Danfoss DH Compact substation Operating instructions

Brand: Danfoss

Model: DH Compact substation

Type: Operating instructions

Instructions

DH compact substation

District heating compact substation

for indirect heating and domestic hot water systems

DH-SMT/FI

VI.KS.F1.02 © Danfoss 08/2006 1

Table of Contents

Table of Contents .......................................... 1

Safety notes ................................................... 1

Transportation .............................................. 2

Lifting and moving ....................................... 2

Storage ........................................................... 2

Mounting and settings ................................. 2

Pipe connections ...............................................3

Electrical connections ......................................3

Components ........................................................3

Filling, start-up ..............................................3

Maintenance .................................................. 4

Safety notes

Following instructions refer to the standard

design of the DH compact substation. Special

versions of substations are available on

request.

Danfoss does not bear responsibility for which-

ever damages of device, which have not been

mounted or stored in accordance with following

instructions. Therefore, please carefully read the

instructions before installation and start-up of the

substation.

To avoid injury of persons and damages to the

device, it is absolutely necessary to carefully read

and observe these instructions.

Necessary assembly, start-up and maintenance

work must be performed only by qualied and

authorized personnel.

Please comply with more accurate and detailed

instructions included in the technical documen-

tation delivered with the product or separately

by mail.

Those connections and shut-off valves, which

are ready for use, must be sealed with a plug.

The plugs can be removed only by qualied and

authorized personnel.

Warning of high pressure and temperature

The maximum temperature and pressure always

have to be checked on the product data label

attached to the product.

Be aware of the installation’s permissible system

pressure and temperature.

The risk of persons getting injured and equip-

ment being damaged increases considerably if the

recommended permissible operating parameters

are exceeded.

The substation installation is equipped with

safety valves which must always be mounted 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 of the substation.

Warning of transportation damage

Prior to installing substation, please make sure

that the substation has not been damaged during

transportation. Be extremely careful when lifting

or moving big and heavy substation.

DH compact substation for indirect heating and DHWInstructions

DH-SMT/FI

VI.KS.F1.02 © Danfoss 08/20062

Transportation

When receiving the substation please pay atten-

tion to following matters:

- there are no transportation damages,

- delivery is complete and in accordance with

the order

- sign the freight note and keep your copy of it.

In case of transportation damages, it is necessary

to ll the transportation damage form immedia-

tely. The form must be signed by the claimer and

the representative of the forwarding agent (e.g.

driver). Each forwarding agent driver has a form

for reporting transportation damages.

Lifting and moving

A wooden pallet is bound underneath the sub-

station in order to help moving and lifting the

substation. The substation should be moved

close to the installation place with the help of

the pallet truck.

Do not damage the substation when lifting it!

When lifting the substation, tie straps around the

wooden pallet placed underneath the substation.

The stress should not concentrate on the substa-

tion or its connections. The wooden pallet should

be used as a lifting and moving base as close to

the installation place as possible.

Storage

If the substation is stored prior to installation in a

warehouse or some other storage, make sure that

the place is dry and heated.

Mounting and settings

The substation must be installed and connected

by authorized service personnel only. Installation

must comply with the local standards and regu-

lations. Move the substation to the installation

place by following instructions given in section

“Lifting and moving”.

Leave adequate space around the substation for

mounting and maintenance purposes.

The DH compact substation is mounted directly

on the oor and it does not require clamping.*

In order to adjust the height and position of the

substation:

1) If adjusting feet are included, use them in order

to adjust the height. The substation should be

assembled straight horizontally. Pay attention

to adjusting all feet in correct way. Tighten the

tightening nuts in order to secure the stable

position.

2) If adjusting feet are not included, prepare a

levelled base in order to adjust height.

All connections must be checked and tightened

before the substation is installed. The connec-

tions may loosen during transportation.

Check that the product is according to designs

and specications included in the technical docu-

mentation.

