Johnson Controls JHVV Series User manual

Johnson Controls Ducted Systems 6284251-UIM-B-0223
Premium Variable Speed
ECM Single Piece
Multi-position Air Handlers
Models: JHVV Series
INSTALLATION MANUAL
®
List of sections
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Unit installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Ductwork and connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Coil metering devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Refrigerant line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Condensate drain connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electric heater installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Line power connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Low voltage control connections . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Airflow and comfort setting selection . . . . . . . . . . . . . . . . . . . . . 16
Unit data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Air system adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Installation verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Wiring diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Start-up sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
List of figures
Return air duct attachment and component location . . . . . . . . . . . . . 2
Pressure check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Dimensions and duct connection dimensions . . . . . . . . . . . . . . . . . . 3
Typical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Horizontal baffle plate installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Suspension support locations for horizontal applications . . . . . . . . . 6
Duct attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ductwork transition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Grommets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Line power connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
EEV connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Air handler with communicating AC or HP . . . . . . . . . . . . . . . . . . . . 11
Multi-wire terminal connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DIP-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
DIP-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Variable speed board dip switch locations - heat kit . . . . . . . . . . . . . 17
Duct static measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Drain traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Location of coil trapped and plugged drain connections . . . . . . . . . 22
Wiring diagram - EEV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
List of tables
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Horizontal suspension dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
EEV Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Low voltage connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pushbutton operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Fault codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Fault list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Heat relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Continuous fan switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Comfort setting selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Physical and electrical data - cooling only . . . . . . . . . . . . . . . . . . . . 17
Electrical data - cooling only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Electrical heat: minimum fan CFM for single-phase heat kits . . . . . . 17
Electrical heat: minimum fan CFM for three-phase heat kits . . . . . . 18
Aux heat configuration - stage 1 kW dip switch settings . . . . . . . . . 18
Application factors - rated CFM versus actual CFM . . . . . . . . . . . . . 18
kW and MBH conversions - for total power input requirement . . . . . 18
Electric heat performance data: 208/230-1-60 and 208/230-3-60 . . 18
Electrical data for single source power supply: 208/230-1-60 . . . . . 19
Electrical data for multi-source power supply: 208/230-1-60 . . . . . . 19
Electrical data for single source power supply: 208/230-3-60 . . . . . 20
Electrical data for multi-source power supply: 208/230-3-60 . . . . . . 20
Temporary repair mode cooling airflow data (CFM) . . . . . . . . . . . . . 21
Section I: General
The single piece air handler series provides the flexibility for installation
in any position. This unit may be used for upflow, downflow, horizontal
right, or horizontal left applications.
These units may be located in a closet, utility room, attic, crawl space,
or basement. These versatile models may be used for cooling or heat
pump operation with or without electric heat.
Top or side power and control wiring, color coded leads for control wir-
ing, and electric heaters all combine to make the installation easy and
minimize installation cost.
Electric heat kits are available as field installed accessories. Single-
phase kits are available from 2.5 kW to 25 kW and 208/230 V three-
phase kits are available from 10 kW to 25 kW.
Section II: Safety
This is a safety alert symbol. When you see this symbol on labels
or in manuals, be alert to the potential for personal injury.
Understand and pay particular attention to the signal words DANGER,
WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury .
WARNING indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation, which, if not
avoided may result in minor or moderate injury. It is also used to alert
against unsafe practices and hazards involving only property damage.
WARNING
FIRE OR ELECTRICAL HAZARD
Failure to follow the safety warnings exactly could result in serious
injury, death or property damage. A fire or electrical hazard may result
causing property damage, personal injury or loss of life.
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6284251-UIM-B-0223
2 Johnson Controls Ducted Systems
Safety requirements
1. Failure to carefully read and follow all instructions in this manual
can result in air handler malfunction, death, personal injury, or
property damage.
2. Always install this air handler in accordance with all national and
local building and safety codes and requirements, local plumbing
or wastewater codes, and other applicable codes.
3. Only install this air handler in a location and position specified in the
Unit installation.
4. Do not use the air handler for temporary heating of buildings or
structures under construction.
5. Always install the air handler to operate within the air handler’s
intended maximum outlet air temperature.
6. Clearance from combustible material is provided under Clearances
in Unit installation.
7. The unit rating plate displays the air handler model number. The
unit dimensions for the supply air plenum are provided in Figure 3
and Table 1. Always install the plenum according to the instruc-
tions.
WARNING
The air handler area must not be used as a broom closet or for any
other storage purposes, as a fire hazard may be created. Never store
items such as the following on, near, or in contact with the furnace.
1. Spray or aerosol cans, rags, brooms, dust mops, vacuum clean-
ers or other cleaning tools.
2. Soap powders, bleaches, waxes or other Cleaning compounds;
plastic items or containers; gasoline, kerosene, cigarette lighter
fluid, dry cleaning fluids or other volatile fluid.
3. Paint thinners and other painting compounds.
4. Paper bags, boxes or other paper products.
Never operate the air handler with the blower door removed. To do so
could result in serious personal injury and/or equipment damage.
WARNING
This appliance is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of expe-
rience and knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible
for their safety.
Children should be supervised to ensure that they do not play with the
appliance.
WARNING
Improper installation, adjustment, alteration, or maintenance may cre-
ate a condition where the operation of the product could cause per-
sonal injury or property damage. Refer to this manual for assistance,
or for additional information, consult a qualified contractor, installer, or
service agency.
CAUTION
This product must be installed in strict compliance with the installation
instructions and any applicable local, state, and national codes
including, but not limited to building, electrical, and mechanical codes.
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NOTICE
To ensure a correct match for this indoor product, refer to the current
Tabular Data Sheet for the outdoor equipment selected for the system
application. If the indoor product model is not listed in the Tabular
Data Sheet included with the outdoor unit, to access the current ver-
sion of the Tabular Data Sheet, go to the Residential Equipment &
Supplies section of the Offering Catalog at
www.simplygettingthejobdone.com or scan the QR code provided on
the outdoor unit rating plate.
CAUTION
Do not lift the air handler by the cabinet braces. The cabinet braces
could become disengaged from the cabinet causing the air handler to
fall, potentially causing injury or damaging property. See Figure 1 for
the location of the cabinet braces. Lift the air handler by tightly grip-
ping the casing.
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Figure 1: Return air duct attachment and component location
A1693-001
Horizontal drain pan
Liquid refrigerant line connection
Horizontal drain
3/4 in. National Pipe Thread (NPT)
Primary drain 3/4 in. NPT
Screw
Ductwork
Front view
Blower compartment
Cabinet brace
Coil compartment
(access panel removed)
Primary drain pan
Cabinet brace
Filter door
Screw
Screw
Return air duct
Side view
Vapor refrigerant line connection
Secondary drain upflow 3/4 in. NPT

6284251-UIM-B-0223
Johnson Controls Ducted Systems 3
8. Ensure to maintain clearances for servicing and allow access to the
electric heaters and blower.
9. Verify the unit rating plate and power supply to ensure that the elec-
trical characteristics match.
10. When attaching ductwork with screws, carefully fasten the screws
and keep them within 5/8 in. of the sides and back of the air handler.
11. Install the air handler such that the electrical components are pro-
tected from water.
12. Installing and servicing heating and cooling equipment can be haz-
ardous due to the electrical components. Only trained and licensed
personnel must install, repair, or service heating and cooling equip-
ment. Unlicensed service personnel can perform basic mainte-
nance functions such as cleaning and replacing the air filters. When
working on heating and cooling equipment, the precautions in the
manuals and on the labels attached to the unit and other safety pre-
cautions must be observed as applicable.
13. These instructions cover minimum requirements and conform to
existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especially those who have not kept up with changing residential
and non-HUD modular home construction practices. These instruc-
tions are required as a minimum for a safe installation.
14. These models are not CSA listed or approved for installation into a
HUD-approved modular home or a manufactured (mobile) home.
Inspection
Upon receiving the air handler, check to ensure it is still under pressure.
See Figure 2. Inspect the air handler, including the coil, for possible
damage during transit. If damage is evident, note the extent of the dam-
age on the carrier’s freight bill. A separate request for inspection by the
carrier’s agent must be made in writing. Consult the local distributor for
more information. Check the drain pan for cracks or breakage. Before
installation, check the unit for screws or bolts loosened in transit. There
are no internal shipping or spacer brackets that need removing.
You must verify that all accessories, such as heater kits and coils, are
available. Complete installation of these accessories or field conversion
of the unit before setting the unit in place or connecting any wiring,
ductwork, or piping. C60H models are shipped with a horizontal baffle
plate. Remove and retain this plate for horizontal right application. Dis-
card for all other applications.
CAUTION
These air handlers must be transported and handled in an upright,
upflow position. Failure to do so may result in unit damage and per-
sonal injury. Configuration conversions must be done at the site of
installation.
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Figure 2: Pressure check
A1653-001
Figure 3: Dimensions and duct connection dimensions
A1694-001
Blower compartment
Coil compartment
C
15 in.
1 1/2 in.
Filter access B20 1/2 in.
21 7/16 in.
Drain connections for upflow applications
Refrigerant connections
G
F
A
Service
disconnect panel
Top outlet
dimensions
E
12 3/16 in.
18 5/8 in.
D
Bottom inlet
dimensions

