CDP40T Through-Wall Pool Dehumidifier with Complete Duct Kit – Professional Indoor Pool Climate Control System

Transform your indoor pool environment with the ZZCDP40T – a comprehensive climate control solution that combines the powerful CDP40T through-wall dehumidifier with a complete duct installation kit. Engineered for professional performance and designed with energy efficiency at its core, this system delivers 34 litres of moisture removal per day while maintaining whisper-quiet operation at just 43 dB(A).

Complete Installation Package Receive everything you need in one integrated kit: the CDP40T through-wall dehumidifier unit plus the CDP40T/DUCT system including inlet/outlet sections, grills, filter, and extension options. No hunting for compatible components – we’ve done the work for you.

Whisper-Quiet Performance At just 43 dB(A) measured at 1 metre, the CDP40T operates quieter than normal conversation. Your pool users will barely notice it’s there, while you enjoy perfect climate control.

Energy-Saving Technology Highly efficient fans and compressors combined with intelligent control systems deliver exceptional dehumidification performance while consuming only 0.9 kW of power. Lower your energy bills without compromising on performance.

Professional-Grade Durability Epoxy-coated evaporator and condenser coils resist corrosion in harsh pool environments. Powder-coated metal components ensure years of reliable operation. Built in Denmark to exacting quality standards with ISO 9001 certification.

Smart Building Integration BMS-ready with Modbus communication, USB data logging, and integrated heating control (ON/OFF). Perfect for commercial facilities, hotels, leisure centres, and high-end residential installations.

Flexible Through-Wall Design Install adjacent to your pool room, not in it. The through-wall configuration allows placement in a separate plant room or adjacent space, reducing noise in the pool area and simplifying maintenance access.

📊 Complete Technical Specifications

Dehumidification Performance

Specification	Value
Model	ZZCDP40T (CDP40T + CDP40T/DUCT)
Daily Capacity @ 28°C/60% RH	34 litres/day (1.4 L/hr)
Air Flow (Nominal)	400 m³/hour
Operating Temperature Range	10°C to 36°C
Operating Humidity Range	40% to 100% RH
Humidity Control Accuracy	±2% RH (hysteresis)

Electrical & Power Specifications

Specification	Value
Power Supply	230V / 1ph / 50Hz
Nominal Power Consumption	0.9 kW
Nominal Running Current	3.8 Amps
Fuse Required	10 Amp (motor-rated)
SEC @ 28°C/60% RH	0.47 kWh/litre

Heating Performance (Base Unit)

Specification	Value
Heat to Air (Dehumidifier Only)	1.62 kW
Temperature Rise	Approximately 5°C above inlet air

Physical Dimensions (Through-Wall Model)

Dimension	Measurement
Width (Unpacked)	998 mm
Height (Unpacked)	700 mm
Depth (Unpacked)	304 mm
Weight	57.5 kg
Wall Opening Required	610 mm (width) × 395 mm (height)

Refrigeration System

Specification	Value
Refrigerant Type	R407C (ozone-friendly)
Refrigerant Charge	0.7 kg
Global Warming Potential (GWP)	1774

Acoustic Performance

Measurement	Value
Sound Pressure @ 1m (Through-Wall)	43 dB(A)
Sound Pressure @ 1m (Wall-Mounted)	46 dB(A)

Installation Requirements

Requirement	Specification
Condensate Drain Connection	3/4″ BSP
Minimum Drainage Fall	2% gradient
Minimum Ceiling Clearance	225 mm
Minimum Floor Clearance	225 mm
Protection Class	IPX4
Filter Type	PPI 15 (washable/replaceable)

💡 Key Features & Benefits

✅ Superior Climate Control

The CDP40T removes 34 litres of moisture per day, maintaining optimal humidity levels between 40-100% RH with precision ±2% control. Your pool hall stays comfortable, condensation-free, and safe from structural moisture damage.

