💨 CDP70T Complete Through-Wall Dehumidifier System for Large Indoor Swimming Pools

Professional Climate Control Solution for Aquatic Facilities

Transform your indoor pool environment with the ZZCDP70T – a complete, high-performance dehumidification system specifically engineered for large-scale swimming pools, aquatic centres, and commercial pool facilities. This comprehensive kit combines the powerful CDP70T through-wall dehumidifier with a purpose-designed duct assembly (CDP70T/DUCT), delivering professional-grade humidity control that protects your building, equipment, and provides optimal comfort for swimmers.

Complete Installation Package – Everything you need in one kit: CDP70T dehumidifier unit plus through-wall duct assembly with grills and filter

Maximum Capacity – Removes up to 69 litres of moisture per day (2.8L/hour), making it ideal for larger pools up to 80m² surface area

Energy Efficiency – Advanced heat pump technology delivers 3.24kW heating while consuming only 1.8kW power

Whisper-Quiet Operation – Just 47 dB(A) at 1 metre for through-wall installation, ensuring peaceful pool environments

Professional Integration – Modbus BMS compatibility, USB connectivity, and advanced control options for commercial facilities

Built to Last – Epoxy-coated evaporator and condenser coils plus powder-coated metal parts ensure long-term durability in corrosive pool environments

🏊 Ideal For These Applications

• Large Indoor Swimming Pools – Residential pools 60-80m² surface area
• Commercial Aquatic Centres – Health clubs, leisure centres, gyms with pools
• Hotel & Spa Facilities – Pool areas requiring professional climate control
• Therapy & Rehabilitation Pools – Medical and physiotherapy facilities
• Holiday Parks & Campsites – Indoor pool facilities for guests
• Schools & Universities – Educational facility swimming pools

🎯 Key Features & Benefits

Advanced Dehumidification Technology

Heat Pump Operation – Cools air below dew point to condense moisture, then reheats it approximately 5°C warmer than intake, returning comfortable dry air to the pool hall

Intelligent Defrost System – Automatically monitors evaporator temperature and activates defrost cycle when needed, ensuring consistent performance year-round

High Airflow Capacity – Moves 900m³/hour of air through the unit for rapid humidity control in large spaces

Energy-Saving Smart Controls

Integrated Humidity Control – Adjustable humidity setpoint from 40-99% RH with automatic start/stop operation

Optional Temperature Control – Compatible with LPHW (low pressure hot water) or electric heating coils for complete climate management

Hourly Check Function – Fans activate for 1 minute every hour to sample humidity; unit only runs when needed, maximizing energy savings

Compressor Protection – Built-in timer prevents rapid cycling (maximum 10 starts per hour, minimum 6 minutes between starts)

Professional Installation Features

Through-Wall Design – Install in adjacent plant room to keep noise and equipment out of the pool hall

Complete Duct Kit Included – Heavy-duty inlet/outlet grills, industrial-grade filter, and wall sleeves for professional installation

Flexible Mounting – Wall-mounted design saves floor space in equipment rooms

Universal Electrical – Single phase 230V/50Hz supply, 8A running current, 20A fuse rating

Building Management Integration

Modbus RTU (RS-485) – Direct connection to building management systems for centralized control and monitoring

USB Port – Data logging, software updates, and performance analytics

External Sensor Capability – Connect remote RH/T sensors for precise pool hall monitoring

Alarm Outputs – Run/Fail relay contacts for integration with facility alarm systems

12V DC Control Outputs – For optional heating coil control and external fans

Durability & Reliability

Corrosion-Resistant Construction – Epoxy-coated evaporator and condenser coils withstand harsh pool chemistry

Powder-Coated Metal – All metal components pre-treated for maximum longevity in high-humidity environments

R407C Refrigerant – Ozone-friendly refrigerant with 1.2kg charge, GWP 1774

IPX4 Protection – Water splash protection suitable for pool environments

Danish Manufacturing – Dantherm quality with 2-year warranty (1st year parts & labour, 2nd year parts)

