Johnson Controls HMH7 Series Bedienungsanleitung
Johnson Controls Ducted Systems
Installation Manual: HMH7 Series - 17
SEER Horizontal Discharge Modulating
Heat Pump
York International Corporation, 5005 York
Drive, Norman, OK 73069
2021-02-03
6046972-UIM-A-0221
Supersedes: Nothing
A
2 Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump
Johnson Controls Ducted Systems
Contents
ContentsGeneral.................................................................................... 5
Safety....................................................................................... 5
Inspection......................................................................... 5
Limitations........................................................................ 6
Piping considerations...................................................... 6
Unit installation...................................................................... 8
Transportation and handling......................................... 8
Selecting a location for installation............................... 8
Installing the drain elbow and drain hose.................... 9
Installing the outdoor unit............................................ 10
Affixing the brand label................................................. 10
Precautions for brazing of lines................................... 11
Connecting the refrigerant lines.................................. 11
Refrigerant charging..................................................... 12
Electrical connections.......................................................... 13
Connecting HMH72B24 and HMH72B36 wiring......... 15
Connecting HMH72B48 and HMH72B60 wiring......... 16
Electrical data................................................................. 17
Performing a test run.................................................... 17
Technical information.......................................................... 18
Refrigerant cycle............................................................ 18
Wiring diagrams............................................................. 22
Control board................................................................. 24
Field settings.................................................................. 28
Running a parameter query......................................... 29
Oil trap............................................................................. 30
Control mode.................................................................. 31
Sensor parameter.......................................................... 31
Troubleshooting................................................................... 32
Checking components................................................... 32
Fault codes...................................................................... 35
Troubleshooting guide.................................................. 46
Start-up sheet....................................................................... 49
Johnson Controls Ducted Systems
Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump 3
4 Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump
Johnson Controls Ducted Systems
General
Read all sections of this manual and keep the manual
for future reference.
WARNING: Cancer and Reproductive Harm –
www.P65Warnings.ca.gov.
The units are tested in accordance with the following:
The outdoor units are designed to be connected to a
matching indoor coil with sweat connect lines. This unit
is to be matched with one ducted indoor unit and is not
designed for application in a ductless configuration.
Refer to the Technical Guide for permissible system
configurations. Sweat connect units are factory charged
with refrigerant for a nominal sized matching indoor coil
plus 15 ft of field-supplied lines.
Safety
Read these safety precautions carefully to ensure correct
installation.
Note the following:
• You must match the outdoor unit with an indoor unit
with refrigerant R-410A.
• Use the specified filter drier on the liquid pipe when
connecting the units.
• Carefully file the indoor and outdoor unit manuals
away for future reference.
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
Incorrect installation may create a condition where the
operation of the product could cause personal injury
or property damage. Incorrect installation, adjustment,
alteration, service, or maintenance can cause injury
or property damage. Refer to this installation manual
for assistance or for additional information, consult a
qualified contractor, installer, or service agency.
CAUTION
This heat pump uses R-410A refrigerant. R-410A
systems operate at higher pressures than R-22
systems. Do not use R-22 service equipment
or components on R-410A equipment. Service
equipment must be rated for R-410A.
CAUTION
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.
Inspection
Inspect the unit immediately after receiving it for possible
damage during transit, including copper distributor lines
that may have shifted and are touching either copper
lines or the cabinet. If damage is evident, the extent of the
damage must be noted on the carrier’s delivery receipt.
A separate request for inspection by the carrier’s agent
must be made in writing. Contact the local distributor for
more information.
Requirements for installing or servicing R-410A
equipment
• Gauge sets, hoses, refrigerant containers, and
recovery system must be designed to handle the POE
type oils, and the higher pressures of R-410A.
• Manifold sets must be high side and low side with
low side retard.
• All hoses must have a 700 psig service pressure
rating.
• Leak detectors must be designed to detect HFC
refrigerant.
• Recovery equipment (including refrigerant recovery
containers) must be specifically designed to handle
R-410A.
Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump 5
Johnson Controls Ducted Systems
Limitations
Install the unit in accordance with all national, state, and
local safety codes, and the following limitations:
• Observe the limitations for the indoor unit, coil, and
appropriate accessories.
