Page 9
0-10V Wiring
The Viking has 2 x 0-10 Volt outputs that can be set to perform pre-set functions that are selectable
by the installer. See the 0-10V options detailed in the installer menu shown on page 20 of this
manual.
Sensor Wiring
The Viking will accept two types of temperature sensors. The standard 2 wire sensor and the more
advanced “Smart” 4 wire sensor that
are capable of performing additional control functions.
2 Wire Sensors
The standard 2 wire sensors are suitable for room temperature monitoring
only. There are a number of types of 2 wires sensors available, an overview
is provided below. 2 wire sensors connect
to the “room sensor” and the
“common” terminal next to it on the Viking. 2 wire sensor are not polarity
dependent.
RS-1
–
It uses 2 wires to communicate the room temperature to the Viking.
The RS-1S sensor is identical to the RS-1 described above except that it is
fitted with a switch that initiates the after-hours run timer incorporated into
the Viking controller. The RS-1S sensor is supplied as standard in the box with
each Viking controller.
The RS-A (S) additionally permits a +/- 4c adjustment of room temperature
from the installer defined set point. This sensor is perfect
for permitting the room occupants to ‘trim” the room
temperature without making large adjustments.
For projects that present difficulty in running wires for
sensors, Smart Temp also offer the RS-W (non-
adjustable), & RS-WA (+/- 4c adjustable) wireless room temperature sensor. This sensor is fitted
with an afterhours run switch. The RS-W has a typical indoor range of approximately 30 meters.
Duct sensors (RS-1D) and averaging sensors (RS-2) are also available that permit additional
temperature monitoring options.
Additional functions using the 2 wire sensor
Auto Off or Vent Mode
You can switch the Viking to Ventilation Mode (or OFF) by manipulating the sensor wiring by placing
an inline switch in the sensor cable. This works whether you use the standard (RS-01) room sensor
or the adjustable (RS1-A) sensor. The Viking automatically detects the 2 wire sensor and when
absent the Viking will behave in a number of ways as set in the Viking installer menu. See the
installer menu options on page 17 for additional information on this function.
Off
–
An open circuit room sensor turns the Viking OFF.
Vent
–
An open circuit room sensor will permit the indoor
fan only to operate during occupied
“Start”
periods.
Full Vent -
An open circuit room sensor will run the indoor
fan for as long as the sensor open circuit exists
–
regardless
of current program.
