14
Product Information
IM-HC 599871 0321 RABS
Control Unit
Model
1250US
Functions of the control unit:
Data and analysis hub for all components involved in the system.
Achieves zone target temperatures by constantly monitoring and
analyzing the supply manifold water temperature, each circuit's return
water temperature, and zone air temperatures when a thermostat is used.
Controls the powerheads.
Communicates with thermostats and range extenders at 916 MHz.
Communication hub for Wi-Fi enabled and/or Internet based end devices.
Subcomponents
AK
TO
R
VL-TEM
P
TAUP
.
RS-23
2
RESET
Figure 2: Control unit
1 - Integrated power adapter
2 - Socket for long ribbon cable (31.5 inches)
3 - Male connector for supply sensor
4 - Socket for future function
5 - Male connector for WLAN module
6 - Cable clip: external output (dry contact)
7 - Socket for future function
8 - 916 MHz Transceiver
9 - Button cell (CR2032)
10 - Reset button
11 - Housing lock
12 - “OK” button
13 - “Connect” Button
14 - “Connect” LED
15 - “Status” LED
16 - Housing faceplate
Additional items included with the control unit:
Supply sensor:
– Thermistor (10 kΩ)
– Housing for thermistor
– Heat conduction pad
– Zip-tie
Long ribbon cable (31.5 inch) for connecting to the circuit hubs
Mounting hardware: 3 dry wall anchors, 3 screws, and 3 bushings
For installation instructions, see
Ä