📊 Complete Technical Specifications

Specification	CDP70T System
Model Number	ZZCDP70T (CDP70T + CDP70T/DUCT Kit)
Dehumidification Capacity	69 litres/day (2.8 L/hour)
Air Volume	900 m³/hour
Heat Output (Dehumidifier)	3.24 kW
Power Supply	230V / 1-phase / 50Hz
Power Consumption	1.8 kW nominal
Running Current	8 Amps
Required Fuse Rating	20 Amps (motor rated)
Noise Level	50 dB(A) at 1m (wall) / 47 dB(A) (through-wall)
Refrigerant Type	R407C (1.2kg charge)
Operating Temperature Range	10°C to 36°C
Operating Humidity Range	40% to 100% RH
Humidity Control Range	40-99% RH (adjustable)
Condensate Drain Connection	3/4″ BSP
Protection Class	IPX4
Weight	77.5 kg

Dimensions (Through-Wall Model)

Dimension	Measurement
Width	1,483 mm
Height	700 mm
Depth	304 mm
Wall Opening Required	1,095 mm × 395 mm (H × W)
Minimum Clearances	225mm top, 225mm bottom

What’s Included in the ZZCDP70T Kit

✅ CDP70T Through-Wall Dehumidifier Unit ✅ CDP70T/DUCT Through-Wall Duct Assembly ✅ Heavy-Duty Inlet Grill ✅ Heavy-Duty Outlet Grill ✅ Industrial-Grade Air Filter (PPI 15) ✅ Wall Sleeve Extensions (customizable for wall thickness) ✅ Wall Mounting Bracket & Spacers ✅ Installation Hardware

🏊 Pool Size Suitability Guide

The CDP70T system is designed for larger indoor pool installations. Use this guide to determine suitability:

Pool Surface Area	Pool Volume (Typical)	CDP70T Suitability	Notes
40-50 m²	60-75 m³	✅ Excellent	Ideal for heavy use pools
50-65 m²	75-100 m³	✅ Excellent	Optimal capacity match
65-80 m²	100-120 m³	✅ Good	Suitable with pool cover
80-100 m²	120-150 m³	⚠️ Consider Multiple Units	May need supplementary dehumidification during peak use

Important Factors Affecting Performance:

• Pool water temperature (higher = more evaporation)
• Air temperature differential
• Bather load (more swimmers = more humidity)
• Use of pool covers when not in use
• Pool hall ventilation rates
• Water features (fountains, slides increase evaporation)

💡 Pro Tip: For pools at the upper end of the range, consider installing two smaller units rather than one large unit. This provides redundancy and allows one unit to handle baseload while the second activates during peak use.

💰 Real-World Performance & Running Costs

Estimated Operating Costs

Based on typical pool hall conditions (28°C, 60% RH) and UK average electricity rates:

Operating Scenario	Daily Runtime	Daily Cost*	Monthly Cost*	Annual Cost*
Summer (Low Use)	4-6 hours	£0.90 – £1.35	£27 – £41	£324 – £486
Spring/Autumn (Medium Use)	8-12 hours	£1.80 – £2.70	£54 – £81	£648 – £972
Winter (High Use)	12-18 hours	£2.70 – £4.05	£81 – £122	£972 – £1,458
Year-Round Average	8-10 hours/day	£1.80 – £2.25	£54 – £68	£648 – £810

*Calculated at 1.8kW consumption × £0.25/kWh (2024 average rate). Actual costs vary by supplier and usage patterns.

