E93.1001EN.C Manual CD
+
55
So for this system, sizes of at least 54
1,5 [mm
mm] are to be applied for all pipes directly connected to the
water heaters and tanks, and pipes sized at least 106
2.5 [mm
mm] for the connections between the casca-
ded water heaters and the tanks. The pipes D2 in the cascade must be at least 93
2,3 [mm
mm].
Length of the connecting pipes water heaters
↔
tanks
From table
E
:
The maximum total length of hot- and cold-water connection pipes between the water heater cascade and the
tanks, using 106
2,5 [mm
mm], is 36,7 m.
So when this diameter is applied, the physical distance between water heaters and tanks may be half of this,
so ~ 18 m, at max. In case bends and/or valves are used, this distance becomes less than 18 m. Use
table
E
.
Pump
From table
F
: Use three pumps
P3
.
1
2
3
= 54 x 1.5
= 93 x 2.3
= 106 x 2.5
D
D
D
D
D2
D1
D1
D2
D1 en D
T
D2
D
← D
T
(10x)