Budget air supply unit for a cottage in combination with a ducted water heater. Air-handling units with water heating Compact air-air units with water heater

VKJet-W-800 is an air handling unit with compact dimensions. Basic structural elements equipment – water heat exchanger, filter element, fan. Modified W-1200 has two fans installed, increasing air flow.

Design

The single-phase fan has a power rating of 355 W.

• The heat exchanger has a plate design, a body made of copper and aluminum with standard sizes sections: 400x200 mm. Water or anti-freezing compounds are used as a coolant.

• The highest temperature indicator of coolants is 150 degrees Celsius, pressure is up to 1 MPa.

• The heat exchanger body is equipped with holes through which liquid is drained or air is released.

• The size of the connection pipes is G1”.

Installation features

1. VKJet-W is easy and quick to install. For fastening, the brackets with which the housing is equipped are used. To connect the equipment to the air ducts, two outlets with a diameter of 200 mm are used.
2. It is best to connect the installation using flexible soundproof air ducts.
3. The installation can operate in any type of spatial orientation. To change the filter element, the service panel must be removed.
4. The optimal position of the equipment is suspended.
5. To achieve the preferred parameters of noise insulation and aerodynamics, during installation you should provide an even section of air duct (approximately 1 m long) that will pass after the exhaust of the VKJet-W-800.
6. Equipment weight: VKJet-W-800 – 39 kg, VKJet-W-1200 – 42 kg.

The main goal when developing Kolibri-1000 Water EC was to create a reliable modern installation with maximum protection against heater defrosting, but at the same time absolutely unpretentious in operation. The task was also to make it so complete and self-adjusting that its installation did not require special professional skills.

It was possible to easily match the hydraulic characteristics of the installation’s mixing unit with the characteristics of various water supply systems without the use of expensive differential pressure gauges and precision balancing valves. Together with specialists from Danfoss, a scheme of a mixing unit with automatic equalization of resistance on a three-way valve was developed by installing an automatic bypass valve at the inlet. Thus, the equipment arrives to the consumer fully configured at the factory and does not require additional adjustments at the time of installation.

Water or ethylene glycol with inhibitors can be used as a coolant.

Distinctive features

Ready-to-use device with self-tuning functions
Compact dimensions
Low noise level
EC fan with built-in shock absorbers
The most reliable European components
Intelligent control system with LCD touch color display manufactured by GTC
Efficient, compact four-row heater
Built-in air valve equipped with a Belimo electric drive (Switzerland) with a return spring that forcibly closes the valve when the unit is de-energized or when there is a threat of defrosting of the heater
A dust filter sealing mechanism that prevents the penetration of small dust particles bypassing the filter
Determining the degree of clogging of the dust filter
Automatic deaeration system consisting of 2 automatic air release valves
Additional protection of water temperature at the inlet to the mixing unit
A three-way seat valve, controlled automatically, regulates the amount of coolant in the mixing unit. Unlike commonly used rotary valves, seat valves are characterized by higher control accuracy, durability, and these valves are practically not subject to “souring” during long periods of inactivity, for example during the warm season
Balancing valve with liquid flow meter for adjusting water flow through the mixing unit. It is used in cases where it is not desirable to drain superheated water passing through the bypass of the mixing unit and the bypass valve into the return line.

Execution option - left and right





• In Moscow and the region:

  Delivery of orders throughout Moscow and the region takes 1-2 business days on average. Product delivery time: Mon.-Sat. from 09.00-20.00
  The cost of delivery in Moscow within the Moscow Ring Road is 0 - 1000 rubles, outside the Moscow Ring Road + 35 rubles/km to the standard cost. When purchasing 3 or more air conditioners, DELIVERY is FREE within the Moscow Ring Road, outside the Moscow Ring Road 35 rubles/km.

  In Russia:

  Delivery of purchased goods to the regions is carried out using transport companies at your choice. It is carried out on 100% prepayment, the period is from 2-3 days from the date of receipt of payment, depending on the remoteness of the destination and the method of dispatch (road-railway-air). Total cost according to TK tariffs + delivery cost in Moscow.

• Standard installation based on split systems and multi-split systems (wall-mounted, cassette, duct and floor-ceiling) includes:
  1. Five (5 m.p.) meters of interblock communications (copper freon pipe, insulation, corrugated drainage pipe, interblock cable).
  2. Brackets for the outdoor unit – set (2 pcs.)
  3. Drilling a hole in the wall 400-700 mm - 1 pc.
  4. Electrical cable -3 m + Euro plug.
  5. Fasteners
  6. Vacuuming the freon pipeline route.
  7. Commissioning works.
  More than 5 m of interblock communications is considered additional installation and is calculated individually depending on the type and power of the split system.

