ETHP100 Service Manual - Temp-Air
Contents
1. TEMP HEAT ETHP 100 Electric Construction Heaters Installation and Service Manual 1 800 836 7432 Introduction issuer rec gk ey HREPSAUTERAREESVOPEDERMR DOE ENG 2 Rating Information 0 00 eect teen ene ees 2 Control Functions i22221 2 du eee ee bee eee e ee 3 Control Adjustments oe Reb exa ere mE RR wes 3 Set up Steps Sce neERE THEE RI IR Rex C AI EU RR SIR 4 Clearance from Combustibles 0 0c cece cee eee 4 Pre Start Check Iusti ect hae ee ae ee ede V Bee 5 Start Up Steps i eo ERESHERMVe tA Mee lt e ER SAN Le as 6 Temporary Shut Down Steps 0 0 cece e e nent n ees 6 Unit Disconnect or Relocation 00 cece cece eee ees 6 Heating Vestibule Layout 2c oet o pev rue yadee tes gen ERRARE gh ees 7 C li Wiring Diagram ETHP 100 1 0 0 0 ees 8 oong Wiring Sequence of Operation 0000s 9 Troubleshooting srie e a a n aa e n d ee Es 10 Dehumidifying Ventilating This manual is the property of the owner Leave with the unit when set up and start up are complete For your safety do not use this heater in a space where gasoline or other liquids having flammable vapors are stored or used TRUPP INDUSTRIES INC Introduction The RUPP Model ETHP 100 Electric Construction Heaters are temporary electric heaters for use in non hazardous locations The unit may be installed indoors or out and used to bring in 100 outdoor air or heat and re circulate building2. air The control system is intended for space heating applications A room sensor is supplied as the main control There is a second discharge temperature control which overrides the room control if the room control attempts to drive the discharge temperature too high Both controllers modulate heat output on proportional cycle time output generated by the controller At low temperature output the controller is ON for a small portion of the cycle 0 10 second in a 1 0 second cycle At higher temperature output the controller output stays ON for a longer portion of the cycle For example if the controller calls for 80 output the discharge controller runs for 0 80 second during every 1 0 second cycle This type of control provides smooth and continuous control of the heater from zero to 10046 output and can be optimized for use with generators as well as with permanent power systems Coils are energized through solid state Silicone Controlled Rectifier relays SCR allowing rapid cycle times without the worry of relay contract burnout Rating Information voltage 460 10 amps 150 Electrical Requirements phase Bek hertz 60 kW 100 voltage 480 kW 10 control SCR element type fin tubular maximum temperature rise 120 F maximum discharge air temperature 180 F operating 10 to 130 F Coil Specifications 4 digital space temperature control 50 to 90 F Temperature Control Range digital discharge override control 50
3. to 190 F Motor Horsepower Dimensions 1 x w x h inches 59 x 26 x 49 floor inches Minimum distance from top inches combustible materials sides inches discharge feet Based on digital space control with digital discharge temperature Phase imbalance 3 ETHP 100 Installation and Service Manual 2 TEMP HEAT Control Functions Thermostat Senses room temperature and adjusts heater output to maintain desired room temperature Air Flow Switch Verifies that proper air flow through unit is present before heating elements can be energized High Temperature Limit Shuts power off at unit s main circuit breaker in an overheating condition Control Adjustments Air Flow Control Setting Control 1 Turn ON OFF switch ON mdjnum o ea 2 With unit operating check voltage with voltmeter at Terminals 2 and 6 Turn adjusting screw clockwise until voltage drops 3 Turn adjusting screw counter clockwise 1 2 turn at a time until voltage is restored Airflow Control ETHP 100 Installation and Service Manual 3 TEMP HEAT Pre Start Checklist e Heater must be level and in compliance with minimum clearance and minimum distance requirements for combustible material See Rating Information Table on page 2 e Block wheels to prevent movement e Turn heater circuit breaker to OFF Turn OFF BLOWER HEAT switch to OFF e Install wiring cable from power supply to heat
