Case - 4 - Connecting Ambient Thermostats For A Low Temperature Multi-Zone System With Micro Limit Switches In The Zone Valves; Dhw Solar Plant - elco AGU 2.550 Manual Del Usario

8.4 CASE - 4 - Connecting ambient thermostats for a low temperature multi-zone system with micro limit
switches in the zone valves.
Connect the ambient thermostats in parallel to the external electric network (230V) which will supply the zone valves; connect
the micro switch contacts in parallel to the AGU 2.550 H2-M terminal blocks.
Connect the thermostat protecting the low temperature zone in series to the feed of the zone electrovalves so as to totally
close the circuit in case of fault.

9. DHW SOLAR PLANT

In this configuration, the AGU 2.550 accessory can manage the solar circuit pump, the manifold sensor and the storage boiler
sensor (relative to the solar plant) according to the following scheme:
1 solar storage heater sensor B31 (BX22-M)
2 solar storage heater sensor B6 (BX21-M)
The diagrams in this document are purely indicative and must be backed by a technical thermal analysis.
Enter menu 2 from the Remote Control, as described in section 5, and make the following settings:
MENU PROGRAMME ROW
6020
CONFIGURATION
7104900.03 (1-11/13)
3 solar circuit pump Q5 (QX23-N)
4 storage boiler sensor B3 - terminal block M2 (9-10) on boiler
VALUE TO SET
Solar DHW
30
DESCRIPTION
Solar function enable