🌊 CDP50T Through-Wall Pool Dehumidifier Kit – Complete System for Larger Indoor Pools

Professional-grade dehumidification for indoor swimming pools up to 40m² | 52 litres per day capacity | Energy-efficient with BMS integration | Complete through-wall installation kit included

Transform your indoor pool environment with the ZZCDP50T Complete Dehumidifier System – a professional solution combining the powerful CDP50T dehumidifier with a purpose-designed through-wall duct kit. This integrated system delivers exceptional humidity control for larger indoor pools, protecting your property from moisture damage whilst creating a comfortable swimming environment year-round.

Complete Solution in One Package Everything you need for professional installation: CDP50T dehumidifier unit + CDP50T/DUCT through-wall kit with filters, grills, and mounting hardware. No additional components required.

Energy Efficiency That Saves You Money High-efficiency fans and compressors reduce running costs by up to 40% compared to standard dehumidifiers. Advanced control systems optimise performance, delivering maximum dehumidification with minimum energy consumption.

Built for Demanding Pool Environments

• Epoxy-coated evaporator and condenser coils resist corrosion
• Powder-coated metal components for extended lifespan
• IPX4 protection rating for wet environments
• Designed specifically for chlorinated pool atmospheres

Smart Control & Automation Integrated heating and humidity control with ON/OFF functionality. BMS (Building Management System) compatible via Modbus communication. USB port for data logging and system updates. Perfect for leisure centres, hotels, and commercial facilities.

📋 Technical Specifications at a Glance

Specification	CDP50T Details
Model	ZZCDP50T (CDP50T + CDP50T/DUCT Kit)
Dehumidification Capacity	52 litres per day / 2.1 litres per hour
Air Flow Volume	680 m³/hour
Heat Output (Dehumidifier)	2.53 kW
Total Heat (with Electric Heater)	4.53 kW
Power Supply	230V / 1 phase / 50Hz
Power Consumption	1.5 kW (dehumidifier only) / 5 kW (with heater)
Running Current	6.6A (dehumidifier) / 19.7A (with heater)
Fuse Required	13A (dehumidifier) / 30A (with heater)
Noise Level	44 dB(A) at 1 metre
Refrigerant	R407C (ozone-friendly)
Operating Range	10°C to 36°C / 40-100% RH
Condensate Drain	3/4″ connection
Protection Class	IPX4 (splash-proof)
Weight	66 kg
Dimensions (W×H×D)	1148 × 700 × 304 mm
Warranty	2 years (1st year parts & labour, 2nd year parts)

📄 Downloads & Technical Documentation

Product Information & Specifications

📄 CDP Dehumidifiers Product Brochure (opens in new tab) Complete technical specifications, performance data, and model comparison charts for the entire CDP range. Essential reading for system sizing and selection.

📄 CDP 50 Plus Electric Heater Data Sheet (opens in new tab) Detailed specifications for the integrated electric heating option, including electrical requirements and heat output performance data.

Installation & Service Documentation

📄 Quick Installation Manual (opens in new tab) Multi-language installation guide with step-by-step instructions, mounting diagrams, and wall penetration specifications. Available in English, German, French, Italian, Spanish, Portuguese, Danish, Russian, Polish, Dutch, and Swedish.

📄 Complete Service Manual (opens in new tab) Comprehensive 32-page service manual covering operation, maintenance, troubleshooting, spare parts, wiring diagrams, and cooling circuit schematics. Essential for installers and maintenance teams.

Planning & Design Resources

📄 Guidelines to Pool Hall Construction 2022 (opens in new tab) Professional construction guidelines covering insulation, vapour barriers, glazing, drainage, and material selection for indoor pool environments. Invaluable for architects, builders, and pool designers.

⭐ Key Features & Benefits

Advanced Climate Control Technology

Precision Humidity Management Adjustable humidistat from 40% to 100% RH with ±2% hysteresis ensures your pool environment stays perfectly balanced. The system automatically monitors and adjusts to maintain your target humidity level, preventing condensation on windows, walls, and structural components.

Integrated Heating System Optional 3.5 kW electric heating coil works in tandem with dehumidification to maintain comfortable air temperatures. The unit can be configured for ON/OFF heating control, providing total climate management in a single system.

Intelligent Defrost Protection Automatic defrosting strategy monitors evaporator temperature and activates hot-gas defrost when needed. This ensures consistent performance even in cooler conditions, with no manual intervention required.

