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VX Solo HWS
Operating guide
28 pgs6.75 Mb0
Fact sheet
2 pgs642.13 Kb0

Danfoss VX Solo HWS Operating guide

MAKING MODERN LIVING POSSIBLE
Danfoss District Energy
VX Solo HWS
Instructions for installation and use
Instructions for installation and use VX Solo HWS substations
VX Solo HWS, thermostatic control 1 HE circuit + secondary connec­tion for DHW cylinder
VX Solo HWS, thermostatic control 1 HE circuit + secondary connec­tion for DHW cylinder, with cover
1. Contents
1.0 Contents .......................................................................................................................................................................................................................................2
2.0 Product introduction ............................................................................................................................................................................................................... 3
3.0 Dimensional sketch / connections .....................................................................................................................................................................................4
4.0 Enduser instructions, General ..............................................................................................................................................................................................5
5.0 Enduser instructions, Adjustment and Setting .............................................................................................................................................................6
6.0 Installation instructions, Safety and Handling ...............................................................................................................................................................7
7.0 Installation instructions - Getting started ....................................................................................................................................................................... 8
8.0 Description of VX Solo HWS .................................................................................................................................................................................................9
9.0 Installation instructions, general ........................................................................................................................................................................................9
10.0 Commissioning and start-up, VX Solo HWS ................................................................................................................................................................ 13
11.0 Domestic hot water cylinder ............................................................................................................................................................................................ 16
12.0 Maintenance ........................................................................................................................................................................................................................... 17
13.0 Troubleshooting .................................................................................................................................................................................................................... 19
14.1 Troubleshooting - Heating ....................................................................................................................................................................................... 19
14.0 EU Declaration of Conformity .......................................................................................................................................................................................... 23
15.0 Commissioning Certicate ................................................................................................................................................................................................ 24
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DKDHR VI.HE.M1.02 Danfoss District Energy
Instructions for installation and use VX Solo HWS substations
2.0 Product introduction
2.1 VX Solo HWS (thermostatic control and terminal box) - 1 HE circuit + sec. connection for DHW cylinder
Supply limit
Storage cylinder
Top:
Cylinder supply
Common return
Radiator return
DH
1 Plate heat exchanger, HE, insulated 4 Dierential pressure controller AVPL 5 Dirt strainer 8 Circulation pump, HE 11 Safety valve, HE 2.5 bar 13 Thermometer 14 Pocket for pressure gauge ¼ 15 Manometer 16 Expansion vessel 12 L
supply
DH return
Principal components
1 Plate heat exchanger HE 4 Dierential pressure controller 8 Circulation pump, HE 11 Safety valve HE 15 Manometer 16 Expansion vessel 17 Air valve 19 Fill valve 24 Fitting piece for heat meter 30 Thermostat Danfoss AVTB 30-100 °C 52 Zone valve Danfoss VMT/TWA-V 60 Terminal box
17 Air valve 19 Fill valve / Tapping point 23 Sensor pocket for heat meter ½“ 24 Fitting piece for heat meter, 3/4” x 110 mm 30 Thermostat AVTB 30-100 °C 52 Zone valve Danfoss VMT/TWA-V 60 Terminal box
---------------------------------------------------
Terminal box is prepared for wiring of electronic programmable room thermostat TP9000 for heating or DHW operation according to demand.
Secondary
Common return
Cylinder supply
52
1 8
17
52
19
DH return
Bottom:
HE Supply
Primary
DH supply
15
16
30
11
60
4
24
52
HE supply
Secondary
Danfoss District Energy VI.HE.M1.02 DKDHR
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Instructions for installation and use VX Solo HWS substations
3.0 Dimensional sketch / connections
Dimensions:
Dimensions without cover H 850 x W 560 x D 350 mm
Dimensions with cover H 1000 x W 600 x D 400 mm
Connections:
Order: 1 Cylinder (DHW) supply 2 Common return 3 District heating (DH) return 4 District heating (DH) supply 5 Heating (HE) supply
Connections size:
DH: G¾” (IT) HE: G¾” (IT) Cylinder: G¾” (IT)
Zirk.
Wall
top view
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DKDHR VI.HE.M1.02 Danfoss District Energy
Instructions for installation and use VX Solo HWS substations
4.0 Enduser instructions, General
Instructions
Please read these instructions carefully before installing and commis­sioning this substation. The manufacturer accepts no liability for loss or damage resulting from failure to comply with these instructions for use. Read and follow these instructions carefully to prevent the risk of physical injury and/or damage to property. Exceeding the recommended operating parameters appreciably increases the risk of personal injury and/or damage to property.
