J-TG-Series 10 Ultra Hogh Efficiency Single Package AC and Single

349678-JTG-A-1007
TECHNICAL GUIDE
DESCRIPTION
SERIES 10
ULTRA HIGH EFFICIENCY
SINGLE PACKAGE AIR CONDITIONERS AND
SINGLE PACKAGE GAS/ELECTRIC UNITS
J12DJ
12-1/2 NOMINAL TONS
11.35 EER
The Johnson Controls Series 10 J12DJ unit is a convertible single package unit with a common footprint cabinet and common
roof curb for 12-1/2 ton models. All units have two compressors
with independent refrigeration circuits to provide 2 stages of
cooling. The units were designed for light commercial applications and can be easily installed on a roof curb, slab, or frame.
All J12DJ units are self-contained and assembled on rigid full
perimeter base rails allowing for 3-way forklift access and overhead rigging. Every unit is completely charged, wired, piped,
and tested at the factory to provide a quick and easy field installation.
All units are convertible between side and down airflow. Independent economizer designs are used on side and down discharge applications, as well as all tonnage sizes.
J12DJ units are available in the following configurations: cooling only, cooling with electric heat, and cooling with gas heat.
Electric heaters are available as factory-installed options or
field-installed accessories.
Tested in accordance with:
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
349678-JTG-A-1007
TABLE OF CONTENTS
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
FACTORY INSTALLED OPTIONS . . . . . . . . . . . . . . . . . . . 5
FIELD INSTALLED ACCESSORIES . . . . . . . . . . . . . . . . . 6
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
LIST OF TABLES
Tbl. #
Pg. #
1
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2
PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3
J12DJ (12-1/2 TON) CAPACITY RATINGS . . . . . . . . 10
MECHANICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . 26
4
UNIT VOLTAGE LIMITATIONS . . . . . . . . . . . . . . . . . 10
LIST OF FIGURES
1
J12DJ (12 1/2 TON) COOLING CAPACITY . . . 11
2
ELECTRICAL DATA J12DJ (12-1/2 TON) W/O PWRD
CONVENIENCE OUTLET . . . . . . . . . . . . . . . . . . . . . 12
3
ELECTRICAL DATA J12DJ (12-1/2 TON) WITH PWRD
CONVENIENCE OUTLET . . . . . . . . . . . . . . . . . . . . . 12
Fig. #
Pg. #
1
J12DJ COMPONENT LOCATION . . . . . . . . . . . . . . . . 3
2
UNIT 4 POINT LOAD . . . . . . . . . . . . . . . . . . . . . . . . . 16
3
UNIT CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . 16
4
ELECTRIC HEAT MULTIPLIERS . . . . . . . . . . . . . . . 12
4
UNIT WITH 6 POINT LOAD . . . . . . . . . . . . . . . . . . . . 16
5
5
UNIT DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 17
BLOWER PERFORMANCE 12-1/2 TON SIDE
DUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6
ROOF CURB DIMENSIONS . . . . . . . . . . . . . . . . . . . . 18
6
BLOWER PERFORMANCE 12-1/2 TON
DOWNSHOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7
ADDITIONAL STATIC RESISTANCE . . . . . . . . . . . . 15
8
ELECTRIC HEAT MINIMUM SUPPLY AIR CFM . . . . 15
9
INDOOR BLOWER SPECIFICATIONS . . . . . . . . . . . 15
7
TRANSITION ROOF CURBS . . . . . . . . . . . . . . . . . . . 18
8
BOTTOM DUCT OPENINGS . . . . . . . . . . . . . . . . . . . 19
9
SIDEFLOW DUCT DIMENSIONS . . . . . . . . . . . . . . . 19
10 DOWNFLOW ECONOMIZER HOOD DETAIL . . . . . . 20
11 FACTORY INSTALLED DOWNFLOW
ECONOMIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
10 POWER EXHAUST SPECIFICATIONS . . . . . . . . . . . 15
11 4 POINT LOAD WEIGHT . . . . . . . . . . . . . . . . . . . . . . 16
12 FIELD INSTALLED DOWNFLOW ECONOMIZER
W/POWER EXHAUST . . . . . . . . . . . . . . . . . . . . . . . . 21
12 6 POINT LOAD WEIGHT . . . . . . . . . . . . . . . . . . . . . . 16
13 FIELD INSTALLED HORIZONTAL ECONOMIZER
W/POWER EXHAUST . . . . . . . . . . . . . . . . . . . . . . . . 21
14 UNIT CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . 17
13 UNIT WEIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
15 ECONOMIZER USAGE . . . . . . . . . . . . . . . . . . . . . . . 20
14 SLAB ECONOMIZER DOWNFLOW W/POWER
EXHAUST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
15 SLAB ECONOMIZER END RETURN W/POWER
EXHAUST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
16 COOLING UNIT WITH GAS HEAT WIRING 230 V.
DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
17 COOLING UNIT W/WO ELECTRIC HEAT WIRING
DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
18 COOLING UNIT WITH GAS HEAT WIRING 460, 575
& 50 HZ DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2
Johnson Controls Unitary Products
349678-JTG-A-1007
Second model
nameplate inside
hinged access panel
Unit Control board
w/screw connectors
for T-stat wiring and
Network Connection
Disconnect
location (optional
disconnect switch)
Filter access
(2" throw-away)
Filter drier (solid core)
Condenser Section
Dual stage cooling
for maximum
comfort
Belt-drive blower
motor
Slide out motor
and blower
assembly for easy
adjustment and
service
Compressor #2
access
(high-efficiency
compressor w/
crankcase heater)
Power ventor
motor
20-gauge
aluminized steel
tubular heat
exchanger for
long life
(stainless steel
option)
Base rails w/
forklift slots
( three sides)
and lifting
holes
Slide-out drain pan
wi th steel ¾" NPT
female connection
Roof curbs in eight-and
fourteen-inch heights.
Toolless door
latch
Side entry power
and control wiring
knockouts
FIGURE 1 -
Compressor #1 access
(high-efficiency
compressor w/crankcase
heater)
Two-stage gas heating to
maintain warm,
comfortable temperature
Intelligent control
board for safe and
efficient operation
J12DJ COMPONENT LOCATION
FEATURES
•
•
High Efficiency – High efficiency units are rated at 11.35
EER. Gas/electric units have electronic spark ignition and
power vented combustion with steady state efficiencies of
80%. These efficiencies meet or exceed all legislated minimum levels and provide low operating costs.
Service Friendly – The J12DJ incorporates a number 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.
Service time is reduced through the use of hinged, toolless
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 unauthorized
persons. It is recommended that the panels be secured
with screws once service is complete.
Johnson Controls Unitary Products
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.
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.
All units use the same standard filter size. This standardization removes any confusion on which filter sizes are
needed for replacement.
The non-corrosive drain pan slides out of the unit to permit easy cleaning. The drain pan is accessed by removing 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 J12DJ units have a second model nameplate located
inside the control access door. This is to prevent deterioration of the nameplate through weathering.
3
349678-JTG-A-1007
•
Environmentally Aware – For improved Indoor Air
Quality, foil faced insulation is used exclusively throughout the units.
•
Balanced Heating – The J12DJ offers “Ultimate Heating
Comfort” with a balance between 1st and 2nd stage gas
heating. The first stage of a gas heat unit provides 60%
of the heating capacity. Balanced heating allows the unit
to better maintain desired temperatures.
•
Convertible Airflow Design – The side duct openings
are covered when they leave the factory. If a side supply/
return is desired, the installer simply removes the two
side duct covers from the outside of the unit and installs
them over the down shot openings. No panel cutting is
required. Convertible airflow design allows maximum
field flexibility and minimum inventory.
•
System Protection – Suction line freezestats are supplied on all units to protect against loss of charge and coil
frosting when the economizer operates at low outdoor air
temperatures while the compressors are running. Every
unit has solid-core liquid line filter-driers and high and
low-pressure switches. Internal compressor protection is
standard on all compressors. Crankcase heaters are
standard on reciprocating compressors. Scroll compressors do not require crankcase heaters. Phase monitors
are standard on all units.
•
•
•
•
•
Low Ambient - An integrated low-ambient control
allows all units to operate in the cooling mode down
to 0°F outdoor ambient without additional assistance.
Optionally, the control board can be programmed to
lockout the compressors when the outdoor air temperature is low or when free cooling is available.
Anti-Short Cycle Protection - To aid compressor
life, an anti-short cycle delay is incorporated into the
standard controls. Compressor reliability is further
ensured by programmable minimum run times. For
testing, the anti-short cycle delay can be temporarily
overridden with the push of a button.
On Board Diagnostics - Each alarm will energize a
trouble light on the thermostat, if so equipped, and
flash an alarm code on the control board LED. Each
high and low-pressure switch alarm as well as each
freezestat alarm has its own flash code. The control
board saves the five most recent alarms in memory,
and these alarms can be reviewed at any time.
Alarms and programmed values are retained
through the loss of power.
•
Reliable – From the beginning – All units undergo computer automated testing before they leave the factory.
Units are tested for refrigerant charge and pressure, unit
amperage, and 100% functionality. For the long term –
All J12DJ units are painted with a long lasting, powder
paint that stands up over the life of the unit. The paint
used has been proven by a 750 hour salt spray test.
•
Flexible Placement – All models and configurations
share the same cabinet/footprint and thus the same roof
curb. You have the flexibility to set one curb and choose
the correct tonnage size and heating option after the
internal loads have been determined.
To further simplify planning and installation, J12DJ cabinets
are designed to fit your roof. With the optional roof curb, the
unit ductwork is designed to fit around 24” on-center joists
or between 48” on-center joists.
Advanced Controls - Unit control boards have standardized a number of features previously available only
as options or by utilizing additional controls.
•
4
•
The drain pan can be rotated to drain to either the front
or the rear of the unit. Additionally, the drain pan can be
fitted to drain through the roof curb. As it is sometimes
difficult to have a level installation, the drain pan features
a generous slope to ensure proper drainage.
•
Full Perimeter Base Rails – The permanently attached
base rails provide a solid foundation for the entire unit
and protect the unit during shipment. The rails offer
forklift access from 3 sides, and rigging holes are
available so that an overhead crane can be used to
place the units on a roof.
