7
Installation
The ITC employs a SSR (Solid State Relay) as a
means to switch the heating load power. Inher-
ently, SSR’s produce heat when operating. Heat
is dissipated at the rear of the ITC through a
heat sink. By design, the ITC must be mounted
in a vertical orientation in order to allow the
heat sink to properly dissipate the heat from
the controller. See Figure 1.
The ITC is shipped with one set of stainless steel
mounting brackets. These brackets were specifically
designed to allow sufficient airflow in and around the
heat sink. The air flow above or below this heat sink
must in no way become restricted. See Figure 1.
To maintain UL compliance, the heat sink must be
inspected every season to confirm that no debris or
objects are in contact with the heat sink. All debris
must be removed from the heat sink fins. High pressure
blasts of clean, dry air or other means which will not
damage the fins are to be used to dislodge all debris
from the fins.
Should the owner decide not to use the provided brack-
ets, mounting of the ITC must incorporate all of the fol-
lowing dimensional safeguards (Refer to Figure 2):
1. Maintain a minimum of 1.5” (3.8 cm) of free air space
on either side of the heat sink (K)
2. Maintain a minimum of 1.8” (4.6 cm) of free air space
directly behind the heat sink (C)
3. Zero air flow restriction above and below the heat
sink.
4. The mounting surface, customer mounting bracket
and fasteners must be of suitable structural design
to support four times the weight of the equipment.
Violating any of the heat sink clearance dimen-
sions or if the equipment is used or mounted in
a manner not specified by Chromalox, the pro-
tection provided may be impaired. This could
result in equipment damage, personal injury or
both.
Figure 1
C
K
K
Heat Sink
Top View of ITC
Controller
Mounting
Brackets
Front
C
He
at
Si
nk
Right Side View
of ITC Controller
Mounting Surface
Front
Figure 2
Mounting Surface Considerations
The preferred materials of the mounting surface in-
clude metals, concrete or wood products. If the ITC
is to be mounted outdoors, then the metals shall have
corrosion resistant properties and the wood products
shall be treated for outdoor use. If the mounting sur-
face is plaster (drywall), it shall be of the following mini-
mum construction: 1/2”, +/-1/16” (10 mm, +/-2mm) in
thickness and supported by nominal 2” x 4” (50mm
x 100mm, +/-10 mm) studs that are on 16”, +/- 1/2”
(400mm, +/- 10mm) centers. See Dimensions section
for wall mount layout and hole location. Mounting shall
be performed by experienced professionals.
Fasteners
The fasteners shall be of 300 series (304 or 316) stain-
less steel and they shall be a #8 or #10 (or metric equiv-
alent) bolt or screw configuration. If anchors are to be
used, ensure that they match the fastener specifica-
tion.
Improper mounting may cause an unsafe con-
dition resulting in equipment damage or failure
which could cause personal injury.