Hydronic Heating Installation Commissioning Procedure
(Note that this is to be completed after every installation of any appliance)
Step 1.
Fill & Test for leaks
After the installation is complete and radiators fitted off
Fill the system completely, check over all pipe work and ensure that there are no leaks
and the system is sound.
Step 1.
Bleeding the air
After the fill test is complete and no leaks found. To correctly bleed each radiator, shut
off all isolation valves on the manifold (cold circuit) to restrict flow to the radiators. This
will isolate each line, The same can be done for the In-Slab after pressure testing.
Open up the furthest line, which is generally fitted on the LHS of the manifold.
Aur will build up at the top of each radiator. Using your bleed key, bleed the system
until water is evident, then lock off and begin the next line.
Use a bowl or cup to catch any water that bubbles out –
this water may be black in colour
and could stain any surface contacted
.
As soon as air bubbles cease, turn off the air vent.
After this is completed on all circuits, open all valves to allow the system to balance.
Step 3.
Adding Inhibitor & Test Dose
Isolate one radiator and fit the inhibitor dose point to the top RHS fitting as per the
instructions on the kit.
Add the inhibitor as instructed and check the dosage is sufficient.
Step 4.
System Over View & Initial Light
Run through the functions on the appliance and cover what is included in general
maintenance to run the system.
Explain the purpose of the thermostat and how this can be changed if boiling occurs if
any circuits are isolated in future.
Explain how the radiator valves can be adjusted and if fitted, the thermostatic head.
Explain that the system will make NOISE from expansion.
Light the stove and explain the dampening systems.