Warning! Hot surfaces
Parts of the substation may be very hot and can cause burn in­juries. Be very careful when you are in the immediate vicinity of the unit.
Installation, commissioning and maintenance must be carried out by qualied and authorised personnel (both plumbing and electri­cal work). Once the station has been installed and is operating, there is nor- mally no need to alter the settings or other functions. The district heating substation is very reliable and easy to operate.
If necessary, you can change the temperature settings as described on page 6. For more detailed information about the substation, see the sections concerning installation and commissioning.
Description
These instructions apply to substation type VX Solo HWS, which is a district heating substation for indirect heating for single-family houses, semi-detatched and terraced houses as well as ats. With one heating circuit for radiator and/or oor heating and with con­nection pipes for domestic hot water cylinder on secondary side. For wall-mounting.
The HE supply temperature is controlled by a self-acting temperature controller Danfoss AVTB. An immersion control thermostat of your choice choice, used to control the water temperature in the hot water cylinder, must be mounted on site. As optional supply, Danfoss oers an immersion control thermostat type ITC, which must be ordered separately and supplied loose to­gether with the substation for mounting on site. The ITC must be mounted in the 2/3 point of the DHW cylinder.
Warnings about high pressure and high temperature
The maximum supply temperature in the district heating net­work can be up to 110°C and the operating pressure can be up to 16 bar. This may result in a risk of scalding from touching the substation and from outow of the medium (water/steam). Ex­ceeding the substation design data and operating parameters for pressure and temperature carries an appreciable risk of personal injury and/or damage to property.
Emergencies
In the event of re, leaks or other hazards, immediately shut o all sources of energy to the substation, if possible, and call for appropriate assistance. If the domestic hot water is discoloured or malodorous, shut o all ball valves on the substation and the storage cylinder, notify all users and call for professional assistance without delay.
The VX Solo HWS is specicly prepared for connection of a TP9000 programmable room thermostat / DHW time controller, which allows heating and DHW operation according to demand. The integrated room thermostat will open/close the zone valve for heating opera­tion and the DHW sensor in the cylinder or the DHW timer will open/ close the zone valve for DHW operation.
We recommend regular inspections of the substation - ideally in connection with readings of the district heating meter. Pay special attention to any leaks and an excessively high return temperature in the district heating circuit (poor cooling of the district heating water). Cooling – i.e. the dierence between the supply and return temperature of the district heating water – has a signicant ef­fect on the overall energy economy. Therefore, it is important to focus on the supply and return temperature in the heating system. The dierence should typically be 30–35°C in systems that operate with radiators.
Irregularities
When reading the meters, check all joints and connections for leaks.
Check the troubleshooting section before contacting your pro­fessional provider.
Danfoss District Energy VI.HE.M1.02 DKDHR
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Instructions for installation and use VX Solo HWS substations
5.0 Enduser instructions, Adjustment and Setting
Heating circuit, Dierential Pressure Controller
The dierential pressure controller (Fig. 1) reduces the high, uctuat­ing pressure in the district heating network to a constant operating pressure. The TD200 dierential pressure controller is preset from factory and should not be adjusted afterwards.
Heating circuit, Temperature control
Thermostatic control
The HE temperature is controlled by a self-acting temperature control­ler Danfoss AVTB (Fig. 2). The controller has a control valve, thermostatic actuator and handle for temperature setting. The thermostat will be set by the installer in connection with the com­missioning, but it may be necessary to adjust it subsequently depend­ing on the outdoor temperature. Approximate thermostat scale settings:
1.0 = 35 °C
1.5 = 45 °C
2.0 = 55 °C
2.5 = 65 °C
3.0 = 75 °C
The setting values may vary depending on the operating conditions. It is important to set the supply temperature to the radiators as low as possible. Use the radiator thermostat to regulate the room tem­perature.
Other variations with other types of thermostatic valves for control of the heating circuit may occur.
Fig. 1
TD200
Fig. 2
AVTB
Pump. VX Solo HWS substations are factory tted with a pump (Fig. 3). The pump setting is established in connection with the commissioning. Generally speaking, this setting is not to be altered. If it should neverthe­less be necessary to change the pump setting, see the section concern­ing pumps in the installation and commissioning sections regarding the individual products.
Programmable Room thermostat / DHW time controller TP9000
The VX Solo HWS is specicly prepared for connection of a TP9000 controller (Fig. 4), which allows heating and DHW operation accord­ing to demand. The TP9000 comes with a factory preset clock with automatic sum­mer/winter time changes, and at installation the TP9000 is set to operate in either full 7 day, 5 day/2 day mode, which allows dierent programmes to be set for the weekend, or in 24 hour mode, in which case the programmed events are repeated every 24 hours.
