1. Heating Maintenance and Repair
Electric Furnace
Electric Baseboard
Gas Furnace
Hydronic Heating
Introduce yourself and provide relevant information for this session:
Restroom location
Smoking rules
Cell phone usage
Class schedule

2. Disclaimer
The use of photos of tools and/or components which clearly indicate their manufacturer or brand in no way implies an endorsement of the company, brand or product by the National Apartment Association Education Institute.

3. Welcome! Course Topics Roles and Responsibilities Heating Safety
Tools and Equipment
Air Distribution
Electric Furnaces
Electric Baseboard
Gas Furnaces
Hydronic Heating
Resources:
Participant Guide
Presentation
Your Questions
Your Experiences
Videos
Demonstrations
Your Participation

4. Heating Systems Safety Rules:
1. Turn Power Off
2. Wear Personal Protective Equipment (PPE)
3. Follow Lock-Out /Tag-Out Procedures

5. Heating Systems Safety Rules:
4. Keep Tools and Equipment in Good Working Order
5. Do Not Take Shortcuts or Bypass Safety Features in Heating Systems

6. These are used to prevent catastrophic failure of equipment.
Safety Devices
These are used to prevent catastrophic failure of equipment.
DO NOT BYPASS

7. Key Tools for Heating Repairs

8. Electric Air Distribution

9. Gas Air Distribution

10. Components
Pg. 13

11. Lubricate, Testing and Replacing

12. Fan Relay Instant action switch
When low voltage is applied, a magnet is used to change the condition of the contacts
What was open is now closed, what was closed is now open.

13. Sequencer
Can have multiple levels (stages) to send power to different loads, at different times

14. Sequencer A delayed action switch
When low voltage is applied it heats a small element
Heat causes bimetallic switch to close
Heating element
Bimetallic switch

15. Limit Switch

16. Forced-Air Systems

17. Heat Adding heat = molecules move faster
Increasing the temperature in a specific space
0K = ˚F
300K = 80.3˚F
Adding heat = molecules move faster

18. Adding Heat
Cant be created, just transformed

19. Moving Heat
Conduction – Convection - Radiation

20. Heat
IMPORTANT:
Heat will only transfer from higher temperature to lower, never the reverse.

21. 1. Electric Heat (forced air)
Types of Heating Systems:
1. Electric Heat (forced air)
2. Electric Baseboard
3. Gas Furnace (forced air)
4. Hydronic Heat

22. HVAC
HVAC Servicing Procedures / Pg. 43

23. Thermostat

24. Thermostat

25. Thermostat
Think of a thermostat as a switch that is controlled by the temperature of the living space.
The operator controls the open/close point of that switch.
The temperature in the room controls the actual switch.

26. Thermometer coil with mercury switch attached

27. HVAC
HVAC Servicing Procedures / Pg. 43

28. Transformer

29. Transformer

30. HVAC
HVAC Servicing Procedures / Pg. 43

31. Electric Furnace HeatingPg

32. Key Parts of an Electric Furnace:
Blower
Heating Coils
Interlock

33. Electric Baseboard Heating

34. Electric Heat Element
Limit Switch
Fuse Link

35. Electric Heat Schematic

36. Anatomy of a Gas Furnace

37. Key Parts of an Gas Furnace:
Gas Control Valve
Gas Manifold
Gas Burners
Heat Exchanger
Ignition System
Thermocouple/ Power Pile
Blower

38. Gas Furnace

39. Gas Furnace

40. Gas Furnace Exhaust Exhaust Safety Gas Valve Roll Out Gas Burners
Gas Manifold

41. Key Parts of an Gas Furnace:
Fan Switches
Limit Switch
Flue Pipe

42. Gas Furnace

43. Gas Furnace
Play the video and answer any questions that follow

44. Interlock

45. Video: Hydronic Heat Basics
Watch Video

46. Q&A Q A

47. Thank You For Attending
Action Plan
Page 65
Thank You For Attending