Multiple Rooms - Two Lwt Zones - Daikin ERRA08-12EW1 Installer's Reference Manual

6.2.3 Multiple rooms – Two LWT zones
ERRA08~12E + ELVH/X12S18+23E
Daikin Altherma 3 R MT F
4P708474-1 – 2023.05
Configuration
Setting
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
Number of water temperature zones:
▪ #: [4.4]
▪ Code: [7-02]
If the heat emitters selected for each room are designed for different leaving water
temperatures, you can use different leaving water temperature zones (maximum
2).
In this document:
▪ Main zone = Zone with the lowest design temperature in heating, and the highest
design temperature in cooling
▪ Additional zone = Zone with the highest design temperature in heating, and the
lowest design temperature in cooling
CAUTION
If there is more than one leaving water zone, ALWAYS install a mixing valve station in
the main zone to decrease (in heating)/increase (in cooling) the leaving water
temperature when the additional zone has demand.
Typical example:
Room (zone)
Living room (main zone)
Bed rooms (additional zone)
(a)
In cooling mode, you can allow the underfloor heating (main zone) to provide refreshment
(no real cooling), or NOT allow it. See setup below.
Setup
Three bizone kit system variations are possible:
1 System without hydraulic separator:
6 Application guidelines
|
Value
0 (Leaving water): Unit operation is
decided based on the leaving water
temperature.
0 (Single zone): Main
Heat emitters: Design temperature
Underfloor heating:
▪ In heating: 35°C
(a)
▪ In cooling : 20°C (only refreshment,
no real cooling allowed)
Heat pump convectors:
▪ In heating: 45°C
▪ In cooling: 12°C
Installer reference guide
45