ZH 1 - Uncategorized STIEBEL ELTRON - Free user manual and instructions

Product Type	Safety assembly for floor-mounted cylinders
Model	ZH 1
Part Number	074370
Max Operating Pressure (factory set)	0.6 MPa
Max Operating Pressure (with replacement cartridge)	1.0 MPa
Water Connection	G 3/4 A male thread
Dimensions (H x W x D)	205 mm x 140 mm x 57 mm
Pressure Reducing Valve (optional)	DMV/ZH 1, part no. 074371, outlet pressure range 0.15-0.60 MPa
Included Accessories	Replacement cartridge for diaphragm safety valve
Solder Fittings Set (optional)	For raising the safety valve
Safety Valve Type	Diaphragm safety valve, rotatable and replaceable
Pipe Break Prevention	Integrated into drain outlet
Drain Outlet	Telescopic with locking ring fitting, can be extended with 22 mm copper pipe
Installation Orientation	Angled or straight-through, horizontal or vertical (flow bottom to top)
Non-Return Valve	Check annually, replace if leaking
Maintenance Interval	Check safety valve every 6 months
Cleaning Method	Clean seat and gasket with damp cloth, no abrasives
Regulatory Certifications	ÖA certification for drinking water contact (Austria)
Intended Use	Protect electric floor-mounted cylinders and integral cylinders from excess pressure

Frequently Asked Questions - ZH 1 STIEBEL ELTRON

What is the purpose of the Stiebel Eltron ZH 1 safety assembly?

The ZH 1 is designed to protect electric floor-mounted cylinders and integral cylinders against excess pressure. It includes a diaphragm safety valve that allows expansion water to drip out during heating.

How do I install the safety assembly in an angled configuration?

To install in angled form, slacken the nut on the safety valve, remove the safety valve with the fitting, interchange it with the output fitting, and tighten the safety valve fitting. The safety valve can still be rotated after tightening.

Can I extend the drain outlet?

Yes, the drain outlet has a locking ring fitting and can be extended using a 22 mm copper pipe (not included) and a locking ring fitting. It is also telescopic for flexible positioning.

What should I do if water continues dripping after heat-up?

First check the safety valve for dirt by unscrewing the upper section and cleaning the seat and gasket with a damp cloth. Do not use abrasive cleaners. Also check the supply pressure; if it exceeds 0.5 MPa, install a pressure reducing valve.

How often should I check the safety valve?

The safety valve should be checked every six months. During maintenance, ensure a collection container is available as water will escape when venting the valve.

How do I adjust the pressure reducing valve (DMV/ZH 1)?

Slacken the locking screw on the dial. Turn the setting dial towards minus to reduce pressure or towards plus to increase it. The outlet pressure display is visible and the valve can be rotated during operation.

What is the maximum operating pressure of the ZH 1?

The factory-set maximum operating pressure is 0.6 MPa. With a replacement cartridge, it can handle up to 1.0 MPa.

Can I install the safety assembly above the cylinder?

Yes, you can raise the safety valve using the solder fittings set (special accessory). The set includes an eccentric fitting, twin nipple, copper pipe, union nut, solder grommet, and sealing washer.

How do I check the non-return valve?

Close the shut-off valve using the handwheel. Unscrew and remove the service plug for the non-return valve. If water continues to discharge, the non-return valve is leaking and should be replaced. Check annually.

What is the water connection size for the ZH 1?

The water connection is G 3/4 A male thread. The pressure reducing valve DMV/ZH 1 also uses the same connection.

USER MANUAL ZH 1 STIEBEL ELTRON

OBSŁUGA I INSTALACJA

USO E INSTALLAZIONE

Sicherheitsgruppe | Bezpečnostní skupina | Predохранительный узел | Safety assembly | 安全组件 | Biztonsági részegység | Veiligheidsgroep | Grupa zabezpieczająca | Gruppo sicurezza

Druckminderventil | Tlakový redukční ventil | Редукционный клапан | Pressure reducing valve | 减压阀 | Nyomáscsökkentő szelep | Reduceerventiel | Zawór redukcyjny ciśnienia | Valvola riduttrice di pressione

» ZH 1

» DMV/ZH 1

Technical line drawing of a valve component (no text or symbols)

