77
Installation
C. INSTALLATION
CAUTION
CAUTION Heaters with overtemperature
devices require specic installation orientation.
Overtemperature devices are required to be
installed in accordance with local codes and
standards and be designed to de-energize the
heater on an overtemperature event.
Electric Shock Hazard Disconnect all power
before installing or servicing the heater.
Failure to do so could result in personal injury
and/or property damage. All maintenance
and installation should be done by qualied
personnel in compliance with local codes.
CAUTION
WARNING
Fire or Shock Hazard Moisture accumulation on
the dielectric material of the elements, sheath
corrosion or overtemperature on the heaters
could cause a fault to ground generating
arcing and molten metal. Install proper ground
fault protections to prevent personal injury or
property damage.
WARNING
WARNING The end user is responsible for the
proper integration of the electrical systems,
including protections, backups, and controls.
CAUTION
CAUTION For explosive atmospheres an
approved liquid level and/ or temperature
limiting control must be used to de-energize
in the event of system malfunction. Unless
otherwise specied, use supply wire suitable
for 90°C min.
1. Unpack and check heater for any damage that may have
been caused during shipping.
2. Remove any dessucant material in the electrical box.
3. Check that all terminal connections are tight.
4. Provide adequate space for vertical or horizontal installation.
With horizontal mounting, inlet and outlet must be directed
upwards at 90° from the horizontal.
5. Ensure that the circulation heater vessel is properly mounted
on a solid steel or concrete base. For heater removal and
maintenance purposes, user must allow sufficient clearance
in the surrounding area of the circulation heater.
6. 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.
7. 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.
8. If the heater is immersed in liquid, a level control switch
or overtemperature sensing device affixed to the
uppermost heating element is required. Check factory for
recommendations.
9. If the heater is installed in a pressurized system, a safety relief
valve must be used to prevent a hazardous pressure buildup.
10. For heaters installed in pressurized system, proper bolting
hardware must be used that is suitable for the pressures
and temperatures of the equipement. Use the appropraite
gasket for the pressure and temperature; torque the bolts on
an even clockwise or counter clockwise pattern. Refer to the
heater drawings for details.
11. Heaters with explosion resistant terminal housings must only
be used in locations for which the heaters are certified.
• Check heater nameplate information for approval code.
• Never energize an explosion resistant heater unless the
terminal housing cover is properly tightened.
• An immersion heater for explosive atmospheres 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.
12. On ATEX/CE certified heaters which are being installed in the
EU, the installation of heater shall be in accordance with the
requirements of the local jurisdiction.
CAUTION Use copper conductors only
with sufcient 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).
CAUTION
WARNING
WARNING Creepage and clearance for
electrical connections to the heater must be
maintained in accordance with local codes and
standards for IECEx and ATEX Increased Safety
installations.
WARNING
WARNING Do not set the overtemperature
protection device above the setpoint indicated
on the heater nameplate. Refer to the heater
drawings for more information.
CAUTION
CAUTION Exposed heater surfaces could be at
elevated temperatures that can cause re or
bodily harm.
