tekmar 040 RDM - Manual

1 of 4 © 2007 D 040 - 05/07
- Data Brochure
Remote Display Module (RDM) 040
D 040
05/07
The base of the RDM should be securely installed in
the desired location. Mount the RDM directly to the
desired location using two #6-1” screws. The screws
are inserted through the mounting holes and must be
securely fastened to the desired location. If possible,
at least one of the screws should enter a wall stud or
similar surface. If the RDM is to be mounted to a 2” x
4” electrical box, order an Adaptor Plate 007. This plate
mounts to the electrical box and the RDM will then
mount to the plate.
Installation
The tekmar Remote Display Module (RDM) 040 provides the user with a remote interface to
any tekmar control that is tekmar Net
TM (tN2) capable. The RDM can be used to view and / or
adjust the settings on the control that it is connected to, or on any Room Temperature Unit
(RTU) that may be connected to the control. The RDM can display any of the system and
status indicators visible on the control or RTU. It also has a built in alarm contact that can be
used to trigger an external alarm if either a control or sensor error occurs.
STEP ONE
REMOVING THE FRONT COVER
Place a screwdriver or similar object into the small slot located in the top of the RDM. Push
the screwdriver against the plastic tab, and pull the top of the front cover so that it pivots
around the bottom edge of the RDM.
STEP TWO
MOUNTING THE RDM
1 2 3 4
Com tN 2 Warn in g
STEP THREE
WIRING THE RDM
#6 1” screws
To Control
Run 18 AWG twisted pair or similar wire between the RDM and
the control. Insert the wires through the hole provided in the
back of the RDM enclosure and connect them to the Com and
the tekmar Net
TM (TN2) terminals. Do not run the wires parallel to
telephone or power lines as this may interfere with the operation
of the RDM. If the RDM wires are located in an area with strong
sources of electromagnetic noise, shielded cable should be used
or the wires can be run in a grounded metal conduit.
NOTE: Do not apply power to the RDM. The RDM is to be wired directly to the control. The
connection between the control and the RDM is polarity sensitive. The Com terminal of
the RDM must be connected to the Com terminal of the control and the tekmarNet
TM (tN2)
terminal of the RDM must be connected to the appropriate terminal of the control. If the
wires are reversed, the display on the RDM will remain blank and the control will display a
short circuit error for the tekmarNet
TM (tN2) device.