Climate series represents the currently most popular class of ventilation equipment combining the system supply and exhaust ventilation and an air conditioner in a compact heat-insulated housing with a built-in automation system.

We all know that indoor AIR QUALITY is determined not only by the amount of oxygen, but - to a large extent - by the absence of mechanical (dust), chemical (evaporation from furniture, construction and finishing materials), organic (smoke, pollen, microscopic mites) and other contaminants. Supply and exhaust ventilation systems help improve the QUALITY and COMFORT of the microclimate around us.

The main purpose of the universal Climate direct-flow system (without recirculation) supplying purified heated or cooled outdoor air into the room with automatic maintenance of the user-specified room temperature.

• The installation maintains the necessary balance of supply and exhaust air in the serviced room or creates the desired imbalance.
• Through the air duct system, fresh, filtered, heated or cooled air flows into your room.
• The spent air is moist and filled with evaporation and is thrown out.
• Thus, both day and night the apartment (house, office) is ventilated even when all the windows are closed.
• Fresh air improves performance while reducing the risk of colds and allergic infectious diseases.

L- The inflow is on the left when looking at the installation from the street.

R- The inflow is on the right when looking at the installation from the street.

**E- electrical heater (electric heater)

***W- water heater (water heater)

**** Climate 31,35,38 units are supplied with built-in shut-off valves.

***** for Climate 35,42,50 units the control unit is located on the exhaust side; in other cases, the control unit is located on the supply side.

****** V winter period, for installations with a water heater, combined operation heat pump and heater is possible only when using a non-freezing coolant; if necessary, please specify when ordering.

Operating principle of the Climate installation

Scheme of work

(1) - at t adv. 28°C 70% r.h. or 23.7°C wet therm. and t ext. 22°C

(2) - at t adv. 7°C dry thermal or 6°C wet therm. and 20°C and 40% relative humidity. internal air

* - 1f to order

** - in winter, for installations with a water heater, the combined operation of a heat pump and heater is possible only when using a non-freezing coolant; if necessary, this must be specified when ordering.

*** - the temperature of the supplied coolant must be in the range of 90/70 ºС.

• Speed ​​adjustment;
• Possibility of control via an application from your smartphone (OS Android, option).​

CLIMATE unit design

1. EU-4 filters

Country of manufacture of fabric: Germany

Type: cassette, regenerable

2. Fans

Country of origin: Germany

Type: radial, double suction

3. Freon compressor

Manufacturer: Mitsubishi Electric

Type: rotary.

Guaranteed resource: more than 80,000 hours, or more than 10 years of continuous operation

4.Electric heater

- (standard equipment)

5. Water heater (optional)

Country of origin: Russia

6. Energy efficient heat exchangers

Country of origin: Russia

Type: finned, copper-aluminum, six-row

7. Automation

Country of origin: Russia

8. Thermally insulated body of the mounting system without loss of height

Automated control system

• Full self-diagnosis when turned on;​
• Logging of installation operation with recording into non-volatile memory;​
• Software upgrade procedure;​
• Automatic switching of heating/cooling modes according to the readings of temperature sensors and user settings;
• Availability of a service mode - viewing the readings of each temperature sensor;
• Speed ​​adjustment;
• Possibility of integration into the dispatch system, remote control via local network"Ethernet";
• Possibility of control via an application from your smartphone (OS Android, option).

The main task of the air handling unit Climate 067W with water heater is the supply of fresh purified air into the room and the removal of exhaust air.

Wherein key feature This model is that during operation it can both heat and cool the supply air through a recovery system with a heat pump.

The installation allows you to maintain the desired temperature in the room all year round.

Composition of the supply and exhaust ventilation unit Climate 067

1. Cassette regenerable filters class EU-4 (Germany)
2. Radial fans (Germany)
3. Rotary compressor with freon circuit (Mitsubishi Electric)
4. Electric heater (standard equipment)
5. Energy-efficient plate heat exchangers (copper-aluminum)
6. Automation and control system
7. Heat and sound insulated housing

Energy efficiency

Climate 067 are among the most energy efficient. The efficiency of the recovery process in this type of ventilation units reaches 70%, which allows you to save money on energy costs.This is especially true for the Russian climate, where the winter season lasts 7-8 months a year.

According to the experience of our research and calculations, the payback for air handling units with recovery occurs on average in 1.5-2 years of operation. Compared to equipment that heats supply air with electricity.

Built-in heat pump air handling unit allows most of the thermal energy to be transferred from supply air- deleted and vice versa. The efficiency in such models reaches the point that for 1 kW of electricity consumed, you get from 3 to 6 kW of thermal energy.

Thus, the energy costs for operating the air handling unit Climate 067 are reduced several times. Price of air handling unit with heat recovery Climate depends on its configuration.

