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WARNING: This is an electrical device and in order to ensure proper operation and prevent shock or fire it must
be installed correctly. Read these important warnings. Follow all installation instructions.
CAUTION: Ground-fault equipment protection must be used to minimize the danger of fire from sustained electrical
arcing if the heating cable is damaged or improperly installed and to comply with Drexan requirements, agency
certifications and national electrical codes. Conventional circuit breakers may not stop arcing. The metal sheath of
CMH heating cable shall be grounded, but shall not be used as the grounding means.
Metallic structures or materials such as metal pipes used to support CMH cable shall be grounded.
CMH Cable is not to cross or come in contact with itself.
CMH heating cables are to be thermostatically controlled.
Component approvals and performance characteristics are based on Drexan specific parts only.
Substitution will void approvals and performance claims.
Component and heating cable ends must be kept dry before and during installation.
Fire resistant thermal insulation should be used.
CMH cable may be terminated or spliced in any certified enclosure mounted off the heated surface.
APPROVALS
120 – 277 Volt. 30 W/ft. max., Maximum withstand temperature 450˚C power off
Installation Instructions
CMH-CON
CMH
- Connect
These installation instructions are only for use with the following
Drexan HeatTracer Self-Regulating heater products: PipeGuard® CMH
This kit may be installed in temperatures as low as -40°F/-40°C.
Drexan Energy Systems, Inc.
Kelowna, BC, Canada, V4V 1S5
Class I, Div. 1/2, Groups A, B, C, D
Class II, Div. 1/2, Groups E, F, G
Class III
231572
Page 1 of 6
HD140401-1 Rev 2
Part No. DREX0074
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Table of Contents
Summary of Contents for DREXAN CMH-CON
- Page 1 CAUTION: Ground-fault equipment protection must be used to minimize the danger of fire from sustained electrical arcing if the heating cable is damaged or improperly installed and to comply with Drexan requirements, agency certifications and national electrical codes. Conventional circuit breakers may not stop arcing. The metal sheath of CMH heating cable shall be grounded, but shall not be used as the grounding means.
- Page 2 CMH Connect Installation Instructions CMH-CON KIT CONTENTS (2) Strain Relief Fittings (with grommets and washers) (2) Heat Shrink Sleeves (2) Silicone Boots (2) Silicone Boots (for end seal only) (2) ¾” Sealing Rings (use with HP-BRAK, bottom entry) Installation Instructions ...
- Page 3 CMH Connect Installation Instructions CMH-CON 5. Cut and remove the wrapped insulation, down to the tape and close to the end of the sheath, taking care not to damage the insulation on the bus wires. Discard the outer insulating layers and cut the heater element close to the tape.
- Page 4 CMH Connect Installation Instructions CMH-CON II. END OF CIRCUIT TERMINATION Note: CMH cable may be terminated in any enclosure certified for the application. When using a non-metallic enclosure use a hub with a grounding lug. 11. Repeat Steps # 1 through 8.
- Page 5 CMH Connect Installation Instructions CMH-CON CMH CABLE REFERENCE CHART CABLE REFERENCE COLOUR CODING ZONE LENGTH 5CMH208 BLACK 10CMH240 WHITE 2 FT 10CMH277 BLUE 15CMH277 ORANGE 5CMH120 NO COLOUR 15CMH208 20CMH240 5CMH277 LIME GREEN 10CMH120 YELLOW 30CMH208 10CMH208 DARK GREEN 1 FT...
- Page 6 CMH Connect Installation Instructions CMH-CON III. PREVENTIVE MAINTENANCE Prior to startup and on a regular annual basis it is recommended that both visual and electrical inspections be performed. The following is a list of heating cable system checks. Thermal Insulation: Check the waterproofing for damage as well as cracks or gaps in caulking on the thermal insulation to ensure no damage exists resulting in poor insulation values.
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