Power - Delta Controls RTS-424 Installation Manual

Room Temperature Sensor RTS-424 (Rev 4.2) Installation & Application Guide

Power

The RTS-424 CAN NOT be powered from the 8 VDC source provided on the I-stat port. The RTS-424
CAN NOT be powered from the same transformer used to power full wave rectified panels.
The following controllers require a separate transformer to power a RTS-424:
•
DCU-050 c/w DXC-053
•
ICP-015 Intelli-Con Turbo Panel
•
ICP-025 Intelli-Con Mini-Turbo Panel
The following controllers may use the 24 VAC out or the same transformer to power the panel as used to
power a RTS-424:
•
ICP-04x Intelli-Con Micro Panel
•
IZD-204 Digital Zone Controller
•
IZD-206 Digital Zone Controller
•
IZA-218 Analog Zone Controller
•
IZC-230 VAV/VVT Controller
•
IZU-240 Programmable Zone Controller
•
Toshiba based Application Controllers loaded with V2 firmware
The RTS-424 requires a 24 VAC or 24 VDC @ 1.5 VA power supply, typically an isolated Class II
transformer. Up to 8 RTS-424s may be connected to the same transformer, providing the transformer is
properly sized, including line losses, and polarity is observed between devices (in regards to 24~ and GND).
The transformer must ONLY be used to provide power to other RTS-424 devices. Auxiliary field devices
(i.e., 4-20 mA devices) that do not use ½ wave rectification must be powered separately.
Note: In some existing Intelli-stat installations a power booster is used; be sure to remove this device
before connecting 24 VAC / 24 VDC to the power cable.
Page 6 of 8 Document Edition 1.1