Chromalox PF452-4 User's Manual
Contents
1. Motor Lubrication Motors in VUH C 30 through VUH C 50 heaters have ball bearings which are factory lubricated for life Note All fan motors are totally enclosed and internally thermal overload protected Common Parts RENEWAL PARTS IDENTIFICATION MANUFACTURER PART NUMBER BREAKDOWN LOCATED ON UNIT NAMEPLATE U H C Diagram 4 Fan Grille Overheat Cutout Main Line Fusing 112 510500 001 134 130490 001 300 024283 006 Applicable On Units Over 48 Amps Only Fuse Tne Used On Panno JKS 60 JKS 50 JKS 40 30 83 40 23 128 026510 007 6 30 23 128 026510 006 6 50 43 128 026510 004 6 Optional Transformer Fusing KTK 3 128 047763 007 2 Motor Fusing Controls Con Con Description actor 24V Coil 30A actor 24V Coil 50A Transformer Part Number 072 303180 001 072 303180 002 315 304252 002 Diagram Item No Wiring Dia Fig Wiring Diag Part No Con Con actor 24V Coil 30A actor 24V Coil 50A 072 303180 001 072 303180 002 Con Tran actor 120V Coil 30A Contactor 120V Coil 50A sformer 072 303180 007 072 303180 008 315 304252 001 Con Contactor 120V Coi Tran actor 120V Coi 50A sformer 304A 072 303180 007 072 303180 008 315 304252 001 Con Con actor 120V Coil 302. Fusing Optional H2 L oro o Fused Switch By Others WIRING DIAGRAMS x j 208 240V Motor Hook Up Figure 9 480V Motor Hook Up A 6 9 170 057688 017 sZ 10 I 1 4 1 2y73 To Fuses 2 Stage T Stat By Others TTT Contactors Notes 1 C2 Must Be Con nected To 1st Stage L Of Thermostat Stage 2 _1_ 2 For Single Stage Operation Jumper C2 amp C3 7 Control Power Customer Wiring By Others Fused Switch Factory Wire By Others F 480V Motor Hook U Figure 10 otor Hook Up Transformer Color Code Index PRIXFMR 120V SEC 24V SEC LEAD CLRS LEAD CLRS LEAD CLRS 170 057688 018 u m x1 x2 X2 BLK RED BLK WHT BLU BLK ORG BLK WHT BLU BLK BRN BLK WHT BLU Optional Heat BLK BLK RED BLK WHT BLU Recovery Stat By Others 2 Stage T Stat w 2 PDT Switch Contactors By Others Notes 1 C2 Must Be Con nected To 1st Stage Of Thermostat 2 For Single Stage Fused Switch Operation Jumper C By Others XFMR C2 amp C3 Customer Wiring Fusing Factory Wire Optional
3. Recovery Stat By Others 2 Stage T Stat w 2 PDT Switch By Others Customer Wiring Factory Wire Optional Heat Recovery Stat By Others 2 Stage T Stat w 2 PDT Switch By Others Customer Wiring Factory Wire 480V Motor Hook Up To Fuses 2 Stage T Stat By Others Customer Wiring Factory Wire Contactors T Cutout Ti T2 73 OT aja 7 z0 XFMR Fusing Optional Fuse Block Fuse Block no ON o 54 30 Fused Switc By Others 208 240V Motor Hook Up Contactors Cutout 2 Fuse Block Transformer Color Code Index PRIXFMR 120V SEC 24V SEC LEAD CLRS LEAD CLRS LEAD CLRS H1 H2 X1 X2 X1 X2 BLK RED BLK WHT YEL BLU BLK ORG BLK WHT YEL BLU BLK BRN BLK WHT YEL BLU BLK BLK RED BLK WHT YEL BLU fo ot 208 240V Fuse Block o7 208 240V 0 04 3g Power 30 Power 60 Hz a Fused Switch By Others Cutout XFMR Contactors
4. 2 Use 90 C Wire Copper conductors only t Conduit knockout location top of Junction Box 3 Standard units have two contactors Units with separate fan motor control use three contactors IMPORTANT Failure to understand and follow these installation instructions and the WARNING notes therein may result in serious personal injury from electrical shock or from the heater falling due to faulty installation WARNING This heater is not intended for use in hazardous atmospheres where flammable vapors gases liquids or other combustible atmospheres are present as defined in the National Electrical Code Failure to comply can result in explosion or fire For