Chromalox Gas Heater PE436 User Manual

®
Chromalox  
SERVICE REFERENCE  
Installation, Operation  
DIV.  
SALES  
REFERENCE  
SEC. GCHMT  
NUMBER 3001  
and  
(Supersedes PF465)  
PE436  
161-303183-001  
RENEWAL PARTS IDENTIFICATION  
DATE  
AUGUST, 1994  
Chromalox Type GCHMT Circulation Heater For  
Steam, Gas and Air Heating  
Specifications — Table A  
Watts  
Per  
Dimensions (in.)  
Catalog  
Number  
Voltage  
120  
Phase  
1
KW Sq.In.  
A
B
C
GCHMT-30105  
GCHMT-3105  
GCHMT-30305  
GCHMT-3305  
GCHMT-30505  
GCHMT-3505  
GCHMT-30755  
GCHMT-3075  
GCHMT-30905  
GCHMT-3905  
15  
1
20-1/2  
9-3/8  
240 or 480  
1 or 3  
23  
15  
240 or 480  
240 or 480  
240 or 480  
240 or 480  
1 or 3  
1 or 3  
1 or 3  
1 or 3  
3
30-5/8  
22-1/2  
16-1/2  
(Std.)  
23  
15  
56-3/8  
30-5/8  
67-1/8  
56-3/8  
78-1/8  
56-7/8  
45-1/4  
22-1/2  
56  
39-1/4  
16-1/2  
50  
5
23  
15  
7.5  
23  
45-1/4  
67  
39-1/4  
61  
15  
9
23  
45-1/4  
39-1/4  
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.  
(Std.)  
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.  
plug. The assembly is surrounded by 1-1/2” insulation and sheet  
metal jacket.  
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 fail-safe.  
Hazardous area terminal enclosures are available, consult your  
local Chromalox representative for details.  
WARNING: Users should install adequate back-up controls  
and safety devices with their electric heating equipment.  
Where the consequences of failure may be severe, back-up  
controls are essential. Although the safety of the installation  
is the responsibility of the user, Chromalox will be glad to  
make equipment recommendations.  
The GCHMT series is a general-purpose gas or steam circula-  
tion heater intended for use indoors.  
The 3 incoloy-sheathed tubular elements are centered in a 3”  
diameter steel heating chamber and welded to a removable screw  
INSTALLATION  
WARNING: Hazard of electric shock. Disconnect all power  
before installing heater.  
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.  
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  
© 2010 Chromalox, Inc.  
 

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