WarmFlow A Series, User Instructions

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Electrical Connections – Inspection of the electrical connections should only be undertaken with
power isolated to the unit. The condition of wiring together with the security of electrical
connections should be inspected and repaired as required.
Heating Circuit Filter – The heating filter/strainer should be inspected and cleaned to remove any
debris and ensure optimal flow rates. The filter should first be isolated on both sides using the
isolating valves. The strainer element can then be removed for cleaning.
Inhibitor Concentration of Heating Solution – The system corrosion inhibitor level must be checked
(instant on-site test kits are available from inhibitor manufacturers) and additional inhibitor must
be added if the system is found to be under-dosed. Refer to the inhibitor manufacturer for further
guidance. If the inhibitor concentration has dropped significantly since the last
service/commissioning, this may suggest someone has been topping up the heating system with
water. Further investigation for a leak may be necessary.
Glycol (Antifreeze) Concentration of Heating Solution – The system Glycol level must be checked
(if applicable). This can be checked with a refractometer in accordance with the Glycol
manufacturer’s instructions. Additional Glycol must be added if the system is found to be under-
dosed. Refer to the Glycol manufacturer for further guidance. If the Glycol concentration has
dropped significantly since the last service/commissioning, this may suggest someone has been
topping up the heating system with water. Further investigation for a leak may be necessary.
Heating Circuit Pressure – The system pressure of the heating circuit should be inspected on the
installed pressure gauge. The pressure should be between 1 and 2 bar. The pressure should be
adjusted accordingly. If the pressure has dropped significantly since the last
service/commissioning, this may suggest a leak somewhere in the system.
Heating Manifold - The condition of the manifold, together with the operating of any motorised
valves and the flow rates in each circuit should be inspected.
Heating Pipework & Sealing - The condition of the heating pipework including joints and insulation
should be inspected and repaired as necessary.
Heating Circuit Safety Devices – Safety devices such as pressure and temperature relief valves
should be manually activated to confirm their operation. A pressure relief device is located inside
the unit. Defective devices should be replaced immediately.
Heating Flow Rate – The maximum heating flow rate achievable should be checked. The heating
flow rate should be checked against the maximum flow rate recorded on the commissioning
certificate. If the flow rate is found to have dropped significantly, this may indicate a blockage in
the system or a problem with the pump. Further investigation is required.
Insulation Inside Unit – The condition of pipe insulation and sound proofing in the appliance casing
should be inspected for damage. If either is found to be damaged or defective, it should be
replaced. Insulation kits are available from Warmflow.
Note: All product warranties will be invalidated if the appliance is not serviced at least
annually or as indicated by the user interface controller (whichever occurs sooner) by a
Warmflow engineer or other trained and competent engineer and details recorded in the
service record section of this manual.
In the event of a breakdown please contact your commissioning engineer who should then contact
our service department whilst at your home, to report the fault.