In MIT Apartment Hot Water Entry Stations, there is no boiler in the boiler room; instead, the hot water for use is produced in the heat exchanger-equipped units at the entrance of the apartment. Apartment Entry Stations consist of a compact heat exchanger that provides instant hot water and a differential pressure control valve that ensures balanced distribution between the radiator and heat exchanger.
Various control systems can be used in Apartment Hot Water Entry Stations. Controls are made either with differential pressure control elements only or with control valves controlled by programmable thermostats according to preference.
Technical Parameters
- Nominal Pressure: PN16
- Heating Line Temperature: Maximum 120°C
- Min. Domestic Cold Water Pressure: Pmin=0.5 Bar
- Heat Exchanger Material: AISI 316 Stainless Steel
- Pipes: AISI 316 Stainless Steel
- Primary Circuit Pressure Loss: 25-35 Kpa
Advantages of Apartment Hot Water Entry Station System
MIT Apartment Hot Water Stations eliminate the disadvantages of systems where hot water for use is obtained from central boilers. For instance, it allows savings in boiler and pump areas by eliminating the need for a hot water recirculation line, enabling these areas to be utilized differently.
Advantages of Apartment Entry Stations
- Any type of fuel used by central systems or combinations thereof can be used.
- Only one external pipe is required for heating flow line, heating return line, and cold water line.
- Eliminates the risk of legionella as water is not stored and obtained instantly as needed.
- Hot water is preserved at the set value thanks to the thermostatic mixing valve.
- Overheating in the heat exchanger is prevented by the thermostatic valve.
- No risk of electrical short circuit and gas leakage.
- Room temperature can be controlled independently.
- Low maintenance cost as no maintenance is required.
- Fair billing between apartments is ensured through the calorimeter that can be integrated into the system.
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- Customizable and specially designed according to the needs.
Points Saved During Investment
- From the boiler and meters
- From the heat exchanger
- Due to the heating and hot water being fed from the same line, from the hot water meter
- From plumbing pipes, circulation pumps, and globe valves
- Because it is housed within the unit, from the balancing valve and dirt separators
- Due to no need for a chimney
Parts Making up the Station
Heat Exchanger
The heat exchanger located within the Heating Station enables the heating of the hot water coming from the central boiler room and the mains water, providing the generation of hot water for use.
Plate Heat Exchangers are devices that operate based on the principle of heat transfer between two different fluids with temperature difference. The heating and heated fluids are completely separated by plates.
In hot water entry station applications, plate heat exchangers are the main equipment used in the process of obtaining hot water.
Thermostatic Mixing Valve
Ensures that the cold water coming from the mains is heated in the heat exchanger to provide hot water to taps at a constant temperature. Additionally, by adjusting the temperature value, it can keep the water reaching the taps at a level that does not harm human skin.
Also, in underfloor heating systems, to prevent direct flow of hot water from the central boiler room to the underfloor heating line, the temperature is fixed to the desired value with the thermostatic mixing valve.
Calorimeter
By calculating the heat loss of the hot water from the central boiler room in the apartment and in the heat exchanger, it calculates fair fuel consumption according to the usage quantity of each apartment. Through the M-BUS system, consumption can be monitored from a single center, invoiced, and even limited.
Room Thermostat
The motorized valve inside the station is controlled to provide the comfort temperature within the apartment through the room thermostat. With room thermostat control, the flow rate of the hot water from the central boiler room is proportionally adjusted, providing additional savings and ease of use in an already economical system.
Differential Pressure (ΔP) Control Valve
Used to control the differential pressure in the radiator line. One of its tasks is creating additional pressure in the radiator circuit compared to the heat exchanger circuit when water consumption is involved in the utility water line, redirecting the heating water to the heat exchanger. Parallel operation is ensured in the radiator and heat exchanger circuits through AP control with this valve. Additionally, the entire system is balanced, and differences in pressure between floors are eliminated.
Cold Water Meter
Calculates the use of water coming from the mains before being directed to taps and the heat exchanger, eliminating the need for additional space in the installation. Space is saved, the compact structure of the heat station is preserved. The usage quantity can be read via the meter, and remotely read or invoiced via the M-BUS system.
Collector Groups
Before the hot water from the central boiler room is directed to the heating line in the apartment, it is separated with a supply and return collector to have equal pressure in all radiators in the apartment. The inclusion of collector groups in the heat station provides an advantage in terms of space, eliminating congestion in the apartment entry plumbing.
Standard Unit Scope
- Galvanized or stainless steel mounting plate
- Plate heat exchanger
- Thermostatic valve
- Differential pressure (dP) control valve
- Directional valves
Optional Equipment that Can be Added to the Project (Optional)
- Shut-off Valves
- Dirt Separator
- Dirt separator at the mains water inlet
- Collector Groups
- Room Thermostats
- Hot water recirculation line and pump
- Thermostatic 3-way mixing valve for underfloor heating
- Frequency-controlled pump
- Cooling line
- Heat Meter (Calorimeter)
- Cold water meter
- Enclosed Cabinet