![Aerco Esteem 399 Installation And Maintenance Instructions Manual Download Page 14](http://html.mh-extra.com/html/aerco/esteem-399/esteem-399_installation-and-maintenance-instructions-manual_2861535014.webp)
14
Figure 3-1 Burner unit main components
3 - MAIN COMPONENTS
1 - Air / gas mixing device
2 - Gas valve
3 - Air intake silencer
4 - High limit temperature safety switch (UL 353 listed)
5 - Burner unit supply temperature sensor (par. 1001)
6 - Burner unit supply connection
7 - Burner unit supply pipe
8 - Gasket
9 - Unit heat exchanger
8
9
18
15
7
16
6
14
10
11
5
13
1
3
4
2
8
9
18
15
7
16
6
14
10
11
5
13
1
3
4
2
020021.01.004
10 - Burner unit return connection
11 - Support arrangement
13 - Water pressure sensor (present on Burner 1 only)
14 - Spark generator
15 - Ignitors covers
16 - Water flow sensor (par. 1062)
18 - Return pipe
Summary of Contents for Esteem 399
Page 3: ...3 SAFETY INSTRUCTIONS ...
Page 5: ...5 SAFETY INSTRUCTIONS ...
Page 112: ...112 17 MAINTENANCE ...
Page 116: ...116 19 SPARE PARTS Spare parts ...
Page 135: ......