Danfoss S-Solo HWP Operating guide
Instructions
S-Solo HWP
District heating substation for direct heating and
connection pipes for domestic hot water cylinder
Table of contents Safety notes / Mounting & Start-up .................................2
Types / Main components / Dimensioned sketch ......4
Description ...............................................................................5
Heating circuit .........................................................................5
Domestic hot water ...............................................................7
Troubleshooting HE ...............................................................8
Maintenance ............................................................................10
EU Declaration of conformity.............................................11
Instructions S-Solo HWP
Safety notes
The following instructions refer to the standard
design of the S-Solo HWP substation. Special
versions are available on request.
To avoid injury of persons and damages to the
device, it is absolutely necessary to read and
observe these instructions carefully.
Necessary assembly, start-up and maintenance
work must be performed by qualified and
authorized personnel only.
Please comply with the instructions of the system
manufacturer or system operator.
Unused connections and shut-o valves must be
sealed with a plug. The plugs must be removed by
an authorized service technician only.
Choice of materials
Choice of materials always in compliance with
local legislation
Warning of high pressure and temperature
The maximum temperature of the ow medium
in the S-Solo HWP substations is 90 °C.
The maximum operating pressure of the substation
is 10 bar.
Be aware of the installation’s permissible system
pressure and temperature.
The substation installation must be equipped with
safety valves, however, always in accordance with
local regulations.
Warning of hot surface
The substation has got hot surfaces, which can
cause skin burns. Please be extremely cautious in
close proximity to the substation.
Warning of electric shock risk
Before cleaning or servicing disconnect power
supplies.
Warning of transport damage
Before substation installation, please make sure
that the substation has not been damaged during
transport.
Sound level
≤ 55 dB
Corrosion protection
All pipes and components are made of stainless
steel and brass.
The maximum chloride compounds of the ow
medium should not be higher than 300 mg/l.
The risk of equipment corrosion increases considerably if the recommended permissible chloride
compounds are exceeded
Disposal
Storage
The risk of persons being injured and equipment
damaged increases considerably if the
recommended permissible operating parameters
are exceeded.
This product consists of materials which must not
be disposed of together with domestic waste.
Dismantle the product and sort the components
in various groups before disposal. Observe the
disposal rules of the local legislation.
If the substation is stored before installation, make
sure that the place is dry and heated.
2
Produced by Danfoss Redan A/S · 03.2012
Instructions S-Solo HWP
Mounting
The substation must be installed and connected by
authorized service personnel only.
Installation must be in compliance with the local
standards and regulations.
Allow for adequate space around the substation for
mounting and maintenance purposes.
Prior to the substation installation all substation
pipes and connections should be cleaned and
rinsed.
The substation should be wall-mounted. The
mounting sheet on the back of the substation has
got holes for screw installation.
A symbol for each of the dierent connections is
placed on the substation.
Tightening of connections
Due to vibrations during transport all connections
must be checked and tightened before the
substation is installed.
After observing that the substations operates
in accordance with the dimensioning basis, the
connections must be tightened again and the
substation can be taken into continuous use.
Heat meter assembly, tting piece
The at station is equipped with a tting piece for
insertion of a heat meter.
Assembly of heat meter
Loosen nuts from tting piece, remove tting
piece and replace with heat meter.
Mount the heat meter according to the medium
ow direction.
After mounting of heat meter remember to
check all threaded connections
DCW meter (option)
The substation can be equipped with a tting
piece for insertion of DCW meter.
Assembly of DCW meter
Please refer to above assembly instructions for
heat meter.
Electrical connection Electrical connections must be made by an au-
thorised electrician only.
Electrical connections must be made in accordance with current regulations and local standards.
Start-up
Prior to the S-Solo HWP installation all its pipes and
connections should be cleaned and rinsed. After
that the strainers should be cleaned.
Before starting-up, check if:
- pipes are connected according to the circuit
diagram,
- release valves are shut o,
- threaded and anged connections are
tightened.
Before making electrical connections, please note
the following:
- Please read the relevant parts of safety notes.
- The substation must be connected to 230 VAC
and earth.
- The substation must be connected via an exter nal main switch, which can be disconnected
by repairs.
All Danfoss substations have been pressure tested
prior to delivery.
Produced by Danfoss Redan A/S · 03.2013
3
Instructions S-Solo HWP
Components
1 Danfoss controller
2 Actuator HE
3 2-way valve *
4 Dierential pressure controller
5 Danfoss sensor *
6 Manometer
7 Balancing valve
8 Air valve *
9 Circulation pump
10 Thermometer, DH supply
11 Thermometer, DH return
12 Thermometer, cylinder return
13 Thermometer, HE supply
14 Thermometer, HE return
15 Sensor pocket for heat meter *
16 Fitting piece for heat meter
17 Strainer
18 Throttle valve
* not visible on photo
Please note:
Your substation may look dierent
than the substation shown, as variants with other components may
be supplied. The control function,
however, is basically as stated in this
instruction manual.
17
15
10
16
11
7
12
17
1
5
4
13
6
3
2
8
18
9
14
Instructions for the tted components will be supplied together
with the substation.
District heating (DH) - In the following
DH is specied as the heat source
for the substations. However, also
other heat sources such as an oil or
gas boiler or solar heating etc. could
be used as the primary supply for
the tted substations, enabling the
Danfoss Redan substations to be used
in numerous schemes with dierent
energy sources, depending on the
local operating conditions. In order
to simplify we have decided to use
DH as designation for the primary
supply.
Cylinder
DH
Supply
1 DH supply 5 HE supply
2 DH return 6 HE return
3 Cylinder return
4 Cylinder supply
DH
Return
Primäry Secundary
Return
Cylinder connection
Top view
Cylinder
Supply
HE
Supply
wall
HE
Return
4
Produced by Danfoss Redan A/S · 03.2012
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