Atmos Energy HE26 - Manual (Page 33)

6. COMMISSIONING
Note
The appliance must be installed and
commissioned in accordance with the
manufacturer’s instructions in order to comply
with the Building Regs. To demonstrate
compliance, the Benchmark Checklist
(located at the back of this Manual) should be
completed and signed at the time of
commissioning, and left with the customer.
Failure to flush and add inhibitor to the
system will invalidate the Appliance
Warranty.
6.1 Fill and de-aerate the appliance and the system
WARNING
Connect the appliance to the mains voltage only after
filling and de-aerating!
6.1.1 CH system
WARNING
All new and existing systems must be thoroughly
drained and flushed out in accordance with BS7593
requirements. A suitable cleaning agent is Sentinel X400,
following the manufacturer’s instructions. A corrosion
inhibitor should be added and the concentration level
checked. The inhibitor should be suitable for the
materials used in the appliance, such as copper, brass,
stainless steel, steel, plastic and rubber. A suitable
product is Sentinel X100, following the manufacturer’s
instructions.
1. Use the filling loop to fill the system to a maximum pressure of 1 to
2 bar with a cold system.
2. De-aerate the appliance with the manual air vent (A in diagram).
Alternatively, an automatic air vent can be mounted to the appliance
instead of the manual air vent.
Note: When the appliance is located at, or near to, the top of
the system (eg in a loft), an automatic air vent should be fitted.
3. Vent each radiator and purpose fitted air vent in turn starting with
the lowest in the system. The system pressure should be regularly
monitored during this process and topped up when required.
4. Air should be vented from the appliance pump by opening the
pump’s vent plug and allowing water to bleed for a few seconds.
Note: Take care that the water does not splash onto the electric
parts (eg controller and terminals).
5. Check all joints for leaks.
6. Fill the condensate trap with water – important (see diagram).
6.1.2 Gas supply
1. Purge the gas supply if necessary via the inlet pressure measuring
nipple on the gas valve.
2. Check the connections for leaks.
3. Check the inlet pressure. See Gas and air control.
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