-demand waterheatingwithoutno-loadlosses

••Pipesandplateheatexchanger madeofstainlesssteel

••Minimizedriskoflimescaleandbacteria formation

••Withpipeinsulation

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CIRCUITSHALTPLANDIAGRAMBEISPIELEXAMPLE

																2	Plate heat exchanger DHW
																4	Differential pressure controller
																5	Strainer
																23	Sensor pocket M10 (internal thread)
DHW																38	PTC2+P controller
																46	RA-C DN 15 zone valve
																59	Fitting piece for heat meter (¾” x 110 mm)

DCW
Supply											HE
Primary											Supply
Return											HE
Primary											Return
Design specifications:				Dimensional sketch:						Connections:
Nominal pressure (prim/sec.):PN 10/10				5	6	7				1. Heating (HE) supply (bottom)
Max. supply temperature:		95 °C								2. Domestic hot water (DHW) (bottom)
Min. ΔP:		See capacity examples								3. Domestic cold water (DCW (bottom)
DCW static pressure:		pmin = 2 bar								4. Heating (HE) return (bottom)
Brazing material (HEX):		Copper								5. District heating (DH) supply (top)
Weight :										6. District heating (DH) return (top)
		22 kg		<![if ! IE]> <![endif]>809,5						7. Option: Domestic cold water supply (top)
incl. cover										Type				Code No.
Cover:		White-lacquered steel								Akva Lux II Reno Eco Type 1, w/ pipe insulation,				145B4054
										zone valve, Cover
Dimensions (mm):										Akva Lux II Reno Eco Type 2, w/ pipe insulation,				145B4055
Without cover:		H  809,5 ×W 470 ×T 146,9								zone valve, Cover
Mit Verkleidung:		H 1120 xW 480 xT 149								Akva Lux II Reno Eco Type 3, w/ pipe insulation,				145B4056
				1	2	3	4	44		zone valve, Cover
				65		65
Connections sizes:										Accessories				Code No.
						130			146,9
DH:		G ¾“ (ET)				470				Cover W 480 x D 150 x H 1120 mm				145H4282
DCW, DHW, HE:		G ¾“ (ET)
										Ball valve set for ECO 2 pcs. DVGW,
														145H4015
										4 pcs. heating (76mmx3/4”ET/IT)
										Actuator TWA-A NC 230 V for zone valve				088H3112
										Top connection DCW with fitting piece for				144B2420
										DCW meter 3/4” x 110 mm
DHW: Capacity examples, 10 °C/50 °C										Heating: Capacity examples
	DHW	Primary	Secondary	Pressure loss	Flow rate			Flow rate		Heiting	Heating circuit	Flow rate	Pressure loss
Type	Capacity	Supply	Supply	*primary	primary			secondary		Capacity	t	primary		*primary
	KW	[°C]	[°C]	[kPa]		[l/h]		[l/min]		kW	[° C]	[l/h]		[kPa]
XB 06H-1 26	35,0	65	22	21		690		11,5		10	20	430		41
	45,0	65	22	36		900		12,0		10	30	287		28
XB 06H-1 40	45,0	65	22	28		870		14,5		10	40	215		30
	55,0	65	21	43		1080		18,0		15	20	645		71
DHW: Capacity examples, 10 °C/50 °C										Heating: Capacity examples
XB06H+ 60	32,3	55	20	24		800		13,3		15	30	430		42
	41,0	55	21	40		1030		17,2		15	40	323		34
* w/o heat meter										* w/o heat meter

Danfoss Redan A/S · District Heating · Omega 7, Søften · DK-8382 Hinnerup · Denmark

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© Danfoss | Produced by Danfoss Redan | 2017.02

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