Specifications

54
ClimateMaster Water-Source Heat Pumps
Tranquility Modular (TRM) Series
0.75 to 3 Ton Vertical Hi-Rise Units
CXM AND DXM SERIES CONTROLLERS
The CXM and DXM Series Controllers are designed to
enhance Water-Source Heat Pump unit performance with
the ability to coordinate complete systems. CXM Series
controllers offer complete stand-alone unit control. DXM
Series controls add advanced unit operation and system
control features. Either control can allow you to connect
your heat pump system to a LonWorks or MPC (Multiple
ProtoCol -- BACNET, N2, Modbus) DDC control system
which includes lighting and other energy saving controls.
The CXM and DXM Series are the most advanced
controllers made by any heat pump man u fac tur er today .
STANDARD CXM CONTROL FUNCTIONS
The CXM controller package offers all of the basic
features available with elec tro me chan i cal systems,
plus 15 additional standard functions. This group of
added features includes condensate overfl ow, anti-
short cycle, random start, aircoil low temperature
limit (except GC Series and water-to-water units),
under/over voltage protection, and intelligent reset,
designed to automatically restart a unit within a specifi c
period of time following a fault, given the fault has
been adequately corrected. Also included are LED
fault and status indication to aid in diagnostics and
troubleshooting. These added features, and the many
others provided, are specifi cally designed to improve
the life expectancy, reliability, and serviceability of
Water-Source Heat Pumps. The CXM is compatible with
most heat pump thermostats.
ADDITIONAL DXM CONTROL FUNCTIONS
The DXM controller adds system functions such as
emergency shutdown and night setback with override to
the stand-alone capability provided by the CXM. Fully
confi gured, the DXM offers 17 additional features over
the CXM, including advanced system control capabilities
such as intelligent fan speed, reheat control, two-stage
compressor, and boilerless electronic heat. The DXM is
compatible with almost any type of thermostat, whether
heat pump or heat/cool.
UNIT/SYSTEM OPERATING EFFICIENCY
Emergency shutdown, night setback, pump restart and
advanced unit functional control all work to enhance the
performance of your system. These features are stan dard
on DXM Series Electronic Controllers.
COMFORT CONTROL
User se lect able or in tel li gent control of fan speed,
de hu mid i fi ca tion modes, out door air damper control,
and a com plete of fer ing of ac cu rate electronic
thermostats add up to in creased comfort through
superior unit control.
DIAGNOSTICS
ClimateMaster controls provide on-board diagnostics
which highlight eight (seven for GC Series) different
reasons for unit malfunction, speeding up service time,
elim i nat ing un nec es sary service charges, and minimizing
down time. The exclusive UPS (Unit Performance
Sentinel) provides an early warning of ineffi cient
operating conditions before unit shutdown actually
occurs. Fault types are not only indicated at the control,
but are kept in memory after a user reset for future
service use. And another ClimateMaster exclusive, fault
types can be displayed on a conventional thermostat
if equipped with a fault LED, or can be remotely
communicated with the DDC option.
CXM Control Board
DXM Control Board