CCI Thermal Technologies EXF - Circulation Heater (Low to Medium Density, Incoloy Sheath) - Manuel (Page 2)

CCI Thermal Technologies Inc. 2767 Brighton Road, Oakville, ON L6H 6J4 Tel. (905) 829-4422 Fax (905) 829-4430
www.ccithermal.com
MI416 REV.0 Page 2 of 3
18.0 In order to allow for expansion and contraction the use of
lock washers when mounting is not recommended. Apply minimum
torque necessary to contain the equipment but still allow for
expansion.
19.0 Heater nozzles are not intended to be used as pipe supports.
User must ensure that inlet and outlet pipes are properly supported.
20.0 Heater must be properly vented or purged depending on
the application. For liquid heater, user must take special care with
piping arrangements to prevent air pockets which can cause heater
failure or damage.
21.0 When using circulation heaters in pressurized systems, user
must install the appropriate relief valve at the outlet of the heater to
allow for thermal fluid expansions due to blockages.
22.0 DO NOT install a shutoff of any kind between the pressure
relief valve and the heater. DO NOT install a shutoff on the discharge
pipe between the relief valve and atmosphere.
23.0 When handling or performing maintenance on the heater,
special care must be taken on all flanged gasket surfaces to prevent
potential scratching.
24.0 The circulation heater and system must be flushed/purged
prior to start of operation to remove any contaminants that could
have been introduced during installation.
Exposed heater surfaces could be at elevated
temperatures that can cause fire or bodily harm.
25.0 Electrical terminal box must be properly closed and sealed
prior to start of operation. Box cover must be properly placed and
tightened. Unused conduit entries must be sealed with suitable
plugs.
OPERATION
RISK OF EXPLOSION. Do not operate heater at
voltages higher than the rating specified on the
nameplate. Failure to do this will cause elevated
temperatures.
For metal sheathed heaters, prior to operation
an insulation resistance check must be
performed. Heater with values less than .5 MΩ
Ω Ω Ω Ω
should follow a drying process. Please contact
factory for details on procedure if heater is under
.5 MΩ
Ω Ω Ω Ω.
FIRE HAZARD. Heater should be submersed in
the fluid for proper operation and to avoid
element overheating that could result in fire or
damage of the heater.
When operating the heaters in a closed system
or vessel, system designers must ensure that
proper controls are used to maintain the
temperature and pressure at normal levels.
8.0 When insulation is supplied, special care must be taken
while handling the heater for installations. Failure to do this could
compromise the integrity of the metal jacket covering the insulating
material.
9.0 Unpack and check heater for any damage that may have
been caused during shipping.
10.0 Remove any dessicant material in the electrical box.
11.0 Check that all terminal connections are tight.
Use copper conductors only with sufficient
current carrying capacity for the heater circuit
load and in accordance with the local electrical
code. Check the heater nameplate for minimum
conductor temperature rating. Temperature
deration factors must be applied for heaters
operating above 30°C(86°F).
12.0 Check supply voltage for compliance with heater nameplate
voltage. DO NOT connect the heater to a voltage source other
than listed on the heater nameplate.
13.0 A line voltage or pilot duty thermostat should be used to
control the heater. The pilot duty thermostat must be used with a
contactor and (if required) a transformer. Generally, heaters
supplied with built-in thermostats will be factory prewired if suitable
for line voltage operation. Integral thermostats not factory prewired
are usually intended for pilot duty.
14.0 It is recommended that the control circuits be supplied from
the isolated secondary windings of transformers avoiding the need
for two supply circuits, or as an alternative, that mechanical or
electrical interlocking be provided so that both supplies must be
disconnected before live parts can be made accessible.
15.0 If there is even the slightest possibility that the liquid level
may fall below the elements, a level control switch or over-
temperature sensing device affixed to the uppermost heating
element is required. Check factory for recommendations.
16.0 If the heater is installed in a pressurized system, a safety
relief valve must be used to prevent a hazardous pressure build-
up.
17.0 Heaters with explosion resistant terminal housings must
only be used in locations for which the heaters are certified.
a) Check heater nameplate information for approval code.
b) Never energize an explosion resistant heater unless the
terminal housing cover is properly tightened.
c) A circulation heater for hazardous locations is approved
for use only if an approved liquid level control and/or
temperature limiting device is used to de-energize the heater
under low liquid conditions.
18.0 Mounting of the heater must follow the design specification
for the heater. Failure to follow this could result in equipment failure
or malfunction.