✅ Intelligent Defrost System

Proprietary defrosting technology monitors evaporator temperature continuously. When needed, the system switches to active defrost mode automatically, ensuring uninterrupted performance even in demanding conditions.

✅ Advanced Control Options

• Integrated ON/OFF Control for heating and humidity management
• BMS Compatibility via Modbus communication for building automation
• USB Data Logging for performance monitoring and diagnostics
• 4-Digit Display showing real-time humidity levels and system codes
• External RH/T Sensor Input for remote monitoring (optional accessory)

✅ Corrosion-Resistant Construction

Specifically engineered for harsh pool environments:

• Epoxy-coated evaporator coils withstand chlorine-laden air
• Epoxy-coated condenser coils resist moisture and chemicals
• Powder-coated metal components throughout for maximum durability
• Suitable for pools with chlorine (1-2 ppm free chlorine) or salt systems (up to 30,000 ppm NaCl)

✅ Whisper-Quiet Operation

Through-wall installation reduces in-room noise to just 43 dB(A) – quieter than a refrigerator. The dedicated plant room location keeps mechanical noise away from pool users.

✅ Energy Efficiency That Saves Money

Consuming only 0.9 kW of power while processing 400 m³ of air per hour, the CDP40T delivers exceptional efficiency. The 0.47 kWh/litre SEC rating means lower operating costs compared to less efficient systems.

✅ Complete Installation Kit

Everything included for professional installation:

• CDP40T through-wall dehumidifier unit
• Inlet and outlet duct sections
• Decorative grills for finished appearance
• Inlet filter for air quality maintenance
• Extension options for flexible wall thickness accommodation
• Wall mounting brackets and hardware

📄 Downloads & Technical Documentation

Access comprehensive product information, installation guides, and technical specifications:

📄 CDP Dehumidifiers Product Brochure (opens in new tab) Complete overview of the CDP range including specifications, features, applications, and optional accessories. Essential reading for system specification and product comparison.

📄 CDP 40 LPHW Technical Data Sheet (opens in new tab) Detailed technical specifications for the CDP40 with Low Pressure Hot Water heating option. Includes dimensional drawings, electrical data, and plumbing requirements.

📄 Guidelines to Pool Hall Construction 2022 (opens in new tab) Comprehensive guide covering structural design, insulation, vapour barriers, glazing, and material selection for indoor pool environments. Essential reference for architects, builders, and pool designers.

📄 Quick Installation Manual (Multi-Language) (opens in new tab) Step-by-step visual installation instructions in multiple languages. Covers wall mounting, through-wall installation, duct kit assembly, electrical connections, and initial setup procedures.

📄 Complete Service Manual (opens in new tab) Comprehensive technical documentation for service technicians. Includes product description, installation details, operation instructions, maintenance schedules, troubleshooting guides, spare parts lists, wiring diagrams, and refrigeration circuit schematics.

🏊 Room Size & Capacity Recommendations

Recommended Pool Room Volumes

The CDP40T is optimally sized for indoor pool environments with the following characteristics:

Pool Hall Volume	Suitability	Typical Pool Size
30-50 m³	✅ Ideal	Small residential pools (3m × 6m)
50-75 m³	✅ Recommended	Medium residential pools (4m × 8m)
75-100 m³	⚠️ Adequate*	Larger residential installations

Note: Capacity calculations assume standard indoor pool conditions (28°C air temperature, 60% RH target, 28°C pool water temperature). Actual performance varies based on occupancy levels, ventilation rates, pool water temperature, and seasonal variations.

*For rooms exceeding 75 m³, consider the CDP50T or CDP70T models for optimal performance.

⏱️ Estimated Dehumidification Performance

How Quickly Will It Work?

