iAIRE, LLC
iAIRE
OM manual
132
SPC RH/T Transmitter with Setpoint Control
Installation Manual
June 4, 2013
1
Introduction
The RH/T transmitter incorporates two sensors in one attractive
wall mount enclosure for the most efficient environmental
monitoring and control system. It uses a field-proven RH sensor
to monitor relative humidity and a curve-matched thermistor to
measure temperature. Two setpoint controls are also available for
temperature and RH adjustment. The device may also include an
occupancy override button and an external communication jack.
Both measurements and setpoint signals are available on separate
outputs as linear 4-20 mA, 0-5 or 0-10 Vdc signals.
Several configurations of the device are available with one to four outputs as required. An LCD is included for configuration
and local indication of all parameters. Several operating parameters can be programmed using a keypad for specific
applications including four temperature ranges and C/F display.
Before Installation
Read these instructions carefully before installing and commissioning the device. Failure to follow these instructions may
result in product damage. Do not use in an explosive or hazardous environment, with combustible or flammable gases, as a
safety or emergency stop device or in any other application where failure of the product could result in personal injury. Take
electrostatic discharge precautions during installation and do not exceed the device ratings.
Mounting
The room type sensor installs directly on a standard electrical box and should be mounted about five feet from the floor of the
area to be controlled. Do not mount the sensor near doors, opening windows, supply air diffusers or other known air
disturbances.
The cover is hooked to the base at the top edge and must be removed from the bottom edge first. Use a small screwdriver to
carefully pry each bottom corner if necessary. If a security screw is installed on the bottom edge, then it may have to be
loosened or removed also. Tip the cover away from the base and sit it aside.
The pcb must be removed from the base to access the mounting holes. Follow usual anti-static procedures when handling the
pcb and be careful not to touch or bend the sensors. The pcb is removed by pressing the tab on the enclosure base to unsnap
the latch near the bottom edge, then the pcb can be lifted out of the base. Sit the pcb aside until the base is mounted on the
wall.
After the base is screwed to an electrical box or the wall using the appropriate holes, pull the wires through the wiring hole in
the center of the pcb and then gently reinstall it in the enclosure base. Ensure the pcb is snapped into the base securely and
correctly. The mounting hole locations are shown in the following drawing.
Summary of Contents for ultraDRY
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