UNI Buffers With Hygienic Stainless Steel Corrugated Coil User Manual

**UNI Buffers With Hygienic Stainless Steel Corrugated Coil User Manual

**

IMPORTANT RULES

COMBINED BUFFERS FOR CENTRAL HEATING AND DOMESTIC HOT WATER PRODUCTION + HYGIENIC COIL / COMBINED BUFFERS FOR CENTRAL HEATING AND DOMESTIC HOT WATER PRODUCTION WITH ONE HEAT EXCHANGER + HYGIENIC COIL / COMBINED BUFFERS FOR CENTRAL HEATING AND DOMESTIC HOT WATER PRODUCTION WITH TWO HEAT EXCHANGERS + HYGIENIC COIL

The instruction manual and the technical description are prepared in order to acquaint you with the product and the conditions of proper installation and usage. Read them carefully and follow them.

These instructions are also intended for use by qualified technicians, who shall perform the initial installation, or disassembly and repairs in the event of a breakdown.

The observance of the instructions contained herein is in the interest of the buyer and represents one of the warranty conditions, outlined in the warranty card. The non-observance of the instruction can be reason of losing warranty!

This manual is an integral part of the appliance. It must be kept with care and must follow the appliance if the latter is transferred to another owner or user and/or to another installation.

Read the instruction and tips very carefully. They will help you secure a safe installation, use and maintenance of your appliance.

The installation is at the buyer’s expense and must be carried out by a professional technical person from the sector in accordance with instructions in the manual.

ATTENTION! Improper installation and connection of the appliance may make it hazardous for the health and life of consumers. It may cause grievous and permanent consequences, including but not limited to physical injuries and/or death. Improper installation and connection of the appliance may also lead to damage to the consumers’ property /damage and/ or destruction/, or to that of third persons, as a result of, but not limited to flooding, explosion and/or fire.

Installation, connection to the main water and power supply, and putting into operation must be carried out by certified electricians and technical personnel certified in installation of this category of appliances, who have obtained their license in the state where the installation and commissioning of the appliance are carried out, and in compliance with its local legislation.

IMPORTANT! Non observance of below described rules leads to warranty fault and the produser bear no more responsibilities for you appliance!

• The use of the appliance for any purpose other than that it is intended (p.III) is prohibited.

• Do not start using the buffer if it is not filled with water.

• The installation and maintenance must be carried out by a professional from the sector in accordance with manufacturer’s instructions. (p.V 1-2- 3-4-5).

• The buffer must only be installed in premises with normal fire resistance. There should be a siphon connected to a plumbing drainage.
  The premises should be protected from freezing and the temperature should never be lower than 4 °C.

• Qualified P&P specialists and Electricians must only perform the connecting of the buffer to the local or central water heating, solar panel and electric mains.

• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

• Children should be supervised to ensure that they do not play with the appliance.

• If the probability exists for the premise’s temperature to fall below 0°C, the water heater must be drained via raising the safety return-valve’s lever.

• The safety valve must be left open to the atmosphere.

• During use (water heating mode), the dripping of water from the safety return-valve’s drainage opening is normal. The same must be left open to the atmosphere.

• In order to secure the water heater’s safe operation, the safety return-valve must undergo regular cleaning and inspections for normal functioning /the valve must not be obstructed/, and for the regions with highly calcareous water it must be cleaned from the accumulated lime scale. This service is not provided under warranty maintenance.

• When connecting copper pipes to the inlets and outlets, use an intermediate dielectric connection. Otherwise there is a risk of contact corrosion that can occurs on the connection fittings!

• For the connection of copper pipes to the inputs and outputs, use an intermediate dielectric connection. Otherwise there is a risk of occurrence of contact corrosion connecting fittings!

• In order to secure the water heater’s safe operation, the safety valve must undergo regular cleaning and inspections for normal functioning / the valve must not be obstructed/.

• This Device and its heat exchangers are intended for use with water and mixture of water and Propylene (Ethylene) GLYCOL at liquid state. The presence of anti corrosion additives is obligatory. Using different fluids in different states leads to warranty violation!

IMPORTANT! Usage of this device at temperature and pressure level above prescribed leads to warranty violation!

