WarmlyYours PD Pro Snow Switch - Manual (Page 6)

Snow Switch ® Model PD Pro
Instruction Manual
23735 Rev. B 06/14 (800) 234-4239 http: www.networketi.com Environmental Technology, Inc. 6 of 30
• Durable IP66, NEMA 4X enclosure
• UL Listed to UL 873 Temperature-Indicating and -Regulating Equipment
SELECTING THE PROPER SENSOR
The Snow Switch model PD Pro snow and ice control is designed for use with up to two
compatible sensors. Compatible sensors include the CIT–1, GIT–1, and SIT–6E snow and ice
melting sensors. These sensors have provided the industry’s most versatile and cost effective
snow melting control when used with Environmental Technology control panels. Sensors should
be selected to best suit the intended application.
The CIT–1, GIT–1, and SIT–6E snow and ice melting sensors combine to reliably detect snow and
ice in gutter and pavement applications. The CIT–1 sensor may be paired with either the GIT–1
sensor for gutter applications or the SIT–6E sensor for pavement applications. These sensors
detect precipitation as snow at temperatures below 38°F (3.3°C). Control panels are signaled
only if moisture occurs below this temperature, saving energy and ensuring reliable melting.
Table 1 below presents the recommended sensor combinations for use with the PD Pro snow
and ice control.
One or two CIT–1 Sensors
One GIT–1 Sensor
One GIT–1 and one CIT–1 Sensor
One SIT–6E Sensor and one CIT–1 Sensor
Table 1. RECOMMENDED SENSOR COMBINATIONS.
For more complete information regarding the sensors and their individual capabilities, refer to the
Products link on the Environmental Technology website, http://www.networketi.com.
AVAILABLE OPTIONAL COMPONENTS
Prior to installation and set-up, it is first useful to discuss two important optional components
available for the Snow Switch PD Pro system. The first of these optional components is a
Remote Control Unit, RCU–3 (Part Number 21357), which allows remote operation of the system
away from the control box. The second optional component is a Temperature Sensor Assembly
(Part Number 19272) which regulates the heating cycle to make it more efficient. Neither of
these optional components comes with the basic system so either or both of them must be
ordered separately and installed along with the system, not only to facilitate their installation but
also to optimize their performance.