E93.1803.901 HW
41
8.1.9
T
WO
CB
105
HW
WATER HEATERS WITH TWO
EWD500
TANKS
Water heater connections, encoding:
Number the water heaters: water heater-1 is the water heater furthest from the tank(s), see picture.
Encode the connection pipes directly connected to the water heaters: D1, see picture.
Encode the horizontal connection pipes:
-
hot water pipes starting at water heater-1: D1 up to D (= in this example only D1 and D), see picture.
-
return pipes starting at water heater-last (= water heater-2): D1 up to D (same remark), see picture.
Pipe sizes, water heater side:
Selecting ΔT = 16.5
°
C, from tables
A
and
C
, CB 105 HW:
-
All pipes D1 in the picture must measure at least 42
1.5 [mm
mm] (table
A
)
-
The pipes D must measure 54 x 1.5 [mm
mm] (table
C
)
Tank connections:
-
From
table
B
, for 2 tanks D
T
= 42
1.5 [mm
mm].
For this system, pipes sized at least 42
1.5 [mm
mm] are to be applied for all connections directly on
water heaters and tanks, and pipes sized at least 54
1.5 [mm
mm] for the connections between them.
Length of the connecting pipes water heaters
tanks
From
table
D
: The maximum total length of flow and return pipes 54 x 1.5 [mm
mm] is 2 x 10 m, the
physical distance between water heaters and tanks is also 10 m, at max. Using bends and/or valves, this
distance becomes less than 10 m. Use table
E
.
Pump:
According to table
D
: Use two pumps
P1
(each water heater one pump).
2 water heaters
CB 105 HW
2 tanks
EWD500
Example 2
COLD IN
42 x 1.5
54 x 1.5
COLD IN
Содержание CB 105 HW
Страница 69: ...E93 1803 901 HW 70 12 6 Electrical schematic...
Страница 70: ...E93 1803 901 HW 71...
Страница 71: ...E93 1803 901 HW 72 12 7 Ladder Logic Diagram LOW MAINS VOLTAGE VOLTAGE...
Страница 127: ...E93 1803 901 HW 128 22 SPARE PARTS CB 85 HW CB 105 HW and CB 125 HW exploded view...
Страница 128: ...E93 1803 901 HW 129...
Страница 129: ...E93 1803 901 HW 130 CB 155 HW exploded view...
Страница 130: ...E93 1803 901 HW 131...
Страница 145: ......
Страница 146: ......
