HVAC CONTROLS Z-2000-NS Programmable Night Stat Instruction Manual
- September 9, 2024
- HVAC Controls
Table of Contents
HVAC CONTROLS Z-2000-NS Programmable Night Stat
Product Usage Instructions
- After the thermostat is powered up, touch and hold both the Clock and Mode sections for 5 seconds to enter the Installer Menu.
- Touch Next to advance through the menu or touch Back to go back.
- To disable the Daylight Saving Time feature, enter Installer Menu 30 and change the selection to 0 using the UP or DOWN arrows.
- Save changes by touching and holding Next until exiting the Installer menu.
- Touch the Clock until the hour flashes. Use the UP or DOWN arrow to set the correct hour.
- Touch the Clock again for minutes adjustment. Set the minutes using the arrows.
- Continue setting month, day, and year by following the same process.
- Select the day (e.g., Mon for Monday) by tapping Program.
- Set the hour for the occupied period and adjust the minutes accordingly.
- Adjust heating and cooling setpoints as needed.
- Choose the fan option (e.g., Always On).
- Set the hour for the unoccupied period following similar steps as above.
FAQ
- Q: How do I reset the thermostat to factory settings?
- A: To reset to factory settings, press and hold the Reset button for 10 seconds.
- Q: Can I use the Z-2000-NS with a multi-zone HVAC system?
- A: Yes, the Z-2000-NS supports up to 3 zones with appropriate wiring configurations.
Z-2000-NS PROGRAMMABLE NIGHT STAT
WIRING DIAGRAM
OVERVIEW
- The Z-2000-NS programmable touchscreen thermostat can be used for occupied and unoccupied scheduling of the Z-2000 (Version 2001) panel.
- When wired and configured properly, the thermostat takes the place of a separate 7-day clock, night stat, and override timer.
- The Z-2000-NS Programmable Fan option is used to trigger the ‘G’ fan relay to open or close the Clock Contact ‘T’ terminals on the Z-2000 (Version 2001) panel that places the system in the occupied or unoccupied mode of operation.
- The thermostat can also be used with a Z-2000-S1 Indoor Remote Sensor. 24-volt power to the thermostat is supplied by the Z-2000 (Version 2001) panel through dedicated Clock Power terminals ‘R’ and ‘C’.
- The thermostat also has a battery backup to maintain the real-time clock in the event of a power failure.
- The thermostat can be configured to provide 7-day scheduling with 2 or 4 events per day.
- For commercial schedules, 2 events per day is typical.
WIRING
Remove the factory jumper on the Z-2000 (Version 2001) panel from the NS CLOCK
CONTACT terminals.
Wire the Z-2000-NS Night Stat as shown in the wiring diagram. The Z-2000-NS
Night Stat should be located in an area that represents the general load
characteristics of the building. If the thermostat is located in an equipment
room, a remote sensor may be required. If an optional Z-2000-S1 remote sensor
is used, use separate 18-2 wires and wire the sensor to the ‘SC’ and ‘S1”
terminals on the thermostat. Polarity does not matter. The maximum wire
distance between the thermostat and the sensor is 200 feet. In applications
where 24-hour occupancy exists, a night stat may not be necessary.
Z-2000-NS PROGRAMMING INSTRUCTIONS
HOW IT WORKS
The Z-2000-NS does not control the HVAC equipment and only uses the ‘G’ fan
relay to put the Z-2000 panel in either occupied or unoccupied mode. This is
accomplished by using the Programmable Fan option so that the fan relay is
energized during occupied mode (Always On) and de-energized during unoccupied
mode (Automatic). When in Automatic mode, the fan relay will only energize
when the temperature rises above or falls below the programmed unoccupied
heating and cooling setpoints.
SYSTEM SWITCH SETTINGS
The Z-2000-NS contains a set of four system switches located on the thermostat
printed circuit board. Make sure the system switches are set as follows:
- Sw 1 = OFF
- Sw 2 = ON
- Sw 3 = OFF
- Sw 4 = OFF
INSTALLER SETUP MENU CHANGES
After the thermostat is powered up, touch and hold both the Clock and Mode
sections for 5 seconds to enter the Installer Menu.
Touch Next to advance forward through the menu or touch Back to backup.
REQUIRED MENU CHANGES
- 02= 2 (Program Schedules)
- 04 = 1 (Programmable Fan)
DAYLIGHT SAVING TIME
- The Z-2000-NS default setting compensates for Daylight Saving Time. In areas of the country where DST is not observed, the feature can be disabled by entering Installer Menu 30. Touch the UP or DOWN arrows to change the selection to 0.
