Catalogue

36 CAB-PRC001-EN
Controls
Important: This is not a normal operating mode. The source of the invalid zone temperature
needs to be corrected to restore normal operation.
** 'Generic' i/o - if there is unused i/o the user may create a new point to reference the i/o. But there is no dedicated 'generic'
i/o like on ZN
Binary inputs -- t
here is also a defrost and fan status (for 1,2,3 speed fans) for UC400 and ZN520.
The ECM fan does not use the Binary inp
ut for fan status but gets the info over IMC from the ECM.
ZN520 also had a binary input for fan status. ZN520 also had de
frost but it was wired directly to the compressor (IOP
explains this).
Table 21. Controller input/output summary
ZN010 ZN510 ZN520 UC400
Binary Outputs X
3-Speed Fan XXXX
2-Position Hydronic Valve X X X X
2-Position Fresh Air Damper X X X
1-Stage Electric Heat X X X X
3-Wire Economizer Damper X X
3-Wire Hydronic Valve XX
2-Stage Electric Heat XX
Reheat (hydronic or electric) X X
Generic X X X **
Binary Inputs
Condensate Overflow Detection X X X X
Low Temperature Detection XXXX
Occupancy XXXX
Generic Input X X X **
Analog Inputs
Zone Temperature X X X X
Setpoint X X X X
Fan Mode: Auto, High, Medium, Low X X X X
Entering Water X X X X
Discharge Air XXXX
Outside Air XX
Generic X**
Analog Outputs
Variable speed fan X
Field supplied analog valves X
Note: The generic input and output are for use with a Tracer Building Automation System only.
Table 22. Controller function summary
ZN010 ZN510 ZN520 UC400
Control Functions
Entering Water Temp. Sampling (Purge) X X X X
Auto Changeover XXXX
Fan Cycling X X
Warm-Up X X X
Pre-Cool X X X
Data Sharing (Master/Slave) X X
Random Start X X X X
Dehumidification XX
Acoustic Mode X
Efficiency Mode X
Single Zone VAV Mode X
Staged Capacity (2-Stage Electric Supplementary) X X
Other Functions
Manual Test X X X in TU
Maintenance Timer X X X X
Setpoint Limits X X X X
CAB-PRC001-EN.book Page 36 Tuesday, May 8, 2012 10:11 AM