these applications see PDS CXH EP PF305 WARNING Hazard of Shock Disconnect all power before installing heater The heater must be mounted at least 7 above the floor to prevent accidental contact with the heating elements or fan blade which could cause injury The ceiling structure the brackets hangers or chains used to sus pend the heater and the anchoring provisions must be of sufficient strength to support the total weight of the heater installation 250 pounds for VUH C 30 40 50 plus the weight of the supports 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 On Models connected to three phase power
5. Switch By Others 208 240V Motor Hook Up Cutout a Contactors Control Power By Others Fuse Block Fused Switch By Others 208 240V Motor Hook Up Stage 1 Q ener OW WWE WW Contactors Fuse Te H 208 240V Loo eee eeg Block 3 Power 60 Hz Fused Switch By Others loo 1920 Fuse Block 3 Power 60 Hz oH 208 240V Figure 6 170 057688 014 Notes 1 C2 Must Be Con nected To 1st Stage Of Thermostat 2 For Single Stage Operation Jumper C2 amp C3 Figure 7 170 057688 015 Notes 1 C2 Must Be Con nected To ist Stage Of Thermostat 2 For Single Stage Operation Jumper C2 amp C3 Figure 8 170 057688 016 Notes 1 C2 Must Be Con nected To 1st Stage Of Thermostat 2 For Single Stage Operation Jumper C2 amp C3 480V Motor Hook Up WIRING DIAGRAMS Transformer Color Cade Index PRIXFMR 120V SEC 24V SEC LEAD CLRS LEAD CLRS LEAD CLRS H1 H2 X1 X2 X2 208 240V Motor Hook Up BLK RED BLK WHT BLU BLK ORG BLK WHT BLU To Fuses BLK BRN BLK WHT BLU Optional Heat BLK BLK RED BLK WHT BLU
6. A actor 120V Coil 50A 072 303180 007 072 303180 008 Con Con actor 208V 240V Coi actor 208V 240V Coi 072 303180 003 072 303180 014 Con Con actor 208V 240V Coi actor 208V 240V Coi 072 303180 003 072 303180 014 CO CW v amp v NU U NU UJV vJ NU KTK 4 128 047763 008 2 Note Number in parentheses indicates quantity required of that part Elements and Motor Motor Part No Item No 2 Element Part No Item No 1 118 130486 009 6 118 130486 001 6 118 130486 002 6 Fusing 118 130486 009 6 Fan Motor 193 057646 001 118 130486 005 6 118 130486 008 6 Grille Contactor Heating Element Transformer Fan Blade Overheat Cutout Limited Warranty Please refer to the Chromalox limited warranty applicable to this product at http Awww chromalox com customer service policies termsofsale aspx Chromalox PRECISION HEAT AND CONTROL 2150 N RULON WHITE BLVD OGDEN UT 84404 Phone 1 800 368 2493 www chromalox com
7. Chromalox Installation Operation SERVICE REFERENCE and REFERENCE Supersedes PF452 3 PF452 4 RENEWAL PARTS IDENTIFICATION 161 057824 001 pate JULY 2002 Type VUH Vertical Unit Heater Position With Junction Box Note Facing Away f Knockout Location rf 48 Min From Walls 4 11 16 Dia A See Table 2 t ATA ate FofEasy Access Mounting For Recommended pe y 2 Min Holes Conduit Size pprox KI eee SS SS o i ES EE 5 4 11 16 Dia mrg M Mounting Holes l 4 4 l AN in t To Floor Warm Air Discharge Fuse Box Used On Heater Rated Over 48 Amps Figure 1 Figure 2 Specifications Table 1 Heating Capacity Volts Air Delivery Dimensions In Outlet kW BTUH 1 Phase 3 Phase FPM Temp F E VUH C 30 102 000 VUH C 40 136 000 VUH C 50 170 000 Based on 60 F entering air For instructions on VUH units rated S 10 kW refer to Bulletin PF450 For instructions on VUH unites rated IS 25 kW refer to Bulletin PF451 2010 Chromalox Inc Table 2 Electrical Data Power Supply Circuit Contactor Line Line Wire Amps Size No Note 1 Note 2 Circuits Holding Coil Volt Amperes Note 3 Minimum Conduit Size t Inrush Sealed 1 Includes Fan Motor Amps
