Rinnai REU-1110FFU-E Installation And User Manual page 20

INSTALLATION INSTRUCTIONS
Water Supply.
Where the static water supply pressure exceeds 10 bar, an approved pressure reducing de-
vice is required at the inlet of the appliance. The max dynamic water pressure must be lim-
ited to 7 bar. To achieve the maximum rated flow a minimum water supply pressure of 0.7
bar is required at the appliance inlet. The unit will operate at lower supply pressures but the
maximum flow rate will not be achieved.
Contact Rinnai or your supplier for 'gravity fed' or 'low pressure' hot water installations.
Water pipe sizing and layout should be designed correctly to ensure the given water flows
from the appliance are available. All hot water pipework should be insulated to optimise max-
imum performance and energy efficiency.
Water Connection.
Connect the hot and cold water supply pipes as shown on the following page.
An approved isolation valve and strainer MUST be installed in the cold water inlet pipe. An
approved isolation valve and draining point should be installed in the hot water outlet pipe.
There must be a union or release fitting on the heater side of the isolation valves. An unvent-
ed kit to local regulations must be installed in the pipework when the system is closed (i.e.
has a flow and return, or tank). Positions of the cold water inlet, hot water outlet and gas
connections are shown on page 29.
If the heater is in a hard water area a suitable water conditioning device should be installed
to prevent the build up of lime scale within the heat exchanger. Heat exchangers damaged
by scaling are not covered by the manufacturer's warranty.
Total Dis-
Description pH solved Solids Total Hardness Chlorides Magnesium Calcium Sodium Iron
(TDS)
Maximum Recom-
6.5 - 9.0 600 mg/litre 150 mg/litre 300 mg/litre 10 mg/litre 20 mg/litre 150 mg/litre 1 mg/litre
mended Levels
Gas Connection.
Check pipe sizing required for the heater input.
The gross heat input for the:
Continuum 11i (and 11i-fp) is 24,4kW (G20); 23,5kW (G31); 26,8kW (G30).
Continuum 14i (and 14i-fp) is 30,7kW (G20); 27,0kW (G31); 30,7kW (G30).
The size of the gas meter and pipework must be sufficient for all appliances on the main.
Sufficient gas must be available at the appliance if correct operation is to be expected; insuf-
ficient gas will damage the unit. An approved gas isolation valve must be fitted at the gas
inlet. A union or release fitting should be installed after the isolation valve.
Electrical Connection.
The appliance must be earthed. The appliance is suitable for 230V AC - 50Hz mains only
and all wiring must be carried out to local regulations.
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