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Since the American-Standard Company has a policy of continuous product improvement, it reserves the right to change
specifications and design without notice. The installation and servicing of the equipment referred to in this booklet should
be done by qualified, experienced technicians.

Electric

Unit Heater

Library

Service Literature

Product Section

Air Terminal Devices & Heating Products

Product

Unit Heaters — Electric

Model

UHEC

Literature Type

Installation/Maintenance

Sequence

7A

Date

February 1997

File No.

SV-TD-UH-UHEC-IM-7A-297

Supersedes

EUH-IM-7A-895

Installation
Maintenance

UHEC-IM-7A

Model UHEC

9597

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Содержание UHEC-IM-7A

Страница 1: ... referred to in this booklet should be done by qualified experienced technicians Electric Unit Heater Library Service Literature Product Section Air Terminal Devices Heating Products Product Unit Heaters Electric Model UHEC Literature Type Installation Maintenance Sequence 7A Date February 1997 File No SV TD UH UHEC IM 7A 297 Supersedes EUH IM 7A 895 Installation Maintenance UHEC IM 7A Model UHEC ...

Страница 2: ...Figure 5 Ceiling Hanger Bracket Installation 13 Figure 5a Heaters 7 5 KW 10 KW 25 KW 30 KW 40 KW 50KW 13 Figure 5b Heaters 15 KW and 20 KW Unit Wiring Diagrams 18 Figure 6 Models UHEC031A0C0 031B0C0 031C0C0 051A0C0 051B0C0 and 051C0C0 19 Figure 7 Models UHEC031AACA 051AACA 031CACA 051CACA 071CACA and 101CACA 20 Figure 8 Models UHEC032AACA and 052AACA 21 Figure 9 Models UHEC031BACA 051BACA 032BACA ...

Страница 3: ...E Unit Heater Electric Digit 4 Development Sequence C Development Sequence Digits 5 6 Kw Rating 03 3 3 Kw 05 5 0 Kw 07 7 5 Kw 10 10 0 Kw 15 15 0 Kw 20 20 0 Kw 25 25 0 Kw 30 30 0 Kw 40 40 0 Kw 50 50 0 Kw Digit 7 Element Phase 1 Single Phase Not available w 480 volt 2 Single or Three Phase 3 Three Phase Not available w 277 volt Digit 8 Element and Motor Voltage A 208 Volts B 208 240 Volts C 277 Volt...

Страница 4: ...ce personnel to potential hazards that could result in personal injury or death Cautions are provided to alert personnel to conditions that may result in equipment or property damage For your convenience typical unit wiring diagrams are provided at the end of this booklet Unit Inspection When the unit is delivered to the job site verify that the correct unit has been shipped by comparing the infor...

Страница 5: ...ecommended Mounting Height HP RPM CFM Horizontal Vertical 3 3 1 125 1550 400 26 F 12 Ft 9 Ft 9 Ft 5 0 1 125 1550 400 26 F 12 Ft 9 Ft 9 Ft 7 5 1 50 1550 700 34 F 22 Ft 10 Ft 2 Ft 10 0 1 50 1550 700 45 F 22 Ft 10 Ft 14 Ft 15 0 1 20 1550 1100 43 F 32 Ft 11 Ft 20 Ft 20 0 1 20 1550 1100 57 F 32 Ft 12 Ft 18 Ft 25 0 1 12 1550 1250 2000 1800 40 F 44 F 45 Ft 12 Ft 22 Ft 30 0 1 12 1550 1250 2000 1800 47 F 5...

