A World of Comfort 2025 - Brochure
Airstream™42WKN Hydronic Cassette Ceiling Fan Coils
Technical Specifications
Features
Performance Features
Fans are statically and dynamically balanced for quiet operation
6 chilled water cooling models to properly match job requirements
Independent Louvers (2-3-4 Flow Directions Distributions)
Reliability Features
All equipment wiring complies with NEC requirements
Base units are UL certified for USA and Canada standards
Unit casing meets NFPA 90A requirements for flame and smoke generation
Maintenance Features
Integrated Condensate Pump
Built-in Overflow Safety Devices
Reusable wire framed filters may be vacuum cleaned
Alarm interlock relay for unit failure notification
Installation Features
Branch Ducting Capability
Fresh/Outside Air Intake
Standard Warranty
1 year parts
Options
Factory-Installed Options
Electromechanical unit controls for use with a 24V wall mounted thermostat
Programmable microprocessor controls
Electric heating coil
Hot water heating coil
Hot water coil freeze protection
Disconnect switch (non-fused)
Field-Installed Accessories
Two Position Motorized Valve Accessory package
2 or 3-Way Two-Position Control Valves with shut-off valves
Pre-Assembled piping with Fittings for Fast and Easy Installation
Wall Mounted Mechanical or Digital Thermostat
Aquastat for 2-pipe changeover systems
Duct collars for fresh air Intake or branch ducting
Spare filters
Shroud to cover unit housing for exposed mounting
Physical Data
| 42WKN Unit Size | 08 | 12 | 18 | 20 | 33 | 36 |
| Nominal Tons | 3/4 | 1 | 1-1/2 | 1-3/4 | 2-1/2 | 3 |
| Cooling Capacity (Btuh) | 6601 | 11091 | 17592 | 19087 | 29722 | 35258 |
| Dimensions/Weights | ||||||
| Height - Chassis/Fascia (in.) (not additive) | 11-3/4 / 1-1/4 | 11-3/4 / 1-1/4 | 11 / 1-3/4 | 11 / 1-3/4 | 13 / 1-3/4 | 13 / 1-3/4 |
| Width - Chassis/Fascia (in.) | 22-1/2 / 25 | 22-1/2 / 25 | 32-3/8 / 37 | 32-3/8 / 37 | 45-1/2 / 49-1/4 | 45-1/2 / 49-1/4 |
| Depth - Chassis/Fascia (in.) | 22-1/2 / 25 | 22-1/2 / 25 | 32-3/8 / 37 | 32-3/8 / 37 | 32-3/8 / 37 | 32-3/8 / 37 |
| Weight - Chassis/Fascia (lb.) | 40 / 5 | 40 / 5 | 64 / 18 | 64 / 18 | 97 / 21 | 97 / 21 |
| Chilled Water Coil | ||||||
| Type | Finned Tube | |||||
| Quantity | 1 | 1 | 1 | 1 | 1 | 1 |
| Face Area (sq ft) | 1.8 | 1.8 | 2.8 | 2.8 | 5.2 | 5.2 |
| Nominal Airflow (cfm) | ||||||
| High | 330 | 360 | 600 | 620 | 940 | 1080 |
| Medium | 300 | 330 | 540 | 600 | 850 | 940 |
| Low | 260 | 300 | 460 | 540 | 740 | 850 |
| Discharge | 4-way | 4-way | 4-way | 4-way | 4-way | 4-way |
| Unit Water Volume (gal) | 0.29 | 0.29 | 0.45 | 0.45 | 0.79 | 0.79 |
| Fan | ||||||
| Type | Centrifugal | |||||
| Quantity | 1 | 1 | 1 | 1 | 2 | 2 |
| Diameter (in.) | 12 | 12 | 5 | 15 | 14 | 14 |
| Horsepower per fan (Hp) | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 | 1/8 |
| Connections (Sweat) | ||||||
| Chilled Water Inlet, OD (in) | 5/8 | 5/8 | 7/8 | 7/8 | 7/8 | 7/8 |
| Chilled Water Outlet, OD (in) | 5/8 | 5/8 | 7/8 | 7/8 | 7/8 | 7/8 |
| Condensate, ID (in) | 3/8 | 3/8 | 3/8 | 3/8 | 3/8 | 3/8 |
| Filtration | ||||||
| Type | Cleanable Wire Framed | |||||
| Quantity | 1 | 1 | 2 | 2 | 3 | 3 |
| Arrestance | 80% | 80% | 80% | 80% | 80% | 80% |
| Condensate Pump | ||||||
| Maximum Head (in) | 30 | 30 | 30 | 30 | 30 | 30 |
| Nominal Flow Rate (gpm) | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Heating Option | ||||||
| Electric Heating Capacity (kW) | 1.5 | 4.5 | 3 | 3 | 5 | 5 |
| Hot Water Heating Capacity (Btuh) | 13799 | N/A | 29258 | 30946 | 46455 | 51600 |
| Hot Water Coil Connection, OD (in) (Sweat) | 5/8 | N/A | 5/8 | 5/8 | 5/8 | 5/8 |
| Branch Duct Option | ||||||
| Branch Duct Connections (qty) | 2 | 2 | 2 | 2 | 2 | 2 |
| Branch Duct Diameter (in) | 5 | 5 | 5 | 5 | 5 | 5 |
| Ducted Air Volume (cfm) | 80 | 80 | 100 | 125 | 200 | 220 |
| Fresh Air Option | ||||||
| Fresh Air Connections (qty) | 1-2 | 1-2 | 1-3 | 1-3 | 1-3 | 2-3 |
| Fresh Air Duct Diameter (in) | 3 | 3 | 3 | 3 | 3 | 3 |
| Fresh Air Volume (cfm) | 40 | 40 | 60 | 62 | 90 | 95 |
ID = Inside Diameter
OD = Outside Diameter
NOTES
- Cooling capacity based on 80°F dry bulb/67°F wet bulb indoor and a 45°F entering/55°F leaving chilled water temperature.
- Heating capacity based on water temperature of 180°F inlet/160°F outlet and an air temperature of 70°F dry bulb.
- Ducted air volume based on maximum air volume available through one branch duct 6ft. long, with cassette fan(s) at high speed and corresponding fascia aperture closed.
- Fresh air volume based on maximum fresh air through all knockouts connected one 10ft. long duct with fan at high speed.
Documents
Brochure
A World of Comfort 2025 - Brochure (Printer Version)
Guide Specifications
42WKN Guide Specifications, 3/4 to 3 Nominal Tons, Cooling Capacity: 7,800 to 34,300 Btuh, Heating Capacity: 17,100 to 45,200 Btuh
Installation
42WKN08-36 Airstream™ Hydronic Ceiling Cassettes
Product Data
42WKN08-36 Airstream™ Hydronic Ceiling Cassettes 50/60 Hz, 3/4 to 3 Nominal Tons
Warranty Card
Warranty - Standard Product Warranty for Commercial Equipment