Installation and Maintenance Manual IM 1016-2
Group:
Applied Air Systems
Part Number:
910231057
Date:
July 2018
MTB 158 Microprocessor Thermostat
ON/OFF and 3-Wire Controller
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 wirenut 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 jumpers. You may need to
reconfigure this thermostat for your application.
Installation
1. Install the thermostat with the two furnished mounting
screws to a standard 4-11/16" × 2-1/8" square device
box with a 2" × 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.
3. Remove the cover. Mount thermostat base assembly
to the outlet box using the screws provided, tighten
the screws evenly but do not over tighten. Connect
wires as shown in the appropriate wiring diagram for
your thermostat style.
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 the thermostat.
5. Remove the LCD plastic protective film. Reinstall
the cover assembly. Install the cover locking screw
provided in the hole at the left side of the control
enclosure to complete the installation.
6. Checkout: After wiring and installation are complete,
energize the system and check the operation. Adjust
the thermostat as necessary to complete at least one
cycle. Be sure the thermostat and all other equipment
are functioning correctly.
