ZL-20T 20 Ton Industrial FRP Counter Flow Cooling Tower for HVAC EPC Contractor
The ZL-20T integrates into HVAC chiller condenser water loops as the heat rejection component:
Loop configuration: Closed-loop chilled water from chiller evaporator to building air handlers, with condenser water pumped from chiller to ZL-20T cooling tower and back. Typical flow 16 m³/h matches the design.
Piping: 50 mm (2") flanged connections at ZL-20T inlet and outlet. Schedule 40 steel or PVC piping typical for condenser water. Pipe sizing should maintain water velocity 1.5-2.5 m/s for optimal heat transfer.
Water treatment: Standard closed-loop HVAC treatment (corrosion inhibitor + biocide) maintains clean condenser water and prevents biological fouling in the ZL-20T fill media.
Control integration: Optional BMS integration enables chiller staging based on ZL-20T leaving water temperature. Typical control setpoint: 32°C leaving water activates additional chillers.
The ZL-20T fan motor requires standard industrial power:
Voltage: 380V 3-phase 50Hz (also compatible with 400V, 415V, 440V at 60Hz with derating).
Motor specification: 0.55 kW (0.75 HP), 1440 rpm synchronous speed, IE3 efficiency class, IP55 enclosure, Class F insulation.
Full load current: 1.5 A at 380V. Cable sizing: 3 × 1.5 mm² PVC copper for runs under 50m, 3 × 2.5 mm² for runs over 50m to limit voltage drop below 3%.
Motor protection: Thermal overload relay setting 1.5 A (1.0 × FLA). Phase failure relay required for installations with unstable 3-phase supply (common in rural or generator-backed operations).
VFD compatibility: 0.75 kW VFD enables variable speed operation for partial load energy savings. 30-60 Hz speed range provides 4:1 turndown ratio.
ZL-20T foundation design per installation:
Concrete pad: 600 x 600 x 100 mm reinforced concrete pad at installation location. 200 kg/m² distributed load capacity.
Rooftop installations: Verify roof structural capacity for 300 kg operating weight + 100 kg dynamic load (wind, seismic). Most industrial buildings support ZL-20T rooftop installation.
Steel platform mounting: For elevated installations, hot-dip galvanized steel platform with vibration isolators recommended.
Anchoring: 4 × M12 expansion bolts per ZL-20T base flange. Torque to 60 Nm. Wind load design per local code (typically 0.5-1.0 kPa).
Piping support: First elbow support within 1m of ZL-20T connection to prevent nozzle stress.
Standard ZL-20T HVAC integration project timeline:
Day 1-3: Delivery and positioning at installation site. Crane or forklift required for rooftop installations (300 kg operating weight).
Day 4-5: Foundation preparation (concrete curing if new pad). Electrical and piping rough-in.
Day 6-7: Final piping and electrical connections. Tower anchoring. Motor rotation direction verification.
Day 8: Initial fill and leak test. Power-on commissioning. Performance verification at design conditions.
Day 9-10: Operator training and handover documentation delivery. Punch list closeout.
Total project duration: 10 working days from delivery to commissioning for typical retrofit installation. New construction integrates into broader HVAC system commissioning.
The ZL-20T contributes to LEED and other green building certification through documented performance:
EAc Optimize Energy Performance: 0.55 kW fan motor with IE3 efficiency class contributes to chiller energy savings. Calculated kW/ton (0.0275) below ASHRAE 90.1 baseline for cooling towers (0.04 kW/ton).
EAp Minimum Energy Performance: Fan motor efficiency documentation supports M&V (Measurement and Verification) requirements.
Water efficiency (WEc): 10 L/h drift loss below ASHRAE 188 baseline (15 L/h for equivalent capacity) supports cooling tower water consumption credits.
Material credits (MRc): FRP shell contains recycled content option. Documentation package available for LEED submittal.
For projects pursuing LEED v4 or BREEAM certification, the ZL-20T submittal package includes all required documentation templates.
The standard ZL-20T submittal package for EPC contractor design approval:
Drawing package: General arrangement, foundation plan, piping connection details, electrical wiring diagram, control schematic.
Specification sheet: Performance data, materials of construction, motor specification, certifications list.
Compliance documentation: CE Declaration of Conformity, ISO 9001:2015 quality system certification, material test certificates.
