Thermon Caloritech EX Series Manuals

THS3002-1220 Printed in Canada EX Series Special Notes CAUTION CAUTION. This document presents the minimum requirement pertaining to the installation, operation, and maintenance of the respective equipment as required by the manufacturer only. Any additional considerations, including but not limited to any design consideration, in-service inspection, and fitness-for-service assessment for all pressure boundary components to meet any safety principles and local jurisdictional regulatory requirements, shall be the responsibility of the user. ELECTRIC SHOCK HAZARD. All electric heating equipment installations must be performed by qualified personnel in accordance with the local electrical codes and standards and must be effectively grounded to eliminate shock hazard. WARNING FIRE/EXPLOSION HAZARD FOR EXPLOSIVE ATMOSPHERE HEATERS. This heater shall be used with protection controls as follows: Liquid Immersion Applications a. Liquid level control to maintain all the heating elements totally immersed at all times, in conjunction with temperature controls to limit the liquid temperature below the maximum allowable process design temperature. b. Terminal box internal surface temperature control to limit the surface temperature of the terminal box c. Heater flange surface temperature control to limit the surface temperature of the flange. d. Heating elements sheath temperature controls to limit to the maximum allowable sheath design temperature e. Earth fault or earth leakage current protection device to protect against arcing and sparking during an earth fault. Gaseous and/or vapour phase immersion applications a. Heating elements sheath temperature controls to limit to the maximum allowable sheath design temperature. b. Terminal box internal surface temperature control to limit the surface temperature of the terminal box c. Heater flange surface temperature control to limit the surface temperature of the flange. d. Earth fault or earth leakage current protection device to protect against arcing and sparking during an earth fault. CAUTION Circulation Heaters ISO 9001 Installation, Operation, & Maintenance Instructions For CE/ATEX and IECEx Models. Models with Increased Safety (Type eb) Protection Method 22 WARNING Fire/Explosion Hazard. Do not exceed the ratings of the flange as listed in ANSI BI6.5. In case of code stamped of registered heater, do not exceed the rating as stated in the data report and/or registration documents. Do not operate the heater in the presence of combustible gases, vapours, dusts or fibres unless the heater is specifically marked for the hazardous location and heater operating temperature does not exceed the temperature code rating. Corrosion of the sheath could result in a ground fault which, depending upon the fluid being heated, could cause a fire or an explosion. WARNING Fire Hazard. If a thermostat is provided, it is designed for temperature control service only. Since the thermostat does not fail safe, it should not be used for temperature limiting duty. Wiring to this device is the users' responsibility. Heaters are capable of developing high temperatures, therefore extreme care should be taken to: a. Use explosion-proof terminal enclosures in explosive atmospheres. b. Maintain distance between heater and combustible materials. The heater must be installed and operated in accordance with the following specific conditions of use: 1. The heater shall be installed with electrical safety devices as described in the Installation, Operating and Maintenance manual and in accordance with local codes and standards. 2. It is the user’s responsibility to connect the installed temperature sensors to safety devices as defined in IEC 60079-0, that are fail-safe and can only be reset manually. The temperature monitoring circuit shall be set according to the controller set point label on the equipment and used to disconnect the supply when operated. 3. Anti-condensation heater, if used, shall be prevented from operating while the immersion heater is in operation. 4. The temperature classification of the heater is based on the complete immersion of the heater elements in either a fluid or gas. Depending on the use of the heater, a flow or liquid level device must be used to ensure immersion in the process medium. Refer to the Installation, Operating and Maintenance manual for details. 5. The heater must be installed in accordance within the operating parameters taken from the nameplate, caution labels, instruction manual and condition of use documentation. 6. An electrical protection device must be installed to protect against earth related faults in accordance with the Installation, Operating and Maintenance manual. 3 TABLE OF CONTENTS A. Diagrams ............................................4 B. Description ........................................6 C. Installation .........................................7 D. Operation ...........................................8 E. Maintenance .....................................9