Johnson Controls NH-07 Series User manual

R-410A
520413-BIM-A-0209
MODELS: NH-07 Thru -20, 2-Pipe
NJ-10 Thru -20, 4-Pipe
7.5 - 20 Ton, 60 Hertz
TABLE OF CONTENTS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Renewal Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Agency Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unit Application Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Physical Data Indoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Air Discharge Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Duct Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Refrigerant Mains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Expansion Valve Bulb Installation. . . . . . . . . . . . . . . . . . . 13
Air System Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Airflow Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Airflow Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Twin Belt Drive Adjustment. . . . . . . . . . . . . . . . . . . . . . . . 29
Sequence of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Typical Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Air Handling Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
LIST OF TABLES
1 Unit Application Data Indoor . . . . . . . . . . . . . . . . . . . . . . . 4
2 Physical Data Indoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Minimum Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Corner Weights & Center of Gravity NH/NJ Unit . . . . . . . 9
5 Accessory Operating Weight Distribution (Lbs) . . . . . . . 10
6 Electrical Data - Electric Heat . . . . . . . . . . . . . . . . . . . . . 16
7 Altitude/Temperature Correction Factors . . . . . . . . . . . . 19
8 Example Supply Air Blower Performance. . . . . . . . . . . . 20
9 RPM Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
10 NH-07 Upflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
11 NH-07 Horizontal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
12 NH/NJ-10 Upflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
13 NH/NJ-10 Horizontal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
14 NH/NJ-15 Upflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
15 NH/NJ-15 Horizontal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
16 NH/NJ-20 Upflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
17 NH/NJ-20 Horizontal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
18 RPM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
19 Additional Static Resistance . . . . . . . . . . . . . . . . . . . . . . 26
20 Blower Motor And Drive Data . . . . . . . . . . . . . . . . . . . . . 27
21 Unit Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
LIST OF FIGURES
1 Vertical Airflow Arrangements . . . . . . . . . . . . . . . . . . . . . 6
2 Horizontal Airflow Arrangements . . . . . . . . . . . . . . . . . . . 6
3 Typical Cabinet Clamp Assembly . . . . . . . . . . . . . . . . . . 6
4 Typical Suspension of AHU’s From Ceiling . . . . . . . . . . . 8
5 Suggested Method For Connecting Ductwork . . . . . . . . 10
6 Recommended Drain Piping . . . . . . . . . . . . . . . . . . . . . 11
7 Typical Field Wiring Diagram - NH-07 Unit . . . . . . . . . . 14
8 Typical Field Wiring Diagram - NH/NJ-10 Thru -20 Unit 15
9 NH/NJ-10 Thru -20 Liquid Line Solenoid Wiring . . . . . . 15
10 Altitude/Temperature Correction Factors. . . . . . . . . . . . 19
11 Hole Location For Pressure Drop Reading . . . . . . . . . . 27
12 Pressure Drop Across A Dry Indoor Coil vs. Supply
Air CFM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
13 Belt Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
14 Double Groove Pulley . . . . . . . . . . . . . . . . . . . . . . . . . . 29
15 Unit Dimensions NH-07 Thru -10 & NJ-10 . . . . . . . . . . 31
16 Unit Dimensions NH/NJ-15 . . . . . . . . . . . . . . . . . . . . . . 32
17 Unit Dimensions NH/NJ-20 . . . . . . . . . . . . . . . . . . . . . . 33
18 Typical Horizontal Configuration . . . . . . . . . . . . . . . . . . 34

