CCI Thermal Technologies RXDF User Manual

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS FOR

TYPE XDF – EXPLOSION PROOF DUCT HEATER

MI289 REV.1 Page 1 of 4

1.0 SCOPE

This manual details the installation, operation, and maintenance
instructions for Caloritech™ type XDF explosion-proof duct heaters.
Refer to Section 10 for specific drawings and bills of materials for
related equipment supplied under this order.

Your XDF explosion-proof duct heater has been CSA C/US Certified
to meet the requirements for hazardous location equipment for use
in Canada and the United States. When properly maintained and
serviced, you can expect years of trouble free operation.

Carefully read and follow all instructions outlined in this manual to
ensure proper installation and safe operation of your heater.

2.0 GENERAL INFORMATION

2.1 DESCRIPTION

Caloritech™ type XDF explosion-proof duct heaters are designed
for heating air or gases that contain potentially explosive substances.
XDF heaters feature the unique Caloritech™ approach to explosion­proof electric heater design, which embodies safety and reliability.

The XDF is a factory pre-wired explosion-proof duct heater.
Standard models are available in three duct sizes, with either a
single or double bank of heating modules. XDF heaters are available
as standard units with T3B, T3A, or T2D hazardous area
temperature codes.

2.2 APPLICATION

The XDF is designed specifically for heating industrial spaces where
potentially explosive substances are or may be present. Typical
hazardous location environments include:

• Water and sewage treatment plants

• Oil refineries

• Pulp and paper mills

• Petrochemical plants

• Grain elevators

• Paint storage booths

• Cement plants

2.4 STANDARD PRODUCT FEATURES

• T2D, T3A, or T3B temperature code

• CSA C/US Certified for use in hazardous areas. T2D units
Certified for use in Class I, Division 1 & 2, Group C & D
hazardous areas. T3A units Certified for use in Class I,
Division 1 & 2, Group C & D; Class II, Division 1 & 2, Group
E & F hazardous areas. T3B units Certified for use in Class
I, Division 1 & 2, Group C & D; Class II, Division 1 & 2,
Group E, F, & G hazardous areas.

• Painted steel duct section

• Differential pressure switch (supplied loose)

• Factory installed high limit sensing thermocouple(s)

2.5 OPTIONAL PRODUCT FEATURES

• Transition sections

• Stainless steel duct section

• Special temperature code

• Outlet air thermostat

• Outlet air thermocouple

3.0 SPECIAL NOTICES

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.

2.3 CONSTRUCTION

The XDF explosion-proof duct heater features heavy-walled car­bon steel finned tubular heating elements with electroless nickel
plated finish to provide safe, efficient, low temperature heat trans­fer. Standard units have a painted carbon steel duct section with
mounting holes provided for attachment to the duct section.

XDF heaters feature the unique Caloritech™ patented x-Max®
copper-free aluminum extruded terminal housing. A track-and-trol­ley system and threaded covers on each end allow easy access to
wiring terminal connections.

Units are suitable for mounting in a horizontal duct section only.

4.0 PRE-INSTALLATION

4.1 Inspect the heater for possible damage due to shipping

and handling. Claims for shipping damages shall be placed with
the carrier.

4.2 Check the heater nameplates to ensure that the heater area

classification and temperature code are suitable for the hazardous
area classification.

CCI Thermal Technologies Inc. 2767 Brighton Road, Oakville, ON L6H 6J4 Tel. [phone] Fax [phone]

www.ccithermal.com

4.3 Verify that the nameplate voltage, phase, and wattage are

Duct Size No. of Weight

(W x H) Banks A B C D L kg (lbs)

610 x 305 1 610 305 686 381 927 41 (90)

(24 x 12) 2 (24) (12) (27) (15) (36½) 73 (160)

762 x 457 1 762 457 838 533 1080 61 (135)

(30 x 18) 2 (30) (18) (33) (21) (42½) 114 (250)

914 x 610 1 914 610 991 686 1232 82 (180)

(36 x 24) 2 (36) (24) (39) (27) (48½) 148 (325)

Dimensions

as ordered and are the same as the electrical power supply
available.

DO NOT CONNECT THE HEATER TO AN
ELECTRICAL SUPPLY VOLTAGE OTHER
THAN THAT SHOWN ON THE PRODUCT
NAMEPLATE.

REVIEW THIS MANUAL AND ALL DRAWINGS
CONTAINED WITHIN PRIOR TO
INSTALLATION, WIRING, OR OPERATION OF
THE HEATER.

5.0 DIMENSIONS AND INSTALLATION

The heater must be installed by qualified personnel in strict
compliance with the electrical code and hazardous locations
standards.

THE HEATER MUST BE INSTALLED IN A
HORIZONTAL DUCT SECTION ONLY.
IMPROPER ORIENTATION OF THE HEATER
COULD AFFECT THE SAFE AND RELIABLE
OPERATION OF THE HEATER.

5.1 HEATER DIMENSIONS

Table 1 - Heater Dimensions and Weights (See Fig. 1)

MI289 REV.1 Page 2 of 4

Figure 1 - XDF Heater Dimensions

5.2 INSTALLATION

5.2.1 The heater is designed for installation in a horizontal duct

with the terminal boxes at the side. Improper orientation of the
duct heater could effect the safe and reliable operation of the heater.

Note: All dimension in millimeters (inches in brackets).

IMPROPER ORIENTATION OF THE HEATER
COULD AFFECT THE SAFE AND RELIABLE
OPERATION OF THE HEATER.

NEVER USE THE CONTROL HOUSINGS FOR
LIFTING OR MOVING THE HEATER AS THIS
COULD DAMAGE THE HEATING ELEMENTS
AND CONDUIT.

5.2.2 To install the heater, bolt the heater assembly into the

customer supplied ducting system. If necessary, reinforce with duct
supports to support the heater weight as shown in Table 1. Note
proper orientation of heater, as shown by the "TOP" and "AIRFLOW"
labels.

5.2.3 An explosion-proof pressure differential switch has been

supplied loose. Install the switch in a suitable location and with
proper orientation. Install tubing between the switch and the duct
using the appropriate port on the switch body (sensing high or low
pressure). Consult manufacturer's operation instructions included
with this manual.

THE PRESSURE DIFFERENTIAL SWITCH IS A
CRITICAL SAFETY COMPONENT. IMPROPER
INSTALLATION OF THE SWITCH MAY RESULT
IN HAZARDOUS CONDITIONS.

CCI Thermal Technologies Inc. 2767 Brighton Road, Oakville, ON L6H 6J4 Tel. [phone] Fax [phone]

www.ccithermal.com