GZD Ceiling-Mounted Dehumidifier
Product Overview
The GZD Ceiling-Mounted Dehumidifier is a ducted refrigerant dehumidifier designed to control excess moisture while keeping floor space available. Installed above the ceiling and connected to return- and supply-air ducts, the unit draws humid air from the space, removes moisture, and returns drier air to the room.
The GZD series includes six models with listed dehumidification capacities from 25 to 480 L/day and airflow from 280 to 5,600 m³/h. Use the model data below as a preliminary reference. Final selection should consider moisture load, operating conditions, duct resistance, drainage, installation access, and site power.
Main Specifications
| Compact Models: GZD-251B / GZD-551B / GZD-951B | |||
| Parameter | GZD-251B | GZD-551B | GZD-951B |
| Recommended Coverage Area* | 15–30 m² | 30–55 m² | 80–110 m² |
| Dehumidification Capacity** | 25 L/day | 55 L/day | 95 L/day |
| Process Airflow | 280 m³/h | 670 m³/h | 1,050 m³/h |
| Rated Power | 0.19 kW | 0.8 kW | 0.98 kW |
| Power Supply | 1 Ph / 220 V / 50 Hz | 1 Ph / 220 V / 50 Hz | 1 Ph / 220 V / 50 Hz |
| External Static Pressure | 50 Pa | 70 Pa | 70 Pa |
| Supply Air Outlet | Ø100 mm | Ø150 mm | Ø200 mm |
| Return Air Inlet | Ø150 mm | Ø150 mm | Ø250 mm |
| Overall Dimensions (W × D × H) | 680 × 320 × 210 mm | 830 × 490 × 375 mm | 900 × 565 × 450 mm |
| Approx. Net Weight | 18 kg | 35 kg | 53 kg |
| High-Capacity Models: GZD-7S / GZD-10S / GZD-20S | |||
| Parameter | GZD-7S | GZD-10S | GZD-20S |
| Recommended Coverage Area* | 120–160 m² | 180–260 m² | 330–450 m² |
| Dehumidification Capacity** | 180 L/day | 240 L/day | 480 L/day |
| Process Airflow | 2,500 m³/h | 2,800 m³/h | 5,600 m³/h |
| Rated Power | 2.7 kW | 4.3 kW | 8.5 kW |
| Power Supply | 1 Ph / 220 V / 50 Hz | 3 Ph / 380 V / 50 Hz | 3 Ph / 380 V / 50 Hz |
| External Static Pressure | 105 Pa | 135 Pa | 135 Pa |
| Supply Air Outlet | 540 × 430 mm | 540 × 430 mm | 1,000 × 520 mm |
| Return Air Inlet | 540 × 430 mm | 540 × 430 mm | 1,000 × 520 mm |
| Overall Dimensions (W × D × H) | 1,050 × 700 × 600 mm | 1,050 × 700 × 600 mm | 1,280 × 1,100 × 700 mm |
| Approx. Net Weight | 109 kg | 118 kg | 210 kg |
* Coverage area is a preliminary guide for a ceiling height of 2.8–3.5 m. ** Capacity is listed at 30°C / 80% RH. Confirm the applicable test standard and project conditions during selection.
General Technical Data
| Parameter | Specification |
| Operating temperature range | 5–38°C |
| Maximum remote control cable length | GZD-251B: 30 m; GZD-10S: 50 m |
| Filter | G4 coarse filter (listed) |
| Compressor brands | Panasonic / Daikin / LG (listed options) |
| Compressor restart delay | 3 minutes |
| Ingress protection rating | IPX4 (as listed) |
| Packaging | Wooden case |
Product Features
Ceiling-Mounted, Duct-Connected Design
The ceiling-mounted arrangement helps preserve usable floor area. Return and supply air connections let the unit integrate with a project duct system. Check ceiling clearance, service access, duct dimensions, and condensate drainage before installation.
Six Capacity Options
Choose from six models covering listed capacities of 25–480 L/day and airflow of 280–5,600 m³/h. Coverage figures are intended for initial model comparison; actual sizing depends on moisture load, ventilation, temperature, humidity target, and room construction.
Airflow and External Static Pressure Selection
Each model has a specified airflow and available external static pressure. Match these values to the duct layout and system resistance to support the required air distribution.
Model-Specific Power Supply
GZD-251B, GZD-551B, GZD-951B, and GZD-7S are listed for 1 Ph / 220 V / 50 Hz. GZD-10S and GZD-20S are listed for 3 Ph / 380 V / 50 Hz. Confirm site power before ordering.
How the Ducted Dehumidifier Works
Humid return air enters the unit through the return-air duct and passes through the refrigeration dehumidification section. Moisture condenses and is removed through the drain. The treated air is then supplied back to the space through the supply-air duct. The actual duct arrangement and drainage details should follow the approved project design and product documentation.
Applications
The GZD Ceiling-Mounted Dehumidifier can be considered for commercial and industrial spaces where concealed installation and ducted air distribution suit the project, including workshops, warehouses, storage rooms, basements, archives, and equipment rooms. Confirm suitability against the required humidity target, ambient conditions, room load, ventilation strategy, and duct design.
How to Select a GZD Model
For a technical recommendation, provide room length, width and height; target temperature and relative humidity; expected moisture load; required airflow; supply and return duct dimensions and approximate lengths; available static pressure; site voltage, phase and frequency; installation clearance; and condensate drain location. Coverage area alone is not sufficient to size a dehumidifier.
Frequently Asked Questions
What is a ceiling-mounted dehumidifier?
It is a dehumidifier installed above or within a ceiling space. GZD models connect to supply and return ducts to treat air from the space and deliver drier air back.
Is the GZD series a ducted dehumidifier?
Yes. The listed models have return-air inlets and supply-air outlets for duct connection. Confirm the connection arrangement and duct design for the selected model.
What capacity test condition is listed?
The supplied specification lists dehumidification capacity at 30°C and 80% relative humidity. Confirm the rating method and operating conditions for your project.
Can the GZD unit treat outdoor fresh air?
The available specifications describe return-air dehumidification and do not confirm an outdoor-air function. Share fresh-air requirements with our team for technical review.
How can I request a quotation?
Send us your target model or moisture-removal requirement, room dimensions, target temperature and humidity, duct details, site power supply, quantity, destination, and certification requirements.
Request a Technical Recommendation
Not sure which GZD model fits your space? Contact our team with your room conditions, duct layout, and power supply. We can help shortlist a model and review the key installation parameters.
Recommended Applications
shipyard dehumidification solutions · pharmaceutical dehumidification system · warehouse humidity control