Danfoss BV-40 Termix BV Floorstation User Guide

Danfoss BV-40 Termix BV Floorstation

Specifications

• Instantaneous water heater with heat exchanger
• Designed for floor-mounting
• High performance for large hot water demands
• Automatic controls for temperature regulation

Functional Description

• The Termix BV substation is an instantaneous water heater with a heat exchanger and automatic controls.
• It is designed for floor-mounting and is suitable for large apartment houses, sports arenas, and schools where significant amounts of hot water are required.

Application

• The Termix BV substation features superb heat extraction and high performance, making it ideal for locations with high hot water demands. The automatic controls ensure efficient operation.

Domestic Hot Water (DHW)

• The domestic hot water is prepared in a plate heat exchanger and regulated with automatic controls. Substations with high output feature two valves connected in a cascade to efficiently handle both small and large demands for hot water.

Domestic Hot Water Circulation

• The Termix BV substation comes with connections for DHW circulation, including a circulation pump and a nonreturn valve as standard equipment.

Product Usage Instructions

Mounting

To mount the Termix BV – Floorstation, follow the steps outlined in the manual:

1. Refer to section 4.1 for detailed mounting instructions.
2. Ensure proper installation to prevent any issues during operation.

Electrical Connections

For electrical connections, refer to section 4.2 of the manual for detailed guidance on connecting the unit to the power supply safely and effectively.

Controls

The Termix BV – Floorstation features various controls including:

• DHW temperature control (refer to section 6.1)
• Maintenance procedures (refer to section 6.3)
• Other controls as specified in section 6.2

Troubleshooting

• If you encounter any issues with the Termix BV – Floorstation, refer to the troubleshooting section in the manual for general problem-solving tips (section 7.1). Specific troubleshooting steps for DHW issues are outlined in section 7.2.

Frequently Asked Questions (FAQ)

Q: What should I do if the Termix BV – Floorstation is not heating water?

• A: If the unit is not heating water, check the power supply, and thermostat settings, and ensure proper water flow through the system. Refer to the troubleshooting section in the manual for detailed steps.

Functional description

• Instantaneous water heater with heat exchanger and automatic controls.
• Designed for floor-mounting.

Application

• The Termix BV substation is an instantaneous water heater featuring superb heat extraction and high performance.
• The substation is delivered with automatic controls. The Termix BV is suitable for large apartment houses, sports arenas, and schools, where large amounts of hot water are needed.

Domestic hot water (DHW)

• The domestic hot water is prepared in a plate heat exchanger and the temperature is regulated with automatic controls.
• The substations with high output are controlled with two valves connected in cascade to control both small and large demands for hot water in an efficient manner.

Domestic hot water circulation

• The Termix BV substation is supplied with connections for DHW circulation including a circulation pump and a nonreturn valve as a standard.

Safety notes

Safety Notes – general

• The following instructions refer to the standard design of the substation. Special versions of substations are available on request.
• This operating manual should be read carefully before installation and start-up of the substation. The manufacturer accepts no liability for damage or faults that result from non-compliance with the operating manual.
• Please read and follow all the instructions carefully to prevent accidents, injury, and property damage. Assembly, start-up, and maintenance work must be performed by qualified and authorized personnel only.
• Please comply with the instructions issued by the system manufacturer or system operator.

Corrosion protection

• All pipes and components are made of stainless steel and brass. The maximum chloride compounds of the flow medium should not be higher than 150 mg/l.
• The risk of equipment corrosion increases considerably if the recommended level of permissible chloride compounds is exceeded.

Energy source

• The substation is designed for district heating as the primary source of energy. However, also other energy sources can be used where the operating conditions allow it and always are comparable to district heating.

Application

• The substation is designed to be connected to the house installation in a frost-free room, where the temperature does not exceed 50 °C and the humidity does not exceed 60%.
• Do not cover or wall up the substation or in any other way block the entrance to the station.

Choice of material

• Choice of materials always in compliance with local legislation.

Safety valve(s)

• We recommend mounting of safety valve(s), however, always in compliance with local regulations.

Connection

• The substation must be equipped with features that ensure that the substation can be separated from all energy sources (also power supply).

Emergency

• In case of danger or accidents – fire, leaks, or other dangerous circumstances – interrupt all energy sources to the station if possible, and seek expert help.
• In case of discolored or bad-smelling domestic hot water, close all shut-off valves on the substation, inform the operating personnel and call for expert help immediately.

REACH

• All Danfoss A/S products fulfill the requirements in REACH.
• One of the obligations in REACH is to inform customers about the presence of Candidate list substances if any, we hereby inform you about one substance on the candidate list:
• The product contains brass parts that contain lead (CAS no: 7439-92-1) in a concentration above 0.1% w/w.

Storage

• Any storage of the substation that may be necessary before installation should be in conditions that are dry and heated.

Authorized personnel only

• Assembly, start-up, and maintenance work must be performed by qualified and authorized personnel only.

Please observe instructions carefully

• To avoid injury to persons and damage to the device, it is necessary to read and observe these instructions.

