GENERAL INFORMATION - Mor Electric Heating Assoc., Inc.

Pipe and Roof Deicing Heating
Cable Installation Instructions
GENERAL INFORMATION
PSR heating cable may be used to help prevent water pipes
from freezing or to help prevent the formation of ice dams on
roofs.
• PSR heating cable is suitable for use on metal and plastic
pipes (such as PVC or polybutylene) but not on flexible vinyl
tubing (such as garden hose).
• PSR heating cable is suitable for use in metallic and nonmetallic
gutters and downspouts.
• PSR heating cable is a self-regulating heating cable designed to change its heat output as the surrounding temperature
changes. As the surrounding temperature increases, the output
of the PSR cable decreases.
• PSR heating cables feature a pilot light in the plug (120V models
only) to indicate when power is applied to the cable.
• PSR cable is suitable for shingle, slate, metal, wood and flat
roofs with either plastic or metal gutters/downspouts.
5. Do not alter the length of the heating cable - cable is factory
sealed and alteration will result in risk of electrical fire or shock.
6. Post warning labels (supplied with cable) to power supply
disconnect switch, circuit breaker panel, outdoor receptacle and
any other appropriate locations, as applicable. Also post labels
along any pipe (on outside of insulation) on which the cable is
installed.
7. Do not bend cable to a diameter less than 5 times the cable
diameter.
8. Installing cable on a roof below 32° F (0°C) may damage the
shingle if it is brittle.
PRECAUTIONS
pipe freeze protection
120V
240V
Model No.
Model No.
1. Heating cables must be installed in compliance with all national,
state, provincial and local electrical codes. Check with your local
inspector for specific details.
2. These instructions must be retained and made available to the
user and transferred to future users.
3. Heating cables must not be energized in summer conditions;
ensure that all heating cables are de-energized during the
summer.
4. It is recommended that the circuit supplying the heating cable
have ground fault protection; this is mandatory by electrical code
for some applications in many regions. Consult an electrical
inspector to determine the specific ground fault requirements
for your application prior to installation. If you are unsure that
your circuit has ground fault protection, consult an electrician.
120 Volt Cable Selection chart
PSR1006
PSR1012
PSR1018
PSR1024
PSR1050
PSR1075
PSR1100
Length in Ft. (m)
6 (1.83)
12 (3.76)
18 (5.49)
24 (7.32)
50 (15.24)
75 (22.86)
100 (30.48)
Wattage @ 50°F (10°C)
30
60
90
120
250
375
500
240 Volt Cable Selection chart
PSR2006
PSR2012
PSR2018
PSR2024
PSR2050
PSR2075
PSR2100
Length in Ft. (m)
6 (1.83)
12 (3.76)
18 (5.49)
24 (7.32)
50 (15.24)
75 (22.86)
100 (30.48)
Wattage @ 50°F (10°C)
30
60
90
120
250
375
500
Planning
• Exposure to temperatures above 150°F (66°C) will shorten the
life of your cable. Before installing on hot water pipes, set the
water heater thermostat below 150°F (66°C).
• Remove any old heating tapes or insulation before installing
the new cable.
• Do not alter the length of the cable.
• Do not use thin 1/8" (3.18 mm) foil-backed foam insulation.
Selection of heating cable. Select the appropriate cable length
from one of the two charts on next page. Cable may be up to 2 feet
(60.96 cm) shorter than the pipe. Lengths assume lowest ambient
temperature is -20°F (-29°C), with a minimum of 1/2" (12.7 mm)
fiberglass insulation or equivalent. For protection to -40°F (-40°C), use
1" (25.4 mm) fiberglass insulation. Note: Allow an extra foot (30.48
cm) of heating cable for each valve.
US T. (800) 537-4732 / F. (888) 324-2440
CAN T. (800) 794-3766 / F. (800) 361-4574
14022-001 Rev. 9
www.easyheat.com
©2008 Easy Heat
2
PSR Pipe & Roof Deicing Cable Installation Instructions
Cable Length Selection Chart
Ambient Temperature -20o F (-28.89°C), with 0.5" (12.7mm) Thick Fiberglass Insulation.
