Lennox V0STAT54P-2 Installation And Operation Instructions Manual

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©2017 Lennox Industries Inc.

Dallas, Texas, USA

INSTALLATION/
OPERATION
INSTRUCTIONS

CONTROLS
507596-04
04/2017

THIS MANUAL MUST BE LEFT WITH
THE OWNER FOR FUTURE REFERENCE

WARNING

Improper installation, adjustment,
alteration, 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.

Frequent changes to operating mode
may cause system malfunction.
Allow at least one minute between
mode changes to allow the system to
stabilize.

IMPORTANT!

!

V0STAT54P-2 Indoor Unit
Non-programmable Controller

Electrostatic discharge can affect elec­tronic components. Take precautions
to neutralize electrostatic charge by
touching your hand and tools to metal
prior to handling the control.

IMPORTANT!

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Shipping and Packing List

Package 1 of 1 contains;

1 – Wired Controller
1 – Installation and operation manual
2 – Plastic spacers

General

The V0STAT54P-2 is a wired non-program­mable local controller that controls up to 16
VRF indoor units. These instructions are
intended as a general guide and do not su­persede local codes in any way. Consult au­thorities having jurisdiction before installation.

Requirements

• Four-conductor cable is required for in­stallation.

• Be sure that power supply has been
turned off before beginning installation.

• This controller should be used only as de­scribed in this manual.

• Do not install the controller on outside
walls (where there is unconditioned space
on opposite side of wall) or in locations
where direct sunlight may be present.

Installation

Clean controller using a clean, damp
cloth. Do not spray cleanser on or
around controller.

Do not install controller in areas
where harmful gases containing
sulfur or other damaging agents
may exist or the controller may be
damaged.

CAUTION

!

CAUTION

!

Power wiring between controller and fi rst
indoor unit:

• Minimum 18 AWG stranded shielded
cable up to 164 feet (50 m).

• Ensure there are no gaps between the
controller back cover and the mounting
surface.

• Fill any holes in the wall behind the
controller to avoid false readings from
infi ltration.

• Ground the shielded control wiring.

• Do not use a megger to test insulation.

Communication wiring between indoor
units:

• Minimum 18 AWG stranded shielded
cable.

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Do not operate controller with wet
hands.

CAUTION

!

Read all of the information in this manual
before using this controller. All wiring must
conform to local and national building and
electrical codes and ordinances. This is

a 12 VDC controller. Do not install on
voltages higher than 12 VDC.

• This manual provides the installation
instructions for this controller. Refer to the
included wiring diagrams to connect the
controller to the indoor unit.

• The controller uses low voltage. Keep a
minimum distance of 12” (305 mm) be­tween low voltage control wire and high
voltage power wires.

IMPORTANT!

Figure 1. Remove Controller from Back Cover

1. Remove the controller from the back cover using a fl at head screw driver as shown. See
fi gure 1.

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Figure 2. Installation

4. At the controller, wire the fi eld-provided 4-conductor shielded cable to X / Y / GND / 12V
terminal of the controller. See fi gure 3.

2. Adjust the length of the two plastic spacers as needed to allow the controller to be mounted

fl ush with the wall. NOTE – Be sure to provide for future maintenance by allowing enough
slack in the wiring to allow the controller to be removed from the wall if needed. See fi gure 2.

3. Attach the back cover using fi eld-provided screws.

Figure 3. Connection at Controller

4-conductor wiring

X 12VY GND

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Figure 4. Wire to One Indoor Unit

5. Reattach the controller to the back cover.

6. Connect the controller to one or more indoor units, up to 16. Use 4-conductor shielded cable
to connect to the fi rst indoor unit. NOTE - Wiring is polarity sensitive. See fi gure 4.

COM 12VX Y

12V X Y E

NOTE - Connect up to 16 indoor units
NOTE - Ground cable shielding at indoor unit

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Specifi cations

Input voltage 12 VDC
Ambient temperature 23~110°F (-5~43°C)
Ambient humidity RH40%~RH90%

Table 1. Specifi cations

Figure 5. Wire Multiple Indoor Units

COM 12VX Y

12V X Y E 12V X Y E 12V X Y E

NOTE - Connect up to 16 indoor units
NOTE - Ground cable shielding at one end of each length of cable

7. Daisy chain 3-conductor control wiring to each additional indoor unit using the X Y E termi­nals in the electrical control box of the indoor unit. Do not daisy chain 12V power cable. See
fi gure 5. NOTE - Wiring is polarity sensitive.