York DM 078 Manuel D’Utilisation
246645-YTG-C-0708
Johnson Controls Unitary Products
3
FEATURES
•
Standard Efficiency– All standard efficiency units have
a minimum EER of 9.0. Gas/electric units have elec-
tronic spark ignition and power vented combustion with
steady state efficiencies of 80%.
a minimum EER of 9.0. Gas/electric units have elec-
tronic spark ignition and power vented combustion with
steady state efficiencies of 80%.
•
Service Friendly – The Predator
®
incorporates a num-
ber of enhancements which improve serviceability.
The motor and blower slide out of the unit as a common
assembly. This facilitates greater access to all the indoor
airflow components, thus simplifying maintenance and
adjustment.
assembly. This facilitates greater access to all the indoor
airflow components, thus simplifying maintenance and
adjustment.
Service time is reduced through the use of hinged, tool-
less panels. Such panels provide access to frequently
inspected components and areas, including the control
box, compressors, filters, indoor motor & blower, and the
heating section. The panels are screwed in place at the
factory to prevent access by children or other unauthor-
ized persons. It is recommended that the panels be
secured with screws once service is complete.
less panels. Such panels provide access to frequently
inspected components and areas, including the control
box, compressors, filters, indoor motor & blower, and the
heating section. The panels are screwed in place at the
factory to prevent access by children or other unauthor-
ized persons. It is recommended that the panels be
secured with screws once service is complete.
Service windows have been placed in both condenser
section walls. Rotation of the cover allows easy access
to the condenser coils for cleaning or inspection.
section walls. Rotation of the cover allows easy access
to the condenser coils for cleaning or inspection.
Both the unit control board and ignition control board utilize
flash codes to aid in diagnosis of unit malfunctions. Unique
alarm codes quickly identify the source of the unit alarm.
flash codes to aid in diagnosis of unit malfunctions. Unique
alarm codes quickly identify the source of the unit alarm.
All units use the same standard filter size. This stan-
dardization removes any confusion on which filter sizes
are needed for replacement.
dardization removes any confusion on which filter sizes
are needed for replacement.
The non-corrosive drain pan slides out of the unit to per-
mit easy cleaning. The drain pan is accessed by remov-
ing the drain pan cover plate on the rear of the unit.
Once the plate is removed, the drain pan slides out
through the rear of the unit.
mit easy cleaning. The drain pan is accessed by remov-
ing the drain pan cover plate on the rear of the unit.
Once the plate is removed, the drain pan slides out
through the rear of the unit.
All Predator
®
units have a second model nameplate
located inside the control access door. This is to prevent
deterioration of the nameplate through weathering.
deterioration of the nameplate through weathering.
•
Environmentally Aware – For improved Indoor Air
Quality, foil faced insulation is used exclusively through-
out the units.
Quality, foil faced insulation is used exclusively through-
out the units.
FIGURE 1 -
PREDATOR
®
COMPONENT LOCATION (DM 120 SHOWN)
Roof curbs in eight- and
fourteen-inch heights. Roof
curbs for transitioning from
York Sunline™ footprint to
the ZH Series footprints are
also available (field-installed
accessory)
fourteen-inch heights. Roof
curbs for transitioning from
York Sunline™ footprint to
the ZH Series footprints are
also available (field-installed
accessory)
Base rails w/forklift
slots (three sides)
and lifting holes
slots (three sides)
and lifting holes
Compressor #2
access (high-
efficiency
compressor
w/crankcase
heater)
access (high-
efficiency
compressor
w/crankcase
heater)
Dual stage
cooling for
maximum
comfort
cooling for
maximum
comfort
Second model
nameplate
inside hinged
access panel
nameplate
inside hinged
access panel
Terminal block for
hi-voltage connection
hi-voltage connection
Simplicity™ control board
w/screw connector for T-stat
wiring and network connections
w/screw connector for T-stat
wiring and network connections
Disconnect location
(optional disconnect switch)
(optional disconnect switch)
Filter access
(2” throw-away)
(2” throw-away)
Filter drier
(solid core)
(solid core)
Condenser section
Slide-out motor and
blower assembly for
easy adjustment
and service
blower assembly for
easy adjustment
and service
Belt-drive
blower motor
blower motor
Power ventor motor
20-gauge alumi-
nized steel tubular
heat exchanger for
long life (stainless
steel option)
nized steel tubular
heat exchanger for
long life (stainless
steel option)
Two-stage gas
heating to maintain
warm, comfortable
temperature
heating to maintain
warm, comfortable
temperature
Intelligent control
board for safe and
efficient operation
board for safe and
efficient operation
Slide-out drain pan
with steel 3/4” NPT,
female connection
with steel 3/4” NPT,
female connection
Compressor #1 access
(high-efficiency compressor
w/crankcase heater)
(high-efficiency compressor
w/crankcase heater)
Toolless
door latch
door latch
Side entry power
and control wiring
knockouts
and control wiring
knockouts