ST-CTH-01
The 3 kW cooling model has the smallest 550 × 550 mm footprint, with 4 kW heating and 2 kg/h humidification. Its modest cooling duty is useful where moisture addition and heating still need separate attention.
PRODUCT GALLERYST
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Humidifiers & Dehumidifiers
Floor-Standing Constant Temperature and Humidity Unit
Product specifications
| Brand | ST |
|---|---|
| Public model | ST-CTH Series |
| Temperature control range | 10–28°C |
| Standard control accuracy | Temperature ±1–2°C; relative humidity ±5% |
| Communication | RS485 |
| Operation | Continuous-duty design |
| Airflow options | Front or top supply with front or rear return |
Customization availableSpecifications can be customized to your requirements.
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Specify the quantity and configuration in your inquiry.
Floor-Standing Constant Temperature and Humidity Unit coordinates cooling, heating, humidification and dehumidification to keep a room near its selected temperature and humidity conditions. This is useful for materials or processes that react to both variables, where a simple dehumidifier addresses only moisture.
The range changes in more than cooling capacity: larger models also alter airflow, heater output, humidifier capacity and indoor-unit size. Matching these duties separately avoids choosing a system that meets the sensible cooling load but lacks the required moisture control.
MODELS AND DIMENSIONS
Available capacity models
| Model | Airflow arrangement | Temperature and humidity control | Cooling capacity (kW) | Compressor type | Compressor input (kW) | Compressor quantity | Fan type | Airflow (m³/h) | Noise dB(A) | External static pressure (Pa) | Heating type | Heating power (kW) | Humidification type | Humidification capacity (kg/h) | Humidifier power (kW) | Indoor unit length (mm) | Indoor unit width (mm) | Indoor unit height (mm) | Indoor unit weight (kg) | Outdoor unit length (mm) | Outdoor unit width (mm) | Outdoor unit height (mm) | Outdoor unit weight (kg) | Indoor/outdoor connection | Liquid pipe (mm) | Gas pipe (mm) | Power supply |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ST-CTH-01 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 3 | Hermetic flexible scroll | 1.1 | 1 | Low-noise centrifugal | 1000 | 53 | ≤100 | PTC electric heating | 4 | Electrode humidifier | 2 | 1.5 | 550 | 550 | 1750 | 130 | 840 | 285 | 610 | 45 | Flare connection | Ø6 | Ø12 | |
| ST-CTH-02 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 5.5 | Hermetic flexible scroll | 2.06 | 1 | Low-noise centrifugal | 1500 | 55 | ≤100 | PTC electric heating | 3 | Electrode humidifier | 3 | 2.2 | 600 | 580 | 1700 | 110 | 840 | 285 | 610 | 45 | Flare connection | Ø6 | Ø12 | 380 V, 3N~, 50 Hz, three-phase four-wire |
| ST-CTH-03 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 7.5 | Hermetic flexible scroll | 2.2 | 1 | Low-noise centrifugal | 2000 | 55 | ≤100 | PTC electric heating | 6 | Electrode humidifier | 3 | 2.2 | 600 | 580 | 1700 | 125 | 880 | 360 | 800 | 55 | Flare connection | Ø10 | Ø16 | 380 V, 3N~, 50 Hz, three-phase four-wire |
| ST-CTH-04 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 12.8 | Hermetic flexible scroll | 4.5 | 1 | Low-noise centrifugal | 3000 | 60 | ≤100 | PTC electric heating | 9 | Electrode humidifier | 4 | 3 | 600 | 580 | 1900 | 145 | 930 | 390 | 1270 | 85 | Flare connection | Ø12 | Ø19 | 380 V, 3N~, 50 Hz, three-phase four-wire |
| ST-CTH-05 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 15.5 | Hermetic flexible scroll | 5.2 | 1 | Low-noise centrifugal | 3500 | 60 | ≤100 | PTC electric heating | 9 | Electrode humidifier | 4 | 3 | 600 | 580 | 1900 | 155 | 930 | 390 | 1270 | 90 | Flare connection | Ø12 | Ø19 | 380 V, 3N~, 50 Hz, three-phase four-wire |
| ST-CTH-06 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 21.5 | Hermetic flexible scroll | 6.75 | 1 | Low-noise centrifugal | 5000 | 60 | ≤100 | PTC electric heating | 12 | Electrode humidifier | 6 | 4.5 | 1100 | 650 | 1800 | 235 | 750 | 750 | 1060 | 120 | Brazed connection | Ø16 | Ø22 | 380 V, 3N~, 50 Hz, three-phase four-wire |
| ST-CTH-07 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 26.8 | Hermetic flexible scroll | 9 | 2 | Low-noise centrifugal | 6000 | 62 | ≤100 | PTC electric heating | 18 | Electrode humidifier | 6 | 4.5 | 1200 | 650 | 1800 | 255 | 930 × 2 | 390 × 2 | 1270 × 2 | 85 × 2 | Brazed connection | Ø12 × 2 | Ø19 × 2 | 380 V, 3N~, 50 Hz, three-phase four-wire |
| ST-CTH-08 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 32 | Hermetic flexible scroll | 10.4 | 2 | Low-noise centrifugal | 7000 | 63 | Optional | PTC electric heating | 24 | Electrode humidifier | 8 | 6 | 1300 | 650 | 2000 | 390 | 930 × 2 | 390 × 2 | 1270 × 2 | 90 × 2 | Brazed connection | Ø12 × 2 | Ø19 × 2 | 380 V, 3N~, 50 Hz, three-phase four-wire |
