GMVC9 GCVC9 Installation Instructions

FURNACE ADVANCED FEATURES MENUS

(accessed through the communicating thermostat)

Submenu Item User Modifiable Options Comments

Heat Airflow Trim (HT TRM)

-10% to +10% in 2% increments,

default is 0%

Trims the heating airflow by the selected

amount.

Heat ON Delay (HT ON

5, 10, 15, 20, 25, or 30 seconds,

default is 30 seconds

Selects the indoor blower heat ON delay

Heat OFF Delay (HT OFF)

30, 60, 90, 120, 150, or 180

seconds, default is 150 seconds

Selects the indoor blower heat OFF delay

Heat Airflow (HT ADJ) 1, 2, 3, or 4

Selects the nominal heating airflow (see

Startup Procedure and Adjustment –

Circulator Blower Speeds for addition

information)

Auxiliary Alarm ON / OFF Enable or Disable Auxiliary Alarm Input

Humidity Setting ON / OFF / IND

Select Humidity Relay Functionality. ON -

Humidifier is turned on with heat demand.

OFF - Humidifier remains off. IND -

Humidifier will cycle with humidification

demand (independent of an active heat

demand)

Humidity Fan Speed 1, 2, 3, 4

Select Humidity Fan Speed (this option is

enabled when Humidity Setting of IND is

selected). 1 - 25%, 2 - 50%, 3 - 75%, 4 -

100% of maximum airflow.

SET-UP

Submenu Item Indication (for Display Only; not User Modifiable)

Mode (MODE) Displays the current furnace operating mode

CFM (CFM) Displays the airflow for the current operating mode

STATUS