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Series

Shutdown Procedures:



Set the thermostat to the lowest setting.



Turn OFF all electrical power to the appliance if service is to be performed.



Turn manual shut off knob clockwise

to OFF.

Do not

force.

If the heater’s internal diagnostic LED displays any of the signals listed in Charts 4.1-4.2, address the
indicated problem as outlined.

Chart 4.1 •

LED Diagnostic Codes - United Technologies Circuit Board

Chart 4.2 •

LED Diagnostic Codes - Fenwal Circuit Board

LED CODE

(# of flashes)

GREEN LED STATUS / ERROR

STEADY OFF

Internal Control Fault or No Power

STEADY ON

Control Ok

In Lockout from Failed Ignitions or Flame Losses

Pressure Switch Open with Inducer ON

Pressure Switch Closed with Inducer OFF

Limit Switch is OPEN

In Lockout from False Flame

LED CODE

(# of flashes)

AMBER LED STATUS / ERROR

FAST FLASH

Flame Present With Gas Valve Off

STEADY ON

Flame is Sensed

4.0

Operation

•

Shutdown Procedures

LED CODE

(# of flashes)

GREEN LED STATUS / ERROR

SLOW FLASH

Normal Operation - No Call for Heat

FAST FLASH

Normal Operation - Call for Heat

Ignition Lockout - No Flame Detected

Airflow Fault - Pressure Switch Open or Closed

High Limit or Rollout Switch Open

Flame Sense Error - Gas Valve Not Energized

STEADY ON

Internal Control Failure

LED CODE

(# of flashes)

AMBER LED STATUS / ERROR

OFF

Flame Signal is Below Required Level / No Flame Present

STEADY ON

Flame is Sensed

Содержание UH-30

Страница 1: ...ation or death Detroit Radiant Products Company UH Series Manual The UH Series heater is a gas fired unit heater This manual provides specific information related to the UH Series models All persons i...

Страница 2: ...Gas Supply Installation Instructions 17 Leak Testing 20 Electrical Requirements and Wiring Diagrams 21 Internal Wiring Diagrams 21 Field Wiring Supply Voltage 22 Thermostat Connection 24 Thermostat Lo...

Страница 3: ...roperty of the owner and must stay with the owner or unit after installation is complete Heater Components Prior to installation verify that the heater s gas type and voltage as listed on the rating p...

Страница 4: ...se of the unit s weight see Chart 1 1 Adequate space around the heater must also be considered in order to maintain the published minimum clearance to combustibles and recommended service clearances W...

Страница 5: ...es must always be maintained Figure 1 2 Dimensional Data see Chart 1 1 for Physical Dimensions Model Number Cabinet Number Gas Type BTU h Input BTU h Output Physical Dimensions Standard Weight Recomme...

Страница 6: ...INPUT DEBIT CALORIFIQUE HEAT OUTPUT REDENMENT VENT CATAGORY VENT CAT GORIE TYPE OF GAS TYPE DE GAZ BTU h BTU h VOLTAGE AMPS PHASE FREQUENCY Hz VAC MANIFOLD PRESSURE PRESSION A LA TUBULURE D ALIMENTAT...

Страница 7: ...ries 1 0 Introduction Safety Labels and Their Locations Service Access Door View Inside View F N LLWUH001 Wiring Diagram F N LLUHCL001 For Your Safety F N LLUH006 UH Vent Length Notice F N LLUH001 LED...

Страница 8: ...otentially hazardous situation which if not avoided could result in death or injury Caution indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury No...

Страница 9: ...industrial and commercial buildings such as warehouses manufacturing plants aircraft hangars and vehicle maintenance shops For maximum safety the building must be evaluated for potential problems befo...

Страница 10: ...areas heaters shall be installed at least 10 ft 3 m from above the upper surface of wings or of the engine enclosures of the highest aircraft that may be housed in the hangar The measurement shall be...

Страница 11: ...w to derate The type of gas appearing on the nameplate must be the type of gas used Installation must comply with national and local codes and requirements of the local gas company Non Standard BTU Ga...

Страница 12: ...to determine the required distances for your model Placement of explosive objects flammable objects liquids and vapors close to the heater may result in explosion fire property damage serious injury...

Страница 13: ...s on the Left Side 1 For standard control access remove the four 4 10 sheet metal screws and mounting bracket along the top edge of both the front and back of the unit 2 Install the front bracket as s...