520413-BIM-A-0209
2Johnson Controls Unitary Products
General
These completely assembled 7-1/2 thru 20 ton evaporator
blower units include a well insulated cabinet, a DX cooling coil
with copper tubes and aluminum fins, expansion valve(s), a dis-
tributor(s), throwaway filters, centrifugal blower(s), a blower
motor, and a small holding charge of dry nitrogen. Blower
motors and adjustable drives are factory-installed on all units.
Supplemental resistance heaters, a supply air plenum, a return
air grill, hot water coils, non-freeze steam coils, and a base are
available as accessories for field installation.
The units are shipped in the vertical position ready for field
installation.
Safety Considerations
Installer should pay particular attention to the words: NOTE,
CAUTION, and WARNING. Notes are intended to clarify or
make the installation easier. Cautions are given to prevent
equipment damage. Warnings are given to alert installer that
personal injury and/or equipment damage may result if installa-
tion procedure is not handled properly.
Reference
This instruction covers the installation and operation of evapo-
rator blower units. For information on the operation of matching
condensing units, refer to Installation Manual - 430646 for cool-
ing units and Installation Manual - 430647 for heat pumps.
Additional information on the design, installation, operation and
service of this equipment is available in the Technical Guide -
505430.
Renewal Parts
Contact your local UP Parts Distribution Center for authorized
replacement parts.
Agency Approvals
Design certified by CSA as follows:
1. For use as a (cooling coil, heat pump coil/air handler) only
with or without supplemental electric heat.
2. For indoor installation only.
Inspection
As soon as a unit is received, it should be inspected for possible
damage during transit. If damage is evident, the extent of the
damage should be noted on the carrier’s freight bill. A separate
request for inspection by the carrier’s agent should be made in
writing.
Improper installation may create a condition where the
operation of the product could cause personal injury or
property damage.
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage.
Refer to this manual for assistance or for additional
information, consult a qualified contractor, installer or
service agency.
This system uses R-410A Refrigerant which operates at
higher pressures than R-22. No other refrigerant may be
used in this system. Gage sets, hoses, refrigerant
containers and recovery systems must be designed to
handle R-410A. If you are unsure, consult the
equipment manufacturer. Failure to use R-410A
compatible servicing equipment may result in property
damage or injury.
This product must be installed in strict compliance with
the enclosed installation instructions and any applicable
local, state and national codes including, but not limited
to, building, electrical, and mechanical codes.
Wear safety glasses and gloves when handling
refrigerants. Failure to follow this warning can cause
serious personal injury.

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Johnson Controls Unitary Products 3
Nomenclature
Product Category
N = Split System, Air Handler, AC & HP, R-410A
Product Identifier
H = Standard Efficiency, 2-Pipe, R-410A
J = Standard Efficiency, 4-Pipe, R-410A
Nominal Cooling Capacity - MBH
-07 = 7.5 Ton
-10 = 10 Ton
-15 = 15 Ton
-20 = 20 Ton
C00 = Cooling Only
Product Options
AA = None
Installation Options
A = None
S = 208/230/460-3-60
X = 575-3-60
Configured Split Air Handler Model Number Nomenclature
B = 1.5 HP Motor
C = 2.0 HP Motor
D = 3 HP Motor
E = 5 HP Motor
F = 7.5 HP Motor
Airflow
Product Generation
1 = First Generation
Voltage
Heat Type & Nominal Heat Capacity
NH-20 C00 B SAAA 2A
Product Style
A = Style A

