Chromalox®
Installation, Operation
and
RENEWAL PARTS IDENTIFICATIONDIV. | SEC. GCHMT | NUMBER 3001 |
SALES | (Supersedes PF465) | PE436 |
REFERENCE | ||
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Chromalox Type GCHMT Circulation Heater For
Steam, Gas and Air Heating
(Std.)
(Std.)
Specifications — Table A
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| Watts | Dimensions (in.) | |||
Catalog |
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| Per |
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Number | Voltage | Phase | KW | Sq.In. | A | B | C | |
120 | 1 | 1 | 15 | — | ||||
240 or 480 | 1 or 3 | 23 | ||||||
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240 or 480 | 1 or 3 | 3 | 15 | |||||
23 | ||||||||
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240 or 480 | 1 or 3 | 5 | 15 | |||||
23 | ||||||||
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240 or 480 | 1 or 3 | 7.5 | 15 | 56 | 50 | |||
23 | ||||||||
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240 or 480 | 1 or 3 | 9 | 15 | 67 | 61 | |||
23 | ||||||||
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WARNING: Safe operating conditions depend on operating pressure, mass velocity of gas and discharge temperature of the gas. At a given discharge gas temperature heater element sheath temperature, and pipe body temperature tend to increase as gas flow (mass velocity) decreases. The standard GCHMT has a 750˚F limitation on the carbon steel body and a 1500˚F limit on the incoloy sheath elements. Check factory if any doubt exists as to temperatures that will be encountered in your specific applica- tion. A stainless steel body is required at pipebody temperatures above 750˚F.
GENERAL
DANGER: This heater is not intended for use in hazardous atmospheres where flammable vapors, gases, liquids, or other combustible atmospheres are present as defined in the National Electric Code. Failure to comply can result in explosion or fire.
Hazardous area terminal enclosures are available, consult your local Chromalox representative for details.
The GCHMT series is a
The 3
plug. The assembly is surrounded by
Depending upon the specifications, the GCHMT may or may not be factory equipped with AR or other Chromalox thermostats. Such thermostats function to control outlet temperatures under abnormal flow condition. These controls do not
WARNING: Users should install adequate
INSTALLATION
WARNING: Hazard of electric shock. Disconnect all power before installing heater.
1.Vertical mounting (axis of chamber vertical as in sketch above) is preferred. Check factory for recommendations on hori- zontal mounting.
2.To avoid excess temperatures at electrical wiring, mount heater with terminal enclosure at bottom, and use lower nozzle as inlet to the circulating steam, air, or gas.
3.The GCHMT series of circulation heaters are provided with mounting lugs to support the heater chamber. Refer to sketch above for location of these mounting lugs.
4.Mount heaters to permit unrestrained expansion of chamber
due to temperature. This can be accomplished by using a slotted mounting assembly on either of the lugs.
5.DANGER: Hazard of fire. Provide minimum of 6” spacing from a chamber and related piping to nearest combustible materi- al. Avoid operation of heater near combustible fluids or in com- bustible vapor or gas laden atmosphere.
6.Provide adequate space at terminal end to permit withdrawal of the heater from chamber should servicing be required.
7.If two or more heaters are needed to provide the needed heat- ing capacity, arrange them for series gas or vapor flow.
8.DANGER: Possible explosion. A pressure relief valve should be provided by customer at outlet of vessel. There should be no other valving between vessel and valve.
© 2010 Chromalox, Inc.