Professional-Grade Construction

Through-Wall Design Benefits

• Installs in adjacent room, keeping noise away from pool area
• Robust inlet and outlet sections with high-capacity filters
• Adaptable wall extensions accommodate various wall thicknesses
• Aluminium grills for durability and attractive appearance
• Reduces pool hall equipment clutter

Corrosion-Resistant Engineering Every component is designed to withstand the harsh chlorinated atmosphere of indoor pools. Epoxy-coated heat exchanger coils prevent corrosion, whilst powder-coated metal casings resist chemical degradation. Built to last 15+ years in demanding commercial environments.

Whisper-Quiet Operation At just 44 dB(A), the CDP50T is one of the quietest dehumidifiers in its class. Through-wall installation further reduces noise in the pool hall, making it ideal for hotels, leisure centres, and high-end residential installations.

Smart Connectivity & Control

BMS Integration (Modbus) Connect to your Building Management System for centralised control and monitoring. View real-time performance data, adjust settings remotely, and integrate with other HVAC systems for optimal efficiency.

USB Data Logging Built-in USB port enables easy access to operational data. Download log files showing temperature, humidity, operating hours, and maintenance alerts. Perfect for facility managers tracking equipment performance.

External Sensor Compatibility Connect external RH/T sensors to monitor and control based on specific zone conditions. Ideal for large pool halls or facilities with multiple climate zones.

Run/Fail Alarm Output Optional alarm connection provides instant notification of system failures. Integrate with building alarm systems or facility management platforms for proactive maintenance.

🏊 Room Size & Coverage Guide

Recommended Pool Hall Dimensions

The CDP50T is designed for medium to large indoor pool installations. Use this guide to determine suitability:

Pool Hall Volume	Pool Surface Area	Suitability	Notes
Up to 200 m³	Up to 25 m²	✅ Ideal	Perfect capacity for optimal performance
200-300 m³	25-40 m²	✅ Suitable	Recommended with good building insulation
300-400 m³	40-50 m²	⚠️ Marginal	Consider CDP70T for better performance
Over 400 m³	Over 50 m²	❌ Upgrade Needed	CDP70T or multiple units recommended

Performance Factors That Affect Coverage

Building Construction Quality

• Well-insulated halls: Upper end of coverage range
• Poor insulation or extensive glazing: Lower end of coverage range
• Single/double-skin enclosures: May require upgraded capacity

Pool Usage Patterns

• Private/residential pools: Standard capacity sufficient
• Commercial/high-traffic pools: Consider 20-30% capacity margin
• Teaching pools/swim schools: Higher bather loads increase humidity

Water Temperature

• Pool water 26-28°C: Standard performance
• Pool water 28-30°C: Increased evaporation, may need extra capacity
• Hot tubs/therapy pools (32°C+): Upgrade to CDP70T or add secondary unit

⏱️ Dehumidification Performance Estimates

Expected Moisture Removal Times

These estimates help you understand how quickly the CDP50T can restore comfortable conditions after peak usage periods or maintenance shutdowns.

Typical Recovery Scenarios (pool hall air at 30°C)

Starting Humidity	Target Humidity	Pool Hall Volume	Estimated Time
85% RH	60% RH	150 m³	2-3 hours
85% RH	60% RH	250 m³	4-5 hours
75% RH	60% RH	150 m³	1-2 hours
75% RH	60% RH	250 m³	2-3 hours
90% RH	60% RH	150 m³	3-4 hours
90% RH	60% RH	250 m³	5-7 hours

⚠️ Important Notes on Estimates These times are approximate and assume:

• Pool water temperature 28°C
• No swimming activity during dehumidification
• Pool cover in use where possible
• Good building insulation
• Properly sized and installed system

Actual performance will vary based on:

• Building construction and insulation quality
• External weather conditions
• Pool cover usage
• Bather loads and activity levels
• Door/window opening frequency
• Fresh air ventilation rates

💰 Running Cost Analysis

Energy Consumption Breakdown

Dehumidifier Only Mode

• Power consumption: 1.5 kW
• Cost per hour: Approximately £0.38* (at 25p/kWh)
• Typical daily usage: 8-12 hours
• Estimated daily cost: £3.04 – £4.56

With Electric Heater (Winter Operation)

• Combined power: 5.0 kW
• Cost per hour: Approximately £1.25* (at 25p/kWh)
• Typical daily usage: 6-10 hours
• Estimated daily cost: £7.50 – £12.50

Based on UK average electricity rates (November 2025). Your actual costs will vary depending on your energy tariff, time-of-use rates, and usage patterns.