8. angers or chains to support the heater are sup plied by the customer 4 All wiring should be done in accordance with the National Electrical Code and with local codes by a qualified person as defined in the NEC WARNING Use copper conductors only 5 Rough in wiring to heater See Table 2 for line amperes rec ommended 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 WARNING On Models connected to three phase power fan blade rotation must be checked if the airflow is not downward Interchange any two of the three customer power leads 8 Air diffusers for deflecting the air are optional See Instruction Sheet PF449 for installation instructions MAINTENANCE WARNING Hazard of Shock Disconnect all power to heater before servicing or replacing heaters Do not attempt to service heater while unit is operat ing as there is hazard of electric shock injury from operating fan and burns from hot heating ele ments 1 Before activating for next heating season vacuu
9. fan blade rotation must be checked If the airflow is not downward interchange any two of the three customer power leads First stage of thermostat must be connected to terminals C1 and C2 to insure proper operation of overheat protective devices INSTALLATION WARNING Hazard of Shock Any installation involving electric heaters must be effectively grounded in accordance with the National Electrical Code 1 Heater should be positioned with junction box facing away from walls to provide easy access for servicing relay s mount ed within WARNING Mount the heater for down discharge only 2 It is important that 12 minimum dimension shown in Figure 1 be maintained to make it possible for a serviceman to remove the fan motor if necessary without moving the heater from its mounting WARNING The heater must be mounted at least 7 above the floor to prevent accidental contact with the heating elements or fan blade which could cause injury The ceiling structure the brackets hangers or chains used to sus pend the heater and the anchoring provisions must be of sufficient strength to support the total weight of the heater installation 250 pounds for VUH C 30 40 50 plus the weight of the supports 3 The heater may be mounted to the ceiling by attaching rigid angle brackets hangers or chains to the four mounting holes on top of the heater case using four 54 bolts by others See Figures and 2 Note Brackets h
10. m or use com pressed air to remove accumulated dust or lint which other wise may restrict proper air flow 2 Periodically check all electrical connections and retighten to avoid electrical wiring difficulties Figure 3 170 057688 011 Notes 1 C1 Must Be Con nected To ist Stage Of Thermostat 2 For Single Stage Operation Jumper C1 amp C3 Figure 4 170 057688 012 Notes 1 C2 Must Be Con nected To 1st Stage Of Thermostat 2 For Single Stage Operation Jumper C2 amp C3 Figure 5 170 057688 013 Notes 1 C2 Must Be Con nected To ist Stage Of Thermostat 2 For Single Stage Operation Jumper C2 amp C3 WIRING DIAGRAMS 480V Motor Hook Up Transformer Color Code Index PRI XFMR LEAD CLRS 120V SEC LEAD CLRS 24V SEC LEAD CLRS H1 H2 X1 x2 X1 X2 BLK RED BLK WHT YEL BLU To Fuses ORG 208 240V Motor Hook Up WHT YEL BRN WHT YEL BLK RED WHT YEL Customer Wiring Factory Wire 480V Motor Hook Up To Fuses 2 Stage T Stat By Others Customer Wiring Factory Wire 2 Stage T Stat By Others Customer Wiring Factory Wire Contactors Cutout XFMR Fusing Optional Coo oro Stage 1 Q O S eee Fuse Block qe Fused
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