IS-ST-PM5C
Installation
The PM-5C must be installed in a location that exposes the
moisture grid to a clear view of the sky and any precipitation.
The unit should not be mounted directly under eaves,
overhangs, or other obstructions that can block precipitation
from reaching the moisture grid.
Do not install the sensor close to the ground, or any other
location, that can cause the sensor to be buried in snow.
Mount the PM-5C outdoors, away from furnace vents, dryer
vents, and other sources of heat. The PM-5C can be mounted
to a free-standing conduit or by using the mounting holes in
each corner of the enclosure. Do not drill holes in the enclosure.
Wire the controller in accordance to the provided schematics
Setting Configuration
Before turning power on to the PM-5C sensor, it is important to
set all control modes and settings.
1. Place the control in Standby/Reset with the switch mounted
on the side before making configuration switch changes.
Remember to return it to Automatic mode when finished.
2. Set the Trigger Temperature by adjusting
the TRIG TEMP control for desired melting
conditions. Precipitation below this
temperature is assumed to be snow, above
this is rain.Control comes with the TRIG
TEMP dial set to 39°F (4°C).
Snow & Ice Sensor Control
These instructions are intended to provide specific application
information for installing the PM-5C snow and ice sensor control
with the ProMelt snow melt products.
Please refer to the full instruction manual given with the product
for further installation, Caution, and operation instruction.
The PM-5C is a multi-voltage, self contained temperature, snow
and ice sensor control. Each PM-5C can be set to operate
with either 120, 208, 240, or 277 VAC and can provide up to
60 amps of service to the load (2 circuits 30 amps each). The
integrated snow sensor is heated to allow for snow, ice, or
freezing rain to melt, allowing proper detection of environmental
conditions.
4. Determine how the sensor operates by setting the toggles
located at S1.
Snow:
The control will operate when
precipitation is detected below the
Temp Adjust setting.
Recommended ON.
Rain:
The control will operate when precipitation is detected
above the Temp Adjust setting. Required OFF.
DEL:
The control will operate with a Delay Off time. If this
function is set to Off, the control will operate with a
2 minute delay to prevent short-cycling of external
components.
Recommended ON.
LTC:
The control will operate in Low Temperature
Cutoff mode, preventing operation when Ambient
Temperatures (AT) fall below 15°F (9.5°C).
Recommended: ON (for systems with limited
heat output).
LD:
This Long Delay switch determines the time span of
the Delay Off drying cycle. Either 30-90 minutes (LD
Off) or 2-6 hours (LD On).
Recommended OFF.
5. Set the precipitation SENSITIVITY to reduce nuisance
triggering. MORE to trigger immediately upon detection.
LESS to trigger with up to 120 seconds of detection.
Recommended MORE
to begin, then adjust as needed.
Power must be cycled for switch changes to take effect.
PM-5C provides integrated air and moisture detection within a
rainproof and ice-resistant enclosure.
2 x 30 A 277V AC, 20 A 28V DC
AVERTISSEMENT: IL PEUT Y AVOIR UN CIRCUIT SECONDAIRE SOUS TENSION
CERTIFIED TO CAN/CSA STD C22.2 NO. 14
CONFORMS TO UL STD 508
100-277V AC 0.15 A 50/60 Hz
ENCLOSURE TYPE 3R
RAIN/SNOW SENSOR CONTROLLER
WARNING: THIS UNIT MAY BE SUPPLIED BY MORE THAN ONE BREAKER
CONTROL
INPUT
US
C
Intertek
3175102
CONTROL SWITCH
STANDBY/RESET
MANUAL ON
AUTOMATIC
T
S
LI ED
ACTIVATED
ENGINEERING
DANGER
DS-5C
AUTOMATED
SYSTEMS
INDICATOR
POWER
OFF
CM
Air Temperature Sensor
Wiring Access
Control Switch
Moisture Grid
Instructions for Installing PM-5C
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use
information can result in death,
serious personal injury, property damage, or damage
to the equipment.
Keep this Manual for future reference.
!
WARNING
1.
THIS UNIT SHOULD BE INSTALLED ONLY BY
QUALIFIED PERSONNEL!
2. To prevent the risk of electric shock, disconnect all
power from the control and associated equipment
before opening the front cover plate.
3. Do not drill holes through the electrical enclosure for
mounting.
Mount the control to a free-standing conduit or via
the pre-determined mounting holes.
4. Ensure front cover gasket is properly installed when
replacing cover.
DELAY OFF
TRIG TEMP
3. Set the DELAY OFF time for 30 to 90
minutes (LD Off) or 2 to 6 hours (LD On).
The Delay function will allow the snow
melt system to run for the set time frame
after moisture is no longer detected
(once snowfall has stopped). This is to
help prevent "black ice" from forming.
