Thermon MIQ Mineral Insulated Heating Cable v.2 - Manual (Page 9)

INSTALLATION PROCEDURES
Completing the Installation . . .
1. Begin final cable attachment by securing the end of circuit
and working back toward the power supply.
• MlQ mineral insulated heating cables are typically
installed with tie wires or stainless steel banding at 12"
(30 cm) intervals. Use only Thermon approved banding.
Do not over tighten banding or tie wire. These cables
may also be installed with heat transfer compound and
metal channels.
• If applicable, refer to installation details provided with
the project drawings or contact Thermon for additional
information regarding installation.
2. Before making power connections, the MIQ cable should
be tested to ensure electrical integrity with at least a 500
Vdc megohmmeter (megger) between the conductors and
the metal sheath. IEEE 515 recommends test voltage of
1000 Vdc for mineral insulated cable. Minimum resistance
should be 20 megohms.
Hot to Cold Junction
MI Heating Cable
Cold Lead
Gland Connector
Hot End
Termination
Stainless Steel Tie Wire
or Banding (Typ.)
3. MIQ series resistance heating circuits are typically prefab-
ricated at the factory. Junction boxes to complete a typical
MIQ circuit connection to power may not be supplied as
part of the system. For Ex d and AEx d sets, use only Ex d
connection fittings. For Ex de and AEx de sets, use only
Ex e connection fittings. Refer to Installation instructions
included with power/splice enclosures or contact
Thermon for additional information.
4. Route MIQ cable set cold lead(s) into junction box hub(s).
Slowly tighten gland connector with set of wrenches until
ferrule begins to make positive contact with cold lead
sleeve and cold lead can not be moved by hand. Then
tighten fitting 1/8 additional turn.
5. Secure temperature sensor (if required) to pipe utilizing
stainless steel banding. Locate temperature sensor as
shown in Illustration B.
Illustration J: Typical Installation. . .
6"
(15 cm)
6"
(15 cm)
6"
(15 cm)
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