Ruffneck CX1 ProVector Series Guide

CX1 - 120 1 60 - 012 - T2A IIB - T
Model
Series
1st Generation
Heater Voltage
120 V, 208 V, 240V,
277 V, 380V,
400 V, 415 V,
480 V, 600 V Phase
1, 3
Hertz
50, 60
T – Built-in room thermostat.
Add ‘T’ for T-stat.
A – Stainless steel cabinet
Model Coding
0075 - 0.75 kW
0083 - 0.83 kW
009 - 0.90 kW
0113 - 1.13 kW
012 - 1.2 kW
0125 - 1.25 kW
0135 - 1.35 kW
018 - 1.8 kW
0226 - 2.26 kW
025 - 2.5 kW
0269 - 2.69 kW
0301 - 3.01 kW
0313 - 3.13 kW
0333 - 3.33 kW
0347 - 3.47 kW
0359 - 3.59 kW
036 - 3.6 kW
0476 - 4.76 kW
048 - 4.8 kW
050 - 5.0kW
0528 - 5.28 kW
0568 - 5.68 kW
0626 - 6.26 kW
0694 - 6.94 kW
0747 - 7.47 kW
076 - 7.6 kW
100 - 10.0 kW
Heater Kilowatts
T-Code
T2A - 536ºF (280ºC)
T3 - 392ºF (200ºC)
Hazardous Location
IIB, IIC
Ruffneck™ and ProVector®are registered trademarks of Themon Heating Systems, Inc.
Copyright © 2018. All rights reserved.
(with built-in thermostat)
Class I, Div. 1 & 2, Groups A, B, C & D
Class I, Zones 1 & 2, Groups IIA, IIB, IIC
Temperature Code T2A 536°F (280°C), T3 392°F (200°C)
Approved Locations
Electric convection air heaters are cULus listed for the following hazardous locations:
(without built-in thermostat)
Class I, Div. 1 & 2, Groups A, B, C & D
Class I, Zones 1 & 2, Groups IIA, IIB, IIC
Temperature Code T2A 536°F (280°C),
T3 392°F (200°C)
For details of hazardous locations with potential for explosion, refer to the Canadian Electrical Code, Part 1, Section 18 or
National Electrical Code Articles 500 - 516.
Reminder: This nomenclature illustration is intended primarily to explain how a product part number is dened.
Not all voltages and/or wattage combinations are available. Please consult the Performance Data chart(s) for product availability.
ISO 9001
Part No. 6348.Rev.18.04 Nov 2018 Printed in Canada
CX1 ProVector ® Series
Electric Convection Air Heaters for Hazardous Locations
Installation, Operation, & Maintenance Instructions
WARNING! Read all important information notices on page 3. Please adhere to instruction published in this manual.
Failure to do so may be dangerous and may void certain provisions of your warranty.

TABLE OF CONTENTS
A. Heater Maintenance Checklist 3
A.1 Periodic ..................................................................................................................3
A.2 Annual....................................................................................................................3
B. Important Notices 4
C. Installation 4
C.1 Mechanical.............................................................................................................4
C.2 Electrical ................................................................................................................7
D. Specifications 8
E. Parts Diagram 9
F. Parts List 10
G. Repair & Replacement 11
G.1 Finned Tube/Element Assembly ............................................................................11
G.2 Cabinet Panels and Brackets...............................................................................11
H. CX1 Technical Data 12
H.1 1-Phase................................................................................................................12
H.2 3-Phase ...............................................................................................................14

