Technical data

9
CTC EcoZenith i550 Pro
General Information
1. CTC EcoZenith i550 Pro design
Control System
The EcoZenith is equipped with
an intelligent control system which
controls and monitors all parts of
the heating system. The EcoZ-
enith ensures that the most eco-
nomical way of heating the house
and the hot water is prioritised.
Finned Coil for Hot Water
The EcoZenith is equipped with a
well dimensioned finned copper
coil and does not contain any
heater which can rust. A low
temperature can be maintained
without the risk of legionella
bacteria.
Immersion heaters in Upper
Part of Tank
Built-in upper immersion heater.
When connected to a heat pump,
the immersion heater acts as
additional heat.
(The uppermost immersion heater
is an accessory).
Lower tank
In the lower part of the tank, hot
water is preheated in the coil by
the solar- or heat pump-heated
water.
Solar Coil Connections
The well dimensioned, 10 m long,
finned coil can be connected
directly to the solar panels.
Lower immersion heater
Built-in lower immersion heater.
Upper Tank Connections
The upper part of the tank, the
additional part, can be heated by
heat pump and connected to heat
sources such as electric, gas, oil
and pellet boilers. Heat from a
wood boiler is delivered to this part.
Connections are placed symmetri-
cally on both sides of the tank.
Insulation
The tank is insulated by 90-mm-
thick molded polyurethane foam
for minimum heat loss.
Lower Tank Connections
The heat pump and solar system
are connected to the lower tank.
Water to be heated by wood boiler
is taken from here, and heat which
is to be stored in a buffer tank is
also taken from this part. Connec-
tions are placed symmetrically on
both sides of the tank.
Insulated tank divider
Between the tank’s upper and
lower tank is an insulated tank
divider. This provides high tem-
peratures in the upper tank for
good hot water capacity and low
temperatures in the lower tank for
best operating economy.
Heat Distribution Pipes
The heat distribution pipes ensure
that heat from the solar coil is di-
rected to the upper tank and that,
after hot water is drawn off, cooled
water is directed to the lower part
of the tank to be heated again by
solar energy or heat pump.
Upper tank
In the upper part of the tank, the
warm water in the coil is heated
up to the desired temperature.
Bivalent Mixing Valve
The automated mixing valve
ensures that an even heat is
continuously supplied to the radia-
tor system. The valve has double
ports and takes the warm radiator
water from the solar and heat
pump heated water in the lower
part of the tank first.
Fresh Water Connections
Here you connect the property’s fresh
water connections. The cold water
is fed down to the lower part of the
coiling, where it is preheated.
Top Connection
For connection of expansion ves-
sel and/or safety valve.
This chapter illustrates the main components and describes the subsystems
which, in different configurations, form part of the main system. For more informa-
tion about the EcoZenith configurations, refer to the “Pipe connections” chapter.
1.1 Main components