Страница 6: ...4 4 13 7 13 7 3 7 3 7 6 7 6 7 30 62 25 8 944 849 26 1 29 4 12 2 12 2 3 7 3 7 6 1 6 1 30 480 3 Mtr 50 25 8 944 849 26 1 29 4 12 2 12 2 3 7 3 7 6 1 6 1 40 186 25 8 1463 1321 22 2 25 0 16 8 16 8 4 6 4 6 7 3 7 3 40 480 3 Mtr 149 25 8 1463 1321 22 2 25 0 16 8 16 8 4 6 4 6 7 3 7 3 50 186 25 8 1463 1321 28 3 31 1 15 2 15 2 4 6 4 6 6 7 6 7 50 480 3 Mtr 149 25 8 1463 1321 28 3 31 1 15 2 15 2 4 6 4 6 6 7 6 ...

Страница 7: ...m Distance from Adjacent Surface to Unit 12 305 mm 12 305 mm 12 305 mm Minimum Distance from Floor to Unit 7 Ft 2 4 m 7 Ft 2 4 m 7 Ft 2 4 m Do not exceed unit s maximum mounting height see Table 1 Order No Model No Unit Size Number of Holes Dim from Edge Center to Center Dimension 233 930 OFG 5101 2 5 KW 4 1 4 6 4mm 3 3 4 95mm 233 932 OFG 5102 7 20 KW 4 1 4 6 4mm 4 3 4 121mm 233 935 OFG 5103 25 50...

Страница 8: ...nd the inside of the unit case Horizontal Air Delivery The combination wall ceiling swivel bracket can be used to suspend a unit from either the wall or ceiling to provide horizontal air delivery See Figure 3 For mounting bracket model information minimum clearance requirements and bracket dimensional data refer to Figure 2 Note To simplify unit installation be sure to complete the mounting and wi...

Страница 9: ...ivery Horizontal Ceiling Suspension Horizontal Wall Suspension Installation Wall Mounted Bracket Ceiling Mounted Bracket Customer Supplied Bracket or Direct Connection to Building Structural Member Figure 3a Dust Shield Installation for Horizontal Air Delivery UHEC IM 7A 9 ...

Страница 10: ...48 mm 1 7 8 48 mm C 5 7 16 138 mm 6 3 8 162 mm 6 3 8 162 mm 5 5 8 143 mm D 11 5 32 283 mm 16 1 16 408 mm 20 7 16 519 mm 26 1 2 673 mm E 26 660 mm 36 9 16 929 mm 36 9 16 929 mm 42 1067 mm F 9 1 8 232 mm 13 7 8 352 mm 13 7 8 352 mm 13 7 8 352 mm G 18 3 4 476 mm 24 1 2 622 mm 24 1 2 622 mm 28 1 16 713 mm Minimum Distance from Ceiling to Unit 12 1 8 311 mm 18 457 mm 18 457 mm 18 457 mm Minimum Distanc...

Страница 11: ...gle brackets to the back of the unit heater with the four 5 16 8mm X 18 capscrews and lockwashers provided Be sure that the vertical leg of each angle bracket faces the top and bottom ends of the heater 2 Attach the inverted U frames to the short angle brackets with the four 5 16 8mm X 18 capscrews washers lockwashers and nuts furnished with the unit 3 Using the four 5 16 8mm X 18 capscrews washer...

Страница 12: ...t a higher mounting height 3 3 5 0 KW 7 5 10 0 KW 15 0 20 0 KW 25 0 30 0 KW 40 0 50 0 KW N R N R N R N R N R 9 2 7 M 12 3 7 M 18 5 5 M 22 6 7 M 24 7 3 M 15 4 6 M 30 9 1 M 40 12 2 M 55 16 8 M 64 19 5 M 3 Anemostat Diffuser Optional For application where draft restriction is required at lower unit mounting heights 3 3 5 0 KW 7 5 10 0 KW 15 0 20 0 KW 25 0 30 0 KW 40 0 50 0 KW N A AD5120 AD5120 AD5150...

Страница 13: ...ree places 5 Place heater in operation Notes Machine screw head must be on the inside of the venturi ring Caution must be exercised when mounting the diffuser so as not to damage the fan blade Anemostat Diffuser 15 KW and 20 KW See Figure 5b 1 Discard 1 4 20 x 1 25 mm long machine screws and 5 8 16 mm long spacers 2 Line up holes in diffuser and the venturi ring heater front 3 Insert the 1 4 20 x ...

