Bosch HydroPower16H - 10 Basic Steps for Installation; Check cold water supply pressures; Connection sizing; Determine most suitable location

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10 Basic Steps for Installation
1. Check cold water supply pressures, min & max as per table below.
Model BOSCH 10H BOSCH 13H BOSCH 16H
Minimum Inlet
Pressure for
maximum
water flow
60 kPa 100 kPa 130 kPa
Minimum Inlet
Pressure for
minimum water
flow
30 kPa 40 kPa 50 kPa
Maximum Inlet
water pressure*
800 kPa 800 kPa 800 kPa
* If Inlet water pressure exceeds 800 kPa then a pressure reduction valve MUST be fitted. In
the cases where the pressure reduction valve is less than 3 metres from the hot water unit then
it must be fitted in conjunction with a cold water expansion valve. Failure to comply with this
requirement may void the warranty. The preferable location for the pressure reduction valve is
at the water meter.
2. Connection sizing as per table below.
Hot & Cold Water 1/2" BSP Male
Natural Gas 3/4" BSP Female
L.P. Gas 1/2" BSP Male
3. Determine most suitable location for appliance. Install only on an external wall, as close as
possible to the most frequently used hot tap. If the unit is to be installed on a combustible
surface use a heat shield (P/N F005X06317). Allow a minimum air gap of 10mm between the
flue and the heat shield.
4. Secure Heater to wall using two 10G X 5/16 hex head wood screws (Ramset 610041 or
similar).
5. Locate & connect cold and hot water piping to hot water appliance. Install gate valve or full
flow ball valve (fixed mechanism type) in cold water. If the water supply pressure exceeds 800
kPa, install a pressure limiting valve. If installing a pressure limiting valve fit a cold expansion
valve between the limiting valve and the appliance. PLV=500 kPa Cold Expansion=700 kPa.
Refer to AS 5601(AG 601) and AS3500.1 for the relevant pipe size.
NOTE: Service calls for incorrect pipe sizing will NOT be covered under warranty.
6. Test Inlet Gas Pressure while unit is running, adjust regulator to give values in table below.
Model BOSCH 10H BOSCH 13H BOSCH 16H
Inlet Gas Pressure NG 1.13 kPa 1.13 kPa 1.13 kPa
Inlet Gas Pressure LPG 2.75 kPa 2.75 kPa 2.75 kPa
Natural Gas: With the gas supply turned off, remove sealing screw from inlet
pressure test point located on the left hand side of the gas section, attach manometer. Turn on
gas , open hot water tap fully and adjust gas pressure regulator to 1.13 kPa . Turn off gas and
water, remove manometer, replace sealing screw and test for soundness.