STIEBEL ELTRON HM Trend, HMS Trend, HM, HMS Operation And Installation

OPERATION AND INSTALLAT ION

Hydraulic module for heat pumps

» HM » HM Tr end » HMS » HMS Trend

CONTENTS | SPECIAL INFORMATION

SPECIAL INFORMATION

OPERATION

1. General information ��3

1.1 Relevant documents_____________________________________________ 3

1.2 Safety instructions _______________________________________________ 3

1.3 Other symbols in this documentation _______________________ 3

1.4 Units of measurement __________________________________________ 3

2. Safety �� 3

2.1 Intended use ______________________________________________________ 3

2.2 General safety instructions ____________________________________ 3

2.3 Test symbols ______________________________________________________ 4

3. Appliance compatibility ��4

4. Appliance description ��4

4.1 WPM heat pump manager _____________________________________ 4

5. Maintenance and care ��4

6. Troubleshooting ��4

INSTALLATION

7. Safety �� 5

7.1 General safety instructions ____________________________________ 5

7.2 Instructions, standards and regulations ____________________ 5

8. Appliance description ��5

8.1 Standard delivery ________________________________________________ 5

8.2 Accessories ________________________________________________________ 5

9. Installation �� 5

9.1 General information _____________________________________________ 5

9.2 Removing the appliance cap __________________________________ 5

9.3 Minimum clearances ____________________________________________ 6

9.4 Wall mounting ____________________________________________________ 6

9.5 Hydraulic connection ___________________________________________ 7

9.6 Filling the system ________________________________________________ 8

9.7 Venting the appliance ___________________________________________ 8

9.8 Safety valve _______________________________________________________ 9

10. Power supply ��9

10.1 Electric emergency/booster heater _________________________ 10

10.2 Control voltage __________________________________________________ 10

10.3 WPM heat pump manager ____________________________________ 11

10.4 Sensor installation ______________________________________________ 12

10.5 Connecting external components ___________________________ 13

10.6 Fitting the appliance cap ______________________________________ 13

11. Commissioning �� 14

11.1 Check before commissioning the heat pump manager _14

11.2 Appliance handover ____________________________________________ 14

12. Troubleshooting �� 15

12.1 Resetting the high limit safety cut-out _____________________ 15

13. Maintenance �� 15

14. Speciﬁcation �� 16

14.1 Dimensions and connections _________________________________ 16

14.2 Wiring diagram HM | HM Trend ______________________________18

14.3 Wiring diagram HMS | HMS Trend __________________________20

14.4 Data table ________________________________________________________ 22

GUARANTEE

ENVIRONMENT AND RECYCLING

SPECIAL INFORMATION

- The appliance may be used by children aged8 and older and persons with reduced physical, sensory or mental capabilities or a lack of experience and know-how, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the resulting risks. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.

- The connection to the power supply must be in the form of a permanent connection. Ensure the appliance can be separated from the power supply by an isolator that disconnects all poles with at least 3mm contact separation.

- In the event of damage to the power cable this must always be replaced by a qualiﬁed contractor authorised by the manufacturer, using original spare parts.

- Fix the appliance in position as described in chapter "Installation/ Preparations".

- Observe the minimum and maximum water inlet pressure (see chapter "Speciﬁcation/ Data table").

- We recommend regular inspection (to establish the current condition of the system), and maintenance by a qualiﬁed contractor if required (to return the system to its original condition).

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OPERATION

General information

OPERATION

1. General information

The chapters "Special Information" and "Operation" are intended for both the user and qualiﬁed contractors.

The chapter "Installation" is intended for qualiﬁed contractors.

Note

Read these instructions carefully before using the appliance and retain them for future reference. Pass on the instructions to any new user where appropriate.

1.1 Relevant documents

 WPM operating instructions  WPM commissioning instructions  Operating and installation instructions for the connected

heat pump

 Operating and installation instructions for all other com-

ponents in the system

1.3 Other symbols in this documentation

Note

General information is identiﬁed by the adjacent symbol.

 Read these texts carefully.

Symbol Meaning

 This symbol indicates that you have to do something. The ac-

tion you need to take is described step by step.

Material losses (appliance damage, consequential losses and environmental pollution)

Appliance disposal

1.4 Units of measurement

Note

All measurements are given in mm unless stated otherwise.

2. Safety

1.2 Safety instructions

1.2.1 Structure of safety instructions

KEYWORD Type of risk

Here, possible consequences are listed that may result from failure to observe the safety instructions.

 Steps to prevent the risk are listed.

1.2.2 Symbols, type of risk

Symbol Type of risk

1.2.3 Keywords

KEYWORD Meaning

DANGER Failure to observe this information will result in serious

WARNING Failure to observe this information may result in serious

CAUTION Failure to observe this information may result in non-seri-

Injury

Electrocution

injury or death.

ous or minor injury.

2.1 Intended use

Observe the operating limits listed in chapter "Speciﬁcation".

