High Altitude Derate; Download Mobile Service App; Electrical Connections - Lennox LGT036 Installation Instructions Manual

High Altitude Derate

Locate the high altitude conversion sticker in the unit
literature bag. Fill out the conversion sticker and affix next
to the unit nameplate. High altitude kits are available for
field-installation.
Refer to table 2 for high altitude adjustments.
TABLE 2
HIGH ALTITUDE DERATE
Altitude Ft.*
2000-4500
4500 And Above Derate 2% / 1000 Ft. Above Sea Level
*Units installed at 0-2000 feet do not need to be modified.
NOTE ‐ This is the only permissible derate for these units.
High Altitude Derate - ULNOx Units
The Ultra-Low NOx units are approved for installations
from 0 -4500 ft. No modifications are required. Above 2000
ft, the furnace will naturally de-rate approximately 10%.

Download Mobile Service App

A-Mobile Device Requirements
S Android hardware requires 2GB RAM and a 2Ghz
core processor. Tablets are supported.
S Minimum Android 6.0 (Marshmallow) or higher.
Recommend Android 10 and Apple products require
iOS version 11 or higher.
B-New Installations
Once the app is downloaded, refer to the Setup Guide
provided with this unit to pair the app to the unit control
system. Follow the setup wizard prompts to configure the
unit. See figure 14 for the app menu overview. If a mobile
device is unavailable or not pairing, refer to the Unit
Controller Setup Guide for start-up instructions.
Electrical Connections - Power Supply
Do not apply power or close disconnect switch until
installation is complete. Refer to start-up directions.
Refer closely to unit wiring diagram.
Refer to unit nameplate for minimum circuit ampacity
and maximum fuse size.
Gas Manifold Pressure
See Unit Nameplate
1- Units are factory-wired for 230 / 460 / 575 volt supply.
For 208V supply, remove the insulated terminal cover
from the 208V terminal on the control transformer.
Move the wire from the transformer 240V terminal to
the 208V terminal. Place the insulated terminal cover
on the unused 240V terminal.
2- Route power through the bottom power entry area
and connect to L1, L2, and L3 on the top of K1 in
control area above compressor. Secure power
wiring with factory-installed wire ties provided in
control box. Route power to TB2 on units equipped
with electric heat. Route power to S48 or CB10 If
unit is equipped with the optional disconnect
switch or circuit breaker. See unit wiring diagram.
MOBILE SERVICE APP MENU OVERVIEW
MENU
Page 10
RTU MENU
SETUP
TEST AND BALANCE TEST AND BALANCE
SERVICE
SETTINGS
FIGURE 14
LGT/LCT036, 048, 060, 072
INSTALL
NETWORK
INTEGRATION
ALARM HISTORY
DATA TRENDING
FACTORY
RUNTIMES
SYSTEM DATA /
SENSORS / OUTPUTS
COMPONENT TEST
REPORT
ADVANCED
CONTROL
FIRMWARE UPDATE
RTU OPTION
INSTALL