6284251-UIM-B-0223
4 Johnson Controls Ducted Systems
Section III: Unit installation
Unit sizing
1. The size of the unit must be based on an acceptable heat loss or
gain calculation for the structure. Use Air Conditioning Contractors
of America (ACCA) Manual J or another approved method.
2. Only connect the air handler to a duct system that has an external
static pressure within the allowable range.
3. Airflow must be within the minimum and maximum limits approved
for electric heat, indoor coils, and outdoor units.
4. When an air handler is installed so that supply ducts carry air circu-
lated by the air handler to areas outside the space containing the air
handler, the return air is also handled by one or more ducts sealed
to the air handler casing and terminating in the space to be cooled
or heated.
5. Refer to the unit rating plate for the air handler model number and
then see the dimensions page of this manual for supply air plenum
dimensions. The plenum must be installed according to the instruc-
tions.
6. The installer must check available supply power and verify that it is
within the normal operating voltage range for the unit. The accept-
able voltage range for these units is as follows:
Clearances
It is essential to provide the following clearances:
1. Refrigerant piping and connections - minimum 12 in.
2. Maintenance and servicing access - minimum 36 in. from the front
of the unit for blower motor or coil replacement
3. Condensate drain lines routed to clear filter and panel access
4. Filter removal - minimum 36 in.
5. The supply air ductwork connected to this unit is designed for 1 in.
clearance for the first 18 in. of combustible materials if an electric
heat kit accessory is installed.
6. A combustible floor base accessory is available for downflow appli-
cations of this unit, if required by local code.
Location
Location is usually predetermined. Check with the owner’s or dealer’s
installation plans. If location has not been decided, consider the follow-
ing in choosing a suitable location:
1. Select a location with adequate structural support, space for service
access, and clearance for air return and supply duct connections.
2. Do not use hanging brackets to wall mount this single piece air han-
dler unit.
3. Normal operating sound levels may be objectionable if the air han-
dler is placed directly over some rooms such as bedrooms or a
study.
4. Select a location that permits installation of the condensate line to
an open drain or outdoors, allowing condensate to drain away from
the structure.
5. When installing an indoor coil in an attic or above a finished ceiling,
an auxiliary drain pan must be provided under the air handler as is
specified by most local building codes.
6. A sufficient electrical supply must be available.
7. If locating the unit in an area of high humidity, such as an uncondi-
tioned garage or attic, nuisance sweating of the casing may occur.
On these installations, completely seal the unit duct connections
and other openings, and use a wrap of 2 in. fiberglass insulation
with vinyl vapor barrier.
Air handler configuration
These air handler units are supplied ready to install in an upflow or hor-
izontal left position. See Figure 4. If the unit requires either downflow or
horizontal right airflow configurations, the unit must have the coil
assembly repositioned. See Downflow or horizontal right conversion.
Table 1: Dimensions1
Models
Dimensions Wiring knockouts2Refrigerant
connections
line size
A B C D E F G
Height
(in.) Width (in.) Opening widths (in.) Power (in.) Control (in.) Liquid (in.)
Vapor
(in.)
JHVVB24D 49 5/8 17 1/2 10 16 1/2 16 1/2
7/8 (1/2)
1 3/8 (1)
1 23/32 (1 1/4)
7/8 (1/2) 3/8
3/4
JHVVB36D 49 5/8 17 1/2 10 16 1/2 16 1/2
JHVVC36D 51 21 11 1/2 20 20
JHVVC48H 63 21 23 1/2 20 20
7/8
JHVVD48H 63 24 1/2 23 1/2 23 1/2 23 1/2
JHVVC60H 63 21 23 1/2 20 20
JHVVD60H 63 24 1/2 23 1/2 23 1/2 23 1/2
1. All dimensions are in inches.
2. Actual size (conduit size).
NOTICE
Avoid handling aluminum coil components after handling the copper
refrigeration piping or other tubing without first cleaning hands.
Entering air temperature limits
Wet bulb temperature (°F) Dry bulb temperature (°F)
Minimum Maximum Minimum Maximum
57 72 65 95
Air handler voltage Normal operating1 voltage range
1. Rated in accordance with ARI Standard 110, utilization range A.
208/230-1-60 187 V to 253 V
NOTICE
The primary and secondary drain line must be trapped to allow proper
drainage of condensate water. The secondary drain line must be
piped to a location that gives the occupant a visual warning that the
primary drain is clogged. If the secondary drain line is not used, it
must be capped.

6284251-UIM-B-0223
Johnson Controls Ducted Systems 5
Downflow or horizontal right conversion
1. Remove the coil access panel.
2. Slide the coil and drain pan assembly out of the air handler.
3. Turn the air handler cabinet upside down (downflow position).
4. If installing the unit in a horizontal right position, C60H models
require installation of a horizontal baffle plate shipped with the unit.
The horizontal baffle plate must be secured to the coil delta plates.
See Installing a horizontal baffle plate.
5. Slide the coil back into the cabinet.
6. Install the coil access panel. Conversion is now complete.
Installing a horizontal baffle plate
1. With the coil removed from the air handling unit and laying on its
horizontal drain pan, locate the pre-drilled holes in the front and
rear coil delta plates.
2. Insert the horizontal baffle plate into the end of the coil. Insert one end
of the horizontal baffle plate into the top side of the primary drain pan
as shown in Figure 5.
Note: Figure 5 shows the air handling unit in the horizontal left hand
position so that the horizontal baffle plate can be seen. However, the
horizontal baffle plate is for horizontal right hand applications only.
3. Secure the horizontal baffle plate in place with two screws, one in
the front delta plate and one in the rear delta plate. See Figure 5.
Horizontal left applications (all models)
Air handling units are supplied ready to install in a horizontal left posi-
tion. A horizontal drain pan is factory-installed. If you require horizontal
right application, see Downflow or horizontal right conversion before
proceeding.
See Refrigerant line connection and Condensate drain connections for
further installation instructions.
Positioning the unit in horizontal applications
Set the unit so that it is sloped 1/4 in. towards the drain line connection.
Figure 4: Typical installation
NOTICE
Convert the air handler to the required orientation before installation.
You must convert before brazing the refrigerant connections to the
coil.
A1701-001
Upflow Downflow Horizontal right
Horizontal left
Heat kit
Heat kit
Heat kit
Heat kit
Figure 5: Horizontal baffle plate installation
A1706-001
Horizontal baffle plate (fitted with two screws)
Right side view Right side view (exploded)
Left side view Left side view (exploded)
Coil
Horizontal
baffle plate
Primary
drain pan
Front sectional view
Horizontal baffle plate (fitted with two screws)

6284251-UIM-B-0223
6 Johnson Controls Ducted Systems
Section IV: Ductwork and connections
Air supply and return may be handled in one of several ways best
suited to the installation. Upflow, horizontal or downflow applications
may be used.
The vast majority of problems encountered with heating and cooling
systems can be linked to incorrectly designed or installed duct systems.
It is therefore highly important to the success of an installation that the
duct system be correctly designed and installed.
When installing a central air return grille in or near the living space,
design the ductwork so that the grille is not in direct line with the open-
ing in the unit. One or two elbows and acoustical duct liner ensure a qui-
eter system. For operation where the return air duct is short or where
sound may be a problem, use acoustical duct liner inside the duct. Use
flexible duct connectors to minimize the transmission of vibration and
noise into the conditioned space.
Insulation of ductwork is imperative where it runs through an unheated
space during the heating season or through an uncooled space during
the cooling season. Use a vapor barrier to prevent absorption of mois-
ture from the surrounding air into the insulation.
Use a transition to match unit opening to correctly size the supply air
duct. Suspend all ducts using flexible hangers and never fasten directly
to the structure.
Ductwork must be fabricated and installed in accordance with local and
national codes. This includes the standards of the National Fire Protec-
tion Association for Installation of Air-Conditioning and Ventilating Sys-
tems, NFPA No. 90B. If using electric heat, non-flammable material
must be used. Duct systems must be designed in accordance with
ACCA Manual D.
Horizontal suspension
These air handlers may be suspended in horizontal applications. Use
angle steel support brackets with minimum 3/8 in. threaded rods, sup-
porting the unit from the bottom. Attach the threaded rods at the loca-
tions shown in Figure 6, leaving enough clearance between the door
and the rod so that doors can be easily removed for service.
Table 2: Horizontal suspension dimensions
Duct flanges
Duct flanges are integrated into the casing. Fold the flanges into posi-
tion and use screws to anchor the flanges.
WARNING
Do not bring in return air from a location which could introduce haz-
ardous substances into the airflow.
Use 1/2 in. screws to connect ductwork to the cabinet. If pilot holes
are drilled, drill only through the field duct and the unit flange.
CAUTION
This unit is not designed for non-ducted (freeblow) applications. Do
not operate without ductwork attached to the unit.
Never operate the equipment without filters.
CAUTION
Do not lift the air handler by the cabinet brace. The cabinet brace is
held in place by the coil channel. The cabinet brace could become
disengaged from the cabinet causing the air handler to fall, potentially
causing injury or damaging property. See Figure 1 for the location of
the cabinet braces.
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NOTICE
When assembling the support structure, size to provide clearance for
access door removal.
Figure 6: Suspension support locations for horizontal applications
Air handler cabinet size H (in.) X (in.)
B24D, B36D 49 5/8
21 3/4C36D 51
C48H, D48H, C60H, D60H 63
Figure 7: Duct attachment
A1695-001
2 in. 1 1/2 in.
H
1 1/2 in. 1 1/2 in.
H
X
X
Minimum 1 1/2 in. x 1 1/2 in.
(Angle recommended length 26
in. minimum with 2 in. clearance
on both sides of the air handler)
Minimum 3/8 in.
threaded rod
Minimum 1 1/2 in. x 1 1/2 in.
(Angle recommended length 26
in. minimum with 2 in. clearance
on both sides of the air handler)
Minimum 3/8 in.
threaded rod
A1696-001
Duct flanges