•
Easy Installation – Gas and electric utility knockouts are
supplied in the unit underside as well as the side of the
unit. A clearly identified location is provided to mount a
field supplied electrical disconnect switch. Utility connections can be made quickly and with a minimum amount
of field labor.
Fan Delays - Fan on and fan off delays are fully programmable. Furthermore, the heating and cooling
fan delay times are independent of one another. All
units are programmed with default values based
upon their configuration of cooling and heat.
•
Safety Monitoring - The control board monitors the
high and low-pressure switches, the freezestats, the
gas valve, if applicable, and the temperature limit
switch on gas and electric heat units. The unit control board will alarm on ignition failures, compressor
lockouts and repeated limit switch trips.
Wide Range of Indoor Airflows – All indoor fan motors
are belt-drive type providing maximum flexibility to handle most airflow requirements. For high static applications, factory installed alternate indoor fan motors are
available. With the optional indoor fan motor, all units can
supply nominal airflow at a minimum of 1.5” ESP.
•
Warranty - All models include a 1-year limited warranty
on the complete unit. Compressors and electric heater
elements each carry a 5-year warranty. Aluminized steel
and stainless steel tubular heat exchangers carry a 10year warranty.
Nuisance Trip Protection and Strikes - To prevent
nuisance trouble calls, the control board uses a
“three times, you’re out” philosophy. The high and
low-pressure switches and the freezestats must trip
three times within two hours before the unit control
board will lock out the associated compressor.
All units are shipped with 2” throw-away filters installed.
Johnson Controls Unitary Products
349678-JTG-A-1007
FACTORY INSTALLED OPTIONS
CO2 input for demand ventilation. With single enthalpy
input, the economizer control monitors outdoor air. The
dual enthalpy kit provides a second input used to monitor the return air. With a dual input kit installed, the
economizer control compares the values of the two
enthalpy or temperature inputs and positions the
dampers to provide the maximum efficiency possible.
Johnson Controls offers several equipment options factory
installed, for the Series 10 J12DJ line.
•
Optional Factory Installed Economizers - J12DJ units
offer a variety of optional factory installed economizers
with low leak dampers. The outdoor air enthalpy sensor
enables economizer operation if the outdoor enthalpy is
less than the setpoint of the economizer logic module.
See Table 19 to determine the correct economizer for
your application.
•
•
•
•
Downflow Economizer - (With barometric relief) The economizer is provided with a single enthalpy
input. The economizer is 2% low leakage type, and is
shipped installed and wired. The installer needs only
to assemble and mount the outdoor air hood (Provided). The economizer has spring return, fully modulating damper actuators and is capable of introducing
up to 100% outdoor air. As the outdoor air intake
dampers open, the return air dampers close. The
changeover from mechanical refrigeration to economizer operation is regulated by the standard single
enthalpy input. There is an optional input dual dry
bulb available. To meet regulated air standards, the
economizer control accepts an optional CO2 input for
demand ventilation. With single enthalpy input, the
economizer control monitors outdoor air. The dual
enthalpy kit provides a second input used to monitor
the return air. With a dual input kit installed, the economizer control compares the values of the two
enthalpy or temperature inputs and positions the
dampers to provide the maximum efficiency possible.
Horizontal Economizer - (Without barometric
relief) - All features of the downflow economizer
exist except you must order the duct mount barometric relief separately. You must order a 1EH0408
if you are installing a power exhaust. You can
order a 1RD0411 Barometric Relief for horizontal
flow economizers only.
BAS Ready Economizer -(With barometric relief)
- The economizer is provided with an actuator that
requires a 0-10V DC input from an external source
(i.e., field installed building automation system controller). Power exhaust options are available. The
economizer is 2% low leakage type with spring
return and fully modulating dampers capable of
introducing up to 100% outside air. Also include 2”
pleated filters.
Slab Economizer for Energy Recovery Ventilators(With barometric relief and Fresh Air Hood) - The
economizer is provided with a single enthalpy input.
The economizer is 2% low leakage type, and is
shipped installed and wired. The economizer has
spring return, fully modulating damper actuators and is
capable of introducing up to 100% outdoor air. As the
outdoor air intake dampers open, the return air dampers close. The changeover from mechanical refrigeration to economizer operation is regulated by the
standard single enthalpy input. There is an optional
input dual dry bulb available. To meet regulated air
standards, the economizer control accepts an optional
Johnson Controls Unitary Products
•
Power Exhaust (Downflow only) - This accessory
installs in the unit with a down flow economizer.
•
Motorized Outdoor Air Damper - The motorized outdoor air damper includes a slide-in/plug-in damper
assembly with an outdoor air hood and filters. The outdoor air dampers open to the preset position when the
indoor fan motor is energized. The damper has a range
of 0% to 100% outdoor air entry. Factory installed option
or field installed accessory.
•
Alternate Indoor Blower Motor - For applications with
high static restrictions, units are offered with optional
indoor motors that provide higher static output and/or
higher airflow, depending upon the installer’s needs.
•
Aluminized Steel Gas Heat Exchanger - For applications in non-corrosive environments.
•
Stainless Steel Gas Heat Exchanger - For applications
in corrosive environments, this option provides a full
stainless steel heat exchanger assembly.
•
Stainless Steel Drain Pan - An optional rust-proof stainless steel drain pan is available to provide years of trouble-free operation in corrosive environments.
•
Electric Heaters - The electric heaters range from 18kW
to 54kW and are available in all the voltage options of the
base units. All heaters are dual staged. All heaters are
intended for single point power supply.
•
Disconnect Switch - For gas heat units and cooling
units with electric heat, an HACR breaker sized to the
unit is provided. For cooling only units, a switch sized to
the largest electric heat available for the particular unit is
provided. Factory installed option only.
•
Convenience Outlet - (Non-Powered/Powered) - This
option locates a 120V single-phase GFCI outlet with
cover, on the corner of the unit housing adjacent to the
compressors. The “Non-powered” option requires the
installer to provide the 120V single-phase power source
and wiring. The “Powered” option is powered by a stepdown transformer in the unit. Factory installed option only.
•
Smoke Detectors - The smoke detectors stop operation
of the unit by interrupting power to the control board if
smoke is detected within the air compartment. Available
for both the supply and/or return air.
Factory installed smoke detectors in the return air,
may be subjected to freezing temperatures during
"off" times due to out side air infiltration. These
smoke detectors have an operational limit of 32 °F
to 131°F. Smoke detectors installed in areas that
could be out side those limitations will have to be
moved to prevent having false alarms.
5
349678-JTG-A-1007
•
Phase Monitors - Designed to prevent unit damage.
The phase monitor will shut the unit down in an out-of
phase condition. (Standard on units with Scroll Compressors.)
•
Coil Guard - Customers can purchase a coil guard kit to
protect the condenser coil from damage. Additionally,
this kit stops animals and foreign objects from entering
the space between the inner condenser coil and the
main cabinet. This is not a hail guard kit.
•
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.
•
Technicoat Condenser Coils - The condenser coils are
coated with a phenolic coating for protection against corrosion due to harsh environments.
•
Technicoat Evaporator Coil - The evaporator coils are
coated with a phenolic coating for protection against corrosion due to harsh environments.
power exhaust. You can order a 1RD0411 Barometric
Relief for horizontal flow economizer.
•
You can order 1EH0409 Barometric Relief/FA Hood
for field installations without an ERV.
Control Options
• Johnson Light Commercial System (LCCS) - Provides
rooftop system integration for LCCS single zone,
change-over bypass and VAV systems.
• Johnson UNT 1126 Rooftop Controller - N2 protocol
with air proving and dirty filter sensors. Hardware
contains generic application logic; field engineering
and/or modification may be required.
FIELD INSTALLED ACCESSORIES
•
Dual Enthalpy Control, Accessory - This kit contains
the required components to convert a single enthalpy
economizer to dual enthalpy.
•
Barometric Relief Damper - Zero to 100% capacity
barometric relief dampers for use with horizontal flow, or
field installed slab economizers.
•
Power Exhaust - This accessory installs in the unit with
a down flow economizer. Power exhaust plugs into the
connector in the unit bulkhead. You must purchase
1EH0408 barometric relief when applying to a horizontal flow application.
•
Manual Outdoor Air Damper - Like the motorized outdoor air damper, each manual outdoor air damper
includes a slide-in damper assembly with an outdoor air
hood and filters. Customers have a choice of dampers
with ranges of 0% to 100% or 0% to 35% outdoor air entry.
•
Motorized Outdoor Air Damper - The motorized outdoor air damper includes a slide-in/plug-in damper
assembly with an outdoor air hood and filters. The outdoor air dampers open to the preset position when the
indoor fan motor is energized. The damper has a range
of 0% to 100% outdoor air entry. Factory installed option
or field installed accessory.
•
Smoke Detectors - The smoke detectors stop operation
of the unit by interrupting power to the control board if
smoke is detected within the air compartment.
•
CO2 Sensor - Senses CO2 levels and automatically
overrides the economizer when levels rise above the
preset limits.
•
Dirty Filter Switch - This kit includes a differential pressure switch that energizes the fault light on the unit ther-
Johnson Controls offers several equipment accessories for
field installation, for the J12DJ line.
•
•
6
Downflow Economizer - (With barometric relief) - The
economizer is provided with a single enthalpy input. The
economizer is 2% low leakage type. The economizer has
spring return, fully modulating damper actuators and is
capable of introducing up to 100% outdoor air. As the
outdoor air intake dampers open, the return air dampers
close. The changeover from mechanical refrigeration to
economizer operation is regulated by the standard single
enthalpy input. There is an optional input dual dry bulb
available. To meet regulated air standards, the economizer control accepts an optional CO2 input for demand
ventilation. With single enthalpy input, the economizer
control monitors outdoor air. The dual enthalpy kit provides a second input used to monitor the return air. With
a dual input kit installed, the economizer control compares the values of the two enthalpy or temperature
inputs and positions the dampers to provide the maximum efficiency possible
Horizontal Economizer - (Without barometric relief) All features of the downflow economizer exist except you
must order the duct mount barometric relief separately.
