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SAFETY SUMMARY & CONTROL DEVICE SETTING
10 SAFETY SUMMARY & CONTROL DEVICE SETTING
Protection
This switch cut out the operation on the DHWT when the water temperature inside DHWT exceed 90ºC.
Cut-Out
Contactors
Current
Voltage
Electric Power
Voltage
Ø
Resistances whole fixing flare nut
Specific heat load
Material
Resistance cord
DHWT sensor
11 GENERAL STANDARD FOR HYDRAULIC INSTALLATION
•
The safety valve unit will fitted at the sanitary water
installation.
•
A pressure reducer must be placed in the DHWT installation.
The nominal pressure of the safety unit will be 8 bar.
•
When the main pressure is more than 6 bar a pressure
reducer should be installed.
•
The water discharge during heating (expansion) is normal.
The volume of this discharge can be up to 3% of the storage
tank's capacity.
•
The pressure regulator device must be working regularly,
depending on the quality of water, in order to remove the
lime's deposits and verify that it is not blockade.
•
A water leakage in the pressure protection device can
exist. The discharge pipe should be always open to the
atmosphere, free of frost and in continuous slope to the
down side.
•
Dielectric bushes must be fitted at the input and output
sanitary water and at the tank circuit connections.
•
Emptying the DHWT: Close the main inlet water valve and
open the relief valve of the security water group.
11
PMML0347B rev.1 - 06/2016
Model
Thermostat
Heating resistances
Units
DHWT
Manual Reset
ºC
90
A
20 (AC1)
V
230V
kW
3.0
V
230V
mm
6.4
"G
1-1/4"
W/cm
14.2
²
INCOLOY 825
Ni-Cr 80/20 Ø 0.45mm
NTC 20k
Ref.
Main inlet water
DHWT inlet connection
Security valve and manual empty
Emptying connection
Check valve
Close valve
1
6
4
Name
2
5
3
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