DAVIS Rain Collector User Manual

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Rain Collector Heater
Installation Manual
The Rain Collector Heater may be
used to protect the Rain Collector’s
internal components from freezing
and/or to measure the moisture
content of snowfall. When the
heater is on, it is capable of
melting snow at a rate of 1/4''
(6 mm) of liquid precipitation per
hour. It may not be able to keep up
with larger rates of snowfall.
The rain collector heater warms
only the inside of the rain collector
and the cone itself.
Please note that we have made every attempt to design and manufacture a
safe product, but Davis Instruments assumes no liability for any injury or
damage caused directly or indirectly by the installation or use of this
product.
Note: Although the nominal heater voltage is not hazardous, a short in the wall
transformer could cause hazardous voltage to appear on the heater
wires. For safety, you should always turn the heater’s power unit to the
“OFF” position before removing the rain collector’s cone. We also
recommend that you unplug the wall transformer before removing the
rain collector’s cone.
This instruction manual is designed to take you step-by-step through the
process required to install and use your rain collector heater. Please take the
time to read through this manual before beginning the process.
Components
The rain collector heater includes the following components. Please make
sure you have all listed components before continuing.
Heater Assembly — Includes heater element, thermostat, and terminal
block for power cable.
Wall Transformer with Power Unit
Insulation Blanket
50' (15 meter) Heater Cable
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Summary of Contents

Page 1 - Installation Manual

1Rain Collector HeaterInstallation ManualThe Rain Collector Heater may be used to protect the Rain Collector’s internal components from freezing and/o

Page 2 - Components

Powering the Heater10Powering the HeaterRunning the CablesRun the heater cable from the rain collector to the location at which you plan to plug in th

Page 3

Using the Rain Collector Heater116. To provide strain relief for the cable, place a cable tie around the cable just inside the hole through which this

Page 4 - Power cable hole

Product Number: #7720Davis Instruments Part Number: 7395.096Rain Collector Heater Installation ManualRev. F Manual (8/20/10)This product complies with

Page 5

Components2The Installation Hardware Kit includes:• Three Cable Ties• Two #6-32 x 3/4” Screws• Two #6-32 Hex Nuts• Two #6-32 Split Lock Washers• Two #

Page 6

Installing the Rain Collector Heater3Choosing Cable for the Rain Collector HeaterThe rain collector heater comes with a 50-foot (15 m) length of 22 g

Page 7

Installing the Rain Collector Heater4Earlier versions of the rain collector did not come with built-in holes for the rain collector heater. If your ra

Page 8 - Heater Cable

Installing the Rain Collector Heater55. Loosen the screw heads on the terminal block.You will eventually secure the heater cable wires underneath thes

Page 9 - Inserting the insulation

Installing the Rain Collector Heater66. Secure the heater assembly to the rain collector.For stand-alone rain collectors (#7852), secure the heater as

Page 10 - Powering the Heater

Installing the Rain Collector Heater7For Vantage Pro2 rain collectors, secure the heater assembly to the rain collector base using two #4 x 3/8 self-t

Page 11 - Providing strain relief

Installing the Rain Collector Heater810.Bend each bare wire into a U-shape and secure each one under a screw head on the terminal block as shown below

Page 12 - Location of thermostat

Installing the Rain Collector Heater911.Secure the cable to the heater assembly by running a cable tie over the cable and through the hole as shown. Y

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