24
18. At next thermostat:
a. Verify that air is not coming out of register.
b. At thermostat:
1. Set power switch to ON, if applicable
2. Set to Cool mode.
3. Set fan to AUTO mode.
4. Set cool set point 4° below room temperature.
c. Verify that there is
airflow
from register.
19. At previous zone, turn off thermostat and verify that
there is no
airflow
from register.
20. Repeat steps 18 and 19 for remaining zones.
Test complete.
STARTUP TEST, HEAT PUMP DT4U
21. Reinstall LAT sensor, if removed for startup.
DT4U - STARTUP
1. Disconnect Y1, Y2, O/B, W2 and G wires between controller and
airhandler. This will allow controller to cycle all stages of heat and
cool without energizing compressors, fans or heat strips.
2. Turn off all thermostats except zone 1.
3. At zone 1 thermostat:
a. Set power switch to ON, if applicable.
b. Set to Heat mode.
c. Set fan to AUTO mode.
d. Set heat setpoint 4° above room temperature.
4. At System Controller:
a. Verify Y1, G and PWR LEDs are ON. If not, cycle System Controller
power switch OFF and then ON and recheck.
b. If jumper O/B is on B, verify O/B LED is ON. Otherwise, verify
O/B LED is OFF.
c. Verify DPR 1 LED is OFF, and DPR 2 through DPR 4 LEDs are ON.
5. At next zone thermostat:
a. Set power switch to ON, if applicable.
b. Set to Heat mode.
c. Set fan switch to AUTO mode.
d. Set Heat setpoint 4° above room temperature.
6. Repeat steps 4 and 5 for all remaining zones. As a zone calls for
heat, the corresponding DPR LED for that zone will de-energize and
the damper will open. As each zone is
satisfied,
the associated
DPR LED will illuminate and the damper will close.
7. Verify a call for 2nd stage heat.
Confirm
that Y2 energizes after the
heat pump has been running for 4 minutes. Y2 will energize if LAT
(leaving air temperature) is less than Y2 cut-in temperature (LO
cutout setpoint minus 25°; if HI limit is 120°, subtract 25° and
cut-in will be 95°). After a total of 8 minutes of continuous call for
heat, verify that W2 LED has illuminated, calling for electric strip
heat. After 8 minutes of continuous heat call, if LAT is less than 90°,
then W2 will energize and auxiliary heat is on.
8. Turn off all thermostats except zone 1.
9. At zone 1 thermostat:
a. Verify power switch is ON, if applicable.
b. Set to Cool mode.
c. Set fan to AUTO mode.
d. Set cool setpoint 4° below room temperature.
10. At System Controller:
a. Verify Y1, G and Power LEDs are on. If not,
cycle System Controller power switch OFF and ON and recheck.
b. If jumper O/B is in the O position, verify that O/B LED is
ON. If O/B is in the B position, verify O/B LED is OFF.
c. Verify DPR 1 LED is OFF and DPR LEDs 2 through 4 are ON.
11. At zone 2 thermostat:
a. Set power switch to ON, if applicable.
b. Set to Cool mode.
c. Set fan switch to ON.
d. Set cool setpoint 4° below room temperature.
12. Verify Y1, G and Power LEDs are ON. O/B LED is ON for O
mode or OFF for B mode. Verify damper LEDs for DPR 1 and
2 are OFF, anddamper LEDs for 3 and 4 are ON.
13. Turn zone 1 thermostat OFF. Verify damper 1, 3 and 4 LEDs
are ON. Damper 2 LED is OFF.
14. Repeat steps 11 through 13 at zone thermostats. Verify
damper LEDs for 3 and 4 are OFF when calls from zones are
made.
15. Verify call for 2nd stage cool.
Confirm
that after the heat
pump has been running in Y1 for 8 minutes that Y2 will then
energize. As the heat pump outputs have been disconnected
for this test, the LAT. temp will be at ambient temperature,
allowing the controller to stage up. With the heat pump
outputs connected, after 8 minutes of continuous running,
the Leaving Air Temperature must be a minimum of 12° above
the LO cutout setting for Y2 to energize.
16. Turn off all thermostats.
17. Connect wires to System Controller terminals Y1, Y2, W2 and
G.
18. Place call on zone 1 for Heat. Verify heat pump startup and
airflowon
zone 1 registers.
19. Place a call on zone 2 for Heat, and verify
airflo
w. Switch off
zone thermostat 1, and verify
airflo
w.
20. Repeat for zones 3 and 4.
21. Turn off all thermostats.
22. Place a call on zone 1 for Cool. Verify cool startup and
airflow
on zone 1 registers.
23. Place a call on zone 2 for Cool, and verify
airflo
w. Switch
zone thermostat 1 to OFF, and verify
airflo
w.
24. Repeat for zones 3 and 4.
Test Complete
