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OPTIONS / ACCESSORIES
Item Description
Catalog 
Number
Unit Model No
156 180 210 240 300
ECONOMIZER
High Performance Economizer 
22J18 OX OX OX OX OX
Economizer Controls
 Order 2 21Z09 OX OX OX OX OX
Sensible Control Sensor is Furnished Factory O O O O O
Single Enthalpy (Not for Title 24) 21Z09 OX OX OX OX OX
Global Control Sensor Field Provided Factory O O O O O
Building Pressure Control 13J77 X X X X X
Outdoor Air CFM Control 13J76 X X X X X
 54W78 OX OX OX OX OX
Horizontal Barometric Relief Dampers 16K99 X X X X X
OUTDOOR AIR
Outdoor Air Dampers With Outdoor Air Hood
Motorized 22J27  OX OX OX OX OX
Manual 13U05  OX OX OX OX OX
¹ POWER EXHAUST (DOWNFLOW APPLICATIONS ONLY)
Standard Static, SCCR Rated 208/230V 22H90 OX OX OX OX OX
 22H91 OX OX OX OX OX
575V 22V34 OX OX OX OX OX
HUMIDITROL™+ HOT GAS REHEAT OPTION - SZVAV MODELS ONLY
 Factory O O O O O
CABINET
Combination Coil/Hail Guards 13T12 X X X X X
1
 Field installed Power Exhaust requires Economizer with Outdoor Air Hood and
X = Field Installed