33
Heater Maintenance Checklist
A. HEATER MAINTENANCE CHECKLIST
WARNING
WARNING. Disconnect heater from the power supply before opening enclosures or servicing heater.
Lock the switch in the “OFF” (open) position and/or tag the switch to prevent unexpected power application. For
heaters marked "IIC", ensure to loosen the setscrew before removing the cover.
This heater should only be serviced by personnel with heating and hazardous location equipment experience.
Heater Model
Serial Number
Comments
Date of Maintenance
Maintenance Done By
A.1 Periodic
• Clean
Finned Tubes
Cabinet top and below unit
Remove dust using compressed air. Do not spray
with water or solvents. Do not immerse in water
orsolvents
• Check
All explosion-proof covers for tightness.
A.2 Annual
• Mechanical Check
Check all enclosures. Inside of enclosures
must be clean, dry, and free of foreign materials.
Enclosure joints are metal to metal. Do not use
gasket material or sealant injoints.
Check the tightness of all hardware. All nuts and
bolts must be tight.
Turn heater on for a minimum of ve minutes.
Check for warm air exiting heater through top vents.
• Electrical Check
Check all terminal connections and conductors.
Tighten loose connections. Conductors with
damaged insulation must be replaced.
Check all explosion-proof conduits. Replace
damaged conduits, unions, and plugs. Ensure 5
turns of engagement on all threaded connections.
(before and as required during heating season) (before heating season)
For assistance, please call
Toll Free: 1-800-661-8529 (24 hrs)
U.S. & Canada
Photocopy
this page
for reuse.

4
4
Important Notices / Installation
B. IMPORTANT NOTICES
WARNING
WARNING. Read and adhere to the following
installation instructions. FAILURE TO DO SO MAY
RESULT IN SEVERE OR FATAL INJURY AND/OR
POSSIBLE VOIDING OF THE WARRANTY.
1. Read and follow all instructions in this manual.
2. Heater is to be used only in atmospheres having an
ignition temperature higher than the heater’s maximum
rated operating temperature, as shown on the heater data
plate. Refer to applicable electrical codes for additional
information.
3. Heater to be used only in the hazardous locations
indicated on the heater data plate.
4. Heater is for dry, indoor use only. Do not immerse in water.
Do not store or use in areas exposed to rain or snow.
5. Maximum ambient operating temperature 104°F (40°C).
6. Heater is to be connected and serviced only by a qualied
electrician experienced with hazardous location equipment.
7. Installation and wiring of the heater must adhere to all
applicable codes.
8. Before opening any enclosures, disconnect the
heater from the power supply. Lock the switch in the
“OFF” (open) position and/or tag the switch to prevent
unexpected power application.
9. External surfaces get hot and can cause burns with
prolonged contact.
10. Operate the heater only while it is permanently mounted
in an upright position. Refer to the C.1 Mechanical,
page4 for details.
11. Heater must be kept clean. When operating in a dirty
environment, regularly clean the nned tubes, top vents,
and keep bottom opening free of obstructions. Follow the
recommended maintenance procedures. Refer Section A.
Heater Maintenance Checklist, page3 for details.
12. Do not operate the heater in atmosphere corrosive to steel
or aluminum.
13. Use factory approved replacement parts only.
14. Conduit seals are not required in the heater’s factory
installed conduits.
15. A conduit seal is required within 6" (153mm) of eldentries.
16. If there are any questions or concerns regarding the heater,
contact the factory. Refer to the last page of this manual
for details.
C. INSTALLATION
All applicable codes must be adhered to. For optimum heating, the
heater should be installed as follows:
C.1 Mechanical
1. Location
1.1 The air discharge is not directed at a thermostat.
1.2 The air discharge is across areas of heat loss, such
as windows.
1.3 If equipment freeze protection is of importance,
locate heater as close to equipment as possible.
2. Mounting
2.1 Heater must be mounted level on a vertical surface
using the factory supplied mounting brackets such
that there are no obstructions to impede air inlet or
discharge.
2.2 The mounting surface must be strong enough to:
–Support the heater’s weight, refer to Section D.
Specications, page8.
–Withstand abusive situations such as transportable
installations of the heater.
2.3 Secure mounting brackets to vertical surface with the
top mounting hole 1.5" (38mm) below the desired top
surface height (Figure1, page4). Refer to Figure3,
page5, Figure4 and Figure5, page4 for physical
dimensions and Figure5, page6 for required
installation clearances. Mounting brackets are to be
spaced to match the slots in the rear panel of heater
cabinet.
2.4 After mounting brackets are secured, tilt the heater
and lower it onto the top tabs of the mounting
bracket such that the tabs go into the mounting
slots on the rear panel of the heater cabinet (Figure2,
page5).
1.5"
(38.0mm)
Figure1