6284251-UIM-B-0223
Johnson Controls Ducted Systems 7
Unit connections
There are several ways to handle the supply and return air duct connec-
tions. The location and sizing of the connections depends on the situa-
tion and the method best suited to the installation. Upflow, horizontal or
downflow applications may be used.
Use a transition to match unit opening to correctly size the supply air
duct. See Table 1 for air handler unit inlet and outlet dimensions.
Ductwork that is not designed to match the supply air opening can
cause turbulence inside the plenum. This turbulence can change the
airflow patterns across the electric heater limit switch/switches. If the
factory suggested transition cannot be fabricated, attach a block-off
plate (approximately 8 in. high and running the full width of the plenum)
to the supply opening. See Figure 8. The use of this block-off plate
enables better air circulation across the limit switches.
Air filters
.
Return air filters are required and must be field-supplied. Filtration can
be accomplished external to the unit or the integral filter rack may be
used. A 1 in. filter access rack is built into the unit. Remove the filter
access cover and install the correct size filter. Use a standard 1 in. per-
manent or throw away filter. See Table 11 for filter sizes.
Section V: Coil metering devices
This unit is supplied with a factory installed Electronic Expansion Valve
(EEV). The EEV, the temperature sensor, and the pressure transducer
are factory wired to the control board.
Section VI: Refrigerant line connection
Connect lines as follows:
1. Make suction and liquid line connections outside of the cabinet.
Leave the tubing connection panel attached to the cabinet. Remove
the coil access panel for brazing. The lines are expanded to receive
the field refrigeration piping tubes for most outdoor unit matches.
2. Remove the grommets where the tubes exit the cabinet to prevent
burning them during brazing. In some units, the grommets may be
shipped as loose parts with the unit. See Figure 9.
3. Cut the end of the suction tube using a tube cutter. Place the tube
cutter as close as possible to the end of the tube to allow as much
depth as possible for the connection and brazing of the suction line.
To ensure the suction line fits into the connection, deburr the stub
out (including inner pressure protrusion from cutting).
4. Remove the liquid line copper cap that is soft soldered onto the out-
side of the 3/8 in. stub protruding from the front of the coil cabinet
tubing panel:
a. Screw a sheet metal screw into the center of the cap.
b. Apply a small amount of heat to the cap while pulling on the
screw using slip joint pliers.
Before brazing, connect and apply line power to the field wiring
terminals of the air handling unit and ensure the board is pow-
ered for 60 s. This ensures the EEV control board cycles the
valve to an open position. This allows nitrogen to flow through
the system during brazing.
Figure 8: Ductwork transition
CAUTION
Use 1/2 in. screws to connect ductwork to the unit. Longer screws
may pierce the drain pan and cause leakage. If drilling pilot holes, drill
only though the field duct and the unit bottom duct flange.
CAUTION
Never operate the equipment without filters.
CAUTION
Coil under pressure
Verify that pressure has been released by depressing the schrader
valve core.
A1697-001
Suggested location of block off plateRecommended transition
!
!
!
NOTICE
To prevent moisture and contaminants from entering the system, the
coil should not be open to atmosphere for extended periods of time. If
the coil cannot be brazed into the refrigeration system during a rou-
tine installation period, the ends should be temporarily closed or
plugged. For a short term delay, use masking tape over the ends of
the copper tubing to close the tube from the air. For a longer term
delay, use plugs or caps. There is no need to purge the coil if this pro-
cedure is followed.
CAUTION
The coil is under inert gas pressure. Relieve pressure from the coil by
depressing the Schrader valve core at the end of the suction manifold
stub-out.
CAUTION
Dry nitrogen must always be supplied through the tubing while it is
being brazed, because the temperature required is high enough to
cause oxidation of the copper unless an inert atmosphere is provided.
The flow of dry nitrogen must continue until the joint has cooled.
Always use a pressure regulator and safety valve to insure that only
low pressure dry nitrogen is introduced into the tubing. Only a small
flow is necessary to displace air and prevent oxidation.
NOTICE
Avoid handling aluminum coil components after handling the copper
refrigeration piping or other tubing without first cleaning hands.
NOTICE
Route the refrigerant lines to the coil in a manner that will not obstruct
service access to the coil, air handling system, furnace flue, or filter.
Important:
The EEV in this unit is shipped in the closed position to protect the
valve during transportation.
!
!

6284251-UIM-B-0223
8 Johnson Controls Ducted Systems
5. Insert the liquid and suction lines into the coil connections at the coil
cabinet tubing panel.
6. Wrap a water-soaked rag around the coil connection tubes inside
the cabinet to avoid transferring excess heat to the coil, EEV, and
temperature sensor.
7. Purge the refrigerant lines with dry nitrogen during brazing.
8. Braze the suction and liquid lines, and allow the joints to cool.
9. Secure the sensing bulb and equalizer line capillary tubes with
nylon cable ties to prevent leaks from tubes rubbing.
10. If using a piston, install a Schrader valve core into the suction
header and reinstall the cap.
11. Re-attach the grommets to the lines carefully to prevent air leakage.
In some units, the grommets may be shipped as loose parts with
the unit. See Figure 9.
12. Refer to the outdoor unit Installation Manual and complete evacua-
tion, a leak check, and charging instructions. Check all field brazed
joints and metering device connections.
13. Attach the coil access panel to the cabinet.
14. Ensure the lines are sound isolated by using appropriate hangers
or strapping.
Section VII: Condensate drain connections
Adhere to the following:
• Pitch all drain lines 1/4 in./ft away from the unit drain pan and
make sure that the drain lines are no smaller than the coil drain
connection.
• Route the drain line so that it does not impede access to the coil,
air handling system, or filter and is not exposed to freezing tem-
peratures.
• Instruct the homeowner that the indoor coil drain pan must be
inspected and cleaned regularly to prevent odors and ensure
proper drainage.
• Install the air handling unit pitched slightly toward the drain end.
• Note that you can remove drain plugs using a standard 3/8 in.
drive socket ratchet.
• If the coil has a secondary drain, pipe it to a location that gives
the occupant a visual warning that the primary drain is clogged. If
a secondary drain is not used, you must plug the secondary
drain.
Section VIII: Electric heater installation
If the air handler requires electric heat, install the electric heat kit
according to the installation instructions included with the kit. After
installing the kit, mark the air handler nameplate to designate the heater
kit that was installed. If no heater is installed, mark the name plate
appropriately to indicate that no heat kit is installed.
Use only 8HK heater kits, as listed on the air handler name plate and in
these instructions. Use data from Table 13 to Table 22 for information
on the required minimum motor speed tap to use for heating operation
and the maximum over-current protection device required as listed for
combination of air handler and heater kit.
For all applications, the kits can be installed without modification.
Section IX: Line power connections
Power can be brought into the unit through the supply air end of the unit
(top left when unit is vertical) or the left side panel. Use the hole appro-
priate to the unit’s orientation in each installation to bring the conduit
from the disconnect. The power lead conduit must be terminated at the
electrical control box. See Table 18 to Table 22 and the latest edition of
the National Electric Code, or in Canada the Canadian electrical Code,
and local codes to determine correct wire sizing. To minimize air leak-
age, seal the wiring entry point on the outside of the unit.
All electrical connections to air handlers must be made with copper con-
ductors. Direct connection of aluminum wiring to air handlers is
not approved.
NOTICE
If power cannot be applied to the EEV control board prior to brazing
refrigeration piping, a tool is available to manually operate the EEV.
An EEV manual operating tool can be purchased from Source 1 as
part number S1-02649686000. Six revolutions of the tool opens the
valve fully.
NOTICE
All indoor coil connections are copper-to-copper and must be brazed
with a phosphorous-copper alloy material such as Silfos-5 or equiva-
lent. Do not use soft solder.
Figure 9: Grommets
A1669-003
Grommets
CAUTION
Avoid double trapping.
CAUTION
Threaded drain connections must be hand tightened, plus no more
than one turn.
CAUTION
Do not use PTFE tape, pipe thread compound, or other sealants. Use
of a sealant can cause damage and premature failure of the drain
pan.
NOTICE
In some horizontal applications, the service disconnects on the elec-
tric heat kits must be rotated 180° so the up position of the discon-
nect is the ON position. This service disconnect orientation change is
required by UL 60335-2-40 (in reference to all circuit breakers).
WARNING
Before obtaining access to terminals, all supply circuits must be dis-
connected.
WARNING
A fused disconnect switch must be field provided for the unit to be in
compliance with UL 60335-2-40 Clause 7.12.2.
!
!
!
!
!

