Lennox F1943L-3P Installation Instructions Manual

©2022 Lennox Industries Inc. Dallas, Texas, USA
!
Improper installation,
service or maintenance can cause property
damage, personal injury or loss of life.
Installation and service must be performed by a
licensed professional HVAC installer (or equivalent)
or service agency.
To ensure proper system performance and reliabil-
ity, Lennox does not recommend operation of VRF
systems during any phase of construction. Con-
struction debris, low temperatures, harmful vapors,
and operation of the unit with misplaced filters can
damage the units. Failure to follow these guide-
lines will result in the warranty being voided.
IMPORTANT
Frequent changes to operating mode may cause
system malfunction. Allow at least one minute
between mode changes to allow the system to
stabilize.
This manual must be left with the owner for
future reference.
VRF
WARNING
adjustment, alteration,
CAUTION
INSTALLATION
INSTRUCTIONS
VRF Wi-Fi Controller Installation
VRF Systems - Controls
508210-02
08/2022
General
The F1943L-3P (19B16) controller is a wired touch
screen programmable local controller for VRF Heat
Recovery and Heat Pump indoor units capable of
Wi-Fi control via a mobile application. These instruc-
tions are intended as a general guide and do not su-
persede local codes in any way. Consult authorities
having jurisdiction be fore installation.
Be sure that power supply has been turned off before
beginning installation. This controller should be used
only as described in this manual.
Shipping and Packing List
Package 1 of 1 contains;
1 – Wired Controller
1 – Back plate and Wire Terminals
2 – Mounting screws and anchors
2 – Machine screws for connecting controller to
back plate
Tools Needed
#2 Phillips screwdriver
Slotted precision screwdriver
Level
1/8" wall anchor tools
Controller Placement
Avoid installing local controller in high load or heat
loss areas such as exterior walls or walls that are
against unconditioned spaces, near entry doors
and windows, or where direct sunlight may be
present.