York HA090 Technical Manual page 67

Standard Features
Construction
• ARI 880 certified and labeled
• 20-gauge, galvanized steel casing and valve
• G90 galvanized steel construction
• 1/2", 4 lb/ft skin, dual density fiberglass insulation glued
3
and clinch pinned
• Invertible unit facilitates control installation on the left- or
right-hand side
Hot Water Coils
• ARI 410 certified and labeled
• 1-, 2-, 3-, 4-row coils
• Left- or right-hand connections
• Tested at a minimum of 450 psig under water and rated
at 300 psig working pressure at 200°F
• Aluminum fin construction with die-formed spacer collars
for uniform spacing
• Mechanically expanded copper tubes leak tested to 450
psig air pressure and rated at 300 psig working pressure
at 200°F
• Male sweat type water connections
Primary Air Valve
• 18-gauge, G90 galvanized steel construction
• Low thermal conductance damper shaft
• Position indicator on external end of damper shaft
• 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 with Underwriters
Laboratories Inc.® (UL) 1995
• National Electrical Manufacturers Association (NEMA)
Type 1 wiring enclosure
Electric Heat
• Invertible unit facilitates control installation on the left- or
right-hand side (not applicable if equipped with a
mercury contactor)
• cETL listed as an assembly for safety compliance
• Automatic reset primary and back-up secondary
thermal limits
• Primary auto-reset high limit
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• Secondary high limit
• Airflow switch
• Single-point power connection
• Hinged electrical enclosure door
• Fusing per NEC
Optional Features
Construction
• 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 a 22-gauge liner
• Mounting brackets to accept all thread hanging rods or
wire hangers
• Discharge sound attenuator (Model TSL-SA)
Hot Water Coil
• Coil access plate for cleaning coil
• Coil circuiting options for reduced water pressure drop
• Right- or left-hand water connections
• Bottom and top access plates for cleaning
• Steam coils
Electrical Components
• Toggle disconnect switch
• Primary and secondary transformer fusing
Electric Heat
• Proportional solid state relay (SSR) heater control
• Mercury contactors (if equipped with a mercury contactor,
the unit cannot be inverted)
• Door interlocking disconnect switches
• Disconnect (toggle or door interlocking)
• Pneumatic Electric (PE) switches
• Mercury and magnetic contactors
• Manual reset secondary limit
Controls
• Factory-provided controls
• Direct Digital Controls (DDC), for N2 or LON
• Pneumatic controls
P.O. Box 423, Milwaukee, WI 53201
www.johnsoncontrols.com
Page 67
TSL – Single Duct Low Height Variable Air Volume Terminal
® networks
Printed in USA PUBL-3882