Automation Components ACI/TTU1000 - Manual (Page 7)

2305 Pleasant View Rd. Middleton Industrial Park Middleton, WI 53562
PH: (608) 831-2585 FAX: (608) 831-7407
II-22
n ROOM TEMPERATURE TRANSMITTERS
This unit is suitable for either drywall or junction box mounting. First, remove the cover of the housing and mount
the base of the Room unit to the wall, using the (2) 6/32” x 1” screws that are provided. Once the base is mounted to
the wall, make all of the proper connections and then place the cover back onto the unit. Now tighten the cover
down, using the (2) 1/16” Allen screws located in the bottom of the housing. The Room transmitter is provided with
a two pole terminal block for power and a two pole terminal block for the RTD, which allows for easy wiring of the
unit.
n DUCT AND DUCT AVERAGING TEMPERATURE TRANSMITTERS
Duct Temperature Sensors - Drill a 3/8” hole in the duct and insert the probe through the hole until the foam pad is
tight to the duct. Now insert (2) screws through the mounting holes in the flange and tighten until the unit is
held firmly to the duct.
Duct Averaging Sensors - Drill a 3/8” hole in the duct and insert the averaging element through the hole until the
foam pad is tight to the duct. Now insert (2) screws through the mounting holes in the flange and tighten until the
unit is held firmly to the duct. The sensor should then be strung in a criss-cross pattern throughout the duct
(see Figure #2) using the mounting clips provided, in a pattern that covers the greatest surface area of the duct, to
insure that there is no stratification. When bending the copper tubing, be careful that you use a gradual bend and that
you DO Not kink the copper tubing.
n FLUID IMMERSION TEMPERATURE TRANSMITTERS
The ACI Fluid Immersion type transmitters are provided with a 2.5", 4”, or 8” 304 series stainless steel thermowell. The
thermowell has a 1/2” external or process NPT threads and 1/2” internal or instrument NPT thread. All of the ACI
thermowells will accept a probe diameter of 0.250”.
n STRAP-ON TEMPERATURE TRANSMITTERS
The ACI Strap-On transmitters are provided in a junction box with an adjustable 2” to 5” pipe clamp. The unit
should be mounted on the bottom side of the pipe to ensure good temperature transfer. In hot water applications
(over 150 o F) it is recommended that the transmitter be remote located so as not to exceed the operating temperature
of the transmitter. Extra straps may be ordered for larger diameter pipes.
n OUTSIDE AIR TEMPERATURE TRANSMITTERS
The ACI Outside Air transmitters are provided in two parts including a weatherproof enclosure and a 2” X 4”
junction box. The sensors will be mounted in the weatherproof enclosure and mounting hardware is provided. The
transmitter will be provided in the 1 gang junction box and should be mounted on an inside wall so as not to exceed
the operating temperature limits of the transmitter. This sensor should be mounted on either the North side of the
building or anywhere out of direct sunlight with the sensor probe pointed downward. Weatherproof Aluminum Bell
Boxes and NEMA 4X Polycarbonate enclosures are available upon request.
n STAINLESS PLATE TEMPERATURE TRANSMITTERS
The ACI Stainless Plate temperature transmitters are mounted on the back of a 2” x 4” stainless plate. The sensor is
covered with a 1/8” foam insulation, which allows the sensor to sense the actual room temperature and ignore any
heat produced by the transmitter or drafts from within the wall. All mounting screws are provided.
12’ or 24’ Averaging Element
= Mounting Clips