Danfoss Akva Vita TDP Shaft Fact sheet
Fact Sheet
Akva Vita TDP Shaft
Direct flat station for mounting in shaft in a dwelling house
Application
The Akva Vita TDP Shaft is an instantaneous water heater featuring high performance and simple operation. The Akva Vita TDP Shaftisdevelopedforflatsystemssupplied from a scondary connected district heating system, a block heating system or a centrally located boiler system in a dwelling house.
Districtheating(DH)
The flat station is prefabricated with interconnecting components such as differential pressure control, upright positioned fitting piece for insertion of a heat meter and DCW meter, sensor pockets as well as strainer, thermometer and ball valves.
Heating(HE)
The heating side is designed for direct ge-neration of heat in a 2-pipe system. The differential pressure control sets the optimum operation conditions for radiator thermostatic valves, in order to enable individual temperature control in each room.Inordertoenableatime-depending temperaturecontrolprogram,azonevalve with actuator and a room thermostat can be included as an option..
Domestichotwater(DHW)
The domestic hot water is prepared in the heat exchanger based on the flow principle. Supreme ease of operation is obtained via hydraulic regulation of the domestic hot water through a proportional valve - the PM controller, thereby guaranteeing a constant domestic water temperature at all times.The use of hydraulic regulation largely prevents the formation of lime scale and bacteria, due to the fact, that the valve closes immediately when tapping ends and thereby the heat exchanger is not constantly kept warm. A thermostatic by-pass enables tapping of hot water without any delay - ensuring the best possibleefficiencyandeconomy.
The Akva Vita TDP Shaft is equipped with by-pass function as standard, but it is also prepared for DHW circulation. Switching to DHW circulation is possible from a constructional point of view, requiring no extra components.
FEATURES AND BENEFITS
•Flat station for district heating
•Direct heating, DHW heating based on the flow principle
•Capacity: 15 kW heating 35 kW domestic hot water
•Maximum hot-water comfort supply
•Minimum space required for installation
•Pipes and plate heat exchanger made of stainless steel
•Minimized risk of lime scale and bacteria formation
Mounting
Please note the application-specific dimensions, which makes the Akva Vita TDP Shaft especially suitable for mounting in a technique shaft. Akva Vita TDP Shaft can be mounted directly on the wall or it can be mounted by use of the enclosed wall brackets. Mounting with wall brackets generates a distance of 100 mm betweenflatstationandwallforthepiping arrangements.
Construction
All pipes are made of stainless steel. The connectionsaremadebynutsandgaskets.
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CIRCUIT DIAGRAM – EXAMPLE
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2 |
Plate heat exchanger DHW |
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4 |
Differential pressure controller |
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5 |
Strainer |
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7 |
Ball valve |
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13 |
Thermometer |
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Air valve |
DHW |
23 |
Sensor pocket for heat meter ½” |
24 |
Fitting piece for heat meter ¾” x 110 mm |
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38 |
PM controller |
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40 |
Danfoss FJVR for by-pass/circulation |
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59 |
Fitting piece for DCW meter ¾” x 110 mm |
DCW |
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DCW |
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DH |
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HE |
Supply |
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Supply |
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(By-pass) |
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DH |
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HE |
Return |
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Return |
Technical parameters:
Nominal pressure:
DH supply temperature: DCW static pressure: Chloride compounds:
Weight incl. cover:
(incl. packing)
Dimensions (mm):
H715 x W295 x D185
Pipes dimensions (mm):
Primary:
Secundary:
Connections sizes:
DH + DCW + DHW: HE + optional circ.:
PN 10
Tmax = 100 °C pmin = 2,5 bar Max. 300 mg/l
20,0 kg
<![if ! IE]><![endif]>185
Dia. 18
Dia. 18
G ¾” (IT)
G ¾” (IT)
Connections:
ADomestic cold water (DCW) outlet
BDomestic hot water (DHW)
CHeating (HE) supply
DHeating (HE) return
EDomestic cold water (DCW) inlet
FDistrict heating (DH) supply
GCirculation
HDistrict heating (DH) return
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Top view |
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A |
B |
C |
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D |
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G |
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H |
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F |
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35 |
70 |
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70 |
35 |
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290 |
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295 |
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Options:
•Ball valve G ¾” (ext. thread)
•Ball valve with pocket for pressure for pressure/thermometer gauge G ¾” (ext. thread)
•Ball valve with pocket for pressure for pressure/thermometer gauge G ¾” (int. thread)
•Thermometer Ø35 mm
•Connection pipe for circulation
•Zone valve VMT 15/8 with TWA-V/230 V AC
•Room thermostat TP 7000
•Room thermostat TP 7000RF incl. RX-1
•Mounting of heat meter (supplied by customer)
*requires local approval
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DHW: CAPACITY EXAMPLES AT 10°C / 45°C |
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HEATING: CAPACITY EXAMPLES |
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DHW |
Plate heat |
Supply flow |
Return flow |
DHW tap |
Pressure loss |
Flow rate |
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Heating |
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Heating circuit, ∆t |
Pressure |
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Flow rate |
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Capacity |
primary |
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primary |
load |
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primary* |
primary |
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Capacity |
Primary |
Secund- |
loss |
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Primary |
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exchanger |
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ary |
Primary |
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[kW] |
[°C] |
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[°C] |
[l/min] |
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[bar] |
[l/h] |
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kW |
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°C |
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l/h |
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°C |
*bar |
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32,3 |
U141RH |
55 |
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22 |
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13,16 |
0,23 |
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840 |
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10 |
20 |
20 |
0,30 |
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428 |
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32,3 |
U141RH |
60 |
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18 |
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13,16 |
0,16 |
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660 |
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10 |
30 |
30 |
0,26 |
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284 |
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41,0 |
U141RH |
60 |
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20 |
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16,86 |
0,24 |
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880 |
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10 |
40 |
40 |
0,24 |
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216 |
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53,0 |
U141RH |
60 |
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22 |
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21,84 |
0,45 |
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1200 |
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15 |
20 |
20 |
0,40 |
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644 |
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15 |
30 |
30 |
0,30 |
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428 |
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*) Stated pressure loss values are complete, incl. pipes. heat exchanger and valves |
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15 |
40 |
40 |
0,27 |
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320 |
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*heat meter not |
incl. and differential pressure controller set on 0,2 bar |
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© Danfoss | DHS-SRMT/ PL | 2018. 04 |
VL.KS.X2.02 |
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