Страница 14: ...held closed by two 1 4 turn fasteners 2 Remove the desired knockouts from the back of the heater casing 3 Complete the thermostat and other optional accessory wiring using the installation instructions provided with them 4 Using the appropriate unit wiring diagram as a guide complete the electrical supply wire connections and attach the ground wire Note Since horizontal air discharge units are des...

Страница 15: ... 17 1 208 1 24 24 1 35A 8GA UHEC 051BACA 5 0 3 7 17 1 12 8 240 208 1 24 20 9 18 1 30A 25A 10GA 10GA UHEC 051CACA 5 0 17 1 277 1 24 18 1 25A 10GA UHEC 072AACA 7 5 25 6 208 1 3 24 36 1 50A 6GA 20 8 30A 10GA UHEC 072BACA 7 5 5 6 25 6 19 2 240 208 1 3 24 31 3 27 1 40A 35A 8GA 8GA 18 1 15 6 25A 20A 10GA 12GA UHEC 071CACA 7 5 25 6 277 1 24 27 1 35A 8GA UHEC 073DACA 7 5 25 6 480 3 24 9 1 15A 14GA UHEC 10...

Страница 16: ...ay run hot and will eventually be damaged internally Clean and repaint any rust spots on the casing Lubrication All unit heaters with ratings of up to 20 Kw are equipped with permanently lubricated fan motors so only occasional cleaning is required Unit heaters with ratings above 20 Kw have fan motors factory lubricated to provide 5 years of continuous service or 10 years of intermittent operation...

Страница 17: ... Probable Cause Recommended Action Thermostat calls for heat but unit does not function Blown Fuse Replace fuse see Table 2 for proper size Determine cause for blown fuse Incorrect wiring Check wiring connnections against wiring diagram Thermal cutout open causing heater element and control circuit to de energize Check for the following a Correct supply volts and phase b Correct control wiring i e...

Страница 18: ... and 051C0C0 WARNING Disconnect electrical power source to prevent injury or death from electrical shock Field Installed wiring Optional Notes 1 For 2 pole thermostat remove 1 to 8 jumper For 1 pole thermostat jumper 1 to 8 wire thermostat 4 to 5 2 Control circuit wiring must be NEC class 1 rated 600 volts WD5101 Wiring Diagrams 18 UHEC IM 7A ...

Страница 19: ...r Models UHEC 031AACA 051AACA 031CACA 051CACA 071CACA and 101CACA Disconnect electrical power source to prevent injury or death from electrical shock Field Installed wiring Optional Notes Control circuit wiring must be NEC class 1 rated 600 volts WD5104 Wiring Diagrams UHEC IM 7A 19 ...

Страница 20: ...ical power source to prevent injury or death from electrical shock WD5109 Field Installed wiring Optional Notes 1 For conversion from single phase to 3 phase power supply L1 L2 and L3 move Wire A1 from L2 to L3 and move Wire A2 from L1 to 10 2 Control circuit wiring must be NEC class 1 rated 600 volts Wiring Diagrams 20 UHEC IM 7A ...

Страница 21: ...from electrical shock WD5110 Field Installed wiring Optional Notes 1 For conversion from single phase to 3 phase power supply L1 L2 and L3 move Wire A1 from L2 to L3 and move Wire A2 from L1 to 10 2 For 208 volt applications only move Wire V1 from Terminal 1 to L1 and move Wire V2 from Terminal L1 to 1 3 Control circuit wiring must be NEC class 1 rated 600 volts Wiring Diagrams UHEC IM 7A 21 ...

