Qmark ICG User Manual [en, es, fr]

G Series

(Model B)

Convector Heater for

Hazardous Locations

GENERAL

Type G-Series Convection Heaters are designed for use in
Class I, Div. I hazardous environments. Units without control
options are suitable for areas classified as Groups B, C & D.
Units with built-in controls can be supplied for Groups C and
D or B, C and D. Refer to classification stamped on heater
nameplate.

WARNING:

this heater should not be installed in areas where vapors or
gases having an ignition temperature less than 280˚C
(536˚F)(T2A) at 1.8kW, 3.6kW, 4.5kW, 7.2kW, 9.0kW or
180˚C (356˚F)(T3A) at 1.6kW, 3.2kW, 4.0kW are present.

WARNING:

temperatures exceeding 40˚C (104˚F).

NOTE:
lines requirements for installation of electrical equipment in
hazardous (Classified) locations.

To prevent ignition of hazardous atmospheres,

These heaters must not be operated in ambient

Article 500 of the National Electric Code (NEC) out-

SAVE THESE INSTRUCTIONS

!

1. Only connect heaters to the same line voltage as on
heater nameplate.

2. All controls such as thermostat and contactor, when
required, must have the same explosion-proof rating as
heater.

3. Do not install one unit above the other.

4. Units must be mounted a minimum of 8” above the floor.

5. Heaters must be mounted on wall in a horizontal position
with terminal end at right only.
wall.

6. All unit electrical installation fittings, conduit, wiring, and
seals must meet NEC and local codes for hazardous loca­tions. External line fusing or circuit breaker protection is
required.

7. Hazard of Shock. Heater must be effectively grounded in
accordance with the National Electrical Code.

8. Failure to understand and follow these installation instruc­tions and the “WARNING” notes contained therein may
result in severe personal injury, death, or substantial
property damage.

Never

recess heater into

INSTALLATION

WARNING:

before installing heater.

NOTE:
Heaters can be mounted directly on any type of surface
(masonry, concrete, block, plastered walls, metal framework,
etc.) using appropriate hardware

1. Remove front panel by removing threaded bolts.

2. Locate desired heater position on wall.

3. Locate mounting holes for rear panel. Rear panel must be
a minimum of 8” from the floor.

4. Refer to Figure 1A, 1B, or 1C for mounting hole layout for
each cabinet size.

Hazard of electric shock. Disconnect all power

Heaters can be mounted individually end to end.

5. Drill a pilot hole in wall mounting surface at each mounting
hole location. Use a convenient small size drill.

6. Drill the mounting holes in accordance with size in Table 1.
Insert anchors where applicable.

7. Fasten rear panel to wall with screws noted in Table 1.

WARNING:

across heating elements requires the front panel in place.
Injury from hot heating element possible with front cover
removed.

Never operate heater with front panel off. Air flow

1

INSTALLATION

1/2

7/8

5/16

3

/4" Conduit Entrance

7

D

S

ee Detail "A"

8-15/16

D

C

C

B

19

20-1/16

A

2-3/8

5-1/16

3

-3/8

1" Conduit Entrance

8-7/8

D

See Detail "A"

C

C

D

19

20-1/16

8-15/16

A

B

Feet are Optional
P

rimarily Used to Protect
Thermowell During Shipping
and Installation

3/4" Conduit Entrance

7

D

See Detai "A"

C

C

D

19

20-1/16

8-15/16

5-1/16

3-3/8

A

2-3/8

G SERIES MODELS WITHOUT CONTROLS — GROUPS B, C AND D

Dimensions (In.)

kW ABCD

.6

1

1.8 34 20 7
.6

3

.2

3

7.6

.0

4

4.5 70 48 24 11
.0

9

G SERIES MODELS WITH BUILT-IN CONTROLS — GROUPS B, C AND D

Dimensions (In.)

kW ABCD

1.6

1.8 34 20 7

3.6

3.2

7.6

4.0

4.5 72 48 24 11

9.0

Figure 1A

N/A

58 32 16 13

Figure 1B

N/A

58 32 16 13

G SERIES MODELS WITH THERMOSTAT ONLY — GROUPS C AND D

Table 1 — Suggested Heater Mounting Screws — Types and Sizes

Type of Mounting ** Accessory Screw Size to Fit

Surface Hardware Screw Type Drill Size and Type Mtg Hole Size

Concrete Block

Masonry

Wood Studs — — Wood or Metal (Self Tapping) — — † # 1/4” x.................lg

Plaster wall Hollow or

Similar Type

* Metal Beam, Nuts

Channel, etc. Washers

*If clearance permits use washer, lock washer and nut; otherwise drill and tap to these lengths, add thickness of beam, washers, nut, etc.
**If mounting structure permits. Except plastered hollow walls explosive type anchors can be used. Suggested size noted in Table and/or
sketches should be used to determine size of anchors.
†Select overall length of screw to provide a minimum penetration of 1 inch into base wall material.