| ST-CTH-09 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 42 | Hermetic flexible scroll | 13.5 | 2 | Low-noise centrifugal | 9000 | 65 | Optional | PTC electric heating | 24 | Electrode humidifier | 10 | 7.5 | 1400 | 800 | 2000 | 440 | 750 × 2 | 750 × 2 | 1060 × 2 | 120 × 2 | Brazed connection | Ø16 × 2 | Ø22 × 2 | 380 V, 3N~, 50 Hz, three-phase four-wire |
| ST-CTH-10 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 52.2 | Hermetic flexible scroll | 18 | 2 | Low-noise centrifugal | 12000 | 65 | Optional | PTC electric heating | 27 | Electrode humidifier | 12 | 9 | 1700 | 860 | 2000 | 610 | 1460 × 2 | 760 × 2 | 1060 × 2 | 200 × 2 | Brazed connection | Ø19 × 2 | Ø22 × 2 | 380 V, 3N~, 50 Hz, three-phase four-wire |
| ST-CTH-11 | Front supply/front return, top supply/front return or top supply/rear return | 18–28°C ±1°C; 45–65% RH ±5% | 62 | Hermetic flexible scroll | 20.8 | 2 | Low-noise centrifugal | 14000 | 68 | Optional | PTC electric heating | 36 | Electrode humidifier | 15 | 11 | 1900 | 860 | 2000 | 690 | 1460 × 2 | 760 × 2 | 1060 × 2 | 230 × 2 | Brazed connection | Ø19 × 2 | Ø22 × 2 | 380 V, 3N~, 50 Hz, three-phase four-wire |
Final selection requires a room sensible/latent load calculation and confirmation of the air arrangement.
MODEL DIFFERENCES
Which configuration fits the task
ST-CTH-02
At 5.5 kW cooling, the cabinet is 600 × 580 × 1700 mm. Heating is 3 kW while humidification rises to 3 kg/h, so this step should be matched to cooling and moisture loads independently.
ST-CTH-03
The same 600 × 580 × 1700 mm cabinet provides 7.5 kW cooling and 6 kW heating, while humidification stays at 3 kg/h. It increases thermal capacity without increasing the indoor envelope.
ST-CTH-04
Cooling rises to 12.8 kW with 9 kW heating and 4 kg/h humidification. The 600 × 580 mm footprint is retained, but cabinet height increases to 1900 mm.
ST-CTH-05
The 15.5 kW version adds cooling and airflow within the same 600 × 580 × 1900 mm enclosure as the preceding model. Heating and humidification remain 9 kW and 4 kg/h.
ST-CTH-06
This 21.5 kW single-compressor version moves to a 1100 × 650 × 1800 mm cabinet, with 12 kW heating and 6 kg/h humidification. Brazed refrigerant connections replace the smaller models’ flare connections.
ST-CTH-07
The 26.8 kW model uses two compressors and two outdoor units, with 18 kW heating and 6 kg/h humidification. Its installation therefore needs space and pipe routes for both outdoor connections.
ST-CTH-08
At 32 kW cooling, heating increases to 24 kW and humidification to 8 kg/h. The 1300 × 650 × 2000 mm cabinet and two-compressor arrangement suit a higher combined thermal and moisture load.
ST-CTH-09
This 42 kW model raises airflow to 9000 m³/h and humidification to 10 kg/h while retaining 24 kW heating. Its 1400 × 800 × 2000 mm, 440 kg cabinet needs more floor space and support.
ST-CTH-10
The 52.2 kW version supplies 12000 m³/h, with 27 kW heating and 12 kg/h humidification. Its two compressors list 18 kW input; the 1700 × 860 mm footprint and paired outdoor units shape the plant layout.
ST-CTH-11
The largest model combines 62 kW cooling, 36 kW heating and 15 kg/h humidification. The indoor unit grows to 1900 × 860 × 2000 mm and 690 kg, with listed compressor input of 20.8 kW across two compressors.
PRECISION ROOM CONDITIONING
Temperature and humidity control in one system
Cooling and heating
The controller selects cooling or electric heating to correct room temperature around the chosen setpoint.
Humidification and dehumidification
Integrated moisture control corrects both dry and humid conditions without separate portable equipment.
Continuous monitoring
The display, alarms, power-failure memory and RS485 interface support unattended rooms and central supervision.
APPLICATION ENVIRONMENTS
Combined temperature and moisture control from the floor
Archives and collection stores
Use coordinated conditioning where stored materials require control of both temperature and relative humidity.
Laboratory and precision workrooms
A floor-standing cabinet can serve room-sensitive work where the chosen supply and return arrangement fits the equipment layout.
Data and electrical rooms
Cooling and humidity duties can be selected together for rooms affected by equipment heat and incoming air.
SELECTION
Match the air route to the separate room loads
Choose front or top supply for the layout
The available return arrangements change the route through the room; retain service access around the floor-standing cabinet.
Review each conditioning duty
Compare cooling, heating, moisture addition and airflow with the calculated room loads, then plan the outdoor unit and connecting services.
PROCUREMENT / INQUIRY
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