Danfoss DSS1 Data sheet

Data Sheet

Welded District Heating Stations
Type DSS1

General description
and application:

Maximum operating
parameters:

District heating transfer stations provide the link
between district heating suppliers and customers’
systems. They incorporate the necessary equipment
to tailor the supplied heat to the needs of the object
premises as specied in the heating supply contract. In
this they need to comply with all applicable standards
and with the supplier’s technical connection conditions.
Indirect connections (in which district heating and in­house systems are hydraulically isolated) incorporate
components to separate the systems (heat exchanger),
to limit the ow volume to that specied in the
contract, regulate the secondary supply temperature
and measure the energy consumption. The system
described here is a standard type where primary
medium is steam. On secondary heating circuits or
modules can be connected optional.

Primary

Maximum permissible supply temperature, primary TVP 200 °C
Maximum permissible operating pressure, primary PZP 12,4 bar (g)
Rated pressure, primary PN 16
Maximum permissible pressure dierential, primary DPP 10 bar
Maximum permissible mass volume, primary MZP 2.200 kg/h

Secondary

Maximum permissible supply temperature, secondary TVS 110 °C
Maximum permissible operating pressure, secondary
Rated pressure, secondary
Maximum permissible ow volume, secondary VZS 73 m3/h bei w <= 1,5 m/s

PZS 10 bar or pending from safety valve

PN 10

Technical data:
Types:
Codes:

Materials:

DHS -SR MT/PL

Type: DSS1 IT xxx-xxx-0000-MD -> 040-040 050-050 065-065 080-080 100-100 125 -125

SAP Code -> 004X6281 004X6282 004X6283 004X6284 004X6285 004X6286

MZP [kg/h] max. ~ 150 225 450 600 120 0 1650

VZS [m3/h] dT 20K 4300,0 6450 129 00 17200 34400 47300,0

DN size steam DN 40 DN 50 DN 65 DN 80 DN 100 DN 12 5

DN size condensate DN 20 DN 20 DN 20 DN 20 DN 20 DN 20

DN size secondary DN 40 DN 50 D N 65 DN 80 DN 10 0 DN 125

Typ e Producer capacity ca. -> 100 kW 150 kW 300 kW 4 00 kW 800 kW 110 0 k W

Motorized valve DANFOSS VFGS2 PN16 32 / KVS16 32 / KVS16 50 / KVS32 65 / K VS50 80 / KVS 80

Combi valve DANFOSS AVQ M PN16 15 / 1,0 15 / 1,0 15 / 1,6 15 / 1,6 15 / 2,5 15 / 4,0

Heat exchanger SECESPOL SHR-VAS X 2.11 3.18 5.38 6.50 9.88 12 .114

DN size DN 40 DN 50 DN 65 DN 80 D N 10 0 D N 10 0

Safety valve GÖTZE/AR I 851H4 /12903 ½" ¾" 1" 1" 32 / 50 40 / 65

Pipes and pipe ttings, anges, moulded parts, sleeve nuts 1.0352, P235GH-TC1, CC491K (RG-5)
Heat exchanger 1.0038 / 1.4301 / 1.4307 / 1.4541
Fittings 0.6025 (GG25), 0.7043 (GGG-40. 3), CC491K (RG-5)
Insulation (heat exchanger)

Insulation (condensate- and secondary)

VD.JV.D1.02 © Danfoss 02/2016

Mineral ber mats/sheet metal coated RAL5000
PU Hard foam λ=0,029 W/mK (insulation class 3
acc. EN 12828/Annex C)

100 / KVS125

1

Data Sheet Welded District Heating Stations Type DSS1

Function:

Circuit diagram:

Steam substations provides special kind of indirect
systems. Mainly steam is existing, if due to industrial
processes of this must be generated and can also
be used for heating.

Here, the most common application of the con­densing control is shown. The main part of these
systems is a standing Tube&Shell heat exchanger
(HEX). The steam is here placed inside the tube of
the device. Via control valve (24/25) on the conden­sing side of the system is the necessary secondary
supply temperature (S3) is adjusted according to
demand. On the steam side there is an integrated
control valve (20/21) which in accordance with the
statutory regulations is aware of the beyond the
acceptable parameters on the secondary side. For
this are DIN-securit y-proven thermostats (560/565)
and, if necessar y, safety pressostate (570/571) placed
on secondary circuit. The use of depend on the pre­sent parameters of the system and can be adjusted
individually as an option.

S1

An optional selec table vacuum breaker (50) ensures
that after switch o, for example, the system (steam
safety control valve 20/21 and condensing control
valve 24/25 closed) can give rise to no operation of
the heat exchanger. Depending on the state is via
the condensing control valve in tube of the heat
exchanger precisely control the secondary supply
temperature is possible.

Secondary additional heating modules can be con­nected. This can be adapted to the application of
the electronic controller, if necessary.

Steam substations are always individually planned
and explaining systems, where a high level of the
accuracy already in designing is required.

With questions to design and individual adaptation
to the conditions, please contac t our sales engineers
or the technical support.

ECL
310

50

opt.

560 565

opt.

