Robur GAHP Line AR Series, Installation, Use And Maintenance Manual

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GAHP-AR – Installation, start-up, use and maintenance manual
46
Edition: 2014-08
Differential: 3.6 °F
•
The appliance is functioning: the water in the plant cools down until it reaches the
set-point temperature = +44.6 °F.
•
The appliance switches off: the water in the plant, returning from use, becomes
progressively hotter, until it reaches a temperature of +48.2 °F = 44.6 °F + 3.6 °F.
•
The appliance switches on again, and the plant water cools down again.
•
The cycle is repeated.
Operation in heating mode:
The appliance functions by heating the water until it reaches the set-point temperature. At
this point it switches off. The temperature of the water rises again until it reaches the
temperature corresponding to "set-point + differential"; when this is reached the appliance
switches on again.
Example:
Thermostating:
reading from inlet sensor.
Set-point: +104.0 °F
Differential: -3.6 °F
•
The appliance is functioning: the water in the plant heats up until it reaches the set-
point temperature = +104.0 °F.
•
The appliance switches off: the water in the plant, returning from use, becomes
progressively cooler, until it reaches a temperature of
+100.4 °F = 104.0 °F + (-3.6 °F).
•
The appliance switches on again, and the plant water heats up again.
•
The cycle is repeated.
The following procedure illustrates in detail how to configure the parameters on the
electronic board incorporated in the appliance.
If the procedures for how to access the knob and menus are not familiar, see
paragraphs "Display and knob (encoder)" and "Access to board menus" on page 19
and following.
To set the parameters of menu 3:
You will need: the appliance on and access to the electrical panel – see "Display
and knob (encoder)" on page 19.
Access menu 3. The display shows the first parameter of the menu, number 73:
.