Technical line drawing of a mechanical assembly with no visible text or symbols

BEDIENUNG

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R-15.2.4-21-17232

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5.1.1 Montage in Eckform

26_02_10_0267

1. General information 20
   1.1 Document information 20
   1.2 Symbols in this document 20
   1.3 Units of measurement 20
2. Safety 20
   2.1 Intended use 20
   2.2 Safety instructions 20
   2.3 Product description 20

INSTALLATION

1. Safety 21
   3.1 General safety instructions 21
   3.2 Instructions, standards and regulations 21
2. Product description 21
   4.1 Standard delivery 21
   4.2 Special accessories 21
3. Installation 21
   5.1 Appliance installation 21
4. Initial start-up 22
   6.1 Adjusting the pressure reducing valve 22
5. Maintenance 23
6. Specification 24
   8.1 Dimensions 24
   8.2 Data tables 24

GUARANTEE

ENVIRONMENT AND RECYCLING

OPERATION

1. General information

1.1 Document information

The chapter "Operation" is intended for product users and qualified contractors.

The chapter "Installation" is intended for qualified contractors.

Read these instructions carefully before using the appliance and retain them for future reference.

Pass on the instructions to a new user if required.

1.2 Symbols in this document

Read the text next to this symbol carefully.

1.3 Units of measurement

All measurements are given in mm unless stated otherwise.

2. Safety

2.1 Intended use

The purpose of the appliance is to protect electric floor mounted cylinders and integral cylinders against excess pressure. If required, a pressure reducing valve available as a special accessory can supplement the safety assembly (see chapter "Product description / Special accessories").

2.2 Safety instructions

During the heat-up process, expansion water will drip from the safety valve.

If water continues to drip once heat-up is complete, please inform your qualified contractor.

2.3 Product description

The volume of water expands during heating. The expansion water must drip out via the safety valve and is routed away through the drain outlet.

INSTALLATION

3. Safety

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

3.1 General safety instructions

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

3.2 Instructions, standards and regulations

Observe all applicable national and regional regulations and instructions.

ÜA certification for building products in contact with drinking water in Austria:

4. Product description

A pipe break is integrated into the drain outlet of the safety valve, which prevents the waste water being sucked back.

The drain outlet is fitted on the safety valve with a locking ring fitting. It is rotatable and fits into any installation situation thanks to its telescopic extension. The drain outlet can also be extended with a copper pipe and a locking ring fitting.

The diaphragm safety valve can be rotated, repositioned and replaced at the threaded fitting for different methods of installation.

4.1 Standard delivery

The following are delivered with the appliance:

- Replacement cartridge for diaphragm safety valve

4.2 Special accessories

4.2.1 Pressure reducing valve DMV/ZH 1

Special pressure reducing valve to supplement the appliance if the supply pressure at the installation location is greater than 0.48 MPa.

4.2.2 Solder fittings set

For raising the safety valve

5. Installation

5.1 Appliance installation

Note

No shut-off valves, restrictions or strainers must be installed between the safety valve and the floor mounted cylinder.

▶ Please note that, depending on the supply pressure, you may also need a pressure reducing valve (see chapter "Product description / Special accessories").
▶ The drain connection of the safety valve must remain open to the atmosphere.
▶ Flush all pipework thoroughly before installation.
▶ Install the appliance in the cold water inlet. The appliance is suitable for angled or straight-through installation in horizontal and vertical pipework. Please note that the appliance should only be installed in vertical pipework if the flow direction goes from bottom to top.

5.1.1 Angled installation

1 Drain outlet
2 DHW outlet
3 Diaphragm safety valve

▶ Slacken off the nut on the safety valve.
▶ Remove the safety valve with the fitting. Interchange it with the output fitting.
▶ Tighten the safety valve fitting.

Even when secured in place, the safety valve can still be rotated.

5.1.2 Drain outlet extension

1 Locking ring fitting
2 Copper pipe 22 mm (not part of the standard delivery)
3 Drain outlet

5.1.3 Raising the safety valve

To make maintenance work easier, the appliance can be installed above the floor mounted cylinder. For this, you will need the solder fittings set, which is available as a special accessory.

1 Safety valve
2 Eccentric fitting
3 Twin nipple
4 Copper pipe
5 Union nut
6 Solder grommet
7 Sealing washer

▶ Solder a copper pipe into the solder grommet.
▶ Position the union nut with centric hole over the copper pipe.
▶ Solder the twin nipple onto the other end of the copper pipe.

