Operation Of The Device; Introduction; General Operation Of The Device - A.O. Smith TWI - 35-130 Installation, User And Service Manual

2
2.1

Introduction

2.2 General operation
of the device
Legends IMD-0716 R0
1. Temperature sensor / ECO
2. Insulating layer
3. Air pressure switch
4. Burner
5. Venturi
6. Air supply pipe
7. Gas control
8. Cover plate
9. Hot surface igniter
10. Fan
11. Thermostat
12. Hot water outlet
13. Heat exchanger
14. Tank
15. Combustion chamber
16. Cold water inlet
17. Concentric measuring tube
18. Air supply hose
19. Flue gas discharge
20. Siphon
21. Transformer 230 VAC-120 VAC
22. Drain valve
23. Connector
24. Transformer 120 VAC-24 VAC
25. Electronic control
26. Thermostat board
27. Inspection window
28. Air inlet filter
Instruction manual TWI 35-130 G/TWI 45-190 G
Operation of
the device
This chapter will cover in the given order:

• General operation of the device;

• Heating cycle of the device;
• Security of the device;
• Safety of the installation.
The figure shows a cross section of the device.
Cross section of the device
1
2
3
4
5
6
7
8
9
1 0
1 1
2 8
1 2
1 3
1 4
1 5
1 6
1 7
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
8
2 7
1 8
IM D - 0 7 1 6 R 0
IMD-0716 R0
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