Energy Efficiency Advantages

Heat Recovery Benefits:

• Every litre of water condensed releases approximately 0.7kWh of heat
• At 69L/day capacity, that’s 48kWh of recovered heat daily
• This recovered heat warms the pool hall air, reducing supplementary heating requirements
• Coefficient of Performance (COP): Approximately 1.8 (delivers 1.8kW heating per 1kW consumed)

Humidity Removal Performance

Typical Daily Conditions:

Pool Hall Condition	Moisture Removal Rate	Time to Stabilize*
After Overnight (High humidity)	2.8 L/hour	2-3 hours
Normal Operation (60-65% RH)	1.5-2.0 L/hour	Continuous cycling
Heavy Bather Load (65-75% RH)	2.5-2.8 L/hour	4-6 hours recovery
Pool Cover Removed (Spike in humidity)	2.8 L/hour (max)	1-2 hours

*Times are estimates based on 70m² pool, 28°C water, 60% target RH. Actual times vary by specific conditions.

📄 Technical Documentation & Downloads

Access complete installation guides, specifications, and maintenance information:

📥 CDP 70 Technical Data Sheet (opens in new tab) Complete technical specifications, electrical requirements, and performance data for the CDP70T dehumidifier unit.

📥 Quick Installation Manual – Multi-Language (opens in new tab) Step-by-step installation guide with diagrams covering wall mounting, through-wall installation, and electrical connections. Available in English, German, French, Italian, Spanish, Portuguese, Danish, Russian, Polish, Dutch, and Swedish.

📥 Complete Service Manual – English (opens in new tab) Comprehensive 32-page service manual including troubleshooting, maintenance schedules, spare parts diagrams, wiring schematics, and LED diagnostic guides.

📥 CDP Range Product Brochure (opens in new tab) Overview of the complete CDP dehumidifier range with comparison charts, optional accessories, and application examples.

📥 Guidelines to Pool Hall Construction (opens in new tab) Essential construction guidance covering vapour barriers, insulation, glazing, and building materials for optimal pool hall design. Includes condensation prediction charts and regulatory compliance information.

🔧 Installation Considerations

Professional Installation Required

⚠️ This is a professional-grade system requiring qualified installation. Key requirements:

Electrical Installation:

• Must be performed by qualified electrician
• 230V single-phase supply with dedicated circuit
• 20 Amp motor-rated fuse or MCB
• RCD protection recommended
• All wiring must comply with current IEE Wiring Regulations (BS 7671)

Through-Wall Installation:

• Wall penetration: 1,095mm width × 395mm height
• Structural support for 77.5kg unit load
• Wall thickness accommodation up to 400mm with extensions
• Proper sealing and weatherproofing of wall penetration
• Condensate drainage with minimum 2% fall to drain point

Location Requirements:

• Install in heated adjacent room (plant room or similar)
• Minimum clearances: 225mm top and bottom for airflow
• Access required for filter maintenance and service
• Condensate drain connection within 2 metres
• Level mounting critical for proper condensate drainage

Chemical Requirements for Pool Water

⚠️ Critical for Warranty: Pool water chemistry must be maintained within these limits:

Parameter	Acceptable Range
Free Chlorine	1.0 – 2.0 ppm
Combined Chlorine	Max 1/3 of free chlorine
pH Level	7.2 – 7.6
Total Alkalinity	80 – 150 ppm
Calcium Hardness	250 – 450 ppm
Total Dissolved Solids	< 2,000 ppm (chemical dosing) / < 5,500 ppm (salt systems)
Sulphates	< 360 ppm
Salt (NaCl)	< 30,000 ppm (for salt systems only)

💡 Use the Langelier Saturation Index to ensure proper water balance. Poor water chemistry will void warranty and significantly shorten equipment life.