6284251-UIM-B-0223
Johnson Controls Ducted Systems 9
If aluminum conductors are present, all applicable local and national
codes must be followed when converting from aluminum to copper con-
ductors prior to connection to the air handler. The chosen conductor
and connections must all meet or exceed the amperage rating of the
overcurrent protector (service disconnect or fuse) in the circuit.
Existing aluminum wire within the structure must be sized correctly for
the application according to the National Electric Code and local codes.
Use caution when sizing aluminum rather than copper conductors, as
aluminum conductors are rated for less current than copper conductors
of the same size.
Section X: Low voltage control connections
The 24 V power supply is provided by an internally wired low voltage
transformer that is standard on all models. If connecting the unit to a
208 V power supply, the low voltage transformer must be rewired to the
208 V tap. See the Wiring diagrams.
Field supplied low voltage wiring can exit the unit through the top right
(when the unit is vertical upflow) or the right side panel. See Figure 3.
Remove the knockout and pierce the foil faced insulation to allow wiring to
pass through. Use as small of a hole as possible to minimize air leakage.
Install a 7/8 in. plastic bushing in the selected hole and keep low voltage
wiring as short as possible inside the control box.
To further minimize air leakage, seal the wiring entry point at the outside
of the unit. Connect the field wiring at the pigtails supplied with the air
handler. See Figure 13 and Figure 14 for low voltage system wiring.
Figure 10: Line power connections
.
A1699-001
3
2
1
GND
SD
SD
SD
GND
GND
CKT
L1
L2
L1
L2 SD
SD
SD
CKT
CKT
2
1
L1
L2
L3
L1
L2
L3
L1
L2
L3
GND
CN
CN
CKT
CKT
SD
SD
GND
GND
L1
L2
L1
L2
L1
L2
Two circuits on 15 kW to 20 kW
Three circuits on 25 kW
Field power wiring
(208/230 V)
Component Codes:
GND - Ground lug
SD - Service disconnect
CKT - Circuit
CN - Wire connector/nut
1 Phase Electric Heat Power Options:
3 Phase Electric Heat Power Options:
Single source power
Power supply Power supply Power supply
Terminal block or service disconnect Jumper bar
Two circuits on 15 kW to 20 kW
Three circuits on 25 kW
Multi-source power with jumper bar Multi-source power
No Electric Heat:
Power supply
Single source power Multi-source power
Power supply
Terminal block or service disconnect
Power supply
NOTICE
All wiring must comply with local and national electrical code require-
ments. Read and heed all unit caution labels.
Figure 11: Control board
A1707-001
Pushbutton
Settings
configuration
EEPLUG
port
Communication
connections
S1 input
HUM output
EAC output
Fuse Status LED
7-segment
display Airflow LED
Aux heat
configuration
Model
configuration
Airflow
configuration
Float
switch
input
Leaving air
temperature
sensor input
Heatkit outputs
Blower motor
connection
Conventional
thermostat
inputs

6284251-UIM-B-0223
10 Johnson Controls Ducted Systems
Figure 12: EEV connectors
A0768-001
1
2
3
4
5
67
8
9
10
11
12
13
14
Table 3: EEV Connectors
Item Input Description Connector use Connection
1 B- RS 485 inverted input
Communication signals
Pin 1
2 C 24 VAC system common Pin 2
3 R 24 VAC system power Pin 3
4 A+ RS 485 input Pin 4
5 PR1 5V VCC pressure transducer
Indoor pressure transducer
Pin 1
6 PR1 0.5 V – 4.5 V pressure transducer signal Pin 2
7 PR1 Common pressure transducer Pin 3
8 T1 10k temperature sensor common Indoor temperature sensor Pin 4
9 T1 Temperature sensor input Pin 5
10 EEV EEV phase A
EEV motor control
Pin 1
11 EEV EEV phase B Pin 2
12 EEV EEV phase C Pin 3
13 EEV EEV phase D Pin 4
14 EEV EEV 12VDC Pin 5
NOTICE
All wiring must comply with local and national electrical code require-
ments. Read and heed all unit caution labels.
It is possible to vary the amount of electric heat turned on during the
defrost cycle of a heat pump. Standard wiring only brings on the first
stage of electric heat during defrost. See Heat output and Table 8 for
additional information on heat during the defrost cycle.

6284251-UIM-B-0223
Johnson Controls Ducted Systems 11
Control wiring using communicating controls
The communicating system consists of several intelligent communicat-
ing components, including the communicating thermostat control
(touch-screen wall thermostat), variable speed air handler, air condi-
tioner or heat pump, that continually communicate with each other
using a four-wire connection called the A-R-C-B bus. Commands, oper-
ating conditions, and other data pass continually between components
over the A-R-C-B bus. See Figure 13. The result is a new level of com-
fort, versatility, and simplicity.
In order to use this air handler in full communications (COMM) mode, it
is essential to install it with the matching touch-screen communicating
control (wall thermostat) and an outdoor variable capacity conditioner or
heat pump with a fully communicating control.
Use the wiring diagram in Figure 13 to connect the air handler control,
touch-screen communicating control (wall thermostat), and communi-
cating outdoor unit. Ensure all of the A+ terminals are connected
together, all of the B- terminals are connected together, all of the C ter-
minals are connected together, and all of the R terminals are connected
together. See Figure 13 and Figure 14. When using a fully communi-
cating system, remove the low voltage signal connector from the control
board at the T3 connection and leave the low voltage wiring in place for
future use. Use the four small screw terminals (ARCB connection) on
the terminal block on the end of the air handler control.
Table 4: Low voltage connections
Wire Colors Signals Comment
R Red 24 VAC power (fused)
G Green Continuous fan operation Fan speed, adjust at CONT FAN dip switch (SW5)
Y/Y2 Yellow Second or full stage compressor operation
Y1 Yellow and Black First stage compressor operation Not used with outdoor units having single-stage compressors.
W2 Brown Second stage heat operation
W1 White First stage heat operation
O/B Orange Reversing valve operation
EAC Field-supplied wiring Electric air cleaner Located on P4 connector. There is 24 VAC output during indoor blower
operation to energize a pilot duty relay for an electronic air cleaner.
HUM Purple Humidity switch input
C (COM) Blue 24 VAC common
S1 Field-supplied wiring Reduce airflow and set S1 functionality Used only with outdoor units with an S1 out.
Note: JHVV models are paired with fully communicating outdoor sections and are to be controlled using a communicating room thermostat wired
into the control boards ARCB connection. The conventional thermostat inputs can be used for temporary unit operation if necessary.
CAUTION
If connecting any field-supplied wiring to the control board, such as
when using the communicating control, float switch, or leaving air
temperature switch, you must route the additional wires through the
hole at the lower right of the control box.
Do not add any additional holes to the control box. After attaching the
additional wires to the board, it is essential to plug the remaining hole
around the wires with the sealant putty supplied or with a suitable
waterproof sealant. Failure to seal this hole may allow moisture to
enter the control box and damage the control board.
Important: Do not place more than one wire under any single com-
munication terminal screw (there are four communication terminal
screws). If more than one wire must be connected to a terminal
screw, attach only the terminal end of a one wire pigtail no longer than
6 in. and use a wire connector to connect the other end of the pigtail
to the other wires. Failure to do this may result in nuisance communi-
cation error faults. See Figure 14.
! Figure 13: Air handler with communicating AC or HP
Figure 14: Multi-wire terminal connection
A+
R
C
B-
A+
R
C
B-
A+
R
C
B-
R
G
Y/Y2
Y1
W2
W1
O
HUM
COM
TOUCH SCREEN
COMMUNICATING
CONTROL
AIR HANDLER
COMMUNICATING
CONTROL
AC/HEAT PUMP
COMMUNICATING
CONTROL
EAC
A0409-001
WIRE
CONNECTOR
THERMOSTAT
TERMINAL
SCREW
NOTE:
Ensure only one wire under
terminal screw.
To connect more than one wire:
A+
R
C
B-
AIR HANDLER
COMMUNICATING
CONTROL BOARD
1. Connect only terminal end of
wire pigtail.
2. Use wire connector to connect
other end of pigtail
to other wires.
A0237-001
OUTDOOR UNIT
INDOOR UNIT

