28
m
IMPORTANT
When these operations have been completed
IT IS
MANDATORY TO
:
– CHECK THE TIGHTNESS of all the joints.
– COMPLETE THE INSULATION of the pipes and
ALL the devices involved (for example, PI pump, Vr
valve, puffer bleed device, etc) using the insulation
parts supplied with the Water System Kit and spe-
cific insulation tape.
It is advisable that the pipes already supplied as in-
sulated are completed.
2.11 Emptying operations
Emptying the domestic hot water storage tank
To empty the domestic hot water storage tank:
– Close the water system isolation valve
– Open at least one hot water tap
– Connect a pipe to the domestic hot water storage tank drain
valve (Rs) and duct it appropriately. Open the storage tank
drain valve.
– If further draining is necessary, the connection (A) of the
pipe which joins the plate heat exchanger and the water
heater can be loosened slightly.
m
WARNING
Suitably protect the devices below from any dripping
water.
Rs
A
Rs
A
Fig. 34
m
WARNING
Whenever the storage tank is drained, even partially,
the systems/circuits used by the appliance
MUST
be
refilled or reintegrated following the procedure de-
scribed in the section
“2.10 Filling operations”
includ-
ing the Automatic Degassing Function.
Summary of Contents for Open Hybrid MEM 25-006
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