To Protect The Water Circuit Against Freezing - Daikin Altherma EDLQ011-016CW1 Installer's Reference Manual

7 Installation
To connect the 3-way valve
1 Unpack the 3‑way valve body and 3‑way valve motor and verify
that the following accessories are provided with the motor.
a b
a Sleeve
b Valve motor cover
c Screw
d Scale
2 Connect the 3‑way valve body to the water inlet of the backup
heater, in accordance with one of the following four
configurations. Position the shaft in such a way that the motor
can be mounted and replaced.
E1
1
3
2
2
E3
1
2
3
3
1 From outdoor unit
2 To bypass
3 To backup heater
3 Put the sleeve on the valve and turn it until the valve is
positioned as in the figure below. It should be blocking the
outlet connection to the bypass for 50% and the outlet
connection to the backup heater for 50%.
E1+E3
4 When installing in accordance with configurations E3 or E4,
open the valve motor cover by loosening the screw and change
the jumper so as to change the rotation direction of the valve.
Installer reference guide
38
d
c
E2
1
3
E4
1
2
E2+E4
Position of the jumper in case of installation according to
configurations E1 and E2.
Position of the jumper in case of installation according to
configurations E3 and E4.
INFORMATION
The jumper is factory‑set to apply for installation in
accordance with configurations E1 and E2.
5 Put the knob on the motor in a 12 o'clock position and push the
motor on the sleeve. Do NOT rotate the sleeve during this
action, so as to maintain the valve position as set during step 4.
6 Put the scale on the valve according to the applicable
configuration.
E1+E2 E3+E4
a b b
a Bypass
b Backup heater
7 To provide stress relief, fix the power supply cable to the 3‑way
valve body with a cable tie (field supply). Fix it so that possible
condensate cannot enter the 3‑way valve motor via the cable.
1×
7.7.6 To protect the water circuit against
freezing
Frost can damage the system. To prevent the hydraulic components
from freezing, the software is equipped with special frost protection
functions, that include the activation of pump, internal heaters, and/
or backup heater operation in case of low temperatures.
However, in case of a power failure, these functions cannot
guarantee protection. It is therefore recommended to add glycol to
the water circuit. The required concentration depends on the lowest
expected outdoor temperature, and on whether you want to protect
the system from bursting or from freezing. To prevent the system
from freezing, more glycol is required. Add glycol according to the
table below.
INFORMATION
▪ Protection against bursting: the glycol will prevent the
piping from bursting, but NOT the liquid inside the
piping from freezing.
▪ Protection against freezing: the glycol will prevent the
liquid inside the piping from freezing.
EBLQ+EDLQ011~016CAV3+W1 + EK(2)CB07CAV3 +
Daikin Altherma low temperature monobloc
DIR
2P
Y
N
L
a
EKMBUHCA3V3+9W1
4P522034-1 – 2018.01