Model # No. of Cables
A PSR(*)006
1 cable
Metal Pipe
Pipe Diameter
*[-20°F (-29°C) with 0.5" (12.7mm) thick fiberglass insulation]
3'
4'-6'
7'
8'-12'
13'-14'
15'-18'
19'- 25'
26'-50'
51'-75'
76'-100'
(.91m) (1.22m-1.83m) (2.13m) (2.44m-3.66m) (3.96m-4.27m) (4.57m-5.49m) (5.79m-7.62m) (7.92m-15.24m) (15.54m-22.86m) (23.16m-30.48m)
B PSR(*)012
1 cable
C PSR(*)018
1 cable
D PSR(*)024
1 cable
1.5" (38.1 mm)
A
A
A
B
E PSR(*)050
1 cable
2.0" (50.8 mm)
A
B
B
C
F PSR(*)075
1 cable
2.5" (63.5 mm)
A
B
B
C
C
G PSR(*)100
H PSR(*)100
1 cable
2 cables
Replace* with voltage code:
1 for 120V; 2 for 240V
0.5" (12.7mm)
A
1.0" (25.4 mm)
Double Cable
A
A
B
B
B
B
C
C
E
E
Pipe
Diameter
F
F
G
G
B
C
D
E
F
G
C
D
E
F
G
H
D
E
F
G
H
*[-20°F (-29°C) with 0.5" (12.7mm) thick fiberglass insulation]
3'
4'-6'
7'-12'
13'-15'
16'-18'
19'- 24'
25'
26'-50'
51'-75'
76'-100'
(0.91m) (1.22m-1.83m) (2.13m-3.66m) (3.96m-4.57m) (4.88m-5.49m) (4.57m-5.49m) (7.62m) (7.92m-15.24m) (15.54m-22.86m) (23.16m-30.48m)
0.5" (12.7 mm)
A
A
A
B
B
B
C
C
C
D
D
D
E
E
E
F
F
G
G
1.5" (38.1 mm)
B
C
D
D
E
E
F
F
H
A
2.0" (50.8 mm)
A
B
C
E
E
E
E
F
G
H
2.5" (63.5 mm)
A
B
C
E
E
E
F
F
G
H
*For -40°F (-40°C), use 1" (25.4 mm) thick fiberglass insulation.
Attaching heating cable to pipes.
Wrap Easy Heat HCA (optional Application Tape) or nylon cable
ties at 6" (15.24 cm) intervals to secure the heating cable to the
pipe.
• If the heating cable is the same length as the pipe, run
it straight along the bottom of the pipe. If two cables are
required, position them in the 4 and 8 o’clock positions.
• If the cable selected is exactly double the pipe length, apply
a single trace of cable straight along the pipe all the way to
the end, and loop back, applying cable straight along the
pipe all the way back to the starting point.
• If the cable selected is somewhat less than double the pipe
length, spiral the cable evenly along the entire length of
pipe.
Protecting the system with thermal insulation. Before
insulating, ensure that there is no damage, such as nicks or
cuts on the heating cables. Immediately cover the pipe, cables,
connections, valves and spigots with 1/2" (12.7 mm) to 1"
(25.4 mm) thick fiberglass insulation or equivalent. Do not
leave the cables exposed. Use fire-resistant materials such as
fiberglass wrap. Make sure the insulation is waterproofed (with
polyethylene or other vapor barriers) in areas where water may
come in contact with the insulation.
Heating cable control options and power connection.
For 120 Volt cables, the heating cable can simply be plugged
into a ground fault protected electrical receptacle.
For 240 Volt cables, the cable is designed to be directly connected
into an appropriate electrical outlet box supplied by ground fault
protected circuit. Since it will be necessary to remove power from
the cable from time to time, such as in summer, always connect
the cable to an appropriate double-pole electrical switch. If the
heating cable is the only load on the circuit, the branch circuit
breaker may be used to disconnect power from the cable (switch
is not necessary).
In addition, a remote thermostat similar to Easy Heat model C3RC
can be used for 120 Volt or 240 Volt cables to reduce energy
consumption and extend the life of the cable. Consult your local
Easy Heat supplier or representative for other control options.
Testing the system. Once the installation is complete, apply
power to the heating cable; wait about one hour, and then
turn on a water tap supplied by the protected pipe and test the
temperature of the water. It should feel warm almost immediately
as the water heated by the cable flows through the pipe.