Annual Running Cost Estimate

Operating Scenario	Annual Energy Cost*
Summer Operation (dehumidifier only, 8hrs/day, 6 months)	£554
Winter Operation (with heating, 10hrs/day, 6 months)	£1,825
Typical Annual Total	£2,379

Cost Comparison vs Alternative Methods

Traditional Electric Space Heater + Standard Dehumidifier

• Combined power: 6-8 kW
• Estimated annual cost: £3,200 – £3,800
• Savings with CDP50T: £800 – £1,400/year ✅

No Climate Control (Condensation Damage)

• Redecoration costs every 3-5 years: £5,000+
• Structural repairs: £10,000+
• CDP50T prevents these costs entirely ✅

🔧 Installation Requirements

Wall Penetration Specifications

Required Wall Opening Dimensions

CDP Model	Width (Z)	Height	Depth
CDP50T	760 mm	395 mm	Wall thickness + 100mm clearance

Clearance Requirements

Minimum Spacing for Proper Operation

• Above unit: 225 mm minimum clearance
• Below unit: 225 mm minimum clearance
• Front access: 500 mm for service/filter access
• Wall thickness: 200-400 mm (extensions available for thicker walls)

Electrical Requirements

Power Supply

• 230V single phase, 50Hz
• Dedicated circuit required
• Cable size: 2.5mm² minimum
• Fuse rating: 13A (dehumidifier only) or 30A (with electric heater)
• RCD protection recommended

Control Wiring (if using optional features)

• BMS connection: RS485 Modbus protocol
• External sensors: Low-voltage connections provided
• Alarm outputs: Dry contact relay (max 50V, 500mA)

Drainage Requirements

• Connection size: 3/4″ BSP threaded
• Minimum fall: 2% gradient required
• Flow rate: Up to 2.1 litres/hour maximum
• Options: Gravity drain or condensate pump if required

Professional Installation Essential

⚠️ This is a professional installation product requiring:

• Qualified electrician for power connections
• Experienced HVAC technician for system commissioning
• Building work for wall penetration
• Compliance with local building regulations

🛠️ Maintenance Schedule

Monthly Tasks (10 minutes)

✅ Clean or replace air inlet filter ✅ Check condensate drain for blockages ✅ Visually inspect unit for any damage ✅ Verify humidity readings are accurate

Quarterly Tasks (30 minutes)

✅ Clean drip tray ✅ Inspect epoxy-coated coils for debris ✅ Check and tighten electrical connections ✅ Test control systems and BMS integration ✅ Review data logs via USB for anomalies

Annual Service (2-3 hours)

✅ Comprehensive internal inspection ✅ Vacuum clean condenser and evaporator thoroughly ✅ Test defrost cycle operation ✅ Verify refrigerant charge (if needed) ✅ Update system firmware via USB ✅ Full control system calibration ✅ Test all safety interlocks

💡 Service Reminder Function The CDP50T includes a programmable service interval reminder (1-99 weeks). The display will show “SEr” when service is due, helping you maintain optimal performance and warranty compliance.

❓ Frequently Asked Questions

General Operation

How noisy is the CDP50T in operation? The CDP50T operates at just 44 dB(A) at 1 metre distance – quieter than normal conversation (60 dB). The through-wall design further reduces pool hall noise as the unit sits in an adjacent equipment room. Most users report it’s virtually silent in the swimming area.

Can the CDP50T handle chlorinated pool environments? Absolutely. The CDP50T is specifically engineered for chlorinated pool atmospheres. Epoxy-coated evaporator and condenser coils resist chemical corrosion, whilst powder-coated metal components provide additional protection. The unit meets EN/ISO 12944-2 protection class C4 standards for corrosive environments.

What humidity level should I set for my pool? For optimal comfort and building protection, maintain 55-65% relative humidity. The CDP50T’s humidistat is adjustable from 40-100% RH. Lower settings (50-55%) are better for colder climates to prevent window condensation; higher settings (60-65%) suit warmer regions and reduce energy consumption.

How long does the unit take to dehumidify my pool hall initially? Initial dehumidification from high humidity (80%+) down to target levels (60%) typically takes 4-6 hours for a 250m³ pool hall. Once established, the system maintains target humidity with intermittent operation, usually running 8-12 hours daily depending on pool usage and external conditions.

