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 specied 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 specied 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 dierential, 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 Buttery 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
2
VD.JV.D1.02 © Danfoss 02/2016