Evinox ModuSat - Troubleshooting Common Problems

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2.9 Problems and solutions
Problems only occur with ModuSat TP installations if our instructions are not adhered to.
Poor insulation can result in various problems so it is imperative that the insulation
standards of BS.3958 and BS.5422 are followed at all times.
Insulation of the primary circuit
Noted errors Effects Solutions
Primary riser and connecting
pipes to the ModuSat TP not well
insulated
Overheating of common
areas
Overheating of
flat/apartment
Follow recommendation
to insulate below
Primary and cold water
distribution not well insulated
Cold water reaches 20 °C
and more
Separate cold water
pipes
Insulate according to
current regulations
Primary riser and connecting
pipes to the ModuSat TP not well
insulated
Lack of hot water
Lack of heating
Carry out correct
balancing
The primary distribution circuits, which supply the ModuSat TP, may be maintained at a
temperature of 70°C for the summer period and at 80°C for the winter period. The total
output of the installation of the system will be dependent on the quality of the insulation of
the primary circuit. It will be necessary to take care to choose an insulation material of
good quality and to ensure a good installation of the chosen material. Pipe rings/supports
will be selected with an integral insulation, which will limit the thermal conduction towards
the fabric of the building. Particular care will have to be taken to the insulation of the
branch connections and changes of direction. In the same way as the rising mains the
horizontal distribution network to the ModuSat TP units will be insulated perfectly up to the
satellite. The length of the horizontal distribution pipework should be limited to the
minimum while placing the rising mains as near as possible to the satellites.
Insulation thickness within service voids and risers
NOTE: A minimum of 20mm thickness insulation should be applied to all pipework within
the ModuSat TP cupboard.
Primary pipework concealed in the fabric of the building
This solution should not be used in a new
building as it can cause serious
overheating problems of the building if
detailed attention is not given to this type
of installation practice. Evinox will not be
held responsible for problems generated by bad design or bad installation practice.
Recommendations:
 Use good installation practice by using pitcher tees and swept bends instead of square
tees and elbows
 Use high quality pipe insulation installed by a thermal insulation contractor
 Obligatory use of the optional 230V energy cut off valve when the heating and hot
water are satisfied (Not applicable to solar and CHP systems)
 Use insulated pipe rigs to prevent thermal transfer of heat into the fabric of the building
Pipe Size Min wall thickness
15 to 35 25 mm
35 to 60 35 mm
60 to 100 50 mm