▶ Install the safety valve with the eccentric fitting onto the twin nipple. Tighten the eccentric fitting. The safety valve can also be rotated when the fitting has been tightened.
▶ Fit the complete unit onto the safety assembly. Ensure that the sealing washer is seated correctly. Tighten the fitting.

6. Initial start-up

▶ Check the safety valve and the non-return valve (see chapter "Maintenance").

6.1 Adjusting the pressure reducing valve

For setting range, see chapter "Specification / Data table".

1 Locking screw
2 Union nut
3 Outlet pressure display
4 Setting dial

▶ Slacken off the locking screw on the dial.
▶ Turn the setting dial towards the minus to reduce the pressure or towards the plus to increase it.

The pressure reducing valve can also be rotated during operation so that the outlet pressure display is visible.

7. Maintenance

For later maintenance work on the installation, you can shut off the supply line to the safety assembly.

Depending on the position of the safety valve, you may need to drain the floor mounted cylinder before any maintenance work.

Seat and gasket of the diaphragm safety valve can be cleaned without changing the response pressure.

7.1.1 Checking, cleaning and replacing the safety valve

▶ Check the safety valve every six months.
▶ Ensure that a suitable collection container is available, as water will escape when the safety valve is vented. Turn the vent cap two or three times anti-clockwise.

During heat-up, expansion water must drip into the tundish.

▶ Check the function of the non-return valve if no water emerges.

Water should no longer drip out once heat-up is complete.

▶ If water continues to escape after heat-up, check the safety valve for dirt. Once you have unscrewed the upper section, you can clean the seat and gasket of the safety valve without changing the response pressure. A damp cloth is sufficient for this. Never use abrasive or corrosive cleaning agents.

▶ Check the supply pressure. If 0.5 MPa is exceeded, insert a pressure reducing valve.
▶ If necessary, check the function of the pressure reducing valve.

If a repair is required, you can replace the complete safety valve.

7.1.2 Cleaning the pressure reducing valve

▶ Slacken off the union nut on the spring cap.
▶ Remove the pressure reducing valve with the spring cap from the casing.
▶ Clean the pressure reducing valve with clear, cold water.

7.1.3 Checking the non-return valve

1 Service valve for non-return valve (2nd shut-off valve)
2 Shut-off valve
3 Pressure gauge connection
4 Service plug for non-return valve
5 Non-return valve

▶ Check the non-return valve annually.
▶ Close the shut-off valve using the handwheel.
▶ Unscrew and remove the service plug for the non-return valve.

If water continues to be discharged, the non-return valve is leaking:

▶ Close the second shut-off valve.
▶ Replace the non-return valve.

8. Specification

8.1 Dimensions

Pressure reducing valve

8.2 Data tables

		Safety assembly
Type ZH 1
Part number 074370
Operating data
Can be used for appliances with maximum operating pressure
Factory-set	MPa	0,6
With replacement cartridge	MPa	1,0
Water connection (male thread) G 34 A
		Pressure reducing valve
Type DMV/ZH 1
Part number 074371
Operating data
Can be used for appliances with maximum operating pressure	MPa	0,6
Outlet pressure
Factory-set	MPa	0,40
Minimum	MPa	0,15
Maximum	MPa	0,60
Water connection (male thread) G 34 A

Guarantee

The guarantee conditions of our German companies do not apply to appliances acquired outside of Germany. In countries where our subsidiaries sell our products a guarantee can only be issued by those subsidiaries. Such guarantee is only granted if the subsidiary has issued its own terms of guarantee. No other guarantee will be granted.

We shall not provide any guarantee for appliances acquired in countries where we have no subsidiary to sell our products. This will not affect warranties issued by any importers.

Environment and recycling

▶ Dispose of the appliances and materials after use in accordance with national regulations.

▶ If a crossed-out waste bin is pictured on the appliance, take the appliance to your local waste and recycling centre or nearest retail take-back point for reuse and recycling.

This document is made of recyclable paper.

- Dispose of the document at the end of the appliance's life cycle in accordance with national regulations.

操作

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4. Termékleírás

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4. Opis produktu

Abstract geometric logo design with interlocking angular shapes (no text or symbols)

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