TECHNICAL DATA

1. Storage Volume of tank, L – see the appliance’s rating plate
2. Net Weight – see the appliance’s rating plate
3. Heat exchanger surface- see the appliance’s rating plate
4. Solid insulation PU
   Storage Volume of tank, Ltr| Solid Insulation PU, mm
   ---|---
   500| 50
   800 ÷ 2000| 100
5. Volume of heat exchanger – see the appliance’s rating plate
6. Standing heat loss- see the appliance’s rating plate, see Annex II
7. Max.temperature of the tank – see the appliance’s rating plate
8. Max.temperature of heat exchangers – see the appliance’s rating plate
9. Max. design pressure of water side – see the appliance’s rating plate
10. Max. design pressure of heating side – see the appliance’s rating plate
11. Name and address of the manufacturer – see the appliance’s rating plate

INTENDED USE

The appliance is intended to supply hot water to households equipped with a piping system working at pressure below 8 bar (0,8 MPa), as well as for mounting into central heating system with pressure below 0.3 MPa (3 Bar).
The appliance is intended for work in closed, heated premises (above 4 oC).

DESCRIPTION OF THE APPLIANCE

Depending on the model of the high capacity water heater (HCWH), it can has one or two built-in heat exchangers. The connections to the high capacity buffers should be made following the market outlets and inlets, described below: TS1, TS2, TS3, TS4 – for mounting temperature sensors (each heat exchanger can be controlled by temperature). If the appliance is equipped with one heat exchanger there will be only one outlet “TS1” available. **(Fig.1a, 1b)

**

MOUNTING AND CONNECTION

ATTENTION ! Qualified technicians must perform all technical and electrical assembly works.

INSTALLATION

Buffers are delivered on an individual transport pallet. If the high capacity buffers are used in premises with low humidity and flat floor you can leave the pallet as it is mount on the appliance, otherwise – please follow the described steps bellow (Fig. 2):

• Put the water heater in horizontal position;

• Unscrew the three bolts which hold the pallet to the buffer;

• Mount the adjustable feet directly to the appliance;*

• Put the high capacity water heater (HCWH) in vertical position and adjust the level using the feet.
  *If the adjustment feet are delivered in separate parts you can assemble them as follow (Fig. 3):
  

• put the part 1 on bolt 2 which is unscrewed from the pallet

• put the washer 3 which is removed from the pallet

• Screw on the nuts 4 which are delivered with the appliances

ATTENTION! In order to prevent injury to user and/or third persons in the event of faults in the system for providing hot water, the appliance must be mounted in premises outfitted with floor hydro insulation (or) plumbing drainage.

MOUNTING OF INSULATION 800-2000 Ltr.

For the installation of insulating material two persons, in the case of very big boiler, three persons are needed. The temperature of the room where the fitting takes place should be at least 18°C. The insulation set should be stored at above mentioned temperature at least one hour before operating!

In the next step both sides of the zipper have to be pulled with light traction into the direction of the arrows shown in Fig. 4. Please take care that the prefabricated holes stay in place and the connections are accessible all the time.

It is important to make sure that both sides of the zipper do not remain more than 20mm apart from each other after being fitted (Fig. 4). Now push both sides of the zipper to the boiler and fix them on the first position. If necessary, the insulation can be narrowed (Fig. 4) down again.

Once the insulation material has been fitted correctly and fastened with the zipper, the foamed material is inlayed and closed with a plastic lid on the top. Finally, rosettes can be fixed onto the connections (Fig. 4).

The insulating set should only be stored in a dry place! We cannot be held responsible for damage because of failure to observe these instructions!

CONNECTING THE SERPENTINES (HEAT EXCHANGERS) WITH HEATING INSTALLATION USING ALTERNATIVE AND RENEWABLE SOURCES

ATTENTION! Qualified P&P specialist and technicians must perform all assembly works for connection to the heat sources.

The connection of the serpentines (heat exchangers) with the heating installation should be done considering the marked outlets and inlets as described below:
IS1 (MS) – Inlet of heat exchanger 1
OS1 (ES) – Outlet of heat exchanger 1
IS2 (M) – Inlet of heat exchanger 2
OS2 (E) – Outlet of heat exchanger 2
Make sure that the system is empty of air. The presence of air may cost incorrect work of the boiler. Maximum temperature of the heat transfer fluid: 110°C. Maximum pressure of the heat transfer fluid: 0.6MPa!A safety valve inline coil heat exchanger have to be fit according to HVAC designer requirements but its adjustment must not be higher than Pnr = 0.6MPa.
(EN 1489: 2000)!
An expansion vessel according to HVAC Designer requirements must be installed!
CONNECTING BUFFERS TO THE CENTRAL HEATING LOOP. EXAMPLES.

Buffers for central heating system are intended for heat accumulation and stratification with subsequent distribution of heat flows with different temperatures to the specific consumers. As an example, on Fig. 5/6/7 is shown high and low temperature heating realized by buffer. Heat demand is covered by gas boiler and solar collectors.
ATTENTION! The buffer is a part of a complete heating system that must be designed and checked by specialized and authorized personnel! The installation of a safety valve with the exact release rate is obligatory!!! The maximum designed pressure of the buffer is 3 Bars!
Expansion vessel, calculated by the designer, is a compulsory element of the installation!