Calculation backup: Heat duty calculation, fan performance curve, head loss curve, electrical load calculation.
Installation manual: Foundation requirements, piping and electrical connections, commissioning procedure.
Submittal package format matches standard project specification requirements and includes editable CAD drawings for design team integration.
From engineering specifications to operational hand-over, the ZL-20T platform is configured for ten distinct application profiles. Explore the other nine below:
The ZL-20T (20 ton FRP counter flow cooling tower) is one of 110 ZILLION cooling tower configurations covering 10 buyer perspectives across 11 cooling capacities. The following cross-references help hvac epc contractor buyers compare related configurations and access supporting engineering resources:
The ZL-20T cooling tower is engineered in accordance with industry-recognized standards. The following authoritative sources establish the technical baseline for hvac epc contractor applications:
A mid-scale HVAC EPC contractor delivered a ZL-20T installation for a 3,000 m² commercial building retrofit. The project followed a 10-week schedule: 2 weeks engineering submittal, 4 weeks production, 2 weeks shipping, 2 weeks site installation and commissioning. The contractor submitted complete submittal package including CTI thermal performance certification, ISO 9001 documentation, and CE Declaration. The ZL-20T integrated into the existing chiller plant with ASHRAE 90.1 compliant controls.
Use the following jump links to navigate to specific sections of this product page:
This page covers the essential information hvac epc contractor buyers need when evaluating the ZL-CT series for their application. The following key takeaways summarize the most critical specifications, performance metrics, and engineering considerations:
The following questions address the most common inquiries from hvac epc contractor buyers evaluating the ZL-CT series (20 ton FRP counter flow cooling tower) for their application. Each answer references the technical specifications, performance metrics, and compliance documentation applicable to this configuration:
Standard submittal package: (1) Product data sheet with full specifications, (2) CTI thermal performance certification showing kW heat duty, (3) ISO 9001:2015 quality management certification, (4) CE Declaration of Conformity, (5) Material safety data sheets, (6) IOM manual, (7) Structural calculation report (engineer-stamped), (8) Electrical schematic, (9) Recommended spare parts list with pricing, (10) Warranty terms.
Foundation design: 150mm thick reinforced concrete pad with #5 rebar at 300mm centers. Anchor bolts: M16 stainless steel expansion at 600mm centers. Surface area: tower diameter × 1.1 minimum. For seismic zones 3 and 4: additional seismic tie-down points per ASCE 7. Engineer-of-record stamp required.
Standard: 10-16 weeks from order to operational handover. Breakdown: 2-3 weeks engineering submittal, 4-6 weeks production, 2-3 weeks shipping, 2-4 weeks site installation and commissioning. Urgent orders: 8-10 weeks at 20% premium with expedited production.
Standard integration: on/off fan motor starter with thermal overload. VFD-compatible (30-80% energy savings during shoulder seasons). BMS interface: Modbus RTU/TCP, BACnet MS-TP/IP, LonWorks. ZILLION provides integration documentation including register maps and BACnet PICS for all 110 ZL-CT variants.
Integration via Modbus RTU/TCP or BACnet MS-TP/IP. Standard register map: leaving water temperature (registers 0-1), water flow rate (2-3), fan motor current (4-5), fan vibration (6-7), basin water level (8-9), basin temperature (10-11), makeup water flow (12-13), conductivity (14-15). ZILLION provides BACnet PICS document.
LEED v4 documentation: (1) Product Declaration with material content disclosure, (2) VOC emissions certificate, (3) Recycled content certification (FRP shell 15-20% recycled glass fiber), (4) End-of-life disassembly instructions, (5) Water consumption calculation methodology, (6) Energy consumption documentation, (7) Regional materials sourcing.
The ZL-20T cooling tower is also designed in accordance with the following additional industry standards that complement the core technical baseline:
Quick Specs: ZL-CT40 industrial round cooling tower with 40-ton cooling capacity, FRP material, counter-flow design, 1.5kW fan, CE certified. Best for industrial chiller systems and mid-scale manufacturing. The water cooling tower is a device used for cooling circulating water. By exchanging heat between hot water and air, the water temperature is reduced, thus realizing the repeated use of circulating water. Water cooling towers are widely used in industrial production, air conditioning systems and other fields, and are of great significance for saving water resources and reducing energy consumption.
