Phason Supra-RS, Руководство пользователя

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Chapter 3: Configuration
58 Phason
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Configuring optional features
In addition to configuring the main control functions (startup timer, temperature units, and so on)
and control stages (variable stages and relays), the Supra has some added features you can configure
or enable. Depending on your setup, you will need to configure some or all of the optional features.

Configuring hysteresis (below)

Configuring de-icing (on page 59)

Selecting a humidity zone (on page 60)

Configuring the pulse counter (on page 61)

Selecting motor curves (on page 62)

Configuring warnings (on page 62)
Configuring hysteresis
Hysteresis helps prevent damage to the relays, variable stages, and equipment connected to them by
preventing the stages from switching on and off rapidly when the temperature is hovering close to
the
set point
.
For example, a household thermostat might turn on a furnace at 68 °F when the house is cooling
down, but turn it off at 72 °F when the house is warming up. The difference between these two
values is the hysteresis.
Use the
Hysteresis worksheet
on page 129 when configuring hysteresis. The
worksheet contains more-detailed explanations about the settings, as well as the
defaults and ranges.
To set hysteresis values
1. From the Main Menu, select Maintenance (2).
2. From the Maintenance menu, select Hysteresis (7).
The display should look like the following example.
3. Scroll to the second line and then press
ENTER
.
HYSTERESIS
H/C Stages 0.5°F
VAR Idle Off 0.3°F
Actuator 0.3°F