CONNECTING THE SYSTEM TO THE MAIN WATER SUPPLY NETWORK

IMPORTANT! Connecting the waterheater to the main water supply network should be fulfilled in compliance with a project created by a hvac designer!
A Presence of WRITTEN DOCUMENT for additional components is required for warranty recognition! Only qualified technicians must install this device!
Installation of the device with one heat exchanger should be done in accordance with Fig. 6.

Installation of the storage tank with two heat exchangers should be done in accordance with Fig.7.

Models with hygienic coil only – Fig. 5.

OBLIGATORY elements of installations are:

• Inlet pipe.

• Main water tap.

• Pressure regulator. When pressure in the mains is over 6 bars it is required. In this case, the set pressure is according to the calculations of the designer, but should be not higher than 0.5 MPa! When pressure in the mains is under 6 bar, its presence is strongly recommended. In all cases the presence of a pressure regulator set at 0.4 MPa is important for the proper functioning of your device!

• Non-return valve. Its type should be defined by HVAC designer according to the local and European lows, standards and technical norms.

• Safety valve. Use only safety valves inside supplied kit. For schemes different than 5,6,7 safety valve must be defined by HVAC designer and have to be in accordance with the local and European lows, standards
  and technical norms. (Pnr = 0.8 МРа; EN 1489:2000). Valve dimensions acc.
  to Table.3.
  IMPORTANT : Between the storage tank and safety valve there must not be any kind of stop valves or taps!
  IMPORTANT : The presence of other /old/ safety valves may lead to a breakdown of your appliance and they must be removed.

• Safety valve drainage pipe. Must be implemented in accordance with the local and European lows, standards and technical norms. It must have sufficient slope for water runoff. Both ends should be open to the atmosphere and to be secured against frost. Take safety measures against burning when safety valve is open!. Fig. 8 a,b,c
  

• Water heater drainage.

• Drainage tap.

• Hose.

• Expansion vessel. In the storage tank there is no volume to accommodate the expansion of water due to its heating. The presence of the expansion vessel is obligatory in order not to lose water through the pressure relief valve! Its volume and type must be defined by HVAC designer and have to be in accordance with the system technical requirements, local and European lows, standards and technical norms. Its installation shall be carried out by a qualified technician in accordance with its operating instructions. Reference data on the volume of expansion vessel could be found in Table 4.

In order that you do not use the circulation outlet “R” and the outlets for the temperature sensors “TS1”, TS2” and “TS3” “TS4” as well as the outlet for the heating element “EE” is necessary to put an end caps before filling the water heater with water.
For models without heat exchanger – outlet marked with “AV” is intended for connection of air vent device which allows removing the air from the water tank. For long-lived service, it is advisory always to remove completely the air from the tank!
TO FILL UP THE STORAGE TANK is necessary to open the most distant tap, used for supplying hot water in the installation (of the mixing-faucet) and the tap for supplying cold water near it. When the water heater is full, from the cold water tap will continuously run water .
IN THE EVENT YOU MUST EMPTY THE STORAGE TANK , first you must cut off its power supplies if any. The inflow of water from the water mains must first be terminated and the most distant hot water tap of the mixing- faucet must be opened. Open the drainage tap for full emptying of water tank!
IMPORTANT! All of the above mentioned rules for tank connection to water mains are in relation of your safety! They comply with european and local regulations and are obligatory!

Manufacturer assumes no responsibility for problems resulting from incorrect assembly of the unit to the water supply net and because of using components with unknown origin, not with compliance to the local and European standards!

OPERATING MODE

Before using the buffer make sure that the appliance is connected with the heating installation in correct way and is filled with water.

PERIODIC MAINTENANCE

The manufacturer recommends preventive maintenance of your water heater every two years by an authorized service center or service base- **(Fig.9).

**

G 1/4
G3/4

Each preventive maintenance of the said type must be entered in the appliance’s warranty card and must outline date of performing the preventive maintenance, company performing the preventive maintenance, name of person performing the preventive maintenance, and signature.
IMPORTANT! Failure to comply with this requirement may terminate free warranty maintenance of your buffer. The manufacturer does not bare the responsibility for all consequences.
INSTRUCTIONS FOR ENVIRONMENTAL PROTECTION
Old appliances contain valuable materials and because of this should not be disposed with other products. To protect the environment we kindly ask you to surrender them in approved centers only!o surrender them in approved centers only.
If you cannot find your device model in the following tables, please refer to Annex III.

