Specification
MOUNTING MEAN
S:
L4064A,B,E,F,J
,R,T-r
igid bra
ck
et, swivel
br
acket,
or
flush
mount
ing.
L4064C,D-flush
mounting only.
CASE DIMENSIONS: See
Fig.
1.
ELEMENT DIMENSIONS:
L4064A,B,E,F,J,R,T (helical)
-3/
4 in.
[1
9.1
mm]
diameter;
5,
8,
or
11-1/2 in. [12
7,
203.2
or
292.1
mm]
insertion.
L4064C
,D
(flat
spiral)-1-1/2
in. (38
.1
mm]
diameter;
1-1
/2
in. [38.1
mm]
insertion.
ADJ
USTME
NT
MEAN
S: Ad
just
able
levers
on
scaleplate.
FINISH: Zinc-plated steel.
[
I
WHEN INSTALLING THIS PRODUCT
...
1.
Read these instructions carefully. Failure to follow
them could damage the product
or
cause a hazardous
condition.
2.
Check the ratings given
in
the instructions and on
the product to make sure the
product
is suitable for
your application.
3.
Installer must be a trained, experienced service
technician.
4.
After installation is
comp
lete, check out product
operation
as
provided in these instructions.
CAUTION
1. Disconnect power supply before beginning in-
stallation to prevent electrical shock and
equipment damage.
2. When connecting
cable
or
conduit to control,
avoid straining the control case.
Follow furnace
or
burner manufacturer's instruc-
tions, if
available. Do NOT exceed the ratings and
limitations given in this section.
LOCATION
If this is a replacement installation, locate the L4064
in the same location
as
the control being replaced.
Sensing tube length should be same as old control. If
this is a new installation, the eleme
nt
should be installed
only by a trained, experienced service technician ac-
cording to the furnace manufacturer's instructions. The
eleme
nt
must not touch any internal part
of
the furnace.
NOTE: The
electrical rating is at maximum switch
temperature of
190 F (88
CJ.
If plenum surface
temperature exceeds
190 F (88
CJ.
heat insulating
material or mounting bracket must be used. The
L4064J,R requires the use
of
a bracket in gravity
sytems.
MOUNTI
NG
The devices may be mounted as follows:
L4064A,B,E,F,J.R,T-flush mounting
or
bracket (r
ig
-
id or swivel).
L4
064C,
D-flus
h mounting only.
4
WI
RING KNOCKOUTS:
L4064A-F,J,R
-two
in bott
om
of
cas
e,
slotted for
easy installation.
L4064T
-has
one knoc
kout
in bottom
of
case.
UN
DERWRITERS LABORATORIES INC. APPROVALS:
L4064A,B,C,D,T
LISTED-File
MP466, Guide MBPR;
L4064E
,F,J
and
R
COMPONENT
REC
OG-
NIZED- File MP466, Gui
de
MBPR
2.
AC
CESSORIES:
1.
110265A Rigid
Bracket-s
ingle wing, with No.
8-32 setscrew.
2.
129250A Rigid
Bracket-double
wing, with No.
8-
32
setscrew.
3.
32612A Swivel Bracket.
4.
137813 Strain
Rel
ief Bushing.
FLUSH MOUNTING
L4064A,B,E,F,J,R,T
Hole in plenum should be just large enough to
acc
ommod
ate the
3/4
in.
(19.1
mm) diameter element
tube. For adequate clearance an
0.80 in. (20.3 mm]
diameter
hole is recommended.
L4064C,D
Hole
in plenum should be
1-9/16
in. [39.7 mm]
diameter to accommodate the
1-1
/2
in. [38.1 mm]
diameter element.
1.
Remove cover by squeezing sides and pulling off.
Insert element in plenum and mark location of mount-
ing holes. Make sure the case is snug against the
plenum before marking the mounting holes.
2.
Punch
or
drill holes
for
mounting screws.
3.
Place insulation between plenum and case if
necessary.
4.
Fasten controller securely with mounting screws.
FURNACE
PLENUM
HEAT
I
NSULA
T
ING
fl/.ATER
lAL
IF
NEEDED
FIG.
2-FLU
SH MOUNTING (L4064A,B,E,F,J,R,T). RE-
QUIRES A HOLE 0.80 in. [20.3
mm]
DIAMETER
IN
THE PLENUM.