Quick Specs: ZL-CT60 round shape water cooling tower with 60-ton capacity, counter-flow design, FRP material, 1.5kW fan, CE certified. Best for industrial chiller systems and large-scale cooling. A water cooling tower is a device used for cooling industrial water or other liquids. Its main function is to cool down hot water through heat exchange between hot water and air so that the cooled water can be recycled.
Quick Specs: ZL-CT100 FRP round cooling tower with 100-ton cooling capacity, FRP material, 2.2kW fan, CE certified. Best for large-scale industrial cooling and high-capacity chiller systems. The counterflow cooling tower is a common type of cooling tower. It sprays hot water from top to bottom and air flows from bottom to top, enabling hot water and air to exchange heat in the packing, thereby reducing the water temperature. The counterflow cooling tower has the advantages of high cooling efficiency, compact structure and small floor area, and is widely used in industrial production, air conditioning and refrigeration and other fields.
Quick Specs: ZL-CT square drop counter-flow cooling tower with FRP material, multiple capacity options, CE certified. Best for high-temperature industrial water cooling and open cooling tower applications. The square cooling tower has the advantages of small floor area, beautiful appearance, and convenient installation. It is widely used in fields such as air conditioning and refrigeration and industrial cooling, providing effective cooling guarantee for the normal operation of various equipments.
Quick Specs: ZL-CT factory-direct industrial cooling tower with multiple types and capacities, high-efficiency design, CE certified. Best for industrial cooling applications and large-scale manufacturing. A cooling tower dissipates heat from industrial or air - conditioning systems. Its working principle involves spraying hot water onto packing to form a water film, while air flow carries away heat from the water to lower its temperature. The cooled water is recyclable, saving water resources and reducing costs. There are various types, such as open and closed cooling towers. Open ones contact outside air directly, making water prone to contamination but with lower costs. Closed ones have water circulating in sealed pipes, ensuring cleaner water but usually at a higher price. Cooling towers play a key role in fields like power plants, chemical plants, and data centers, helping maintain system operation and improve energy utilization efficiency.
The ZL-10T 10 Ton Industrial FRP counter flow cooling tower delivers 35.2 kW heat rejection at 27C wet-bulb and 32C leaving water, designed for CFO buyers evaluating cooling tower procurement for capital projects. ZILLION engineered this 10-ton FRP counter flow cooling tower with ISO 9001:2015 quality construction for long service life. The smooth FRP shell resists algae and biofilm buildup, while the aluminum alloy fan blade is fully enclosed for operator safety. Specifications include 7.81 m3/h circulation flow, 0.37 kW fan motor, 5C cooling range, and 5C approach to wet-bulb. Pricing starts at USD 1050 EXW Dongguan, with volume discounts available. MOQ 1 unit, lead time 7-15 days for cfo procurement buyers.
The ZL-10T 10 Ton Industrial FRP counter flow cooling tower delivers 35.2 kW heat rejection at 27C wet-bulb and 32C leaving water, designed for maintenance technicians with low servicing needs and easy-access components. ZILLION engineered this 10-ton FRP counter flow cooling tower with ISO 9001:2015 quality construction for long service life. The smooth FRP shell resists algae and biofilm buildup, while the aluminum alloy fan blade is fully enclosed for operator safety. Specifications include 7.81 m3/h circulation flow, 0.37 kW fan motor, 5C cooling range, and 5C approach to wet-bulb. Pricing starts at USD 1050 EXW Dongguan, with volume discounts available. MOQ 1 unit, lead time 7-15 days for maintenance technician buyers.
The ZL-10T 10 Ton Industrial FRP counter flow cooling tower delivers 35.2 kW heat rejection at 27C wet-bulb and 32C leaving water, engineered for HVAC EPC contractor projects requiring turnkey cooling tower delivery with installation support. ZILLION engineered this 10-ton FRP counter flow cooling tower with ISO 9001:2015 quality construction for long service life. The smooth FRP shell resists algae and biofilm buildup, while the aluminum alloy fan blade is fully enclosed for operator safety. Specifications include 7.81 m3/h circulation flow, 0.37 kW fan motor, 5C cooling range, and 5C approach to wet-bulb. Pricing starts at USD 1050 EXW Dongguan, with volume discounts available. MOQ 1 unit, lead time 7-15 days for HVAC EPC contractor buyers.
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