Installation Guide

WT-C 500

WT-C 750

© Danfoss A/S (Dept./Init.), 2017-10 VIBND302 1

Danfoss A/S is not liable or bound by warranty if these instructions are not adhered to during installation or service.

The English language is used for the original instructions. Other languages are a translation of the original instructions.

(Directive 2006/42/EC)

© Copyright Danfoss A/S

2 VIBND302 © Danfoss A/S (Dept./Init.), 2017-10

Installation

The hot water heater should stand on a solid surface and be levelled with assistance from the setscrews underneath the tank.

The tank models that come without setscrews can be levelled with assistance of a shim. This must be done before the tank is connected to the pipes and filled with water. Connections not in use must be plugged appropriately. During water filling, condensed water may emerge on the outside of the tank. This will result in water underneath the tank, on the floor. This will cease when the tank is heated. There must be a floor drain in the same room.

All connections (including those not used) must be insulated to minimize idle losses.

Commissioning

Start by filling the tank, then pressurize it. Continue to fill the radiator system (the enclosed water). The working pressure may not exceed 3 bar (gauge), a safety valve with a releasing pressure of 3 bar must always be installed.

Maintenance

Check the safety valve annually by manually opening and closing the valve handle and making sure that water is released.

Check annually all connections for eventual leakage (also peripheral installations, i.e. a heat pump, etc.).

Technical data

WT-C

Corrosion protection, coil

Storage volume V

Volume, coil

Length, coil

Max. pressure, hot water heater

Max. pressure, coil

Max. immersion heater length

Height (incl. feet)

Net weight

Immersion heater max. output

Standing loss S

Energy efficiency class litre litre m bar/MPa bar/MPa mm mm kg kW

W

500 copper

486

4x3,5

4x12

3

10

670

1758

161

9

85,6

C

750 copper

737

6x3,5

6x12

3

10

850

1831

191

2x9

126,8

C

© Danfoss A/S (Dept./Init.), 2017-10 VIBND302 3

Electrical Installation

• The electrical installation must be performed by an authorized installer and follow applicable norms and regulations.

• When selecting electrical equipment, it must be selected with approved materials and enclosure class.

Pipe installation

The water heater must be supplied with:

• A safety valve

• A shut-off valve

• A drain valve

• A non-return valve

• A mixing valve

• A pressure gauge

• A vacuum valve as per applicable standards.

The water heater must be supplied with the prescribed safety equipment according to applicable local and national regulations.

The overflow pipe from the safety valve must not be able to be shut-off and must run visibly above the floor drain.

Filling

Fill the water heater as follows:

1. Open a hot water tap in the system.

2. Open the shut-off valve on the incoming cold water. This valve should then be fully open during operation.

3. The hot water tap can only be shut off when the water heater is filled, which is when only water comes out of the tap (initially an air-water mixture comes out of the tap).

4 VIBND302 © Danfoss A/S (Dept./Init.), 2017-10

Water temperature

Outgoing water temperature must not exceed applicable local and national regulations. At higher heater temperatures a mixer valve can be installed to restrict the outgoing hot water temperatures according to country specific regulations. The lower the temperature in the system, the less heat loss from lines and valves.

Safety valve

The safety valve must be inspected regularly.

Ease the safety valve lever slightly to release some water through the overflow pipe. This must be carried out at least 4 times a year.

It is quite normal for the safety valve to let out small amounts of water when the water tank is being charged.

• If the valve does not work satisfactory, it must be replaced.

• If there is a risk of freezing, the water heater must be drained.

• In the event of malfunctions - contact the installer.

•

Disassembling the product

When disassembling the product, applicable laws and regulations must be observed. Contact your installer for more information.

© Danfoss A/S (Dept./Init.), 2017-10 VIBND302 5

6

Connection WT-C 500

1 Expansion/Venting, DN25 ext.

2 Connections (8x), DN50 int.

3 Temperature sensor conn. DN20 int.

4 Immersion heater conn. DN50 int.

5 Hot water coil (2x12m), Ø22

6 Preheat coil/Hot water coil (2x12m), Ø22

Technical data

WT-C 500

Storage volume V

Test pressure

Working pressure

Rated temperature

Weight

Standing loss S

Energy efficiency class

486 litres

4,3 bar

3 bar

100 °C

161 kg

85,6 W

C

Dimensions

WT-C 500

Height (mm)

Dimensions (mm)

1758

821 x 695

Required ceiling height for tilting: min. 1850mm

467

192

0

1758

1710

1492

1217

1042

942

892

842

792

742

695

1

2

6

2

4

5

5

3

2

3

2

6

3

VIBND302 © Danfoss A/S (Dept./Init.), 2017-10

Connection WT-C 750

1 Expansion/Venting, DN25 ext.

2 Connections (8x), DN50 int.

3 Temperature sensor conn. DN20 int.

4 Immersion heater conn. DN50 int.

5 Hot water coil (3x12m), Ø22

6 Preheat coil/Hot water coil (3x12m), Ø22

Technical data

WT-C 750

Storage volume V

Test pressure

Working pressure

Rated temperature

Weight

Standing loss S

Energy efficiency class

737 litres

4,3 bar

3 bar

100 °C

191 kg

126,8 W

C

1240

1065

965

915

865

815

765

490

215

0

1831

1785

1515

Dimensions

WT-C 750

Height (mm)

Diameter (ømm)

1831

960

Required ceiling height for tilting: min. 2085mm

Ø 780

Ø 960

1

2

3

6

2

4

5

2

3

5

3

2

6

© Danfoss A/S (Dept./Init.), 2017-10 VIBND302 7

Danfoss Heat Pumps

Box 950

SE-671 29 ARVIKA

Phone +46 570 81300

E-mail: [email protected]

Internet: www.heating.danfoss.com, www.thermia.com

Danfoss assumes no responsibility whatsoever for any errors occurring in catalogues, brochures or other printed material. Danfoss reserves the right to make changes to (the design of) its products with no prior warning. The same applies to products already on order provided that the previously agreed specifications remain unchanged. All trademarks in this material are the property of the respective company. Danfoss and the Danfoss logotype are trademarks which belong to Danfoss A/S. All rights reserved.

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