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-off 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 flow 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 risk of persons being injured and equipment
	damaged increases considerably if the
	recommended permissible operating parameters
	are exceeded.

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 flow 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

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.

Storage	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	Heat meter assembly, fitting piece
	authorized service personnel only.	The flat station is equipped with a fitting piece for
	Installation must be in compliance with the local	insertion of a heat meter.
	standards and regulations.	Assembly of heat meter
	Allow for adequate space around the substation for	Loosen nuts from fitting piece, remove fitting
		piece and replace with heat meter.
	mounting and maintenance purposes.
		Mount the heat meter according to the medium
	Prior to the substation installation all substation	flow direction.
		After mounting of heat meter remember to
	pipes and connections should be cleaned and
		check all threaded connections
	rinsed.
	The substation should be wall-mounted. The	DCW meter (option)
		The substation can be equipped with a fitting
	mounting sheet on the back of the substation has
		piece for insertion of DCW meter.
	got holes for screw installation.
	A symbol for each of the different connections is	Assembly of DCW meter
	placed on the substation.	Please refer to above assembly instructions for
		heat meter.
	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.

Electrical connection	Electrical connections must be made by an au-	Before making electrical connections, please note
	thorised electrician only.	the following:
	Electrical connections must be made in accor-	- Please read the relevant parts of safety notes.
	dance with current regulations and local stan-	- The substation must be connected to 230 VAC
	dards.	and earth.
		- The substation must be connected via an exter-
		nal main switch, which can be disconnected
		by repairs.

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 off,

-threaded and flanged connections are tightened.



All Danfoss substations have been pressure tested prior to delivery.

Produced by Danfoss Redan A/S · 03.2013

3

Instructions	S-Solo HWP

Components

1Danfoss controller

2Actuator HE

32-way valve *

4Differential pressure controller

5Danfoss sensor *

6Manometer

7Balancing valve

8Air valve *

9Circulation pump

10Thermometer, DH supply

11Thermometer, DH return

12Thermometer, cylinder return

13Thermometer, HE supply

14Thermometer, HE return

15Sensor pocket for heat meter *

16Fitting piece for heat meter

17Strainer

18Throttle valve

* not visible on photo

Please note:

Your substation may look different than the substation shown, as variants with other components may be supplied. The control function, however, is basically as stated in this instruction manual.

Instructions for the fitted components will be supplied together with the substation.

District heating (DH) - In the following DH is specified 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 fitted substations, enabling the Danfoss Redan substations to be used in numerous schemes with different energy sources, depending on the local operating conditions. In order to simplify we have decided to use DH as designation for the primary supply.

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DH

DH

Cylinder

Cylinder

HE

HE

Supply

Return

Return

Supply

Supply

Return

Primäry

Cylinder connection

Secundary

wall

Top view

1	DH supply	5	HE supply
2	DH return	6	HE return

3Cylinder return

4Cylinder supply

4	Produced by Danfoss Redan A/S · 03.2012