55
Installation
2.5 Carefully swing the bottom of the heater into the
mounting brackets so that it is resting on the bottom
tab (Figure2, page5).
2.6 Insert the securing screw through the bottom
mounting bracket tab and into the cabinet to keep
the heater from dislodging from the mounting
bracket (Figure2, page5).
2.7 CAUTION: Use fasteners with yield stress greater
than or equal to 58 ksi (400 MPa).
Mounting bracket
Securing screw
Bottom tab detail
Top tab detail
Figure2
Group B, C, D, Heaters with Defender®Housing
HeaterkW Rating
'A' Dimension 'B'
Dimension
'C' Dimension
w/o Extension w/ Extension w/o
Extension w/ Extension
in mm in mm in mm in mm in mm
0.75 to 2.69 & 3.6 (T2A) 36.9 938 39.0 991 31.34 796
5.6 142 7.7 195
3.01 to 3.59, 3.6 (T3) & 4.8 55.0 1398 57.1 1451 49.45 1256
4.76, 5.28 to 7.6* 65.1 1653 67.2 1706 59.49 1511
3.13, 3.47, 3.74, 5.0, 6.26, 6.94,
7.47 & 10.0 77.4 1965 79.4 2018 71.78 1823
* Except 7.6kW, 208, 3Ø and 10kW, 208V, & 277V, 3Ø units
** 1Ø Thermostat units require extension
Figure3 – Physical Dimensions

6
6
Installation
Group A,B,C,D Heater with x-Max®Housing
HeaterkW Rating
'D' Dimension
'B' Dimension
'E' Dimension
1Ø
w/o
Extension
1Ø*
w/
Extension
3Ø Units w/o
Extension
w/
Extension 3Ø Units
in mm in mm in mm in mm in mm in mm in mm
0.75 to 2.69 & 3.6
(T2A) 37.6 954 39.6 1007 38.3 973 31.34 796
6.2 158 8.3 211 7.0 177
3.01 to 3.59, 3.6 (T3)
& 4.8 55.7 1414 57.8 1467 56.4 1433 49.45 1256
4.76, 5.28 to 7.6* 65.7 1669 67.8 1722 66.5 1688 59.49 1511
3.13, 3.47, 3.74, 5.0,
6.26, 6.94, 7.47 &
10.0
78.0 1981 80.1 2034 78.7 2000 71.78 1823
* 1ØThermostat units require extension
Figure4 – Physical Dimensions
12" (305mm)
Minimum 0.375" (9.5mm)
Required for ease of installation
Minimum 18"
(457mm)
48" (1219mm)
Required for ease of installation and
servicing
Minimum 8.0"
(203mm)
Minimum
0.375"
(9.5mm)
Floor
Wall
Figure5 – Installation Clearances

