Chapter 3: System Operation
Navigating the Main Menu
Page 47
Using Comfort Mode
The settings on the HVAC system are optimized primarily for operating efficiency and not for the comfort of
people. When you need to work inside the shelter for an extended period of time, you can temporarily adjust the site
temperature to your personal preference. This temporary adjustment of site temperature is referred to as the comfort
mode.
Important. The HVAC system must be On to enter comfort mode.
To turn comfort mode ON (if it is currently off) or OFF (if it is currently on), press Sel and Down together for 3
seconds.
Both the Down and Up LEDs will flash once every second to indicate the system is in comfort mode.
Note: When comfort mode has been turned on, the system will remain in comfort mode for one hour or until the
operator turns comfort mode off.
To turn comfort mode on or off, press the Sel and Down buttons together for 3 seconds. (Default run time: 1 hour)
To change the comfort mode run time and temperature set point:
1. From the main menu, press Down until the screen displays CFT.
2. Press Sel to display the comfort mode run time set point, the default is 1 (range: 1~9 hours)
3. Change the run time setting using Down or Up and then press Sel to confirm the new set point.
4. From the main menu, press Down until the screen displays SP2.
5. Press Sel to display the comfort mode temperature set point; the factory default is 72°F.
6. Change the temperature setting using Down or Up and then press Sel to confirm the new set point.
Important. If the HVAC system needs to cool aggressively to reach the comfort mode set point, both
WPUs may go into mechanical cooling mode which will trigger an A23 alarm.
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