Technical data

89
CTC EcoZenith i550 Pro
For the installer
Heat pump 1 is connected to diverting valves for changing between the
upper and lower tanks. Heat pumps 2 and 3 are connected directly to the
lower tank for supplying radiators.
Ensure that the ports on the diverting valves (Y21) are set as in the schematic
diagram. The ports
● must always be connected to heat pump 1.
If it is necessary to swap ports (
■ and ▲), two jumpers in the actuator
must be reconnected. See the chapter on Electrical installation for more
information.
Note that when connected in series, the last heat pump must be in
terminated position. I.e., on the last heat pump, dipswitch 2 must be in the
ON position. On the other heat pumps it should be in the OFF position For
more information, refer to the Installation and Maintenance instructions of the
respective heat pump.
The diverting valves (Y21) and the circulation pumps (G11), (G12) and (G13)
are CTC accessories.
See also Heat pump Menu in the Detail Description Menus chapter.
(Installer/Settings/Heat pump A1-A3)
13.3.2 CTC EcoZenith i550 Pro - Heat pump
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25
26
27
Värmepump 1 Värmepump 2 Värmepump 3
11
02
E5
01
EL 1-3 a/b
E1/E4
B33
B6
B5
Y1
VP A1
VP A2
VP A3
G11
G12
G13
Y21
Y21