Alfa Laval Micro - 22 Options; Under Floor Heating Thermostat; First Fix-Jig

Alfa Laval Micro
Installation, service and operating instruction
67
22 Options
The mounting instructions are described for a new installation. If the kits are supposed to be installed on an
already installed subsystem, release the water pressure and disconnect the electrical power supply before
starting. The options must be installed by an authorized installation contractor.
Under floor heating thermostat 22.1
Heating systems with under floor heating have to be equipped with a heating thermostat. If
the heating system is not equipped with the thermostat, the under floor heating system and
floors in general might get damaged.
1. First disconnect the substation electrical power supply cable. Disconnect the
electrical plug on the circulation pump.
2. Attach the electrical box for under floor heating.
Connect the new power supply cable from the electrical box to the circulation pump.
3. Reconnect the existing power supply cable to the connection on the electrical box.
4. Attach the thermostat to the pipe for heating supply.
5. Set the correct maximum temperature value for the thermostat.
6. Attach all electrical wires with the necessary amount of straps. It is important not to
attach electrical wires on primary heating pipes and sharp edges.
Set recommended settings for under floor heating systems. Instructions regarding installation parameters see
chapter 12.
Parameters and recommended settings for under floor heating:
Parameter
Parameter
N:o
Factory Default Setting
Optional Setting
Display
Description
Display
Description
Category 1 Parameters - Programmable Thermostat Settings
OTC heat curve
15:OC
5
1 to 40
1 to 40 adjustment in steps
of 1
Category 2 Parameters - System Settings (press PROGRAM to access this category)
Economy function
3:Pd
0
Diff between outside
and calculated water
supply temperature
0 to 20
If the calculated water
supply temperature is not
greater than the outside
temperature by this
amount the heating will
switch off.
Category 3 parameters – Boiler settings (press PROGRAM to access this category)
Maximum central heating
set point 2)
1:CH
45
90°C or obtained
from the boiler
40 to
90
40°C to 90°C adjustment in
1°C steps
First fix-jig 22.2
To save time and efficiency the installation, Alfa Laval offers a first-fix- jig including shut-off valves. The first fix-
jig is available in three different models, with five, six or seven shut-off valves.
Picture 60
Picture 61
Picture 62
1. Mount the first fix-jig to the connection points. Tighten with 45 Nm.
2. Mount and connect the substation to the first fix-jig. Tighten with 45 Nm.
Picture 59