De scrip tion
The Elec tronic Ther mo stat Mod ules (ETMs) are
LOGIC ONE
®
in tel li gent con trol
mod ules that can be dis trib uted through out a build ing to pro vide lo cal di rect digi tal
con trol of uni tary, pack aged, staged HVAC sys tems. The ETM- 2040 is a wall- mount
mod ule that must be mounted in the space be ing con trolled be cause the sen sor is
con nected di rectly to the mod ule. One
ad di tional
re mote tem pera ture sen sor and a
digi tal dirty fil ter switch can be wired to the ETM- 2040.
This document provides in struc tions for mount ing the ETM base plate, wir ing the
module, set ting the ad dress, in stall ing the elec tron ics, and check ing the
in stal la tion.
ETM- 2040 Speci fi ca tions
Power Re quire ments
Volt age:
24 VDC, Class 2
Cur rent:
120 mA
Op er at ing En vi ron ment
Tem pera ture:
32° to 122°F (0° to 50°C)
Hu mid ity:
0 to 95% Rela tive, non con dens ing
Physi cal Di men sions
Height:
4.875 inches
Width:
7.093 inches
Depth:
1.75 inches
Weight:
1 lb
Pre cau tions
Take the fol low ing pre cau tions dur ing in stal la tion:
§
Ob serve na tional and lo cal elec tri cal codes.
§
Ob serve volt age and cur rent lim its marked on the mod ule.
§
Do not ex ceed 24-VAC at 1 am pere on any load.
Mount ing the ETM- 2040
Base plate
The ETM- 2040 base plate should be mounted hori zon tally, ap proxi mately 5 feet
above the floor, in an area that is free from drafts and sud den changes in
tem pera ture. The base plate may be mounted to an elec tri cal junc tion box or
di rectly to a wall or panel.
The baseplate is shipped with a hardware kit that contains four screws, four
hollow- wall an chors, one mod ule ad dress la bel, and 15 wire nuts.
NOTE!
Use the hollow- wall an chors when mount ing to pan el ing
or dry wall. When mount ing to a ce ment block or brick
wall, use a 3/8-inch to ½-inch layer of in su la tion be tween
the wall and the base plate.
DOC. #560075000 2/12/01
1
ETM-2040 Installation Instructions