• Do not install the outdoor unit with any duct work in
the air stream. The outdoor fan is the propeller type
and is not designed to operate against any additional
external static pressure.
• Observe the maximum and minimum conditions for
operation to ensure a system that gives maximum
performance with minimum service.
Table 1: Minimum and maximum operating limit
conditions
Outdoor coil °F (°C) Indoor coil °F (°C)
Air
temperature DB cool DB heat WB cool DB heat
Minimum 35 (2) -5 (-21) 57 (14) 50 (10)
Maximum 122 (50) 75 (24) 72 (22) 80 (27)
Note: See the NOTICE in the Reduced capacity
conditions section.
Reduced capacity conditions
NOTICE
Inverter temperature protection
If excessive inverter temperatures are sensed, the
compressor speed/capacity is reduced until an
acceptable condition is reached. When the inverter
temperature returns to an acceptable level, the system
returns to normal operation.
NOTICE
Overcurrent and undercurrent protection
If a low or high current condition is sensed, the
compressor speed/capacity is reduced until an
acceptable current level is reached. When the system
reaches an acceptable current level, the compressor
and fan return to normal operating conditions.
NOTICE
Overvoltage and undervoltage protection
If a low or high supply voltage condition is sensed
(below 187 VAC or above 265 VAC), the compressor
speed/capacity is automatically reduced until an
acceptable voltage level is reached. When an
acceptable voltage level is sensed, the system
automatically returns to a normal state of operation.
NOTICE
Low ambient protection
Cooling mode: The unit automatically adjusts to
maintain cooling operation in outdoor ambient
conditions down to 35°F (2°C). The unit reduces
capacity and low ambient protection (cooling mode) or
cycles off if asked to provide cooling when the outdoor
temperature is at or below these conditions. Heating
mode: The unit provides compressor heat down to an
outdoor ambient temperature of -5°F (-29°C). As the
outdoor ambient temperature reduces, available heat
reduces for all air source heat pumps.
Piping considerations
When using more than 15 ft of interconnecting tubing,
see Table 2 for charging. For long-line applications,
interconnecting lines over 100 ft must be installed with
liquid line solenoid. Refer to the Piping Application Guide
for more information.
Figure 1: Refrigerant piping
Table 2: Refrigerant piping
Maximum
pipe length
(L)
Maximum
height
difference
(H)
Additional
refrigerant
- exceeding
15 ft (4.6 m)
Model
ft (m) ft (m) oz/ft (g/m)
HMH72B24 164 (50) 98 (30) 0.38 (11)
HMH72B36 246 (75) 98 (30) 0.38 (11)
HMH72B48,
HMH72B60 246 (75) 98 (30) 0.60 (17)
Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump6
Johnson Controls Ducted Systems
Liquid-line filter drier
This unit requires a bi-flow liquid line filter drier installed
external to the unit. This is included in the wiring
accessory kit HMH7AK001 required for installation.
R-410A filter-drier
Source 1 Part Number
Apply with models
S1-404101 All
NOTICE
Using a larger than specified line size could result
in oil return problems. Using too small a line results
in loss of capacity and other problems caused by
insufficient refrigerant flow. For the heat pump,
maintain level horizontal refrigerant lines between the
indoor unit and the outdoor unit to facilitate sufficient
oil return.
Add-on replacement/retrofit
When using this unit as a replacement for an existing
R-410A unit, these are matched systems. Replace
the indoor coil and the outdoor unit. Perform the
following steps to ensure correct system operation and
performance.
1. Change out the indoor coil to an approved R-410A
coil/air handling unit combination with the
appropriate metering device.
2. Change out the lineset when replacing an R-22 unit
with an R410A unit to reduce cross-contamination of
oils and refrigerants. If change-out of the lineset is
not practical, take the following precautions:
a. Inspect the lineset for kinks, sharp bends, or
other restrictions, and for corrosion.
b. Determine if there are any low spots that
might be serving as oil traps.
c. Flush the lineset with a commercially available
flush kit to remove as much of the existing oil
and contaminants as possible.
3. If replacing the outdoor unit because of a
compressor burnout, replace the refrigeration lines
or, at a minimum, thoroughly flush the lines with a
commercially available flush kit.
