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Selecting the System Mode 

The T600HCN-1 has four system modes. 

• 

Automatic Mode (auto) 

Automatic changeover between heating and 
cooling. This is the default setting. 

• 

Cooling Mode (cool) 

Cooling operation only. 

• 

Heating Mode (heat) 

Heating operation only. 

• 

Off Mode (off) 

The T600HCN-1 is off. However, when frost 
protection is on (see the 

Enabling Frost Protection 

[Frost pr]

 section) the thermostat still calls for heat, 

if required. 

To set the system mode while in the Main User Menu: 

1.  Answer NO to all prompts until the system mode 

prompt appears in the display. Press YES to set 
the system mode. 

2.  Use the UP/DOWN arrow keys to locate the 

desired system mode. Press YES to select the 
desired system mode. 

3.  Press YES to return to the Status Display Menu or 

NO to return to the system mode selection menu. 

Selecting the Fan Mode 

The T600HCN-1 has three fan mode settings. 

• 

On Fan Mode (on) 

Energizes the fan all the time for both occupied 
and unoccupied periods (even if the system mode 
is set to 

off

). 

• 

Automatic Fan Mode (auto) 

Operates the fan only on a call for heating or 
cooling for both occupied and unoccupied periods. 
This is the default setting. 

• 

Smart Fan Mode (smart) 

Energizes the fan all the time for occupied periods 
and only on a call for heat and cooling in 
unoccupied periods.

 

Note: 

Displayed only if Digital Input DI1 or DI2 is 

configured for remote NSB. 

To select the fan mode while in the Main User Menu: 

1.  Answer NO to all prompts until the fan mode 

prompt appears in the display. Press YES to set 
the fan mode. 

2.  Use the UP/DOWN arrow keys to locate the 

desired fan mode. Press YES to select the desired 
fan mode. 

3.  Press YES to return to the Status Display Menu or 

NO to return to the fan mode selection menu. 

Setting Permanent Hold 

Note: 

Displayed only if Digital Input DI1 or DI2 is 

configured for remote NSB. 

This menu is used to set a permanent hold on the 
internal scheduling or resume the schedule. The 
permanent hold is typically used for nonscheduled 
events that extend for long periods of time. 

There are three selections for this menu: 

• 

Permanent Occupied Hold (occ hold)

 

This selection puts the thermostat into a 
permanent occupied mode using the occupied 
setpoints. 

Occupied hold

 appears in the Status 

Display Menu when this selection is active. 

• 

Permanent Unoccupied Hold 

This selection puts the T600HCN-1 into a 
permanent unoccupied mode using the 
unoccupied setpoints. 

Unoccup hold

 appears in 

the Status Display Menu when this selection is 
active. 

• 

Resume 

This selection cancels the permanent hold and 
enables the regular program schedule. 

To enable the permanent hold feature while in the 
Main User Menu: 

1.  Answer NO to all prompts until the schedule hold 

prompt appears in the display. Press YES to set 
the schedule hold type. 

2.  Use the UP/DOWN arrow keys to locate the 

desired permanent hold type (or 

resume

 

schedule). Press YES to enter the choice. 

3.  Press YES to return to the Status Display Menu or 

NO to change the schedule hold selection again. 

Accessories 

Using the information in Table 5, contact the nearest 
Johnson Controls branch office or wholesale 
distributor to order these accessories. 

Table 5: Optional Accessories 
(Includes Mounting Hardware) 

Item 

Product Code 

Number 

Remote Indoor Temperature Sensor 

SEN-600-1 

Outdoor Air Temperature Sensor 

SEN-600-2 

Duct Mount Temperature Sensor 

SEN-600-3 

Remote Indoor Temperature Sensor 
with Occupancy Override and LED 

SEN-600-4 

 

12    

T600HCN-1 Non-Programmable Thermostat Installation Instructions 

Summary of Contents for T600HCN-1

Page 1: ...the thermostat cover see Figure 1 2 Unlock the Printed Circuit Board PCB by carefully pressing the locking tabs to the right see Figure 2 Open the thermostat s PCB to the left 3 Pull out approximatel...

Page 2: ...e the thermostat 1 Strip each wire 1 4 in 6 35 mm and connect to the appropriate terminal according to the wiring diagram see Figure 5 2 Gently push excess wire back into wall plug the wall hole with...

Page 3: ...24 VAC from equipment transformer 24 VAC common from equipment transformer 24 VAC for heating stage Configurable digital input Configurable digital input Remote room sensor Sensor common Outdoor air s...

Page 4: ...uring normal thermostat operation The menu continually scrolls through the following parameters see Figure 6 Room Temperature System Mode Schedule Status Occupied Unoccupied see Note Outdoor Temperatu...

Page 5: ...Maximum Cooling Cycles per Hour Cool cph Sets the Minimum Heating Cooling Deadband Default 2 0 F 1 1 C See Setting the Heating Cooling Deadband Deadband Determines how the Fan Activates in Response to...

Page 6: ...nfigure Digital Input 2 or NO to advance to the keypad lockout setup prompt 4 Use the UP DOWN arrow keys to locate the desired function for the Digital Input 2 Press YES to select the desired function...

Page 7: ...ows the minimum cooling setpoint prompt See the Setting the Minimum Cooling Setpoint Cool min section for instructions Setting the Minimum Cooling Setpoint Cool min The minimum cooling setpoint establ...

Page 8: ...hes the minimum difference between the heating and cooling setpoints The range is adjustable from 2 to 4 F 1 to 2 C To change the minimum deadband between the heating and cooling setpoints while in th...

Page 9: ...the display Press YES to enter the outdoor sensor calibration menu 2 Use the UP DOWN arrow keys to adjust the correction that should be applied to the sensor reading Press YES to store the offset The...

Page 10: ...de schedule prompt only appears when the thermostat is in the unoccupied state This menu selection gives the user the option of overriding the unoccupied setpoints with the occupied setpoints for the...

Page 11: ...et prompt appears in the display it may be the first prompt Press YES to enter temperature setting menu Press YES to change occupied cooling setpoint Press NO to advance to occupied heating setpoint m...

Page 12: ...rn to the Status Display Menu or NO to return to the fan mode selection menu Setting Permanent Hold Note Displayed only if Digital Input DI1 or DI2 is configured for remote NSB This menu is used to se...

Page 13: ...d to comply with the limits for a Class A digital device and verified to Class B pursuant to Part 15 of FCC Rules These limits are designed to provide reasonable protection against harmful interferenc...

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