Sub-Menu Hgw - Thermia Atria Optimum Installation Manual

Installation Guide
9.8

Sub-menu HGW

The menu applies to the heat pumps with de-superheater and only appears if ON in SERVICE -> INSTALLATION -> SYSTEM -> ADDITION -
> HGW menu is selected.
Menu selection
HGW TEMP.
TEMP DIFF
HOT WATER DIFF.
HOT WATER TO RAD.
MAX TEMP.
START HGW
INITIALIZING HGW
INTEGRAL DELAY
HGW-SHUNT TIME
HGW INT. BOUND.
HGW INTEGRAL
PULSE WIDTH
58
Domestic heat pumps
Meaning
Shows the HGW sensor after the de-superheater (the supply temperature to water heat-
er) in °C.
Desired difference between the HGW sensor and water heater's start sensor.
Shows actual difference between the HGW sensor and water heater's start sensor.
If there is a heat demand, the HGW shunt switches to the heating system when the
weighted value is greater than the total of the START temperature for hot water and this
value. Example: 40°+3K = at a temperature of 43°C in the water heater, the shunt
switches to the heating system.
Max temperature of the water in the water heater. The temperature is measured on the
peak sensor in the water heater.
Domestic hot water can have this temperature, which can
N
mean that an external mixer valve may be required.
The number of seconds the HGW shunt is to open at HGW start is the starting point of
shunt opening. The opening time for the HGW shunt from fully closed to fully open to-
wards the water heater is 30 seconds.
The time in seconds before control of HGW shunt starts after HGW start.
Delay of integral calculation in seconds after the integral value for HGW has been
reached.
The time that the signal is active to open or close the HGW shunt completely.
Integral value (parameter) for HGW.
Shows the actual value for the HGW integral. Plus indicates that the shunt opens towards
the water heater and minus indicates that the shunt opens towards the heating system.
How long the plus or minus signal to the shunt is to be high when the HGW integral has
been reached.
VMGFP202
Factory setting
-
20K(range: 15K /
35K)
-
3K(range: 1K /
10K)
95°C(range:
60°C / 100°C)
7S(range: 0S /
30S)
60S(range: 10S /
90S)
10S(range: 5S /
120S)
35S(range: 15S /
60S)
60(range: 10 /
120)
-
0.25S(range:
0.20S / 1.00S)
Thermia Värmepumpar