Johnson Controls RHP143 Series User manual

6198123-UIM-A-0622 York International Corporation, 5005
York Drive, Norman, OK 73069
2022-02-23
Johnson Controls Ducted Systems
R-410A Outdoor Split-System Heat Pump
Installation Manual - YH2E / THE2 /
RHP143 Series
Supersedes: nothing

2 R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series
Johnson Controls Ducted Systems

Contents
ContentsGeneral......................................................................................5
Safety.........................................................................................5
Inspection........................................................................... 5
Requirements for installing/servicing R-410A
equipment...........................................................................5
Limitations.......................................................................... 5
Unit installation........................................................................ 6
Location...............................................................................6
Add-on replacement/retrofit............................................6
Ground installation............................................................ 8
Roof installation................................................................. 8
Wall mount installation..................................................... 8
Unit placement................................................................... 9
Liquid line filter-drier.........................................................9
Piping connections.............................................................9
Precautions during line installation...............................10
Precautions during brazing of lines...............................10
Precautions during brazing of service valve.................10
Connecting the refrigerant lines.............................. 11
Indoor expansion device.......................................................12
Thermostatic expansion valve (TXV) installation......... 12
Evacuation...............................................................................13
System charge........................................................................13
Measuring indoor airflow............................................... 14
Charging the unit............................................................. 14
Determining the total system charge............................14
Charging with gauges..................................................... 15
Subcooling charging charts...................................... 15
Heating charging charts............................................21
Electrical connections............................................................27
General information and grounding............................. 27
Field connections power wiring..................................... 28
Field connections control wiring....................................28
Control wiring diagrams........................................... 30
Dehumidification control (typical)................................. 32
Indoor cubic feet per minute (CFM) settings
(typical)..............................................................................32
System start-up...................................................................... 33
Energize crankcase heater (where applicable)............ 33
System operation...................................................................33
Anti short-cycle delay...................................................... 33
Low voltage detection..................................................... 33
Test input.......................................................................... 33
Fault code display............................................................ 35
Demand defrost......................................................... 36
Operation.................................................................... 36
Defrost curves.............................................................36
Defrost curve selection..............................................36
Defrost cycle initiation...............................................36
Defrost inhibition....................................................... 36
Defrost termination................................................... 37
Cooling operation...................................................... 37
Heating operation......................................................37
Emergency heat......................................................... 37
Pressure switch fault and lockout............................37
Instructing the owner............................................................37
Maintenance.....................................................................38
Wiring diagrams.....................................................................39
Start-up sheet.........................................................................42
Johnson Controls Ducted Systems
R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series 3

4 R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series
Johnson Controls Ducted Systems

General
The outdoor units are designed to be connected to a
matching indoor coil with sweat connect lines. Sweat
connect units are factory charged with refrigerant for
a nominal sized matching indoor coil plus 15 ft of field-
supplied lines.
Matching indoor coils can be used with a thermostatic
expansion valve (TXV). Refer to the Tabular Data Sheet or to
the Technical Guide for the proper selection.
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
Improper installation may create a condition where
the operation of the product could cause personal
injury or property damage. Improper installation,
adjustment, alteration, service, or maintenance can
cause injury or property damage. Refer to this manual
for assistance. For additional information, consult a
qualified contractor, installer, or service agency.
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.
CAUTION
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.
Inspection
As soon as a unit is received, it must be inspected for
possible damage during transit. 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. See Local
Distributor for more information.
Requirements for installing/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 should be high side and low side with
low side retard.
• All hoses must have a 700 psig service pressure
rating.
• Leak detectors should be designed to detect HFC
refrigerant.
• Recovery equipment (including refrigerant recovery
containers) must be specifically designed to handle
R-410A.
• Do not use an R-22 TXV.
Limitations
The unit must be installed in accordance with all National,
State and Local Safety Codes and the limitations listed
below:
• Limitations for the indoor unit, coil, and appropriate
accessories must also be observed.
• The outdoor unit must not be installed 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.
• The maximum and minimum conditions for
operation must be observed to ensure a system that
will give maximum performance and service life.
Table 1: Maximum/minimum operating limit
conditions
Air temperature at
outdoor coil °F
Air temperature at indoor
coil °F
Minimum Maximum Minimum Maximum
DB
cool
DB
heat
DB
cool
DB
heat
WB
cool
DB
heat
WB
cool
DB
heat
55 0 125 75 57 50 72 80
R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series 5
Johnson Controls Ducted Systems

