Reznor ZQYRA Unit Installation Manual - Manual (Page 53)

Form I-ZQYRA P/N 260414R5, Page 53
LED Lights (4 above) Description Troubleshooting
Quick green-off-green Communication with controller is established and working. -
Slow red-off-red Communication is not established and no data is passing to card. 1. Confirm card is firmly plugged in.
2. Confirm BMS Protocol is set to BACnet MSTP
The MSTP status LED lights are located on the bottom side of the communication
card below the controller status LED. The MSTP LED indicates the status of communi-
cation between the card and the network. Wait at least one minute after setting the
communication parameters and plugging in the communication cable before determin-
ing the status of the network communication.
LED Lights (3 above) Description Troubleshooting
Green with
occasional red
Communication with network is established
and working.
-
Green and red both
on
Communication is not established and no
data is passing to the card.
1. Confirm system and card baudrate are the same.
2. Confirm card Max Master is equal to or greater than the Station (MAC)
Address of the Master with the highest address.
The push button on the communication card is used to return the card to factory con-
figuration. Read and follow the procedure below to reset the card.
1. With controller OFF, depress and hold the push button located on the BACnet
board while powering the controller back ON.
Continue to hold the button, while watching the Status LEDs. Wait at least 20
seconds; the Status LED will flash SLOWLY 3 times, red-off.
2. Once the flashing begins, release the push button. After the 3 red flashes, the
LED comes on green. The LED then confirms recognition of the button by flashing
QUICKLY 3 times red-off, and then comes on green again.
3. Wait for about one minute for the factory parameters to be loaded.
Insert all three jumpers on the unit at the start of network and the unit at the
end of the network. DO NOT insert the jumpers on the intermediate units.
The jumpers are used to create builtin end-of-line resistance for a BACnet ®
MSTP network.
•
Jumper P1 adds a 510 ohm polarization resistance between the negative
data line (-) and GND;
•
Jumper P2 adds a 120 ohm terminal resistance between the two data
lines (+) and (-);
•
Jumper P3 adds a 510 ohm polarization resistance between the positive
data line (+) and the +5 Vdc internal voltage.
BACnet ® MSTP Points List
Name Description
Read/
Write
BACnet ® MSTP
Limits
Default
Setpoints Address Units
Analog Values
DpCngOvrLt Wheel Dewpoint Changeover Limit R/W AV1 55 - 65°F 59
DatSpHiDp Discharge Air Temperature Setpoint with High Dewpoint R/W AV2 55 - 65°F 58
Note: Points used only when control set to Dewpoint (See TempCntrl = 0)
DatSpLoDp Discharge Air Temperature Setpoint with Low Dewpoint R/W AV3 55 - 75°F 70
ActDatSp Active DA setpoint R AV4 - -
Note: Points used only when control set to Dewpoint with OA Changeover or Space Changeover Setpoint (See TempCntrl = 1 or 3)
DatHtgLoDp Discharge Air Temperature Heating Setpoint with Low Dewpoint R/W AV5 55 - 75°F 70
DatClgLoDp Discharge Air Temperature Cooling Setpoint with Low Dewpoint R/W AV6 55 - 75°F 60
Note: Points used only when control set to Dewpoint with OA Reset (See TempCntrl = 2)
OaLoSpLoDp Outside Air Temperature Low Setpoint with Low Dewpoint R/W AV7 55 - 80°F 65
OaHiSpLoDp Outside Air Temperature High Setpoint with Low Dewpoint R/W AV8 55 - 80°F 70
DaLoSpLoDp Discharge Air Temperature Low Setpoint with Low Dewpoint R/W AV9 55 - 75°F 58
DaHiSpLoDp Discharge Air Temperature High Setpoint with Low Dewpoint R/W AV10 55 - 75°F 70
Note: Points used only when control set to Dewpoint with Space Changeover Setpoint (See TempCntrl = 3)
Zone Zone temperature (AI_1) R AV11 - -
ZnCngOv Heating/Cooling Zone Temperature Changeover Setpoint R/W AV12 55 - 80°F
ZnCngOvDb Heating/Cooling Zone Temperature Changeover Deadband Setpoint R/W AV13 - -
Note: Points used only when control set to Dewpoint with OA Changeover Setpoint (See TempCntrl = 1)
OaCngOvr Heating/Cooling OA Temperature Changeover Setpoint R/W AV14 55 - 80°F 65
OaCngOvrDb Heating/Cooling OA Temperature Changeover Deadband Setpoint R/W AV15
Oat Outside air temperature (AI_3) R AV16 - -
ErDat Energy Recovery DAT (AI_4) R AV17 - -