You must order a 1EH0408 if you are installing a
Slab Economizer for Energy Recovery Ventilator(Without barometric relief or Fresh Air Hood) - The
economizer is provided with a single enthalpy input. The
economizer is 2% low leakage type. The economizer has
spring return, fully modulating damper actuators and is
capable of introducing up to 100% outdoor air. As the
outdoor air intake dampers open, the return air dampers
close. The changeover from mechanical refrigeration to
economizer operation is regulated by the standard single
enthalpy input. There is an optional input dual dry bulb
available. To meet regulated air standards, the economizer control accepts an optional CO2 input for demand
ventilation. With single enthalpy input, the economizer
control monitors outdoor air. The dual enthalpy kit provides a second input used to monitor the return air. With
a dual input kit installed, the economizer control compares the values of the two enthalpy or temperature
inputs and positions the dampers to provide the maximum efficiency possible.
Johnson Controls Unitary Products
349678-JTG-A-1007
mostat, indicating that there is an abnormally high
pressure drop across the filters.
•
Coil Guard - Field installed decorative wire coil guard.
•
Hail Guard - This kit includes a sloped hood which
installs over the outside condenser coil and prevents
damage to the coil fins from hail strikes. Field installed
accessory only.
•
Flue Exhaust Extension Kit - In locations with wind or
weather conditions which may interfere with proper
exhausting of furnace combustion products, this kit can
be installed to prevent the flue exhaust from entering
nearby fresh air intakes.
•
-60°F Gas Heat Kit - For installations which require gas
heat units to perform in low ambient temperatures, a gas
section heating kit is available. This kit provides electric
heat in the gas heat controls section to ensure the gas
valve and controls will continue to function properly at
extremely low temperatures.
•
•
•
Gas Heat High Altitude Kit - This kit converts a gas
heat unit to operate at high altitudes, 2,000 to 6,000 feet.
Conversion kits are available for natural gas and propane.
Gas Heat Propane Conversion Kit - This kit converts a
gas-fired heater from natural gas to propane. It contains
the main burner orifices and gas valve replacement
springs.
Gas Piping Kit - Contains pipe nipples, fittings and gas
cock required for gas supply connection with external
shut off.
Johnson Controls Unitary Products
•
Electric Heaters - The electric heaters range from 18
kW to 54kW and are available in all the voltage options
of the base units. All heaters are dual staged. Cooling
units include an adapter panel for easy installation of the
electric heaters. Necessary hardware and connectors
are included with the heaters. All heaters are intended
for single point power supply.
•
Low Limit / Compressor Lockout Kit
1.
Compressor Lockout (CLO): To prevent mechanical (compressorized) operation of the unit during
cold outdoor conditions where there is a risk of
returning liquid refrigerant back to the compressors.
2.
Low Limit Control (LLC): To prevent the supply air
from dropping below a specified setpoint by utilizing
the units first stage heating means when there is a
demand for cooling during cold outside conditions.
•
Metal Frame Filter Kit - Metal frame with polyester filter
medium.
•
Permanent Filters - Permanent filters are available.
•
Roof Curbs - The roof curbs have insulated decks and
are shipped disassembled The roof curbs are available
in 8” and 14” heights. For applications with security concerns, burglar bars are available for the duct openings of
the roof curbs.
•
Burglar Bars - Mount in the supply and return openings
to prevent entry into the duct work.
•
Thermostat - The units are designed to operate with 24volt electronic and electro-mechanical thermostats. All
units (with or without an economizer) operate with twostage heat/two-stage cool or two-stage cooling only thermostats, depending upon unit configuration.
7
349678-JTG-A-1007
TABLE 1: ACCESSORIES
Part Number
1RC0470
1RC0471
1RC0472
1BD0408
2TP04521825
2TP04522425
2TP04523625
2TP04525425
2TP04521846
2TP04522446
2TP04523646
2TP04525446
2TP04521858
2TP04522458
2TP04523658
2TP04525458
1FA0411
1FA0412
2MD04702724
2MD04703324
2EE04705024
2EE04705124
2EE04705224
2PE04703225
2PE04703246
2PE04703258
2EC04700924
1EH0407
1RD0411
1EH0408
1EH0409
2AQ04700424
2AQ04700324
2SD04700424
2MK04700624
1CG0424
1CG0425
1HG0411
1GP0404
1NP0441
1HA0442
1HA0443
1FE0411
2BC04700106
2BC04700151
2BC04700154
1FL0402
2DF0401
1FF0410
8
Description
Weight
Roof Curb, 8" Height
Roof Curb, 14" Height
Roof Curb, Transition (7.5 T through 12.5 T)
Burglar Bars, Downflow
Electric Heat 18kW 230V
Electric Heat 24kW 230V
Electric Heat 36kW 230V
Electric Heat 54kW 230V
Electric Heat 18kW 460V
Electric Heat 24kW 460V
Electric Heat 36kW 460V
Electric Heat 54kW 460V
Electric Heat 18kW 575V
Electric Heat 24kW 575V
Electric Heat 36kW 575V
Electric Heat 54kW 575V
Manual Outside Air Damper 0-35%, Downflow (Incl. Hood, Damper & Filters, No Barometric Relief)
Manual Outside Air Damper 0-100%, Downflow (Incl. Hood, Damper & Filters, No Barometric Relief)
Motorized Damper, Downflow (Incl. Hood, Damper & Filter, no Barometric Relief)
Motorized Damper, Horizontal (Incl. Hood, Damper & Filter, no Barometric Relief)
Economizer, Downflow (Incl. Barometric Relief & All Hoods)
Economizer, Horizontal (Incl. Dampers & Hoods, no Barometric Relief)
Economizer, Slab, Downflow (Incl. Dampers only no Hoods or Barometric Relief)
Power Exhaust, Downflow, 230V (For Units with Economizer only)
Power Exhaust, Downflow, 460V (For Units with Economizer only)
Power Exhaust, Downflow, 580V (For Units with Economizer only)
Dual Enthalpy Control (Use with Single Enthalpy Economizer)
Hood Kit, Downflow Economizer (Included with all Downflow Economizers)
Barometric Relief Kit, Ductmount for Horizontal Application (Incl. Damper & Hood)
Barometric Relief Kit, Ductmount for Horizontal Application w/Power Exhaust (Incl. Damper & Hood)
Barometric Relief / Hood Kit, for Field Installed Slab Econ. w/o ERV (Incl. Barometric Relief & FA Hood)
CO2 Detector Unit Mount
CO2 Detector Space Mount
Smoke Detector, Supply or Return (Return Not Available with Horizontal Economizer)
Low Limit / Compressor Lockout Kit
Coil Guard (Electric / Electric & HP models)
Coil Guard (Gas / Electric models)
Hail Guard Kit
Gas Piping Kit
Propane Conversion Kit
High Altitude Kit for Natural Gas
High Altitude Kit for Propane
Flue Exhaust Extension Kit
Gas Heat Kit, -60 deg F, 230V
Gas Heat Kit, -60 deg F, 460V
Gas Heat Kit, -60 deg F, 575V
Permanent Filter Kit
Dirty Filter Switch
Filter Frame Kit, Metal
124 lbs.
97 lbs.
-
25 lbs.
-
Johnson Controls Unitary Products
349678-JTG-A-1007
NOMENCLATURE
12.5 Ton Series 10 Model Number Nomenclature
J12 D J N15 A 2 A AA 4 0 1 2 4 A
Nominal Cooling Capacity
Product Style
J12 = 12.5 Ton
A = Style A
B = Style B
C = Style C
Product Category
D = A/C, Single Pkg., R-22
Configuration Options (not required for all units)
These four digits will not be assigned until a quote is requested, or an order placed.
SS Drain Pan
Johnson UNT 1126 Controller (N2 protocol), DFS, APS
Product Identifier
Johnson Light Commercial Controls System (LCCS) Rtu Controller
J = 12.5 Ton 11.3 EER A/C
2" Pleated filters
BAS Ready Economizer (2-10 V.D.C. Actuator without a controller)
Shipping Bag
Heat Type and Nominal Heat Capacity
For valid combinations of the above; see the equipment price pages or
the Unitary Sales Tool program; all combinations are not available
C00 = Cooling Only. No heat installed
Gas Heat Options
Product Generation
N15 = 150 MBH Output Aluminized Steel
N20 = 200 MBH Output Aluminized Steel
S15 = 150 MBH Output Stainless Steel
S20 = 200 MBH Output Stainless Steel
4 = Fourth Generation
Additional Options
Electric Heat Options
AA = None
AB = Phase Monitor
AC = Coil Guard
AD = Dirty Filter Switch
AE = Phase Monitor & Coil Guard
AF = Phase Monitor & Dirty Filter Switch
AG = Coil Guard & Dirty Filter Switch
AH = Phase Monitor, Coil Guard & Dirty Filter Switch
E18 = 18 KW
E24 = 24 KW
E36 = 36 KW
E54 = 54 KW
Airflow
A = Std. Motor
B = Std. Motor/Econo./Barometric Relief (Downflow
Only)
C = Std. Motor/Econo./Power Exhaust (Downflow Only)
D = Std. Motor/Motorized Damper (Downflow Only)
E = Std. Motor/Horizontal Economizer (No Baro.)
F = Std. Motor/Slab Econo./Power Exhaust
(Downflow Only)
G = Std. Motor/Slab Econo./Barometric Relief
(Downflow Only)
N = Hi Static Mtr.
P = Hi Static Mtr./Econo./Barometric Relief
(Downflow Only)
Q = Hi Static Mtr./Econo./Power Exhaust
(Downflow Only)
R = Hi Static Mtr./Motorized Damper (Downflow Only)
S = Hi Static Mtr./Horizontal Economizer (No Baro.)
T = Hi Static Mtr./Slab Econo./Power Exhaust
(Downflow Only)
U = Hi Static Mtr./Slab Econo./Barometric Relief
(Downflow only)
Voltage
2 = 208/230-3-60
4 = 460-3-60
5 = 575-3-60
RC = Coil Guard, Shipping Bag & American Flag
TA = Technicoat Condenser Coil
TJ = Technicoat Evaporator Coil
TS = Technicoat Evaporator & Condenser Coils
ZZ = If desired option combination is not listed above, ZZ will be assigned and configuration options will be
located in digits 15-18.
