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EN- Raychem920series-IM-H5687405/15
INDUSTRIAL HEAT TRACING SOLUTIONS
1.5.1 ENCLOSURE ASSEMBLY
Enclosure Assemblies
Description Catalog number Part number Weight/lbs
Raychem 920 controller–2 Pt in a 14" x 12" x 8" FRP
enclosure with window and quick-release latches,
control module, and operator console. 1P 30 A 277 V
SSR/pt. Controls two circuits, each with a 1-pole
solid-state relay. (Approved for Class 1, Div. 2 areas)
920*E4FWL*SIS302*SS3102*HTC*CON 10160-010 27
Raychem 920 controller–2 Pt in a 14" x 12" x 8" FRP
enclosure with window and quick-release latches,
control module, and operator console. Includes an
isolated 2-wire RS-485 communication option. 1P
30 A 277 V SSR/pt. Controls two circuits, each with
a 1-pole solid-state relay. (Approved for Class 1, Div.
2 areas)
920*E4FWL*SIS302*SS3102*HTC485*CON 10160-011 27
Raychem 920 controller–2 Pt in a 14" x 12" x 8" FRP
enclosure with window and quick-release latches,
control module, and operator console. 2P 30 A 277 V
SSR/pt. Controls two circuits, each with a 2-pole
solid-state relay. (Approved for Class 1, Div. 2 areas)
920*E4FWL*SIS302*SS3202*HTC*CON
10160-012 32
Raychem 920 controller–2 Pt in a 14" x 12" x 8" FRP
enclosure with window and quick-release latches,
control module, and operator console. Includes an
isolated 2-wire RS-485 communication option. 2P
30 A 277 V SSR/pt. Controls two circuits, each with
a 2-pole solid-state relay. (Approved for Class 1, Div.
2, areas)
920*E4FWL*SIS302*SS3202*HTC485*CON 10160-013 32
Raychem–Raychem Supervisory Software Raychem Supervisor 10391-002 1
IMPORTANT: The NEC (and CEC) rules specify that all ungrounded—i.e., hot—legs of a circuit, must be switched in the event of a
ground fault. This means for 207 V single-phase applications, you must specify a 2-pole (2P) version if you are not using external GFI
breakers.
Control Modules
Raychem 920 controller–Control module only
(No communications options installed)
920HTC 10260-001 1
Raychem 920 controller–Control module
with an isolated
2-wire RS-485 communication option installed
920HTC*485 10260-004 1
Raychem 920 controller–Control module
with modem
communications option installed
920HTC*MDM 10260-002 1
Operator Console
Raychem 920 controller–Operator console 920CON 10260-005 1
Contact your local representative for other available configurations that are not
listed above.
SECTION 2 INSTALLATION AND WIRING
CAUTION:
Be sure all personnel involved in installation, servicing, and programming are qualified and
familiar with electrical equipment, their ratings and proper practices and codes. Multiple voltages
and signal levels may be present during the installation, operation, and servicing of this product.
Do not power the product until the safety provisions outlined in this section have been observed.
2.1 INTRODUCTION
This section includes information on the initial inspection, preparation for use, and storage
instructions for the 920 series heat trace controller.
CAUTION:
Solid-state relay (SSR) modules may be extremely hot immediately after power is removed.
Exercise care when handling SSRs.
2.2 INITIAL INSPECTION
Inspect the shipping container for damage. If the shipping container or cushioning material is
damaged, it should be kept until the contents of the shipment have been verified for completeness
and the equipment has been checked mechanically and electrically. Procedures for configuring
and operating the heat trace controller are given in Section 3 on page 18. If the shipment is
incomplete there is mechanical damage, a defect, or the controller does not pass the electrical
performance tests, notify your Pentair Thermal Managament representative. If the shipping
container is damaged, or the cushioning material shows signs of stress, notify the carrier as
well as your Pentair Thermal Managament representative. Keep the shipping materials for the
carrier’s inspection.
2.3 OPERATOR SAFETY CONSIDERATIONS
The standard 920 controller using solid-state relays is suitable for Class I, Division 2, Groups A,
B, C, D and Zone 2 hazardous areas. Haz-ardous areas are defined by Article 500 of the National
Electrical Code and Section 18 of the Canadian Electrical Code. Contactor-based assemblies are
suitable for use in ordinary (non-hazardous) areas only.
CAUTION:
Many wiring configurations will use more than one power source and all must be de-energized
prior to performing any maintenance on a controller circuit.
2.4 OPERATING ENVIRONMENT
The operating environment should be within the limitations described in the 920 heat trace
controller specifications outlined in Appendix A on page 61.
2.5 INSTALLATION LOCATION
The wide ambient operating temperature range of the controller permits installation in any
convenient location. Considerations should include expected atmospheric conditions, accessibility
for maintenance and testing, the location of existing conduits, and hazardous area rating. Ambient
temperature conditions may affect load current ratings.
CAUTION:
Always be sure that the intended location is classified as an area that the product is approved for
as defined by Article 500 of the National Electrical Code and/or Part I, Section 18 of the Canadian
Electrical Code.
2.6 MOUNTING PROCEDURES
Mounting hole dimensions for the standard enclosures are shown in Appendix B on page 63. If
possible, conduit entries should be made in the bottom of the enclosure to reduce the possibility
of water entry or leakage. Conduit entries must be drilled/punched following the enclosure
manufacturer’s recommendations. Use bushings suitable for the enclosure type and install
such that the completed installation remains waterproof. Grounding hubs and conductors must
be installed in accordance with Article 501-4(b) of the National Electrical Code and Part I of the
Canadian Electrical Code.
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