6284251-UIM-B-0223
12 Johnson Controls Ducted Systems
Float switch input
An optional switch may be connected to the FLOAT SWITCH INPUT
terminals on the control board. This feature is only functional when
used with the communicating control. It is intended for use with a
water overflow switch. To enable this feature, see dip switches 7 and 8
in switch bank SW5. An OFF/OFF (0, 0) position ignores this input. If
using a normally closed switch, set these switches in the OFF/ON (0, 1)
position. If using a normally open switch, set these switches in the ON/
OFF (1, 0) position. At the room thermostat system settings menu, the
FLOAT SWITCH setting must be changed from its default (disabled)
setting. If using a normally closed switch, choose Enabled (Open). If
using a normally open switch, choose Enabled (Closed).
When finished installing condensate overflow detection and on a regu-
lar basis after installation, test the detection equipment to ensure cor-
rect operation.
Pushbutton operation
See Table 5 for the control behavior when the pushbutton is pressed.
HUMIDISTAT switch
The HUMIDISTAT switch configures the control to monitor the humidity
switch input. With the switch in the OFF position, the control ignores the
HUM input. With the switch in the ON position, the control monitors the
HUM input to control the blower speed for dehumidification during
cooling operation. For conventionally wired systems, an open-on-rise
humidistat is wired between air handler board R and HUM input to
utilize this feature. The HUM input is strictly for dehumidification during
cooling operation and has no control over the HUM OUT humidifier
connections. To enable this feature for communicating systems, choose
dehumidify with equipment in the service menu dehumidification
setting.
Airflow and comfort setting switches
See Airflow and comfort setting selection.
AC/HP switch
The AC/HP switch configures the control to operate correctly with an air
conditioner (ON position) or heat pump (OFF position). With the switch
in the ON position, the control will treat any Y call as a cooling call only.
With the switch in the OFF position, a Y call is treated as a heat pump.
Status and fault codes
The control includes an LED that displays status and as well as two 7-segment displays to display fault codes. These codes are shown in Table 6.
The control displays the fault codes until power is removed from the control or the fault condition is no longer present.
CAUTION
Failure to test condensate overflow detection equipment could lead to
equipment failure and damage.
!
Table 5: Pushbutton operation
Duration of connections (s) Control behavior with no thermostat signals present Control behavior with thermostat signals present
< 2 Display operational mode (MODEL CONFIG) (5 s) and heat
kit configuration (5 s) Display CFM sent to the indoor blower (5 s)
2 to 6
Display current/stored fault codes if present Bypass ASCD (Reduce timer to zero immediately).
Note: If a fault condition is active, the control continues to
display the active fault. It does not display stored faults until
the active fault is cleared.
Clear active faults except fault codes 01, 02, 03, and
04.
Clear active faults except fault codes 01, 02, 03, and 04.
> 6
Set model configuration, but only if the model configuration
error fault is currently active and the fault condition is not
presently active.
Bypass ASCD (reduce the timer to zero immediately).
Set heat kit configuration, but only if the heat kit configura-
tion error fault is currently active and the fault condition is
not presently active.
Set S1 configuration, but only if 24 V is applied to the S1
terminal and a fault condition is not presently active.
The below action only occurs if the above faults (model con-
fig. or heat kit config.) are not active when the pushbutton is
held for > 6 s.
Clear fault storage. If there is an active fault present, hold
the pushbutton twice: once to clear the active fault and once
to clear fault storage.
Disable S1 functionality, but only if no voltage is applied to
the S1 terminal and a fault condition is not presently active.
> 10 The display toggles between the control software version (5
s) and the tabular/model data software version (5 s).
If an active fault is present, continue to energize the 7-
segment displays with the active fault codes.

6284251-UIM-B-0223
Johnson Controls Ducted Systems 13
Table 6: Fault codes
Fault description Status LED
(AN2)
7-Segment
Display 1
(DISP1)
7-Segment
Display 2
(DISP2)
No power to control OFF — —
Control normal operation – no call for operation (standby mode) 2 s ON/2 s OFF
(heartbeat) — —
Control normal operation – in ASCD period 0.1 s ON/0.1 s OFF d 5, 4, 3, 2, 1
Control normal operation – call for fan only and no active fault codes ON F A
Control normal operation – call for first-stage cooling compressor and no active fault codes ON C 1
Control normal operation – call for second-stage cooling compressor and no active fault codes ON C 2
Max cool – no faults active ON C 3
Control normal operation – call for first-stage heating compressor and no active fault codes ON H 1
Control normal operation – call for second-stage heating compressor and no active fault codes ON H 2
Max heat – no faults active ON H 3
Auxiliary heat 1 – call for first-stage auxiliary heating and no active fault codes ON A 1
Auxiliary heat 2 – call for second-stage auxiliary heating and no active fault codes ON A 2
Stage 1 emergency heat (W without Y) – no faults active ON E 1
Stage 2 emergency heat (W without Y) – no faults active ON E 2
Float Switch Active – no faults active ON f l
Software update – control board ON b 1
Software update – EE plug ON b 2
Software version – control board ON — 1 to 9
Software version – EE plug ON — 1 to 9
Any fault or event code that would prevent the equipment from running See fault codes — —
No fault codes in memory Two flashes — —
Fault code memory cleared Three flashes — —
Table 7: Fault list
Fault/status Display 1 Display 2 Simplified Description
Internal control fault 0 A Control failure The control failed and must be replaced.
Model configuration changed 0 1
Configuration
faults
The dip switches on model configuration do not match the stored model on the
control. Hold the push button, with no calls to the control, for 6 s to 9 s, to clear and
set the new model. If this error shows, 0 2 also usually show.
Blower match error 0 2
There is a mismatch between the motor and the stored model on the control. A few
different things could cause this:
1. The motor is not compatible with the selected model. Change the model under
model configuration.
2. The motor is not communicating with the control - accompanied by 0 6. Check
your wiring, cycle power on the control, and the motor.
3. The model configuration is not set - accompanied by 0 1. Hold the pushbutton
for 6 s to 9 s. Ensure there are no calls to the control or the model does not
set.
Heat kit configuration error 0 3
There is a mismatch between the heat kit selection dip switches and the stored
model on the control. A few different things could cause this:
1. The dip switches on heat kit selection do not match the stored heat kit on the
control. Hold the pushbutton, with no calls to the control, for 6 s to 9 s, to clear
and set the new model.
2. The heat kit selected under heat kit selection does not match the model stored
in the control. Check your model configuration and your heat kit configuration.
Heat kit staging configuration
changed 0 4
The dip switches on stage 1 kW do not match the stored information on the con-
trol. Hold the pushbutton, with no calls to the control, for 6 s to 9 s, to clear and set
the new model.
Comm lost with HVAC system
master 0 5
Comm lost
The control is no longer communicating with the HVAC system. If the system is
conventional, cycle power. If the system is communication, ensure the main ther-
mostat is powered, check the wiring, and check the main thermostat for faults.
Comm lost with motor 0 6
Motor con-
nection lost
The control is no longer communicating with the ClimateTalk blower. Check the
wiring between the motor and the control, and check that the motor is getting
power.
Continued on next page