Installation Options
A = No Options Installed
B = Option 1
C = Option 2
D = Options 1 & 2
E = Option 3
F = Option 4
G = Options 1 & 3
H = Options 1 & 4
J = Options 1, 2 & 3
K = Options 1, 2, & 4
L = Options 1,3 & 4
M = Options 1, 2, 3, & 4
N = Options 2 & 3
P = Options 2 & 4
Q = Options 2, 3, & 4
R = Options 3 & 4
S = Option 5
T = Options 1 & 5
U = Options 1, 3, & 5
V = Options 1, 4, & 5
W = Options 1, 3, 4, & 5
X = Options 3 & 5
Y = Options 4 & 5
Z = Options 3, 4 & 5
Options
1 = Disconnect
2 = Non-Pwr'd Conv. Outlet
3 = Smoke Detector S.A.
4 = Smoke Detector R.A.
5 = Pwr'd Conv. Outlet
Johnson Controls Unitary Products
9
349678-JTG-A-1007
TABLE 2: PHYSICAL DATA
Model
J12DJ
(12-1/2)
Component
Evaporator
Blower
Blower, Centrifugal (Dia. X Wd. in.)
15 x 15
Motor, Standard (HP)
3
Evaporator
Coil
Condenser
Fan
(4 per Unit)
Motor, Optional (HP)
5
Rows
4
Fins per Inch
15
Height (in.)
40
Face Area (ft.2 each)
13.2
Propeller Dia. (in., each)
24
Motor (HP, each)
1/3
CFM, Nominal (each)
3500
Rows (each)
2
Condenser
Coil
(2 per unit)
Refrigerant
Charge
Fins per Inch
15
Height (in., each)
36
Face Area (ft.2 each)
11.88
System 1 (lb./oz.)
21/0
System 2 (lb./oz.)
20/8
Quantity
2
Type
Scroll
Size (Wd. x Ht. x Thickness in.)
25x20x2
Number Per Unit
4
Compressors
Air Filters
TABLE 3: J12DJ (12-1/2 TON) CAPACITY RATINGS
Size
(Tons)
Cooling Capacity
ARI Ratings1
Model
CFM
MBH EER IPLV
Nominal
Gas
Gas Heat Capacity
Sound
Electric
Line
Rating
Heat
Size
3
Input Output
Seasonal
Temp.
(dB)2 Capacity
(in. OD)
(MBH) (MBH) Efficiency (%) Rise (°F)
(kW)
Cooling
Only
J12
(12-1/2)
-
-
-
-
-
-
18, 24, 36
54
-
-
-
-
-
Gas Heat
-
180
144
80
10-40
3/4
Gas Heat
-
240
192
80
25-55
3/4
Electric
Heat
150
11.35
12.3
3750
86
1 Rated at 95°F ambient 80°F dry bulb and 67°F wet bulb.
2 Rated in accordance with ARI 270 standard.
3 See Table 8.
TABLE 4: UNIT VOLTAGE LIMITATIONS
10
POWER RATING
MIN.
MAX.
208/230-3-60
187
252
460-3-60
432
504
575-3-60
540
630
Johnson Controls Unitary Products
349678-JTG-A-1007
TABLE 5: J12DJ (12 1/2 TON) COOLING CAPACITY
Air On
Evap. Coil
CFM
3750
4375
5000
5625
6250
3750
4375
5000
5625
6250
3750
4375
5000
5625
6250
WB
(°F)
Temperature of Air on Condenser Coil 85°F
Tot.
1
Cap.
(MBH)
72
67
62
57
72
67
62
57
72
67
62
57
72
67
62
57
72
67
62
57
173
160
148
147
177
163
151
150
180
167
154
154
184
170
157
157
188
173
161
160
72
67
62
57
72
67
62
57
72
67
62
57
72
67
62
57
72
67
62
57
158
145
134
134
160
147
136
136
162
149
138
138
165
152
140
141
168
154
143
143
72
67
62
57
72
67
62
57
72
67
62
57
72
67
62
57
72
67
62
57
137
127
116
121
139
129
118
123
141
131
120
125
144
133
122
127
146
136
124
129
Temperature of Air on Condenser Coil 95°F
Sensible Capacity (MBH)1
Return Dry Bulb (°F)
Tot.
2
Tot.
1
71
68
Cap.
(MBH)
10.9
102
92
81
70
60
49
10.6
127 116 105
95
84
73
10.5
148 141 131 120 109
99
10.5
147 144 133 123 112 101
10.9
112 100
87
74
62
49
10.7
138 126 113 101
88
75
10.6
151 148 141 128 115 103
10.5
150 149 143 131 118 106
11.0
122 108
93
79
64
49
10.7
150 136 121 107
92
77
10.6
154 154 150 136 121 107
10.6
154 154 154 139 124 110
11.0
133 116 100
83
66
50
10.8
162 146 129 113
96
80
10.7
157 157 155 139 122 106
10.6
157 157 157 140 123 107
11.1
143 125 106
87
69
50
10.8
173 156 138 119 101
82
10.7
161 161 161 142 123 105
10.6
160 160 160 141 122 104
Temperature of Air on Condenser Coil 105°F
13.0
99
88
77
67
56
45
12.9
120 110
99
88
78
67
12.7
134 129 119 108
97
87
12.8
134 130 119 109
98
87
13.1
109
96
83
71
58
45
13.0
132 119 107
94
81
69
12.8
136 134 128 115 103
90
12.9
136 134 129 116 103
91
13.2
119 104
89
75
60
46
13.0
144 129 114 100
85
71
12.8
138 138 137 123 108
93
12.9
138 138 138 124 109
94
13.2
129 112
96
79
63
46
13.1
149 139 123 106
90
73
12.9
140 140 140 123 107
90
13.0
141 141 141 124 107
91
13.3
140 121 102
84
65
47
13.1
154 150 131 113
94
75
12.9
143 143 143 124 106
87
13.0
143 143 143 124 106
87
Temperature of Air on Condenser Coil 125°F
15.6
94
83
73
62
51
41
15.5
112 102
91
80
70
59
15.3
116 113 102
91
81
70
15.5
121 116 105
95
84
73
15.7
105
92
79
67
54
41
15.5
125 112
99
87
74
61
15.3
118 116 111
99
86
73
15.5
123 120 115 102
90
77
15.7
115 100
86
71
57
42
15.5
131 122 108
93
78
64
15.3
120 120 120 106
91
77
15.6
125 125 125 110
95
81
15.7
125 109
92
75
59
42
15.5
133 131 115
99
82
65
15.4
122 122 122 106
89
72
15.6
127 127 127 110
94
77
15.7
135 117
98
80
61
42
15.6
136 136 123 104
86
67
15.4
124 124 124 105
87
68
15.6
129 129 129 110
92
73
38
63
88
91
37
63
90
93
35
63
92
95
33
63
89
90
32
63
86
85
168
154
143
141
170
156
145
143
173
158
147
145
176
161
150
147
179
164
152
150
34
56
76
77
33
56
77
78
31
56
79
80
29
56
74
74
28
57
68
68
148
136
125
128
150
138
127
130
152
140
129
131
155
143
131
134
157
145
133
136
Input
(kW)
Johnson Controls Unitary Products
86
83
80
77
74
30
48
59
63
29
49
61
64
28
49
62
66
26
49
56
60
24
48
49
54
Sensible Capacity (MBH)1
Return Dry Bulb (°F)
Tot.
2
Input
(kW)
71
68
11.8
101
90
79
69
58
47
11.6
124 114 103
92
81
71
11.4
143 138 127 116 106
95
11.5
141 137 126 116 105
94
11.8
111
98
85
73
60
47
11.7
136 123 110
98
85
72
11.5
145 142 136 124 111
98
11.5
143 141 136 123 110
98
11.9
120 106
91
76
62
47
11.8
147 132 118 103
89
74
11.6
147 147 146 131 116 102
11.6
145 145 145 130 116 101
12.0
131 114
98
81
65
48
11.8
155 143 127 110
93
77
11.7
150 150 149 132 116
99
11.7
147 147 147 131 114
98
12.1
142 123 105
86
67
49
11.9
164 154 135 117
98
79
11.7
152 152 152 134 115
96
11.8
150 150 150 131 113
94
Temperature of Air on Condenser Coil 115°F
14.3
96
86
75
64
54
43
14.2
116 106
95
84
74
63
14.0
125 121 110 100
89
78
14.2
128 123 112 102
91
80
14.4
107
94
81
69
56
43
14.2
128 116 103
90
78
65
14.1
127 125 120 107
94
82
14.2
130 127 122 109
97
84
14.4
117 102
88
73
58
44
14.3
140 126 111
96
82
67
14.1
129 129 129 114 100
85
14.3
131 131 131 117 102
88
14.5
127 111
94
77
61
44
14.3
143 135 119 102
86
69
14.1
131 131 131 114
98
81
14.3
134 134 134 117 100
84
14.5
138 119 100
82
63
44
14.3
145 145 127 108
90
71
14.2
133 133 133 115
96
77
14.3
136 136 136 117
99
80
86
83
80
77
74
37
60
84
84
35
60
86
85
33
60
87
87
31
60
83
81
30
61
78
75
32
52
67
70
31
52
69
71
29
53
70
73
28
53
65
67
26
53
59
61
1 These capacities are gross ratings. For net
capacity, deduct air blower motor, MBh = 3.415
x kW. Refer to the appropriate Blower Performance Table for the kW of the supply air
blower motor.
2 These ratings include condenser fan motors
(total 1 kW) and the compressor motors but
not the supply air blower motor.
11
349678-JTG-A-1007
TABLE 6: ELECTRICAL DATA J12DJ (12-1/2 TON) W/O PWRD CONVENIENCE OUTLET
Supply
Pwr
Pwr
Blower
Exh Conv
Electric Heater Actual Heater
Voltage
Motor FLA Motor Outlet
KW
Amps
Model No.