- After the changes have been made, touch and hold Next until the thermostat exits the Installer menu. All changes will be stored in non-volitile memory.
SETTING THE CLOCK AND DAY OF THE WEEK
The time of day and day of the week must be set properly so that occupied and
unoccupied programs start on time.
- Touch the Clock until the hour flashes. Tap the UP or DOWN arrow to select the hour. Note: Make sure hour is correctly set for AM or PM.
- Touch Clock again and the minutes will flash. Tap the UP or DOWN arrow to select the correct minutes.
- Touch Clock again and month will flash. Tap the UP or Down arrow to select the correct month.
- Touch Clock again and the day will flash. Tap the UP or Down arrow to select the day of the month.
- Touch Clock again and the year will flash. Tap the UP or Down arrow to select the year.
- To exit the menu, touch Clock again. The proper day of the week will automatically be displayed with the clock and calendar.
PROGRAMMING EVENTS
When the thermostat is configured to provide 2 schedules per day
(Occupied/Unoccupied), 7 day per week, each event is displayed on the LCD as
DAY (Occupied) and NIGHT (Unoccupied).
- Touch Program until Mon (Monday) flashes.
- Tap Program again until the hour flashes and Day is displayed on the LCD. Use the UP or DOWN arrow to set the hour start time. Note: Make sure hour is correctly set for AM or PM.
- Tap Program again until the minutes flash. Use the UP or DOWN arrow to set the minutes.
- Tap Program again and the heating setpoint will flash. Leave the setpoint at the factory default.
- Tap Program again and the cooling setpoint will flash. Leave the setpoint at the factory default.
- Tap Program again and the fan option Automatic will flash. Use the UP or DOWN arrow to set the fan option to Always On.
- Tap Program again until the hour flashes and Night is displayed on the LCD. Use the UP or DOWN arrow to set the hour start time. Note: Make sure hour is correctly set for AM or PM.
- Tap Program again until the minutes flash. Use the UP or DOWN arrow to set the minutes.
- Tap Program again and the cooling setpoint will flash. You can use the UP or DOWN arrow to change the cooling setpoint or use the factory default of 78 degrees.
- Tap Program again and the heating setpoint will flash. You can use the UP or DOWN arrow to change the heating setpoint or use the factory default of 62 degrees.
- Tap Program again and the fan option Automatic will flash. Leave fan option set to Automatic.
- Tap Program again and CPY (Copy) will appear on the LCD. If you wish to copy the Monday program to additional days of the week, use the UP or DOWN arrow to add additional days. Example: Mon Tue Wed Thu Fri
- Once you have selected the days to be copied, touch Program. CPY will begin to flash and then the next programming day will flash. Example: If you copy the Monday schedule through Friday, Sat (Saturday) will flash. Simply repeat the programming steps for any day where the building will be unoccupied. The only required change is that both the Day and Night fan option should be set to Automatic and the heating and cooling setpoints for Day should reflect the unoccupied setpoints for Night.
- Once programming is completed, make sure the thermostat is set in the Auto mode of operation.
- Make sure the 2 AA batteries are installed in the thermostat even though it will be powered by 24 VAC. In the event of a power failure, the batteries will maintain the real-time of day. Batteries should be replaced once a year or whenever the low battery symbol appears on the LCD.
TYPICAL 7-DAY SCHEDULE HAVING 2 EVENTS PER DAY WITH SATURDAY/SUNDAY UNOCCUPIED
PROGRAM DAYS| SCHEDULE| START TIME| HEAT
SETPOINT| COOL SETPOINT| FAN MODE
---|---|---|---|---|---
MON THRU FRI| DAY| 7:00 AM| 70
FACTORY DEFAULT
| 75
FACTORY DEFAULT
| ALWAYS ON
NIGHT| 5:00 PM| 62
FACTORY DEFAULT
| 78
FACTORY DEFAULT
| AUTOMATIC
SAT AND SUNDAY| DAY| 7:00 PM| **** 62| 78| AUTOMATIC
NIGHT| 5:00 PM| 62
FACTORY DEFAULT
| 78
FACTORY DEFAULT
| AUTOMATIC
CONTACT
- www.iohvaccontrols.com
- For Technical Support Call Toll-Free: 866-225-5032 iO-06-1404-062724