Multiple Rooms - Two Lwt Zones - Daikin EPRA18DAW1 Installer's Reference Manual

5.2.1 Multiple rooms – Two LWT zones
EPRA14~18DAV3+W1 + ETVZ16S18+23DA6V+9W
Daikin Altherma 3 H HT F
4P587503-1A – 2020.01
NOTICE
If you install this unit as a single-zone application, then:
Setup. Install a bypass between the space heating water inlet and outlet of the
additional zone (=direct zone). Do NOT interrupt the water flow by closing the shut-
off valves.
a Bypass
Configuration. Set field setting [7-02]=0 (Number of zones = Single zone).
This unit is designed to deliver water at 2 different temperatures. A typical
installation consists of underfloor heating at a lower temperature and radiators at
a higher water temperature.
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
Typical example:
Room (zone)
Living room (main zone)
Bed rooms (additional zone)
5 Application guidelines
|
a
Heat emitters: Design temperature
Underfloor heating:
▪ In heating: 35°C
▪ In cooling: 20°C (only refreshment, no
real cooling allowed)
Heat pump convectors:
▪ In heating: 45°C
▪ In cooling: 12°C
Installer reference guide
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