RLA
LRA
FLA
3
5
FLA
FLA
ea.
ea.
ea.
HP
HP
None
--2TP04521825
13.5
37.5
10.9 16.1
5.5
0.0
20.0 146.0
1.5
208
2TP04522425
18.0
50.0
2TP04523625
25.5
70.8
2TP04525425
40.6
112.7
None
--2TP04521825
18.0
43.3
20.0 146.0
1.5
10.9 16.1
5.5
0.0
230
2TP04522425
24.0
57.7
2TP04523625
34.0
81.8
2TP04525425
54.0
129.9
None
--2TP04521846
18
22.6
8.4
73.0
0.8
5.3
8.1
2.2
0.0
460
2TP04522446
24
30.1
2TP04523646
34
42.7
2TP04525446
54
67.8
None
--2TP04521858
18
18.1
6.7
60.0
0.6
4.1
6.0
1.8
0.0
575
2TP04522458
24
24.1
2TP04523658
34
34.1
2TP04525458
54
54.2
Maximum HACR breaker of the same AMP size is applicable.
1
OD Fan
Compressors
Motors
Min. Circuit
Ampacity
(Amps)
3
HP
61.9
61.9
76.1
102.1
154.5
61.9
67.8
85.8
115.9
143.5
27.4
33.7
42.7
57.7
71.6
21.6
26.8
34
46
57.1
5
HP
67.1
67.1
82.6
108.6
161.0
67.1
74.3
92.3
122.4
150.0
30.2
37.2
46.2
61.2
75.1
23.5
29.2
36.4
48.4
59.5
MCA
w/Power
Exhaust
(Amps)
3
5
HP
HP
67.4 72.6
67.4 73.8
83.0 89.5
109.0 115.5
161.4 167.9
67.4 72.6
74.6 81.1
92.7 99.2
122.7 129.2
150.4 156.9
29.6 32.4
36.4 39.9
45.5
49
60.5
64
74.3 77.8
23.4 25.3
29
31.4
36.2 38.6
48.3 50.6
59.3 61.7
Max
Max Fuse1 Size
Fuse1
w/Power
Size
Exhaust
(Amps)
(Amps)
3
5
3
5
HP HP
HP
HP
80 80
80
90
80 80
80
90
80 90
90
90
110 110
110
125
175 175
175
175
80 80
80
90
80 80
80
90
90 100
100
100
125 125
125
150
175 175
175
175
35 35
35
40
35 40
40
40
45 50
50
50
60 70
70
70
80 90
80
90
25 30
30
30
30 30
30
35
35 40
40
40
50 50
50
60
70 70
70
70
TABLE 7: ELECTRICAL DATA J12DJ (12-1/2 TON) WITH PWRD CONVENIENCE OUTLET
Supply
Pwr
Pwr
Blower
Exh Conv
Electric Heater Actual Heater
Voltage
Motor FLA Motor Outlet
KW
Model No.
Amps
RLA
LRA
FLA
3
5
FLA
FLA
ea.
ea.
ea.
HP
HP
None
--2TP04521825
13.5
37.5
20.0 146.0
1.5
10.9 16.1
5.5
10.0
208
2TP04522425
18.0
50.0
2TP04523625
25.5
70.8
2TP04525425
40.6
112.7
None
--2TP04521825
18.0
43.3
1.5
10.9 16.1
5.5
10.0
20.0 146.0
230
2TP04522425
24.0
57.7
2TP04523625
34.0
81.8
2TP04525425
54.0
129.9
None
--2TP04521846
18
22.6
8.4
73.0
0.8
5.3
8.1
2.2
5.0
460
2TP04522446
24
30.1
2TP04523646
34
42.7
2TP04525446
54
67.8
None
--2TP04521858
18
18.1
6.7
60.0
0.6
4.1
6.0
1.8
4.0
575
2TP04522458
24
24.1
2TP04523658
34
34.1
2TP04525458
54
54.2
1
Maximum HACR breaker of the same AMP size is applicable.
OD Fan
Compressors
Motors
TABLE 8: ELECTRIC HEAT MULTIPLIERS
VOLTAGE
NOMINAL
240
480
600
RATING
kW Cap. Multiplier
208
230
0.75
0.92
460
0.92
575
0.92
NOTE: Electric heaters are rated at nominal voltage. Use
this table to determine the electric heat capacity for
heaters supplied at lower voltages.
12
Min. Circuit
Ampacity
(Amps)
3
HP
71.9
73.0
88.6
114.6
167.0
71.9
80.3
98.3
128.4
156.0
32.4
39.9
49
64
77.8
25.6
31.8
39
51
62.1
5
HP
77.1
79.5
95.1
121.1
173.5
77.1
86.8
104.8
134.9
162.5
35.2
43.4
52.5
67.5
81.3
27.5
34.2
41.4
53.4
64.5
MCA
w/Power
Exhaust
(Amps)
3
5
HP
HP
77.4 82.6
79.8 86.3
95.5 102.0
121.5 128.0
173.9 180.4
77.4 82.6
87.1 93.6
105.2 111.7
135.2 141.7
162.9 169.4
34.6 37.4
42.7 46.2
51.7 55.2
66.7 70.2
80.6 84.1
27.4 29.3
34
36.4
41.2 43.6
53.3 55.6
64.3 66.7
Max
Max Fuse1 Size
Fuse1
w/Power
Size
Exhaust
(Amps)
(Amps)
3
5
3
5
HP HP
HP
HP
90 90
90
100
90 90
90
100
90 100
100
110
125 125
125
150
175 175
175
200
90 90
90
100
90 90
90
100
100 110
110
125
150 150
150
150
175 175
175
175
40 40
40
45
40 45
45
50
50 60
60
60
70 70
70
80
90 90
90
90
30 30
30
35
35 35
35
40
40 45
45
45
60 60
60
60
70 70
70
70
NOTES FOR TABLES 9 AND TABLE 10:
•
Blower performance includes dry coil and 2” throwaway
filters.
•
Blower performance for gas heat includes the maximum
number of heat tubes available for each tonnage.
ESP (External Static Pressure) given is that available for the
supply and return air duct system. All internal resistances
have been deducted from the total static pressure of the
blower.
Johnson Controls Unitary Products
0.4
0.6
0.8
1.0
1.2
External Static Pressure
1.4
1.6
1.8
2.0
Johnson Controls Unitary Products
----
----
----
----
----
----
----
3900 ----
4000 ----
4100 ----
4200 ----
4300 ----
4400 ----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
874 1.93 1801 927 2.04 1906 984 2.27 2113 1037 2.41 2245 1089 2.57 2399 1138 2.68 2499 1178 2.82 2628
885 2.12 1973 932 2.27 2115 982 2.45 2283 1035 2.68 2494 1083 2.82 2626 1130 2.98 2774 1171 3.10 2887 1212 3.29 3066
870 2.01 1877 917 2.18 2028 968 2.34 2182 1022 2.57 2392 1071 2.71 2524 1120 2.87 2672 1163 2.98 2780 1204 3.16 2947
855 1.92 1786 903 2.09 1947 954 2.24 2085 1009 2.46 2295 1060 2.60 2427 1109 2.76 2576 1155 2.88 2680 1195 3.04 2834
840 1.82 1699 888 2.01 1871 941 2.14 1993 997 2.36 2202 1048 2.50 2334 1099 2.67 2485 1146 2.77 2586 1186 2.93 2728
868 2.28 2121 931 2.45 2283 975 2.58 2409 1023 2.81 2616 1074 3.03 2828 1117 3.18 2960 1160 3.34 3111 1196 3.48 3245 1239 3.71 3462
851 2.19 2042 915 2.33 2175 961 2.47 2305 1009 2.68 2501 1061 2.91 2712 1106 3.05 2844 1150 3.21 2993 1188 3.35 3119 1230 3.57 3324
834 2.11 1970 900 2.22 2072 946 2.37 2207 996 2.56 2390 1048 2.79 2601 1094 2.93 2733 1140 3.09 2881 1179 3.22 3000 1221 3.42 3192
----
----
----
----
----
----
High Horsepower Option Required
----
6100 1082 4.64 4326 1152 4.87 4539 1189 5.09 4745 1222 5.39 5027 ----
6200 1098 4.86 4531 1169 5.09 4744 1204 5.29 4927 1236 5.61 5231 ----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
6000 1066 4.43 4127 1136 4.66 4341 1174 4.90 4567 1207 5.18 4828 1243 5.48 5108 ----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
5900 1050 4.22 3936 1119 4.45 4149 1159 4.71 4393 1193 4.97 4635 1229 5.27 4917 1267 5.47 5101 ----
----
-------
-------
----
5800 1033 4.02 3751 1102 4.25 3965 1143 4.53 4224 1178 4.77 4447 1215 5.07 4731 1254 5.28 4918 1279 5.42 5050 ----
----
5700 1017 3.83 3574 1085 4.06 3788 1128 4.35 4058 1164 4.58 4265 1201 4.88 4549 1241 5.08 4740 1267 5.23 4872 1293 5.50 5125 ----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
5600 1001 3.65 3403 1069 3.88 3618 1113 4.18 3897 1149 4.39 4089 1188 4.69 4372 1228 4.90 4566 1256 5.04 4698 1283 5.30 4938 ----
----
----
5500 984 3.48 3240 1052 3.71 3455 1098 4.01 3740 1135 4.20 3918 1174 4.51 4200 1215 4.72 4396 1244 4.86 4528 1273 5.10 4757 1286 5.41 5044 -------
----
5400 968 3.31 3083 1035 3.54 3298 1083 3.85 3587 1120 4.03 3753 1160 4.33 4032 1202 4.54 4231 1233 4.68 4363 1262 4.91 4580 1278 5.20 4848 ----
----
----
----
----
----
----
----
----
----
5300 952 3.15 2934 1018 3.38 3149 1067 3.69 3438 1106 3.85 3593 1147 4.15 3869 1189 4.37 4070 1221 4.51 4202 1252 4.73 4409 1270 5.00 4660 1317 5.36 4996
5200 936 2.99 2791 1002 3.23 3007 1052 3.53 3293 1091 3.69 3439 1133 3.98 3711 1177 4.20 3914 1210 4.34 4046 1242 4.55 4244 1262 4.80 4477 1308 5.15 4800
5100 919 2.85 2656 985 3.08 2872 1037 3.38 3152 1077 3.53 3291 1119 3.82 3558 1164 4.04 3763 1198 4.18 3895 1232 4.38 4083 1254 4.61 4301 1300 4.95 4610
