Data Sheet for Product

Page 2 of 4 Siemens Industry, Inc.
 Two Compressor Heat Pump with Reversing
Valve and Mixed Air Control (2071)
 Heating and Cooling Heat Pump with Internal
Reversing Valve and Mixed Air Control (2072)
 Multiple Compressor Heat Pump with Reversing
Valve and Mixed Air Control (Application 2273)
 Multiple Heating and Cooling Heat Pump with
Mixed Air Control and Internal Reversing Valve
(Application 2274)
Control algorithms are preprogrammed. The controller
is ready to operate after selecting the application. If
desired, the operator may adjust the room
temperature setpoints and other parameters. The
controller is designed for operation and modification
without vendor assistance.
Hardware
Controller Board
This controller provides all wiring terminations for
system and local communication and power. The
cable from the room sensor (purchased separately)
connects to an RJ-11 jack on the controller. All other
connections are removable terminal blocks. The
controller assembly is mounted on a plastic track that
mounts directly on the terminal box. An optional
enclosure (P/N 550-002 or 540-155) protects the
controller assembly.
Room Sensor
The room sensor connection to the controller board
consists of a quick-connect RJ-11 jack. This
streamlines installation and reduces controller start-up
time.
Heat Pump Controller
Specifications Single Stage
Power Requirements
Operating Range 24 Vac +/-20%, 50 or 60 Hz
Power Consumption 3 VA (plus 12 VA per DO)
Dimensions 4-1/8" W × 7-3/4 " L × 1-1/2" H
Weight approx. 3 lbs (1.35 kg)
Controlled Temperature
Accuracy, Heating or
Cooling
±1.5°F (0.9°C)
Inputs
Analog 1 room temperature sensor
1 setpoint (optional)
1 mixed air temperature sensor
Digital 2 dry contacts
Outputs
Analog N/A
Digital 6 DO 24 Vac optically isolated
solid state switches @ 0.5 amp
Communications
Remote 4800 bps FLN Trunk
Local WCIS
Ambient Conditions
Storage Temperature -13°F to 158°F (-25°C to 70°C)
Operating Temperature 32°F to 122°F (0°C to 50°C)
Humidity Range 5% to 95% rh (non-condensing)