Field-Installed Accessories - York DJ 036 Technical Manual

036-21687-002-A-1105
using CO2 sensors. It uses an inside CO2 sensor to per-
form Demand Ventilation. It can also use an Outside CO2
sensor to perform Differential Demand Ventilation. It uses
a Patented Comfort Ventilation algorithm to provide com-
fortable ventilation air temperature. The patented econo-
mizer-loading algorithm will protect the equipment when
harsh operating conditions exist. Humidity in the occupied
space or return duct can be monitored and controlled via
humidity sensors and the on-board connection for hot gas
re-heat system. It uses the INTELLI-Start™ algorithm to
maximize energy savings by recovering the building from
the Unoccupied Setpoints to the Occupied Setpoints just
in time for the Occupied Time Period to begin. The Sim-
plicity™ INTELLI-Comfort™ balances space temperature,
ventilation air temperature, CO2 and humidity for ultimate
comfort.
Simplicity™ INTELLI-Comfort™ with MOD LINK CON-
•
TROL - The York® Simplicity™ INTELLI-Comfort™ with
Mod Link control is factory installed. It includes all the
features of the INTELLI-Comfort™ control with an addi-
tional control to translate communications from MOD-
BUS to the BACnet MSTP protocol.
• Novar® BAS CONTROL - The Novar® ETC-3 building
automation system controller is factory installed.
Includes supply air sensor, return air sensor, dirty filter
indicator switch, and air proving switch.
• JOHNSON CONTROLS BAS CONTROL - The Johnson
Control YK-UNT-1126 building automation system con-
troller is factory installed. Includes supply air sensor,
return air sensor, dirty filter indicator switch, and air prov-
ing switch.
• CPC BAS CONTROL - The Computer Process Controls
Model 810-3060 ARTC Advanced Rooftop building auto-
mation system controller is factory installed. Includes
supply air sensor, return air sensor, dirty filter indicator
switch and air proving switch.
• HONEYWELL BAS CONTROL - The Honeywell
W7750C building automation system controller is factory
installed. Includes air supply sensor, return air sensor,
dirty filter indicator switch, and air proving switch.
• SMOKE DETECTORS - (supply air & return air) The
smoke detectors stop operation of the unit by interrupting
power to the control board if smoke is detected within the
air compartment.
• COIL GUARD - Customers can purchase a coil guard kit
to protect the condenser coil from damage. This is not a
hail guard kit.
• STAINLESS STEEL HEAT EXCHANGER - For applica-
tions in corrosive environments, this option provides a
full stainless steel heat exchanger assembly.
Unitary Products Group
• STAINLESS STEEL DRAIN PAN - An optional rust-
proof stainless steel drain pan is available to provide
years of trouble-free operation in corrosive environ-
ments.
• BOTTOM DRAIN CONNECTION - An optional bottom
drain connection is available for inside the curb connec-
tions for applications in cold environments to reduce
freezing drain lines.
• PHASE MONITORS - Designed to prevent unit damage.
The phase monitor will shut the unit down in an out-of-
phase condition.
• DIRTY FILTER SWITCH - This kit includes a differential
pressure switch that energizes the fault light on the unit
thermostat, indicating that there is an abnormally high
pressure drop across the filters. Factory installed option
or field installed accessory.
• HINGED FILTER DOOR/"TOOLLESS" BLOWER AND
ACCESS PANELS (not hinged) - This option allows for
easy access and maintenance.
NOTE:Knobs are shipped inside the unit to prevent ship-
ping damage. These must be field installed for
tool-less operation.

FIELD-INSTALLED ACCESSORIES

• SINGLE INPUT ELECTRONIC ENTHALPY ECONO-
MIZERS - Includes a slide-in / plug-in damper assembly
with fully modulating spring-return motor actuator capa-
ble of introducing up to 100% outdoor air with nominal
1% leakage type dampers.
The enthalpy system contains one sensor that monitors
the outdoor air and determines when the air is cool
enough and dry enough to provide free cooling.
The rainhood is painted to match the basic unit and must
be field-assembled before installing.
• MOTORIZED OUTDOOR AIR INTAKE DAMPER -
Includes a slide-in / plug-in damper assembly with a 2-
position, spring return motor actuator which opens to
some pre-set position whenever the supply air blower is
operating and will drive fully closed when the blower unit
shuts down.
The rain hood is painted to match the basic unit and
must be field assembled before installing.
• ELECTRIC HEATERS wired for single point power sup-
ply. These nickel chromium heater elements are pro-
vided with limit and automatic reset capability to prevent
operation at excessive temperatures.
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