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manual abstract
If an element or other part listed in Table A (page verting these earlier models to the current Style 3B. This conversion 3) is necessary, order according to heater housing length and the is necessary because replacement parts for the old models are no voltage and wattage stamped on the element and the heater name- longer available. plate. The changes involved are primarily in the terminal area as For complete installation information for type RAD - Style shown in Figures I, 2 and 3. Match-up one of the Figures with your 3B, request Chromalox Service Reference sheet PG404. CONVERSION CAUTION: Hazard of electric shock. Disconnect power before servicing heater. A. CONVERTING STYLES 0 AND 1 TO STYLE 3B RADIANT HEATER 1. Completely disassemble heater. Re-use the heating element (if desired) and the extruded aluminum housing (Fig. 7). Scrap all the other parts. 2. Drill #24 (.152" dia.) hole in the back of the extruded housing , 3" from each end. (See Fig. 7) A 3. NOTE: If replacing old element with a new one, omit this step. BRemove wire retaining loops ® (Fig. 6) from the elements and replace with wire loops fashioned from #15 gage (.072" dia.) or larger stainless steel wire located 2-1/4” from each end of the sheath. Other high temperature materials such as nichrome may be substituted. Braze or tack weld the loops in position. 4. Besides the Parts Bag 168-016585-002 (Fig. 4), you will need 672insulation bushings ®, element support clips , reflector ® and element (if required) as listed in Table A, page 2. NOTE: Quantities of these parts, as well as size of element and reflector will be determined by the heater housing length of the old unit. Figure 1 – Style 0 and 1 Terminal Area Assembly 5. Assemble heater as shown in Figure 7. © 2010 Chromalox, Inc. CONVERSION (cont’d.) B. CONVERTING STYLE 3 TO STYLE 3B RADIANT HEATER C. CONVERTING STYLE 3A TO STYLE 3B RADIANT HEATER Figure 2 – Style 3 Terminal Area Assembly Figure 3 – Style 3A RAD Heater Terminal Area Assembly 1. Completely disassemble heater. Re-use the heating element 1 1. Completely disassemble heater. Scrap the bottom terminal 917161215(if desired), the extruded aluminum housing. the element sup- 6blocks •••, the terminal block support brackets •••, the port clips ••• and insulation bushing 7•• . Scrap all other parts. Tinnerman® “U” speed nuts •••, the terminal block support 2. Drill #24 (.152" dia.) hole in the wiring trough of the extruded Abracket screws ••• and the terminal block screws •••. Re-use all housing •• , 3" from each end. the other parts, including the heating element unless a new one NOTE: If replacing old element with a new one, omit steps 3 and 4. is required. In this case order an element from Table A, page 3 3. Remove terminal connector from terminal pin and replace with with same voltage and wattage and for same heater housing terminal connector 302-019961-002. The location of this con-length as old unit. nector is as shown in Figure 6. 2. Assemble heater as shown in Figure 7 using Parts Bag 1684. Fashion wire loops from #15 gage (.072" dia.) or larger high 016585-001. temperature wire (such as stainless steel or nichrome) and braze or tack weld these loops in position 2-1/4” from each sheath end of the element. 5. Assemble heater as shown in Figure 7 using Parts Bag 168016585- 002. RENEWAL PARTS IDENTIFICATION Figure 4 – Parts Bag 168-016505-002 (to convert Style 0, 1 and 3B Figure 5 – Parts Bag 168-016585-001 (to convert Style 3A to Style 3B) PARTS BAG 168-016585-001 Consists of: Terminal Block ...........303-016367-001 (2) Speed Nuts.................272-048153·005 (4) Terminal Block ...........303-014326-001 (2) Screws - #8 x 1" Lg. ..248-075519-095 (6) 9101112PARTS BAG 168-016585-001 Consists of: Terminal Cover..............306-014405-001 (2) Terminal Cover Clip.......056-014401-002 (4) End Plate.......................220-017278-001 (2) Terminal Block ..............303-016367-001 (2) Speed Nuts....................272-048153-005 (4) Terminal Block ..............303-014326-001 (2) Screws - #8 x 1” ...........248-075519-095 (6) Screws - #8 x 3/8” ........248-075519·080 (4) Screws - #8-32 x 3/8”...248-075512-053 (4) 34591011121314 RENEWAL PARTS IDENTIFICATION MISCELLANEOUS HARDWARE Screws 81213148101115 Terminal Screw .....................................................................248-046044-002(2) #8 x 1” Lg..............................................................................248-075519-095(6) #8 x 3/8” Lg...........................................................................248-075519-080(4) #8-32 x 3/8” Lg. ....................................................................248-075512-053(4) MISCELLANEOUS HARDWARE Terminal Screw .....................................................................303-016367-001(2) Speed Nuts ............................................................................272-048153·005(4) Terminal Block.......................................................................303-014326...