6284251-UIM-B-0223
14 Johnson Controls Ducted Systems
Low voltage (<19 VAC) 0 7
Low voltage
error
The control is experiencing a low voltage condition. It continues with outputs
already engaged, but does not engage new outputs. Check for damaged wiring
and brown-out conditions.
Low voltage (<16 VAC) 0 8
The control is experiencing a very low voltage condition. The control no longer
keeps outputs engaged and shuts down the system. Check for damaged wiring
and brown-out conditions. Lower voltage means the control does not turn on.
Leaving air temperature sensor
failure (open) 1 3
Leaving air
temperature
sensor error
The leaving air sensor is open. Check the wiring and check for a damaged sensor.
Leaving air temperature sensor
failure (short) 1 4 The leaving air sensor is shorted. Check the wiring and check for a damaged sen-
sor.
Low leaving air temperature in
cooling 1 5
The leaving air temperature sensor is reporting lower temperatures that may
cause condensate in the ductwork and cause damage to equipment. A few differ-
ent things could cause this:
1. Check for a blockage in the ductwork.
2. Verify that the airflow for the size of the outdoor unit is correct.
3. Verify that the outdoor unit is the correct size for the application.
4. Verify there is nothing obstructing the fan.
High leaving air temperature in
heating 1 6
The leaving air temperature sensor is reporting higher temperatures that may
cause damage to equipment. A few different things could cause this:
1. Check for a blockage in the ductwork.
2. Verify that the airflow for the size of the outdoor unit is correct.
3. Verify that the heat kit is the correct size for the application.
4. Verify there is nothing obstructing the fan.
High leaving Air temperature in
heating (heat pump mode) 1 7
Leaving air
temperature
sensor error
The leaving air temperature sensor is reporting higher temperatures that may
cause damage to equipment. A few different things could cause this:
1. Check for a blockage in the ductwork.
2. Verify that the airflow for the size of the outdoor unit is correct.
3. Verify that the outdoor unit is the correct size for the application.
4. Verify that the heat kit is the correct size for the application.
5. Verify there is nothing obstructing the fan.
Float switch fault activated 1 8
Float switch
fault
The float switch tripped. Check there is not excess water in the drain pan, the drain
pan is not clogged, and the float switch is operating correctly.
Call for reversing valve while in
air conditioner mode 2 2
Incorrect
wiring
The control senses 24 VAC on the O terminal.
• If the outdoor unit is a non-HMH7 heat pump, make sure the AC/HP switch
is correctly set.
• If the outdoor unit is an Air Conditioner, check the wiring.
• If the outdoor unit is an HMH7 heat pump, ensure that the control is in S1
functionality. See the S1 Functionality section for more information.
Call for cooling and indoor heat-
ing at the same time 2 4
The control senses 24 VAC on the Y terminal and the W terminal while in air condi-
tioner mode.
• If the outdoor unit is a non-HMH7 heat pump, change the AC/HP switch.
• If the outdoor unit is an air conditioner, check the wiring to the conventional
inputs.
• If the outdoor unit is an HMH7 heat pump, ensure that the control is in S1
functionality. See the S1 Functionality section for more information.
Call for reversing valve and
heating at the same time 2 5
The control senses 24 VAC on the W terminal and the O terminal in heat pump
mode. Check the wiring to the conventional inputs.
• If the outdoor unit is an HMH7 heat pump, ensure that the control is in S1
functionality. See the S1 Functionality section for more information.
Fan running without a call 3 0
Fan faults
The control senses the motor is moving without command.
1. Check the wiring between the motor and the control.
2. Cycle power on both the motor and the control.
3. Verify there is nothing moving the blower besides the motor attached to this air
handler control.
Fan failure 3 1
The control senses the motor is not moving with an active demand.
1. Check the motor has sufficient power.
2. Check the wiring between the motor and the control.
3. Verify nothing is blocking the blower fan.
4. Cycle power to both the motor and the control.
Continued on next page
Table 7: Fault list (continued)
Fault/status Display 1 Display 2 Simplified Description

6284251-UIM-B-0223
Johnson Controls Ducted Systems 15
HUM OUT output
The HUM OUT output drives an external relay or solenoid (24 VAC coil) to
control a humidifier. The output energizes when the control has a thermo-
stat call for heating (heat pump or electric heat).
Heat output
The control connects to the heater relays using pins four, five, and six of
connector P3. The relay outputs are 24 VAC.
The control energizes the heat relays as shown in Table 8.
Depending on the heat kit installed in the air handler, the control provides
the flexibility to configure the amount of heat delivered with the first stage
heating call. As an example, when the control’s W1 input is connected to
the room thermostat’s first stage heat signal, a call for first stage heat ener-
gizes one heating element (HT1). If the control’s W2 input is connected to
the room thermostat’s first stage heat signal, a call for first stage heat ener-
gizes one heating element (HT2). With either configuration, the control
energizes two heating elements (HT1 and HT2) when it receives a first and
second stage heat input from the thermostat.
Heat kit outputs based on thermostat inputs can be configured differently if
required, using the stage 1 kW dip switches located in the SW3 switch
bank. With the switches in 00 (OFF, OFF) or 01 (OFF, ON), W1 input = HT1
output. If the switches are in the 10 (ON, OFF) position, W1 input = HT2
output. If the switches are in the 11 (ON, ON) position, W1 input = HT1 and
HT2 output. See Table 15 for switch settings. Change these heat kit staging
settings on the communicating room thermostat unless temporarily using a
conventional room thermostat.
Fan - high voltage failure
3 2
Fan faults
The control senses the motor is receiving too high voltage.
1. Check the voltage going to the blower motor.
2. Check the wiring of power to the motor.
3. Cycle power to the motor and to the control.
4. Verify nothing is blocking the blower.
Fan - low voltage failure
3 3
The control senses the motor is receiving too low voltage.
1. Check the voltage going to the blower motor.
2. Check the wiring of power to the motor.
3. Cycle power to the motor and to the control.
Fan - high current failure 3 4
The control senses the motor is receiving too high current.
1. Check the power going to the blower motor.
2. Check the wiring of power to the motor.
3. Cycle power to the motor and to the control.
4. Verify nothing is blocking the blower.
Fan - low current failure 3 5
The control senses the motor is receiving too low current.
1. Check the power going to the blower motor.
2. Check the wiring of power to the motor.
3. Cycle power to the motor and to the control.
Fan - high temperature failure 3 6
The control senses the motor’s internal temperature is too high.
1. Verify the airflow set on the air handler control is correct for the air handler
model, heat kit, and staging.
2. Ensure nothing is blocking the blower.
3. Cycle power on the motor and the control.
Fan - low temperature failure 3 7
The control senses the motor’s internal temperature is too low.
1. Verify the airflow set on the air handler control is correct for the air handler
model, heat kit, and staging.
2. Ensure nothing is blocking the blower.
3. Cycle power on the motor and the control.
Fan - lost rotor 3 8
The control senses the motor has a lost rotor fault.
1. Ensure nothing is blocking the blower.
2. Cycle power on the motor and the control.
Fan - incomplete parameter 3 9
The control delivers incomplete data to the motor.
1. Check wiring between the control and the motor.
2. Check the EE plug is firmly seated into the control.
3. If the issue persists, cycle power to the control and the motor.
Fan - undesired parameter
change 4 0
1. The control delivers a parameter change at the wrong time to the motor.
Check wiring between the control and the motor.
2. Check the EE plug is firmly seated into the control.
3. If the issue persists, cycle power to the control and the motor.
Fan - fault limit lockout 4 1
The motor hits the fault limit and no longer runs.
1. Check the fault list on the control and troubleshoot those faults.
2. When these faults have been checked, cycle power to the motor and control.
Table 7: Fault list (continued)
Fault/status Display 1 Display 2 Simplified Description
Table 8: Heat relays
Input Heat relay output
W1 HT1
W2 HT2
W1 and W2 HT1 and HT2

6284251-UIM-B-0223
16 Johnson Controls Ducted Systems
Wiring related faults
If the control receives a simultaneous call for electric heating and cooling
(fault code 24), the control locks out and does not condition.
Section XI: Airflow and comfort setting
selection
Model configuration
The six model configuration switches come factory-set in the 0 (OFF)
position. The unit model is programmed into the control board at the fac-
tory. If the model configuration switches get changed inadvertently from
the factory (OFF) position to a different position, you must set the unit
model configuration. See Figure XX and change the model configuration
switches to the positions matching the air handler model shown on the
unit rating plate. Apply power to the equipment and hold the control push
button down for 6 s to 9 s. There must be no active thermostat calls while
the model configuration is being set or the change does not save.
Airflow selection
When not using communicating functionality, you must set the airflow and
comfort setting selection switches correctly at the time of installation for
correct system operation. Place switches in the correct locations based
on the information shown in Table 23. An example of switch positions is
shown below in Figure 16. 0 indicates the OFF position and 1 indicates
the ON position. The airflow configuration switches are located in the
SW4 switch bank.
Inputs to the air handler control board pass to the motor, which deter-
mines the target CFM to deliver. The following inputs produce the CFM
shown in the appropriate table and selected tap settings.
These variable speed air handlers are designed to deliver constant airflow
(CFM) regardless of the external static pressure (ESP) in the ductwork.
Therefore, if too many supply registers are closed, a filter becomes
clogged, or there is a restriction in the ductwork, the motor automatically
operates at a higher speed to compensate for the higher ESP. This may
result in a higher operating sound level and motor damage.
Setting cooling or heat pump heating airflow:
Refer to the outdoor unit Technical Guide for the appropriate airflow with
the matching indoor coil. See Table 23 for the possible high speed cooling
and heat pump heating airflow selections.
Find the appropriate system airflow in Table 23 for the installed air han-
dler model and outdoor unit. LOW COOL and HIGH COOL each have
three switch positions to set.
Set LOW COOL on switches 3, 4, and 5 on the SW4 switch bank. Set
HIGH COOL on switches 6, 7, and 8 on the SW4 switch bank. The control
is factory set for HP applications. For AC applications, change the AC/HP
dip switch located in the SW5 switch bank to the 1 (ON) position.
Setting continuous fan airflow:
The CONT FAN switches can be adjusted to increase airflow during a fan-
only call. See Table 9, which shows values as a percentage of maximum
airflow.
Setting electric heat kit airflow:
The blower speed required for first and second stage electric heat is dif-
ferent from cooling or heat pump heating. See Table 13 and Table 14 for
minimum required airflow based on the installed heat-kit accessory and its
switch positions. Each heat-kit selection has six different switch positions
to set.
The first two switch settings are switches 1 and 2, listed as HEAT in the
airflow configuration SW4 switch bank. The next four switch settings are
switches 3, 4, 5, and 6, listed as HEATKIT SELECTION in the aux heat
configuration SW3 switch bank. See Figure 27 for the location of these
switches. Change the switch positions according to the unit model and
accessory heat kit installed, where 0 = OFF and 1 = ON.
Blower ramp-up/ramp-down:
To minimize the sound made by the blower when it speeds up or slows
down, the blower slowly ramps up or down from one speed to another.
Changes in blower speed during AC or heat pump heating can take up to
30 s. Changes in blower speed during electric resistance heating can take
up to 15 s.
Figure 15: DIP switch settings by model
Figure 16: DIP-10
A1862-002
JHVVB24D
JHVVB36D
JHVVC36D
JHVVC48H / JHVVC60H
JHVVD48H / JHVVD60H
ON
DIP Switch example: 0101000110
12345678910
A1708-001
NOTICE
Incorrect airflow and comfort settings may result in decreased system
efficiency and performance.
Figure 17: DIP-8
Table 9: Continuous fan switches
CONT FAN % of maximum airflow
00 40
01 60
10 80
11 100
ON
DIP Switch example: 01010001
12345678
A1709-001