Страница 22: ...to 3 phase power supply L1 L2 and L3 move Wire A1 from L2 to L3 and move Wire A2 from L1 to A3 2 For 2 pole thermostats remove jumper wire between Terminals 1 and 4 For 1 pole thermostats jumper Terminals 1 and 4 and wire thermostat to Terminals 4 and 5 3 Control circuit wiring must be NEC class 1 rated 600 volts Figure 10 Typical wiring for Models UHEC 032A0C0 032B0C0 052A0C0 and 052B0C0 Wiring D...

Страница 23: ...rical power source to prevent injury or death from electrical shock WD5113 Field Installed wiring Optional Notes 1 For conversion from single phase to 3 phase power supply L1 L2 and L3 move Wire A1 from L2 to L3 and move Wire A2 from L1 to 10 2 Control circuit wiring must be NEC class 1 rated 600 volts Wiring Diagrams UHEC IM 7A 23 ...

Страница 24: ...nd 102BACA WD5114 Field Installed wiring Optional Notes 1 For conversion from single phase to 3 phase power supply L1 L2 and L3 move Wire A1 from L2 to L3 and move Wire A2 from L1 to A3 2 For 208 volt applications only move Wire V1 from Terminal 1 to L1 C 1 and move Wire V2 from Terminal L1 C 1 to 1 3 Control circuit wiring must be NEC class 1 rated 600 volts Wiring Diagrams 24 UHEC IM 7A ...

Страница 25: ... source to prevent injury or death from electrical shock Figure 13 Typical wiring for Models UHEC 033DACA 053DACA 073DACA 103DACA 153DACA and 203DACA WD5138 Field Installed wiring Optional Notes Control circuit wiring must be NEC class 1 rated 600 volts Wiring Diagrams UHEC IM 7A 25 ...

Страница 26: ...re 14 Typical wiring for Model UHEC 153AACA Disconnect electrical power source to prevent injury or death from electrical shock Field Installed wiring Optional Notes Control circuit wiring must be NEC class 1 rated 600 volts WD5121 Wiring Diagrams 26 EUH IM 7A ...

Страница 27: ...ectrical power source to prevent injury or death from electrical shock Field Installed wiring Optional Notes 1 For 208 volt applications only move Wire V1 from Terminal 1to Terminal L1 then move Wire V2 from Terminal L1 to Terminal 1 2 Control circuit wiring must be NEC class 1 rated 600 volts WD5122 Wiring Diagrams EUH IM 7A 27 ...

Страница 28: ...wiring for Models UHEC 253AACA 303AACA 403AACA and 503AACA Disconnect electrical power source to prevent injury or death from electrical shock Field Installed wiring Optional Notes Control circuit wiring must be NEC class 1 rated 600 volts WD5125 Wiring Diagrams 28 EUH IM 7A ...

Страница 29: ...l wiring for Models UHEC 253BACA 303BACA 403BACA 503BACA Disconnect electrical power source to prevent injury or death from electrical shock Field Installed wiring Optional Notes Control circuit wiring must be NEC class 1 rated 600 volts WD5126 Wiring Diagrams EUH IM 7A 29 ...

Страница 30: ...Typical wiring for Models UHEC 253DACA and 303DACA Disconnect electrical power source to prevent injury or death from electrical shock Field Installed wiring Optional Notes Control circuit wiring must be NEC class 1 rated 600 volts WD5139 Wiring Diagrams 30 EUH IM 7A ...

Страница 31: ...re 19 Typical wiring for Model UHEC 403DACA Disconnect electrical power source to prevent injury or death from electrical shock Field Installed wiring Optional Notes Control circuit wiring must be NEC class 1 rated 600 volts WD5140 Wiring Diagrams EUH IM 7A 31 ...

Страница 32: ...onnect electrical power source to prevent injury or death from electrical shock Figure 20 Typical wiring for Model UHEC 503DACA WD5141 Field Installed wiring Optional Notes Control circuit wiring must be NEC class 1 rated 600 volts Wiring Diagrams 32 EUH IM 7A ...

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