Table of Contents
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Table of Contents
Related Manuals for Nordyne E2EH 010H
Summary of Contents for Nordyne E2EH 010H
- Page 1 E2 Series Electric Furnaces Service Manual...
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Page 3: Table Of Contents
Table of Contents Electrical Requirements................. 10 Codes, Specifications Requirements ................10 Connection Supply Service Wires ................10 Furnace Sequence of Operation ............5 Air Circulator Motor ....................... 9 Air Circulation Switch ....................8 Heating Elements ......................7 Cooling Relay ....................... 7 Limit Switches ....................... -
Page 4: General
General This installations provides an access door for future installation of an air conditioning/heat pump coil. All E2 E2 series electric furnaces are approved for use in series furnaces are A/C, heat pump adaptable. Refer to mobile/modular homes. The E2 series furnaces are table 2 For optional air conditioner/ heat pump approved for downflow and upflow installations as free equipment. -
Page 5: Furnace Sequence Of Operation
Item Number (See Fig. 1) Description 4-Speed Blower 4 Ton - See Notes: 1 & 5 27” (686 mm) 5 Ton - See Note: 1 A.C./H.P. Relay Control Box (not req’d on E2EB models) See Note: 1 Cabinet Insulation Kit See Notes: 1 &... -
Page 6: Sequencer
Sequencer (Figure 2) In general all sequencers operate the same way. In some applications one sequencer may be sufficient (10 and 12 kw models) in other applications. One two or more sequencers may be required. Important: Sequencers should never be mixed. If different brands of sequencer are used and their timing may be different. -
Page 7: Heating Elements
Refer to unit wiring diagram section for wiring of sequencer for each model furnace. Control Transformer (Figure 3) All E2 furnaces are equipped with a 30 VA, 240/208 vac primary, 24 vac secondary transformer. The function of the transformer is to supply the 24 volts for the low voltage circuit which activates the controls. -
Page 8: Air Circulation Switch
Figure 7. Limits in furnace The limit device is a safety which can be compared to a fuse or a breaker in a electrical circuit. The function of the limit switch is to open the electrical circuit to the heating elements if over heating should occur. This could be caused by air circulator failure, dirty filters, lack of return air, restricted ducts, etc. -
Page 9: Air Circulator Motor
sequencer. The blower will run during the heating cycle of the furnace. When the switch is in the “fan” position the blower will run continuously. See Figure Capacitor(See Figure 10): 8 for air circulation switch. 1. Shut off the electrical supply to the unit. 2. -
Page 10: Electrical Requirements
NOTE: To install single-circuit kit, perform step 5. If ELECTRICAL REQUIREMENTS single-circuit kit installation is not necessary, go to step 6. WARNING: To avoid the risk of electrical shock, personal 5. To install single-circuit kit. injury or death, disconnect all electrical power Loosen lugs at supply side of circuit breakers. -
Page 11: Selecting Blower Speeds
Recommended Wire Sizes* Model Max Over- Min. 75°C Copper Low-Voltage Supply E2EH/ Total Current Circuit Thermostat Wire Circuit E2EB- Amperes Rating Ampacity Wire Size Ground Size Size Single 45.5 Single 52.1 Dual "A" 28.0 2-Wire system max wire "B" 24.2 lengths : Single 66.3... -
Page 12: Blower Performance
c. Remove cooling blower lead from terminal 4 on blower THERMOSTAT SEQUENCE OF OPERATION relay. d. Install new blower lead onto terminal 4 of blower relay for NOTE: If appliance(s) is equipped with time delay new cooling speed. control, the system operation will lag behind the See Table 5 for blower performance data. -
Page 13: Wiring Diagrams
Figure 15. E2EH 010 Wiring Diagram 13 E2 Service Manual... -
Page 14: E2Eh 012
Figure 16. E2EH 012 Wiring Diagram 14 E2 Service Manual... -
Page 15: E2Eh 015,017
Figure 17. E2EH 015, 017 Wiring Diagram 15 E2 Service Manual... -
Page 16: E2Eh 020, 023
Figure 18. E2EH 020, 023 Wiring Diagram 16 E2 Service Manual... -
Page 17: E2Eb 010
Figure 19. E2EB 010 Wiring Diagrams 17 E2 Service Manual... -
Page 18: E2Eb 012
Figure 20. E2EB 012 Wiring Diagram 18 E2 Service Manual... -
Page 19: E2Eb 015,017
Figure 21. E2EB 015, 017 Wiring Diagram 19 E2 Service Manual... -
Page 20: E2Eb 020, 023
Figure 22. E2EB 020, 023 Wiring Diagram 20 E2 Service Manual... -
Page 21: Service Diagrams
Figure 23.Two-Wire Relay Box for A/C E2EH 020 and 023 Units 21 E2 Service Manual... -
Page 22: Wire Relay Box For H/P E2Eh 020 And 023 Units
Figure 24. 4-7-Wire Relay Box for H/P E2EH 020 and 023 Units 22 E2 Service Manual... -
Page 23: Wire Relay Box For H/P E2Eb 020 And 023 Units
Figure 25. 4-7-Wire Relay Box for H/P E2EB 020 and 023 Units (Part 1) 23 E2 Service Manual... - Page 24 Figure 26. 4-7-Wire Relay Box for H/P E2EB 020 and 023 Units (Part 2) 24 E2 Service Manual...
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- Page 28 359A-1097 Specifications and illustrations subject to change without notice and without incurring obligations. Printed in U.S.A. (10/97) St. Louis, MO...