6284251-UIM-B-0223
Johnson Controls Ducted Systems 17
Comfort settings
Normal
The normal setting provides a ramp-up from zero airflow to full capacity
and a ramp-down from full capacity back to zero airflow.
Humid
The humid setting is best suited for installations where the humidity is fre-
quently very high during cooling season. On a call for cooling, the blower
ramps up to 50% of full capacity and stays there for 2 min, then ramps up
to 82% of full capacity and stays there for 5 min, and then ramps up to full
capacity, where it stays until the wall thermostat setpoint is reached.
Dry
The dry setting is best suited to locations where excessive humidity is not
generally a problem, where the summer months are usually dry. On a call
for cooling the motor ramps up to full capacity and stays there until the
thermostat setpoint is reached. At the end of the cooling cycle, the blower
ramps down to 50% of full capacity, where it stays for 60 s, then ramps
down to zero.
Temperate
The temperate setting is best suited for most locations, where neither
excessive humidity nor extremely dry conditions are the norm. On a call
for cooling, the motor ramps up to 63% of full capacity and stays there for
90 s, then ramps up to full capacity. At the end of the cooling cycle, the
motor ramps down to 63% of full capacity and stays there for 30 s, then
ramps down to zero.
Section XII: Unit data
0
Table 10: Comfort setting selection
Delay tap Comfort setting
A = 00 Normal
B = 01 Humid
C = 10 Dry
D = 11 Temperate
Table 11: Physical and electrical data - cooling only
Models B24D B36D C36D C48H D48H C60H D60H
Blower - diameter x width (in.) 11 x 8 11 x 8 11 x 10 11 x 10 11 x 11 11 x 10 11 x 11
Motor HP 1/3 HP 1/2 HP 1/2 HP 1 HP 3/4 HP 1 HP 3/4 HP
Nominal RPM 1050 1050 1050 1050 1050 1050 1050
Voltage (V) 208/230 208/230 208/230 208/230 208/230 208/230 208/230
Full load amps at 230 V (A) 2.6 3.8 3.8 7.0 5.4 7.0 5.4
Filter1Type Disposable or cleanable
Size (in.) 16 x 20 x1 16 x 20 x1 20 x 20 x 1 20 x 20 x 1 23 x 20 x 1 20 x 20 x 1 23 x 20 x 1
Shipping/operating weight (lb) 110/102 110/102 126/116 157/145 162/150 157/145 162/150
1. Field-supplied
Table 12: Electrical data - cooling only
Models Motor FLA1
1. FLA = Full Load Amps
Minimum circuit ampacity
(A) MOP2
2. MOP = Maximum Overcurrent Protection device; must be HACR type circuit
breaker or time delay fuse. Refer to the latest edition of the National Electric Code or
in Canada the Canadian electrical Code and local codes to determine correct wire
sizing.
B24D 2.6 3.3 15
B36D/C36D 3.8 4.8 15
C48H/C60H 5.4 6.8 15
D48H/D60H 7 8.8 15
Figure 18: Variable speed board dip switch locations - heat kit
A1731-001
Airflow configuration
Heatkit selection
Table 13: Electrical heat: minimum fan CFM for single-phase heat kits
Heater kit models1,2 Nominal kW
at 240 V
Airflow configuration
heat dip switch
setting*
Aux heat configuration
heat kit selection dip
switch setting
Air handler models (CFM3)
B24D B36D C36D C48H D48H C60H D60H
8HK(0,1)6500206 2.4 00 0001 650 625 825 825 825 825 825
8HK(0,1)6500506 4.8 00 0010 650 650 825 825 825 825 825
8HK(0,1)6500806 7.7 00 0011 800 750 1100 1100 1150 1100 1150
8HK(0,1)6501006 9.6 00 0100 — 750 1100 1100 1325 1100 1325
8HK(1,2)6501506 14.4 00 0101 — 650, 975 825,
1100
825,
1100
825,
1575
825,
1100
825,
1575
Continued on next page

6284251-UIM-B-0223
18 Johnson Controls Ducted Systems
8HK(1,2)6502006 19.2 00 0110 — — 1100,
1300
1100,
1300
1325,
1575
1100,
1300
1325,
1575
8HK(1,2)6502506 24 00 0111 ————1325,
1650 —1325,
1650
1. (0,1) - 0 = no service disconnect or 1 = with service disconnect.
2. (1,2) - 1 = with service disconnect, no breaker jumper bar or 2 = with service disconnect and breaker jumper bar.
3. For minimum fan CFM, if there are two values present, the first value is low-stage CFM (W1) and the second value is full-stage CFM (W1+W2). If higher kW/CFM is
needed for low-stage, see Table 15 and the heat output section of this manual.
* To increase airflow by approximately 20%, adjust the HEAT switches 1 and 2, located in the airflow configuration SW4 switch bank, from 00 to 01.
Table 13: Electrical heat: minimum fan CFM for single-phase heat kits (continued)
Heater kit models1,2 Nominal kW
at 240 V
Airflow configuration
heat dip switch
setting*
Aux heat configuration
heat kit selection dip
switch setting
Air handler models (CFM3)
B24D B36D C36D C48H D48H C60H D60H
Table 14: Electrical heat: minimum fan CFM for three-phase heat kits
Heater kit models1,2 Nominal kW
at 240 V
Airflow configuration
heat dip switch setting*
Aux heat configuration
heat kit selection dip
switch setting
Air handler models (CFM3)
B36D C36D C48H D48H C60H D60H
8HK06501025 9.6 00 1000 1150 1150 1150 1500 1150 1500
8HK06501525 14.4 00 1001 1150 1150 1150 1575 1150 1575
8HK16502025 19.2 00 1010 1150,
1150
1150,
1300
1150,
1300
1500,
1575
1150,
1300
1500,
1575
8HK16502525 24 00 1011 — — — 1575,
1650 —1575, 1650
1. (0,1) - 0 = no service disconnect or 1 = with service disconnect.
2. (1,2) - 1 = with service disconnect, no breaker jumper bar or 2 = with service disconnect and breaker jumper bar.
3. For minimum fan CFM, if there are two values present, the first value is low-stage CFM (W1) and the second value is full-stage CFM (W1+W2). If higher kW/CFM is
needed for low-stage, see Table 15 and the heat output section of this manual.
* To increase airflow by approximately 20%, adjust the HEAT switches 1 and 2, located in the airflow configuration SW4 switch bank, from 00 to 01.
Table 15: Aux heat configuration - stage 1 kW dip switch settings
W1 = W1 00, 01
W1 = W2 10
W1 = W1 + W2 11
Table 16: Application factors - rated CFM versus actual CFM
% of rated airflow (CFM) 80 90 100 110 120
Capacity factor 0.96 0.98 1.00 1.02 1.03
Table 17: kW and MBH conversions - for total power input requirement
For a power distribution voltage that is different from the provided nominal voltage, multiply the kW and MBH data from Table 18 by the conversion
factor in the following table.
Distribution power (V) Nominal voltage (V) Conversion factor
208 240 0.75
220 240 0.84
230 240 0.92
Table 18: Electric heat performance data: 208/230-1-60 and 208/230-3-60
Heater
models1,2
Nominal kW
at 240 V
Total heat 3kW staging
kW MBH W1 only W1 and W2
208 V 230 V 208 V 230 V 208 V 230 V 208 V 230 V
Single-phase
8HK(0,1)6500206 2.4 1.8 2.2 6.2 7.5 1.8 2.2 1.8 2.2
8HK(0,1)6500506 4.8 3.6 4.4 12.3 15 3.6 4.4 3.6 4.4
8HK(0,1)6500806 7.7 5.8 7.1 19.7 24.1 5.8 7.1 5.8 7.1
8HK(0,1)6501006 9.6 7.2 8.8 24.6 30.1 7.2 8.8 7.2 8.8
8HK(1,2)6501506 14.4 10.8 13.2 36.9 45.1 3.6 4.4 10.8 13.2
8HK(1,2)6502006 19.2 14.4 17.6 49.2 60.2 7.2 8.8 14.4 17.6
8HK(1,2)6502506 24 18 22 61.5 75.2 7.2 8.8 18 22
Continued on next page

