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®
Chromalox
SERVICE REFERENCE
Installation
DIVISION 4 SECTION LUH
and
SALES
(Supersedes PF479-5)
REFERENCE PF479-6
RENEWAL PARTS IDENTIFICATION
161-303474-001
DATE JANUARY, 2003
Type LUH
Horizontal Unit Heater
Specifications — Table 1
Electrical Data (60 Hz) Dimensions (In.) Standard
Model Contactor
Volts Watts Phase Amps BTU Height Width Depth Rating (Qty.)
LUH-D-02-81 208 2,667 1 12.8 30A (1)
LUH-D-0
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Exposed Exposed Exposed IMPORTANT Failure to understand and follow these installation instruc- Do not mount mercury type thermostat directly on unit. tions and the “WARNING” notes therein may result in serious per- Vibration could cause heater to malfunction. sonal injury from electrical shock, or from the heater failing due to The heater must be mounted at least 7' above the floor to pre- faulty installation. vent accidental contact with the heating elements or fan blade which could cause injur
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® Chromalox INSTALLATION BACK WALL Threaded Mounting Holes G S I D L E I W A X L L Figure 2 Rod Spacing Table 4 — Rod Thread Type and Spacing Dimensions (In.) for Horizontal Discharge Dimensions (In.) Rod Unit Thread Figure 3 Wall and Ceiling Clearance (Table 2) IG L X Type 2 - 5kW 5/16 - 18 4-1/2 5-1/2 2-3/4 2-1/4 7-1/2 - 15kW 3/8 - 16 6-1/4 8-1/4 4-1/8 3-1/8 20 - 25kW 3/8 - 16 6-1/4 8-1/4 4-1/8 3-1/8 30 - 45kW 3/8 - 16 11-3/4 8-1/4 4-1/8 5-7/8 Note: W = Minimum Distance to One 11/16" mountin
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WIRING 3. Consult the local wiring code in your area. SUMMER FAN SWITCH (MOUNTED ON FRONT OF HEATER). When the switch handle is pointing toward the “SUM- ELECTRIC SHOCK HAZARD. Disconnect all power MER” position, the fan will run continuously. When the switch before installing or servicing heater. Failure to do handle is pointing toward the “WINTER” position, the fan will run so could result in personal injury or property dam- only when the heating elements are hot. age. Heater must be installed
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WIRING DIAGRAMS Optional Field Wiring Thermostat Optional Built-in Or Field Installed To Element Wiring 1 Phase 2 Or 3 Elem 3 Phase Delta Built-in Or Field Installed Summer Fan Switch Factory Wiring To Element Wiring Built-in Or Field Optional Thermostat Cutout Installed Built-in Or Field Installed Cutout 1 2 MOTOR 3 Phase Delta X1 X2 3 Motor 7 1O OR 3O 1Ø Or 3Ø T1 T2 T3 T1 T2 T3 T1 T2 T3 9 8 C1 C1 XFMR 10 C1 11 X1 X2 12 T1 T2 T3 3O Wiring Only L1 L3 L1L2L3 H1 H2 C1 XFMR T1 T2 T3 C1 3Ø Wiring On
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WIRING DIAGRAMS Field Installed Field Installed Elements Elements Built-in Or Field Installed Built-in Or Field Installed To Element Wiring Factory Wiring Motor Factory Wiring Optional Optional 3o Thermostat Optional Fan Relay Stage 1 Stage 2 Built-in Or Motor Thermostat Built-in Or 1 Phase 2 Or 3 Elem Built-in Or Field Installed Field Installed 1Ø Or 3Ø Fuses Field KTK-3 Cutout Installed C1 C2 2 1 T1 T2 T3 T1 T2 T3 T1 T2 T3 T1 T2 T3 3 T1 T2 T3 C3 C1 C1 Contactor (Typ.) C2 C3 7 X1 X2 C1 Cutout
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RENEWAL PARTS IDENTIFICATION MANUFACTURER PART NUMBER BREAKDOWN FOR MADE TO ORDER UNITS (LOCATED ON UNIT NAMEPLATE) L U H D Heater Wiring Heater Wiring Code Description Line Volts Part No. Figure Code Description Line Volts Part No. Figure Element Motor Fan 00-40 Thermostat DP All 300-049197-004 Code Disconnect Disconnect 32-45 Contactor (120) 30A All 072-303180-007 Code kW Volts Phase Part No.
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WIRING DIAGRAMS C2 Elements Elements Elements Optional Thermostat Elements Field Wiring T1T2T3 T1T2T3 Motor Built-in Or Built-in Or Field Installed C1 Contactor C2 3Ø Field Installed Factory Wiring Stage 2 Stage 1 Stage 1 Stage 2 Fuses Fan Relay Motor KTK-3 C3 3Ø Optional Thermostat C2 Built-in Or T1T2T3 T1T2T3 Field Installed 1 2 Contactor Standard Motor Connection C2 Contactor C1 T1 T2 T3 T1 T2 T3 3 C3 Contactor C1 C2 7 Cutouts Cutouts (Typ.) 9 8 1 2 Motor 10 11 3 3Ø 12 7 Fuses KTK-3 9 8 10 11
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Limited Warranty: Please refer to the Chromalox limited warranty applicable to this product at http://www.chromalox.com/customer-service/policies/termsofsale.aspx. 2150 N. RULON WHITE BLVD., OGDEN, UT 84404 Phone: 1-800-368-2493 www.chromalox.com
