Installation and Maintenance Manual
Table Of Contents
- Warnings, Cautions and Notices
- Model Number Descriptions
- General Information
- ECM Application Notes
- Dimensions and Weights
- Receiving and Handling
- Pre-Installation
- Installation—Mechanical
- Installation—Piping
- Installation—Sensors
- Installation—Electrical
- ECM Overview and Setup
- Time Clock
- Wired Controllers—Communication Wiring
- Pre-Start
- Startup
- Tracer ZN520 Unit Startup
- Tracer UC400 Unit Startup
- General Information
- Fan Mode Switch Operation
- Tracer ZN520 Operation
- UC400 Controller Operation
- Tracer ZN520 Sequence of Operation
- UC400 Sequence of Operation
- Power-up Sequence (UC400)
- Random Start (UC400)
- Occupancy Modes (UC400)
- Timed Override Control (UC400)
- Zone Temperature Control (UC400)
- Discharge Air Tempering (UC400)
- Heating or Cooling Mode (UC400)
- Entering Water Temperature Sampling Function (UC400)
- Fan Operation (UC400)
- Exhaust Control (UC400)
- Valve Operation (UC400)
- Modulating Outdoor/Return Air Damper (UC400)
- Two-position Control Of A Modulating Outdoor Air Damper (UC400)
- Electric Heat Operation (UC400)
- Dehumidification Operation (UC400)
- Peer-to-peer Communication (UC400)
- Unit Protection Strategies (UC400)
- Maintenance
- Diagnostics
- Replacing ECM Components

Time Clock
66 UV-SVN03F-EN
2. The hour display begins to blink—use the + and/or -
buttons to select the desired setting and then press
OK.
3. The minute display begins to blink—use + / - to select
the desired
setting and press OK.
4. The day display (on the left side of the
display screen)
begins to blink—use + / - to select the desired setting
and press OK.
Note: Af
ter you set the switching ON time, the prog
number should increase by one (for example, from
prog 01 to prog 02). The number should be
blinking and the OFF symbol, , should be
displayed in the LED window. Set the switching
OFF time.
Set the Switching OFF Time
1. The hour display begins to blink—use the + and/or -
buttons to select the desired setting and then press
OK.
2. The minute display begins to blink—use + / - to select
the desired
setting and press OK.
3. The day display (on the left side of the
display screen)
begins to blink—use + / - to select the desired setting
and press OK.
Note: R
epeat the steps for setting the switching ON/OFF
times for each additional programming needed.
You can set a maximum of 20 times: 10 switching
ON times, and 10 switching OFF times.
Preset Program Selections
When selecting daily programming, preset selections can
be used (see Figure 56).
Deleting Programs
1. Press the Menu button and then press OK until the ON
hour time display of the program you want to delete is
blinking.
2. Use the + / - to select -- an
d then press OK.
Important: S
witching programs must be deleted in
ON-OFF pairs. When you delete a single ON
instruction, you must also delete the
corresponding OFF instruction.
Daylight Savings Time
Note: Use +1h button to make the change to and from
Daylight Savings Time.
• Press the +1
h button (see Figure 57) to add 1 hour to
the current time. Press the +1h but
ton again to subtract
1 hour from the current time.
Override Program (Manual)
To override the program, press the OVR (+) button (see
Figure 58).
Toggle between the unoccupied and occupied
states by pressing the OVR (+) button.
Note: When you override the program, the override
remains in effect until the next programming event
or until you press OVR again.
Figure 56. Preset program selection options
Figure 57. Daylight Savings Time
Figure 58. Manual program override
UV-SVN03_.book Page 66 Thursday, January 24, 2013 5:27 PM