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PENN Controls Products Catalog

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Selection charts Table 45: Selection Charts Product Code Number Switch Action Range °F (°C) Differential F° (C°) Bulb and Capillary Bulb Well No. (Order Separately) Range Adjuster Coiled Bulb-Fixed Differential A28AA-4C Two-SPDT 30 to 110 (-1 to 43) 3-1/2 (1.9) each stage 3 (1.7) fixed between stages 1-3/8 in. x 2-1/4 in. coiled – Convertible Wide Range-Adjustable Interstage Differential A28AA-28C Two-SPDT 30 to 110 (-1 to 43) 3-1/2 (1.9) each stage 2 to 7 adjustable between stages 12 ft averaging bulb 6 ft capillary – Screwdriver slot A28AA-29C Two-SPDT -30 to 100 (-34 to 38) 5 (2.8) each stage 2 to 7 adjustable between stages 3/8 in. x 4 in. 8 ft capillary WEL14A-602R Convertible A28AA-36C Two-SPDT 40 to 90 (4 to 32) 3 each stage 2 to 7 adjustable between stages 3/8 in. x 5-3/4 in. 6 ft capillary – Knob A28AA-37C Two-SPDT 60 to 140 (16 to 60) 5 each stage 2 to 7 adjustable between stages 3/8 in. x 4 in. 6 ft capillary WEL14A-602R Knob A28AJ-4C Two-SPDT 20 to 80 (-7 to 27) 2 each stage 2 to 7 adjustable between stages 3/16 in. x 22 in. 6 ft capillary – Knob Changeover Control A28AB-1C Two-SPDT 1 20 to 80 (-7 to 27) 3-1/2 (1.9) 3/8 in. x 5 in. 6 ft capillary WEL14A-603R Screwdriver slot 1 Switches within 1 F° (0.6 C°) of each other. Table 46: Replacement Parts Product Code Number Description CVR28A-617R Concealed adjustment CVR28A-618R Visible scale KNB20A-602R Knob kit 45 Refrigeration Products Catalog

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