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4.0 COMMISSIONING
4.1 COMMISSIONING - GENERAL
It is recommended that commissioning of the Electromax Solar is carried out in the following
order:
Domestic hot water
•
Central heating
•
Room thermostat
•
Electrical
•
Automatic bypass valve
•
Solar
•
Solar controller (information only)
•
4.2 COMMISSIONING - DHW
4.2.1 FILLING AND FLUSHING THE ELECTROMAX CYLINDER
Ensure all power supplies are switched off.
1.
Check that all connections to the Electromax Solar are tight.
2.
Check the domestic hot water expansion vessel charge pressure is set to 0.35 MPa
3.
(3.5bar) and modify if necessary. Pressure is checked using a car tyre pressure gauge.
The valve is located at the opposite end of the water connection.
Open a hot tap furthest from the Electromax Solar.
4.
Check the central heating filling loop isolating valves are closed.
5.
Open the cold water supply isolating valve and allow the Electromax Solar cylinder to
6.
fill. When water issues from the tap, allow it to run for a few minutes to thoroughly flush
through any residue, dirt or swarf, then close the tap.
Open successive hot taps and any cold outlet supplied by a balanced take off to purge
7.
any air from the system.
Check all connections (including immersion heater connections) for leaks and rectify
8.
as necessary.
The strainer housed within the cold water combination valve should be cleaned to remove
9.
any debris that may have been flushed through the main supply pipe. Refer to section 6.2
page 50 for instructions on how to do this.
NOTE: Water that is left standing in a stainless steel water cylinder for long periods without
draw off will become de-oxygenated and potentially corrode the vessel material. If the instal-
lation is to be left unused following installation and commissioning the water cylinder should
be drained or regularly (once per week) flushed through with fresh mains water.
4.2.2 CHECK THE OPERATION OF THE SAFETY VALVES
Slowly, open the temperature and pressure relief valve on the Electromax Solar for a
1.
few seconds. Check that the water discharged runs freely away through the tundish and
discharge pipework. Close the valve, ensure water flow stops and the valve reseats cor
-
rectly.
Slowly, open the expansion relief valve on the cold water combination valve for a few sec-
2.
onds. Check that the water discharged runs freely away through the tundish and discharge
pipework. Close the valve, ensure water flow stops and the valve reseats correctly.
