WIKORA WIKOSOL TWIN TRIVALENT Installation Manual Operating Instructions

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WIKORA GmbH

Friedrichstr. 9

89568 Hermaringen

Phone: (07322) 9605-0

Fax: (07322) 9605-30

email: contact@wikora.de

Installation manual Operating instructions

Solar combi tank with DHW heat exchanger

WIKOSOL TWIN TRIVALENT

Installation and commissioning must be undertaken by a specialist.

General terms and conditions of warranty state that all installations must be carried out by a suitably trained and qualified plumber who observes the local norms and regulations.

The installation and maintenance record must be entirely completed and the user has to be instructed accordingly.

Efficient operation can only be guaranteed if the instructions of this manual are followed. Warranty does not cover any damage caused due to non-observance of this manual and the technical rules in force. The system is to be checked annually by a specialized company. In addition, occurring defects must be repaired immediately.

This document should be handed over to the client on completion of the installation.

Index

1 General ................................................................................................................................................................................... 2

2 Transport and installation ....................................................................................................................................................... 2

3 Dimensions and connections .................................................................................................................................................. 3

4 Technical data ........................................................................................................................................................................ 4

5 Installation .............................................................................................................................................................................. 5

6 Commissioning ....................................................................................................................................................................... 6

7 Maintenance and wear parts .................................................................................................................................................. 6

8 Warranties and guarantee ...................................................................................................................................................... 7

9 Installation record ................................................................................................................................................................... 8

1 General

Depending on the type and design, W IKORA tanks are suitable for heating and / or storing DHW and / or heating water. The heating is achieved indirectly via heat generators, if applicable, from different heat sources. The maximum working pressure and working temperature can be found in the technical data.

Set-up, installation and commissioning must be undertaken by a qualified specialist, who must observe these instructions.

The site of installation must be frost-protected according to DIN 4753 and should be in direct proximity to the heat generator.

When setting-up and installing the tank, the following regulations should be considered: In addition to the technical rules in force DIN 1988, DIN 18160, DIN 4753, DIN 4109, DIN 4708, DIN 4751 section 2-4 energy conservation law and VDE regulations are to be observed. Moreover, the relevant regulations of the suppliers as well as legal building regulations are to be considered.

Important: The exhaust pipe must be at least as big as the safety valve outlet in width. It may not have more than 2 bends and should not be longer than 2 m. If for any compelling reasons 3 bends or a length up to 4 m are required, then the entire exhaust line must be designed one nominal size larger. More than 3 bends, or a length exceeding 4 m is prohibited. The exhaust pipe must be installed with downward gradient. The drain line behind the funnel must feature at least the double width of the valve entrance. A sign is to be attached close to the exhaust pipe of the safety valve or on the safety valve itself. „For safety reasons water may leak from the exhaust pipe during the heating process! Do not lock! "The operability of the safety valve is to be checked at regular intervals by means of de-ventilation.

2 Transport and installation

In order to prevent damage during transport, the packaging should only be removed at the site of installation. During shipment, it should be ensured that the tank does not come in contact with any spiky or sharp items, nor is damaged through dropping or knocks. During installation, the tank must be disconnected from any humidity carrying components. Moreover, sufficient space for maintenance and cleaning purposes should be kept free in front of, beside, above and behind the tank.

Please note that the insulation provided should be kept in a dry place at least 24 hours at a minimum temperature of 20°C before installation.

3 Dimensions and connections

Illustration 1

Dimensions:

Type

∅ d ∅ D

E F H

(K) L (L1)

M N U V W R O

[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm]

[mm] [mm]

[mm]

[mm] [mm]

Wikosol Twin Trivalent 600

790 990 957 1397 1623

1562 (832)

282

(842)

732 282 1082 552 1630 832 157

Wikosol Twin Trivalent 800

790 990 1357 1797 2023

1962

(1032)

282

(1107)

832 282 1382 602 2030 977 157

Chart 1

W = Tilting dimension

Connections:

Type Wikosol Twin

Trivalent

600

Wikoso Twin Trivalent 800

Cold water / hot water 1/2 R 5/4 5/4 Coaxial flow / return 1.1/2.1 R ¾ ¾ Aux boiler flow / return 4/5 R 1 1 Drain (5) R