There is normally no need to alter the settings or other functions. How­ever, should this be necessary, we recommend that you contact your professional provider, or refer to separate instructions for TP9000.
Immersion Control Thermostat (mounting on site)
An applicable immersion control thermostat of your choice choice must be mounted in the 2/3 point of the DHW cylinder.
An immersion control thermostat oers secure immersion sensing, and is used to control water temperature in the hot water cylinder.
Fig. 3
Fig. 4
Fig. 5
As optional supply, Danfoss oers an immersion control thermostat type ITC (Fig. 5), which must be ordered separately and supplied loose with the substation for mounting on site. The immersion thermostat has a 100mm insertion length and is sup­plied with a ½”BSP/100mm pocket. It has an adjustment range of 0-90°C has SPDT contact. Recommended setting is 60 °C.
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DKDHR VI.HE.M1.02 Danfoss District Energy
Immersion Control Thermostat ITC for cylinder - 132.886 - Code No. 099-1057
Instructions for installation and use VX Solo HWS substations
6.0 Installation instructions, Safety and Handling
Instructions
Please read these instructions carefully before installing and comis­sioning this substation. The manufacturer accepts no liability for loss or damage resulting from failure to comply with these instructions for use. Read and follow these instructions carefully to prevent the risk of physi­cal injury and/or damage to persons and property. Exceeding the re­commended operating parameters considerably increases the risk of personal injury and/or damage to property. Installation, commissioning and maintenance must be carried out by qualied and authorized personnel in compliance with the local safety regulations.
Connection
It must be possible to cut o all energy sources to the unit - includ­ing electrical connections - at all times.
Warning! Hot surfaces
Parts of the substation may be very hot and can cause burn inju­ries. Be very careful when you are in the immediate vicinity of the substation.
Once the station has been installed and is operating, there is normally no need to alter the settings or other functions. The district heating substation is very reliable and easy to operate.
Energy source
The substation is primarily designed for connection to district heating. Alternative energy sources can be used if the operating conditions are equivalent to district heating at all times.
Application
The substation is designed only to operate with water or a water-glycol mixture (up to 40%), and other heating media may not be used. The substation is to be connected to the household piping in a frost-free room, where the temperature does not exceed 50 °C and the relative humidity is not higher than 80%. The substation must no be covered, bricked in or otherwise cut o from access.
Choise of materials
Only use materials, that comply with local regulations.
Corrosion
The maximum chloride compounds of the medium must not be higher than 300 mg/l. The risk of corrosion increases considerably if the recom­mended chloride content is exceeded.
Safety valve(s)
Installation of safety valve(s) must always be in compliance with local regulations.
Noise level.
≤ 55 dB.
Warning of high pressure and high temperature
The maximum supply temperature in the district heating network can be up to 110°C and the operating pressure can be up to 16 bar. This may result in a risk of scalding from touching the substation and from outow of the medium (water/steam). Exceeding the substation design data and operating parameters for pressure and temperature carries an appreciable risk of personal injury and/or damage to property.
Emergencies
In the event of re, leaks or other hazards, immediately shut o all sources of energy to the substation, if possible and call for appropri­ate assistance. If the domestic hot water is discoloured or malodorous, shut o all ball valves on the substation, notify all users and call for professional assistance immediately.
Warning of damage during transport
On reception of the substation, and before installing it, check for any evidence of damage during transport. The substation must be handled and moved with the greatest care and attention.
NB! - Tightening of connections
Before mounting of the substation, ALL pipe connections MUST be retightened, as vibrations during transport may have caused leaks. Once the substation has been put into operation ALL pipe connections MUST be pressure tested for leaks and retightened once more if necessary. DO NOT OVERTIGHTEN THE PIPE CONNECTIONS – see page 9, “Test & connections” for more information.
Storage
Before installation, the units must be stored in a dry, heated (i.e. frost­free) room. (Relative humidity max. 80% and storage temperature 5-70 °C).
The units must not be stacked higher than the limit at the factory (max. 8 layers) Units supplied in cardboard packaging must be lifted using the handles incorporated in the packaging. Units must be placed on pallets for transport/moving across large distances. As far as possible, do not lift the substation by the pipes. Lifting by the pipes may cause leaks. REMEMBER to retighten.
Disposal
Dispose of the packaging in accordance with the local regulations for disposal of used packaging materials.
