Safety Considerations

installation, start-up and operating instructions

COMMERCIAL THERMOSTAT (P/N TSTATBBPCM01-A)

IMPORTANT: Read entire instructions before starting the installation.

Read and follow manufacturer instructions carefully. Follow all local electrical codes during installation. All wiring must conform to local and national electrical codes. Improper wir- ing or installation may damage thermostat.

Recognize safety information. This is the safety alert symbol

. When the safety alert symbol is present on equipment or in the instruction manual, be alert to the potential for per- sonal injury.

Understand the signal words DANGER, WARNING, and CAU- TION. These words are used with the safety alert symbol. DANGER identi®es the most serious hazards which will re- sult in severe personal injury or death. WARNING signi®es a hazard which could result in personal injury or death. CAU- TION is used to identify unsafe practices which would result in minor personal injury or property damage.

GENERAL

Bryant's 7-day, commercial, programmable thermostats are wall-mounted, low-voltage thermostats which maintain room temperature by controlling the operation of an HVAC (heat- ing, cooling and ventilation) system. Separate heating and cooling set points and auto-changeover capability allow occu- pied and unoccupied programming for energy savings.

All thermostats allow up to 4 time/temperature settings to be programmed per 24-hr period. Each thermostat stores pro- grams for 7 independent days. Batteries are not required. Dur- ing power interruption the internal memory stores comfort schedules for an unlimited time while the clock continues to run for at least 72 hours.

The thermostat can be con®gured to accept several different equipment con®gurations, from single-stage heating and cool- ing to 3 stages of heating and 2 stages of cooling. The ther- mostat comes factory con®gured for 1 stage of cooling and 1 stage of heating.

INSTALLATION

I. THERMOSTAT LOCATION

The thermostat should be mounted:

·approximately 5 ft from the ¯oor

·close to or in a frequently used room, preferably on an in- side partitioning wall

·on a section of wall without pipes or ductwork

The thermostat should not be mounted:

·close to a window, on an outside wall, or next to a door leading to the outside

·where exposed to direct light and heat from a lamp, the sun, a ®replace, or any other temperature-radiating object which may cause a false reading

·close to or in direct air¯ow from supply registers or return air grilles

·in areas with poor air circulation (such as behind a door or in an alcove)

Cancels: New	II TSTAT-1
	6/15/96

II. SET DIP SWITCHES

There are 4 small switches on the back of the circuit board which must be con®gured by the installer. The ON position is indicated by small letters on the switch. Ignore the num- bers (1-4) on the switch. The switch designation (A-D) is printed on a sticker next to the switch. To change a switch position, use the corner of a small screwdriver to slide the switch ON or OFF. Set the DIP switches before installing the thermostat.

A. Air Conditioner or Heat Pump Selection (Switch A)

Use switch A to select between air conditioning and heat pump applications. A heat pump application uses a reversing valve. Set switch A to OFF for air conditioning applications (no re- versing valve). Set switch A to ON for heat pump applica- tions (O is used to energize the reversing valve). The factory setting is OFF.

B. Compressor Stage Selection (Switch B)

Switch B is used to select between a single-stage and a 2-stage compressor. Set switch B to OFF for a single-stage compres- sor. Set switch B to ON for a 2-stage compressor. The factory setting is OFF.

C. Outdoor Air or Remote Room Sensor (Switch C)

Switch C is used to con®gure the thermostat to work with either a outdoor air sensor or a remote room sensor. The sen- sor for the application must be connected to terminals S1 and S2 of the thermostat. Set switch C to OFF for a outdoor air sensor. Set switch C to ON for a remote room sensor. The fac- tory setting is OFF.

D. Averaging of Sensors (Switch D)

Switch D is used if a remote room sensor is being used (switch C set to ON). The remote room sensor reading can be averaged with the sensor reading of the thermostat. Set switch D to OFF if averaging is not required. To average the readings of the thermostat and remote room sensors, set switch D to ON. The factory setting is OFF.

III. INSTALL THERMOSTAT

WARNING: Before installing thermostat, turn off all power to the unit. There may be more than one power disconnect. Electrical shock can cause injury or death.

1.Turn off all power to unit.

2.If an existing thermostat is being replaced:

a.Remove existing thermostat from the wall.

b.Disconnect wires from existing thermostat. Do not allow wires to fall back into the wall. As each wire is disconnected, record wire color and terminal connection.

c.Discard or recycle old thermostat.

NOTE: Mercury is a hazardous waste and must be disposed of properly.