4. 1 9 to CO When Terminal 9 is energized solid state contactors CO 01 through CO 03 provide power to the heating coil elements The solid state contactors cycle in accordance with the PID controllers varying the heat output of the unit ETHP 100 Installation and Service Manual Troubleshooting Problem Unit will not start Controller display does not illuminate Unit will not start Green ground fault indicator light ON Controller display working and bower will not start Blower runs no heat Blower runs unit heats but not enough to heat space Probable Cause No power to unit Blown fuse Main circuit breaker tripped High temperature limit switch tripped Ground fault Motor saver out of adjustment or defective OFF BLOWER HEAT switch in OFF position Motor overload tripped Loose or broken belt or drive Defective motor OFF BLOWER HEAT switch in BLOWER position Room thermostat not cancelled Setting on discharge or room controller too low Air flow switch out of adjustment or defective Defective controller Defective silicon relays Room or discharge controller improperly set Room thermostat is located in warm area Heater not properly sized for space TEMP HEAT Check Voltage at main supply power and circuit breaker Check Motor and control circuit fuses Replace if necessary Reset main Circuit breaker Reset limit and determine cau
5. MS 01 11 to 4 Terminal 4 receives power from Terminal 11 through the OFF BLOWER HEAT switch SW 02 completing the circuit to the blower motor starter which starts the blower 11 to 5 Terminal 5 receives power from Terminal 11 only when the OFF BLOWER HEAT switch is in the HEAT position to 6 With proper air flow through unit Terminal 5 supplies power to Terminal 6 through the low air flow switch PS 01 6 to 7 If proper air flow is present Terminal 7 receives power from Terminal 6 through the blower motor starter interlock ST 01 6 to 6a When discharge air temperature is below set point on TS 05 power is supplied to Terminal 7 7 AC 01 To AC 01 AC 02 amp AC 03 Power supplied to coil contactor allowing main heating to AC 02 circuits to become energized 7 to 8 Terminal 8 receives power from Terminal 7 through Silicon Controlled Relay SR 02 8 to 9 Terminal 9 receives power from Terminal 8 through Silicon Controlled Relay SR 01 These relays cycle ON and OFF controlled by the PID controllers If either the discharge temperature or the room temperature reach the set point of the controller the controller reduces the heat output to maintain setpoint 11 to PID Both PID controllers discharge and room temperature receive power from Terminal 11 through the Motor Saver MS 0
6. e discharge sensor or room temperature controller reaches its set point 11 Set OFF BLOWER HEAT switch for desired operation 12 To ensure maximum heating capacity set Discharge Temperature Controller at 1809 F 13 Set Room Temperature Controller at desired room temperature Shut Down Steps 1 Tum OFF BLOWER HEAT switch to BLOWER position 2 Allow blower to run for several minutes to cool the coil element and casing before turning OFF BLOWER HEAT switch to OFF 3 Turn unit circuit breaker to OFF Unit Disconnect or Relocation Turn main power supply OFF Disconnect power supply cables from unit Disconect room thermostat quor 9 pi Secure doors and access panels before moving ETHP 100 Installation and Service Manual 6 TEMP HEAT Wiring Sequence of Operation When the Main Circuit Breaker CB 01 is turned ON power is supplied to the line side of the Electric Coil Contactors AC 01 through AC 03 to the line side of the Supply Fan Motor Starter MT 01 to the primary side of the Control Voltage Transformer TR 01 from the secondary side of the Control Voltage Transformer through the Control Fuse FU 02 to Terminal 1 to the line side of the motor saver MS 01 and Terminal 2 is neutral 1 Terminal 1 provides power to the Motor Saver MS 01 2 Terminal 2 is neutral I to 11 Terminal 11 receives power from Terminal 1 through the ground fault protector
