Document Part # 026-4824 Rev 0 5/8/2007
Page 2 of 2
©2007 Emerson Climate Technologies Retail Solutions, Inc. This document may be photocopied for personal use.
Visit our website at http://www.emersonretailsolutions.com/ for the latest technical documentation and updates.
Installation Instructions: Wall-Mount Dewpoint Probe
technical bulletin
Power and Input Wiring
To wire the Dewpoint Probe to a MultiFlex or 16AI input point, use Belden #8771 three-conduc-
tor shielded 22AWG wire (or equivalent).
Figure 5
shows the connection point on the Dewpoint
Probe’s circuit board and where to connect the wires to the probe as well as the input point. The
sensor is powered by one of the +12VDC power supply terminals on the MultiFlex or 16AI input
boards.
Terminal 1 of the Dewpoint Probe must be connected to a solid earth ground. Also, the input type
dip switch on the MultiFlex or 16AI input board must be set to the DOWN position. Input type
dip switches for points #1 through #8 are located on switch bank S1, while points #9 through #16
are located on switch bank S2.
E2 Input Setup
NOTE: Do
NOT
set up this probe with a sensor type of
“Dewpoint”; this setting only works for old-style CPC
Dewpoint Probes (P/N 203-1902). This probe must be set
up with a sensor type of “Linear.”
1. Log into the E2 and press
I
(Input Sum-
mary).
2. Highlight the input point the Dewpoint Probe is con-
nected to, and press
A
(Setup).
3. When prompted to select the data type, press
(Analog).
4. In the Analog Input setup screen, enter the following
information in the fields listed below:
•
Name
: A description of the sensor’s function
and/or location (e.g. INDOOR DEWPT).
•
Sensor Type
: Linear
•
Eng. Unit
: DF
•
Low Eng Units
: 0.0
•
High Eng Units
: 100
5. Press
J
to save changes and exit the Analog Input setup screen.
Figure 5 - Dewpoint Probe Wiring
1 2 3 4 5
CIRCUIT BOARD, FRONT VIEW
(COVER REMOVED)
CABLE
(BELDEN #8771)
RUN CABLE
THROUGH
WALL OR
CONDUIT
AND FEED
END THROUGH
HOLE IN
MOUNTING PLATE
1 2 3 4 5
1 2 3 4 5
SH
IELD
(G
N
D
)
BLACK (SGND)
W
H
ITE (SIG
)
RED (
1
2
V
DC)
CONNECT
TERMINAL 1
TO EARTH
GROUND
CABLE
(BELDEN #8771)
