Wilo -SiFire FIRST Installation And Operating Instructions Manual page 21

6.4.5 Diesel motor: Exhaust system and
ventilation
A
7
6
1
Fig. 8: Ventilation and exhaust system
Motor power Motor cooling
4.2 kW
6.8 kW
10.5 kW
12.9 kW
17.7 kW
26.5 kW
31.5 kW
37 kW
47.7 kW
66 kW
Installation and operating instructions Wilo-SiFire FIRST
Installation and electrical connection
2
5
4
3
A: Single-side room ventilation with exhaust system
1 Supply air opening
2 Exhaust air opening
3 Rubber compensator for vibration damping
4 Exhaust pipe
5 Thermal insulation, guard
6 Condensate return pipe
7 Silencer
B: Room ventilation with cross ventilation without exhaust system
1 Supply air opening
2 Exhaust air opening
If the system is equipped with a diesel motor, the waste heat and combustion gases
must be evacuated outside. Provide appropriate supply air and exhaust air openings for
this purpose. Position the ventilation openings as follows:
ƒ
Supply air opening: bottom/near floor
ƒ
Exhaust air opening: top/near ceiling
The exhaust gases can be evacuated outside as follows:
ƒ
Via an exhaust system
If the supply air and exhaust air openings are on the same side, install an exhaust
pipe on the motor.
ƒ
Room ventilation with cross ventilation
If the supply air and exhaust air openings are installed opposite each other (cross
ventilation), the exhaust pipe can be omitted. Ensure a minimum air flow according
to the following table.
Required air flow for
motor cooling
Air cooling
Air cooling
Air cooling
Air cooling
Air cooling
Water cooling
Water cooling
Water cooling
Water cooling
Water cooling
NOTICE! The required air flow may vary depending on the ambient conditions. Ob-
serve the motor cooling specifications from the motor manufacturer.
B
1
Required quantity of
cooling water
300 m³/h
522 m³/h
710 m³/h
792 m³/h
1578 m³/h
− 8 m³/h
− 8 m³/h
− 8 m³/h
− 8 m³/h
− 10 m³/h
Required air flow for
room cooling
− 420 m³/h
− 680 m³/h
− 1050 m³/h
− 1290 m³/h
− 1770 m³/h
1325 m³/h
1575 m³/h
1850 m³/h
2385 m³/h
3300 m³/h
en
2
21