520413-BIM-A-0209
4Johnson Controls Unitary Products
Unit Application Data
Table 1: Unit Application Data Indoor
Model Power Supply Voltage Voltage Variation Supply Air Range CFM Entering Air Temperature Degrees °F
Cooling
DB/WB Heating DB1
Min. Max. Min. Max. Min. Max. Min. Max.
NH-07 208/230-3-60 187 253 2,250 3,750 65/57 90/77 40 80 460-3-60 414 506 2,250 3,750 65/57 90/77 40 80
575-3-60 540 630 2,250 3,750 65/57 90/77 40 80
NH-10 208/230-3-60 187 253 3,000 5,000 65/57 90/77 40 80 460-3-60 414 506 3,000 5,000 65/57 90/77 40 80
575-3-60 540 630 3,000 5,000 65/57 90/77 40 80
NJ-10 208/230-3-60 187 253 3,000 5,000 65/57 90/77 40 80 460-3-60 414 506 3,000 5,000 65/57 90/77 40 80
575-3-60 540 630 3,000 5,000 65/57 90/77 40 80
NH-15 208/230-3-60 187 253 4,500 7,500 65/57 90/77 40 80 460-3-60 414 506 4,500 7,500 65/57 90/77 40 80
575-3-60 540 630 4,500 7,500 65/57 90/77 40 80
NJ-15 208/230-3-60 187 253 4,500 7,500 65/57 90/77 40 80 460-3-60 414 506 4,500 7,500 65/57 90/77 40 80
575-3-60 540 630 4,500 7,500 65/57 90/77 40 80
NH-20 208/230-3-60 187 253 6,000 10,000 65/57 90/77 40 80 460-3-60 414 506 6,000 10,000 65/57 90/77 40 80
575-3-60 540 630 6,000 10,000 65/57 90/77 40 80
NJ-20 208/230-3-60 187 253 6,000 10,000 65/57 90/77 40 80 460-3-60 414 506 6,000 10,000 65/57 90/77 40 80
575-3-60 540 630 6,000 10,000 65/57 90/77 40 80
1. Heating Min/Max temperatures apply to steam and hot water coils. NOTE: Do not apply steam to hot water coils.

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Johnson Controls Unitary Products 5
Physical Data Indoor Unit
Air Discharge Conversion
These units are shipped for Vertical Airflow operation as seen in
Figure 1 Positions 1 thru 4, but may be converted for Horizontal
Airflow operation illustrated in Figure 2 Positions 1 thru 4.
Conversion Example:
Convert Vertical Airflow Position 1 to Horizontal Airflow Position
1 as follows:
1. Remove the front blower panel from the blower section and
set aside. This allows access to the clamps that hold the
blower section to the evaporator section.
2. Remove the bolts and clamp angles that hold the coil
section and blower section together.
3. Place the panel removed in Step 1 on top of the blower
section and screw together.
4. Set the blower section aside.
5. Remove the evaporator section rear panel and set aside.
6. Rotate the blower section and mate it to the hole left when
the panel was removed in Step 5.
7. Bolt and clamp the two sections together.
8. Place the panel remove
1. d in Step 5 on top of the evaporator section and screw
together.
NOTE: 1 inch blower duct flange shipped with air handler.
Table 2: Physical Data Indoor Unit
Component Models
NH-07 NH-10 NJ-10 NH-15 NJ-15 NH-20 NJ-20
Nominal Tonnage 7 1/2 10 10 15 15 20 20
DIMENSIONS (inches)
Length 56.0 56.0 56.0 74.5 74.5 98.5 98.5
Width 30.0 30.0 30.0 33.0 33.0 30.0 30.0
Height 65.0 65.0 65.0 75.0 75.0 65.0 65.0
WEIGHTS (lb)
Unit Shipping 405 512 512 681 681 874 874
Unit Operating With
Standard Motor and Drive 381 468 468 632 632 816 816
High Static Motor and Drive 385 492 492 661 661 854 854
INDOOR BLOWER (Forward Curve)
Diameter x Width 12 x 12 15 x 15 15 x 15 18 x 18 18 x 18 15 x 15 15 x 15
Quantity 1111122
INDOOR COIL
Face area (Sq. Ft.) 10.6 10.6 10.6 18.3 18.3 20.0 20.0
Rows 3443443
Fins per inch 15 15 15 15 15 15 15
Tube diameter 3/8 3/8 3/8 3/8 3/8 3/8 3/8
Circuitry Type Interfaced Interfaced Interfaced Interfaced Interfaced Interfaced Interfaced
Refrigerant Control TXV TXV TXV TXV TXV TXV TXV
Operating Charge (lb) 4 6 6 10 10 10 10
SYSTEM DATA
No.RefrigerationCircuits 1121212
Suction Line OD (in.) 1 1/8 1 3/8 1 1/8 1 5/8 1 1/8 1 5/8 1 3/8
Liquid Line OD (in.) 5/8 7/8 5/8 7/8 5/8 7/8 7/8
FILTERS
Size and Quantity Per Model (In.) 16 x 25 x 2 4 4 4 --- --- 8 8
20 x 24 x 2 --- --- --- 6 6 --- ---
Face area (Sq. Ft.) 11.1 11.1 11.1 20.0 20.0 22.2 22.2
Size and Quantity Per Model (In.) 16 x 25 x 4 4 4 4 --- --- 8 8
18 x 24 x 4 --- --- --- 6 6 --- ---
Face area (Sq. Ft.) 11.1 11.1 11.1 18.0 18.0 22.2 22.2