Understanding real-world performance helps you set realistic expectations. The table below shows estimated time to reduce humidity from high levels (80% RH) to optimal pool conditions (60% RH) in various room sizes:

Room Volume	Initial RH	Target RH	Estimated Time*	Air Changes
40 m³	80%	60%	3-4 hours	30-40
50 m³	80%	60%	4-5 hours	32-40
60 m³	80%	60%	5-6 hours	33-40
75 m³	80%	60%	6-8 hours	32-43

⚠️ Important Disclaimers:

• Estimates based on closed room with no fresh air infiltration
• Assumes room temperature 28°C, pool water 28°C
• Actual times vary significantly based on:
  • Number of swimmers and activity levels
  • Frequency of door/window opening
  • Pool water surface area and temperature
  • External weather conditions
  • Wall/ceiling insulation quality
  • Ventilation system operation

💡 Pro Tip: For consistently optimal humidity control, the CDP40T operates continuously, maintaining your set point rather than working in cycles. This prevents humidity spikes and protects your facility.

🌡️ Seasonal Performance Expectations

Year-Round Climate Control

The CDP40T delivers reliable performance across all seasons, with capacity variations based on ambient conditions:

Winter Operation (10-15°C ambient)

• Excellent dehumidification performance
• Intelligent defrost system prevents ice buildup
• Lower external temperatures enhance efficiency
• Supplementary heating may be required for comfort

Spring/Autumn (15-25°C ambient)

• Optimal operating conditions
• Peak efficiency performance
• Balanced dehumidification and air warming
• Minimal supplementary heating needed

Summer Operation (25-36°C ambient)

• Maximum capacity operation
• Higher moisture removal rates
• May require ventilation/cooling for comfort
• Consider solar gain through glazing

Beyond Operating Range:

• Below 10°C: Not recommended – contact supplier for heated model options
• Above 36°C: Automatic safety shutdown protects compressor

💰 Running Cost Comparisons

How Much Does It Cost to Operate?

Understanding operating costs helps you budget effectively and compare options:

Daily Operating Costs (Estimated)

Operating Hours	Power Consumption	Cost @ £0.30/kWh*	Cost @ £0.35/kWh*
8 hours/day	7.2 kWh	£2.16	£2.52
12 hours/day	10.8 kWh	£3.24	£3.78
24 hours/day	21.6 kWh	£6.48	£7.56

Monthly Operating Costs (Estimated)

Usage Pattern	Monthly kWh	Cost @ £0.30/kWh*	Cost @ £0.35/kWh*
Light Use (8h/day)	216 kWh	£64.80	£75.60
Moderate Use (12h/day)	324 kWh	£97.20	£113.40
Continuous (24h/day)	648 kWh	£194.40	£226.80

Annual Operating Costs (Estimated)

Usage Pattern	Annual kWh	Cost @ £0.30/kWh*	Cost @ £0.35/kWh*
Light Use	2,592 kWh	£777.60	£907.20
Moderate Use	3,888 kWh	£1,166.40	£1,360.80
Continuous	7,776 kWh	£2,332.80	£2,721.60

*Note: Electricity rates vary by supplier and tariff. These calculations use indicative UK domestic rates. Check your actual electricity costs for precise estimates. Commercial rates may differ significantly.

Comparison vs. Alternative Methods:

Method	Daily Cost*	Annual Cost*	Effectiveness
CDP40T Dehumidifier	£2.16-£6.48	£780-£2,330	⭐⭐⭐⭐⭐ Excellent
Standard Dehumidifier	£3.50-£8.00	£1,280-£2,920	⭐⭐⭐ Adequate
Ventilation Only	£1.50-£4.00	£550-£1,460	⭐⭐ Poor (heat loss)
Do Nothing	£0	£0	❌ Structural damage risk

*Based on moderate 12-hour daily usage at £0.30/kWh

🔧 Installation Clearance & Placement Guidelines

Professional Installation Requirements

Through-Wall Opening Specifications

• Required Wall Opening Width: 610 mm
• Required Wall Opening Height: 395 mm
• Wall Thickness Accommodation: Flexible with extension kits

Minimum Clearance Requirements

• Above Unit (Ceiling): 225 mm minimum
• Below Unit (Floor): 225 mm minimum
• Total Minimum Room Height: 727 mm + unit height (700 mm) = 1,427 mm