Operation. Energize the cable/control upon the arrival of cold
weather in the fall and de-energize the cable in late spring.
Maintenance.
Check cable each year for any damage before energizing the
heating cable. Check any ground fault protection device for
proper operation. Check pipe insulation and replace any that may
be loose or damaged. Do not operate the cable if any damage
is found.
US T. (800) 537-4732 / F. (888) 324-2440
CAN T. (800) 794-3766 / F. (800) 361-4574
C
C
PLASTIC Pipe
1.0" (25.4 mm)
Single Cable
A
A
www.easyheat.com
PSR Pipe & Roof Deicing Cable Installation Instructions
ROOF DEICING
Selection of heating cable.
The total heating cable length for deicing is determined by
including all elements of the roof system that need protection.
Use Tables 1 and 2 to determine the total length of cable. Usually
one cable will be sufficient for both roof and gutter areas. For
larger installations, use separate cables for roof area and gutter/
downspout area.
Installation procedures
• Remove leaves, pine needles, or any combustible debris from
roof, gutters and downspouts before installing roof deicing
cable.
• Use ZH-C Roof Clips (sold separately) for attaching the
heating cable to the roof (shingle and metal roofs).
• For downspouts longer than 20 feet (6.10 m), use DSH
Downspout Hanger (sold separately) to support the heating
cable where it enters/exits a downspout.
One hanger is required for each downspout. Always loop the
cable down to the bottom of downspout and back up toward
gutter, clamping it into downspout hanger to prevent cable from
being damaged by drain/gutter edge. This also ensures that the
cable tail is secured on the roof. Cable to be linked to roof loop
(see diagrams).
Typical Shingle Roof (Single cable shown for roof and gutter)
Table 1
Determination of total cable requirements
Items
Roof Edge
Gutter
Downspout
Roof Valley
Dormer Perimeter
Cable Required
From Table 2 based on eave overhang
1' (30.48 cm) of cable/foot of gutter (if gutter is wider than 6"(15.24cm), use 2 traces)
2' (60.96 cm) of cable/foot of downspout–cable is looped down and back
6' (1.83m) of cable/valley - loop 3' (0.91m) up valley and back
1' (30.48 cm) of cable/foot of dormer perimeter
Table 2
cable length factors vs. EAVE overhang
Eave Overhang Loop Height
Length Factor
E
H
Shingle Roof (Note 1)
1.9
12"(30.48 cm) 18"(45.72 cm)
24"(60.96 cm) 30"(76.20 cm)
2.7
36"(0.91 m)
42"(1.07 m)
3.6
48"(1.22 m)
54"(1.37 m)
4.6
Cable length required = Length Factor × Roof Length (feet/m)
2.5
3.5
4.5
5.5
Notes:
1. Typical shingle roof with sawtooth pattern. (See diagram)
2. Typical metal roof with loop pattern. (See diagram)
3. For other designs, contact Easy Heat.
Typical metal roof (Separate cables shown for roof and gutter)
(60. 24"
96c
m)
24"
Roof Clip (ZH-C)
“H” loop height
overhang
“E” overhang distance from
roof edge to face of wall
Weatherproof
outlet box
(by installer)
H
Weatherproof Outlet
Box (by installer)
Drip Loop (Typ.)
Heater Cable
Roof Clips
(@24" (60.96 cm)O.C.)
Drip Loop
Heater Cable
Length Factor
Metal Roof (Note 2)
Clip gutter cable to roof
cable to provide a path for
water to get to ground
End Seal
Must not be submerged
nor allowed to be at the
bottom end of a downspout.
DSH
Hanger Clamp
End Circuit
Downspout
Installation
US T. (800) 537-4732 / F. (888) 324-2440
CAN T. (800) 794-3766 / F. (800) 361-4574
www.easyheat.com
Mid Circuit
Downspout
Installation
3
4
PSR Pipe & Roof Deicing Cable Installation Instructions
Heating cable control options and power connection.
For 120 Volt cables, the heating cable can be simply plugged
into a ground fault protected electrical receptacle, when
icing conditions are present on the roof. The (optional)
Easy Heat RS-2 Roof Sentry (120 Volt) control can be used
to automatically ensure cables are energized only when
icing conditions are present on the roof, minimizing energy
consumption and extending cable life.