5000 903 2.71 2527 968 2.94 2744 1022 3.24 3016 1062 3.38 3148 1105 3.66 3409 1151 3.88 3616 1187 4.02 3748 1222 4.21 3929 1245 4.43 4131 1291 4.75 4427
4900 887 2.58 2406 952 2.81 2622 1007 3.09 2883 1048 3.23 3011 1092 3.50 3265 1138 3.73 3473 1175 3.87 3605 1211 4.05 3779 1237 4.26 3967 1282 4.56 4250
4800 870 2.46 2291 935 2.69 2508 991 2.96 2755 1033 3.09 2879 1078 3.35 3126 1125 3.58 3335 1164 3.72 3467 1201 3.90 3635 1229 4.09 3810 1273 4.38 4080
4700 854 2.34 2184 918 2.58 2401 976 2.82 2631 1019 2.95 2753 1064 3.21 2991 1112 3.43 3201 1152 3.58 3333 1191 3.75 3496 1221 3.93 3659 1265 4.20 3916
4600 838 2.23 2083 901 2.47 2301 961 2.69 2511 1004 2.82 2633 1051 3.07 2862 1099 3.30 3072 1141 3.44 3204 1181 3.61 3362 1212 3.77 3515 1256 4.03 3758
4500 822 2.13 1990 885 2.37 2208 946 2.57 2395 990 2.70 2518 1037 2.94 2736 1087 3.16 2948 1129 3.30 3080 1171 3.47 3234 1204 3.62 3377 1247 3.87 3607
----
3800 ----
RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts
0.2
3700 ----
CFM
TABLE 9: BLOWER PERFORMANCE 12-1/2 TON SIDE DUCT
349678-JTG-A-1007
13
14
0.2
0.4
0.6
0.8
1.0
External Static Pressure
1.2
1.4
1.6
1.8
2.0
2411
3971
4166
4368
4576
4792
----
5500 1141 4.26
5600 1160 4.47
5700 1178 4.69
5800 1197 4.91
5900 1216 5.14
----
----
----
6000
6100
6200
----
----
----
----
----
Std HP Motor3
Motor Efficiency0.8
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
1198 4.69 4369 1235 4.90 4566 1271 5.10 4756 ----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
1180 4.48 4175 1218 4.69 4373 1255 4.90 4564 1291 5.10 4750 ----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
1162 4.28 3987 1201 4.49 4185 1238 4.70 4378 1275 4.90 4565 1311 5.09 4745 ----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
1144 4.08 3805 1184 4.29 4003 1222 4.50 4196 1259 4.70 4384 1296 4.90 4566 1331 5.09 4742 ----
High Horsepower Option Required
----
----
----
1234 5.12 4776 ----
3784
5400 1122 4.06
----
1216 4.90 4569 1253 5.11 4765 ----
3603
5300 1103 3.87
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
1126 3.89 3629 1167 4.11 3827 1205 4.31 4020 1243 4.51 4208 1281 4.71 4391 1317 4.90 4569 1352 5.09 4740 ----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
1108 3.71 3460 1149 3.92 3656 1189 4.13 3848 1227 4.33 4037 1265 4.53 4221 1302 4.72 4399 1338 4.91 4572 1372 5.09 4740 ----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
1090 3.54 3297 1132 3.74 3491 1172 3.95 3682 1211 4.15 3870 1250 4.35 4054 1287 4.54 4233 1323 4.73 4407 1358 4.91 4577 1392 5.09 4744
1072 3.37 3141 1115 3.57 3331 1156 3.78 3520 1196 3.98 3707 1234 4.17 3891 1272 4.37 4071 1309 4.56 4246 1344 4.74 4417 1379 4.92 4585
1054 3.21 2990 1098 3.41 3177 1139 3.61 3364 1180 3.81 3549 1219 4.00 3732 1257 4.20 3912 1294 4.39 4088 1330 4.57 4260 1365 4.75 4429
3430
1036 3.05 2846 1081 3.25 3029 1123 3.45 3212 1164 3.64 3396 1204 3.84 3578 1242 4.03 3758 1280 4.22 3933 1316 4.40 4106 1352 4.59 4275
1019 2.91 2708 1063 3.10 2886 1106 3.29 3066 1148 3.48 3247 1188 3.68 3428 1227 3.87 3606 1266 4.06 3782 1303 4.24 3955 1338 4.43 4125
1001 2.76 2577 1046 2.95 2749 1090 3.14 2925 1132 3.33 3103 1173 3.52 3281 1212 3.71 3459 1251 3.90 3634 1289 4.08 3807 1325 4.27 3977
5200 1084 3.68
2536
3263
991
4700
2.72
2.59
965 2.50 2332 1012 2.67 2491 1056 2.85 2657 1100 3.03 2828 1142 3.22 3001 1183 3.41 3175 1223 3.59 3348 1261 3.78 3520 1298 3.96 3690
983 2.63 2451 1029 2.81 2617 1073 2.99 2788 1116 3.18 2963 1157 3.37 3139 1198 3.56 3315 1237 3.74 3490 1275 3.93 3662 1311 4.11 3832
5100 1066 3.50
972
4600
2294
947 2.38 2219 995 2.54 2371 1040 2.72 2531 1084 2.89 2697 1127 3.08 2867 1168 3.26 3039 1208 3.44 3211 1247 3.63 3381 1285 3.81 3550
3103
953
4500
2.46
2184
2080
2.16 2012 960 2.30 2147 1007 2.46 2294 1052 2.63 2449 1096 2.80 2611 1138 2.98 2777 1179 3.16 2945 1219 3.34 3113 1258 3.52 3280
929 2.27 2113 977 2.42 2256 1023 2.59 2410 1068 2.76 2571 1111 2.94 2737 1153 3.12 2906 1194 3.30 3076 1233 3.48 3245 1271 3.66 3414
911
893 2.06 1918 943 2.19 2044 990 2.34 2183 1036 2.50 2332 1080 2.67 2489 1123 2.84 2652 1165 3.02 2817 1205 3.20 2983 1244 3.38 3149
2951
934
4400
2.34
2.23
908 1.99 1853 957 2.12 1976 1004 2.27 2112 1050 2.42 2258 1094 2.59 2412 1136 2.76 2571 1177 2.93 2733 1217 3.11 2895
5000 1047 3.33
915
4300
1984
----
4900 1028 3.17
897
4200
2.13
----
----
----
2806
878
4100
----
----
----
875 1.96 1831 926 2.09 1946 974 2.23 2077 1020 2.38 2220 1065 2.54 2372 1108 2.71 2530 1151 2.89 2693 1191 3.06 2856 1231 3.24 3021
4800 1009 3.01
----
4000
----
----
2667
----
3900
----
----
2.86
----
----
3800
RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts RPM BHP Watts
3700
CFM
TABLE 10: BLOWER PERFORMANCE 12-1/2 TON DOWNSHOT
349678-JTG-A-1007
Johnson Controls Unitary Products
349678-JTG-A-1007
TABLE 11: ADDITIONAL STATIC RESISTANCE
CFM
Cooling Only1
Economizer2 3
3700
3900
4100
4300
4500
4700
4900
5100
5300
5500
5700
5900
6100
6300
0.20
0.23
0.25
0.28
0.30
0.33
0.36
0.39
0.42
0.45
0.48
0.52
0.56
0.60
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.06
0.06
0.06
0.06
0.07
0.07
0.07
Electric Heat KW2
18
24
36
54
0.18
0.20
0.22
0.24
0.26
0.29
0.31
0.34
0.37
0.40
0.43
0.46
0.49
0.53
0.21
0.23
0.25
0.28
0.30
0.33
0.35
0.38
0.41
0.44
0.47
0.50
0.53
0.56
0.22
0.24
0.26
0.29
0.31
0.34
0.37
0.40
0.43
0.46
0.49
0.53
0.56
0.59
0.26
0.28
0.31
0.34
0.37
0.40
0.43
0.46
0.49
0.53
0.56
0.59
0.62
0.65
1 Add these resistance values to the available static resistance in the respective Blower Performance Tables.
2 Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
3 The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return
air duct system is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.
TABLE 12: ELECTRIC HEAT MINIMUM SUPPLY AIR CFM
UNIT NOMINAL TONS
HEATER
kW
VOLTAGE
12.5
MINIMUM SUPPLY AIR CFM
208/230
3750
480
3750
600
3750
18
24
36
54
18
24
36
54
18
24
36
54
TABLE 13: INDOOR BLOWER SPECIFICATIONS
MODEL
J12DJ
MOTOR
MOTOR SHEAVE
HP
RPM
Eff.
SF
Frame
Datum Dia. (in.)
3
1725
80%
5
1725
87%
1.15
56
1.15
184T
BLOWER SHEAVE
BELT
Bore (in.)
Model
Datum Dia. (in.)
Bore (in.)
Model
3.4 - 4.4
7/8
1VM50
7.0
1
AK74
A54
4.3 - 5.3
1 1/8
1VP56
6.7
1
BK77
BX55
TABLE 14: POWER EXHAUST SPECIFICATIONS
POWER EXHAUST
MODEL
VOLT
PHASE
2PE0473125
208/230
1
2PE0473146
460
1
2PE0473158
575
1
MOTOR
HP
0.75
RPM1
1075
1050
ELECTRICAL
QTY
1
LRA
FLA
MCA
FUSE
SIZE
24.9
5.0
6.3
10
2.2
2.8
5
1.5
1.9
4
N/A
CFM@
0.1 ESP
3,800
1 Motors are multi-tapped and factory wired for high speed.
Johnson Controls Unitary Products
15
349678-JTG-A-1007
FRONT
FRONT
C
LEFT
D
B
A
LEFT
C
A
B
D
FIGURE 2 -
F
UNIT 4 POINT LOAD
FIGURE 4 -
UNIT WITH 6 POINT LOAD
TABLE 16: 6 POINT LOAD WEIGHT
TABLE 15: 4 POINT LOAD WEIGHT
Locations (lbs.)