2

Ackerman Rd. Hd. Mach. Steel 1/2” Masonry † 1/4” x 20 x ............lg

Rd. Hd. Mach Steel or Pan Hd.

Metal (Self Tapping)

Rd. Hd. Mach. Steel #7 Twist † 1/4” x 20 x ............lg

5/16” Masonry † # 1/4” x .................lg

Lead Anchor

— — Toggle Bolt #7 Twist † # 1/4” x .................lg

Figure 1C

Dimensions (In.)

kW ABCD

1.6

1.8 34 20 7

3.6

3.2

58 32 16 13

7.6

4.0

4.5 70 48 24 11

9.0

N/A

7/8

Mounting Hole

Detail “A”

WIRING

Elements

Optional Thermostat

Built-In or Ext. Supplied

Single Phase — No Controls, 120-277V
 & Heater Amps < 22A

Elements

Optional Thermostat
Built-In or Ext. Supplied

Single Phase — No Controls, Volts > 277V
& 120–277V When Heater Amps > 22A

External

Contactor

480V 1PH
Double
Element
Heaters

Control
Voltage

Elements

Optional Thermostat
Built-In or Ext. Supplied

External

Contactor

Control
Voltage

Three Phase – No Controls

Optional Thermostat
Built-In or Ext. Supplied

Contactor

Transformer

Element Wiring
1 PH or 3 PH
Single or Double
Element

Single or Three Phase
With Controls — Contactor & Transformer

Optional Thermostat
Built-In or Ext. Supplied

Contactor

Line
Voltage
Control
Voltage

Element Wiring
1 PH or 3 PH
Single or Double
Element

Single or Three Phase
With Controls — Contactor & Line Voltage Control

Optional Thermostat
Built-In or Ext. Supplied

Contactor

Element Wiring
1 PH or 3 PH
Single or Double
Element

Single or Three Phase With Controls —
Contactor & External Supplied Control Voltage

Terminal

Block

External
Supplied
Control
Voltage





WARNING:

heaters must be effectively grounded in accordance with the
National Electrical Code.

1. All wiring must be done in accordance with local codes and
the National Electrical Code by a qualified person as
defined in the NEC.

WARNING:

2. Rough-in-line-wiring to unit in manner approved for haz­ardous locations. (See warning below.)

3. Wire per diagrams 1 through 6 based on the rating and con­trol options listed in table 2. Refer to table 3 for amperage
specifications.

Hazard of Shock. Any installation involving electric

Use copper conductors only.

4. Remove cover of conduit box for connections. Use either
opening and plug the other with the plug provided.

5. In single phase units (except 480 V) the heaters must be
wired in parallel, combining L1 to L1, L2 to L2 and for 3
phase unit, L3 to L3. On 480V single phase units the ele­ments must be wired in series.

6. Re-assemble cover with a minimum of 7 turns.

WARNING:

(Group B atmospheres) To prevent ignition of
Group B atmospheres, conduit runs must not exceed 3/4” in
size and all conduit runs 1/2” size and larger must have a seal­ing fitting connected within 2”, 6” or 18” of the terminal enclo­sure depending on the exact model. For correct placement,
refer to data located on the enclosure label.

Diagram 1

Diagram 3

L2 or N

L1

L3
L2
L1

Diagram 2

Diagram 4

L2

or N

L1

L2

L1

L3
L2
L1

L3
L2
L1

Diagram 5

CAUTION:

devices with their electric heating equipment. Where the conse­quences of failure may be severe, back-up controls are essen­tial. The safety of the installation is the responsibility of the
user.

Users should install adequate controls and safety

L3
L2

L1

Diagram 6

OPERATION

1. Do not operate heater at voltages in excess of that stamped
on the heater since excess voltage will shorten heater life
and cause high element temperatures which may exceed
allowable temperatures of operation in a hazardous
atmosphere.

