IM 1017 / Page 1 of 3
© 2009 McQuay International
800-432-1342
www.mcquay.com
Installation
1
Install the thermostat with the two furnished mounting
screws to a standard 4-1/16" x 2-1/8" square device box
with a 2" x 4" adapter ring.
2
For wall installations, mount the thermostat on an inside
wall approximately 5 feet above the floor. The location
should provide circulation at average room temperature.
Avoid direct sunlight or sources of hot or cold air in the
room or wall.
Figure 1: Mounting
Figure 2: Typical Wiring*
Note:
* Specific models may have fewer connections.
3
Remove the cover. Mount thermostat base assembly to
the outlet box using screws provided. Tighten the screws
evenly but do not overtighten. Connect wires per wiring
diagram.
4
To use a remote sensor on units with local sensing
capability, remove jumper JP-1 to disable local sensing.
Failure to remove JP-1 will cause improper operation of
thermostat.
Installation and Maintenance Manual
IM 1017
MT 168 0-10 VDC/4-20mA Thermostat
Group:
Applied Air Systems
Part Number: 910102992
Date:
August 2009
DANGER
READ THESE INSTRUCTIONS CAREFULLY BEFORE
ATTEMPTING TO INSTALL, OPERATE OR SERVICE THIS
THERMOSTAT.
Failure to observe safety information and comply with
instructions could result in PERSONAL INJURY, DEATH
AND/ OR PROPERTY DAMAGE.
To avoid electrical shock or damage to equipment, disconnect
power before installing or servicing. Use only wiring with
insulation rated for full thermostat operating voltage. Use
copper wire only. Insulate or wire-nut all un-used leads. Any
wiring, including the remote probe, may carry the full operating
voltage of the thermostat.
To avoid potential fire and/ or explosion do not use in
potentially flammable or explosive atmospheres.
Retain these instructions for future reference. You must review
your application and national and local codes to ensure that
your installation will be functional and safe.
CAUTION
Care should be used to avoid electrostatic discharge to the
microprocessor.
This unit has configuration dip switches and jumpers. You may
need to reconfigure the thermostat for your application.
LO
W
V
O
LT
A
G
E
CO
NNE
C
TI
O
N
S
LI
N
E
V
OL
TA
G
E
CO
NNE
C
TI
O
N
S
FAN
L2 OR NEUTRAL
OPTIONAL REMOTE PROBE
OPTIONAL PIPE SENSOR
L1 (HOT)
LO FAN
MED FAN
HIGH FAN
OR SINGLE SPEED
24 VAC 1
24 VAC 2
SETBACK
24 VAC
XFMR
MAIN 1
0-10 VDC
OUTPUT
SECONDARY
0-10 VDC
1 OUTPUT
FAN
OUTPUT
AUXILIARY
HEAT
OUTPUT
DAMPER
OUTPUT
10
11
12
13
14
15
16
17
1
2
3
4
5
6
7
