Thermon Norseman XB Series Guide

Part No. 12430.Rev.1 June 2021 Printed in Canada
XB Series
CE Explosion-Proof Convection Panel Heater
Installation, Operation, & Maintenance Instructions
Special Notes
The following special notices highlight important
information in the installation and maintenance sections.
Each serves a special purpose and is displayed in the format
shown:
This symbol indicates a potentially hazardous situation,
which, if not avoided, can result in personal injury or
damage to the equipment.
This symbol indicates a potentially hazardous
situation, which, if not avoided, may be a shock
hazard.
This symbol indicates an imminently hazardous
situation, which, if not avoided, could result in death or
serious injury.
CAUTION
CAUTION
WARNING
ISO 9001
Depening on the particular model ordered, the heater is suitable for the following
areas:
II 2G EX db IIC T3 or T4, Gb
-60°C ≤ Tamb ≤ 40°C

2
TABLE OF CONTENTS
A. Pre-installation 3
B. Installation 3
B.1 General Requiprements.......................................................................................................................3
B.2 Wall Mounting ...........................................................................................................................................4
B.3 Floor Mounting .........................................................................................................................................4
B.4 Thermostat Installation.......................................................................................................................5
C. Wiring 5
D. Replacement Thermostats 6
E. Start-up 6
F. Maintenance 7
G. Spare Parts 7

3
Pre-installation
A. PRE-INSTALLATION
1. Initially, inspect the heater for possible damage due to
shipping and handling. Claims for shipping damages
shall be placed with the carrier.
2. Check the heater nameplate to ensure that the heater
area classication and temperature code are suitable
for the hazardous area classication. For details of
hazardous locations with potential for explosion, refer
to the local or national electrical code.
3. Check to ensure that the heater voltage is the same
as the supply voltage.
4. The heater must be installed by qualied personnel
in strict compliance with national and local electrical
codes.
WARNING
WARNING. Do not connect the heater to an
electrical supply voltage other than that shown on
the product nameplate.
B. INSTALLATION
B.1 General Requiprements
1. Norseman™ XB CE heaters are approved for wall
or oor mounting with the terminal housing at the
bottom. Ensure that is the wall sufciently strong to
support the heater which, depending on the model,
could weigh up to 45 kg
(100 lbs). Otherwise use the brackets supplied to
stand the heater on the oor.
2. Do not recess the Norseman™ XB CE heater into the
wall. Use of the brackets supplied will ensure that the
minimum spacing from the wall of 95 mm (3.75") is
maintained.
3. If more than one heater is being installed, maintain at
least 76 mm (3") between adjacent heater extrusions.
NEVER INSTALL ONE HEATER ABOVE THE OTHER.
4. The Norseman™ XB CE heater relies on natural
convection and “black heat” radiation to transfer
heat to the surroundings. Try to maintain a 300 mm
(12") clearance and NEVER LESS THAN 150 mm (6")
clearance in front of and at the sides of the heater.
NOTE: Use guard rails in front of the heater if there is a
possibility that moving equipment could come in
contact with the heater.
Figure1 – Mounting Diagram
Table 1 – CE Heater Dimensions
Unit
B F G M N L
mm in mm in in mm in mm in mm in mm
XB1 184 7.250 432 17.000 416 16.375 - - - - 300 11.875
XB2 410 16.125 600 23.625 584 23.000 181 7.125 210 8.250 471 18.500
772 30.375 756 29.750 640 15.250
XB3 635 25.000 600 23.625 584 23.000 349 13.750 435 17.125 471 18.500
772 30.375 756 29.750 640 15.250

4
Installation
B.2 Wall Mounting
1. Install heater with the supplied hardware in
accordance with the gures and instructions below.
Step 1: Secure wall and stabilizing brackets to mounting
surface (Figure2, page4).
Figure2 – Install mounting bracket
Step 2: Position heater face down on oor with terminal box
towards mounting brackets. Angle heater such that
the terminal box rests on bottom of wall bracket. Lift
top of heater and align with top stabilizing brackets.
Secure with supplied M6 x 1.0 hex bolts and lock
washers (Figure3, page4).
Figure3 – Attach heater to oor and wall brackets
Step 3: Secure bottom of heater to wall mounting brackets
with supplied M6 x 1.0 hex bolts and lock washers
(Figure 4).
Figure4 – Attach heater to mounting brackets
B.3 Floor Mounting
Step 1: Position heater face down on the oor with terminal
box towards the wall (Figure5, page4).
Figure5 – Floor mounting diagram
Step 2: Fasten top stabilizing bracket(s) and oor mounting
bracket(s) to the unit. Floor mounting brackets may
be mounted in one of three orientations (Figure6,
page4).
Figure6 – Install mounting bracket to heater
Step 3: Lift top of unit and position heater vertically against
the wall. Secure stabilizing and oor mounting
brackets to the mounting surfaces (Figure7,
page4).
Figure7 – Attach heater to oor and wall
WARNING
WARNING. Never install one heater above the other.
To ensure safe operation, heater must be installed,
as shown in Figure4 and Figure7.
WARNING
WARNING. Improper orientation of the heater
could affect the safe and reliable operation of the
heater.