Installation & Compatibility

Can I install this myself? Professional installation is essential and required for warranty validation. Installation involves structural wall penetration, electrical work requiring certification, refrigeration system knowledge, and BMS integration. Most installations take 6-8 hours with two qualified technicians.

What wall thicknesses can the through-wall kit accommodate? The standard CDP50T/DUCT kit suits walls from 200-300mm thick. Extension kits are available for thicker walls up to 500mm. The adaptable design ensures proper sealing regardless of wall construction (brick, block, timber frame).

Is it compatible with my existing pool heating system? Yes. The CDP50T works independently of your pool water heating. The optional integrated electric air heater (3.5 kW) heats pool hall air only, not water. For water heating integration, you’d need a separate system. The unit’s 2.53 kW heat output from dehumidification provides some free air heating as a bonus.

Can I connect it to my building management system? Yes, via Modbus RTU (RS-485) communication protocol. This allows central monitoring and control of humidity setpoints, temperature, operating status, and alarm conditions. The system integrates with most modern BMS platforms including Trend, Tridium, Siemens, and Honeywell.

Running Costs & Efficiency

How much does it cost to run per month? Monthly running costs vary by usage, but typical scenarios are:

• Summer: £80-100/month (dehumidifier only, 8 hours/day)
• Winter: £160-220/month (with heating, 10 hours/day)

These costs are 30-40% lower than traditional separate heating and dehumidification systems due to the CDP50T’s high-efficiency components and heat recovery design.

Will it reduce my heating bills? Yes, significantly. The dehumidification process generates 2.53 kW of heat, which is returned to the pool hall. This “free” heat reduces the load on your space heating system. Users report 25-35% reduction in overall pool hall heating costs after installation.

Does it need to run 24/7? No. The CDP50T automatically cycles on/off based on humidity readings. During periods of low pool usage or with a pool cover in use, the unit may only run 4-6 hours daily. High-use periods or very humid weather may require 12-16 hours of operation. The intelligent control system optimises run-time for efficiency.

Maintenance & Support

How often do filters need replacing? The air inlet filter should be cleaned monthly (vacuum or wash in soapy water). With proper cleaning, filters last 12-18 months before replacement is needed. Replacement filters (PPI 15, part number 094686) are available through Dantherm dealers.

What’s covered under warranty? The CDP50T includes a comprehensive 2-year warranty:

• Year 1: Full parts and labour coverage
• Year 2: Parts-only coverage (labour costs apply)

Warranty requires professional installation and annual servicing as per manufacturer guidelines.

Is refrigerant topping-up required? Not under normal operation. The system is factory-sealed with R407C refrigerant (0.9 kg charge). If refrigerant loss occurs, it indicates a leak requiring professional repair. Annual service checks should verify refrigerant charge levels.

Can I get remote monitoring and alerts? Yes, via the BMS interface or optional external alarm connection. Set up email/SMS alerts through your BMS for high humidity conditions, system failures, or maintenance reminders. The USB data logging function also provides detailed operational history for trend analysis.

⚠️ Important Safety Information

Water Chemistry Requirements

Pool Water Must Be Properly Balanced The CDP50T warranty requires adherence to strict water chemistry standards:

For Chlorinated Pools:

• Free chlorine: 1.0-2.0 ppm
• Combined chlorine: Max 1/3 of free chlorine
• pH: 7.2-7.6
• Total alkalinity: 80-150 ppm
• Calcium hardness: 250-450 ppm
• Total dissolved solids: <2000 ppm
• Sulphates: <360 ppm

For Salt-Chlorinated Pools:

• Salt (NaCl): <30,000 ppm
• Total dissolved solids: <5500 ppm
• pH: 7.2-7.6
• Total alkalinity: 80-150 ppm
• Calcium hardness: 250-450 ppm
• Sulphates: <360 ppm

⚠️ Failure to maintain proper water chemistry will void your warranty and can cause premature equipment failure through accelerated corrosion.