This appliance is intended for domestic use. It can be used safely by untrained persons. The appliance can also be used in a non-domestic environment, e.g. in a small business, as long as it is used in the same way.

Any other use beyond that described shall be deemed inappropriate. Observation of these instructions and of instructions for any accessories used is also part of the correct use of this appliance.

2.2 General safety instructions

- The electrical installation and installation of the heating circuit must only be carried out by a recognised, qualiﬁed contractor or by our customer support engineers.

- The qualiﬁed contractor is responsible for adherence to all currently applicable regulations during installation and commissioning.

- Operate the appliance only when fully installed and with all safety equipment ﬁtted.

- Protect the appliance from dust and dirt ingress during building work.

WARNING Injury

The appliance may be used by children aged 8 and older and persons with reduced physical, sensory or mental capabilities or a lack of experience and know-how, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the resulting risks. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.

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OPERATION

Appliance compatibility

WARNING Injury

 For safety reasons, only operate the appliance with

the casing closed.

2.3 Test symbols

See type plate on the appliance.

3. Appliance compatibility

The appliance can be operated in conjunction with the following air | water heat pumps:

- HPA-O 3-8 CS Plus

- HPA-O 7-13 (C)(S) Premium

- WPL 13/18 E, WPL 13/18 cool

- WPL 15-25 A(C)(S)

- WPL 33 HT(S)

- WPL 07-17 ACS classic

- WPL 19-24 I, A

4. Appliance description

The appliance is a hydraulic module for air/water heat pumps installed outdoors and is installed by wall mounting inside the thermal envelope of the building. Connection to the water side of the appliance is from below. Connections are provided on the appliance for the heat pump ﬂow, the heating system ﬂow and for the heat exchanger for DHW heating. A further connection is intended for the drain hose from the safety valve.

The following are integrated into the appliance: a diaphragm expansion vessel with 24litre capacity, a high efﬁciency [HE heating circuit pump sized in line with heating output, an electric emergency/booster heater and a WPM heat pump manager.

6. Troubleshooting

If you cannot remedy the fault, notify your qualiﬁed contractor. To facilitate and speed up your enquiry, please provide the serial number from the type plate. The type plate is located at the front top, on the right or left hand side of the casing.

Sample type plate

Montageanweisung beachten! Dichtheit geprüft!

1 Number on the type plate

*xxxxxxxxxxxxxxxxxx*

Made in Germany

26_03_01_1570

Particular feature of the HM(S) with ASL-HM

The ASL-HM connector block is equipped with additional connections for the heat pump return, the heating system return and the return from the heat exchanger for DHW heating. In addition, the connections are equipped with ball shut-off valves to facilitate installation.

4.1 WPM heat pump manager

The heat pump manager is responsible for the processes that control and regulate the heat pump.

5. Maintenance and care

Material losses

Maintenance work, such as checking the electrical safety, must only be carried out by a qualiﬁed contractor.

A damp cloth is all you need to care for the plastic parts. Never use abrasive or corrosive cleaning agents.

We recommend regular inspection (to establish the current condition of the system), and maintenance by a qualiﬁed contractor if required (to return the system to its original condition).

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INSTALLATION

Safety

INSTALLATION

7. Safety

Only a qualiﬁed contractor should carry out installation, commissioning, maintenance and repair of the appliance.

7.1 General safety instructions

We guarantee trouble-free function and operational reliability only if original accessories and spare parts intended for the appliance are used.

7.2 Instructions, standards and regulations

Note

Observe all applicable national and regional regulations and instructions.

8. Appliance description

8.1 Standard delivery

The following are delivered with the appliance:

- 4 double ended screws with rawl plugs, washers and nuts

- 3TAF PT immersion/contact sensor

- 1 AFPT outside sensor

- Installation template

9. Installation

9.1 General information

Note

We do not recommend installing the appliance in wet rooms. Wet rooms include rooms used, for example, for washing or drying clothes.

To protect the appliance against damage it should be transported to the installation location in its original packaging.

Install the appliance in a suitable location close to the heat pump.

Ensure that the wall structure can bear the weight of the appliance before securing the appliance to the wall.

The wall on which the appliance is to be mounted must be even. Once mounted, the appliance cap must seal the appliance without gaps.

 Use spacer discs to compensate for any unevenness.

Material losses

 Always ﬁt the appliance cap when interrupting in-

stallation work for any length of time.

9.2 Removing the appliance cap

HM(S) | HM(S) Trend

8.2 Accessories

- Connector block ASL-HM

D0000041457

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INSTALLATION

≥150

≥400

≥150

≥400

Installation

ASL-H M

9.3 Minimum clearances

HM (S) | HM(S) Trend without ASL-HM

≥70

≥1000

 Maintain the minimum clearances to enable maintenance

work on the appliance.

If the appliance is not installed in a recess, we recommend leaving 400mm clearance on the right-hand side for the electrical connection.

9.4 Wall mounting

General

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164

 Position the installation template horizontally at the required

installation location. The installation template can be found in the cardboard box.

