MyVent
Ventilation
MHDM series are steam duct humidifiers
This type of humidifier boils water to produce hot steam, which is fed into the airflow created by the fan. Hot steam kills bacteria and mold. But there is a potential risk of burns during its operation.
1 ... 6 kg/h
Capacity:
Quick detachable steam cylinder
Parameters:
- Humidifiers of MHDM series is used with small units, such as fan terminals or small fresh air supply units, where a small steam humidifier is required. It is particularly suitable for under-ceiling installation or other applications with a suspended ventilation system
- Compact design, only 260 mm high, allows installation in confined spaces under the ceiling
- The humidifier is easy to attach
Control circuit board
- The cylinder can be easily replaced without dismantling the humidifier
- Multiple safety systems
- Integrated pipe for connection to a ventilation system
Applications:
- Computer rooms
- Household air conditioning systems
- Laboratories
- Surgeries
- Electronics factories
- Hospitals
- Private houses
- Hotels
- Offices
Relative Humidity Influence on Human Health
Sterling and Arundel showed in their key study done in 1986 that the optimal conditions for human health are 40-60% RH at normal room temperatures.
HVAC professionals still use this research as the main source for setting the standards for a healthy environment set by the American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE).
First of all, maintaining a relative humidity within 40-60% range prevents dryness of the skin and mucous membranes of the eyes, nose, etc. Also the impact of viruses, bacteria, and allergens found in the environment is reduced in this range of RH, as we can see in the graph below.
Optimum relative humidity range for a healthy environment
Health Protection
Maintaining healthy humidity levels in homes, offices, hospitals, clinics, and other healthcare facilities will reduce the spread of viruses. This will create additional protection for staff and patients during the COVID-19 pandemic.
It is very important to maintain a relative humidity level in 40...60% range in order to:
- Reduce in most viral activity
- Protect our body's natural barriers from drying out
- Provide self-cleansing of the respiratory tract, helping our innate antiviral protection
Features of using steam duct humidifier
- Сonnection to the central water supply system
- Hight temperature steam kills the most types of germs, bacteria and mold
- Fully automated operation without user participation
- Automated water refreshing to reduce salts concentration
- Does not cool the air supplied to the room
Accessories for MHDM 3D
| Accessories | Accuracy | Relative humidity range |
Control mode | Protection | Power supply |
| Wall mounted humidistat Mycond JS 401 | ±5 % RH | 20—90 % RH | relay | 220VAC | |
| Duct humidistat | ±3 % RH | 10—100 % RH | relay | IP54 | 24VDC |
| Differential pressure switch | — | — | relay | IP54 | — |
Accessories for MHDM 6D
| Accessories | Accuracy | Relative humidity range |
Control mode | Protection | Power supply |
| Wall mounted humidistat Mycond JS 401 | ±5 % RH | 20—90 % RH | relay | 220VAC | |
| Duct humidistat | ±3 % RH | 0—100 %RH | 0-10V/relay | IP54 | 24VDC |
| Differential pressure switch | — | — | relay | IP54 | — |
Accessories:
Duct humidistat
Sensors / switches of DXH series are designed to
measure relative humidity in ducts with an integrated
self-calibrating and maintenance-free digital
sensor. Four pre-defined ranges along with one
one user-definable range allow setting up an ideal
measurement window. The units have an analog
output and a relay output along with a Modbus RTU
(RS485) communication port.
Key features :
- Microcontroller-based design
- 1 analog output and 1 relay output
- Modbus RTU (RS485) communication port
- Multiple measurement ranges available
- Selectable switching setpoint
- Fixed and selectable hysteresis
- Innovative self-calibrating algorithm
- Long-term stability and accuracy
| Specifications | Parameter |
| Outputs | 1 analog output (0—10 VDC / 0—20 mA) 1 C/O relay output (230 VAC / 2 A) |
| Power consumption | No load: maximum 55 mA Full load: maximum 75 mA |
| Load resistance | 0—10 VDC mode > 500 Ω 0—20 mA mode < 500 Ω |
| Sensor ranges | 20—90 % rH 0—60 % rH 0—80 % rH 0—95 % rH |
| Sensor range (Modbus selection) | 0—95 % rH, free selectable |
| Fixed hysteresis in standalone mode | 5 % rH |
| Hysteresis values (Modbus selection) | 1 / 3 / 5 / 7 / 10 % rH |
| Switching point | Selectable by trimmer or via Modbus RTU |
| Accuracy | ±3%rH(0—95 %rH) |
| Protection standard | Enclosure: IP54, probe: IP20 |
| Ambient conditions | Temperature 0—50 °C Rel. humidity < 95 % rH (non-condensing) |
Differential pressure switch
These sensors are high-precision adjustable
differential pressure switches that allow monitoring
overpressure, underpressure and differential
pressure of air or other non-combustible, non-
corrosive gases. The setpoint can be adjusted using
a calibrated scaled knob for the switching pressure,
or using a screwdriver and a pressure gauge for the
switching ΔP.
Key features:
- High precision sensitivity
- Available versions for a variety of pressure ranges
- Adjustable switching setpoint (DP)
- Long mechanical life
| Specifications | Parameter |
| Operating pressure | 20-200 Pa |
| Mechanical life cycles | 10.000.000 operations |
| Diaphragm | Silicone |
| Protection | IP54 (according to EN 60529) |
| Ambient conditions | temp -20 to +85 °С, relative humidity ≤ 95 % |
| Contacts rating | max. 1,0 A (0,4) / 250 VAC (VDE 0630, EN 1854) |
| Dimensions | 104*86*57 mm |
Wall mounted humidistat Mycond JS 401
JS401 is a state-of-the-art multi-functional controller
for accurate monitoring of temperature and humidity
parameters. It is a perfect choice for climate control
systems in residential buildings or commercial
facilities.
Key features:
- Button control
- Large dark display with blue backlighting
- Large font
- Humidity adjustment between 10% and 90%
- Programmable mode
- These controllers are mainly used for humidification and dehumidification
| Specifications | Parameter |
| Power supply | 220VAC ± 10 % |
| Power consumption | < 2 W |
| Measuring range | temp 1 - 99 °С, relative humidity 20 - 90 % |
| Accuracy | temp ±3 % °C, ±5 % rH |
| Relay | AC220V - 5A |
| Ambient conditions | temp 0 to + 50 °С, relative humidity ≤ 95 % |
| Dimensions | 86 х 86 х 15 mm |
| installation box | 60 мм (EURO) |
| Specifications | Units | МHDM-3D | МHDM-6D |
| Capacity | kg/h | 1—3 | 1—6 |
| Power consumption | kW | 2,2 | 4,5 |
| Dimensions (LxWxH) | mm | 400х380х260 | 620х240х260 |
| Power supply | phases / V / Hz | 1/220/50 | 1/220/50 |
MHDM -D installation
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