WARNING
Never install a suction-line filter drier in the liquid line
of an R-410A system. Failure to follow this warning
can cause a fire, injury, or death.
Precautions for line installation
Adhere to the following during line installation:
• Connect the outdoor unit to the indoor coil using
field supplied refrigerant grade (ACR) copper tubing
that is internally clean and dry. Units must only be
installed with the tubing sizes for approved system
combinations as specified in the Tabular Data Sheet.
The charge given is applicable for total tubing
lengths up to 15 ft (4.6 m).
• Install the refrigerant lines with as few bends as
possible. Ensure not to damage the couplings or
kink the tubing. Use clean hard drawn copper tubing
where no appreciable amount of bending around
obstruction is necessary. If soft copper must be
used, ensure to avoid sharp bends that may cause a
restriction.
• Install the lines so that they do not obstruct service
access to the coil, indoor section, or filter.
• Isolate the refrigerant lines to minimize noise
transmission from the equipment to the structure.
• Insulate the vapor line with a minimum of 1/2-in.
foam rubber insulation (Armaflex or equivalent).
Insulate liquid lines that may be exposed to direct
sunlight, high temperatures, or excessive humidity.
• Tape and suspend the refrigerant lines correctly. Do
not allow tube metal-to-metal contact. See Figure 2.
Figure 2: Installation of vapor line
• Use PVC piping as a conduit for all underground
installations as shown in Figure 3. Keep buried lines
as short as possible to minimize the build up of liquid
refrigerant in the vapor line during long periods of
shutdown.
Figure 3: Underground installation
Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump 7
Johnson Controls Ducted Systems
• Pack fiberglass insulation and a sealing material such
as permagum around refrigerant lines where they
penetrate a wall to reduce vibration and retain some
flexibility.
Additional refrigerant charge
The outdoor unit is precharged with enough R-410A
refrigerant for the outdoor unit, the smallest indoor unit,
and 15 ft of lineset. Additional refrigerant per foot of
additional lineset is 0.38 oz for the 24k and 36k models,
and 0.60 oz for the 48k and 60k models (see Table 2).
Refer to the Tabular Data Sheet for more information on
precharge amount and indoor combinations.
CAUTION
When installing the pipe through the wall, secure a cap
at the end of the pipe. Do not place the pipe directly on
the ground.
Unit installation
If installing the unit on a hot sun exposed roof or a
paved ground area that is seasonally hot, raise the unit
sufficiently above the roof or ground to avoid taking the
accumulated layer of hot air into the outdoor unit, which
can cause the unit to derate prematurely.
Transportation and handling
1. Route two lifting slings under the unit as shown
in Figure 4. If there are no packaging materials,
protect the unit with cloth or paper. See Figure 5.
Figure 4: Handling with packaging
Figure 5: Handling without packaging
2. Ensure the unit is balanced and, if safe to do so,
carefully lift the unit up.
Selecting a location for installation
Adhere to the following when selecting a location for
installation:
• Install and anchor the unit on a solid base that is 2 in.
above grade and does not shift or settle, which could
cause strain on the refrigerant lines and possible
leaks. Maintain the clearances shown in Figure 6
and install the unit horizontally in a level position.
The base pad must not come in contact with the
foundation or side of the structure because sound
may transmit to the residence.
• Before starting the installation, select and check the
suitability of the location for the indoor and outdoor
units.
• Ensure that the outdoor unit is installed in an
appropriate location that limits exposure to wind,
rain, snow accumulation, and direct sunlight.
• Locate the outdoor unit away from bedroom
windows or other rooms where sound might be
objectionable.
• Provide ample clearance from shrubs to allow
adequate air to pass across the outdoor coil without
leaves or branches being pulled into the fan.
• Ensure that the outdoor unit has sufficient clearance
for air entrance to the outdoor coil, air discharge,
and service access.
• Keep the length of the refrigerant tubing between
the outdoor unit and the indoor coil as short as
possible to avoid capacity and efficiency losses.
Observe all limitations and clearance requirements.
• Elevate the unit sufficiently to prevent any blockage
of the air entrances by snow in areas where snow
may accumulate. Check the local weather bureau for
the expected snow accumulation in your area.
