Connecting Water Piping; About Connecting The Water Piping - Daikin Altherma 3 H MT ECH2O Installer's Reference Manual

8.2 Connecting water piping

8.2.1 About connecting the water piping

EPRA08~12EAV3+W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1 – 2021.07
b
b
b
a Individual room thermostat (optional)
b Shut-off valve
M1...3 Individual motorised valves to control each loop (field supply)
Minimum flow rate
Check that the minimum flow rate in the installation is guaranteed in all conditions.
Minimum required flow rate
20 l/min
NOTICE
If glycol was added to the water circuit, and the temperature of the water circuit is
low, the flow rate will NOT be displayed on the user interface. In this case, the
minimum flow rate can be checked by way of the pump test (check that the user
interface does NOT display error 7H).
NOTICE
When circulation in each or certain space heating loops is controlled by remotely
controlled valves, it is important that the minimum flow rate is guaranteed, even if all
valves are closed. In case the minimum flow rate cannot be reached, a flow error 7H
will be generated (no heating or operation).
See the recommended procedure as described in
4
commissioning" [ 235].
Before connecting the water piping
Make sure the outdoor and indoor unit are mounted.
8
a a a
M1 M2
b
b
Piping installation
|
M3
"11.4 Checklist during
Installer reference guide
89