DJDD-870P 870 Pints/Day Ceiling Mounted Dehumidifier
High-Capacity Humidity Control for Large Indoor Spaces
Product Overview
The TOJJE DJDD-870P is a high-capacity ducted ceiling-mounted dehumidifier designed for large indoor environments that require effective humidity control. With a nominal dehumidification capacity of 870 pints per day at 27°C and 60% RH, the DJDD-870P is suitable for projects with substantial moisture-removal requirements.
The unit provides a circulating airflow of 4,500 m³/h and supports a humidity control range of 40%–95% RH. Its duct-connected design allows the equipment to be installed outside the controlled room when the project layout and duct configuration permit, helping preserve usable space within the application area.
Continuous hose drainage, automatic defrosting, automatic restart with memory and compressor start-delay protection support practical operation. The DJDD-870P can be evaluated for commercial and industrial humidity-control projects based on the actual room conditions, moisture load, airflow requirements and available electrical supply.
Why Choose the DJDD-870P
870 PPD High-Capacity Dehumidification
The DJDD-870P provides a nominal dehumidification capacity of 870 pints per day at 27°C and 60% RH. This high-capacity design makes it an option for large indoor spaces where substantial moisture removal is required. Actual performance depends on temperature, relative humidity and operating conditions.
4,500 m³/h Circulating Airflow
With a listed circulating airflow of 4,500 m³/h, the DJDD-870P processes a substantial volume of air to support moisture removal within a properly designed indoor air distribution system.
Duct-Connected Equipment Layout
The unit can be installed outside the controlled room and connected through inlet and outlet ducts, subject to the approved installation design. This arrangement can help reduce the space occupied by equipment inside the application area. Duct dimensions, resistance, mounting and maintenance access should be confirmed before installation.
Adjustable Humidity Control
The specified humidity control range is 40%–95% RH, with a stated control accuracy of approximately ±3% RH. The appropriate setpoint should be selected according to the application, ambient conditions and operating requirements.
Continuous Condensate Drainage
A hose connection allows collected condensate to be discharged continuously to a suitable drain. Correct drainage routing helps reduce the risk of water backup and leakage during extended operation.
Equipment Protection Functions
The listed functions include automatic restart with memory, a three-minute compressor start delay, automatic defrosting, high- and low-pressure protection, and fault-code display. These functions support equipment protection and routine operating checks.
Key features include:
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High efficiency / energy saving / less power consumption
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Automatic restart on and off with memory function
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Continuously drainage in 24 hours by tube
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High precision humidity control with ±3%RH, ambient humidity controlled ＞RH45% based on temp
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Compressor with 3 minutes delay - starting protection
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Auot-defrosting function
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High and Low pressure protection
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Malfunction display Error code timely
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Easy operation and simple installation on ceilin
Product Specifications
Industrial ducted dehumidifier is designed for some special application room, machine can be installed outside room, and connect to air inelt and air outlet by ducting pipe. It will be idea solution to save limited space in the application room.
| Model number | DJDD-870P |
| Nominal dehumidification（27℃，RH60%） | 870p/day |
| Power supply | 220-240V/60Hz |
| Rated input power | 4.9KW |
| Rated input current | 22.5A |
| Circulating air flow | 4500m³/h |
| Humidity control range | 40%-95% |
| Drainage way | Hose connection |
| Working temperature range | 5~38°C |
| Refrigerant | R407c/R410a |
| Noise | ≤70db |
| Compressor type | Rotary |
| Warranty | 1 Year |
| Standard packaging | Wooden case |
| Certification | CE |
| Net weight/Gross weight | 250kg/320kg |
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| Machine size | 1850x1060x793 mm |
| Package size | 1915x1125x945 mm |
How Does the DJDD-870P Work?
Working Principle
870 Pints/Day Ceiling Mounted Dehumidifier Applications
Greenhouses and Indoor Growing Facilities
Plant transpiration, irrigation and environmental conditions can introduce substantial moisture into enclosed growing spaces. A suitably sized dehumidifier helps remove excess moisture and supports management of the target relative humidity. Selection should account for plant type, growing area, irrigation practices, ventilation and peak moisture load.
Warehouses and Storage Areas
Excess humidity can contribute to condensation, damp packaging and moisture-related storage problems. The DJDD-870P can be evaluated for large storage environments where the moisture load and required humidity conditions justify a high-capacity dehumidification system.
Industrial Workshops and Production Areas
Manufacturing processes, wet materials and outside-air infiltration may introduce moisture into production spaces. High-capacity dehumidification can help manage indoor humidity when the equipment is correctly sized for the process and building conditions.
Large Commercial and Specialized Indoor Spaces
The DJDD-870P is designed for large indoor spaces that require high-capacity humidity control. Its duct-connected design allows flexible equipment placement and helps distribute dehumidified air throughout the target area. It can be considered for commercial and industrial projects where effective moisture removal and well-planned air circulation are essential.
Installation Considerations
Installation
- Installation location: Confirm the approved equipment position, structural support, service clearance and maintenance access.
- Duct connections: Design the inlet and outlet ducts according to the manufacturer's requirements and the specified airflow. Allow for duct resistance and appropriate air distribution.
- Drainage: Provide a suitable condensate drainage route and ensure that water can discharge without backup or leakage.
- Electrical supply: Confirm the required voltage, frequency, circuit capacity and electrical protection against the final equipment nameplate.
- Humidity requirements: Evaluate the room dimensions, ambient temperature, current RH, target RH, moisture sources and ventilation conditions.
Installation should follow the manufacturer's approved instructions and be completed by qualified personnel. Confirm the mounting method, duct configuration and electrical requirements with TOJJE before installation.
Frequently Asked Questions
The listed nominal dehumidification capacity is 870 pints per day at 27°C and 60% relative humidity. Actual moisture removal varies with temperature, humidity and operating conditions.
The listed circulating airflow is 4,500 m³/h. The final duct design should account for the installation layout and air resistance.
The product specification describes an installation arrangement in which the unit is positioned outside the application room and connected through inlet and outlet ducts. Confirm the approved installation method and duct requirements with TOJJE before installation.
The specified humidity control range is 40%–95% RH, with a stated control accuracy of approximately ±3% RH.
The unit uses a hose connection for condensate drainage. A suitable drainage route should be provided as part of the installation.
Please confirm the refrigerant specification for the exact DJDD-870P configuration with TOJJE before ordering, as the current online specification lists both R407C and R410A.
The current online specification lists 220–240 V / 60 Hz, rated input power of 4.9 kW and rated input current of 22.5 A. Confirm these values against the final equipment nameplate and destination-country electrical requirements before purchase.
Provide the room dimensions, application, ambient temperature, current relative humidity, target RH, moisture sources, ventilation conditions and available electrical supply. TOJJE can assess the requirements and advise on suitable equipment capacity and installation configuration.
Looking for a high-capacity ducted dehumidifier for your facility? Contact TOJJE with your application, room dimensions, target humidity, operating conditions and destination country. Our team can review your project requirements and provide guidance on model suitability, duct connections, electrical configuration and quotation details.