77
Installation
C.2 Electrical
WARNING
WARNING. Disconnect the power supply before
installation of the heater.
Lock the switch in the “OFF” (open) position and/or tag
the switch to prevent unexpected power application.
For heaters marked "IIC", insure to loosen the setscrew
before removing the cover. Installation and wiring of the
heater must adhere to all applicable codes.
1. General
1.1 Use only copper conductors and approved
explosion-proof wiring methods during installation.
Refer to the Section H.1 1-Phase, page12 and
Section H.2 3-Phase, page14, or heater data
plate for the voltage, amperage and wattage ratings
when sizing for the appropriate conductors. All
supply conductors should be rated for operating at
temperatures up to 194°F (90°C).
1.2 Supply voltage must be within 10% of the data plate
rating. External over-current protection is required
and must meet data plate ratings for voltage,
amperage and frequency.
2. Field Wiring
Heater has been supplied with an enclosure that has a
3/4"NPT or 1" NPT threaded opening to accommodate
the line conductors (see Figure3, page5 to for
connection details). Use wire connectors rated for
minimum 194°F (90°C).
NOTE: If remote thermostats other than the factory supplied are
used, ensure that they will not allow the room temperature
to exceed ambient temperature limitations of the heater
(104°F/40°C) and are suitable for the area’s hazardous
atmosphere classication. When using any control devices,
ensure that the voltage and amperage ratings match
the heater’s electrical ratings. If not, a contactor may
berequired.
3. Final Inspection
3.1 Before application of electrical power:
–Check that all connections are secured and comply
with the wiring diagram (see Figure 6 and Figure 7,
page7 and applicable code requirements,
–Conrm that the supply voltage and phase is
compatible with the data plate specications,
–Remove any foreign objects from the heater, and
–Ensure all external ttings and enclosure covers
aresecured.
Element
Room
Thermostat
L1*
L2
Element
* On 120V units
L1 represents
neutral
Figure 6 – Wiring Diagram for remote mount and built-in room
thermostats (1Ø units)
Elements
DPST Room
Thermostat
L1
L2
L3
GND
Figure 7 – Wiring Diagram for remote mount and built-in room
thermostats (3Ø units)

8
8
Specications
D. SPECIFICATIONS
NominalkW
0.75 - 2.69 & 3.6
(T2A)
3.01, 3.33, 3.59,
3.6 (T3), 4.8 4.76, 5.28, 5.68, 7.6 3.13, 3.47, 3.74, 5.0, 6.26, 6.94, 7.47, 10.0
Cabinet Length in 31.3 49.4 59.5 71.8
mm 796 1256 1511 1823
Net Weight lbs 55.3 80.7 92.8 117
kg 25.1 36.6 42.1 53.2
Shipping Weight lbs 65 95 105 142
kg 30 44 47.6 65.5
Specications for Models
1. Hazardous
Locations
Without Built-in T'Stat*
Class I, Div. 1 & 2, Groups B, C, & D; Zones 1 & 2, Groups IIA, IIB + H2 (Defender®Housing)
or, Class I, Div. 1 & 2, Groups A, B, C, & D, Groups IIA, IIB, IIC (x-Ma x®)
With Built-in T'Stat*
Class I, Div. 1 & 2, Groups C, & D, Zones 1 & 2, Groups IIA, IIB (Defender®Housing)
or, Class I, Div. 1 & 2, Groups A, B, C, D, Zones 1 & 2, Groups IIA, IIB. IIC ( x-Max®housing)
2. Enclosures Defender® housing is cast aluminum with bolt on cover, Groups IIB. x-Max®housing
is extruded aluminum with two screwed on covers. The x-Max®housing offers IP55
moisture ingress protection, Groups IIC.
For dry indoor use only.
Do not immerse in water. Do not store or use in areas exposed to rain or snow.
3. Mounting
Brackets
Two 14 Ga. (0.075 in) (1.90mm) galvanized steel.
4. Heating
Elements
Incoloy®sheathed elements.
5. Cabinet
Material
14 Ga. steel. Rear panel is galvanized. Front and side panels are baked green-grey epoxy
powder coated with five-stage pretreatment, including iron phosphate.
6. Temperature
Code Rating
T2A 536°F (280°C), T3 392°F (200°C)
7. Temperature
Limitations
Operational: -49°F to 104°F
Storage: 49°F to 176°F
*Hazardous location ratings are dependant on the junction box used.
Please consult a customer service representative or the unit data plate for actual location ratings.

