Chapter 3: Add Ons
ABOUT WIRING THE AIDA
The Aida interconnects with the existing HVAC system via standard wiring con-
ventions, using 24-277 V ac OR 24 V dc voltage supplied by the HVAC system itself.
NOTE: The Aida allows for three different control voltages.
Telkonet provides bare wire leads on all connectors. It is up to the installer to connect
these leads using an appropriate method described herein. Wiring conventions follow
industry standards; however, it is important to note that the relay configuration is
dynamic and can be modified at the factory or in the field. It is important to always fol-
low site-specific wire diagrams.
NTC PROBE
All Aida models have two inputs. Temp probes can be used for multiple purposes:
1. HVAC Discharge Air temp
2. HVAC Return Air temp
3. Supply Water Temp
4. AquaStat Mode (switches thermostat’s Heat/Cool)
For temperature probe if not using Telkonet provided external temperature probe, a
probe with a Beta R0 must match. Alternatively, a probe can be provided to Telkonet
for lab calibration. Required specifications:
US Sensor model USP10972 or equivalent, per the following:
l
Resistance at 25 degrees C = 10 000 ohms +/- 1%
l
Resistance/Temperature curve = "J"
l
Beta ( 0 to 50 degrees C ) = 3892 degrees K nominal
Other models may be compatible; provide model number and specifications.
CT INPUTS
All Models have 2 inputs. The CT inputs are commonly used for monitoring/alerting
on fan motors, compressors or other equipment with excessive load or for determ-
ining a failure. The CT Inputs must be used with a compatible CT and sized appro-
priately for the load they will be connected to.
Current Transformer (CT) approved models from Sentran Corp.:
Rated loads are 100, 50, 30, 20 and 10 A respectively.
Chapter 3: Add Ons 17
Aida IOM
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