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5. Proceed to the wiring instructions. Recessed Wall Note: The use of a ALTB Trim kit is strongly recommended when recessing the heater. A recess opening dimension of 20-1/2” high and the length of the heater is required to install this heater. The heater may be recessed up to a depth of 5-5/8”. Top PanelScrews BottomPanelScrewsFigure 2 Figure3 INSTALLATION (Recessed Wall) 1. Unpack the heater from the carton and remove the front panel. Note: The front panel screws are recessed at the bottom of the front panel at each end of the heater. 2. Remove the desired terminal box covers and wire supply knockouts from the terminal box area. 3. Use trim frame as a template to drill holes into the top, bottom and sides of the heater using a 1/8” diameter drill bit. 4. Secure the trim frame using the #8 screws provided with the trim kit. TIP: The bottom trim may be omitted if the heater is to be installed at floor level. 5. Prepare the wall recess opening to accept the heater. TIP: Leave approximately 1/2” clearance to insert the heater cabinet. 6. Secure the back plate into the recess opening using suitable fasteners (Provided by customer). 7. Proceed to the wiring instructions. WIRING Note: All wiring should be done in accordance with local codes and the National Electrical Code by a qualified person. 1. Run branch circuit wiring of proper voltage and wire size to the location of the terminal box of the heater. TIP: Supply wire entry is commonly made into one heater. Through wiring (factory furnished) can be used for connection to adjacent heaters. Recommended minimum supply wire sizes are listed in the table below: Maximum Watts Per Circuit Using 75°C. Wire Rough In Wire Size 120V 208V 240V 277V 347V 480V 600V Copper Wire 14 1440 2496 2880 3324 4164 12 1920 3328 3840 4432 5552 10 2880 4992 5760 6648 8328 5760 7680 11520 7200 9600 14400 2. Wire all heaters and controls in accordance with the appropriate wiring diagram. TIP: Sample wiring diagrams are provided on page 4. 3. Wrap the supply ground wire to the green painted ground screw and tighten. Note: When heaters are mounted end to end, remove the finishing end plate, install a chase nipple and locknut in the terminal box to insure grounding continuity, and to protect the wiring. (Figure 4) Chase NipplesInstallation BetweenHeaters Butted TogetherGround Wire RunningThrough Chase NippleFigure4 Where heaters are spaced apart, remove the finishing plate and use rigid conduit (provided by customer) for through wiring and ground continuity. Do not exceed the allowable number of conductors allowed by the National Electrical Code. Terminal Box Volumes (Cubic Inches) Heater Style Left Hand Box 4” Wide Right Hand Box 5” Wide CAF-20 379.75 474.75 4. Do a final and complete check of all wiring then replace the terminal box covers. 5. The front panel may now be installed. WARNING: To prevent the risk of fire, do not operate the heater without the front cover in place. Insert the top of the front panel into the top fla...

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