5
Installation \ Wiring
B.4 Thermostat Installation
1. FACTORY INSTALLED - For shipping purposes the
thermostat well (located at back of unit) has not been
installed.
2. Position thermostat bulb perpendicular to housing
being careful not to kink the capillary. Slide well over
bulb and screw into place. Make sure that a minimum
5 threads engagement is achieved
FIELD INSTALLED KIT - Most NorsemanTM XB CE units
are suitable for eld installation of a thermostat kit
with the operator shaft hole on the front side of the
unit and plugged with a socket head cap screw. If a
thermostat is to be eld installed, check to verify that
you have been supplied with the correct thermostat
kit. Single phase heaters use a single pole thermostat
as supplied in kit number XTKW04481CE. Three
phase heaters use a double pole thermostat as
supplied in kit number XTKW04483CE. Follow the
instructions supplied with the kit.
C. WIRING
1. Whenever hazardous materials are present, ensure
that the terminal housing covers are secure before
powering the heater.
2. Use supply wires suitable for 105°C (221°F).
3. Use local approved ameproof entry devices as
required by the code for hazardous locations.
NOTE: The reference pressures are as follows:
XB1 : 11.1 BAR
XB2 & XB3 : 52.8 BAR
Use only ameproof entry devices suitable for
reference pressure.
4. To provide maximum protection each NorsemanTM
XB CE heater should be fused individually using the
nearest standard fuse size which is not less than 120%
of the expected line current.
5. All heaters come factory prewired and ready for direct
connection to the power supply leads.
5.1 Connect the power leads to terminals marked L
and N for single phase and L1, L2 & L3 for three
phase heaters as shown in Figure8.
5.2 Connect the ground wire to the ground
connection located in the heater terminal
housing.
Figure8 – Wiring diagrams
L
N
L
N
L
N

6
Replacement Thermostats / Start-up
D. REPLACEMENT THERMOSTATS
Part No.
Wiring Diagram (Figure8)
1Ø 3Ø
XB3-6300T3
Fig. 3 Fig 4
XB3-6276T3
XB3-6252T3
XB3-4250T3
XB3-4230T3
XB3-6225T3B
XB3-4210T3
XB3-6207T3B
XB3-6189T3B
XB3-4150T3B
XB3-4138T3B
XB3-4126T3B
XB2-4100T3B
Fig. 2 -
XB2-4092T3B
XB2-4084T3B
XB2-6085T4A
XB2- 6078T4A
XB2- 6071T4A
XB1-3047T3B
Fig. 1 -XB1-3043T3B
XB1-3040T3B
CAUTION
CAUTION. Use approved conduit and conduit seals
as required by hazardous location standards.
E. START-UP
For heaters with a tamper-proof thermostat, to set
temperature, disconnect the power and remove the socket
head cap screw. Set the thermostat to the desired room
temperature with a screw driver and replace cap screw.
1. For heaters with an externally adjustable thermostat,
set thermostat to desired temperature by adjusting
the dial.
NOTE: The thermostat temperature range is -18° to 40°C (0°
to 100°F) with an operating differential of 3 to 4°C (5
to 7°F).
2. Install the terminal box cover and tighten securely.
3. Check to ensure that all plugs, screws, and covers are
securely in place.
4. Check associated electrical equipment.
5. Check that all wall/oor mounting bracket
connections are tight.
6. Turn on the supply power.
WARNING
WARNING. To prevent unsafe operation of the
heater do no exceed the maximum allowable
ambient operating temperature of 40°C (104°F)
WARNING
WARNING. Whenever hazardous materials are
present, ensure that the terminal housing covers,
plug, etc., are secured (but not over-tightened)
before energizing
the heater.
CAUTION
CAUTION. Use supply wires suitable for 105°C
(221°F). Supply wires are to be fused with
appropriately sized HRC fusing.
CAUTION
CAUTION. All circuits must be in the open position
before removing junction or terminal box covers.
CAUTION
CAUTION. Ensure that no power is connected to
the equipment prior to making any connections.

