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Resumen del manual
Open carton and remove heater at the place of installation. between heaters to project heat radiation downwards to maintain Mounting clamps are in parts bag in carton. comfort level within the radiation field. 2. Check nameplate volt and watt rating against your power supply voltage and heating requirements of your installation. This nameplate is located on one end of the heater. INSTALLATION MOUNTING (See Figure 1) 1. Layout heater locations to the desired heat affected work area. 2. Minimum spacing to walls and ceiling are — A. One foot (12”) from top of heater to ceiling. B. Two feet (24”) from side or end of heater to adjacent walls. 3. Minimum safe height above floor level for combustible material is 6 feet (72”). However, if ceiling height permits, more practical height is 8 feet or more to avoid high radiation intensities at head level when one stands directly below heater. Combustible SurfacesProtective Grille12” Min. 24” Min. 24” Min. MaximumRadiationWithin60° IncludedAngleA72” Min. B3-11/16” 2-3/4” 3/8” Conduit Figure 1 © 2010 Chromalox, Inc. INSTALLATION 4. Refer to Figure 2. Assemble one flat lock nut onto one end of each support tube or conduit and thread them into the tapped openings in top of heater. One of these support tubes contains three insulated wire leads. Handle with care to avoid damage to lead insulation. WARNING: Do not cut the support tube for in doing so the minimum 12” clearance to ceiling will be violated resulting in excessive ceiling temperatures. Tighten lock nut securely against heater case. 5. Slip the canopies loosely over the fixture support tubes. 6. Assemble remaining locknuts onto ends of support conduits. Flat nut goes on first; spherical nut last with its convex side facing heater. See Figure 2. There should be full thread engagement at the top spherical nut. Allow about 1/2” spacing between nuts to facilitate hanging to brackets. Set the assembly aside. 7. WARNING: Hazard of Electric Shock. Disconnect all power to ceiling wiring box to which one heater support will be fastened. 8. Install special cover plate and saddle bracket, provided with heater, over ceiling wiring box after fishing insulated power leads and ground lead, if provided, through large opening in cover plate. Use mounting screws provided with wiring box. 9. Mount remaining saddle bracket to ceiling at the remaining planned point of support. The brackets should be on B dimension centers given in Specifications — Table A. 10. Raise heater assembly, and slide both spherical nuts through slot in saddle brackets until spherical nut rests in the slot depressions. Run bottom lock nut up against bracket to lock the assembly into place. Cover PlateSpherical LocknutSaddle BracketFlat LocknutCanopyFlat Locknut3-1/1/4or 4" octagonalbox to be installed inceiling at one end ofheater location. (Cus- tomer furnished). 3/8” StemFigure 2 WIRING WARNING: Hazard of Electric Shock. Any installation involving electric heaters must be grounded to earth to eliminate shock hazard. 1. All wiring to heater wiring box shall be in accordance with National Electrical Code and/or local wiring code. 2. Power conductors should be sized to handle 125% of heater current given in Specifications — Table A. 3. Complete electrical wiring between heater leads and power leads using insulated wire nuts. Tuck excess lead around and behind saddle brackets. 4. The green colored ground lead should be connected to ground lead from wiring box, or if such lead is not provided, then the ground lead should be grounded to the conduit box to insure ground continuity. Note: If heaters are to be suspended more than 12” below ceiling, the heater support tubes should terminate into a Crouse-Hinds Type C Condulet in line wiring box where splice to power leads can be made (See Figure 3). A 3/8” pipe or conduit extension of the Figure 3 desired length from top of Condulet can then terminate at the ceiling wiring box utilizing cover plate, brackets, and lock nuts as with conventional installation. 5. To complete installation raise canopies to completely enclose brackets and electrical wiring. Tighten set screw. 6. If wiring from heater becomes damaged or requires replacement, it should be replaced with special high temperature wire as furnished with heater. Replacement wires can be ordered from Chromalox. (See RENEWAL PARTS section.) Maximum number of Heaters limited by 25 AMP. — 120 Volt, 20 AMP. — 240 Volt Controller Rating. The VC orVCR15 or 30SecondInputController120 or240VSKRHeatersWired 1oContactorSKR HeatersWired 1o or 3o120, 208, 240, 275,480 Volt Singleor Three PhaseLimiting Thermostat (Optional)InputControl120 or240VSingle Phase Wiring — Solid LineThree Phase Wiring — Dotted Added(Type VC or VCR) when voltage and load current exceed controller capacity{ { Figure 4 Figure 5 SKR Radiant Heater Control by Input Controller OPERATION DANGER: Fire Hazard. This heater is not intended 1. Although most heaters operate at full capacity, it is possible to for ...