Warning of high pressure and temperature

• Be aware of the installation’s permissible system pressure and temperature.
• The maximum temperature of the flow medium in the substation is 120 °C.
• The maximum operating pressure of the substation is 16 bar.
• The risk of persons being injured and equipment damaged increases considerably if the recommended permissible operating parameters are exceeded.
• The substation installation must be equipped with safety valves, however, always under local regulations.

Warning of hot surface

• The substation has hot surfaces, which can cause skin burns. Please be extremely cautious close to the substation.
• Power failure can result in the motor valves being stuck in the open position. The surfaces of the substation can get hot, which can cause skin burns.
• The ball valves on the district heating supply and return should be closed.

Warning of transport damage

• Before substation installation, please make sure that the substation has not been damaged during transport.

IMPORTANT – Tightening of connections

• Due to vibrations during transport, all flange connections, screw joints, and electrical clamp and screw connections must be checked and tightened before water is added to the system.
• After water has been added to the system and the system has been put into operation, re-tighten ALL ALL ALL connections.

Mounting

• Installation must comply with local standards and regulations.
• District heating (DH) – In the following sections, DH refers to the heat source that supplies the substations.
• A variety of energy sources, such as oil, gas, or solar power, could be used as the primary supply to Danfoss substations.
• For the sake of simplicity, DH can be taken to mean the primary supply.

Connections:

1. Domestic hot water (DHW)
2. Domestic cold water (DCW)
3. Hot water circulation (HCW)
4. District heating (DH) supply
5. District heating (DH) return

Authorized personnel only

Assembly, start-up, and maintenance work must be performed by qualified and authorized personnel only.

• The pipe placement can deviate from the shown drawing.
• Please note the markings on the station.

Installation

Mounting Adequate space

• Please allow adequate space around the substation for mounting and maintenance purposes.

Orientation

• The station must be mounted so that components, keyholes, and labels are placed correctly. If you wish to mount the station differently please contact your supplier.

Drillings

• Where substations are to be wall-mounted, drillings are provided in the back mounting plate. Floor-mounted units have support.

Labeling

• Each connection on the substation is labeled.

Before installation Clean and rinse

• Before installation, all substation pipes and connections should be cleaned and rinsed.

Tightening

• Due to vibration during transport, all substation connections must be checked and tightened before installation.

Unused connections

• Unused connections and shut-off valves must be sealed with a plug. Should the plugs require removal, this must only be done by an authorized service technician.

Installation Strainer

• If a strainer is supplied with the station it must be fitted according to the schematic diagram. Please note that the strainer may be supplied loose.

Connections

• Internal installation and district heating pipe connections must be made using threaded, flanged, or welded connections.

Electrical connections

Before making electrical connections, please note the following:

Safety notes

• Please read the relevant parts of the safety notes.

230 V

• The substation must be connected to 230 V AC and earth.

Potential bonding

• Potential bonding should be carried out according to 60364-4-41:2007 and IEC 60364-5-54:2011.
• The bonding point on the mounting plate below the right corner is marked with the earth symbol.

Disconnection

• The substation must be electrically connected so that it can be disconnected for repairs.

Outdoor temperature sensor

• Outdoor sensors should be mounted so as to avoid exposure to direct sunlight. They should not be placed close to doors, windows, or ventilation outlets.
• The outdoor sensor must be connected to the station on the terminal block under the electronic control.

Authorized electrician

• Electrical connections must be made by an authorized electrician only.

Local standards

• Electrical connections must be made under current regulations and local standards.

Design

Your substation might look different than the substation shown.

Design Description

• B Heat exchanger, DHW
• G Electronic controller, DHW
• 2 Single check valve
• 4 Safety valve
• 11 Domestic hot water pump
• 20 Filling/drain valve
• 27 Actuator
• 30 Flow control with control valve
• 36 Balancing valve

Schematic diagram

Your substation might look different than the schematic diagram shown.

Schematic description

• B Heat exchanger, DHW
• G Electronic controller, DHW
• 1 Ball valve
• 2 Single check valve
• 4 Safety valve
• 11 Domestic hot water pump
• 19 Surface sensor
• 20 Filling/drain valve
• 27 Actuator
• 30 Flow control with control valve
• 36 Balancing valve
• 40 Immersion sensor
• DHW: Domestic Hot Water
• DCW: Domestic Cold Water
• HWC: Hot Water Circulation
• DH Supply: District Heating Supply
• DH Return: District Heating Return

Technical parameters

• Nominal pressure: PN 16
• Max. DH supply temperature: 120 °C
• Min. DCW static pressure: 0.5 bar
• Brazing material (HEX): Copper
• Heat exchangers test   pressure: 30 bar
• Sound level: K 55 dB

Controls

• DHW temperature control
• DHW temperature control
• There are various types of DHW temperature control used in Danfoss substations.
• DHW temperature should be adjusted to 45-50 °C, as this provides optimal utilization of DH water. At DHW temperatures above 55 °C, the possibility of limescale deposits increases significantly.

