Install Instructions

Document No. 129-905
Installation Instructions
March 26, 2015
Page 14 of 18 Siemens Industry, Inc.
Table 8. 900 Series Expert Settings Parameters.
(Only available if logged in as an Expert.)
CAUTION:
P900 Series parameters are used by professional HVAC technicians during the system commissioning
process. Interlocks and time delays are defeated while using P900 parameters. Use of these parameters by
non-qualified personnel may result in equipment damage.
Parameter Definition Display Value Range Default Extended Definition
P901 Test Compressor 1 Y1 TEST
ON
OFF
OFF
OFF = Relay not energized
ON = Relay energized
P902 Test Compressor 2 Y2 TEST
ON
OFF
OFF
OFF = Relay not energized
ON = Relay energized
P903 Test Reversing Valve O/B TEST
ON
OFF
OFF
OFF = Relay not energized
ON = Relay energized
P904 Test Fan G TEST
ON
OFF
OFF
OFF = Relay not energized
ON = Relay energized
P905 Test Heat Stg 1 W1 TEST
ON
OFF
OFF
OFF = Relay not energized
ON = Relay energized
P906 Test Heat Stg 2 W2 TEST
ON
OFF
OFF
OFF = Relay not energized
ON = Relay energized
P907 Test Output 1 OUT1 TST
ON
OFF
OFF
OFF = Relay not energized
ON = Relay energized
P908 Test Output 2 OUT2 TST
ON
OFF
OFF
OFF = Relay not energized
ON = Relay energized
P909 Test Output 3 OUT3 TST
ON
OFF
OFF
OFF = Relay not energized
ON = Relay energized
P911 Expert Password XPRT PW 50:00 to 99:99 99:99
Auxiliary Sequences
The RDY2000 primary sequences are designed to
control single and multi-stage heating/cooling systems to
maintain a user-selected temperature setpoint.
The following auxiliary sequences are available to
optimize occupant comfort and system efficiency:
Humidification
Parameters
• P317/ P318/P319: One of these must be set to 1
• P320: NO (default) = Humidification will only
occur if there is a call for heating. YES =
Humidification relay will be energized
independently of heating and cooling relays.
• Humidity Setpoint: User adjustable to desired
level in humidification mode.
Sensors: Onboard humidity sensor or optional remote
humidity sensor.
The humidification relay will energize when measured
humidity drops approximately 4% below setpoint and will
de-energize when measured humidity reaches setpoint.
Deadbands and proof timers are in force to prevent short
cycling.