Downflo Oval, DFO 2-8 to 4-128
34
Cold Climate Kit, Detail C
Cold Climate Kit
Electrical installation, service,
or maintenance work must
be performed by a qualified electrician and
comply with all applicable national and local
codes.
Turn power off and lock out all power before
performing service or maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.
A cold climate kit provides heat to the pulse valves to
prevent cold weather freeze up. The basic kit, for use in
applications that have a moderate amount of moisture
in the compressed-air supply, consists of a small
heating element and thermostat installed in the solenoid
enclosure. The basic kit is factory-installed and supplied
with the appropriate solenoid wiring instructions.
A heavy-duty kit is available for applications that
have moderate-to-high amounts of moisture in the
compressed-air supply and consists of the basic kit plus
a heat cable to deliver heat to the large pulse valves.
This kit is customer-installed and detailed installation
instructions are provided.
1. Install the power connection kit on the heat cable
following the manufacturer’s instructions.
2. Start with the upper right-hand valve, wrap heat
cable around the valve as shown in Detail A. Pull
heat cable tight.
Double wrap between round
coupling and square valve cover.
3. Position a 3-in hose clamp around the double
wrapped heat cable and tighten securely.
4. Wrap remaining valves using the same technique in
the order shown in Detail B.
5. Drill a 1-in diameter hole in the back of the junction
box. See Detail C. Assemble the power connection
kit following the manufacturer’s instructions.
6. Secure junction box to manifold using two, 8-in hose
clamps wrapped around the standoff.
7. Wrap 6-ft of pipe insulation tape around each heat-
cable wrapped valve. Wrap the entire valve, double
wrapping the hose-clamped heat cable. Secure with
cable ties.
Cold Climate Kit, Detail A
Step 2
double
wrap
Step 3
3-in hose
clamp
Cold Climate Kit, Detail B
start here
4-Valve Configuration
1
2
4
3
