Honeywell C7015A Manual Do Utilizador
INSTALLATION
Fig.
lead sulfide photocell.
CAP
\ , MOUNTING
PLUG-IN LEAD SULFIDE CELL
(PART NO.
METAL CABLE
SHIELDS LEADWIRES
PHOTOCELL
SOCKET
FOCUSING LENS I
Fig. O-Mounting
Infrared Flame
Detector (and accessories).
REFRACTORY
MAIN
FLAME
CHAMBER WALL
TEMPORARY
TACK
TACK
FLARED HOLE
INCH BLACK
IRON SIGHTING PIPE
TO JUNCTION
OR SUBBASE
10
and 11)
d.
I CAUTION
.
Disconnect power supply before beginning instal-
lation to prevent electrical shock and equipment
damage; there may be more than one disconnect
involved.
lation to prevent electrical shock and equipment
damage; there may be more than one disconnect
involved.
1. All wiring must comply with applicable electrical
codes, ordinances,
and
regulations.
Use
Class 1 wiring.
Keeptheleadwiresfromtheflamedetectortotheflame
safeguard control subbase as short as possible. Capacitance
increases with
increases with
length, reducing the signal strength.
The maximum permissible
Iength is fifty feet.
ultimate
in
length is
signal
current/voltage.
Refer to Table 6, Adjustments and Check-
out, page
3. The detector comes with
or in.
or 2.44
leadwires inside a flexible metal cable. The
leadwires consist of a twisted pair-one brown and one
white. The two no. 18 AWG flexible-tinned leadwires are
rated for
rated for
F
C]. The cable protects and electrically
shields the leadwires.
4. If the leadwires are not long enough to reach the
terminal strip or wiring subbase, make the required splices in
a junction box (see IMPORTANT below).
a junction box (see IMPORTANT below).
5. If splicing is necessary, use moisture-resistant no. 14
wire suitable
for
at
least 167” F
if
the detector is used
194°F
C] if used with a flame safeguard
programming
control.
6.
For splicing in high temperature installations, use
Honeywell specification no.
or equivalent for the
F leadwire. (This wire is rated up to 400” F
for
continuous duty. It is tested for operation up to 600 volts and
breakdown up to
volts.) For the other leadwire, use
moisture-resistant no. 14 wire selected for a temperature
rating above the maximum operating temperature.
rating above the maximum operating temperature.
IMPORTANT:
a.
C.
Flame detector leadwires must be as short
sible. The maximum
detector to the
safeguard control is 50
m].
Extensions to
detector leadwires must be
run alone in either rigid orflexible metal
When
detector leadwires exit a conduit, they
must be as short as possible, twisted, and not be
included in bundles or channels that contain other
wires. Rigid metal conduit
detector leadwires are extended
metal
conduit may be used is supported to minimize
movement.
The
cable shield must be
grounded to
safeguard control subbase
either directly or through the metal cabinetlconduit
system that contains flame safeguard control
subbase
detector leadwires.
When
detector leadwires are routed through
junction boxes,
the junction boxes with the
pressure-sensitive labels provided wiih the flame
detector
UNDERWRITERS LABORATORIES INC. RE-
QUIRES THAT THE JUNCTION BOX BE
MARKED TO INDICATE
OTHER WIR-
ING CONNECTIONS CAN BE ROUTED
THROUGH IT. APPLY CAUTION STICKER
(FORM
FURNISHED) TO THE JUNC-
TION BOX.
Maximize the separation between ignition trans-
former high voltage wires and the
sensor
wires to avoid ignition interference.
60-2306-5