Operating Conditions

• Temperature range: 10°C to 36°C ambient air
• Humidity range: 40-100% RH (optimum performance 60-80% RH)
• Not suitable for outdoor installation
• Not suitable for unheated spaces in winter

Electrical Safety

⚠️ Installation must comply with current IEE Wiring Regulations (BS 7671) ⚠️ RCD protection (30mA) strongly recommended ⚠️ Isolator switch must be installed within sight of unit ⚠️ Only qualified electricians should perform electrical work

📦 What’s Included in the Box

CDP50T Dehumidifier Unit

✅ Main dehumidifier with integrated control panel ✅ Wall mounting bracket and spacers ✅ Epoxy-coated evaporator and condenser coils ✅ High-efficiency fan and compressor system ✅ Integrated ON/OFF heating and humidity control ✅ USB port for data logging and updates ✅ RS485 Modbus communication interface

CDP50T/DUCT Through-Wall Kit

✅ Robust inlet and outlet duct sections ✅ High-capacity PPI 15 air filter ✅ Durable aluminium inlet and outlet grills ✅ Wall sleeve components for secure installation ✅ Extension kit for various wall thicknesses ✅ All mounting hardware and gaskets

Documentation & Support

✅ Quick installation guide (multi-language) ✅ User manual and warranty card ✅ Wiring diagrams and technical specifications ✅ Access to online service manuals and support resources

🏆 Why Choose the CDP Range?

Danish Engineering Excellence

Manufactured by Dantherm in Denmark, the CDP range represents over 50 years of pool dehumidification expertise. Every unit undergoes rigorous quality control testing and meets stringent European standards:

• CE certified to Machinery Directive 2006/42/EC
• EMC Directive 2014/30/EU compliance
• RoHS Directive 2011/65/EU compliant
• REACH Regulation 1907/2006/EC certified
• ISO 9001 Quality Management certified

Proven Track Record

The CDP series is installed in thousands of facilities worldwide:

• Hotels and spa complexes
• Leisure centres and health clubs
• School swimming pools
• Private residential installations
• Therapy and rehabilitation pools
• Holiday parks and campsites

Long-Term Value

15+ Year Lifespan With proper maintenance, CDP dehumidifiers typically operate for 15-20 years. The corrosion-resistant construction and high-quality components ensure long-term reliability even in demanding commercial environments.

Energy Efficiency Pays Back The CDP50T’s efficient design typically pays for itself through energy savings within 3-5 years compared to less efficient alternatives. The heat recovery feature alone can save £300-500 annually on heating costs.

Protects Your Investment Effective humidity control prevents:

• £5,000-15,000 in structural damage repairs
• £3,000-8,000 in redecoration costs
• £1,000-3,000 in equipment corrosion replacement
• Invaluable protection of building fabric and occupant health

🌟 Summary: Is the CDP50T Right for You?

Perfect For:

✅ Indoor pool halls from 150-300 m³ volume ✅ Pool surface areas 25-40 m² ✅ Commercial leisure facilities requiring BMS integration ✅ Installations requiring low noise levels ✅ Facilities wanting comprehensive climate control ✅ Pool halls with adjacent equipment rooms ✅ Applications requiring professional monitoring and control

Consider Alternatives If:

❌ Your pool hall exceeds 400 m³ (consider CDP70T) ❌ You need wall-mounted rather than through-wall installation (consider CDP50 standard) ❌ Your pool is outdoors (different equipment needed) ❌ You need a portable solution (consider mobile units)

📞 Next Steps

Professional Support Available

The CDP50T is a professional system requiring expert installation and commissioning. We recommend consulting with a qualified pool equipment specialist who can:

• Assess your specific pool hall environment
• Verify system sizing and compatibility
• Provide detailed installation quotations
• Commission the system correctly
• Set up BMS integration if required
• Provide ongoing maintenance support

Ordering Information

Product Code: ZZCDP50T Full Description: CDP50T Dehumidifier with Through-Wall and Duct Kit Includes: CDP50T dehumidifier unit + CDP50T/DUCT complete kit

Optional Accessories (sold separately):

• Wireless remote control DRC1
• LPHW (water) heating coil with control valve
• Electric heating coil (various capacities)
• External RH/T sensors
• Replacement filters (part no. 094686)

Investing in the CDP50T system means investing in:

• The long-term protection of your pool facility
• The comfort and health of swimmers
• Energy-efficient, sustainable operation
• Professional-grade climate control
• Peace of mind through proven reliability

The CDP50T represents a comprehensive solution for humidity control in indoor pool environments, combining sophisticated engineering with practical reliability to meet the demands of modern pool management.

Manufactured in Denmark by Dantherm | Distributed in the UK by Certikin International

All specifications are subject to change without notice. Performance figures based on testing at 28°C air temperature and 60% RH. Actual performance may vary depending on installation conditions and environmental factors.