1 1

Solar flow / return 6 / 7 Rp

1 1

Heating flow / return 10 / 11 Rp

1 1

Plug for electric heater 12 Rp

6/4 6/4

Chart 2

R = male thread

Rp = female thread

4 Technical data

Description

Wikosol Twin

Trivalent 600

Wikosol Twin

Trivalent 800

Capacity tank

[litre] ca. 600 ca. 800

Capacity coaxial heat exchanger internal tube heating water

[litre] ca. 6 ca. 6

Capacity coaxial heat exchanger piston ring DHW

[litre] ca. 14 ca. 14

Max. working temperature tank / DHW / solar heat exchanger

[°C] 95 / 95 / 160 95 / 95 / 160

Max. working pressure tank / DHW / solar heat exchanger

[bar] 3 / 10 / 16 3 / 10 / 16

Capacity of solar heat exchanger

[litre] ca. 14 ca. 16

Surface coaxial heat exchanger internal tube heating water

[m²] 1,7 1,7

Surface coaxial heat exchanger piston ring DHW

[m²] 2,8 2,8

Heating area solar heat exchanger

[m²] 2,1 2,5

Insulation

100 mm PU soft foam with 1

mm PS cover

Material DHW heat exchanger

W.-St. 1.4404

Material buffer tank

S235JRG2

Corrosion protection buffer

Internal bare, external coated

with corrosion proof lacquer

Max. performance DHW HW 45 °C / 10 / tank 65 °C

[litre] 370 490

Flow rate solar heat exchanger

[m³/h] ca. 1,5 ca. 2,0

Pressure loss solar heat exchanger

[mbar] 70 90

Weight (empty)

[kg] ca. 260 ca. 280

Chart 3

5 Installation

All pipes connecting to the tank should have removable connections (fitting/flange). Pipe thread seals with teflon are to be avoided.

All tank connecting pipes are to be planned, constructed and tested according to the technical rules in force, as well as to the corresponding norms and regulations in accordance with their application and supply medium.

In highly calcareous water areas, we recommend to foresee a decalcification possibility through stop valves with drain possibility or t-piece with cold water inlet and hot water outlet of the DHW heat exchanger or a water softening device. Appropriate filters should be used to prevent dirt or particles from entering the tanks. Moreover, the tank should be ensured against pressure fluctuations and excess pressure through the installation of tested pressure reducing valves and safety valves. Sensors and thermostats necessary for temperature control must be securely and permanently positioned on the tank (immersion sleeve and sensor rail).

The tank’s venting and draining facilities must have the appropriate dimensions and be correctly installed. The installation company is responsible for the correct execution of work and for the safe and careful insulation of the pipes.

• When connecting to a solar plant, a temperature limiter is required and must be installed on site at the hot water outlet in order to prevent scalding.

• The minimum rate of flow for the charge pump of the hot water supply amounts to 850 l heating water / h.

• On the heating water side, the minimum pressure loss in the coaxial corrugated tube amounts to 125 mbar.

• The necessary heating water pump (to be provided on site) must have the appropriate dimensions.

• A temperature limiter is required and must be installed on site at the hot water outlet in order to prevent scalding.

When installing a circulation pipe, the plug in the flange cover must be replaced by a circulation connection attachment (plastic immersion pipe with double nipple R ¾”, Wikora part number 096 090).

The thread diameter of the heating safety valve depends on the nominal capacity of the water space and the maximum heating capacity of the heat generator. It can be determined as follows:

Reaction pressure Max. heating capacity of the heat generator

1,5 bar 36 kW 72 kW 144 kW 252 kW 433 kW 650 kW 2,0 bar 43 kW 86 kW 172 kW 302 kW 518 kW 778 kW 2,5 bar 50 kW 100 kW 200 kW 350 kW 600 kW 900 kW 3,0 bar 56 kW 112 kW 224 kW 395 kW 678 kW 1017 kW

Thread diameter (inch) 1/2 ¾ 1 5/4 6/4 2

lllustration 2 (Schematic drawing– example hydraulic system heating)

The size of the DHW safety valve is shown below:

Content of DHW space Min. valve size Max. heating performance

up to 200 l NW 15 (1/2“) 75 kW above 200 to 1000 l NW 20 (3/4“) 150 kW

Circulation connection

In order to operate the combi tank with a hot water circulation, a circulation connection attachment from Wikora is to be installed between the tank and the circulation pipe. The circulation connection attachment is supplied as a pre-assembled unit, and consists of one T-piece with integrated circulation dip lance made of stainless steel and a DHW mixing valve to prevent scalding. The attachment is to be installed according to the preceding connection scheme. Any other connection method is not acceptable and compromises the function of the combi tank. It is recommended to set the DHW mixing valve at 45-55°C.

In general, a circulation pipe involves high stand-by losses. For this reason, we recommend:

• The use of a circulation pump which is dependent on time and temperature

• The adequate insulation of the pipes

• Equipping the circulation pipe with a check valve

6 Commissioning

 Before putting into operation, the entire system should be flushed through. Particles in the system compromise the

operating reliability.

