Lennox LB-114470G, Руководство по установке

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Check−Out Procedure
Connect jumpers or toggle switches between the DDC out-
put terminals to simulate a thermostat demand and con-
firm proper unit operation. See figure 16. Refer to unit
installation instruction and Prodigy Control manual pro-
vided with unit.
1. Disconnect 24V power connector on DDC.
2. Use Prodigy Control manual to troubleshoot and/or
clear any errors codes from the Prodigy Control main
board readout.
3. Install a jumper wire across fan output terminals C and
NO.
4. Apply power to unit; blower will operate. Leave blower
jumper in place throughout check−out.
5. Manually activate stages of heating and cooling with
a jumper connection between terminal NO and C as
follows:
HEAT 1 First−stage heating
HEAT 2 Second−stage heating
COOL 1 First−stage cooling
COOL 2 Second−stage cooling
DAMPER Economizer
The corresponding indicating light on the A55 M2 main
control board should turn on. This indicates that the Prodi-
gy Control board is receiving a demand from the DDC. This
also indicates that wiring between the DDC output terminal
block and the Prodigy Control input terminal is correct for
each function.
IMPORTANT
Do not jumper cooling and heating outputs at the
same time.
6. Turn off power.
7. Remove all jumpers or toggle switches.
IMPORTANT − All field installed jumpers or toggle
switches should be removed after service has been
completed to ensure that unit control has been
switched back to the DDC.
8. Connect 24V power connector to DDC.
9. Restore power to unit. Check the SERVICE LED −
Flashing or steady-ON indicates replace board; OFF
indicates board OK.
10. Repeat check−out procedure if needed.
CAUTION:
REMOVE 24V
POWER
CONNECTOR
BEFORE UNIT
CHECK−OUT
JUMPER
ACROSS FAN
TERMINALS
C & NO
JUMPER
TERMINALS
C & NO TO
ACTIVAGE
STAGES − DO
NOT JUMPER
HEAT & COOL
AT SAME TIME!
COOL
2
DAMPER
(ECONOMIZER)
COOL
1
HEAT
2
HEAT
1
FAN
SERVICE LED
Figure 14. Danfoss RTC