IIB, Built-in T'stat Option IIB + H2 Without T'stat
Option
IIC, Built-in T'stat
Option
IIC, Without
Built-in T'stat Option
Conduit Detail IIB Built-in Wiring IIB+H2Without
T'stat Wiring
IIC Built-in T'stat Wiring IIC Without T'stat Wiring
1-Phase Wiring
Connect to "common" and "norm
closed" terminals of built-in T'stat.
GND Wire
3-Phase Wiring
Conduit Detail IIB+H2Without
T'stat Wiring
IIC Without T'stat Wiring IIC Built-in T'stat Wiring
99
Parts Diagram
E. PARTS DIAGRAM
General Assembly Screw 16
4
1
3
19
18
14
9
8
7
5
2
11
19
13
9
15
10
2 PLCS
6
8
2 PLCS
2 PLCS
9
12
20
99
19
16
17
2 PLCS
15 16
2 PLCS
2 PLCS
17 2 PLCS
15
GND Wire
GND Wire
18
15 3 PLCS 16
GND Wire
3 PLCS
15 GND Wire
C1
C2
See t'stat options
21

10
10
Parts Diagram
Please have model and serial number available before calling.
Item
No. Description
Cabinet Length
31.5" (796mm) 49.4" (1256mm) 59.5" (1511mm) 71.78" (1823mm)
Part No. Qty. Part No. Qty. Part No. Qty. Part No. Qty.
1Panel, Front 6488 16493 16490 112305 1
2Panel, Back 6487 16494 16489 112306 1
3Panel, Right - 1Ø units 6491 16491 16491 16491 1
Panel, Right - 3Ø units 12304 112304 112304 112304 1
4Panel, Left 6492 16492 16492 16492 1
5Bracket, Finned Tube - 1Ø units 6485 16485 16485 16485 1
Bracket, Finned Tube - 3Ø units 12303 112303 112303 112303 1
6 Kit, Wall Mounting 6602 16602 16602 16602 1
7 Finned Tube Assy c/w Element * 2 * 2 * 2 * 2
8Nut, 3/4 Alum. Lock - 1Ø units 6449 46449 46449 46449 4
Nut, 1" NPT Lock - 3Ø units 12676 412676 412676 412676 4
9
Union, 3/4 NPT Male/Female - 1Ø units 6506 46506 46506 46506 4
Union, 1" NPT Female/Female - 3Ø units 12677 212677 212677 212677 2
Union, 1" NPT Male/Female - 3Ø units 12787 212787 212787 212787 2
10 Conduit, Element 6497 16497 16497 16497 1
11 Plug, 3/4 Ex-Proof 1443 21443 21443 21443 2
12 Kit, Group B, (IIB +H2) Enclosure 6604 16604 16604 16604 1
13 Enclosure, Convector 6211 16211 16211 16211 1
14 Kit, Built-in XCT T’Stat - 1Ø units 6603 16603 16603 16603 1
15 Wire Connector, 302°F (150°C) **
16 Screw, 10-24 x 1/2 in. Thd Ct 4972 20 4972 21 4972 22 4972 24
17 Fork Connector, 12-10GA #10 2088 22088 22088 22088 2
18 Wire Connector, 572°F (300°C) 6529 +6529 +6529 +6529 +
19 Tube Extension - 1Ø units 7202 27202 27202 27202 2
20 Kit, Built-in XT T'Stat - 1Ø units 11773 111773 111773 111773 1
21 Kit, Built-in XT T'Stat - 3Ø units 13728 113728 113728 113728 1
22 Reducer Bushing - 3Ø units 12679 212679 212679 212679 2
23 Nipple - 3Ø units 12678 212678 212678 212678 2
24 Reducer, 3/4 x 1" Male/Female 12867 212867 212867 212867 2
F. PARTS LIST
Notes
* Contact factory for replacement nned tube kits.
** Customer supplied. Quantity varies: 1 for built-in T'stat option; 2 for remote T'stat option.
*** 7.6kW, 208V, 3Ø and 10kW, 208V, 240V & 277V, 3Ø only
+ Quantity varies: 1 for 1Ø, 2 for 3Ø