3

MAINTENANCE

WARNING:

before servicing or replacing heaters.

1. Before activating for next heating season, vacuum or use
compressed air to remove accumulated dust or lint, which
otherwise may restrict proper air flow.

Hazard of Shock. Disconnect all power to heater

2. Periodically check all electrical connections and retighten
to avoid electrical wiring difficulties.

3. Check to ensure terminal cover is tightly closed before
energizing.

Sealed, Heavy duty Finned
Element assembly.

Explosion Proof
Junction Box
for Field wiring

Mounting Holes

4

MODEL NUMBER BREAKDOWN

Model
G-Series Explosion Proof Convection Heater

Temperature Rating

G Code kW ID Number ˚F ˚C (BTU)

160 1.6 T3A 356 180 5,500
180 1.8 T2A 536 280 6,150
320 3.2 T3A 356 180 11,000
360 3.6 T2A 536 280 12,300
400 4.0 T3A 356 180 13,600
450 4.5 T2A 536 280 15,350
760 7.6 T2A 536 280 25,930
900 9.0 T2A 536 280 30,700

Code Voltage Maximum kW Allowable

0 120 1.8

4 240 9.0
38 380 9.0
48 480 9.0

6 600 9.0

7 277 9.0

8 208 9.0

Code Phase

1 1Ø
3 3Ø (Not available in 120, 277V)

Control Combination

Code Contactor Transformer

Coil Secondary

None None

CX 24 Volt 24 Volt

CX* 120 Volt 120 Volt

Code Temperature Control

TB Thermostat 40 - 90˚F

T Thermostat Group C & D

None

Group B, C & D

50 - 90˚F

G 760 48 3 CX T

Note: Letter “B” will appear after phase code to indicate engineering version.

5

TABLE 2 — TEMPERATURE SPECIFICATIONS

DIMENSIONS REPLACEMENTS ELEMENTS REQUIREMENTS

Temperature Rating T3A 356˚F (180˚C) Common To Units W & W/O Suffix B

kW BTU Volts Phase Amps Model Width A Height B Depth C Wt. (Lbs.) Element P/N Qty.

