York YZB018 THRU 060, Technical Manual

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Standard Features
Construction
• ARI 880 certified and labeled
• 22-gauge galvanized steel casing and valve
• G90 galvanized steel
• 1/2”, 4lb/ft 3 skin, dual density fiberglass insulation, glued
and clinch-pinned in place
Hot Water Coils
• ARI 410 certified and labeled
• 1-, 2-, 3-, 4-row coils
• Tested at a minimum of 350 psig under water
• Mechanically expanded copper tubes leak tested
to 350 psig air pressure
• Male sweat type water connections
Primary Air Valve
• Embossed rigidity rings
• Low-thermal conducting damper shaft with
position indicator
• Mechanical stops for open and closed position
• Multi-point center-averaging airflow sensor
• Brass balancing tees
• Plenum-rated sensor tubing
Electrical Components
• cETL listed for safety compliance
• National Electrical Manufacturers Association (NEMA)
Type 1 wiring enclosure
Electric Heat
• ETL listed as an assembly for safety compliance
• Integral electric heat assembly
• Automatic reset primary and back-up secondary
thermal limits
• Single-point power connection
• Hinged electrical enclosure
• Fusing per NEC
• Airflow switch
• Ni-chrome elements
• Primary/Secondary power terminations
• Wiring diagram
Optional Features
Construction
• 20-gauge galvanized steel construction
• 3/4” or 1” fiberglass insulation
• Scrim-reinforced, foil-faced insulation meeting American
Society for Testing and Materials (ASTM) C1136 for mold,
mildew, and humidity resistance
•
1/2” Elastomeric closed-cell foam insulation
• Double wall construction with 22-gauge liner
• Mounting brackets to accept all-thread hanging rods or
wire hangers
• Low temperature construction for use in thermal storage
applications, including a thermally isolated primary air
inlet and a composite damper shaft
Hot Water Coils
• Low pressure steam coils
• Multi-circuit coils for reduced water pressure drop
• Opposite hand water connections
• Bottom and top access plates for cleaning
Electrical Components
• Full unit toggle disconnect and inline motor fusing
• Primary and secondary transformer fusing
Electric Heat
• Proportional solid state relay (SSR) heater control
• Mercury contactors
• Door interlocking disconnect switches
• Disconnect (toggle or door interlocking)
• Pneumatic Electric (PE) switches
• Mercury and magnetic contactors
• Manual reset secondary limit
• 24 volt control transformer
• Special watt densities
• Finned tubular elements
Controls
• Factory-provided controls
• Direct digital controls (DDC) for N2 or LON ® networks
• Pneumatic controls
© 2005 Johnson Controls, Inc. P.O. Box 423, Milwaukee, WI 53201 Printed in USA PUBL-3888
www.johnsoncontrols.com
TSS – Single Duct Variable Air Volume Terminal
http://www.rezine.net
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