|
Below are answers to the most commonly addressed
questions about
The Protectowire Company, Inc. products and services. |
 |
1. What are the electrical
characteristics of Protectowire Linear Heat
Detector?
back
to top |
|
Answer: The electrical characteristics
of Protectowire Linear Heat Detector are
approximately as follows:
Resistance 0.2 Ohms per foot (0.656 Ohms per
Meter)
Capacitance 30pF per foot (98.43pF per
Meter)
Inductance 2.5uH per foot (8.2uH per Meter)
(Values shown reflect twisted pair) |
|
|
2. Can Protectowire Linear Heat Detector
be used on other manufacturers control
panels?
back
to top |
|
Answer: The electrical
characteristics of the Protectowire Linear
Heat Detector could pose compatibility
issues when employed on panels manufactured
by others. The system designer must confirm
Protectowire Linear Heat Detector
compatibility with the panel manufacturer.
Protectowire controls specifically designed
and approved for use with Protectowire
Linear Heat Detector are recommended to
insure compatibility. |
|
|
3. What length of copper feed cable can
be run from the Protectowire FireSystem
Control Panel to the beginning of the
Protectowire Linear Heat Detection zone?
back
to top |
|
Answer: Fire Alarm Cable variation in
gauge size and resistance will effect the
overall allowable run length from panel to
zone start point. Protectowire panels are
designed to accommodate up to 100 Ohm of
feed cable. The allowable length = 100 Ohms
divided by the number of Ohms per unit
length (feet or meters) of feed cable. The
maximum allowable feed cable length is
typically reduced to 18 Ohms when the
alarm point location meter is employed. |
|
|
4. What end-of-line device is required
for a Protectowire Linear Heat Detection
zone?
back
to top
|
|
Answer: End-of-line devices are
determined by the characteristics of the
control equipment initiating device circuit.
Reference the control equipment
documentation for specific circuit
requirements. |
|
|
5. How is the location of overheat or
fire determined in a Protectowire Linear
Heat Detection zone?
back
to top |
|
Answer: All Protectowire FireSystem
Control Panels can be provided with our
unique
Alarm Point Location Meter. This feature
allows the control panels to digitally
display the linear distance (feet / meters)
to the point of overheat.
Click here to learn more about Alarm
Point Location. |
|
|
6. Can Protectowire Linear Heat Detectors
with different alarm temperature ratings be
installed on the same zone?
back
to top
|
|
Answer:
Yes, Protectowire Linear Heat Detectors
(Excluding Tri-Wire) have the same internal
construction and can be spliced directly
together on the same initiating device zone.
This allows a single Protectowire Linear
Heat Detector zone to protect multiple areas
with different ambient temperatures. |
|
|
7. Can a Protectowire Linear Heat
Detection system provide Pre-Alarm
capability?
back
to top |
|
Answer: Yes, by utilizing Tri-Wire™
(PHSC-6893-TRI) a Pre-Alarm indication is
provided at 155°F (68°C) and an Alarm
indication is provided at 200°F (93°C). Like
all Protectowire Linear Heat Detectors,
TRI-Wire™ is compatible with the
unique Protectowire Alarm Point Location
Meter. Depending upon the model control
panel the meter will display the location of
the Pre-Alarm point or the Alarm point of
the Tri-Wire™ Linear Heat
Detector. |
|
|
8. What is the maximum length of
Protectowire Linear Heat Detector that can
be placed on a single detection zone of a
Protectowire FireSystems Control Panel?
back
to top |
Answer: Zone length is dependent upon
the series of Protectowire FireSystem
Control Panel being used. Maximum lengths
are as follows:
FireSystem 2000 Series Control Panels
– 3,500 Feet (1067 Meters) maximum per zone
ACR-1600 Series Control Panels –
2,500 Feet (762 Meters) maximum per zone
FireSystem 2600HD Series Control Panels
– 5,000 Feet (1,524 Meters) maximum per zone
Srp-4x4 Series Control Panels - 3,500
Feet (1067 Meters) maximum per zone |
|
|
9. What is the maximum listed spacing for
each type of Protectowire Linear Heat
Detector in open areas?
back
to top |
Answer: The listed spacing shall be
used as a guide or starting point in
detector installation layout. Reduced
spacing is required based upon factors such
as ceiling height and construction, physical
obstructions, air movement, or the Authority
Having Jurisdiction (AHJ). The maximum
listed spacing for each type of Protectowire
Linear Heat Detector are as follows:
Factory Mutual Listed Spacing
All
temperature ratings except 356°F of Types EPC, EPN and
EPR – 30 feet (9.14 meters) on center, Type
TRI – 15 feet (4.6 meters) on center. 356°F
EPC and EPR proximity detection only.
