COMMISSIONING
50 Installation and Maintenance
Section 5 - Commissioning
5.1 PRE-COMMISSIONING CHECKLIST
ᘐ WARNING: The checklist must be completed prior
to any further action. Further actions are not permitted,
and the safety of the system is not veried unless each
check has been done and positively conrmed.
Table 15 Pre-Commissioning Checklist
Does the circuit comply with the appropriate building
regulations, and legislation?
Does the circuit have the necessary safety devices
installed?
Do electrical components of the circuit and surrounding
reasonably protected from potential water leaks/sprays?
Are all drainage valves (and any other valve that open
the circuit) closed?
Are automatic-air-vent dust caps open?
Have adequate antifreeze measures been installed in
the system (not including dosing)?
5.2 COMMISSIONING OF HYDRONIC CIRCUIT
5.2.1 Flushing Out the Hydronic Circuit
ᘐ CAUTION: Pipework is to be cleaned in accordance with
BS 7593:2019 to remove any particles that may negatively
aect the performance of any of the components. If the
system is not rinsed, the system eciency will be negatively
aected, and it will negatively aect the life expectancy of
the system components. Requirements stipulated in BS
7593:2019 should be followed when purging and treating the
system water circuit.
ᘐ CAUTION: Solvents and aromatic hydrocarbons (such
as petrol, or parans etc.) are not to be used to clean the
system pipework.
5.2.2 System Water Treatment
5.2.2.1 Water Quality
ⓘ IMPORTANT: Requirements stipulated in BS 7593:2019
should be followed when purging and treating the system
water circuit.
The following steps should be taken to check any sealed heating
circuit. A heating circuit water quality test kit will be required
(instructions on test kit to be followed over the following for
taking a sample).
Make sure that the heating system has been circulating and
operating at temperature for a minimum of 15min.
1. Use a drainage point (preferably low in the system) to take a
2. The sample will then need to be checked for the following
(instructions on test kit to be followed):
• pH Level.
• Water Hardness.
• Turbidity.
• Propylene Glycol Concentration (if applicable)
Record results on the Benchmark records at the rear of this
book.
ⓘ INFORMATION: Ideal Heating accepts no liability for
the compatibility, eectiveness, and suitability of any
inhibitors used in part or in the whole of the heating
system. It is the responsibility of the applicator of the
inhibitor to assess the system and its components for
compatibility with the inhibitor.
Ideal Heating recommend dosing the system with a suitable
inhibitor as a minimum. If propylene glycol is used for frost
protection, a combined propylene glycol, biocide and inhibitor
MUST be used.
5.2.2.2 Dosing Method
ᘐ CAUTION: Prior to dosing, check the compatibility
of any chemicals or solutions to be added with the
system components and materials to prevent damage or
reduced lifespan.
The system is to be dosed following the guidance stipulated
in BS 7593:2019 and the instructions provided by the inhibitor
manufacturer.
ⓘ IMPORTANT: When dosing the system with any
product, the use of ll and ush valves in conjunction
with a ll and ush station is recommended to make sure
the concentration and mixing is thorough and avoid the
potential for hydrostatic locking of the system.
ⓘ IMPORTANT: The application of any treatment to
this product that is not outlined in this document may
render the guarantee invalid.
It is recommended to use any of the following solutions
for cleaning the system. Please follow the instructions and
guidance supplied with the solution.
• Fernox F3
• ADEY MC3 or MC5
• Sentinel X300 (New Systems)
• Sentinel X400 (Existing Systems)
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