7
Maintenance \ Spare Parts
Directive 2003/108/EC ammendment to the Directive
2002/96/EC of the European Parliament and of the Council on
Waste Electrical and Electronic Equipment (WEEE).
1. The equipment that you bought is WEEE marked and
has required the extraction and use of natural resources
for its production. It may contain substances that could
impact health and the environment. As such it is a
requirement not to dispose of WEEE marked equipment
as unsorted municipal waste and to collect such WEEE
marked equipment separately.
2. In order to avoid the dissemination of those substances in
our environment and to diminish the pressure on natural
resources, we encourage you to use the appropriate take-
back systems in your area. Those systems will reuse or
recycle most if not all of the materials of your equipment
in a sound way.
3. The crossed-out wheeled bin symbol on this equipment
invites you to use those systems.
4. If you need more information on collection, reuse and
recycling systems in your area, please contact your local
or regional waste management administration.
F. MAINTENANCE
1. Periodically inspect the heater installation to ensure
that all connections, ttings, plugs, screws, covers, etc.
are tight and free of corrosion.
2. Check the extrusions of the heater for dust and
debris. A blast of compressed air is recommended
for cleaning the heat sink. If air is not available,
disconnect the power supply to the heater and when
cool, wipe it down with a damp cloth or soft brush.
Remove wire guards prior to cleaning.
CAUTION
CAUTION. Disconnect power from the heater
before performing any maintenance. Failure to do
so can result in property damage, injury or death.
CAUTION
CAUTION. Do not use water to clean heater.
3. The heat sink is anodized to ensure that the
maximum area code temperature is not exceeded.
After an extended period of use or in extremely harsh
environments the anodization may wear away leaving
bare surfaces. For continued safe operation, these
surfaces must be repainted.
4. Except for thermostat replacement, eld repair of the
heater shall not be normally undertaken. In the event
that the heater must be repaired, contact the factory
for a return authorization number.
G. SPARE PARTS
Table 2 – Replacement Thermostats
Voltage Thermostat Part No.
One Phase Heaters XTKW04481CE
Three Phase Heaters XTKW04483CE

Oakville
1-800-410-3131
1-905-829-4422
F 905-829-4430
Orillia
1-877-325-3473
1-705-325-3473
F 705-325-2106
WARRANTY: Under normal use the Company warrants to
the purchaser that defects in material or workmanship will be
repaired or replaced without charge for a period of 18 months
from date of shipment, or 12 months from the start date of
operation, whichever expires  rst. Any claim for warranty
must be reported to the sales of ce where the product was
purchased for authorized repair or replacement within the
terms of this warranty.
Subject to State or Provincial law to the contrary, the
Company will not be responsible for any expense for
installation, removal from service, transportation, or damages
of any type whatsoever, including damages arising from lack
of use, business interruptions, or incidental or consequential
damages.
The Company cannot anticipate or control the conditions of
product usage and therefore accepts no responsibility for
the safe application and suitability of its products when used
alone or in combination with other products. Tests for the
safe application and suitability of the products are the sole
responsibility of the user.
This warranty will be void if, in the judgment of the Company,
the damage, failure or defect is the result of:
• Vibration, radiation, erosion, corrosion, process
contamination, abnormal process conditions,
temperature and pressures, unusual surges or pulsation,
fouling, ordinary wear and tear, lack of maintenance,
incorrectly applied utilities such as voltage, air,
gas, water, and others or any combination of the
aforementioned causes not speci cally allowed for in
the design conditions or,
• Any act or omission by the Purchaser, its agents, servants
or independent contractors which for greater certainty,
but not so as to limit the generality of the foregoing,
includes physical, chemical or mechanical abuse,
accident, improper installation of the product, improper
storage and handling of the product, improper application
or the misalignment of parts.
No warranty applies to paint  nishes except for manufacturing
defects apparent within 30 days from the date of installation.
The Company neither assumes nor authorizes any person to assume
for it any other obligation or liability in connection with the
product(s).
The Purchaser agrees that all warranty work required after the
initial commissioning of the product will be provided only if the
Company has been paid by the Purchaser in full accordance with
the terms and conditions of the contract.
The Purchaser agrees that the Company makes no warranty or
guarantee, express, implied or statutory, (including any warranty
of merchantability or warranty of  tness for a particular purpose)
written or oral, of the Article or incidental labour, except as is
expressed or contained in the agreement herein.
LIABILITY: Technical data contained in the catalog or
on the website is subject to change without notice. The
Company reserves the right to make dimensional and other
design changes as required. The Purchaser acknowledges
the Company shall not be obligated to modify those articles
manufactured before the formulation of the changes in design
or improvements of the products by the Company.
The Company shall not be liable to compensate or indemnify
the Purchaser, end user or any other party against any actions,
claims, liabilities, injury, loss, loss of use, loss of business,
damages, indirect or consequential damages, demands,
penalties,  nes, expenses (including legal expenses), costs,
obligations and causes of action of any kind arising wholly or
partly from negligence or omission of the user or the misuse,
incorrect application, unsafe application, incorrect storage and
handling, incorrect installation, lack of maintenance, improper
maintenance or improper operation of products furnished by the
Company.
Edmonton
1-800-661-8529
1-780-466-3178
F 780-468-5904
Houston
1-800-654-2583
1-713-433-2600
F 713-433-4541
Denver
1-855-244-3128
1-303-979-7339
F 303-979-7350
For further assistance, please call 24hr hotline: [phone] (U.S.A. and Canada)
Please have model and serial numbers available before calling.
PLEASE ADHERE TO INSTRUCTIONS IN THIS MANUAL
Failure to do so may be dangerous and may void certain
provisions of your warranty.