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UP

C

O

B

W

SUBBASE INSTALLATION

4

Caution: 
Electrical Hazard

Failure to disconnect the 
power before beginning to 
install this product can cause 
electrical shock or equipment 
damage.

Mercury Notice:

All of Pro1’s products are 
mercury free. However, if the 
product you are replacing 
contains mercury, dispose of it 
properly. Your local waste 
management authority can give 
you instructions on recycling 
and proper disposal.

Horizontal mount

Horizontal mount

Vertical mount

Vertical mount

For vertical mount put 

one screw top and one 

screw bottom. 

For horizontal mount put 

one screw left and one 

screw right.

RH

RC

G

Y

Summary of Contents for True Comfort T905pro1

Page 1: ...Page Battery Power Hardwire Common Wire Hardwire Common Wire with Battery Backup Power Type 1 n o i t p i r c s e D Gas or Oil Heat Electric Furnace Heat Pump No Aux or Emergency Heat Heat Pump with Aux or Emergency Heat Multi stage Systems Heat Only Systems Cool Only Systems Millivolt Yes Yes Yes No No Yes Yes Yes Rev 0850 Una versión española de este manual puede ser descargada en www pro1iaq co...

Page 2: ...old air ducts That are in direct sunlight With an outside wall behind the thermostat In areas that do not require conditioning Where there are dead spots or drafts in corners or behind doors Where there might be concealed chimneys or pipes Pick an installation location that is easy for the user to access The temperature of the location should be representative of the building Wall locations 2 PRO1...

Page 3: ... is shown Program Menu Options Shows different options during programming Indicates the current room temperature Programmable Time Period Icons This thermostat has 4 programmable time periods per day Important The low battery indicator is displayed when the AA battery power is low If the user fails to replace the battery within 21 days the thermostat display will only show the low battery indicato...

Page 4: ... Pro1 s products are mercury free However if the product you are replacing contains mercury dispose of it properly Your local waste management authority can give you instructions on recycling and proper disposal Horizontal mount Horizontal mount Vertical mount Vertical mount For vertical mount put one screw top and one screw bottom For horizontal mount put one screw left and one screw right RH RC ...

Page 5: ...d by batteries Wire specifications Use shielded or non shielded 18 22 gauge thermostat wire PRO1 Tips Wiring Terminal Designations If you are replacing a thermostat make note of the terminal connections on the thermostat that is being replaced In some cases the wiring connections will not be color coded For example the green wire may not be connected to the G terminal Loosen the terminal block scr...

Page 6: ... C W G C L2 L1 HOT R HEAT RELAY FAN RELAY COMPRESSOR RELAY 6 2 1 FAN RELAY COMPRESSOR RELAY 6 2 HEAT RELAY FAN RELAY 6 2 Typical 1H 1C heat pump system C L2 L1 HOT R HEAT CHANGE OVER VALVE FAN RELAY COMPRESSOR RELAY 6 4 2 5 1 C L2 L1 HOT R HEAT RELAY 6 2 1 Typical 1H 1C system 2 transformer Typical heat only system Typical heat only system with fan Typical cool only system C L2 L1 HOT R HEAT RELAY...

Page 7: ...les and a larger swing setting will cause fewer cycles Keypad lockout allows you to configure the thermostat so that none or some of the keys do not function The heating swing setting is adjustable from 0 4 F to 2 F For example A swing setting of 0 5 F will turn the heating on at approximately 0 5 F below the setpoint and turn the heating off at approximately 0 5 F above the setpoint Pick PA or FU...

Page 8: ...r heat Fan Operation LCD Will Show Use the or key to select the minmum cool setpoint 44 ºF This feature allows you to set a minimum cool setpoint value The setpoint temperature cannot be lowered below this value Cooling Temperature Setpoint Limit Use the or key to select 12 or 24 hour clock 12 Hour Clock You can select either a 12 or 24 hour clock setting 12 or 24 Hour Clock Use the or key to turn...

Page 9: ...application Heat Off Cool Heat Off Cool Off Heat Off Cool Auto Tech Setup Steps Continued from the previous page Beep System Switch Display Light LCD Will Show Use the or key until the desired application is flashing OFF Allows you to put your phone number in the display Select ON to use this feature then press NEXT STEP Contractor Call Number Use the or key to move from one character to another U...

Page 10: ...LLATION Mount Thermostat Align the 4 tabs on the subbase with corresponding slots on the back of the thermostat then push gently until the thermostat snaps in place On the back of the thermostat insert 2 AA Alkaline batteries included ...

Page 11: ...setting to select the current day of the week Press NEXT STEP The current hour is flashing Use the or key below the time setting to select the current hour When using 12 hour time make sure the correct a m or p m choice is selected Press NEXT STEP Minutes are now flashing Use the or key below the time setting to select current minutes Press DONE when completed 1 2 3 4 5 6 7 8 All programmable Pro1...

Page 12: ...AKE time period Note If you want the fan to run continuously during this time period select ON with the FAN key Use the or temperature setpoint keys on the right side of your screen to make your temperature selection for the weekday WAKE period Press NEXT STEP Repeat steps 4 through 6 for Saturday WAKE time period for Saturday LEAVE time period for Saturday RETURN time period and for Saturday SLEE...

Page 13: ...e weekday WAKE period Press NEXT STEP Repeat steps 4 thru 6 for Monday LEAVE time period for Monday RETURN time period and for Monday SLEEP time period Repeat steps 4 thru 7 for each of the remaining days in the week PROGRAMMING THE THERMOSTAT 13 1 2 3 4 5 6 7 8 A Note About Auto Changeover Auto changeover will switch between heating and cooling as needed It is very important to make sure the cool...

Page 14: ...is adjustable from 0 4ºF to 2 0ºF Cooling is adjustable from 0 4ºF to 2 0ºF 18 to 30 VAC NEC Class II 50 60 Hz for hardwire common wire Battery power from 2 AA Alkaline Energizer batteries 32º to 105º 0º to 41ºC 90 non condensing maximum 4 7 W x 4 4 H x 1 1 D 14 SPECIFICATIONS CONTACT INFORMATION Specifications Pro1 IAQ Inc 1111 S Glenstone Suite 2 100 Springfield MO 65804 Toll free 1 888 Pro1iaq ...

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