Danfoss VHS-E Data sheet

Data Sheet

VHS-E Valves for One-Pipe Parallel and BaseConnection Radiators

Application

VHS-E straight VHS-E angle

System Layout

The VHS-E is the ideal control valve for modern base-connection radiators, as well as for universal or bathroom radiators with connection distances of 50 mm between flow and return.

VHS-E for one-pipe systems has a fixed radiator share of 40% volume and can be used with all Danfoss sensors and thermal actuators with RA2000 connection.

To avoid back flow in one-pipe systems, installation of a back flow restrictor (003L0296) is recommended.

To avoid the occurrence of scale and corrosion in the system, the composition of the heating water should comply with VDI guidelines 2035.

To ensure an appealing finish different types of valve covers are available.

In white ABS material (RAL 9010), suitable for wet lacquering or in black PPO, suitable for electrostatic powder lacquering. Enclosure designed for towel dryers with angled valves.

Danfoss Heating Solutions VD53E302 © Danfoss 10/2011 1

Data Sheet VHS-E Valves for One-Pipe Parallel and Base-Connection Radiators

Data and Ordering

Type

Angular Straight

Technical data

Connection (ISO 228-1)

Radiator System

G½

G¾A 013G4694

G½ 013G4691

G 3/4 A 1.2

G¾A 013G4693

Code no.

013G4692

Max. water temperature 120 °C Recommended differential pressure 0.05-0.2 bar Max. technical differential pressure 0.6 bar Testing pressure 16 bar Max. operating pressure 10 bar

The kv-value represent the flow volume (Q) in m³/h at a pressure drop (Δp) through the valve of 1 bar.

Max. flow volume (Q) through the radiator is approx. 40 %.

The stated maximum technical differential pressure indicates the limit for maintaining optimum control. For low-noise operation, system differential pressures should be held within the recommended range. Pumps should never be oversized; select those that generate just sufficient pressure to circulate the required volume of water. From experience, a differential pressure of 0.05-0.2 bar across the valve is adequate in most systems. In systems where it is too high, a Danfoss differential pressure regulator can be used to reduce it.

If sensors of the types RAW, RAS or RAE with remote setting unit is used, the P-band increases by a factor of 1.6. Manufacturer's value ia at "N" setting.

Accessories

Product Code no.

Cover* for VHS valve for panel radiators, straight pattern White RAL 9016, suitable for wet lacquering**

Cover* for VHS avlve for panel radiators, angle pattern White RAL 9016, suitable for wet lacquering**

Cover* for VHS valve for towel rail radiators, straight pattern White RAL 9010, suitable for wet lacquering**

Cover* for VHS valve for towel rail radiators, straight pattern White RAL 9016, suitable for wet lacquering**

Cover* for VHS valve for towel rail radiators, angle pattern White RAL 9010, suitable for wet lacquering**

Cover* for VHS valve for towel rail radiators, angle pattern White RAL 9016, suitable for wet lacquering**

013G4774

013G4775

013G4672

013G4674

013G4671

013G4673

Cover for VHS valve, straight pattern, chrome 013G4780 Cover for VHS valve, angle pattern, chrome 013G4779 Enclosure* for VHS valve for towel rail radiators, angle pattern

White RAL 9010, suitable for wet lacquering** Enclosure* for VHS valve for towel rail radiators, angle pattern

White RAL 9016, suitable for wet lacquering**

013G4751

013G4755

Sealing cone incl. seal for valve radiator with 3/4" ext. thread (20 pcs.) 003L0294

Self-sealing connection nipple for valve radiator with G½ int. thread (20 pcs.)

2 VD53E302 © Danfoss 10/2011 Danfoss Heating Solutions

003L0295

Data Sheet VHS-E Valves for One-Pipe Parallel and Base-Connection Radiators

Double rosette (PVC) for pipe diameter Ø 12-24 mm (min. distance 50 mm) 192H0161

Manual handwheel for all RA type valves (valve diff. pressure max. 0.6 bar) 013G5002

Draining the Radiators

Fill-and-drain fitting, not nickel-plated, with 3/4" ext. thread and hose nozzle

Connection bracket for sensors without snap-lock connection (10 pcs.) 013G4925

Cover for VHS, nickel-plated 003L0153

*Requires a sensor with snap-lock. **Guidelines for lacquering are enclosed in the product carton.

If the sensor element is removed temporarily while the system is under pressure, it should be replaced by an appropriate handwheel – available from Danfoss - to ensure positive and safe shut-off.

To drain the radiator, first unscrew and remove the valve’s metal cover. Then firmly shut off the return with an Allen key (see A).

Fix the drain fitting in position. Drain by turning the square headed drain screw to the left (see B).

003L0152

VHS is suited for connection of copper, soft steel, PE-X plastic and aluminium alloys. Connection is made with the help of Danfoss clamping joints.

A B

Design

1. Radiator

2. Sealing cone

3. Valve insert, presettable, type RA-UN

4. Stuffing box

5. Draining screw for rising pipe

6. Block-off/drain of return

7. Connection nipple (self-sealing)

8. Flat packing

Materials used for parts in water contact

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