Underwriters Laboratories Listed Spacing
All
temperature ratings EPC, EPN and
EPR – 50 feet (15.24 meters) on center, Type
TRI – Not UL Listed |
|
|
10. What is the minimum recommended
requirements for inspection and testing of
Protectowire Linear Heat Detector?
back
to top |
|
Answer: The Protectowire Company
recommends visual inspection of Protectowire
Linear Heat Detector semi-annually. Do
not heat test. The following tests
should be performed annually: Test
mechanically and electrically for function,
measure and record loop resistance and
investigate deviations from the acceptance
test. Click
here to go to our Protectowire products
page where you will find installation guides
containing information on testing
Protectowire Linear Heat Detector. |
|
|
11. Can other initiating devices such as
smoke detectors and manual pull station be
used on a Protectowire Linear Heat Detection
zone?
back
to top
|
|
Answer: Normally open, non-resistive
contact devices such as
manual pull stations and four wire smoke
detectors may be used on a Protectowire
Linear Heat Detector zone without
restrictions. Compatible two wire
smoke detectors may be used but are
subject to restrictions based upon the
specific system configuration. Consult
factory or email us at
pwire@protectowire.com for more
information. |
|
|
12. Can Protectowire Linear Heat Detector
be used in hazardous locations?
back
to top
|
|
Answer: Yes, when connected to a
properly configured and FM Approved
Protectowire FireSystems control panel.
Consult the documentation associated with
each control panel in our
products area for further information. |
|
|
13. Is Protectowire Linear Heat Detector
operation affected by Electromagnetic
Interference (EMI) or Radio Frequency
Interference (RFI)?
back
to top
|
|
Answer: The operation of Protectowire
Linear Heat Detector is not affected by EMI/RFI.
However, initiating device field wiring can
act as pathway for the transmission of EMI/RFI
to associated control equipment.
Protectowire FireSystems Control Panels have
been designed to tolerate most occurrences
of EMI/RFI. Environments subject to extreme
sources of EMI/RFI may require the use of
commercially available filtering devices. |
|
|
14. What mounting hardware and
installation accessories must be used when
installing Protectowire Linear Heat
Detector?
back
to top
|
Answer: The Protectowire Company has
researched and selected a complete
assortment of mounting hardware and
installation
accessories suitable for a variety of
applications and environments. Protectowire
approved fasteners are generally designed to
lightly clamp the detector, which enables a
tension to be applied progressively. This
method is better than arrangements that
apply a high tensile load to the detector,
or clamp and compress the detector so
tightly that it becomes damaged.
To ensure a trouble
free installation, only Protectowire
supplied or approved mounting hardware and
accessories should be used. The use of
non-approved mounting hardware and
accessories may physically damage the
detector thereby causing “false alarms” and
in some cases void the detector’s warranty. |
|
|
15. What is the ambient temperature range
of Protectowire Linear Heat Detector?
back
to top
|
|
Answer: Protectowire Linear Heat
Detector is available in
models which are suitable for
installation in ambient temperatures ranging
from -40°F (-40°C) to 250°F (121°C). Refer
to the Protectowire Linear Heat Detector
data sheet DS-6592 for appropriate
temperature and model selection. Click
here for the Protectowire Linear Heat
Detector page. |
|
|
16. What is the standard warranty period
for Protectowire Company, Inc. manufactured
products?
back
to top |
|
Answer: Material and equipment
furnished by The Protectowire Co., Inc.,
except batteries, are warranted against
inherent defects in materials or workmanship
for one year from the date of shipment from
the factory. Batteries are warranted for 90
days from the day of shipment from the
factory. |
|
|
17. Can Protectowire Linear Heat Detector
be attached to sprinkler pipes?
back
to top
|
|
Answer: Mounting Protectowire Linear
Heat Detector directly to sprinkler pipes is
common practice when the detector is the
initiating component of an extinguishing
system. In this instance Protectowire Linear
Heat Detector is considered an integral
component of the extinguishing system and
typically is allowed by most Authorities
Having Jurisdiction (AHJ). Consult the local
Authority Having Jurisdiction for
acceptability prior to installation. |
|
|
18. What standard packaged lengths of
Protectowire Linear Heat Detector are
available?
back
to top |
|
Answer: All models of Protectowire
Linear Heat Detector are available in the
following standard packaged lengths:
500 ft. (152 m) coils
3281 ft.
(1000 m) spools
|
|
|
19. Are special tools required for
working with Protectowire Linear Heat
Detector?
back
to top
|
|
Answer: Standard electrical tools are
all that is required when working with and
installing Protectowire Linear Heat
Detector. |
|
|
20. Will the entire zone length of
Protectowire Linear Heat Detector need to be
replaced after detecting a fire or overheat?
back
to top
|
|
Answer: No, only the actuated portion
of Protectowire Linear Heat Detector needs
to be replaced to restore the zone to normal
operation. Location of the actuated portion
of detector can be determined using the
optional Alarm Point Location Meter,
MFL-92 Location System, or
APL-90 Alarm Point Location Meter
Adapter unit. |
|
|
Do you have more questions about
Protectowire Products and Services?
Email us at
pwire@protectowire.com |