For 240 Volt cables, the cable is designed to be directly
connected into an appropriate electrical connection box.
Since it will be necessary to remove power from the cable
from time to time, such as in summer, always connect the
cable to an appropriate double-pole electrical switch. If the
heating cable is the only load on the circuit, the branch
circuit breaker may be used to disconnect power from the
cable (switch is not necessary). Several automatic controls
are available from Easy Heat.
Always connect a pilot light into the circuit of 240V
cables to indicate when the cables are energized.
Testing the system. Once the installation is complete,
apply power to the heating cable; the surface of the cable
will feel warm after about 15 minutes.
Operation. If no automatic controls are installed,
energize the cable only when icing conditions are present
on the roof, and de-energize when icing conditions are no
longer present. For 120 Volt models only, the power cord
plug contains a pilot light indicating that power is being
applied to the cable. Ensure power is removed from the
cable/control in summer.
Maintenance. Check cable annually for any
damage, such as nicks or cuts possibly caused by
animals or other activity on the roof. Check any ground
fault protection devices for proper operation. Remove all
debris (leaves, twigs, pine needles, etc.) from roof, gutters
and downspouts prior to energizing the roof cable. Do not
attempt to energize the roof cable if any of these problems
are discovered.
LIMITED WARRANTY AND LIABILITY
Easy Heat warrants that if there are any defects in material or
workmanship in this product during the first twelve (12) months
after the date of its purchase, we will replace the product with
an equivalent model, not including any labor or other installation
costs.
Our obligation to replace the product as described above is
conditioned upon (a) the installation of the product conforms to
the specifications set forth in our installation instructions and (b)
the product not having been damaged by unrelated mechanical or
electrical activities.
Product replacement as described above shall be your sole and
exclusive remedy for a breach of this warranty. This limited
warranty does not cover any service costs relating to repair
or replacement.
We shall not be liable for any incidental, special or consequential
damages as a result of any breach of this warranty or otherwise,
whether or not caused by negligence. Some states do not allow
the exclusion or limitation of incidental or consequential damages,
so the above limitation or exclusion may not apply to you.
The warranty above is exclusive and makes no other warranties with
respect to description or quality of the product. No affirmation of
fact or promise made by us, by words or action, shall constitute a
warranty. If any model or sample was shown to you, the model or
sample was used merely to illustrate the general type and quality of
the goods and not to represent that the goods would necessarily be
of that type or nature. No agent, employee or representative of
ours has authority to bind us to any affirmation, representation
or warranty concerning the goods sold unless such affirmation,
representation or warranty is specifically incorporated by
written agreement.
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR PARTICULAR PURPOSE THAT MAY ARISE IN
CONNECTION WITH THE SALE OF THIS PRODUCT SHALL BE
LIMITED IN DURATION TO TWELVE (12) MONTHS FROM THE
DATE OF PURCHASE. WE DISCLAIM ALL OTHER IMPLIED
WARRANTIES, UNLESS WE ARE PROHIBITED BY LAW FROM
DOING SO, IN WHICH CASE ALL SUCH IMPLIED WARRANTIES
SHALL EXPIRE AT THE EARLIEST TIME PERMITTED BY
APPLICABLE LAW. Some states do not allow limitations on how
long an implied warranty lasts, so the above limitation may not
apply to you.
This warranty gives you specific legal rights, and you may also
have other rights which vary from state to state or province to
province.
To obtain a replacement under this warranty any inoperative product
or component must be returned, with proof of purchase, to Easy
Heat at the addresses noted herein. Buyer is responsible for all
costs incurred in removal and re-installation of product and must
pre-pay shipment to factory or point of purchase.
In CANADA
99 Union St.
Elmira, Ont. N3B 3L7
Tel. (800) 794-3766 • Fax (800) 361-4574
In USA
2 Connecticut South Drive
East Granby, CT 06026
Tel. (800) 537-4732 • Fax (800) 541-7451
US T. (800) 537-4732 / F. (888) 324-2440
CAN T. (800) 794-3766 / F. (800) 361-4574
www.easyheat.com
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