Location (lbs.)
Model
Model
J12DJ
E
A
B
C
D
282
359
468
371
J12DJ
A
B
C
D
E
F
184
210
246
323
275
242
TABLE 17: UNIT WEIGHTS
60"
LEFT
FIGURE 3 -
Shipping
Weight (lb.)
Weight (lb.)
Cooling Unit Only
1495
1480
w/Economizer
85
84
w/Power Exhaust
150
148
w/Gas Heat1
110
110
49
49
25-½"
FRONT
UNIT CENTER OF GRAVITY
Operating
Model J12DJ
2
w/Electric Heat
1 8 Tube Heat Exchanger
2 54 kW heater
16
Johnson Controls Unitary Products
349678-JTG-A-1007
119-7/16
For Gas Pipe Entry
see DETAIL A
Convenience
Outlet
Power
Entry
2-1/2
30-11/32
4-1/4
Convenience
Outlet Power
Entry 7/8
Control
Entry
7/8
50-3/4
11-1/2
FRONT
For Baserail
Dimensions
see
DETAIL B
30-3/16
17-3/16
24-3/16
6-3/16
59
89
27
LEFT
For Drain Dimensions
see DETAIL C
FIGURE 5 -
UNIT DIMENSIONS
G a s P ip e In le t
DETAIL A
2 -3 /8
DETAIL B
5 -1 /4
B a s e
P a n
1 7 -1 3 /1 6
V ie w o f W a ll A c r o s s fr o m
3 -3 /4
C o il
3 -9 /1 6
TABLE 18: UNIT CLEARANCES
Top1
72”
Right
Front
36”
Left
Rear
2
36”
12”
36”
3
Bottom
0”
1 Units must be installed outdoors. Overhanging structure or
shrubs should not obstruct condenser air discharge outlet.
2 To remove the slide-out drain pan, a rear clearance of 60” is
required. If space is unavailable, the drain pan can be
removed through the front by separating the corner wall.
3 Units may be installed on combustible floors made from
wood or class A, B or C roof covering materials.
Johnson Controls Unitary Products
DETAIL C
5 -3 /8
17
349678-JTG-A-1007
R IG H T
8 0 -5 /8
IN S U L A T E D D E C K U N D E R
C O N D E N S E R S E C T IO N
2 0
2 0
S U P P L Y
6
R E T U R N
2 T Y P .
3 0
IN S U L A T E D D E C K U N D E R
C O M P R E S S O R S E C T IO N
5 0 -1 /2
F R O N T
8 o r 1 4
FIGURE 6 -
ROOF CURB DIMENSIONS
2 T Y P
5 0 -1 /2
3 0 -1 /2
2 3
4
8 0 -5 /8
2 6
R E T U R N
S U P P L Y
1 0
7 6 -5 /8
9 4
F R O N T
FIGURE 7 -
18
5 9 -1 /4
6 4 -1 /4
R IG H T
TRANSITION ROOF CURBS
Johnson Controls Unitary Products
349678-JTG-A-1007
32-11/16
6-13/16
Supply
Air
6-13/16
6-13/16
Return
Air
24
LEFT
27-1/2
21
18
21-3/16
19-3/16
17-3/16
12-5/16
7-1/8
FRONT
14-23/32
16-3/8
18-1/16
19-5/8
Bottom
Condensate
Drain
Bottom
Power, Control and
Convenience Outlet
Wiring Entries
Bottom
Gas Supply Entry
63-1/2
FIGURE 8 -
BOTTOM DUCT OPENINGS (FROM ABOVE)
Dot
Plugs
18-1/4
Return
Air
28-1/4
Supply
Air
18-1/4
18-1/16
2-31/32
28-1/4
5-5/32
FIGURE 9 -
31-11/16
SIDEFLOW DUCT DIMENSIONS
Johnson Controls Unitary Products
19
349678-JTG-A-1007
FIGURE 10 - DOWNFLOW ECONOMIZER HOOD DETAIL
TABLE 19: ECONOMIZER USAGE
Application
Description
Model
Bottom Return
Downflow economizer with barometric relief
2EE04705424
Side Return
Horizontal economizer without barometric relief
2EE047055241
ERV or End Return
Slab Economizer, 50” tall cabinet
2EE047052242
1 Barometric relief must be ordered seperately and installed in duct work.
2 Barometric relief or fresh air hood not included. Must be ordered seperately.
2EE04705424
Fresh Air Hood
2EE04705424
2EE04705424
2EE04705424
Fresh Air Damper Return Air Damper
Barometric Relief Damper
2EE04705424
Barometric Relief Hood
FIGURE 11 - FACTORY INSTALLED DOWNFLOW ECONOMIZER
20
Johnson Controls Unitary Products
349678-JTG-A-1007
2EE04705424
Fresh Air Hood
2EE04705424
2EE04705424
Fresh Air Damper Return Air Damper
2PE047032XX
Power Exhaust
2EE04705424
Barometric Relief Damper
2EE04705424
Barometric Relief Hood
FIGURE 12 - FIELD INSTALLED DOWNFLOW ECONOMIZER W/POWER EXHAUST
2EE04705524
Return Air Damper
Field Installed
Duct Work
2EE04705524
Fresh Air Damper
2PE047032XX
Power Exhaust
1EH0408
Barometric
Relief Damper
1EH0408
Barometric
Relief Hood
2EE04705524
Fresh Air Hood
FIGURE 13 - FIELD INSTALLED HORIZONTAL ECONOMIZER W/POWER EXHAUST
Johnson Controls Unitary Products
21
349678-JTG-A-1007
1EH0409
Fresh Air Hood
2EE04705X24
Slab Economizer
2PE047032XX
Power Exhaust
1EH0409 Barometric
Relief Damper
1EH0409 Barometric
Relief Hood
FIGURE 14 - SLAB ECONOMIZER DOWNFLOW W/POWER EXHAUST
1EH0409
Fresh Air Hood
Field Installed
Duct Work
2EE04705X24
Slab Economizer
1EH0409
Barometric Relief Hood
1EH0409
Barometric Relief Damper
2PE047032XX
Power Exhaust
FIGURE 15 - SLAB ECONOMIZER END RETURN W/POWER EXHAUST
22
Johnson Controls Unitary Products
349678-JTG-A-1007
FIGURE 16 - COOLING UNIT WITH GAS HEAT WIRING 230 V. DIAGRAM
Johnson Controls Unitary Products
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349678-JTG-A-1007
FIGURE 17 - COOLING UNIT W/WO ELECTRIC HEAT WIRING DIAGRAM
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Johnson Controls Unitary Products
349678-JTG-A-1007
FIGURE 18 - COOLING UNIT WITH GAS HEAT WIRING 460, 575 & 50 HZ DIAGRAM
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349678-JTG-A-1007
MECHANICAL SPECIFICATIONS
SINGLE PACKAGE AIR COOLED GAS/ELECTRIC UNITS FOR 12.5 NOMINAL TONS
SERIES 10
J12DJ
11.35 EER
GENERAL
Units shall be manufactured by Johnson Controls in an ISO
9001 certified facility. Series 10 J12DJ units are convertible
single packages with a common footprint cabinet and common roof curb for all 12-1/2 ton models. All units have two
compressors with independent refrigeration circuits to provide 2 stages of cooling. The units were designed for light
commercial applications and can be easily installed on a roof
curb, slab, or frame. All J12DJ units are self-contained and
assembled on rigid full perimeter base rails allowing for 3-way
forklift access and overhead rigging. Every unit is completely
charged, wired, piped, and tested at the factory to provide a
quick and easy field installation. All units are convertible
between side and down airflow. Independent J12DJ Economizer designs are used on side and down discharge applications, as well as all tonnage sizes. J12DJ units are available
in the following configurations: cooling only, cooling with electric heat, and cooling with gas heat. Electric heaters are available as factory-installed options or field-installed accessories.
DESCRIPTION
Units shall be factory assembled, single package, (Elec/Elec,
Gas/Elec), designed for outdoor installation. Units shall have
a minimum EER of 11.35. They shall have built in field convertible duct connections for down discharge supply/return or
horizontal discharge supply/return and be available with factory installed options or field installed accessories. The units
shall be factory wired, piped and charged with R-22 refrigerant and factory tested prior to shipment. All unit wiring shall
be both numbered and color coded. The cooling performance
shall be rated in accordance with DOE and ARI test procedures. Units shall be CSA certified to ANSI Z21.47 and UL
1995/CAN/CSA No. 236-M90 standards.
UNIT CABINET
Unit cabinet shall be constructed of a combination of G60 and
G90 galvanized steel, with exterior surfaces coated with a
non- chalking, powdered paint finish, certified at 750 hours
salt spray test per ASTMB117 standards. Indoor blower sections shall be insulated with 1/2” thick insulation coated on
the airside. Aluminum foil faced insulation shall be used in the
unit’s compartments and be fastened to prevent insulation
from entering the air stream. Cabinet doors shall be hinged
with toolless access for easy servicing and maintenance. Full
perimeter base rails shall be provided to assure reliable transit of equipment, overhead rigging, fork truck access and
proper sealing on roof curb applications. Disposable 2” filters
shall be furnished and be accessible through hinged access
door. Fan performance measuring ports shall be provided on
the outside of the cabinet to allow accurate air measurements
of evaporator fan performance without removing panels or
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creating bypass of the coils. Condensate pan shall be slide
out design, constructed of a non corrosive material, internally
sloped and conforming to ASHRAE 62-B9 standards. Condensate connection shall be a minimum of ¾” I.D. female and
be rigid mount connection.
INDOOR (EVAPORATOR) FAN ASSEMBLY
Fan shall be a belt drive assembly and include an adjustable
pitch motor pulley. Job site selected brake horsepower shall
not exceed the motors nameplate horsepower rating plus the
service factor. Units shall be designed to operate within the
service factor. Fan wheel shall be double inlet type with forward curve blades, dynamically balanced to operate
smoothly throughout the entire range of operation. Airflow
design shall be constant volume. Bearings shall be sealed
and permanently lubricated for longer life and no maintenance. Entire blower assembly and motor shall be slide out
design.