Optimal Placement Considerations

✅ Do:

• Install in adjacent heated plant room (10-36°C)
• Position for clear air circulation both sides of wall
• Ensure level horizontal mounting for proper condensate drainage
• Provide 3/4″ BSP condensate drain with 2% minimum fall
• Allow access to front panel for filter maintenance
• Locate near electrical supply point (230V)

❌ Avoid:

• Placement near radiators or heating sources
• Locations with restricted airflow
• Areas with excessive dust or debris
• Unheated spaces below 10°C
• Direct exposure to outdoor elements
• Positions requiring frequent equipment relocation for access

Professional Installation Strongly Recommended

This system requires:

• Precise wall cutting and preparation
• Proper electrical installation (qualified electrician)
• Correct duct kit assembly and sealing
• BMS integration setup (if applicable)
• Condensate drainage configuration
• Compliance with local building codes and regulations

🛠️ Maintenance & Care Schedule

Keep Your System Running Perfectly

Monthly Service (10 minutes)

1. Clean Air Filter: Remove, wash in warm soapy water or vacuum thoroughly, reinstall
2. Check Condensate Drain: Ensure water flows freely, clear any blockages
3. Inspect Drip Tray: Clean if necessary to prevent standing water
4. Visual Check: Look for any signs of damage or unusual operation

Annual Service (1-2 hours)

1. Deep Clean Inside: Vacuum dust and debris from internal components
2. Condenser Coil Cleaning: Thoroughly vacuum or carefully clean condenser
3. Evaporator Inspection: Wash lamella evaporator if heavily soiled (warm soapy water)
4. Electrical Connections: Check and tighten all connections
5. Control System Check: Verify BMS communication, USB logging function
6. Performance Test: Confirm dehumidification capacity and RH control accuracy
7. Filter Replacement: Replace filter if damaged (PPI 15, order no. 094686)

Professional Service Requirements

• Refrigerant System: Must only be serviced by qualified refrigeration engineers
• Electrical Work: All electrical maintenance requires qualified electrician
• BMS Programming: Modbus configuration should be performed by controls specialists

Signs Your System Needs Professional Attention

• ❌ LED flashing red (HP or LP error codes)
• ❌ Reduced dehumidification performance
• ❌ Unusual noises or vibrations
• ❌ Ice formation on evaporator coils
• ❌ Water leakage or overflow
• ❌ Error codes displayed on control panel

❓ Frequently Asked Questions

Q: What size pool room is the CDP40T suitable for? The CDP40T is ideally suited for indoor pool rooms between 30-75 m³. This typically covers small to medium residential indoor pools (3m × 6m up to 4m × 8m) with standard ceiling heights (2.5-3m). For larger installations, consider the CDP50T (52 L/day) or CDP70T (69 L/day) models.

Q: How loud is the CDP40T during operation? At just 43 dB(A) measured at 1 metre, the through-wall CDP40T is remarkably quiet – comparable to a whisper or quiet library. The through-wall design further reduces noise in the pool area by locating the unit in an adjacent plant room. Wall-mounted versions measure 46 dB(A).

Q: Can I install this myself or do I need a professional? Professional installation is strongly recommended. Installation requires wall cutting, electrical work (230V), proper duct sealing, condensate drainage setup, and potentially BMS integration. Qualified tradespeople ensure correct installation, compliance with building regulations, and preserve your warranty coverage.

Q: What’s included in the ZZCDP40T kit? The complete kit includes: CDP40T through-wall dehumidifier unit, CDP40T/DUCT through-wall duct kit (inlet/outlet sections, grills, inlet filter), extension pieces for various wall thicknesses, wall mounting brackets, and installation hardware. You’ll need to arrange condensate drainage and electrical supply separately.

Q: Will this work with salt chlorination systems? Yes. The CDP40T is designed for pool environments with either traditional chlorine dosing (1-2 ppm free chlorine) or salt chlorination systems (up to 30,000 ppm NaCl). The epoxy-coated coils and powder-coated metal components resist corrosion from both systems. Always maintain water chemistry within recommended parameters.

