WATTS WMZ 2026-V Ni Heat meter installation set Instruction Manual

WATTS WMZ 2026-V Ni Heat meter installation set

Application

The Watts heat meter installation set WMZ 2026-V Ni is to be used in combination with a heating circuit manifold with con-nection 1″ male for the vertical installation of a 110 mm (¾”) or 130 mm (1″) heat meter. Depending on the version, the installa-tion set is supplied with or without a ball valve set. The addition-al ball valve set consists of 2 ball valves for shutting off the sys-tem. A sensor connection M10x1 is provided on the ball valves.

Technical data

Hydraulic data

• Max. operating pressure 10 bar
• Max. operating temperature 100 °C
• Media Water or water with glycol as per VDI 2035

Tightening torques for screw fittings

• 3/4″ 35 Nm
• 1″ 55 Nm

Materials

• Fittings Nickel-plated CW617 N brass
• Seals and O-rings AFM34/2 and EPDM

Component overview

Component overview

1. Plug 3/8″ M

2. Control valve with protective cap

3. Fitting piece for installation of a heat meter 110 mm (3/4″)

4. 2 adaptors for installation of a heat meter 130 mm (1″)

5. Elbow fitting 1″ M x 1″ UN

6. Ball valve set KH-SET WMZ 1)
   6.1 Temperature sensor connection M10x1

   • A Connection to primary supply 1″ F
   • B Connection to supply manifold branch 1″ UN
   • C Connection to return manifold branch 1″ UN
   • D Connection to primary return 1″ F

Installation

Requirement: the supply branch of the heating circuit man-ifold must be mounted at the bottom and the return branch must be mounted on the top. In the opposite case, exchange the supply and return branches.

1. Shut off the heating circuit manifold before mounting the installation set.
2. Mount the WMZ 2026-V heat meter installation set on the left or right side of the heating circuit manifold as shown in the picture in section 3 “Component overview”.
3. Before mounting the heat meter, shut off the installation set and the heating circuit manifold.
4. Mount the heat meter:
   • Heat meter, 110 mm ¾”: remove the fitting piece (3) and mount the heat meter with the connection ¾”.
   • Heat meter, 130 mm 1″: remove the fitting piece (3) and adaptors (4) and mount the heat meter with the connection 1″.
5. Mount the temperature sensor of the heat meter with M10x1 thread on the connection (6.1) of the supply ball valve.
6. Tighten all connections. Tightening torques of the screw connections: ¾” – 35 Nm; 1″ – 55 Nm.
7. Fill and flush the heating system, add antifreeze if there is a risk of freezing.
8. Check the heating system for leaks.
9. Set the flow rate on the control valve (2) as follows:
   • Remove the protective cap
   • Close the control valve (2) completely by turning it clockwise with an 8 mm Allen key.
   • Set the flow rate by turning it counterclockwise according to the diagram in section 5.
   • Put the protective cap.

Pressure loss diagram

Dimensions

Guarantee

Watts products are thoroughly tested. The said guarantee covers solely replacement or – at the full sole discretion of WATTS – repair, free of charge, of those components of the goods supplied which in the sole view of Watts present proven manufacturing defects. The period of lim-itation for claims based on defects and defects in title is two years from delivery/the passage of risk. This warranty excludes any damage due to normal product usage or friction and does not include any modified or unauthorized repair for which Watts will not accept any request for damage (either direct or indirect) compensation (for full details see our website). All sales subject to the Watts terms to be found on
www.wattswater.eu/gtc/.

The descriptions and photographs contained in this product specification sheet are supplied by way of information only and are not binding. Watts Industries reserves the right to carry out any technical and design improvements to its products without prior notice.” Warranty: All sales and contracts for sale are expressly conditioned on the buyer’s assent to Watts terms and conditions found on its website at www.wattswater.eu/gtc/. Watts hereby objects to any term, different from or additional to Watts terms, contained in any buyer communication in any form, unless agreed to in a writing signed by an officer of Watts.

Watts Industries Deutschland GmbH
Godramsteiner Hauptstr. 167
76829 Landau
Deutschland
Tel. +49 6341 9656 0
Fax +49 6341 9656 560
WIDE@wattswater.com
www.wattswater.de
Contacts Watts in Europe: www.wattswater.eu/contacts/

References

• WATTS EUROPE
• General Terms and Conditions
• Watts Industries Deutschland GmbH
• Allgemeine Geschäftsbedingungen | Watts Industries Deutschland GmbH
• WATTS Companies in Europe
• General Terms and Conditions

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