Principle of operation

Supply and exhaust air passes through the installation using fans. The installation contains a reversible heat pump with two metal (copper) heat exchangers in each channel. During operation, depending on the mode - heating or cooling, the heat pump works in such a way that it transfers heat between the channels. The operating principle of a heat pump is the same as that of conventional air conditioners.

Installation of air handling unit Climate 067Installation of this series of equipment is quite simple, since the unit is almost completely assembled in the factory. The entire automation system and reversible heat pump are already in a ready-made state. The entire installation process consists of installing the air supply unit on a support or hanging it from the ceiling, connecting air ducts, connecting an external power supply and assembling the water piping unit (for models with a water heater).

System management

The installation is equipped with a control panel on which you can set and change any parameters of its operation. The remote control can be mounted in any convenient place on the wall.

The automation system of the Climate 067 installation models is very flexible:

• Full automatic diagnostics;
• Recording mode on the controller of all changes/errors/accidents;
• Possibility of connecting to the dispatch system via a local network "Ethernet";
• Automatic switching of heating/cooling modes based on temperature sensors and settings;
• Service mode, sensor polling

Main functions of the control panel:

• Setting the temperature of the supply air to the room taking into account the heating/cooling mode of the outdoor air;
• Pure ventilation mode (supply of outside air without changing its temperature characteristics);
• Air flow regulation (5 speeds);
• Setting the timer for turning the unit on/off and its operation schedule by day of the week.

What is displayed on the remote control:

• Set temperature;
• Actual room temperature;
• Outdoor air temperature;
• Installation operating mode;
• Compressor operation.

Aerodynamic characteristics

Our specialists will be happy to advise you and select the installation of the required power.

Specifications

(1) - at t adv. 28°C 70% r.h. or 23.7°C wet therm. And t internal 22°C

(2) - at t adv. 7°C dry thermal or 6°C wet therm. and 20°C and 40% relative humidity. internal air

(3) - at t adv. 35°C 42% r.h. or 24°C wet therm. And t internal 27°С

(4) - COP (Coefficient of Performance - thermal coefficient) is equal to the ratio of heating power to power consumption.

Heating the supply air for ventilation or heating systems allows us to provide the necessary microclimate that meets sanitary requirements. Without this procedure, a fresh stream will constantly replace the warm exhaust air, bringing it outside thermal energy, thereby reducing the efficiency of the building's heating system. One of the main devices used to prepare supply air for supply to the ventilation system is a heater - an air flow heater that uses the energy of the carrier or converts one type into another.

A heater is a device used to heat air. According to the principle of operation, it is a heat exchanger that transfers energy from the coolant to the flow of the supply jet. It consists of a frame inside which tubes are located in dense rows, connected in one or more lines. A coolant circulates through them - hot water or steam. The air, passing through the cross-section of the frame, receives thermal energy from the hot tubes, due to which it is transported through the ventilation system already heated, without creating the possibility of condensation forming or cooling the premises.

Types of heating devices for supply ventilation

All heaters for supply ventilation can be divided into two main groups:

• Using coolant.
• Not using coolant.

The first group includes water and steam heaters, the second - electric. The fundamental difference between them is that the devices of the first group only organize the transfer of thermal energy supplied to them in finished form, while the devices of the second group create heat within themselves independently. In addition, water and steam heaters are divided into plate heaters, which have greater efficiency but poorer performance, and spiral-rolled heaters, which are now used almost everywhere.

There are also heating devices, often classified in these groups, for example, a gas heater. The burning gas heats the air flow passing through the glow zone, preparing it for use in ventilation systems or air heating. The use of such devices is not widespread, since the use of gas in industrial workshops is associated with a lot of dangers and has many restrictions.

There are also waste oil heaters. The heat generated by burning waste is used. For large rooms such devices do not have sufficient power, but for small auxiliary areas they are quite suitable.

Pros and cons of using

The advantages include:

• High efficiency.
• Simplicity of the device, reliability.
• Compact, can be placed in small spaces.
• Low maintenance (water and steam appliances practically do not need it).

Disadvantages include:

• The need for coolant or connection to the power supply network.
• Independence of work - equipment for air supply is required.
• Stopping the supply of electricity or coolant means stopping the system.

Both the advantages and disadvantages of the devices are determined by the design and do not depend on external factors.

Types of heaters

There are several types of air heaters used in different areas and conditions.

Let's take a closer look at them:

Mermen

The most common group of devices, differing high efficiency, safety and ease of operation. They use hot water as a coolant, coming from the central heating network, hot water supply or from their own boiler. A water heater for fresh air ventilation is the most convenient and economical solution, allowing you to perform the assigned tasks with minimal maintenance or repair costs. The only drawback of the device is the need to connect to the coolant supply system, which creates certain difficulties at the installation stage and prevents quick transfer to another location.