The substation is made of materials that cannot be disposed of together with household waste. Close all energy sources and disconnect all connection pipes. Disconnect and dismantle the product for disposal in accordance with the applicable local regulations for the disposal of the individual components.
Danfoss District Energy VI.HE.M1.02 DKDHR
Handling
We recommend that you wear suitable safety footwear while handling and installing the substation.
77
Instructions for installation and use VX Solo HWS substations
7.0 Installation instructions - Getting started
Connect the substation to the household piping in accordance with the labelling at the bottom/top and/or in accordance with the instruc­tions in this manual.
Commissioning:
1. The substation is prepared for wall mounting. Mount the sub­station on a solid wall using two sturdy bolts, screws, expan­sion bolts or similar.
2. Mount immersion control thermostat (either type ITC, which can be supplied loose from Danfoss as an option or any other appli­cable thermostat) and wire this to the terminal box according to wiring diagram on page 11.
3. Mount programmable controller TP9000 (to be ordered separate­ly) and wire this to the terminal box according to wiring diagram on page 11.
4. Close all shut-o valves (to be ordered separately) on the sub­station before connecting it/them to the household piping.
5. Mount the district heating meter (see page 10).
6. IMPORTANT! Tighten all pipe connections, as they may have loosened during transport and handling.
7. On systems that feature a safety valve, establish a drain con­nection in compliance with the applicable legislation.
8. Fill the heat exchanger/ the system with water according to the instructions on page 12 until the manometer shows a working pressure, which corresponds to the system height + approx. 5 m (approx. 1.2 - 1.5 bar).
9. Check the substation and the household piping thoroughly for leaks.
10. Pressure test the entire system for leaks in accordance with the applicable regulations.
11. Connect the terminal box to the electricity supply, but do not switch on the power.
12. Heat the system and vent the radiator circuit/heating side thoroughly on the radiators and the air valve, if any.
13. Remove the red split on the position indicator of the zone valve.
14. Now switch on the power.
15. Finish by adjusting the substation in accordance with the instruction manuals.
Heating and cooling the substation may cause leaks. Therefore it may be necessary to retighten the connections in the period after commissioning.
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DKDHR VI.HE.M1.02 Danfoss District Energy
Instructions for installation and use VX Solo HWS substations
8.0 Description of VX Solo HWS
Substation for indirect heating for single-family, semi-detatched and terraced houses as well as ats. With one heating circuit for ra­diator or oor heating and with connection pipes for domestic hot water cylinder on the secondary side. For wall-mounting.
The temperature for the heating circuit is controlled by a self-acting temperature controller Danfoss AVTB.
An applicable immersion control thermostat of your choice, used to control the water temperature in the hot water cylinder must be mounted on site. Danfoss oers an immersion control thermostat type ITC, which must be ordered separately and supplied loose with the substation for mounting on site.
The substation is prepared for mounting of a programmable TP9000 controller, which allows heating and DHW operation according to demand. The integrated room thermostat will open/close the zone valve for heating operation and the DHW sensor in the cylinder or the DHW timer will open/close the zone valve for DHW operation.
Please note: Your substation may look dierent than the substation shown, as vari­ants with other components may be supplied. Supplier instructions for the tted components will always be supplied together with the substation.
9.0 Installation instructions, general
Installation
The installation, connection and maintenance of the substation must be performed by qualied and authorised personnel. Installation must always be performed in accordance with the ap­plicable legislation and in compliance with these instructions. The substation must be installed so that it is freely accessible and can be maintained without unnecessary disruption. Lift the substation by its mounting plate and secure it to a solid wall using 2 sturdy bolts, screws or expansion bolts positioned in the two keyholes in the mounting plate. Before commissioning, rinse all the pipes in the household piping system thoroughly to remove any impurities, and check and clean the dirt strainers in the substation. Connect the substation to the household piping in accordance with the labelling at the bottom/top and/or in accordance with the instruc­tions in this manual.
Test and connections
Before lling the system with water, retighten all the pipe connections because vibrations and shocks during transport and handling may have caused leaks. Once the system has been lled with water, tighten all the pipe connections once more before performing pressure test for leaks. After heating of the system, check all the connections and retighten if necessary. Please note that the connections feature EPDM rubber gaskets! Therefore, it is important that you DO NOT OVERTIGHTEN the union nuts. Over-tightening may result in leaks. Leaks caused by over­tightening or failure to retighten connections are not covered by the warranty.
Connections
Connection of pipes for DH supply and return, common return as well as DHW cylinder is established in top of the substation, and connec­tion of pipe for HE supply is established in bottom of the substation.
Danfoss District Energy VI.HE.M1.02 DKDHR
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