Q: How often do I need to clean or replace the filter? Clean monthly by removing the filter from behind the front grille and either washing in warm soapy water or vacuuming thoroughly. Replace when damaged or worn (PPI 15 filter, order no. 094686 available through Dantherm dealers). Regular filter maintenance ensures optimal airflow and system efficiency.

Q: Can I control this remotely or integrate with building management? Yes. The CDP40T features Modbus RTU (RS-485) communication for Building Management System integration, allowing remote monitoring and control. It also includes a USB port for data logging and software updates. Optional wireless remote control (DRC1) available as accessory for standalone applications.

Q: What happens if the unit detects a problem? The CDP40T features comprehensive safety systems. The 4-digit display shows error codes (HP for high pressure, LP for low pressure, SENS for sensor faults). An LED indicator changes colour (red for errors, blue for defrost, yellow for service due) and the optional alarm output can connect to your BMS. The unit automatically shuts down safely if temperatures exceed limits.

Q: Does it provide heating as well as dehumidification? The base CDP40T unit provides 1.62 kW of heat to the air as a byproduct of the dehumidification process (approximately 5°C temperature rise). For additional heating, optional accessories include Low Pressure Hot Water (LPHW) air heating coil or electric heating coil, providing up to 3.32 kW or 2 kW respectively.

Q: How energy-efficient is the CDP40T? Very efficient. With a Specific Energy Consumption (SEC) of 0.47 kWh/litre, the CDP40T removes moisture at low energy cost. Operating 12 hours daily costs approximately £3.24/day (at £0.30/kWh), significantly less than constantly heating fresh air through ventilation alone. The intelligent control system only runs when needed, further reducing energy waste.

Q: What warranty coverage is included? All CDP units come with a two-year warranty: first year covers parts and labour, second year covers parts only. Warranty requires proper installation by qualified professionals, use within specified operating parameters (10-36°C, 40-100% RH), and maintenance of pool water chemistry within recommended ranges.

Q: How do I know if my pool room conditions are suitable? The unit operates in 10-36°C ambient temperature and 40-100% RH humidity. Your pool water should be maintained at appropriate chemical levels: 1-2 ppm free chlorine (for chlorine pools) or <30,000 ppm salt (for salt systems), pH 7.2-7.6, total alkalinity 80-150 ppm, and calcium hardness 250-450 ppm. Poor water chemistry can void your warranty.

✅ Why Effective Dehumidification Matters

Protecting Your Investment

Prevent Structural Damage Excess moisture in indoor pool environments causes condensation on cold surfaces, leading to water damage, wood rot, metal corrosion, and concrete deterioration. The CDP40T maintains optimal humidity levels (typically 55-60% RH), preventing these costly issues before they start.

Maintain Air Quality High humidity creates ideal conditions for mould and mildew growth. By keeping humidity controlled, the CDP40T helps maintain healthy air quality, reducing allergens and preventing musty odours.

Enhance Comfort Properly controlled humidity makes the pool environment more comfortable for swimmers. Too humid feels sticky and oppressive; the CDP40T maintains the perfect balance for enjoyable swimming conditions.

Protect Pool Equipment Pool pumps, heaters, controllers, and lighting systems all suffer accelerated deterioration in high-humidity environments. Controlled humidity extends equipment lifespan and reduces replacement costs.

Preserve Furnishings Poolside furniture, window treatments, decorative elements, and even electronic equipment like TVs and sound systems last longer in properly dehumidified spaces.

Energy Efficiency Controlling humidity through dehumidification is far more energy-efficient than attempting to ventilate away moisture with heated outdoor air. The CDP40T recycles heat from the dehumidification process, contributing to space heating.

🏗️ Optional Accessories & Upgrades

Enhance your CDP40T system with professional accessories:

Wireless Remote Control (DRC1) Control your dehumidifier from anywhere in the pool area. Bluetooth connectivity, battery-powered, no additional wiring required.

