78
GAS/EL
HP
OR
GAS/EL
HP
ON
1
2
3
ON
1
2
3
OR
O
B
B
O
ON
1
2
3
ON
1
2
3
GAS/
ELEC
OR
GAS
/ELEC
ON
1
2
3
ON
1
2
3
GAS/EL
GAS
O
ON
1 2
3
HP
ELEC
B
Installation Instructions
This dip switch configures the thermostat to control a
conventional gas/electric system or a heat pump. If your
system is anything other than a heat pump, leave this
switch set for GAS/EL.*
*For some commercial heat pumps, this switch may need
to be set for GAS/EL. Consult the commercial heat pump
literature.
When the GAS/EL or HP dip switch is configured for HP,
this dip switch (O or B) must be set to control the
appropriate reversing valve. If O is chosen, the W1/O/B
terminal will energize in cooling. If B is chosen, the
W1/O/B terminal will energize in heating.
1. When
GAS/EL or HP
is set for
GAS/EL
:
This switch (GAS or ELEC) controls how the thermostat
will control the Fan (G) terminal in heating mode. When
GAS
is chosen, the thermostat
will not
energize the
Fan (G) terminal in heating. When
ELEC
is chosen the
thermostat will energize the fan in heating.
2. When
GAS/EL or HP
is set for
HP
:
This switch (GAS or ELEC) defines the Aux Heat type.
When GAS is chosen, the auxiliary heat will not be
allowed to run during heat pump operation. When
using a Dual Fuel system, set this switch for GAS.
When ELEC is chosen, up to two stages of auxiliary
strip heat will be allowed to run.
Explanation of Thermostat Dip Switches
Dip switches are located on the back of the thermostat
Summary of Contents for ColorTouch T8900
Page 1: ...Owner s Manual Installation Guide COMMERCIAL MODEL T8900 with Humidity Control ...
Page 36: ...28 Main Menu Buttons Holidays Holiday Schedule OFF Edit Holidays Preset Holidays Holidays ...
Page 56: ...48 Main Menu Buttons Settings The user may limit the maximum Cooling Setpoint ...
Page 57: ...49 Main Menu Buttons Settings The user may limit the minimum Heating Setpoint ...
Page 58: ...50 Main Menu Buttons Settings The user may adjust the ADR Cooling static Setpoint ...
Page 59: ...51 Main Menu Buttons Settings The user may adjust the ADR Heating static Setpoint ...
Page 95: ...Printed on recycled paper P N 88 1091 Rev 1 06 15 Patents Issued Pending ...