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Airtherm Hydronic Unit Heaters. Steam and Hot Water Horizontal and Vertical. Horizontal Unit– Standard (Header Type). Available in steam or hot water Casing constructed out of 20 gauge die-formed steel Standard with adjustable horizontal louvers Totally enclosed fan motor standard
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AirthermHydronic Unit Heaters Steam and Hot Water Horizontal and Vertical
Horizontal Unit– Standard (Header Type) • Available in steam or hot water • Casing constructed out of 20 gauge die-formed steel • Standard with adjustable horizontal louvers • Totally enclosed fan motor standard • (19) Sizes 18-360 MBH • Coil connections on top and bottom of unit • ETLc Certified
Horizontal Standard Coils • Cast bronze saddles braised to copper header • Copper tubing • Aluminum fins • Factory tested at 200 PSI • Max working pressure 150 PSI • Max steam temperature 366 ⁰F • Pipe connections have internal threads for ease of connection
Horizontal Unit - Serpentine • Hot water only • Casing constructed out of 20 gauge die-formed steel • Standard with adjustable horizontal louvers • Totally enclosed fan motor standard • (4) Sizes 8-36 MBH. • Coil connections on side of unit • OSHA fan guard is standard • ETLc Certified
Horizontal Serpentine Coils • Coil is serpentine design with 3/8” copper tubing. Tubing connections shall be 3/8” copper tubing, type “M” • Aluminum fins • Factory tested at 200 PSI • Max working pressure 150 PSI • Pipe connections have internal threads for ease of connection
Vertical Louvers (Horizontal Units) • Vertical louvers are available as a field installed accessory • Allows for the adjustment of airflow for 4-way air control
Vertical – Standard • Available in steam or hot water • Casing formed by two square steel plates • Totally enclosed fan motor standard • (15) Sizes 41-705 MBH • Coil connections on top and bottom of unit • ETLc Certified
Vertical Unit Coil • Copper coil with aluminum fins mechanically bonded to the tubes • Coils are tested at 375 PSI • Max working steam pressure of 75 PSI or hot water up to 225 PSI or 325 ⁰F • Threaded steel pipe coil connections
Vertical – Low Output • Field knock-outs • (15) Sizes 34-620 MBH • Reduced temperature rise
Louvers (Vertical) • OSHA Fan Guards • Louver Cone Diffuser
Motors • Explosion Proof • Totally Enclosed
Steam Pressure and Water Control • Steam Pressure Control • Strap on Hot Water Control
Starter and Speed Control Switch • Manual Starter • 5.0 Amp Speed Control Switch
Phenolic Coating • V1 – Phenolic Coating (Air Dried) • The unit is coated with the HeresiteVR-514 coating. • It is a special primer-finish combination that is specifically designed for salt water services. • It is ideal for use in building located on or near the ocean or other large bodies of salt water. • V2 – Phenolic Coating (Baked) • The unit is coated with the Libcote-7-9818 coating. • It is specifically designed for use in moist, wet or damp environments. • It is ideal for use in waste water treatment plants or in spaces with excessive amounts of steam or humidity in the air.
HA Tstats • U1- Line Voltage Stat “Off/Auto Switch” • U2 – Line Voltage Stat “Auto/Off/Fan Switch” • U3 – Line Voltage Stat “Auto/Off/ Fan Switch”
Tstats Continued • U4 – Celsius Line Voltage Thermostat • W1 – T6169C Line Voltage Thermostat w/Subbase (Light Duty) – (VA Only)
VA Tstats • W2 – T4051A Line Voltage Thermostat (Heavy Duty) • W4 – Q651A1009 Stat Subbase Only (Used with T4051A1003 for “Off/Auto Switch”)
Disconnect • 460/575 Three Phase • 208/230 Three Phase • 115/230 Single Phase
HA Room Layout When selecting unit size and location keep the following items in mind: • How close will the unit be to people and small items? You don’t want a unit 4 feet from someone’s desk blowing 5,500 CFM at them • Always direct units toward areas of higher heat loss such as bay doors and truck loading docks • Fans with higher RPM will be louder than fans with lower RPM • See unit IOM for additional information