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1. If no heating system, go to step 12.

2. At System Controller:

a. Turn power switch on.
b. Verify at this time the PWR light is on only.

3. Turn off all thermostats except zone 1.

4. At zone 1 thermostat

a.  Set power switch on.
b.  Set to Heat mode.
c.  Set Fan switch Auto mode.
d.  Set Heat set point several degrees above room temperature.

5.  At  System Controller:

a.  Verify W, G and PWR lights are on.
b.  Verify DPR1 light is off and DPR2 and 3 LEDs are on.

6.  At HVAC unit, verify furnace is on and blower fan is running. If the G

light on System Controller is not on, the blower fan is controlled by
the furnace; and there will be a delay before it turns on.

7.  At zone 1, verify air is coming out of register/diffuser.

8.  At  next zone:

a.  Verify air is not coming out of register/diffuser
b. At thermostat:

b-1 Set power switch on.
b-2 Set to Heat mode.
b-3 Set Fan switch to Auto mode
b-4 Set heat setpoint several degrees above room temperature.

c. Verify air is now coming out the register/diffuser.

9. At the previous zone, turn thermostat off and verify air stops coming

out of the register/diffuser.

10. Repeat steps 8 and 9 for the last zone 3.

11. Turn off all thermostats except zone 1.

12. At zone 1 thermostat:

a.  Set power switch on.
b.  Set to Cool mode
c.  Set Fan switch to Auto mode.
d.  Set cool setpoint several degrees below room temperature.

13. At System Controller:

a.  Verify Y, G and PWR lights are on. If not, cycle the System 

Controller power switch OFF and then ON; then recheck.

b. Verify DPR 1 light is off and DPR 2 through DPR 3 lights are on.

14. At HVAC unit, verify air conditioner is on and blower fan is running.

15. Verify air is being delivered to zone 1 and not to any of the other

zones.

16. At zone 1, verify air is coming out of the register/diffuser.

17. At next zone:

a. Verify air is not coming out of the register/diffuser.
b. At thermostat:

b-1 Set power switch on.
b-2 Set to Cool mode.
b-3 Set Fan switch to Auto mode.
b-4 Set cool setpoint several degrees below room temperature.

c. Verify air is now coming out of the register/diffuser.

18. At previous zone, turn thermostat off and verify that air stops

coming out of the diffuser.

19. Repeat steps 17 and 18 for the remaining 2 zones.

Test Complete.

STARTUP TEST, GAS/ELECTRIC MODE DIGI3U

(Verify Jumper JP2 is in the G/E mode on the Controller)

2. Make a Heat call from STAT 1 only.

3. Verify DPR1 LED is off and DPR2 & DPR3 LEDs are illuminated.

4. Check dampers for proper open and close position.

5. Verify controller energizes the compressor and indoor fan.

Y and G LEDs are illuminated for “O” mode.
Y, G and O/B LEDs are illuminated for “B” mode.

6. Verify after 4 minutes of run time, Y, G, and W2 LEDs are illuminated

and the auxiliary heat is energized on the controller.

7. Repeat this process for zones 2 and 3.

8. Make a Cool call on STAT1.

9. Verify DPR1 LED is off and DPR2 & DPR3 LEDs are illuminated.

10. Check dampers for proper open and close position.

11. Verify controller energizes the compressor, rev valve (“O” mode)

and indoor fan.
Y, G and O/B LEDs are illuminated for “O” mode.
Y and G LEDs are illuminated for “B” mode.

12. Repeat this process for zones 2 and 3.

STARTUP TEST, HEAT PUMP MODE DIGI3U

(Verify jumper JP2 is in the HP position on the controller and the LAT sensor is connected to the S S terminals.)

1. Temporarily remove the LAT from the supply air stream.

13. Re-install the LAT into the supply air stream.

Summary of Contents for DIGI3U

Page 1: ...DIGI3U Three Zone Universal Controller for Gas Electric or Heat Pump Applications Installation Guide Part D3MAN Zoning Systems That s all we do 3 Zone Controller for the RNC Market October 2011...

Page 2: ...the controller The resistor is used in place of the LAT for 2 zone Gas Electric installations that do not have a bypass When bypass is used the optional LAT leaving air sensor must be connected in pla...

Page 3: ...s LAT capacity control is not applied a field supplied freeze protection and high limit device must be installed to protect equipment This should only be applied to designs in which both zones are app...

Page 4: ...2 W WIRING GAS ELECTRIC DIGI3U S S terminals for LAT capacity control If not applied leave 1k ohm resistor in place and field supplied high and low limits should be added Transformer damper transforme...

Page 5: ...ition for unit energizing reversing valve for cool place in B position for unit energizing reversing valve in heat JP2 Heat Pump or Gas Electric jumper is used to configure controller Factory set for...

Page 6: ...12va per damper TR SERIES DAMPER M M 1 2 3 3 TR1 TR2 2 1 DIGI3U SYSTEM CONTROLLER ONE TO THREE TR SERIES DAMPERS Fused 24V 40VA Transformer Transformer and 2 amp fuse TR SERIES DAMPER M M 1 2 3 3 TR1...

Page 7: ...puts to furnace and dampers After all calls are satisfied controller will initiate a 3 minute purge During this time controller will not allow any calls for heat or cool Cool Operation without LAT If...

Page 8: ...n place to function in this mode Changeover Gas Electric While controller is operating in heat or cool if another thermostat places a call for the opposite mode a changeover sequence will begin The co...

Page 9: ...ter all calls for cooling are satisfied Y G and all damper LEDs will go off and controller will initiate a 3 minute purge During this time controller will not allow a call for heat or cool Heat Mode w...

Page 10: ...energized PWR Power LED orange On when DTHP4A is powered Flashing during capacity control cutout DPR Damper status LED red One per damper On when damper is closed Emergency Heat Operation To put the...

Page 11: ...control of the unit based upon thermostat input Occasionally software upgrades may become available If so the DIGI3U software can be field upgraded by changing this microcontroller F HVAC System Statu...

Page 12: ...on supports a synchronous 24V AC 60Hz 12VA motor and termi nal board The motor is designed for continuous full stall operation Special winding and heavy duty gearing provide for long motor life and ea...

Page 13: ...or to bypass more than 2000 CFM use the electronic bypass RECTANGULAR ROUND BAROMETRIC BYPASS BYPASS DAMPERS BAROMETRIC AIRFLOW 1 2 4 3 1 Damper Shaft 2 Lock Nut 3 Lever Arm 4 Counter Weight BAROMETR...

Page 14: ...Damper incorrectly wired Correct damper wiring Emergency Heat does not Work STAT 1 must make heat call in Emergency Heat Verify heat call STAT 2 and STAT 3 can make Emergency heat call after STAT 1 V...

Page 15: ...on and blower fan is running 15 Verify air is being delivered to zone 1 and not to any of the other zones 16 At zone 1 verify air is coming out of the register diffuser 17 At next zone a Verify air is...

Page 16: ...9963 Fax 714 898 6802 Visit our Web Site http www zonexsystems com PATENTED PRODUCT Zonex Systems reserves the right to discontinue or change at any time specifications or designs without notice and w...

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