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OPTIONS / ACCESSORIES
Item Description
Catalog 
Number
Unit Model No
156 180 210 240 300
ELECTRIC HEAT
  22H66 OX OX OX OX OX
 22H67 OX OX OX OX OX
  22H68 OX
 22H69 OX
 22H70 OX OX OX OX
 22H71 OX OX OX OX
  22H72 OX
 22H73 OX
 22H74 OX OX OX OX
 22H75 OX OX OX OX
  22H76 OX
 22H77 OX
 22H78 OX OX OX OX
 22H79 OX OX OX OX
  22H80 OX OX OX
 22H81 OX OX OX
ECONOMIZER
 
22J18 OX OX OX OX OX
Economizer Controls
 Order 2 21Z09 OX OX OX OX OX
  Factory O O O O O
 21Z09 OX OX OX OX OX
  Factory O O O O O
 13J77 X X X X X
 13J76 X X X X X
Barometric Relief Dampers With Exhaust Hood (required with economizer)
 54W78 OX OX OX OX OX
 16K99 X X X X X
OUTDOOR AIR
Outdoor Air Dampers With Outdoor Air Hood
 22J27  OX OX OX OX OX
 13U05  OX OX OX OX OX
¹ POWER EXHAUST (DOWNFLOW APPLICATIONS ONLY)
  22H90 OX OX OX OX OX
460V 22H91 OX OX OX OX OX
HUMIDITROL™+ HOT GAS REHEAT OPTION - SZVAV MODELS ONLY
 Factory O O O O O