• Isolate the unit from rain gutters to avoid any
possible wash out of the foundation.
WARNING
The outdoor unit must not be installed in an area
where mud or ice could cause personal injury.
Roof installation
When installing units on a roof, the structure must
be capable of supporting the total weight of the unit,
including a pad, lintels, and rails, which must be used to
minimize the transmission of sound or vibration into the
conditioned space.
Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump8
Johnson Controls Ducted Systems
Wall mount installation
Ensure to mount the outdoor unit on a solid base that
is sloped to shed water, secure from settlement, and
isolated from the structural foundation or walls to prevent
sound and vibration transmission into the living space.
On occasion, site conditions may require the use of
direct wall mounted brackets to locate and support the
outdoor unit. In these applications, ensure to address unit
base pan support, structural integrity, safe access and
serviceability, as well as the possible sound and vibration
transmission into the structure. Wall mounting requires
three mounting brackets and is best served by a properly
engineered solution. Refer to the Price Pages for the
specific part number for your application.
Avoid the following places for installation where damage
to the outdoor section may occur:
• Where there is machine oil
• Coastal regions where the equipment is prone to
atmospheric corrosion
• Near hot springs where the equipment is prone to
sulfide gas corrosion
• In proximity to high-frequency or wireless
equipment
Figure 6: Minimum clearances when selecting a
location
Note: When operating the outdoor section in low
ambient conditions, follow these instructions:
• Never install the outdoor unit in a place where
its air inlet/outlet side may be exposed directly
to wind.
• To prevent exposure to wind, install the
outdoor unit with its air inlet side facing the
wall.
• To prevent exposure to wind, install a baffle
board on the air outlet side of the outdoor unit.
Installing the drain elbow and drain
hose
About this task:
Condensate water may drain from the outdoor unit when
the unit operates in heating mode. To avoid adverse
conditions in the area around the unit, install the included
drain elbow and a drain hose to drain out the condensate
water. Install the drain elbow and drain the hose before
the indoor and outdoor units are connected.
1. Connect the drain hose (field-supplied, 15 mm
inside diameter) as shown in Figure 7.
Figure 7: Drainage
Note: Do not use a drainage elbow in colder
climates. The drain may freeze and cause the
fan to stop running.
NOTICE
Heat pumps defrost periodically resulting in water
drainage. The unit must not be located where
water drainage may freeze and create a hazardous
condition, such as sidewalks and steps.
Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump 9
Johnson Controls Ducted Systems
Installing the outdoor unit
1. Use washers when fastening the outdoor section at
the foundation bolts.
2. When fastening the outdoor section with the
foundation bolts, ensure that the anchoring
locations are as shown in Figure 8.
3. Fasten the outdoor section as shown in Figure 9.
4. Make sure to fasten the outdoor unit tightly and in
a horizontal position to prevent noise.
5. Do not drain condensate onto public places as this
may lead to slippery surfaces.
6. Use a strong base, made of concrete or similar, that
positions the outdoor section at least 2 in. from
the ground. This keeps the outdoor section dry
and reduces the chance of corrosion, which could
reduce the life span of the outdoor section. See
Figure 10.
Table 3: Anchoring locations
A B C D E F d
Model in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm)
HMH72B24 33 7/8 (860) 12 3/16 (310) 21 11/32 (542) 13 7/16 (341) 14 1/2 (368) 6 5/8 (168) 7/16–11/16
(11–17)
HMH72B36,
HMH72B48,
HMH72B60
37 3/8 (950) 13 3/8 (340) 22 7/8 (580) 14 15/16 (380) 16 1/4 (414) 7 1/4 (185) 5/8 (15)
Figure 8: Anchoring locations
Figure 9: Securing the unit
Note: If the bolt is too long or impedes any
future movement of the unit, cut it to a more
appropriate length.
Figure 10: Concrete base
Affixing the brand label
1. Find the brand label in the plastic bag attached to
the unit carton.
2. Remove the label backing and affix the brand label
in the area marked A in Figure 11, centered 1/2 in.
immediately below the tooling mark on the front
panel.
Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump10
Johnson Controls Ducted Systems
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