Enertech CTC EcoLogic Family series, Installation And Maintenance Manual, Page: 93 / 128

93
CTC EcoLogic Pro/Family
For the installer
9.2.3 CTC EcoLogic systems 2 and 3 – Hot water
In EcoLogic system 3, the hot water tank can be equipped with an immersion
heater (E4) if additional heat (E1, E2 or E3) is installed after the hot water tank.
Sensor B5 should be installed in the hot water tank.
Hot water (DHW) circulation is obtained from the pump (G40). Fresh hot water
from the hot water tank is mixed in by the mixing valve and chilled water
released down into the tank before once more being heated up. The non-return
valves are necessary to ensure that circulation proceeds as intended. Control
valves allow the desired low of the circuit to be adjusted.
Option A
Option B
DHW tank
DHW
DHW
tank
External DHW tank
Option B illustrates the possibility of installing (a) hot water tank(s) which is/
are then connected via a heat exchanger to the lower hot water tank shown
in the igure. This solution requires the installation of a sensor (B41) in the
external buffer tank, as well as circulation pumps (G41) before and after the
heat exchanger.