 Mark the holes on the wall. Please note that the bottom two

D0000041600

holes are only required in combination with the ASL-HM.

 Drill the holes.  Insert suitable rawl plugs into the holes.  Turn the double ended screws into the rawl plugs.

HM(S) | HM(S) Trend without ASL-HM

D0000042865

HM(S) | HM(S) Trend with ASL-HM

≥70

≥1000

 Maintain the minimum clearances to enable maintenance

work on the appliance.

If the appliance is not installed in a recess, we recommend leaving 400mm clearance on the right-hand side for the electrical connection.

D0000041599

 Place the appliance onto the double ended screws, followed

by the washers provided. Secure the appliance with the corresponding nuts.

D0000041461

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INSTALLATION

Installation

HM(S) | HM(S) Trend with ASL-HM

First mount the ASL-HM connector block on the wall.

1 Appliance 2 Connector block 3 Gaskets

 Place the connector block onto the double ended screws, fol-

lowed by the washers provided. Secure the connector block with the corresponding nuts.

 Place the appliance onto the double ended screws, followed

by the washers provided. Secure the appliance with the corresponding nuts.

 Connect the appliance to the connector block. Do not forget

the gaskets.

9.5 Hydraulic connection

Material losses

The heating system to which the appliance is connected must be installed by a qualiﬁed contractor in accordance with the water installation drawings that are part of the technical guides.

Material losses

For appliances with connector block or when ﬁtting additional shut-off devices, install a further safety valve in an accessible location on the heat generator itself or in the ﬂow line in close proximity to the heat generator. There must be no shut-off valve between the heat generator and the safety valve.

D0000041460

1 Heating ﬂow 2 Heat exchanger ﬂow

Note

If the appliance is used without a DHW cylinder, install a tee.

 Link connections “Heating ﬂow” and “Heat exchang-

er ﬂow” with a tee.

 Insulate the pipes with insulating material. To prevent air

from entering, ensure that the pipes are sealed up to the apertures in the casing.

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INSTALLATION

Installation

9.6 Filling the system

9.6.1 General information

Material losses

Never switch on the power before ﬁlling the system.

Material losses

High ﬂow rates or water hammer can damage the appliance.

 Fill the appliance at a low ﬂow rate.

In the delivered condition, the diverter valve of the MFG is positioned at the centre, enabling the heating and DHW circuits to be ﬁlled evenly. If power is switched on, the diverter valve automatically moves into the central heating position.

If you intend ﬁlling or draining the system later, ﬁrst place the diverter valve into its centre position.

For this, enable controller parameter DRAIN HYD in the DIAGNOSIS/ RELAY TEST SYSTEM menu.

9.6.2 Determine the ﬁll pressure

The diaphragm expansion vessel installed in the appliance has a volume of 24 litres. The pre-charge pressure P0 is 1.5 bar.

If the height difference ∆h between the highest point of the heating system and the diaphragm expansion vessel is no more than 13 m, the diaphragm expansion vessel can be used without any changes being required.

 Fill the heating system at a pressure of at least 1.8 bar (P0

+ 0.3 bar). Observe the safety valve’s response pressure of 3 bar.

If the height difference between the highest point of the heating system and the diaphragm expansion vessel is more than 13 m, the pre-charge pressure needs to be adapted.

 Calculate the pre-charge pressure:

9.7 Venting the appliance

Multifunction assembly (MFG)

D0000041463

1 Air vent valve

 Vent the pipework by pulling up the red cap on the air vent

valve.

 Close the air vent valve after the venting process.

9.7.1 HM(S) | HM(S) Trend with ASL-HM

Heating circuit

∆h

+ 0,2 bar

D0000081230

1 Air vent valve

 Vent the heating circuit at the ASL-HM connector block.

P0 =

 Note that the heating system ﬁll pressure increases

accordingly.

 Check whether a further external diaphragm expansion ves-

sel needs to be installed.

 Fill the heating system at the appropriate pressure (P0 + 0.3

bar). Observe the safety valve’s response pressure of 3 bar.

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D0000041462

+ 16 hidden pages

STIEBEL ELTRON HM Trend, HMS Trend, HM, HMS Operation And Installation

Specifications and Main Features

Frequently Asked Questions

User Manual

SPECIAL INFORMATION

General information

OPERATION

1.1 Relevant documents

1.3 Other symbols in this documentation

1.4 Units of measurement

2. Safety

1.2 Safety instructions

2.1 Intended use

2.2 General safety instructions

Appliance compatibility

2.3 Test symbols

4. Appliance description

6. Troubleshooting

4.1 WPM heat pump manager

5. Maintenance and care

INSTALLATION

Safety

INSTALLATION

7.1 General safety instructions

7.2 Instructions, standards and regulations

8. Appliance description

8.1 Standard delivery

9.1 General information

9.2 Removing the appliance cap

8.2 Accessories

9.3 Minimum clearances

9.4 Wall mounting

9.5 Hydraulic connection

9.6 Filling the system

9.7 Venting the appliance