WarmlyYours PD Pro Snow Switch - Manual (Page 2)

Snow Switch ® Model PD Pro
Instruction Manual
23735 Rev. B 06/14 (800) 234-4239 http: www.networketi.com Environmental Technology, Inc. 2 of 30
PRODUCT TESTING RECORD
Use this page to record the results of the testing procedures in this manual. Specifically, these
are a mega-ohm test following installation of the heat tape, a post-installation test of the control
box, and a post-installation test of the system sensor(s). This record will be a useful resource
throughout the life of the product.
MEGA-OHM TESTING (Page 10)
(Follow heat tape manufacturer’s recommendations or, if not available,
use a 500 VDC mega-ohm meter on the heat tape.)
TEST
DATE
AMBIENT
TEMPERATURE
READING
(Target: 20 MΩ or greater;
Check heat tape manufacturer’s documentation.)
POST-INSTALLATION CONTROL TESTING (Page 15)
(Use a voltmeter or clamp-on amp meter on either yellow control lead.)
TEST
DATE
AMBIENT
TEMPERATURE
SUPPLY VOLTAGE (Volts)
If heat tape is disconnected.
(Use voltmeter.)
(Target: faceplate voltage)
SYSTEM CURRENT (Amps)
If heat tape is not disconnected.
(Use amp meter.)
(Target: should be based on heat
tape used,
consult heat tape supplier;
reading must be less than
faceplate amps and
system breaker sizing)
POST-INSTALLATION SENSOR TESTING (Page 16)
(Use a voltmeter on the leads indicated.)
TEST
DATE
AMBIENT
TEMPERATURE
Sensor Supply Voltage Sensor Control Voltage
Red to Black White to Black
(Target: 23 – 28 VDC)
Warm & Dry
(Target:
22 – 28 VDC)
Cold & Wet
(Target: less than
2 VDC)