7. er e Check cable for proper wire size and that these connections are secure e Check power supply voltage and ampacity e Unit must be properly grounded e Check that air intake is free from obstruction e Plug thermostat into thermostat jack on heater Mount in area away from discharge air stream ground alarm light OFF BLOWER HEAT switch room controller Cam loc power connectors Main disconnect switch discharge controller Heat ON light thermostat jack Typical Switch Panel ETHP 100 Installation and Service Manual TEMP HEAT K Set Up Steps Positioning e Installation must comply with all federal state and local codes e Heater must be level and in compliance and minimum distance requirements for combustible material e Block wheels to prevent movement Locate heater away from general traffic while allowing ample area for inspection and service e The inlet and discharge of the unit must be kept free of obstacles The intake air will draw paper and other debris to it which interferes with the unit s operation e Select an area that provides good air circulation and even heat distribution to the area being heated Clearance from Combustibles The discharge temperature of these units may reach 180 F for standard unit and 250 F for high static unit Maintain minimum distance from combustible materials as follows sides 6 inches top 6 inches bottom 6 inches discharge 15 feet ETHP 100 Insta
8. ers product and service requirements gm RUPP One Rupp Plaza 3700 West Preserve Boulevard Burnsville Minnesota 55337 7746 1 800 836 7432
9. llation and Service Manual 4 TEMP HEAT Vestibule Layout Item Number Description C C C eeemesuei ETHP 100 Installation and Service Manual TEMP HEAT K Start Up Steps 1 Turn power ON at source If ground alarm light comes on check that unit is properly grounded If light continues to glow after unit has been properly grounded see the Troubleshooting section on page 10 2 Check voltage with voltmeter A minimum of 90 of the rated voltage must be present Do not operate the unit if voltage difference between phases exceeds 3 Correct power supply or wiring to unit See Rating Information Table on page 2 3 Do not operate unit while doors are open or access panels are missing 4 Turn main heater circuit breaker ON Discharge controller and room controller displays turn ON 5 Turn OFF BLOWER HEAT switch briefly to the BLOWER position then back to OFF 6 Observe blower rotation as blower stops If rotation is incorrect turn power OFF and reverse any two 2 power supply leads and recheck rotation direction 7 Setroom controller at desired room temperature Plug thermostat into thermostat jack on heater 9 Set discharge controller at 1809 F To set controller Press and hold the key set temperature using the arrow up down keys See illustration on page 8 10 Tum OFF BLOWER HEAT switch to HEAT position The blower will start and the electric coils will run at full output until th
10. se of trip Unit must be properly grounded Adjust voltage trip level to 180 volts Replace if necessary Select BLOWER or HEAT position Reset overload and check voltage at motor Repair or replace as necessary Replace Select HEAT position Plug thermostat into thermostat jack on heater securely Mount in area away from discharge air stream Set discharge controller at maximum 180 F Set room controller at desired room temperature Check for air flow obstructions Check belt tension Adjust for 1 deflection See page 3 for air flow switch adjustments Replace air flow switch if required Check controller and replace if necessary Replace relay Set discharge controller at maximum 180 F for high static unit Relocate room thermostat Contact TEMP HEAT TEMP HEAT Boston MA 800 666 8133 fax 508 624 0036 Chicago IL 800 283 2843 fax 847 931 7704 Cleveland OH 800 443 3301 fax 330 721 7742 Columbus OH 800 444 3481 fax 614 471 1933 Denver CO 800 577 7053 fax 303 783 8579 Detroit MI 800 678 1488 fax 248 526 9527 Duluth MN 888 539 5438 fax 218 722 6701 Minneapolis MN 800 836 7432 fax 612 707 5104 Newark DE 800 232 7419 fax 302 369 8022 Watertown WI 800 558 9209 fax 920 261 4523 RUPP Industries Inc manufactures sells and rents commercial industrial and construction equipment Our employees our most valuable asset are dedicated to finding innovative solutions that fulfill our custom
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