Rinnai REU-KM3237FFUD-E Installation And User Manual page 27

UK INST. INSTRUCTIONS - VENTILATION
General Information on the internal range of water heaters.
The Rinnai Infinity internal water heaters are room sealed appliances. Ventilation
requirements of BS 5440 allow room sealed appliances to be installed in spaces and
rooms, including bedrooms, without ventilation.
If a Rinnai Infinity internal water heater is installed in a compartment it must have the
following amount of permanent ventilation.
Ventilation from compartment to room:
2
560 cm at high level AND
2
560 cm at low level
2
Based on 10cm /kW net heat input
Ventilation from compartment directly to outside:
2
280 cm at high level AND
2
280 cm at low level
2
Based on 5 cm /kW net heat input
The area given is the free area of the vent or equivalent free area for ventilators of more
complex design. Any space taken up by grille louvers should be subtracted from the
total area to find the free area of the vent. For two heaters the area should be doubled,
for three tripled, and so on.
Windows and doors can not be considered ventilation unless they are permanently fixed
in the open position.
Please refer to IGE/UP/10 Part 1. Edition 2 page 17 for further information or contact
Rinnai UK.
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