🛠️ Maintenance Requirements

Monthly Maintenance (User-Performed)

Air Filter Cleaning – 15 minutes

1. Unlock front cover locks at base of unit
2. Remove front panel by lifting upward
3. Extract filter from rear of front panel
4. Wash in warm soapy water or vacuum thoroughly
5. Allow to dry completely before reinstalling
6. Replace filter and secure front panel

Condensate System Check – 5 minutes

• Inspect drip tray for debris or blockages
• Verify condensate is draining freely
• Clean drain connection if flow is restricted

Annual Professional Service

A qualified technician should perform annual inspection including:

✅ Comprehensive internal inspection and cleaning ✅ Thorough vacuum cleaning of condenser coils ✅ Evaporator coil cleaning (if required) ✅ Electrical connection inspection and tightening ✅ Refrigerant pressure checks ✅ Compressor and fan motor inspection ✅ Control system functional testing ✅ BMS integration verification (if applicable) ✅ Filter replacement (Filter Part No: 094686)

Estimated Annual Service Cost: £150-£250 (typical UK rates)

Service Interval Reminder Function

The CDP70T includes a built-in service interval timer:

• Set interval from 1-99 weeks (or OFF)
• Unit displays “SEr” when service due
• Ensures timely maintenance for optimal performance
• Reset after each service completion

🌟 Optional Accessories & Upgrades

Enhance your CDP70T system with these professional accessories:

🎛️ DRC1 Wireless Remote Control Control humidity settings from the pool hall without accessing the plant room. Bluetooth connectivity up to 10 metres.

♨️ LPHW Air Heating Coil Kit Add 7.56kW heating capacity using low-pressure hot water from your boiler. Includes control valve for automatic temperature management. Total output: 9.3kW combined.

⚡ Electric Air Heating Coil 5kW electric heating element for independent temperature control. Total output: 6.27kW combined. Requires 38A fuse and upgraded electrical supply.

🏢 Floor Mounting Kit Alternative to wall mounting for certain installations. Heavy-duty floor stand suitable for plant rooms.

📏 Extended Duct Kit Additional duct extensions for installations through very thick walls (>400mm).

🔌 Advanced BMS Integration Cables Pre-configured Modbus cables and terminations for building management systems.

❓ Frequently Asked Questions

Q: How long does the CDP70T take to bring high humidity under control?

A: Starting from high humidity conditions (e.g., 75% RH after a pool cover is removed), the CDP70T typically reduces humidity to the 60% setpoint within 2-4 hours in a 70m² pool hall. The exact time depends on ambient temperature, pool water temperature, and air circulation. The unit removes 2.8 litres of moisture per hour at peak capacity.

Q: Is the CDP70T suitable for my residential pool?

A: The CDP70T is ideal for larger residential pools with surface areas between 50-80m². For smaller pools (under 50m²), consider the CDP50T model. For pools over 80m², you may need multiple units or should consult with a pool environmental specialist to assess your specific requirements.

Q: How noisy is the through-wall installation?

A: When installed through-wall (as designed), the CDP70T operates at just 47 dB(A) at 1 metre distance – equivalent to a quiet library or gentle rainfall. Most of the mechanical noise remains in the plant room, making this configuration ideal for maintaining a peaceful pool environment.

Q: Can I install this myself to save money?

A: We strongly advise against DIY installation. The CDP70T requires professional electrical installation by a qualified electrician, precise wall penetration and structural support, proper refrigerant handling, and correct plumbing for condensate drainage. Improper installation can void warranty, create safety hazards, and result in poor performance. Budget £500-£1,200 for professional installation depending on your specific requirements and site conditions.

Q: What happens if pool water chemistry is not maintained correctly?

A: Poor water chemistry (particularly chlorine levels outside 1.0-2.0 ppm or incorrect pH) produces corrosive chlorine gases that will rapidly degrade the unit’s internal components, even with epoxy-coated coils. This damage is not covered under warranty. Maintaining proper pool chemistry is essential for equipment longevity and is a warranty requirement.

Q: Does the unit need to run continuously?

A: No. The CDP70T features intelligent operation with hourly humidity checks. When humidity is below your setpoint, the unit enters standby mode and only samples air every hour. When dehumidification is needed, it operates automatically then cycles off when humidity is controlled. Most pools require 8-12 hours of operation daily, varying by season and use patterns.