Floor Mounting Kit Alternative installation option for situations where through-wall or wall mounting isn’t practical.

Low Pressure Hot Water (LPHW) Air Heating Coil Adds 3.32 kW of space heating integrated into the airflow. Total heat output: 4 kW. Requires boiler connection (12mm, 4.2 L/min flow rate). Ideal for maintaining comfortable temperatures during winter operation.

Control Valve for LPHW Air Heating Coil Automatic temperature control for LPHW heating option.

Electric Heating Coil Adds 2 kW of electric space heating. Total heat output: 2.66 kW. No boiler required – direct 230V connection. Perfect for smaller spaces or where water heating isn’t available.

Through-Wall Duct Kit Extensions Accommodate various wall thicknesses with additional extension sections.

Duct Lead-In Adapter Connect to existing ductwork for custom air distribution solutions.

External RH/T Sensor Monitor and control humidity from a remote location. Overrides internal sensors for precise control of specific zones.

Contact your supplier to discuss which accessories best suit your installation requirements.

🌟 The Complete Indoor Pool Climate Solution

The ZZCDP40T represents the culmination of decades of dehumidifier engineering expertise from Dantherm, Denmark’s leading manufacturer of climate control solutions. This isn’t just a dehumidifier – it’s a comprehensive system designed specifically for the challenging environment of indoor swimming pools.

Professional Specification Engineered to exacting standards and manufactured in Denmark with ISO 9001 certification, the CDP40T delivers reliable, long-term performance in demanding commercial and residential applications.

Complete Package Solution With the integrated through-wall duct kit, everything you need for professional installation is included. No searching for compatible components or worrying about fitment – it’s all designed to work together seamlessly.

Energy Efficiency In today’s climate, energy efficiency isn’t optional – it’s essential. The CDP40T delivers exceptional dehumidification performance while consuming minimal power, helping you control costs and reduce environmental impact.

Smart Integration BMS compatibility via Modbus communication means the CDP40T seamlessly integrates into modern building automation systems. Monitor performance, adjust settings, and receive alerts remotely through your existing building management platform.

Built to Last Corrosion-resistant construction with epoxy-coated coils and powder-coated components ensures years of trouble-free operation in harsh pool environments. This is equipment built for the long haul.

Peace of Mind Backed by a comprehensive two-year warranty and supported by a network of trained service technicians, your investment is protected. Dantherm’s reputation for quality and reliability means you can trust your climate control system to perform when it matters.

📞 Ready to Transform Your Indoor Pool Environment?

The ZZCDP40T through-wall dehumidifier system delivers professional-grade climate control that protects your facility, enhances comfort, and operates efficiently. Whether you’re specifying equipment for a new build, upgrading an existing installation, or replacing a failing system, the CDP40T offers the performance and reliability you need.

What Happens Next:

1. Assess Your Requirements: Use the room volume guidelines to confirm the CDP40T suits your space
2. Review Documentation: Download the technical PDFs to understand installation requirements
3. Consult Professionals: Speak with your installer about electrical, drainage, and structural requirements
4. Order Your System: Purchase through authorised Parts4Tubs channels
5. Professional Installation: Engage qualified tradespeople for installation and commissioning
6. Enjoy Perfect Climate: Experience the comfort and protection of professional dehumidification

Need Larger Capacity? For pool rooms exceeding 75 m³, consider the CDP50T (52 L/day, 680 m³/hr) or CDP70T (69 L/day, 900 m³/hr) models. All CDP models feature the same quality construction, energy efficiency, and BMS compatibility.

Manufactured in Denmark | ISO 9001 Certified | 2-Year Warranty | BMS Compatible | R407C Ozone-Friendly Refrigerant

Investing in the ZZCDP40T means investing in the longevity of your pool facility, the comfort of your swimmers, and the efficiency of your operations. It’s a complete package that addresses the unique challenges of indoor pool environments with sophistication and reliability.