Ruffneck FX5 Series User Manual

WARNING! Read all important information notices on pages 2–4
ISO 9001
Part No. 9714.Rev.11.07 Aug 2018 Printed in Canada
FX5 Series
Electric Forced Air Heaters for Hazardous Locations
Installation, Operation, & Maintenance Instructions
approved Locations
The Electric Forced Air Heaters are
c
UL
us
listed certified for the following locations:
Class I, Division 1 & 2, Groups C & D; Class II, Division 1, Groups E, F & G; Class II,
Division 2, Groups F & G; Class I, Zones 1 & 2, Groups IIA & IIB; Temperature Code
T3B 329˚F (165˚C) (50 Hz & 60 Hz Models)
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.
C US
Listed
FX5 - 480 3 60 - 350 - W - T
Model
Series
5th Generation
Heater Voltage
208V, 240V,
480V, 600V
Phase
1, 3
Hertz
50, 60
Heater Kilowatts
Welded Core
T – XT-311 Thermostat with slim
junction box
XT-411 Thermostat with large
junction box
D – Built-in disconnect
P – Built-in pilot light
S – 3-way switch
Model Coding
H – Unit with high “off” de-energized
ambient temperatures
C – Heresite
®
coating
A – Stainless steel cabinet
U – Continuous fan
B – Low ambient option -58°F (-50°C)
L – Large junction box

Ruffneck FX5 Series Specifications

General

Brand	Ruffneck
Model	FX5 Series
Category	Heater
Language	English

Summary

Heater Maintenance Checklist

Preventative Maintenance Grid

Maintenance grid detailing required tasks for regular and severe service conditions.

Periodic and Annual Maintenance

Periodic Maintenance

Tasks to perform before and during the heating season for upkeep.

Annual Maintenance

Mechanical and electrical checks required before the heating season starts.

Important Notices

Troubleshooting Tips

Installation

Mechanical Installation

Guidelines for heater location and mounting requirements.

Electrical Installation

General electrical requirements and field wiring instructions.

Final Electrical Inspection

Pre-power checks for secured connections and system compatibility.

Wiring Schematics

Diagrams illustrating various heater wiring configurations.

FX5 Technical Specifications

50 Hz Electric Heaters

Technical data and specifications for 50 Hz FX5 models.

60 Hz Electric Heaters

Technical data and specifications for 60 Hz FX5 models.

Model Specifications

50 Hz Models

Performance and physical specifications for 50 Hz models.

60 Hz Models

Performance and physical specifications for 60 Hz models.

Parts Assembly Diagram

Parts List

Repair and Replacement Procedures

Heater Core Repair

Procedure for removing and handling the heater core.

Temperature High Limit Service

Instructions for servicing or replacing the temperature high-limit assembly.

Motor, Fan, and Fan Guard

Steps for servicing the motor, fan, and fan guard components.

Heating Elements

Information regarding heating elements and core replacement.

Contactor Replacement

Procedure for replacing the heater's contactor.

Printed Circuit Board Replacement

Steps for replacing the printed circuit board (PCB).

Fuse Replacement

Guidance on replacing fuses and storing spare fuses.