®
Chromalox
SERVICE REFERENCE
Installation, Operation
DIVISION
SALES
4
SECTION GCH-GCHIS
and
(Supersedes PE419-4)
PE419-5
REFERENCE
RENEWAL PARTS IDENTIFICATION
161-027331-001
DATE
FEBRUARY, 2009
GCH and GCHIS-6 Circulation Heaters
For Steam, Gas and Air Heating
Specifications — Table A
1” Pipe
Outlet
Dimensions (In.)
Model
Volts
Phase
kW
W/In2
A
B
C
D
GCH-60905
GCH-61205
GCH-62005
GCH-62505
GCH-63005
GCHIS-6045
GCHIS-6085
GCHIS-6125
GCHIS-6155
GCHIS-6205
240 or 480
240 or 480
240 or 480
240 or 480
240 or 480
240 or 480
240 or 480
240 or 480
240 or 480
240 or 480
1 or 3 L
1 or 3 L
1 or 3 L
3Y
9
23.8
23.1
23.3
22.9
22.7
15
41-3/4
48-3/4
60-1/4
73-5/8
86-5/8
41-3/4
48-3/4
60-1/4
73-5/8
86-5/8
30
25
25
25
25
25
25
25
25
25
25
11-3/8
14-7/8
20-5/8
27-5/16
33-7/8
11-3/8
14-7/8
20-5/8
27-5/16
33-7/8
1-1/4”
12
20
25
30
4
37
48-1/2
61-7/8
74-7/8
30
3Y
3Y
3Y
8
15
37
Mtg. Lugs
3Y
12
15
30
15
48-1/2
61-7/8
74-7/8
B
3/8-16 Tap
3Y
15
C
1-1/2” Deep
A
3Y
15
8”
12-1/32”
1” Pipe
Inlet
AR
Thermostat
8-3/4”
1-3/8” K.O.
For 1” Conduit
GENERAL
Depending upon the order specifications, the GCH-GCHIS-6 may
or may not be factory equipped with an AR or other Chromalox ther-
mostat. Such thermostats function to control outlet temperatures and to
limit internal temperatures under abnormal flow conditions. These
controls do not fail safe.
Read and understand all instructions before
installing, servicing or operating product. Failure
to do so could result in personal injury or property
damage.
The GCH and GCHIS-6 series is a general-purpose gas or steam
circulation heater intended for use indoors.
The 6 INCOLOY® sheathed tubular elements are centered in a 5”
diameter heating chamber and welded to a removable flange. The
assembly is surrounded by 1-1/2” insulation and sheet metal jacket.
The GCH series has a steel flange and chamber. The GCHIS series has
stainless steel flange and chamber.
The system designer is responsible for the safety
of this equipment and should install adequate
back-up controls and safety devices with their
electric heating equipment. Where the conse-
quences of failure could result in personal injury or
property damage, back-up controls are essential.
© 2010 Chromalox, Inc.
WIRING
CONTACTOR
CONTACTOR
CONTACTOR
L1
L2
L3
L1
L2
L3
L1
L2
L3
120V, 240V
120V, 240V
120V, 240V
THERMOSTAT
THERMOSTAT
THERMOSTAT
Figure 8 – GCHIS
240V, 3øY
Figure 9 – GCHIS
40V, 3øY
Figure 7 – GCH6
480V, 3ø
Instructions for converting
240V LINE
480V LINE
GCH6, 240V, 3ø to GCH6, 480V, 3ø
166-014828-024
166-075229-018
1. Remove all jumper straps and separate
according to different lengths.
166-075229-014
2. Discard jumper straps 166-075229-018
(1-1/4” long).
3. Reassemble jumper straps 166-014828-
024 (2-1/2” long) and 166-075229-014
(1-1/2” long) as in Figure B.
166-014828-024
FIGURE B
480V, 3ø (Series) Connected
166-075229-014
240V, 3ø (Parallel) Connected
FIGURE A
4. Replace washers and nuts.
5. Check circuits.
NOTE: Broken Lines Indicate “Customer-furnished”. However, thermostat could have been furnished by chromalox if so specified on order.
OPERATION
1. Do not heat materials that are corrosive to the heating element
sheath or chamber.
2. Terminal ends of heater must be protected from drippings, con-
densation, spray or direct spill-over of material whose presence at
the terminals may damage heater electrical insulation. Liquid-tight
terminal enclosures are available to protect heater. Consult your
local Chromalox Sales office.
given discharge gas temperature, heater element
sheath temperature and pipe body temperature
tend to increase as gas flow (mass velocity)
decreases. The standard GCH-6 has a 750˚F limita-
tion 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 application. At pipe
body temperatures above 750˚F, stainless steel
pipe body is required (model GCHIS).
3. If foreign material is carried by the gaseous flow, install suitable
filters in the inlet pipe line to the heater.
4. Do not allow heater to operate when steam, air or gas flow is inter-
rupted.
FIRE/EXPLOSION HAZARD. Safe operating condi-
tions depend on operating pressure, mass velocity
of gas and discharge temperature of the gas. At a
FIRE/EXPLOSION HAZARD. Do not exceed the
Pressure-Temperature rating of the flange as list-
ed in ANSI B16.5.
MAINTENANCE
2. Periodically check temperature control and limit control operation
to insure accurate and safe process operation.
3. Check all electrical connections periodically and retighten con-
nections which may have loosened in service. Replace wire and
wire terminals that show signs of oxidation which would interfere
with establishment of reliable electrical connections.
ELECTRIC SHOCK HAZARD. Disconnect all power
before installing or servicing heater. Failure to do so
could result in personal injury or property damage.
Heater must be installed and serviced by a qualified
person in accordance with the National Electrical
Code, NFPA 70.
NOTE: Maintenance intervals to be determined by the user based on
their knowledge of the heated medium and operating conditions.
1. Remove heating element assembly periodically to check heater
sheath for corrosion or excessive oxidation. Correct operating con-
ditions to minimize sheath deterioration.
RENEWAL PARTS
Catalog Number
GCH-60905
Volts
Phase
kW
Heating Element
240
240
480
482
1
3 L
1
9
9
9
9
155-115143-001
155-115143-002
155-115143-003
155-115143-004
3 L
240
240
480
480
2-1
3 L
1
12
12
12
12
155-115143-006
155-115143-007
155-115143-008
155-115143-009
GCH-61205
GCH-62005
3 L
240
240
480
480
2-1
3 L
1
20
20
20
20
155-115143-011
155-115143-012
155-115143-013
155-115143-014
3 L
240
480
480
2-3 L
2-1
3 L
25
25
25
155-115143-016
155-115143-017
155-115143-018
GCH-62505
GCH-63005
240
480
2-3 L
3 L
30
30
155-115143-020
155-115143-021
Note: When ordering parts for Model Numbers suffixed by “XX” or any other letter or any other letters not specifically identified on this instruction sheet, order Renewal Parts on special order basis, giving
name of part, part number, model number and description. Note: Number in ( ) indicates quantity of same part number used. Model GCHIS - contact local Chromalox Representative.
PARTS COMMON TO ALL HEATERS
AR5524 Thermostat
Standard Gasket
300-013863-015
132-017222-016
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
2150 N. RULON WHITE BLVD., OGDEN, UT 84404
TA - U0 - EF
Litho in U.S.A.
Phone: 1-800-368-2493
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