6284251-UIM-B-0223
Johnson Controls Ducted Systems 19
Three-phase
8HK06501025 9.6 7.2 8.8 24.6 30.1 7.2 8.8 7.2 8.8
8HK06501525 14.4 10.8 13.2 36.9 45.1 10.8 13.2 10.8 13.2
8HK16502025 19.2 14.4 17.6 49.2 60.2 7.2 8.8 14.4 17.6
8HK16502525 24 18 22 61.5 75.2 9 11 18 22
1. (0,1) - 0 = no service disconnect or 1 = with service disconnect.
2. (1,2) - 1 = with service disconnect, no breaker jumper bar or 2 = with service disconnect and breaker jumper bar.
3. For different power distributions, see Table 17.
Table 19: Electrical data for single source power supply: 208/230-1-60
Air handler models Heater models1,2
1. (0,1) - 0 = no service disconnect or 1 = with service disconnect.
2. (1,2) - 1 = with service disconnect, no breaker jumper bar or 2 = with service disconnect and breaker jumper bar.
Heater
amps (A)
at 240 V
Field wiring
Minimum circuit ampacity (A) MOP3 (A)
3. MOP = Maximum Overcurrent Protection device; must be HACR type circuit breaker or time delay fuse. Refer to the latest edition of the National Electric Code or in
Canada the Canadian electrical Code and local codes to determine correct wire sizing.
208 V 230 V 208 V 230 V
B24D
8HK(0,1)6500206 10 14.1 15.2 15 20
8HK(0,1)6500506 20 24.9 27.2 25 30
8HK(0,1)6500806 32 38.1 41.8 40 45
8HK(0,1)6501006 40 46.5 51.1 50 60
8HK(1,2)6501506 60 68.2 75.0 70 80
B36D
8HK(0,1)6500206 10 15.6 16.7 20 20
8HK(0,1)6500506 20 26.4 28.7 30 30
8HK(0,1)6500806 32 39.6 43.3 40 45
8HK(0,1)6501006 40 48.0 52.6 50 60
8HK(1,2)6501506 60 69.7 76.5 70 80
8HK(1,2)6502006 80 91.3 100.4 100 110
C36D
8HK(0,1)6500206 10 15.6 16.7 20 20
8HK(0,1)6500506 20 26.4 28.7 30 30
8HK(0,1)6500806 32 39.6 43.3 40 45
8HK(0,1)6501006 40 48.0 52.6 50 60
8HK(1,2)6501506 60 69.7 76.5 70 80
8HK(1,2)6502006 80 91.3 100.4 100 110
C48H
8HK(0,1)6500206 10 19.6 20.7 20 25
8HK(0,1)6500506 20 30.4 32.7 35 35
8HK(0,1)6500806 32 43.6 47.3 45 50
8HK(0,1)6501006 40 52.0 56.6 60 60
8HK(1,2)6501506 60 73.7 80.5 80 90
8HK(1,2)6502006 80 95.3 104.4 100 110
C60H
8HK(0,1)6500206 10 19.6 20.7 20 25
8HK(0,1)6500506 20 30.4 32.7 35 35
8HK(0,1)6500806 32 43.6 47.3 45 50
8HK(0,1)6501006 40 52.0 56.6 60 60
8HK(1,2)6501506 60 73.7 80.5 80 90
8HK(1,2)6502006 80 95.3 104.4 100 110
D60H
8HK(0,1)6500206 10 17.6 18.7 20 20
8HK(0,1)6500506 20 28.4 30.7 30 35
8HK(0,1)6500806 32 41.6 45.3 45 50
8HK(0,1)6501006 40 50.0 54.6 60 60
8HK(1,2)6501506 60 71.7 78.5 80 80
8HK(1,2)6502006 80 93.3 102.4 100 110
8HK(1,2)6502506 100 114.9 126.3 125 150
Table 18: Electric heat performance data: 208/230-1-60 and 208/230-3-60 (continued)
Heater
models1,2
Nominal kW
at 240 V
Total heat 3kW staging
kW MBH W1 only W1 and W2
208 V 230 V 208 V 230 V 208 V 230 V 208 V 230 V

6284251-UIM-B-0223
20 Johnson Controls Ducted Systems
Table 20: Electrical data for multi-source power supply: 208/230-1-60
Air
handlers
models
Heater
models1
Heater
amps (A)
at 240 V
Minimum circuit ampacity (A) MOP2 (A)
208 V 230 V 208 V 230 V
Circuit Circuit
First3Second Third First3Second Third First3Second Third First3Second Third
B36D 8HK16501506 60 26.2 43.5 — 28.4 48.1 — 30 45 — 30 50 —
C36D 8HK16501506 60 26.2 43.5 — 28.4 48.1 — 30 45 — 30 50 —
8HK16502006 80 48.0 43.3 — 52.6 47.8 — 50 45 — 60 50 —
C48H 8HK16501506 60 30.2 43.5 — 32.4 48.1 — 35 45 — 35 50 —
8HK16502006 80 52.0 43.3 — 56.6 47.8 — 60 45 — 60 50 —
D48H
8HK16501506 60 28.2 43.5 — 30.4 48.1 — 30 45 — 35 50 —
8HK16502006 80 50.0 43.3 — 54.6 47.8 — 60 45 — 60 50 —
8HK16502506 100 50.0 43.3 21.6 54.6 47.8 23.9 60 45 25 60 50 25
C60H 8HK16501506 60 30.2 43.5 — 32.4 48.1 — 35 45 — 35 50 —
8HK16502006 80 52.0 43.3 — 56.6 47.8 — 60 45 — 60 50 —
D60H
8HK16501506 60 28.2 43.5 — 30.4 48.1 — 30 45 — 35 50 —
8HK16502006 80 50.0 43.3 — 54.6 47.8 — 60 45 — 60 50 —
8HK16502506 100 50.0 43.3 21.6 54.6 47.8 23.9 60 45 25 60 50 25
1. 8HK1 = with service disconnect, no breaker jumper bar
2. MOP = Maximum Overcurrent Protection device; must be HACR type circuit breaker or time delay fuse. The first circuit includes blower motor amps. Refer to the lat-
est edition of the National Electric Code or in Canada the Canadian electrical Code and local codes to determine correct wire sizing.
Table 21: Electrical data for single source power supply: 208/230-3-60
Air handler models Heater models1
Heater
amps (A)
at 240 V
Field wiring
Minimum circuit ampacity (A) MOP2 (A)
208 V 230 V 208 V 230 V
B36D 8HK06501025 23.1 29.7 32.4 30 35
8HK06501525 34.6 42.2 46.2 45 50
C36D
8HK06501025 23.1 29.7 32.4 30 35
8HK06501525 34.6 42.2 46.2 45 50
8HK06502025 46.2 54.7 60.0 60 60
C48H
8HK06501025 23.1 33.7 36.4 35 40
8HK06501525 34.6 46.2 50.2 50 60
8HK06502025 46.2 58.7 64.0 60 70
D48H
8HK06501025 23.1 31.7 34.4 35 35
8HK06501525 34.6 44.2 48.2 45 50
8HK06502025 46.2 56.7 62.0 60 70
8HK06502525 57.7 69.2 75.8 70 80
C60H
8HK06501025 23.1 33.7 36.4 35 40
8HK06501525 34.6 46.2 50.2 50 60
8HK06502025 46.2 58.7 64.0 60 70
D60H
8HK06501025 23.1 31.7 34.4 35 35
8HK06501525 34.6 44.2 48.2 45 50
8HK06502025 46.2 56.7 62.0 60 70
8HK06502525 57.7 69.2 75.8 70 80
1. 0 = no service disconnect or 1 = with service disconnect. The 20 kW and 25 kW heater models (8HK16502025 and 8HK16502525) come with service disconnects
standard. Single source power MCA and MOP requirements are given here only for reference if used with field installed single point power modification.
2. MOP = Maximum overcurrent protection device; must be HACR type circuit breaker or time delay fuse. The first circuit includes blower motor amps. Refer to the lat-
est edition of the National Electric Code or in Canada the Canadian electrical Code and local codes to determine correct wire sizing.
Table 22: Electrical data for multi-source power supply: 208/230-3-60
Air handlers
models
Heater
models1
Heater amps (A)
at 240V
Minimum circuit ampacity (A) MOP2 (A)
208V 230V 208V 230V
Circuit Circuit
First2Second First2Second First2Second First2Second
C36D 8HK16502025 46.2 29.7 25.0 32.4 27.6 30 25 35 30
C48H 8HK16502025 46.2 33.7 25.0 36.4 27.6 35 25 40 30