Steam

Steam devices are complete analogues of water devices and in practice differ from them only in the type of coolant. The only difference between steam devices is the greater thickness of the tube walls - 2 mm versus 1.5 for water ones. This is due to the high pressure in the system, requiring reinforced channels for circulation. Otherwise, the devices are identical and have the same operating rules and requirements.

Electrical

An electric heater for supply ventilation does not require a coolant supply, since the heating source is electric current. Connecting such devices is much simpler, which makes them mobile and easy to use, but high energy costs limit the use of this group. Most often, they are installed for local heating when performing one-time work, and are used as emergency or temporary heat sources.

Calculation of heater power

Heater calculation is produced in several stages. The following are determined sequentially:

• Thermal power.
• Determination of the size of the frontal section, selection of the finished device.
• Calculation of media consumption.

Since the air flow is known from the characteristics of the ventilation system, it does not need to be calculated. Formula for determining the thermal power of the device:

Qt = L Pv Cv (tin - tout)

Where Qt- thermal power of the heater.

L- air flow (amount of supply flow).

Pv- air density, table value, is in SNiP.

St. - specific heat air, available in the SNiP tables.

(tin - tnar)- difference between internal and external temperatures.

Internal temperature - sanitary standard for a given room, the outside is determined by the average value of the coldest five-day period of the year for a given region.

We determine the frontal section:

F = (L P)/ V,

Where F- frontal section.

L- air flow.

P- air density.

V- mass flow rate is assumed to be about 3-5 kg/m2 s.

Then we find the coolant flow:

G = (3.6 Qt)/Cin (tin - tout),

Where G- coolant consumption.

3,6 - correction factor to obtain the required units of measurement.

Qt- thermal power of the device.

St.- specific heat capacity of the medium.

(tin - tout)- difference in coolant temperatures at the inlet and outlet of the device.

Knowing the media consumption, you can determine the diameter of the piping pipes and select the necessary equipment.

Calculation example

We determine the thermal power at a temperature difference from -25° to +23°, with a fan capacity of 17000 m3/hour:

Qt = L Pv Cv (tin - tout)= 17000 1.3 1009 (23-(-25)) = 297319 W = 297.3 kW

Frontal section:

F = (L P)/ V= (17000 1.3) / 4 = 5525 = 0.55 m2.

We determine the coolant flow:

G = (3.6 Qt)/Cin (tin - tout)= (3.6 297.3)/1009 (95-50) = 1.58 kg/sec.

Based on the data obtained from the heater table, we select the most suitable model.

Heating surface calculation

The heating surface area determines the efficiency of the device. The larger it is, the higher the heat transfer coefficient, the more the device heats up. air flow. Determined by the formula:

Fk = Q / k (tav.t - tav.v)

Where Q- thermal power.

k- coefficient.

tav.t- average coolant temperature (between the values ​​at the inlet and outlet of the device).

tav.in- average air temperature (external and internal).

The obtained data is compared with the passport characteristics of the selected device. Ideally, the discrepancy between real and calculated values ​​should be 10-20% greater for real ones.

Features of calculating steam heaters

The method for calculating steam heaters is almost identical to that considered. The only difference is the formula for calculating the coolant:

G=Q/r

Where r- specific heat arising from steam condensation.

Independent calculation of heater installations is quite complicated and is fraught with the appearance of many errors. If you need to calculate the device, the best solution will turn to specialists or use an online calculator, of which there are many on the Internet. The solution is quite simple, you just need to insert your own data into the program windows and get the required values, based on which you can select ready-made devices.

Strapping methods

The heater piping is a complex of devices and elements for regulating the supply of coolant to the device. It includes the following elements:

• Pump.
• Two or three way valve.
• Measuring instruments.
• Shut-off valves.
• Filter.
• Bypass.

Depending on the operating conditions, these elements can be located in close proximity to the device, or at a considerable distance from it. Based on the connection conditions, there are:

• Flexible harness. Mounted on control units located next to the device. Installation of such harnesses is considered easier, since it makes it possible to carry out all work on threaded connections, requiring virtually no welding.
• Rigid harness. Used on devices remote from control nodes and requiring strong communications.

Despite the difference in installation techniques, both types perform the same function - they provide setting and adjustment of the heater operating mode.

Adjusting the heating process

There are two ways to adjust the operating mode:

• Quantitative. The adjustment is made by changing the volume of coolant entering the device. With this method, there are sharp temperature changes and instability of the regime, so the second type has recently become more common.
• Qualitative. This method allows you to ensure a constant flow of coolant, which makes the operation of the device more stable and smooth. With a constant flow rate, only the temperature of the medium changes. This is done by mixing some colder return flow into the direct flow, which is regulated by a three-way valve. This system protects the structure from freezing.

Arrangement of ventilation in a private house with your own hands: .

Combination boilers on wood and electricity: optimal solution for heating a country house.