 Fill the heating system slowly with water and vent all the air.  Open the cold water stop valve and all hot water nozzles. The hot water heat exchanger is full when water leaks out

of all hot water nozzles. Then close all nozzles again.

 Start-up the heating system.  While the System is heating up, water will leak out of the safety valve.  Before the handover of the system to the end user/owner, the plumbing contractor should ensure that the

system is tested to full load, controls are set and that pipe work and connections are without leaks. Afterwards, the end user has to be instructed in the operation and handling of the tank, as well as the system. The instruction must to be documented in the installation and maintenance record.,

 Please note that the operation and lifetime of the system depend decisively on a regular maintenance.

7 Maintenance and wear parts

Regular maintenance increases the lifetime and operation reliability of the system. Decalcification at regular intervals may be necessary in highly calcareous water areas. Attention – only valid for heating tanks with hot water supply.

A chemical decalcification can be carried out by a specialist using an approved decalcifier and taking the appropriate precautions.

1. The safety valve protects the tank against excess pressure. The functional capacity must be checked at regular intervals

by venting. If an expansion vessel is used, the safety valve is not, or only rarely, required. Over a longer period of time therefore, it can become blocked and not function when needed.

2. If there is a danger of freezing, the DHW tank should be permanently heated or completely emptied.

3. A damp cloth is sufficient to clean the outer parts. Please avoid using any abrasive or solvent cleaning.

8 Warranties and guarantee

The warranty for our products is based on the legal provisions of the general Civil Code and the Consumer Protection Act.

In addition, defective appliances are replaced within the framework of our full warranty

within 1 year, as of the date of the

invoice, including the replacement, procurement and incidental costs. As far as our hot-

water heaters and pressurized boilers

are concerned, the warranty amounts for 6 months, as of the date of the invoice.

Subsequent to the full warranty, defective tanks are replaced within the framework of our guarantee. The guarantee

of the

different products and the conditions are shown in the table below.

All other claims are excluded. Repairs and costs which occur due to damage, inappropriate

installation, chemical,

electrochemical or electrical influences, incorrect operation or

improper manipulation, are excluded. Furthermore, the warranty

becomes invalid if th eappliance has been modified through the installation of externally supplied parts or

through irregular

professional maintenance.

Subject to our general terms and conditions.

Legal

warranty

2 years

Guarantee

years*

Conditions

WBO T/ToF ● 5 20 / 27 WBL ● 5 20 / 27 WBO Uno ● 5 20 / 27 WBO Duo ● 5 20 / 27 WP/Sol ● 5 20 / 27 WBO H ● 5 20 / 27 GS ● 5 20 / 27

Wikos ol Twin ● 10 27 Wikos ol ● 10 27 WPKR H Twin ● 5 20 / 27 WPKR Twin ● 5 20 / 27 WPKR ● 5 20 / 27 WPK ● 5 20 / 27 WPH-FW (tank) ● 5 27 WPR-FW (tank) ● 5 27

WPS ● 5 20 / 27 WPH ● 5 WPR ● 5 WPRR ● 5 WKS ● 5 -

Cu-finned tube heat exchanger ● - 27 Electric heating elem ent ● - -

Conditions:

Coverage Germany: Com pliance with the limits of the valid DHW regulations(TrinkwV 2001), especially the lim its in accordance with Appendix 2, Part 1-2 and Appendix 3 Coverage EU : Com pliance with the limits of the EG-Regulations 83/98

* Start of guarantee at date of invoice

Products

DHW storage tanks

Combi buffer tanks

Buffer tanks

Tank accessories

Under condition that the lim its of the valid DHW regulations have been respected, the anode has been examined for the first time after 2 years and afterwards annually and that the anode has been replaced by an original Wikora anode (individual receipts needed) by a specialized com pany.

9 Installation record

The installation has been completed according to DIN and the technical rules in force. In addition, the customer has received instruction concerning the operation and maintenance.

Place……………………………………………….. Date…………………………………………………………

Customer Installer

……………………………………………………. ………………………………………………………………. Signature Signature

Place of installation: ………………………………………………………………………………………………………………………

Name: ……………………………………………………………………………………………………………………...

ZIP Code/Place: …………………………………………………..………………………………………………………………….

Street: ……………………………………………………………………...………………………………………………

Phone: ……………………………………………………………………………...……………………………………...

Tank model: ………………………………. Serial number …………….………………..………………

Date of invoice ………………………………………………………...…………………………………………………………..

In the case of reclamation, the receipts for maintenance must be provided as proof. Please complete the data sheet, including the reason for reclamation, and submit to W ikora.

Submitting the maintenance record does not ensure any promise of guarantee or claim.

WIKORA WIKOSOL TWIN TRIVALENT Installation Manual Operating Instructions

Specifications and Main Features

Frequently Asked Questions

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