CTC Union EcoZenith i555 Pro 1x230V, Руководство по установке и обслуживанию

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125
CTC EcoZenith i555 Pro
COLD
WATER
INLET
DHW TAPS
32
tº C
20
30 35
G41
B43
31
COLD
WATER
INLET
DHW TAPS
32
20
33
28
29
34
G40
22
23
13
22
23
14.3.4 CTC EcoZenith i555 Pro – DHW
Figure 1 Shows how DHW circulation can be connected to the EcoZenith.
The domestic hot water is circulated by pump (G40). New DHW from the
finned coil is mixed in by the mixing valve (32), and cooled water is released
down to the coil for reheating. Only a part of one coil in the upper tank is used
for circulation. The non-return valves (22), (23), (33) and (34) are needed to
ensure that circulation proceeds as intended. The control valves (28) and (29)
make it possible to set the correct flow rate in the circuit
Figure 2 Shows how an external DHW tank is connected. The manual 3-way
valve (31) is set to allow DHW to pass via the external DHW tank. The sensor
(B43) detects when the temperature drops in the external DHW tank and
starts the pump (G41). Cooled DHW is pumped via the non-return valve (35)
and control valve (30) down to the part of the coil used for circulation. The
water is heated in the coil and is stored in the external DHW tank. When the
sensor (B43) reaches its setpoint, the pump stops. The manual 3-way valve is
used to include or exclude the external tank, as desired, in operation. When
drawn off, the DHW passes through the entire coil and then via the external
DHW tank. The non-return valves (22), (23) and (35) are needed to ensure that
circulation proceeds as intended. The control valve (30) allows the desired
flow of the circuit to be adjusted.
Also refer to the "Upper tank" section in the "Detailed Menu Descriptions"
chapter (Installer/Settings/Upper Tank).
Note that the safety valves for the tap water system are not entered in the
schematic diagrams.
Figure 1 DHW circulation Figure 2 External DHW tank