Quick Start Guide (Back Cover) - Lennox LGH 036 Installation Instructions Manual

Quick Start Guide
Check rooftop unit electrical power for proper voltage and phasing. Check gas train components.
1. Turn on unit, correct alarm issues as necessary.
2. Follow GUIDED SETUP menu to properly configure unit (see Page 9).
3. Be sure unit is in normal operating mode as seen in display (COOLING, HEATING, IDLE, etc).
4. Conduct unit startup to verify operation under SERVICE-> TEST menu (see Page 12).
5. Insert USB memory stick into display cover to verify service and collect unit information.
Control Mode Menu Setup Needed
THERMOSTAT (Factory set for 2 stage thermostat)
LOCAL MODE Change default backup setpoints; see
SETTINGS -> CONTROL -> LOCAL
(Page 17).
MSAV Change motor torque; see
SETTINGS -> CONTROL -> MSAV
(Page 19).
BACnet Select control mode; see
SETTINGS -> CONTROL -> BACNET
(Page 18).
LonTalk
Select control mode; see
SETTINGS-> CONTROL -> LONTALK
(Page 18).
L Connection Select control mode; see
SETTINGS -> CONTROL -> LCONN
(Page 17).
Damper
Select control mode; see
SETTINGS -> SETPOINTS -> DAMPER
(Page 16).
Reheat Select sensor type; see
SETTINGS -> CONTROL -> REHEAT
(Page 18).
For Lennox Service Support 1-800-4LENNOX. For Lennox Commercial website, go to www.lennoxcommercial.com.
CAUTION
Tips
S
Check 2 AMP fuse if wiring error.
S
Check LEDs for signals.
S
Check ground switch position.
S
Give unit time to startup, error codes 74 and 93
are expected.
S
Humidity control requires sensor or error code 76
S
Use LENNOX MSAV trained technician.
S
Final motor CFM needs to be set by Test and
Balance technician
S
Blower charts are located in unit EHB.
S
Setup information to be verified with integrator.
S
Follow wiring instructions including network
termination
S
Remember to set MAC address 0-127
S
Expert level BACnet service manual available.
S
Setup information to be verified with integrator.
S
Follow wiring instructions including network
termination
S
XIF file available. Neuron ID on sticker.
S
Expert level LonTalk service manual available.
S
Follow wiring instructions including network
termination
S
Comfort Sensors are 24 VAC polarity sensitive.
S
All network devices need to be correctly
addressed
S
Verify damper minimum positions
S
Refer to Economizer section of manual for more
detail
S
Two
HUMIDISTAT
S
Analog sensor wiring is polarity sensitive
Page 42
possible connections, SENSOR and