1.6 5,500 208 1 7.7 CVEP-C-16-81 34” 20” 9” 58 003-304650-002 2

1.6 5,500 208 3 4.4 CVEP-C-16-83 34” 20” 9” 58 003-304650-005 2

1.6 5,500 240 1 6.7 CVEP-C-16-21 34” 20” 9” 58 003-304650-096 2

1.6 5,500 240 3 3.8 CVEP-C-16-23 34” 20” 9” 58 003-304650-006 2

1.6 5,500 277 1 5.8 CVEP-C-16-71 34” 20” 9” 58 003-304650-004 2

1.6 5,500 480 1 3.3 CVEP-C-16-41 34” 20” 9” 58 003-304650-003 2

1.6 5,500 480 3 1.9 CVEP-C-16-43 34” 20” 9” 58 003-304650-009 2

1.6 5,500 575 3 1.6 CVEP-C-16-63 34” 20” 9” 58 003-304650-010 2

3.2 11,000 208 1 15.4 CVEP-C-32-81 58” 20” 9” 94 003-304650-023 2

3.2 11,000 208 3 8.9 CVEP-C-32-83 58” 20” 9” 94 003-304650-026 2

3.2 11,000 240 1 13.3 CVEP-C-32-21 58” 20” 9” 94 003-304650-093 2

3.2 11,000 240 3 7.7 CVEP-C-32-23 58” 20” 9” 94 003-304650-027 2

3.2 11,000 277 1 11.6 CVEP-C-32-71 58” 20” 9” 94 003-304650-025 2

3.2 11,000 480 1 6.7 CVEP-C-32-41 58” 20” 9” 94 003-304650-093 2

3.2 11,000 480 3 3.8 CVEP-C-32-43 58” 20” 9” 94 003-304650-030 2

3.2 11,000 575 3 3.2 CVEP-C-32-63 58” 20” 9” 94 003-304650-031 2

4.0 13,600 208 1 19.2 CVEP-C-40-81 70” 20” 9” 112 003-304650-045 2

4.0 13,600 208 3 11.1 CVEP-C-40-83 70” 20” 9” 112 003-304650-048 2

4.0 13,600 240 1 16.7 CVEP-C-40-21 70” 20” 9” 112 003-304650-046 2

4.0 13,600 240 3 9.6 CVEP-C-40-23 70” 20” 9” 112 003-304650-049 2

4.0 13,600 277 1 14.4 CVEP-C-40-71 70” 20” 9” 112 003-304650-047 2

4.0 13,600 480 1 8.3 CVEP-C-40-41 70” 20” 9” 112 003-304650-046 2

4.0 13,600 480 3 4.8 CVEP-C-40-43 70” 20” 9” 112 003-304650-052 2

4.0 13,600 575 3 7.0 CVEP-C-40-63 70” 20” 9” 112 003-304650-053 2

G16081

G16083

G16041

G16043

G16071

G160481

G160483

G16063

G32081

G32083

G32041

G32043

G32071

G320481

G320483

G32063

G40081

G40083

G40041

G40043

G40071

G400481

G400483

G40063

Temperature Rating T2A 536˚F (280˚C)

kW BTU Volts Phase Amps Model Width A Height B Depth C Wt. (Lbs.) Element P/N Qty.

