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5. Rough-in wiring to heater. See Table 2 for line amperes, recommended wire size and conduit size. 6. Wire heater per wiring diagram supplied with this instruction sheet. Note: Power relay(s) are provided as standard on all heaters. WARNING: Prior to operating the heater, verify that the fan hub setscrews are tightened and the push-on clip is secured to assure that the fan blade is securely fastened to the motor shaft. 7. Carefully inspect the completed installation. Rotate the fan blade by hand to be sure that it turns freely. Investigate any binding, rubbing or interference. 8. Air diffusers for deflecting the air are optional. See Instruction Sheet PF449 for Installation instructions. MAINTENANCE WARNING: Hazard of Shock. Disconnect all power 1. Before activating for next heating season, vacuum or use comto heater before servicing or replacing heaters. Do pressed air to remove accumulated dust or lint, which other- not attempt to service heater while unit is operat-wise may restrict proper air flow. ing as there is hazard of electric shock, injury 2. Periodically check all electrical connections and retighten to from operating fan, and burns from hot heating avoid electrical wiring difficulties. elements. WIRING DIAGRAMS VOLTTransformer Color Code IndexPRI XFMRLEAD CLRS120V SEC. LEAD CLRS24V SEC. LEAD CLRS208240277480H1BLKBLKBLKBLKX1BLKBLKBLKBLKX2WHTWHTWHTWHTX1YELYELYELYELX2BLUBLUBLUBLUH2REDORGBRNBLK/REDL1L1L2C1C1X1C2TB2XFMRFusingOptionalXFMRL3L2L3T1T2T3X2H1H2Thermostat(By Others) ContactorTo FusesCutoutElementsFused Switch(By Others) 3oPower60 HZ1TB13M29468115107208 - 240V Motor Hook-UpKTK-4Customer WiringFactory Wire123M4611581097480V Motor Hook-Up Figure 3 L1L1L2C1C1C2TB2L3L2L3T1T2T3Thermostat(By Others) Control Power(By Others) ContactorCutoutElementsFused Switch(By Others) 3oPower60 HZ1TB13M29468115107208 - 240V Motor Hook-UpKTK-4Customer WiringFactory Wire Figure 4 L1L1L2C1C1C2TB2L3L2L3T1T2T3Thermostat(By Others) ContactorCutoutElementsFused Switch(By Others) 3oPower60 HZ1TB13M29468115107208 - 240V Motor Hook-UpKTK-4Customer WiringFactory Wire Figure 5 VOLTTransformer Color Code IndexPRI XFMRLEAD CLRS120V SEC. LEAD CLRS24V SEC. LEAD CLRS208240277480H1BLKBLKBLKBLKX1BLKBLKBLKBLKX2WHTWHTWHTWHTX1YELYELYELYELX2BLUBLUBLUBLUH2REDORGBRNBLK/REDL1L1L2C1C4C1X1C2TB2TB2FanHeatXFMRFusingOptionalOptional HeatRecovery switch(By Others) 2 PDTSwitch(By Others) XFMRL3L2L3T1T2T3X2H1H2Thermostat(By Others) ContactorTo FusesCutoutElementsFused Switch(By Others) 3oPower60 HZ1TB13M29468115107208 - 240VMotor Hook-UpKTK-4Customer WiringFactory WireL1C3L2L3T1T2T3123M4611581097480V Motor Hook-Up Figure 6 L1L1L2C1C4C1C2TB2FanHeatOptional HeatRecovery switch(By Others) 2 PDTSwitch(By Others) L3L2L3T1T2T3Thermostat(By Others) ContactorContactorCutoutElementsFused Switch(By Others) 3oPower60 HZ1TB13M29468115107208 - 240VMotor Hook-UpKTK-4Customer WiringFactory WireL1C3L2L3T1T2T3 Figure 7 Note: All fan motors are totally enclosed and internally thermal overload protected. MOTOR LUBRICATION Motors in VUH-C-15 through VUH-C-25 have sleeve bearings which are factory lubricated. RENEWAL PARTS IDENTIFICATION MANUFACTURER PART NUMBER BREAKDOWN (LOCATED ON UNIT NAMEPLATE) V Diagram Description Part No.Item No. 4 Fan 112-510499-001 5 Grille 134-130439-001 6 Overheat Cutout 300-024283-004 Common Parts Element MotorCode kW Volts Phase Part No. Part No.No. (Item 1) (Item 2) 15-83 208 118-130437-007 (3) 15-23 15 240 118-130437-004 (3) 15-43 480 3 118-130437-005 (3) 193-057647-001 20-23 19.5 240 118-130437-007 (3) 20-43 20 480 118-130437-008 (3) 25-43 25 480 118-130437-011 (3) Code Part Diag. Wiring Wiring Diagram No. Description Number Item Dia. Part No.No. Figure Contactor-24V Coil (30A) 072-303180-001 3 30-00 Contactor-24V Coil (50A) 072-303180-002 3 3 170-057688-006 Transformer 315-304252-002 7 Contactor-24V Coil (30A) 072-303180-001 331-00 Contactor-24V Coil (50A) 072-303180-002 3 4 170-057688-007 Contactor-120V Coil (30A) 072-303180-007 3 32-00 Contactor-120V Coil (50A) 072-303180-008 3 3 170-057688-006 Transformer 315-304252-001 7 Contactor-120V Coil (30A) 072-303180-007 3 32-45 Contactor-120V Coil (50A) 072-303180-008 3 6 170-057688-009 Transformer 315-304252-001 7 Contactor-120V Coil (30A) 072-303180-007 333-00 Contactor-120V Coil (50A) 072-303180-008 3 4 170-057688-007 Contactor-208/240V Coil (30A) 072-303180-003 334-00 Contactor-208/240V Coil (50A) 072-303180-014 3 5 170-057688-008 Contactor-208/240V Coil (30A) 072-303180-003 334-45 Contactor-208/240V Coil (50A) 072-303180-014 3 7 170-057688-010 U H C Elements and Motor Controls NOTES: Number in parenthesis ( ) indicates quanitity required of that part. Optional Transformer Fusing Fuse Type Part No. KTK-3 128-047763-007 (2) Fuse Type Part No. KTK-4 128-047763-008 (3) Motor Fusing Heating Element Fan Motor Contactor Fan Blade Grille Overheat Cutout Transformer Limited Warranty: Please refer to the Chromalox limited warranty applicable to this product at http://www.chromalox.c...