Controls - Johnson Controls RC Series Engineering Manual

Controls

Control General Description
CCM Control The CCM (Compressor control module)
is a more reliable replacement for
electro-mechanical control applications.
It features a small microprocessor
board that handles the lockout function
of the unit. A second microporcessor
handles the unit mounted thermostat for
maintaining accurate room temperature.
Versatec Control The Versatec Control is a
microprocessor based board that adds
the features of emergency shutdown
(ES), night setback (NS), water freeze
sensing (FS), Load Shed (LS) and
condensate overfl ow (CO). The
Versatec Control also features Optional
Field servicing LED's for mode, Fault
and diagnostic indication.
FX10 The FX10 microprocessor control is self
contained control featuring LP, LOC,
HP, LWT, and condensate overfl ow
fault modes can be displayed on BAS
system. Optional handheld Medium User
Interface (MUI) Control can be used for
additional setup or servicing. Program
customization is possible. This control is
suited for both single and dual capacity
compressors as well as PSC and ECM
fan motors.
FX10 w/ N2 FX10 Control functions as both unitary
heat pump control and DDC communica-
tion, therefore detail operational and
fault information is available to BAS.
Other features are same as FX10 with
addition of Johnson Controls N2 compat-
ibility.
FX10 w/ LonWorks FX10 Control functions as both unitary
heat pump control and DDC communica-
tion, therefore detail operational and
fault information is available to BAS.
Other features are same as FX10 with
addition of LonWorks compatibility.
FX10 w/ BACnet FX10 Control functions as both unitary
heat pump control and DDC communica-
tion, therefore detail operational and
fault information is available to BAS.
Other features are same as FX10 with
addition of BACnet compatibility.
Standard CCM Control Features
Compressor control module (CCM) controls are standard on the
RC Series console heat pump. This control features unit mounted
thermostat and switches,
Features of the standard control are:
• Easy to understand color coded thermostat adjustment markings.
• Large, rocker type mode and fan switches.
• Internally mounted fan switch to choose cycled or constant
fan operation.
Application
Residential and commercial Dial thermostat with Hi and
applications requiring minimal but Low fan speeds, and auto
reliable controls. Includes Random changeover or cont fan
Start, High and low pressure selection switches.
switches and auto changeover
capability.
Residential and commercial Optional fi eld servicing LED
applications requiring more controls board for mode, fault and
features than CCM and Includes diagnostic indication
Random Start, High and low
pressure switches, auto changeover
capability, emergency shutdown
(ES), night setback (NS), load shed
(LS), water freeze sensing (FS), and
condensate overfl ow (CO).
Commercial applications using sin- Optional Medium User
gle and dual capacity compressors Interface (MUI) can be
with either PSC or ECM fan motors. used as a
Also suitable for multi-compressor fi eld service tool.
products. Cannot be integrated
with centralized building automation
systems. Software can be custom-
ized for specifi c projects.
Same as FX10 with Johnson Optional Medium User
Controls N2 BAS compatibility. Interface (MUI) can be
used as a
fi eld service tool.
Same as FX10 with LonWorks BAS Optional Medium User
compatibility. Interface (MUI) can be
used as a
fi eld service tool.
Same as FX10 with BACnet BAS Optional Medium User Inter-
compatibility. face (MUI) can be mounted
or used as a
Due to communication speed, fi eld service tool.
no more than 30 units should
be connected to a single trunk
of the network.
• High pressure and low pressure safety controls to protect the
unit components.
• Lockout circuit to shut down unit operation upon receipt of a fault
indicator from the safety controls.
• A 24 volt control circuit allows for safe and easy diagnosis.
9
RC SERIES ENGINEERING GUIDE
Display/Interface Protocol
None
None
Standalone
Johnson
Controls
N2 network
LonWorks
BACnet - MS/
TP
(19,200 Baud
Rate)
Thermostat Options
Unit Mounted Digital
Dial Thermostat
Remote Mounted
Standard Thermostat
Unit Mounted Digital
Dial Thermostat
Remote Mounted
Standard Thermostat
Remote Mounted
Standard Thermostat
Remote Mounted
Sensor
Remote Mounted
Standard Thermostat
Remote Mounted
Sensor
Remote Mounted
Standard Thermostat
Remote Mounted
Sensor
Remote Mounted
Standard Thermostat
Remote Mounted
Sensor