Danfoss WT-S 500 User manual

Installation Guide
WT-S 500
WT-S 1000
© Danfoss A/S (Dept./Init.), 2014-05 VIILB102 1

2 VIILB102 © Danfoss A/S (Dept./Init.), 2014-05
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

© Danfoss A/S (Dept./Init.), 2014-05 VIILB102 3
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 lled with water. Connections not in use must be plugged appropriately. During water
lling, condensed water may emerge on the outside of the tank. This will result in water underneath the tank, on the oor.
This will cease when the tank is heated. There must be a oor drain in the same room.
All connections (including those not used) must be insulated to minimize idle losses.
Commissioning
Start by lling the tank, then pressurize it. Continue to ll the radiator system (the enclosed water). The working pressure
may not exceed 10 bar (gauge), a safety valve with a releasing pressure of 10 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).
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-o 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 regula-
tions. The overow pipe from the safety valve must not be able to be shut-o and must run visibly above the oor drain.

4 VIILB102 © Danfoss A/S (Dept./Init.), 2014-05
WT-S 500 1000
Corrosion protection stainless stainless
Volume, hot water heater litre 500 1000
Max. pressure, hot water heater bar/MPa 10 10
Max. immersion heater length mm 640 850
Height (excl. feet) mm 1850 2295
Net weight kg 63 95
Immersion heater, max. output kW 9 2x9
Technical data
Filling
Fill the water heater as follows
1. Open a hot water tap in the system.
2. Open the shut-o valve on the incoming cold water. This valve should then be fully open during operation.
3. The hot water tap can only be shut o when the water heater is lled, which is when only water
comes out of the tap (initially an air-water mixture comes out of the tap).
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 temperature to a limit of 60°C.
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 overow 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 satisfactorily, it must be replaced.
• If there is a risk of freezing the water heat must be drained.
• In the event of malfunctions - contact the installer.

© Danfoss A/S (Dept./Init.), 2014-05 VIILB102 5
1850
1517
1276
1002
432
322
312
0
4
1
Ø734
5
66
5
WT-S 500
Volume hot water accumulator 500 litres
Test pressure 14,3 bar
Working pressure 10 bar
Rated temperature 95 °C
Weight 63 kg
Required ceiling height for tilting: min. 1960mm
WT-S 500
Height (mm) 1850
Dimension (ømm) 734
Connection WT-S 500
1 Connections (4x), DN50 int.
2 Circulation, DN25 int.
3 Temperature sensor conn. DN15 int.
4 Immersion heater conn. DN50 int. (2x)
(Located on the ”backside”)
1
2
3
Technical data
Dimensions

6 VIILB102 © Danfoss A/S (Dept./Init.), 2014-05
Ø990
2295
1928
458
384
338
0
1
1258
1538
WT-S 1000
Volume hot water accumulator 1000 litres
Test pressure 14,3 bar
Working pressure 10 bar
Rated temperature 95 °C
Weight 95kg
Required ceiling height for tilting: min. 2500mm
WT-S 1000
Height (mm) 2295
Dimension (ømm) 990
Connection WT-S 1000
1 Connections (4x), DN50 int.
2 Circulation, DN25 int.
3 Temperature sensor conn. DN15 int.
4 Immersion heater conn. DN50 int. (2x)
(Located on the ”backside”)
1
2
3
4
Technical data
Dimensions
1

© Danfoss A/S (Dept./Init.), 2014-05 VIILB102 7
1
2
2
2
2
We recommend that the insulation should be
removed before moving the hot water tank.
This is done to minimize the risk of damaging the
insulation.
WT-S 1000

8 VIILB102 © Danfoss A/S (Dept./Init.), 2014-05
Danfoss Heat Pumps
Box 950
SE-671 29 ARVIKA
Phone [phone]
E-mail: [e-mail]
Internet: www.heating.danfoss.com, www.thermia.com
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with no prior warning. The same applies to products already on order provided that the previously agreed specications 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.