1
2
3
4
5
7
6
8
9
10
11
12
13
■
1
Flue gas connection
■
2
Combustion air connection
■
3
Gas connection
■
4
Filter box
■
5
Mixed air box
■
6
Fresh air duct (not included in the Hoval
scope of supply)
■
7
Terminal box with isolation switch
■
8
Fan
■
9
Casing
■
10
Gas control valve
■
11
Burner unit consisting of stainless steel
gas blower and premix burner
■
12
Heat exchanger of stainless steel
■
13
Air-Injector
Fig. E1: TopVent
®
MG structure
■
1
Mixed air box
■
2
Filter box
■
3
Heating section
■
4
Air-Injector
Fig. E2: TopVent
®
MG components
E
49
TopVent
®
MG
Construction and operation
Use
