APOGEE Heat Pump Controller—Multi Stage Owner's Manual
30 Siemens Building Technologies, Inc.
Descriptor Address Application Description
NGT DBAND 88 2281, 2283,
2284, 2286,
2287
During night mode, this point indicates the number of degrees
above or below (depending on heating/cooling mode) the night
setpoint that the room temperature can raise or drop before the
fan will be turn ON.
Valid input: 0 to 255°F
MORN DBAND 89 2281, 2283,
2284, 2286,
2287
The number of degrees of variance from the heating or cooling
setpoint at which the controller will terminate morning warm-up or
cool-down and begin normal operation.
Valid input: 0 to 255'F
SWITCH DBAND 90 2281, 2283,
2284, 2286,
2287
The temperature range in degrees that is compared to the
difference between CTL TEMP (Point 78) and CTL STPT (Point
92). The difference exceeding this value is one of the conditions
necessary to change modes between heating and cooling.
Valid input: 0 to 255°F
AUX DSH STPT 91 2281, 2284 The setpoint of the auxiliary radiation control loop.
CTL STPT 92 2281, 2283,
2284, 2286,
2287
The actual setpoint value being used as input for the active
temperature control loop.
DISCH STPT 93 2281, 2284,
2287
The setpoint of the discharge air control loop.
MA STPT 93 2283, 2286 The setpoint of the mixed air control loop.
DSH MIN TEMP 94 2281, 2284 The minimum value to which DISCH STPT (Point 93) can be set
by the room control loop.
DSH MAX TEMP 95 2281, 2284 The maximum value to which DISCH STPT (Point 93) can be set
by the room control loop.
LOOP TIME 98 2281, 2283,
2284, 2286,
2287
The time, in seconds, between control loop calculations.
ERROR STATUS 99 2281, 2283,
2284, 2286,
2287, 2299
The status code indicating any errors detected during controller
power up. A status of 0 indicates there are no problems.
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