Страница 14: ...ag bolts are not stripped and are properly bearing the load of the unit heater 1 inch angle mounting brackets are slotted to accommodate joists on 16 inch or 24 inch center lines Figure 3 2 Mounting B...

Страница 15: ...heater in an inverted position of 180 from the standard configuration a few items must be configured to accommodate this installation Rotated 180 Installation Control Panel is on the Right side 1 For...

Страница 16: ...ndle 180 Secure handle in new position with retained screws 3 Reinstall the service access door positioning the sight glass in line with the burners The handle should now taper up towards the new top...

Страница 17: ...ns WARNING Improperly connected gas lines may result in serious injury and death explosion poisonous fumes toxic gases or asphyxiation Connect gas lines in accordance to national state provincial and...

Страница 18: ...rt for the appropriate range of inlet pressures for each gas type When sizing the inlet gas pipe diameter make sure that the unit supply pressure can be met after the 0 3 inch W C pressure drop has be...

Страница 19: ...in the lowest spot prior to connecting to the heater The trap length shall be at least three inches long Ideally the trap would be installed as close as possible to the shut off as shown in Figure 3 4...

Страница 20: ...se the field installed manual shut off valve disconnect the supply line to the unit and temporarily cap the supply line for testing purposes WARNING Use a soap solution or equivalent for leak testing...

Страница 21: ...ust be observed when making field connections Internal Wiring Diagrams Before wiring this appliance check the existing wiring replace if necessary If any of the original wire supplied with the applian...

Страница 22: ...rom the service access panel The main electrical supply enters at the rear of the heater utilizing 1 2 electrical knock out See Figure 3 6 When routing the electrical supply conduit to the unit ensure...

Страница 23: ...box for use as a service disconnect L1 Ground L2 Neutral Black to L1 Hot White to L2 Neutral Green Ground Junction Box Flexible Conduit BX or Romex Connector Route the field supplied power wires so t...

Страница 24: ...e thermostat terminal designations are as follows R 24VAC Power W Call for Heat G Continuous Fan C Common for 24VAC Power 24VAC is supplied from an internal 40VA transformer Do not supply 24 Volts to...

Страница 25: ...where it could be influenced by heat from the unit or other sources as this may cause the unit to short cycle Care should be given to locate the thermostat away from drafts or frequently opened doors...

Страница 26: ...leakage corrosion or other deficiencies that can cause hazards The vent pipe should be corrosion resistant galvanized steel of a thickness that meets the National Fuel Gas Code Minimum thickness for c...

Страница 27: ...tibles The equivalent length for a 3 inch 90 elbow is 3 feet The equivalent length for a 4 inch 90 elbow is 5 feet Avoid using more than two 90 directional changes in the venting system Horizontal sec...

Страница 28: ...meter must be used If there is 6 feet or more of vent pipe prior to passing through the combustible wall or floor then the metal thimble need only be 2 inches greater than the vent pipe diameter If a...

Страница 29: ...ry I Vertical venting is venting at a non positive pressure A furnace vented as a Category I is considered a fan assisted appliance and the vent system does not have to be gas tight It is recommended...

Страница 30: ...eal vent pipes with high temperature sealant and three 3 8 sheet metal screws Vent enclosed spaces and buildings according to the guidelines in this manual and applicable national state provincial and...

Страница 31: ...d to prevent blockage by snow and protect building materials from degradation by flue gasses The vent cap must be a minimum of 6 inches from the sidewall of the building Vent must be a minimum of 36 i...

Страница 32: ...as elbows should be minimized Each elbow installed within the common portion of the vent carrying system reduces the maximum common vent capacity by 10 Refer to NFPA 54 IFEC tables 11 2 and 11 3 for c...

Страница 33: ...ferred to as a Separated Combustion on page appliance This heater must operate as a separated combustion system if any of the following criteria apply Chemicals such as chlorinated or fluorinated hydr...

Страница 34: ...tape or silicone sealant Wrap the tape two full turns around the vent pipe Slope air intake pipe inch per foot upward or downward away from the unit as shown in Figure 3 12 Do not draw air from attic...

Страница 35: ...de View Roof Listed Exhaust Cap 18 in Min Combustion Air Intake Cap Heater Heater Exhaust Terminal Cap P N DB 208 or SWD 4 Clean out Tee Combustion Air Intake Cap P N DB 208 or SWD 4 Vent Termination...

Страница 36: ...otherwise Contact the factory for further determination of the air infiltration rates The heater shall be located so as not to interfere with proper circulation of combustion air A minimum clearance...