OUTDOOR (CONDENSER) FAN ASSEMBLY
The outdoor fans shall be of the direct drive type, discharge
air vertically, have aluminum blades riveted to corrosion
resistant steel spider brackets and shall be dynamically balanced for smooth operation. The outdoor fan motors shall
have permanently lubricated bearings internally protected
against overload conditions and staged independently. A
cleaning window shall be provided on two sides of the units
for coil cleaning.
REFRIGERANT COMPONENTS
Compressors:
a.
Shall be scroll type, direct drive, internally protected with
internal high-pressure relief and over temperature protection. The hermetic motor shall be suction gas cooled
and have a voltage range of + or – 10% of the unit nameplate voltage.
b.
Shall have internal spring isolation and sound muffling to
minimize vibration and noise, and be externally isolated
on a dedicated, independent mounting.
Coils:
a.
Evaporator and condenser coils shall have aluminum
plate fins mechanically bonded to seamless internally
enhanced copper tubes with all joints brazed. Special
Phenolic coating shall be available as a factory option.
b.
Evaporator and condenser coils shall be of the direct
expansion, draw-thru design.
Johnson Controls Unitary Products
349678-JTG-A-1007
Refrigerant Circuit and Refrigerant Safety Components shall
include:
ing temperature of 40 °F. Burners shall be of the in-shot type,
constructed of aluminum-coated steel. All gas piping shall
enter the unit cabinet at a single location, through either the
side or bottom, without any field modifications. An integrated
control board shall provide timed control of evaporator fan
functioning and burner ignition. Heating section shall be provided with the following minimum protection:
a.
Independent fixed-orifice or thermally operated expansion devices.
b.
Solid core filter drier/strainer to eliminate any moisture or
foreign matter.
c.
Accessible service gage connections on both suction
and discharge lines to charge, evacuate, and measure
refrigerant pressure during any necessary servicing or
troubleshooting, without losing charge.
a.
Primary and auxiliary high-temperature limit switches.
b.
Induced draft pressure sensor.
c.
Flame roll out switch (manual reset).
The unit shall have two independent refrigerant circuits,
equally split in 50% capacity increments.
d.
Flame proving controls. Unit shall have two independent
stages of capacity (60% 1st stage, 100% 2nd stage).
d.
Unit Controls:
a.
Unit shall be complete with self-contained low-voltage
control circuit protected by a resetable circuit breaker on
the 24-volt transformer side.
b.
Unit shall incorporate a lockout circuit which provides
reset capability at the space thermostat or base unit,
should any of the following standard safety devices trip
and shut off compressor:
(1) loss-of-charge/Low-pressure switch,
(2) high-pressure switch,
(3) freeze-protection thermostat, evaporator coil.
c.
If any of the above safety devices trip, a LED (light-emitting diode) indicator shall flash a diagnostic code that
indicates which safety switch has tripped.
d.
Unit shall incorporate “AUTO RESET” compressor over
temperature, over current protection.
e.
Unit shall operate with conventional thermostat designs
and have a low voltage terminal strip for easy hook-up.
f.
Unit control board shall have on-board diagnostics and
fault code display.
g.
Standard controls shall include anti-short cycle and low
voltage protection, and permit cooling operation down to
0 °F.
h.
Control board shall monitor each refrigerant safety
switch independently.
i.
Control board shall retain last 5 fault codes in non volatile memory, which will not be lost in the event of a power
loss.
GAS HEATING SECTION (IF EQUIPPED)
Heat exchanger and exhaust system shall be constructed of
aluminized steel or optional stainless steel. Shall be designed
with induced draft combustion with post purge logic, energy
saving direct spark ignition, and redundant main gas valve.
The heat exchanger shall be of the tubular type, constructed
of T1-40 aluminized steel (or optional 304 stainless steel) for
corrosion resistance and allowing minimum mixed air enter-
Johnson Controls Unitary Products
ELECTRIC HEATING SECTION (IF EQUIPPED)
An electric heating section, with nickel chromium elements,
shall be provided in a range of 9 thru 54 KW, offering two
stages of capacity all sizes. The heating section shall have a
primary limit control(s) (automatic reset) to prevent the heating element system from operating at an excessive temperature. The Heating Section assembly shall slide out of the unit
for easy maintenance and service. Units with Electric Heating
Sections shall be wired for a single point power supply with
branch circuit fusing (where required).
UNIT OPERATING CHARACTERISTICS
Unit shall be capable of starting and running at 125 °F outdoor temperature, exceeding maximum load criteria of ARI
Standard 340/360. The compressor, with standard controls,
shall be capable of operation down to 0 °F outdoor temperature. Unit shall be provided with fan time delay to prevent cold
air delivery before heat exchanger warms up. (Gas heat
only).
ELECTRICAL REQUIREMENTS
All unit power wiring shall enter unit cabinet at a single factory
provided location and be capable of side or bottom entry to
minimize roof penetrations and avoid unit field modifications.
Separate side and bottom openings shall be provided for the
control wiring.
STANDARD LIMITED WARRANTIES
Compressor – 5 Years, Heat Exchanger – 10 Years, Elect.
Heat Elem. – 5 Years, Parts – 1 Year
FACTORY INSTALLED OPTIONAL OUTDOOR AIR (Shall
be made available by either/or):
1.
ELECTRONIC ENTHALPY AUTOMATIC ECONOMIZER – Outdoor and return air dampers that are interlocked and positioned by a fully-modulating, springreturn damper actuator. The maximum leakage rate for
the outdoor air intake dampers shall not exceed 2%
when dampers are fully closed and operating against a
pressure differential of 0.5 IWG. A unit-mounted potentiometer shall be provided to adjust the outdoor and return
air damper assembly to take in outdoor air to meet the
minimum ventilation requirement of the conditioned
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2.
space during normal operation. During economizer operation, a mixed-air temperature control shall modulate the
outdoor and return air damper assembly to prevent the
supply air temperature from dropping below 55 °F.
Changeover from compressor to economizer operation
shall be provided by an integral electronic enthalpy control that feeds input into the basic module. The outdoor
intake opening shall be covered with a rain hood that
matches the exterior of the unit. Water eliminator/filters
shall be provided. Simultaneous economizer/compressor
operation is also possible. Dampers shall fully close on
power loss. Available with barometric relief or power
exhaust.
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DISCONNECT SWITCH - A disconnect can be factory
installed on cooling only units, sized for the largest electric heat available.
•
ELECTRIC HEAT - The electric heaters range from 18
kW to 54 kW and are available in all the voltage options
of the base units.
•
STAINLESS STEEL HEAT EXCHANGER – For applications in a corrosive environment, this option provides a
full stainless steel heat exchanger assembly.
•
STAINLESS STEEL DRAIN PAN - Provides years of
trouble free operation in corrosive environments.
MOTORIZED OUTDOOR AIR DAMPERS – Outdoor
and return air dampers that are interlocked and positioned by a 2-position, spring-return damper actuator.
The maximum leakage rate for the outdoor air intake
dampers shall not exceed 2% when dampers are fully
closed and operating against a pressure differential of
0.5 IWG. A unit-mounted potentiometer shall be provided
to adjust the outdoor and return air damper assembly to
take in the design CFM of outdoor air to meet the ventilation requirements of the conditioned space during normal
operation. Whenever the indoor fan motor is energized,
the dampers open up to one of two pre-selected positions – regardless of the outdoor air enthalpy. Dampers
return to the fully closed position when the indoor fan
motor is de-energized. Dampers shall fully close on
power loss.
•
SMOKE DETECTOR – A smoke detector can be factory
mounted and wired in the supply and/or return air compartments.
ADDITIONAL FACTORY INSTALLED OPTIONS
•
•
ALTERNATE INDOOR BLOWER MOTOR – For applications with high restrictions, units are available with
optional indoor blower motors that provide higher static
output and/or higher airflow.
CONVENIENCE OUTLET (POWERED/NON-POWERED) – Unit can be provided with an optional 120VAC
GFCI outlet with cover on the corner of the unit housing
the compressors.
•
PHASE MONITOR - Designed to prevent damage in outof-phase condition.
•
COIL GUARD - Designed to prevent condenser coil
damage.
•
•
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 highpressure drop across the filters.
CONTROL OPTIONS
•
JOHNSON LIGHT COMMERCIAL SYSTEM (LCCS) Provides rooftop system integration for LCCS single
zone, change-over bypass and VAV systems.
•
JOHNSON UNT 1126 ROOFTOP CONTROLLER - N2
protocol with air proving and dirty filter sensors. Hardware contains generic application logic; field engineering
and/or modification may be required.
OTHER PRE-ENGINEERED ACCESSORIES AVAILABLE
•
ROOF CURB - 14” and 8” high, full perimeter knockdown
curb, with hinged design for quick assembly.
•
BAROMETRIC RELIEF DAMPER – (Unit mounted –
Downflow, Duct Mounted – Sideflow) – Contains a rain
hood, air inlet screen, exhaust damper and mounting
hardware. Used to relieve internal air pressure through
the unit during economizer operation.
•
PROPANE CONVERSION KIT – Contains new orifices
and gas valve springs to convert from natural to L.P. gas.
•
–60 °F GAS HEAT KIT – Provides an electric heat kit for
the gas compartment for use in extreme low ambient
conditions.
•
ECONOMIZER (Downflow and Sideflow)
•
POWER EXHAUST – (Unit mount – Downflow, Duct
mount – Sideflow)
•
DUAL ENTHALPY KIT - Provides a second input to
economizer to monitor return air.
BREAKER – An HACR breaker can be factory installed
on the gas heat units or cooling units with electric heater.
Subject to change without notice. Printed in U.S.A.
Copyright © 2008 by Johnson Controls, Inc. All rights reserved.
Johnson Controls Unitary Products
5005 York Drive
Norman, OK 73069
349678-JTG-A-1007
Supersedes: Nothing
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