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Pleno PI
PSV
H
ST
H
ST
TAZ
PSV
Min. pressure
Initial pressure
Final pressure
Max. pressure
Static height
Static height is calculated from the pre-set pressure
(P0) of the installed expansion vessel (e.g. Statico):
H
ST
= (P0
Statico
– 0.3 bar) * 10
This value must be at least equal to the actual
static height.
Example:
Actual static height:
H
ST
= 21 m
Statico pre-set pressure: P0 = 3.1 bar
Static height to be set: H
ST
= 28 m
H
ST
= (3.1 – 0.3) * 10 bar = 28 m
Temperature limit at heat generator
Safety valve response pressure on heat generator
If the heat generator is at h (m) lower than the pres-
sure maintenance value, then the BrainCube PSV
setting is: PSV – h/10, if it is higher: PSV + h/10.
• P0 = H
ST
/10 + p
D
(TAZ) + 0,3 bar
If the pressure maintenance (expansion vessel)
and Pleno Pl are connected on the suction side
as shown.
• P0 = H
ST
/10 + p
D
(TAZ) + 0,3 bar + Δp
P
If the pressure maintenance ( expansion vessel)
and Pleno Pl are connected on the discharge side
of the circulating pump side, allow for dynamic
pressure Δp
P
of the pump.
p
a
= P0 + 0.3 bar
p
e
= PSV – 0.5 bar (for PSV ≤ 5.0 bar)
p
e
= PSV * 0.9
(for PSV > 5.0 bar)
PSV
∆
p
P
Setting BrainCube parameters
BrainCube calculations and display
Operation - BrainCube control
Summary of Contents for IMI PNEUMATEX Pleno PI
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