All supporting structures assembled for the

period of transportation have to be removed

before the substation can be taken into use.

Prior to installation all pipes and connections

have to be cleaned and rinsed.

* does not apply to substations designed for wall-

mounting.

Adjusting feet are included in some substations.

Tightening nut

Instructions

DH-SMT/FI

VI.KS.F1.02 © Danfoss 08/2006 3

DH compact substation for indirect heating and DHW

Pipe connections

Make sure to connect pipes correctly according

to designs and specications included in techni-

cal documentation. Threaded, anged or welded

connections are used to connect the substation

into district heating network and internal net-

works.

Prior to start-up all pipes and connections have

to be checked.

The pipes must be mounted so that the strain

caused by e.g. thermal expansion, does not harm

the substation. The pipes must be equipped with

brackets in order to prevent any torsional stress.

Electrical connections

The electrical diagrams for electrication are

included in technical documentation. Internal

electrications are made in the factory.

The electric cables cannot be fastened with

the hot pipes. They need their own supporting

structures.

Components

Refer to technical documentation for detailed

instruction for all components (e.g. pumps, con-

trollers, heat exchangers).

Filling, start-up Before start-up pls check the following points:

Check points, before start-up

Pipes are connected according to the circuit diagram.

Drainage valves are closed.

Expansion vessel is connected with compact substation.

Threaded and anged connections are tightened.

Function of safety valves is checked.

Fill the substation with ow media and raise the

pressure slowly to working pressure.

When starting up the substation it should be air

vented. The shut o valve in the primary side on

the return side is opened and the shut o valve

on the supply side is closed. Air comes out by

opening the air vent valve.

After that the operation of the substation must

be observed. If the substation operates according

to designed parameters, it can be taken into

continuous use.

After start-up pls check the following points:

All Danfoss heat exchangers and substations have

been pressure tested according to PED 97/23/EC

(module H).

Make sure to give operating instructions to the

users of substation.

Check points, after start-up

Check temperatures.

Check pressures.

Thermal expansion.

Leakages.

Operation of pumps.

Flow directions.

DH compact substation for indirect heating and DHWInstructions

DH-SMT/FI

Maintenance

It is necessary to check and maintain the sub-

station on regular basis in order to keep it in good

operating condition.

The frequency of maintenance and service

inspections should be done according to system

manufacturer’ recommendations and local legis-

lation.

General overview of the equipment should take

place at least twice a year (before and after the

heating season). More accurate service should

take place once a year by authorized personnel.

Service

Always use authorized service personnel when

the equipment needs service.

In guarantee matters please contact your local

Danfoss Sales Company.

At least following points should be observed before and after the heating season:

Check points, maintenance inspection

No leakages.

Supply and return temperatures and pressures should be according to designed values.

Extraordinary noises.

At least following points should be inspected once a year by authorized personnel:

Check points, service inspection

Clean the strainer if necessary.

Check supply and return temperatures.

Check the parameters of the controller.

Check pressure drops in the heat exchangers.

The cooling of district heating water should comply with the requirements given by the local

DH company.

Measure the pre-pressure in the expansion vessel.

Check that the operating point of the pump stays in allowed area of the pump curve.

The substation should always be lled with ow

media even if out of operation. During service

it can be temporarily drained but otherwise it

should stay lled at all times.

Oy Danfoss Ab

Danfoss LPM

Box 19

79101 LEPPÄVIRTA

Tel: +358 403 092 200

Fax: +358 403 092 281

[email protected]

www.danfoss.com · www.lpm.danfoss.

Danfoss LPM Sp. z o.o.

Tuchom 147

80-209 Chwaszczyno

Tel.: +48 58 512 91 00

Fax: +48 58 512 91 05

lpmpoland_sprzed[email protected]

www.danfoss.com • www.heating.danfoss.pl

Danfoss DH Compact substation Operating instructions

Danfoss DH Compact substation Operating instructions

Danfoss DH Compact substation Operating instructions

Related papers