Leviton omnistat 3 Directives D'installation page 16

Two Speed Heat Pump (3 Stage Heat / 2 Stage Cool) - Continued
4. Press [FAN] again. The thermostat will turn off, as evidenced by a power icon
appearing in the lower left-hand corner, no temperature displayed, and the fan
stopping.
5. Press [FAN] one more time. The thermostat will turn on, restoring the temperature
display and setting the fan to automatic mode (engage as necessary when an
appropriate heating or cooling call is made).
6. Test the "Heat" mode by performing the following steps:
a. Tap the "-" or "+" button one time – this will bring up the raise/lower setpoint,
as well as a " flame" or "snowflake" icon below the setpoint.
b. Tap the Fan button as necessary, to change the icon below the setpoint to "
flame" (Heat mode).
c. Use the "+" button to raise the desired heat setpoint 1 degree above the
current temperature - the heating unit should come on. NOTE: Ensure that
the heating system is actually heating.
d. After approximately 2-3 minutes, raise the heat setpoint to 3 degrees above
the current temperature – the second stage of heat will engage.
e. Use the "-" button to lower the heat setpoint back below the current
temperature. Ensure that the heating unit goes off.
7. Test the "Cool" mode by performing the following steps:
a. Tap the "-" or "+" button one time – this will bring up the raise/lower setpoint,
as well as a " flame" or "snowflake" icon below the setpoint.
b. Tap the Fan button as necessary, to change the icon below the setpoint to
"snowflake"
(Cool mode).
c. Use the "-" button to lower the desired cool setpoint 1 degree below the
current temperature - the cooling unit should come on.
d. After approximately 2-3 minutes, lower the cool setpoint to 3 degrees below
the current temperature – the second stage of cool will engage.
e. Use the "+" button to raise the cool setpoint back above the current
temperature. Ensure that the cooling unit goes off.
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