Страница 37: ...NFPA 70 or Canadian Electrical code CSA C22 1 Part 1 9 9 The unit is properly mounted to a permanent structure able to bear the weight of the unit 9 9 The proper mounting height is observed for the ap...

Страница 38: ...device which automatically lights the burner This unit heater cannot be lighted manually Do not try to light the burner by hand Verify minimum inlet gas supply pressure 7 Turn on all other gas applian...

Страница 39: ...ifold pressure follow the following steps 1 Turn off the gas valve with the switch located on the valve body see Figure 3 15 2 Remove the manifold pressure tap plug on the gas control valve see Figure...

Страница 40: ...urn off the gas valve with the switch located on the valve body see Figure 3 15 13 Remove the pressure gauge tube and the manometer 14 Replace the manifold pressure tap plug on the gas control valve 1...

Страница 41: ...starting threads by hand Take care not to cross thread the orifices See Charts 3 5 through 3 7 for proper kit number and orifice size 7 Tighten gas orifices to a torque of 150 inch pounds No thread se...

Страница 42: ...60 DMS UH 45 3 HKN 51_3 HKP 60_3 51 DMS 60 DMS UH 60 4 HKN 51_4 HKP 60_4 51 DMS 60 DMS UH 75 5 HKN 51_5 HKP 60_5 51 DMS 60 DMS Model Number of Orifices Kit Number Orifice Size Natural Gas Propane Natu...

Страница 43: ...ure is achieved the differential switch will close initiating the ignition sequence The control energizes the spark and main gas valve for 10 seconds If the flame is not sensed the control will attemp...

Страница 44: ...out from Failed Ignitions or Flame Losses 2 Pressure Switch Open with Inducer ON 3 Pressure Switch Closed with Inducer OFF 4 Limit Switch is OPEN 5 In Lockout from False Flame LED CODE of flashes AMBE...

Страница 45: ...45 UH Series This page intentionally left blank...

Страница 46: ...commended lengths No Check for loose wiring or restrictions in the hose connection to the pressure switch Are they acceptable No Does the electrode appear to be physically damaged Temporarily disconne...

Страница 47: ...a of intake e g high winds attic space tightly sealed building Monitor the voltage on the gas valve terminals during trial for ignition Is there 24 VAC present during the spark sequence Yes Gas valve...

Страница 48: ...t and then shut off immediately within 1 2 seconds Check inlet pressure and limit switches Yes Does the burner stay on for approximately 8 10 seconds and then shut off Check circuit board for flash co...

Страница 49: ...nologies Circuit Board LED CODE of flashes GREEN LED STATUS ERROR STEADY OFF Internal Control Fault or No Power STEADY ON Control Ok 1 In Lockout from Failed Ignitions or Flame Losses 2 Pressure Switc...

Страница 50: ...e burner assembly mounting screws With the burner removed wire brush the inside surfaces of the heat exchanger 4 Remove any dirt dust or other foreign matter from the burners using a wire brush or com...

Страница 51: ...vide product information and illustrate the products in this literature accurately however such information and illustrations are for the sole purpose of identification and do not express or imply a w...

Страница 52: ...463 202 203 690 601 1106 211 114 115 329 327 701 425 421 441 722 723 732 733 705 712 713 213 400 410 623 1101 450 422 550 215 282 554 630 551 552 614 214 236 235 263 200 52 UH Series 5 0 Maintenance H...

Страница 53: ...5 Burner Chamber Sides UF 232 1 4 Lock Washer UF 712 Manifold Pipe 2 Burner UF 235 10 Flat Washer UF 713 Manifold Pipe 3 Burner UF 236 10 Rubber Washer UF 722 Burner Mounting Rail 2 Burner UF 242 Stra...

Страница 54: ...202 203 690 601 2106 211 114 115 329 327 702 425 421 441 724 725 734 735 705 714 715 213 400 410 623 2101 450 282 261 422 242 614 200 614 554 551 630 552 236 235 263 215 214 54 UH Series UH Series Cab...

Страница 55: ...r UF 714 Manifold Pipe 4 Burner UF 235 10 Flat Washer UF 715 Manifold Pipe 5 Burner UF 236 10 Rubber Washer UF 724 Burner Mounting Rail 4 Burner UF 242 Strain Relief Bushing Cordgrip UF 725 Burner Mou...

Страница 56: ...sphyxiation death and fire or property damage Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any appliance Do not use this heater in indoor living or sle...

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