Operating Instructions
Table Of Contents
- Manual Organization
- Manual Conventions
- Manual Symbols
- Datamate Software
- Getting Help
- Where To Send Comments
- Introduction
- Basic Operation
- Application 2273: Multiple Compressor Heat Pump with Reversing Valve Control and Mixed Air Control
- Application 2274: Multiple Heating and Cooling Heat Pump with Mixed Air and Internal Reversing Valve Control
- Application 2290: Heat Pump ControlIer Multi Stage Slave Mode
- Overview
- Overview
Point Database
Description Address Application Description
Dl OVRD SW 19 2273, 2274, 2290 Actual indication of the status of the override switch (not
physically available on all temperature sensor models) at the
room temperature sensor. ON indicates that the switch is
being pressed. OFF indicates that the switch is released.
Valid input: ON or OFF
OVRD TIME 20 2273, 2274 Amount of time in hours that the controller will operate in
day/occupied mode when the override switch is pressed
while the controller is in night/ unoccupied mode.
NGT OVRD 21 2273, 2274 Indicates the mode that the controller is operating in with
respect to the override switch. NIGHT indicates that the
switch has not been pressed and the override timer is not
active. DAY indicates that the switch has been pressed and
the override timer is active. The controller then uses a day
mode temperature setpoint. This point is only in effect when
DAY.NGT (Point 29) indicates night mode.
FREE CLG 23 2273, 2274 Point commanded by the field panel PPCL to enable or
disable mixed air control (free cooling).
DI 2 24 2273, 2274, 2290 Actual status of a contact connected to the controller at Dl 2.
ON indicates that the contact is closed; OFF indicates that
the contact is open. If a wall switch is used, it is connected
to DI 2. See WALL SWITCH (Point 18).
DI 3 25 2273, 2274, 2290 Actual status of a contact connected to the controller at
Al 3/Dl 3. ON indicates that the contact is closed; OFF
indicates that the contact is open. When a contact is
connected at Dl 3, Al 3 is not available. See AUX TEMP
(Point 15).
DI 4 26 2273, 2274, 2290 Actual status of a contact connected to the controller. ON
indicates that the contact is closed; OFF indicates that the
contact is open.
CMP2 MlN OFF 27 2273 Minimum time, in minutes, that compressor 2 will remain
OFF before turning ON.
HTG2 MlN OFF 27 2274 Minimum time, in minutes, that heating compressor 2 will
remain OFF before turning ON.
CMP2 MlN ON 28 2273 Minimum time, in minutes, that compressor 2 will remain ON
before turning OFF.
HTG2 MlN ON 28 2274 Minimum time, in minutes, that heating compressor 2 will
remain ON before turning OFF.
DAY.NGT 29 2273, 2274, 2290 Indicates the mode in which the controller is operating.
Day temperature setpoints are used in day mode.
Night temperature setpoints are used in night mode. This
point is normally set by the field panel.
CLG CMP1 ON 30 2274 Value, in percent, that the cooling temperature control loop
output must exceed for cooling compressor 1 to turn ON.
Actual turn on is subject to the CLG1 MlN OFF (Point 32)
time being expired.
Siemens Building Technologies, Inc. 19