Electronic control

• Substations with electronic control must be set in accordance with the manufacturer´s instructions.
• Where the room temperature is controlled by radiator thermostats, it is recommended that thermostats be set for minimum temperature in each room.

Electric 2–way motorized valve

• Actuators with or without safety functions are available for 3-point controls. Spring-return actuators can be used to provide safety shut-off in the event of power failure.

Flow controller with integrated control valve

• The controller is a self-acting flow controller with an integrated control valve.
• The controller closes when set to max. flow is exceeded and can be used in combination with.
• Danfoss electrical actuators with or without safety function.
• Spring return motor can be used as a safety function by power failure.

Domestic hot water pump

Important!

• It is necessary to mount a domestic hot water circulation pump on the water heater to avoid regulation problems.
• The circulation pump can not be switched off, since this will result in regulation problems. (no flow at the sensor).

Other Safety valve

• The purpose of the safety valve is to protect the substation from excessive pressure.
• The blow-off pipe from the safety valve must not be closed. The blow-off pipe outlet should be placed so that it discharges freely and it is possible to observe any dripping from the safety valve.
• It is recommended to check the operation of safety valves at intervals of 6 months. This is done by turning the valve head in the direction indicated.

Maintenance

• The substation requires little monitoring, apart from routine checks. It is recommended to read the energy meter at regular intervals and to write down the meter readings.
• Regular inspections of the substation according to this Instruction are recommended, which should include:

Strainers

• Cleaning of strainers.

Meters

• Checking of all operating parameters such as meter readings.

Temperatures

• Checking of all temperatures, such as DH supply temperature and DHW temperature.

Connections

• Checking all connections for leakages.

Safety valves

• The operation of the safety valves should be checked by turning the valve head in the indicated direction.

Venting

• Checking that the system is thoroughly vented.
• Inspections should be carried out a minimum of every two years.
• Spare parts can be ordered from Danfoss. Please ensure that any enquiry includes the substation serial number.

Authorized personnel only

• Assembly, start-up, and maintenance work must be performed by qualified and authorized personnel only.

Troubleshooting

Troubleshooting in general

• In the event of operating disturbances, the following basic features should be checked before carrying out actual troubleshooting:
• the substation is connected to electricity,
• the strainer on the DH supply pipe is clean,
• the supply temperature of the DH is at the normal level (summer, at least 60 °C – winter, at least 70 °C),
• the differential pressure is equal to or higher than the normal (local) differential pressure in the DH network – if in doubt, ask the DH plant supervisor,
• pressure on the system – check the HE pressure gauge.

Authorized personnel only

• Assembly, start-up, and maintenance work must be performed by qualified and authorized personnel only.

Troubleshooting DHW

strainer(s).
DHW circulation pump out of order or with too low a setting.| Check the circulation pump.
Defective or clogged non-return valve.| Replace – clean.
No electricity.| Check.
Wrong setting of automatic controls, if any.| To adjust an electronic controller for DHW, pls. note the enclosed instructions for the electronic controller.
Scaling of the plate heat exchanger.| Replace – rinse out.
Defective motorized valve.| Check (use manual function) – replace.
Defective temperature sensors.| Check – replace.
Defective controller.| Check – replace.
Hot water in some taps but not in all.| DCW is being mixed with the DHW, e.g. in a defective thermostatic mixing valve.| Check – replace.
The defective or clogged non-return valve on the circulation valve.| Replace – clean.
Tap temperature too high; DHW tap load too high.| The thermostatic valve was adjusted to a too-high level.| Check – set.
The temperature drops during tapping.| Scaling of the plate heat exchanger.| Replace – rinse out.
Larger DHW flow than the substation has been designed for.| Reduce DHW flow.
The thermostatic control valve does not close| The temperature difference between the DH supply and the DHW set point is too low.| Lower the set point temperature or increase the DH supply temperature.

Disposal note

• This symbol on the product indicates that it may not be disposed of as household waste..
• It must be handed over to the applicable take-back scheme for the recycling of electrical and electronic equipment.
• Dispose of the product through channels provided for this purpose.
• Comply with all local and currently applicable laws and regulations.

Declaration

Declaration of conformity Substationlabel

• Normally the below-mentioned declaration of conformity applies: Substations – Category 0 with electrical equipment”.
• Unless fitted with a yellow label (PED KAT. 1) on the substation label then the following declaration of conformity applies: “Substations – Category 1 with electrical equipment”.

EU DECLARATION OF CONFORMITY

• Gemina Termix A/S
• Member of the Danfoss Group
• danfoss.com
• +45 9714 1444
• mail@termix.dk
• Any issues describe a very smitten. and whether mael avala be in writing orally, electronically, online design Downie, sa be considered informative, and cal binding and toenails, Dantoss reserves the right to ater is products without notice.
• This also applies to products ordered but not delivered provided that such alterations can be made without changes to the form, it or.
• All trademarks in this material are property of Danfoss A/S or Danfoss group companies. Danfoss and the Danfoss logo are trademarks of Danfoss A/S. All rights reserved.

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