1.8/3.6 6,150/12,300 208 1 8.7/17.3 CVEP-C-18/36-81 34” 20” 9” 46/58 003-304650-034

1.8/3.6 6,150/12,300 208 3 5.0/10.0 CVEP-C-18/36-83 34” 20” 9” 46/58 003-304650-038

1.8/3.6 6,150/12,300 240 1 7.5/15.0 CVEP-C-18/36-21 34” 20” 9” 46/58 003-304650-098

1.8/3.6 6,150/12,300 240 3 4.3/8.7 CVEP-C-18/36-23 34” 20” 9” 46/58 003-304650-039

1.8/3.6 6,150/12,300 277 1 6.5/13.0 CVEP-C-18/36-71 34” 20” 9” 46/58 003-304650-036

1.8/3.6 6,150/12,300 480 1 3.8/7.5 CVEP-C-18/36-41 34” 20” 9” 46/58 003-304650-037/-098

1.8/3.6 6,150/12,300 480 3 2.2/4.3 CVEP-C-18/36-43 34” 20” 9” 46/58 003-304650-042

1.8/3.6 6,150/12,300 575 3 1.8/3.6 CVEP-C-18/36-63 34” 20” 9” 46/58 003-304650-043

7.6 25,930 208 1 36.5 CVEP-C-76-81 58” 20” 9” 94 003-304650-055 2

7.6 25,930 208 3 21.1 CVEP-C-76-83 58” 20” 9” 94 003-304650-058 2

7.6 25,930 240 1 31.7 CVEP-C-76-21 58” 20” 9” 94 003-304650-099 2

7.6 25,930 240 3 18.3 CVEP-C-76-23 58” 20” 9” 94 003-304650-059 2

7.6 25,930 277 1 27.4 CVEP-C-76-71 58” 20” 9” 94 003-304650-057 2

7.6 25,930 480 1 15.8 CVEP-C-76-41 58” 20” 9” 94 003-304650-056 2

7.6 25,930 480 3 9.1 CVEP-C-76-43 58” 20” 9” 94 003-304650-062 2

7.6 25,930 575 3 7.6 CVEP-C-76-63 58” 20” 9” 94 003-304650-063 2

4.5/9.0 15,350/30,700 208 1 21.6/43.3 CVEP-C-45/90-81 70” 20” 9” 87/112 003-304650-065

4.5/9.0 15,350/30,700 208 3 12.5/25.0 CVEP-C-45/90-83 70” 20” 9” 87/112 003-304650-069

4.5/9.0 15,350/30,700 240 1 18.8/37.5 CVEP-C-45/90-21 70” 20” 9” 87/112 003-304650-100

4.5/9.0 15,350/30,700 240 3 10.8/21.7 CVEP-C-45/90-23 70” 20” 9” 87/112 003-304650-070

4.5/9.0 15,350/30,700 277 1 16.2/32.5 CVEP-C-45/90-71 70” 20” 9” 87/112 003-304650-067

4.5/9.0 15,350/30,700 480 1 9.4/18.8 CVEP-C-45/90-41 70” 20” 9” 87/112 003-304650-068/-070

4.5/9.0 15,350/30,700 480 3 5.4/10.8 CVEP-C-45/90-43 70” 20” 9” 87/112 003-304650-073

4.5/9.0 15,350/30,700 575 3 4.5/9.0 CVEP-C-45/90-63 70” 20” 9” 87/112 003-304650-074

G(180)36081
G(180)36083
G(180)36041
G(180)36043
G(180)36071
G(180)360481
G(180)360483
G(180)36063

G76081
G76083
G76041
G76043
G76071
G760481
G760483
G76063

G(450)90081
G(450)90083
G(450)90041
G(450)90043
G(450)90071
G(450)900481
G(450)900483
G(450)90063

1 or 2
1 or 2
1 or 2
1 or 2
1 or 2
1 or 2
1 or 2
1 or 2

1 or 2
1 or 2
1 or 2
1 or 2
1 or 2
1 or 2
1 or 2
1 or 2

6

REPLACEMENT PARTS

Model Front Rear Right Left Element
Any Voltage Cover Assembly Cover Assembly Side Panel Side Panel Support Bracket

1.6, 1.8, 3.6 KW 207-304644-101 207-304644-001 207-304644-201 304-304644-301 027-304646-001

3.2, 7.6 KW 207-304644-102 207-304644-002 207-304644-201 304-304644-301 027-304646-001

4.0, 4.5, 9.0 KW 207-304644-103 207-304644-003 207-304644-201 304-304644-301 027-304646-001

kW Volts Phase Control Stat

G

Control Combination

Code Contactor Transformer

Coil Secondary

None None

CX 24 Volt 24 Volt

CX* 120 Volt 120 Volt

Contactor

Coil Voltage 30 Amp 50 Amp

24V 072-304551-001 072-303180-002

120V 072-303180-007 072-304551-008

Code Phase

1 1Ø
3 3Ø

B

Code Thermostat

None

TB 300-049197-003

T 300-113075-002

Primary Secondary
Voltage Voltage

208/240/480 24 315-304252-002
208/240/480 120 315-304252-001

277 24 315-304252-004
575 24 315-304252-005

277/575 120 315-304252-003

Transformer

7

LIMITED WARRANTY
All products manufactured by Marley Engineered Products are warranted against defects in workmanship and materials for one year
from date of installation, except heating elements which are warranted against defects in workmanship and materials for five years
from date of installation. This warranty does not apply to damage from accident, misuse, or alteration; nor where the connected volt­age is more than 5% above the nameplate voltage; nor to equipment improperly installed or wired or maintained in violation of the
product’s installation instructions. All claims for warranty work must be accompanied by proof of the date of installation.

The customer shall be responsible for all costs incurred in the removal or reinstallation of products, including labor costs, and ship­ping costs incurred to return products to Marley Engineered Products Service Center.Within the limitations of this warranty, inoper­ative units should be returned to the nearest Marley authorized service center or the Marley Engineered Products Service Center,
and we will repair or replace, at our option, at no charge to you with return freight paid by Marley. It is agreed that such repair or
replacement is the exclusive remedy available from Marley Engineered Products.

THE ABOVE WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED. AND ALL IMPLIED WAR­RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE AFORESAID
EXPRESSED WARRANTIES ARE HEREBY DISCLAIMED AND EXCLUDED FROM THIS AGREEMENT. MARLEY ENGINEERED
PRODUCTS SHALL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES ARISING WITH RESPECT TO THE PRODUCT,
WHETHER BASED UPON NEGLIGENCE, TORT, STRICT LIABILITY, OR CONTRACT.

Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may
not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

For the address of your nearest authorized service center, contact Marley Engineered Products in Bennettsville, SC, at 1-800-642-

4328. Merchandise returned to the factory must be accompanied by a return authorization and service identification tag, both avail­able from Marley Engineered Products. When requesting return authorization, include all catalog numbers shown on the products.

HOW TO OBTAIN WARRANTY SERVICE AND
WARRANTY PARTS PLUS GENERAL INFORMATION

1. Warranty Service or Parts

2. Purchase Replacement Parts

3. General Product Information

Note:

When obtaining service always have the following:

1. Model number of the product

2. Date of manufacture

3. Part number or description

1-800-642-4328
1-800-654-3545
www.marleymep.com

8

470 Beauty Spot Rd. East
Bennettsville, SC 29512 USA

5200-2472-002

ECR 39003

02/11