520413-BIM-A-0209
6Johnson Controls Unitary Products
Figure 3: Typical Cabinet Clamp Assembly
Figure 1: Vertical Airflow Arrangements
Figure 2: Horizontal Airflow Arrangements
BLOWER
EVAPORATOR
COIL POSITION
1
POSITION
2POSITION
3
POSITION
4
POSITION
1
POSITION
3
POSITION
4
POSITION
2
3/8” x 1 1/4” Bolt
Clamp
See Detail A
Typical Cabinet Clamp Assembly
Lock
Bolt
Washer
Detail A
Detail B
Cabinet Clamp Assembly
Flat

520413-BIM-A-0209
Johnson Controls Unitary Products 7
Unit Installation
Location
These evaporator blowers are not designed for outdoor
installation. They must be located inside a building structure,
either inside or outside the conditioned space where they are
protected from rain and other moisture.
The unit should be located as close to the condensing unit as
practical and positioned to minimize bends in the refrigerant
piping.
Units being installed vertically or horizontally can be set directly
on a floor or platform, or supported by metal or wooden beams.
Rigging
Care must be taken when moving the unit. Do not remove any
packaging until the unit is near the place of installation.
SPREADER BARS SHOULD BE USED BETWEEN THE
SLINGS TO PREVENT CRUSHING THE UNIT FRAME OR
PANELS. When preparing to move the unit, always determine
the center of gravity of the unit in order to equally distribute the
weight. Rig the unit by attaching chain or cable slings around
the bottom skid. A lift truck may be used to raise a unit to a
suspended location. Refer to Table 4 for unit weights.
Clearances
NOTE: If the coil has to be removed, the blower section can be unbolted
and set aside and the coil can be lifted out the top of the
evaporator section.
A 24-inch clearance is required on the end with the piping
connections and the supply air blower motor to properly service
and maintain the unit.
Some clearance will also be required for the duct and power
wire connections.
Table 3: Minimum Clearances
Minimum Clearances
Top with Supply Air Opening1
1. This dimension will vary if an electric heater, a supply air plenum or a
base is used.
24”
Front with Return Air Opening 24”
Right Side with Access for Piping, Power &
Control Wiring Connections2
2. This dimension is required for normal installation and service.
24”
Left Side 24”
Rear3
3. Although no clearance is required for service and operation, some
clearance may be required for routing the power and control wiring.
N/A
Bottom4
4. Allow enough clearance to trap the condensate drain line.
N/A

520413-BIM-A-0209
8Johnson Controls Unitary Products
Mounting
The split air handling units can be applied in various horizontal
positions. Figure 4 shows recommended suspension rigging
using properly sized all-thread and metal c-channel. All
components to suspend an AHU must be field supplied. Please
refer to the units total weight, center of gravity and corner
weights (Horizontal position) shown in the appropriate table for
proper support sizing.
Figure 4: Typical Suspension of AHU’s From Ceiling
END VIEW
SIDE VIEW
All Thread
Steel Rod
Mounting
Bracket
Steel C-
channel
Flat Washer /
Lock Washer
and Nut
MOUNTING DETAIL