| V 500 75 HYG 5.0| V 800 99 HYG 5.5 HE| V 1000 99 HYG 5.5 HE| V 11S 500 75 HYG 5.0| V 10 S 800 99 HYG 5.5 HE| V 10 S 1000 99 HYG 5.5 HE| V 10/6 S2 800 95 HYG5.5 HE C| V 10/9 S2 1000 95 HYG 5.5 HE C
---|---|---|---|---|---|---|---|---
| V 800 95 HYG5.5 HE C| V 1000 95 HYG5.5 HE C| | V 10 S 800 95 HYG 5.5 HE C| V 10 S 1000 95 HYG 5.5 HE C| V 10/6 S2 800 99 HYG5.5 HE| V 10/9 S2 1000 99 HYG 5.5 HE
h| [mm]| 1677| 1932| 2132| 1677| 1933| 2132| 1932| 2132
b| [mm]| 820| 1053| 1092| 820| 1053| 1092| 1053| 1092
i| [mm]| –| –| –| 780| 780| 968| 780| 968
j| [mm]| –| –| –| 307| 412| 414| 412| 414
k| [mm]| 212| 292| 292| 212| 292| 294| 292| 294
q| [mm]| 1448| 1502| 1777| 1448| 1502| 1777| 1502| 1777
r| [mm]| 1036| 1122| 1306| 1036| 1122| 1306| 1122| 1306
s| [mm]| 624| 742| 835| 624| 742| 835| 742| 835
t| [mm]| 212| 362| 364| 212| 362| 364| 362| 364
R| [mm]| 1839| 1969| 2165| 1839| 1969| 2165| 1969| 2165
ØC| [mm]| 750| 990| 990| 750| 990| 990| 990| 990
ØD| [mm]| 650| 790| 790| 650| 790| 790| 790| 790

TABLE 2

Inlet cold water| CW| V 500 75 HYG 5.0 – G1V 800 99 HYG5.5 HЕ – G1 ¼ V 1000 99 HYG5.5 HE – G1 ¼ V 11S 500 75 HYG5.0 – G1V 10 S 800 99 HYG5.5 HE – G1 ¼ V 10 S 1000 99 HYG5.5 HE – G1 ¼V 10/6 S2 800 99 HYG5.5 HE – G1 ¼V 10/9 S2 1000 99 HYG5.5 HE – G1 ¼
---|---|---
 Outlet hot water| HW| V 500 75 HYG 5.0 – G1V 800 99 HYG5.5 HЕ – G1 ¼ V 1000 99 HYG5.5 HE – G1 ¼ V 11S 500 75 HYG5.0 – G1V 10 S 800 99 HYG5.5 HE – G1 ¼ V 10 S 1000 99 HYG5.5 HE – G1 ¼V 10/6 S2 800 99 HYG5.5 HE – G1 ¼V 10/9 S2 1000 99 HYG5.5 HE – G1 ¼
Thermos pocket Sensor| TS 1,2,3,4| G ½”
Inlet heat exchanger 2 /| L 1,2,3,4| G1 ½”
Inlet heat exchange 1| IS1| V 11S 500 75 HYG5.0 – G1″V 10 S 800 99 HYG5.5 HE – G1 ½” V 10 S 1000 99 HYG5.5 HE – G1 ½”V 10/6 S2 800 99 HYG5.5 HE – G1 ½”V 10/9 S2 1000 99 HYG5.5 HE – G1 ½”
Outlet heat exchange 1| OS1| V 11S 500 75 HYG5.0 – G1″V 10 S 800 99 HYG5.5 HE – G1 ½” V 10 S 1000 99 HYG5.5 HE – G1 ½”V 10/6 S2 800 99 HYG5.5 HE – G1 ½”V 10/9 S2 1000 99 HYG5.5 HE – G1 ½”
Inlet heat exchange 2| IS2| V 10/6 S2 800 99 HYG5.5 HE – G1″ V 10/9 S2 1000 99 HYG5.5 HE – G1″
Outlet heat exchange| OS2| V 10/6 S2 800 99 HYG5.5 HE – G1″ V 10/9 S2 1000 99 HYG5.5 HE – G1″
air vent| AV| G1 ½”
Electric heating element| EE| G1 ½”

TABLE 3

Mandatory inlet pressure control with external expansion vessel!
TABLE 4

Water heater volume.| Pressure at cold water inlet.| Minimum expansion vessel USEFUL VOLUME in ilters at water heater temperature.
---|---|---
Liter| (CW), Bar| 10 °C – 60 °C| 10 °C – 70 °C
200| 3| 7| 9
4| 8| 11
5| 12| 16
300| 3| 10| 13
4| 13| 17
5| 18| 24
500| 3| 17| 22
4| 21| 28
5| 29| 39
800| 3| 26| 36
4| 34| 45
5| 47| 63
1000| 3| 33| 45
4| 42| 57
5| 59| 79

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