100

200 220 430 2 0 / 21 430 432

201 250 201 24 /25 201 221 4 01

201

200 Bellows shut-o valve
201 Bellows shut-o valve

220 Dirt trap / Strainer
221 Dirt trap / Strainer (ne screen)
250 Non-return valve
20 Motorized control valve
21 Electrial actuator
24 Combi (control) valve
25 Electrial actuator
400 Industrial thermometer
401 Industrial thermometer
432 Manometer shut o valve & siphon
431 Manometer
50 Vacuumbreaker (optional)
HEX Tube & Shell heat exchanger

400

HEX

570

570

opt

S3

opt

S5

280270431

270 Drain valve
280 Drain valve
560 Safety double thermostat TC/STM
565 Safety thermostat STL (optional)
570 Pressure transmitter max. (optional)
100 Safety valve
440 Manometer
MAG Pressure retention connector
571 Pressure transmitter min. (optional)
210 Buttery valve
410 Integrated bimetall thermometer
S1 Outdoor temperature sensor (loose)
S3 Supply temperature sensor
S5 Return temperature limiter (sensor)
EC L 310

Electronic regulator

MAG 571

opt

210
410

210
410

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VD.JV.D1.02 © Danfoss 02/2016

Data Sheet Welded District Heating Stations Type DSS1

Dimensions:

B BR1 BR2 H HR T T1 Weight

mm mm mm mm mm mm mm net~kg

DN size
primary
(steam)

DN size

secondary

no additional

connections

(Primary/

Secondary)

Metal sheet

box

Danfoss

ECL-Controller

Type designation:

Type / Designation Code

DSS1 IT 040-040-0000-MD 004X6281 2460 2088 1750 570 330 240

DSS1 IT 050-050-0000-MD 004X6282 2565 2122 179 0 600 370 290
DSS1 IT 065-065-0000-MD 004X6283 2702 1310 1000 215 6 1820 600 370 360

DSS1 IT 080-080-0000-MD 004X6284 2965 1360 1130 2204 1865 660 370 420

DSS1 IT 100-100-0000-MD 004X6285 3308 1480 1240 2249 19 40 700 440 520

DSS1 IT 125-125-0000-MD 004X6286 3482 148 0 139 0 2453 2040 800 400 680

DSS1 IT 040 040 0000 MD

Base Type

Danfoss

Station

Steam

Indirekt

1 Heat

exchanger

(Tube&Shell)

Capacity specication: Capacities (see page 1) are average values for temperatures of saturated steam between 120 … 150°C

(~1-4 bar(g)) and secondary temperature dierences of dTK = 20K. Depending on overheating and
secondary temperature dierence checking/recalculating of heat exchanger with respect to the
suitability or the permissible velocities and performance is required.

Please contact your local sales responsible or technical support in headquarters.

VD.JV.D1.02 © Danfoss 02/2016

3

Data Sheet Welded District Heating Stations Type DSS1

List of components:

No. Construction type Producer Type (detail)

200 Bellows shut-o valve ARI FABA 12.046
220 Dirt trap / Strainer DANFOSS FVF
250 Non-return valve DANFOSS 812
20 Motorized(safety shut-o) control valve DANFOSS VFGS2 PN16
21 Electrial actuator with certied safety function DANFOSS AME 659 SD
400 Industrial thermometer SIKA NG150 200 °C
432 Manometer shut o valve & siphon
50 Vacuumbreaker (optional) SPIRAX VB 21

201 Bellows shut-o valve ARI FABA 12.046
221 Dirt trap / Strainer (ne screen) DANFOSS FVF
24 Combi(control)valve (incl. Flow limiter) DANFOSS AVQM PN16
25 Electrial actuator with stroke limitation DANFOSS AMV 20 SL
401 Industrial thermometer SIKA NG150 120°C
431 Manometer SUKU D80/16bar/Kl.1.0
270 Drain valve ARI FABA 12.046

HEX Tube & Shell heat exchanger SECESPOL SHR-VAS X

280 Drain valve OVENTROP OPTIFLEX
560 Safety double thermostat TC/STM JUMO AT 220
565 Safety thermostat STL (optional) JUMO AT 70
570 Pressure transmitter max. (optional) DANFOSS BCP3H PRESSOSTAT
100 Safety valve GÖTZE/ARI 851H4/12903 pab = 5 bar(g)

440 Manometer SUKU D8 0/6b ar/K l.1.1
MAG Pressure retention connector R thread
571 Pressure transmitter min. (optional) DANFOSS BCP3L PRESSOSTAT
210 Buttery valve ARI ZESA 22.012
410 Integrated bimetall thermometer ARI Thea D80/120°C/Kl.1.0
S1 Outdoor temperature sensor (loose) DANFOSS ESMT
S3 Supply temperature sensor DANFOSS ESM B-12
S5 Return temperature limiter (sensor) THERMOKON SFK02

EC L 310

Electronic regulator DANFOSS EC L 310

Regulator:
(Electronic controller)

Depending on the requirements/applications various application
keys can be used. This is depending from secondary module
which can be connected in addition. Base version will be
delievered with A337.

Options: Depending on the requirements / regulations or norms,

additional components (in particular safety elements)
can be required:

Code Construction type Producer Type (Detail)

004F3100 Vacuumbreaker (optional on request) SPIRAX VB 21
004F1710 Safety thermostat STL (optional if requested) JUMO AT 70
017B0038 Pressure transmitter max. (optional if requested) DANFOSS BCP3H PRESSOSTAT
017B0062 Pressure transmitter min. (optional if requested) DANFOSS BCP3L PRESSOSTAT

Data Sheet ECL 310

see local norms
and requirements

4

VD.JV.D1.02

Produce d by Danfoss A/S © 02/2016