Q: What’s the difference between through-wall and wall-mounted models?

A: Through-wall models (like the CDP70T) are installed with the unit in an adjacent plant room, ducting air to/from the pool hall through the wall. This keeps noise and heat in the plant room. Wall-mounted models sit entirely within the pool hall. Through-wall is preferred for new construction and offers quieter operation; wall-mounted suits retrofit situations where through-wall isn’t feasible.

Q: How do I connect this to my Building Management System?

A: The CDP70T features Modbus RTU (RS-485) communication built-in. You’ll need to configure the unit’s Modbus Slave ID (default is 1, adjustable 1-255), then connect via the RS485 terminal block on the main control board. A complete register map is available from Dantherm support. The system can report operational status, alarms, temperature, humidity, and accept remote control commands.

Q: What’s included in the warranty?

A: Dantherm provides a 2-year warranty: first year covers parts and labour; second year covers parts only. Warranty requires installation by a qualified technician, proper commissioning, pool water chemistry maintained within specification, and annual professional servicing. Keep all service records to maintain warranty validity.

Q: Can I use this in a salt water pool?

A: Yes, the CDP70T is compatible with salt chlorination systems provided total dissolved solids remain below 5,500 ppm and salt concentration stays below 30,000 ppm. All other water chemistry parameters must still be maintained. Salt systems can be more corrosive, so regular inspection and maintenance become even more critical.

Q: What size pool cover should I use with this system?

A: Any quality floating pool cover compatible with your pool design will work well. Bubble covers are popular for smaller pools; automated slatted covers suit larger facilities. Using a cover when the pool is not in use can reduce dehumidification requirements by 70-80%, significantly lowering energy costs and extending equipment life. The CDP70T will maintain humidity whether you use a cover or not, but covers improve efficiency.

Q: How often should the air filter be cleaned?

A: Under normal conditions, clean the filter monthly. In high-use facilities, dusty environments, or if you notice reduced airflow, clean every 2-3 weeks. The filter is washable and reusable. Replace only when damaged (Part No: 094686). A clogged filter reduces efficiency and can trigger high-pressure alarms.

✅ Why Buy from Parts4Tubs?

🚚 Fast UK Delivery – Quick dispatch on in-stock items

💷 Competitive Pricing – Best value for professional pool equipment

📞 Expert Support – Knowledgeable staff available for technical advice

🔧 Genuine Parts – Authentic Dantherm/Certikin products with full warranty

📦 Complete Kits – Everything you need in one convenient package

📞 Need Help Choosing?

Not sure if the CDP70T is right for your pool? Contact our team:

• Larger pools? We can advise on multi-unit configurations or higher capacity solutions
• Smaller pools? Consider the CDP50T or CDP40T models for better efficiency
• Complex installations? Our technical team can provide application-specific guidance
• Commercial projects? We work with contractors and pool builders nationwide

Get in touch today to discuss your specific pool dehumidification requirements.

🔒 Important Safety & Compliance Information

⚠️ Installation Warnings:

• This product must be installed by qualified professionals
• Electrical installation must comply with BS 7671 (IEE Wiring Regulations)
• Building modifications may require planning permission or building control approval
• Refrigerant handling requires F-Gas certified technicians
• Improper installation voids all warranties

⚠️ Operating Requirements:

• Do not operate with damaged or missing filters
• Keep air inlet and outlet grills clear of obstructions
• Do not modify refrigerant system components
• Maintain pool water chemistry within specified parameters
• Keep all access panels secured during operation

💡 User Responsibility:

• Read all installation and operating manuals before use
• Perform monthly filter maintenance as specified
• Arrange annual professional servicing
• Monitor and maintain proper pool water chemistry
• Keep maintenance records for warranty claims

Manufactured by Dantherm A/S, Denmark – ISO 9001 Registered Quality Management 015