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                80 Series WALL THERMOSTATS
 Selectable Programming
• For maximum flexibility, choose from 7 Day, 5+1+1 Day or Off on all programmable models Dual Fuel Standard on All Staging Models
• Industry proven algorithms adjust automatically to satisfy a call for heat the most efficient
  way based on the system configuration.
• No outdoor sensors or settings required.
• A fossil fuel kit may be added if user selectable balance point settings are desired. Battery or Hardwire
• Permanent program retention during power loss
• Optional continuous display light (with "C wire")
• 2 replaceable AA batteries provided
Comfort and Convenience
• Auto heat/cool changeover option on Universal models
• Keypad Lockout
• Room temperature display can be recalibrated up to +/- 5°
• Maintains room temperature to within +/- 1°F
• Selectfrom°For°C
• Adjustable filter change reminders
• A/C compressor protection
Thermostat Display
• Backlight Button – for easier low-light viewing
• Optional Continuous Display Light (with "C wire")
Energy Performance
• Energy Aware qualified
• Energy savings up to 30%
                      Stages Dual Selectable Program
Part No. (H/C) Fuel Program Periods Application Reminder
1F85U-42PR 4H / 2C 1F85U-42NP 4H / 2C 1F85U-22PR 2H / 2C 1F85U-22NP 2H / 2C 1F83H-21PR 2H/1C 1F83H-21NP 2H / 1C 1F83C-11PR 1H / 1C 1F83C-11NP 1H / 1C
Filter Change
√ 7, 5-1-1 or None 4 or 2 Universal √ √ Universal
√ 7, 5-1-1 or None 4 or 2 Universal √ √ Universal
1F85U-22PR Universal
                             √ 7,5-1-1orNone 4or2 HeatPump √
   √
1F83H-22NP Heat Pump 1F83C-11NP Heat Pump
238 Part numbers and illustrations are for identification only © 1971-2018 w.d. armstrong corp.
Heat Pump
7, 5-1-1 or None 4 or 2 Conventional √
  Conventional
                       




























































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