Thermon MIQ Mineral Insulated Heating Cable v.1 - Manual (Page 2)

MIQ TM Mineral Insulated Heating Cable
The following installation procedures are suggested
guidelines for the installation of a Thermon MIQ mineral
insulated heat tracing system. Refer to project specifi cations,
if applicable.
The installation must comply with Thermon requirements
and be installed in accordance with the regulations as per
the norm EN-IEC 60079-14 and EN-IEC 60079-30 for
hazardous areas (where applicable), and any other applicable
national and local electric codes. For each installation,
the vendor is to provide the design parameters for an
engineered system which will designate the cable length,
the total cable wattage, and the cold lead length for a
specifi c application.
Applications . . .
1. MIQ heating cables are used for freeze protection
or temperature maintenance of piping, tanks and
instrumentation.
2. Heat tracing cables may be installed in ordinary
(nonclassifi ed) and hazardous (classifi ed) locations
depending on the specifi c cable options and approvals.
Due to the risk of electrical shock, arcing and fi re caused by
product damage or improper usage installation or maintenance,
a earth/ground-fault protection device is required for all heat
tracing circuits. Bond the metal sheath of the heat tracing cable
to a suitable earth terminal.
Site Practice . . .
1. Individuals installing these products are responsible for
complying with all applicable safety and health guidelines.
Proper Personal Protective Equipment (PPE) should be
utilized during installation. Contact Thermon if you have
any additional questions.
2. Provide training to employees for understanding the
purpose/function of the electrical heat tracing and the
electrical power supply/control equipment, and how to
recognize and avoid the hazards associated with operation
and maintenance.
3. Apply safe work practices including the following:
• Identify the circuit or equipment to be de-energized and
all possible sources of electrical energy supplies to the
specfi c circuit or equipment.
• Disconnect both legs of the power supply cable at the
circuit breakers, disconnect switches, and any other
applicable points.
• Apply lockout/tagout devices according to established
procedures.
• Visually verify that the circuit disconnect devices are
open prior to connecting power cable to heat tracers.
• Test for absence of voltage with an approved voltmeter
(where the voltmeter is tested on a known circuit voltage
prior to and immediately following application).
• For protection against accidental energizing of supply
conductors, apply temporary jumpers rated for the
available fault duty between each supply conductor and
earth.
Illustration A: Typical Heat Tracing Installation
Notes . . .
1. Thermostat or solid state temperature control device must be used when the
system T-rating relies on controlled designs to limit sheath temperature.
2. Illustration depicts a typical MI heating circuit.
3. All heat-traced lines must be thermally insulated.
Complete Electric Heat Tracing System 1 . . .
A complete electric heat tracing system may typically include
the following components
2 :
1.MI heat tracing cable.
2.Cable set hot to cold fi tting.
3.Cold lead.
4.Stainless steel tie wire (use on 30cm intervals or as
required by code or specifi cation).
5.“Electric Heat Tracing” label (peel-and-stick label attaches
to insulation vapor barrier on 3m intervals or as required
by code or specifi cation).
6.Thermal insulation 3 and vapor barrier (by others).
The absence of any of these items can cause a system to
malfunction or represent a safety hazard.
6
5
1
2
3
4
1