520413-BIM-A-0209
Johnson Controls Unitary Products 9
Table 4: Corner Weights & Center of Gravity NH/NJ Unit
Model Options Weight (lbs.) Center of Gravity (in.) 4 Point Load Location (lbs.) 6 Point Load Location (lbs.)
Shipping Operating X Y A B C D A B C D E F
Vertical Airflow
NH-07 Std. Mtr. and Drv. 357 381 30 30 102 102 88 88 68 68 68 59 59 59
High Static Mtr. and Drv. 357 385 30 30 103 103 89 89 69 69 69 60 60 60
NH/NJ-10 Std. Mtr. and Drv. 422 468 30 30 125 125 109 109 84 84 84 72 72 72
High Static Mtr. and Drv. 422 492 31 29 123 132 123 115 81 85 89 83 79 76
NH/NJ-15 Std. Mtr. and Drv. 560 632 36 36 139 167 178 148 90 101 115 122 108 96
High Static Mtr. and Drv. 560 661 36 35.5 143 172 189 157 93 104 118 130 114 102
NH/NJ-20 Std. Mtr. and Drv. 715 816 32 48 186 212 223 195 121 132 145 152 139 127
High Static Mtr. and Drv. 715 854 32 47 190 217 238 208 124 135 148 162 148 136
Horizontal Airflow
NH-07 Std. Mtr. and Drv. 357 381 15 30 102 102 88 88 68 68 68 59 59 59
High Static Mtr. and Drv. 357 385 15 30 103 103 89 89 69 69 69 60 60 60
NH/NJ-10 Std. Mtr. and Drv. 422 468 15 30 125 125 109 109 84 84 84 72 72 72
High Static Mtr. and Drv. 422 492 15.5 29 123 132 123 115 81 85 89 83 79 76
NH/NJ-15 Std. Mtr. and Drv. 560 632 18 36 139 167 178 148 90 101 115 122 108 96
High Static Mtr. and Drv. 560 661 18 35.5 143 172 189 157 93 104 118 130 114 102
NH/NJ-20 Std. Mtr. and Drv. 715 816 16 48 186 212 223 195 121 132 145 152 139 127
High Static Mtr. and Drv. 715 854 16 47 190 217 238 208 124 135 148 162 148 136
CG
LENGTH
WIDTH
A
D
FRONT REAR
LEFT
RIGHT
DIM X
DIM Y
B
C
ABC
D
E
F
VERTICAL POSITION
CG
DIM X
DIM Y
LENGTH
WIDTH
A
D
FRONT REAR
LEFT
RIGHT
B
C
ABC
D
E
F
HORIZONTAL POSITION

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10 Johnson Controls Unitary Products
Duct Connections
Ductwork should always be suspended with hangers or
supported by legs. It should never be fastened directly to the
building structure.
Allow clearance around ducts for safety in the handling of
heated air and for insulation when required.
Insulation
Ductwork insulation should meet the following criteria:
• Be used when ducts pass through an unconditioned
space in the cooling season or through an unheated
space during the heating season.
• Include a vapor barrier around the outside to prevent the
absorption of moisture.
• Be no less than 2 inches thick with a weatherproof coating
when applied to ducts exposed to outdoor conditions.
Supply Air Ducts
See Figure 5 for suggested method of connecting supply air
ductwork. Non-flammable material collars should be used to
minimize the transmission of noise and/or vibration.
Figure 5: Suggested Method For Connecting Ductwork
Table 5: Accessory Operating Weight Distribution (Lbs)1
ACCESSORY NH-07 NH/NJ-10 NH/NJ-15 NH/NJ-20
BASE225 25 30 45
HOT WATER COIL 35 35 45 35
STEAM COIL 30 30 35 50
1.These weights should be added to each point load in table 4.
2.This accessory can only be applied on units installed in the vertical position.
24"
AIR
OUTLET
BLOWER
GASKETS
(BY INSTALLER)
FLANGED DUCT
CONNECTION
(Factory Furnished,
Field Installed )
NON-FLAMMABLE
COLLAR
DUCT
TRANSITION
DUCT