Note:
• Operation below this temperature is
permissible for a short period of time, during
morning warm-up.
• The unit should not be operated in cooling
mode at outdoor temperatures below 50°F
without an approved low ambient operation
accessory kit installed.
• The maximum allowable line length for this
product is 80 ft. Consult the Piping Application
Guide (P/N 247077) for installations over the
maximum allowable line length. Installation
of an accessory crankcase heater is required if
not factory installed for installations over the
maximum allowable line length.
Unit installation
Location
Before starting the installation, select and check the
suitability of the location for both the indoor and outdoor
unit. Observe all limitations and clearance requirements.
The outdoor unit must have sufficient clearance for air
entrance to the outdoor coil, air discharge, and service
access. See Figure 1 and Figure 2.
NOTICE
For multiple unit installations, units must be spaced a
minimum of 24 in. (61 cm) apart (coil face to coil face).
If the unit is installed on a hot sun-exposed roof or a
paved ground area that is seasonally hot, the unit must
be raised sufficiently above the roof or ground to avoid
taking the accumulated layer of hot air into the outdoor
unit.
If the system is being installed during seasonally cold
weather of 55°F or below, the preferred method is to
weigh in the charge. For charging or checking the system
charge at 55°F or below, see Heating charging charts.
There is an Optional Cold Weather Charging accessory
kit to prevent the outdoor unit from taking in cold air
below 55°F. The kit part number can be found in the list of
accessory kits at www.simplygettingthejobdone.com.
Provide adequate structural support for the unit.
Add-on replacement/retrofit
About this task:
When using this unit as a replacement for an R-410A
unit, you must replace the outdoor unit, indoor coil,
and metering device. Do the following to ensure proper
system operation and performance. Change out the line
set where possible.
1. Change out the indoor coil to an approved
R-410A coil or outdoor unit combination with the
appropriate metering device.
2. Change out the line-set when replacing an
R-22 unit with an R410-A unit to reduce cross-
contamination of oils and refrigerants.
3. If a change out of the line set is not practical, then
the following precautions should be taken.
- Inspect the line set for kinks, sharp bends,
or other restrictions, and for corrosion.
- Determine if there are any low spots which
might be serving as oil traps.
- Flush the line set with a commercially
available flush kit to remove as much of the
existing oil and contaminants as possible.
- Install a suction line filter-drier to trap any
remaining contaminants, and remove after
50 h of operation.
4. If the outdoor unit is being replaced due to a
compressor burnout, then installation of a 100%
activated alumina suction-line filter drier in the
suction-line is required, in addition to the factory
installed biflow liquid-line drier. Operate the
system for 10 h. Monitor the suction drier pressure
drop. If the pressure drop exceeds 3 psig, replace
both the suction-line and liquid-line driers. After
a total of 10 h runtime where the suction-line
pressure drop has not exceeded 3 psig, replace
the liquid line drier, and remove the suction-line
drier. Never leave a suction-line drier in the system
longer than 50 h of run time.
R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series6
Johnson Controls Ducted Systems

Example:
Figure 1: Typical installation clearances
R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series 7
Johnson Controls Ducted Systems

Figure 2: Alternative installation clearances
Ground installation
The unit may be installed at ground level on a solid
base that will not shift or settle, causing strain on the
refrigerant lines and possible leaks. The unit must
be installed in as level a position as possible while
maintaining the clearances shown in Figure 1 and Figure
2.
Normal operating sound levels may be objectionable if
the unit is placed directly under windows of certain rooms
such as a bedroom or study.
Condensate will drain from beneath the coil of the
outdoor unit during the defrost cycle. Normally this
condensate may be allowed to drain directly on the
ground.
WARNING
The outdoor unit must not be installed in an area
where mud or ice could cause personal injury.
Remember that condensate will drip from the unit
coil during heat and defrost cycles and that this
condensate will freeze when the temperature of the
outdoor air is below 32°F.
Elevate the unit sufficiently to prevent any blockage of the
air entrances by snow in areas where there will be snow
accumulation. 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.
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 should be used to
minimize the transmission of sound or vibration into the
conditioned space.
Wall mount installation
Care must be taken to mount the outdoor unit on a solid
base that is sloped to shed water, secure from settlement,
and is isolated from the structural foundation or walls to
prevent sound and vibration transmission into the living
space.
On occasion, site conditions may require direct wall
mounted brackets to be used to locate and support the
outdoor unit. In these applications, care must be taken to
address unit base pan support, structural integrity, safe
access and serviceability, as well as the possible sound
and vibration transmission into the structure. These
applications are best served by a properly engineered
solution.
R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series8
Johnson Controls Ducted Systems

Unit placement
About this task:
NOTICE
Heat pumps will 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.
1. Provide a base in the pre-determined location.
2. Remove the shipping carton and inspect for
possible damage.
3. Ensure that compressor tie-down bolts remain
tightened.
4. Position the unit on the base provided.
Liquid line filter-drier
The filter-drier is packaged and shipped along with the
outdoor unit. It is located outside the unit next to the
service valves.
CAUTION
Filter-drier is required to be installed in liquid line. The
recommended location is at the indoor coil before the
refrigerant metering device. It can be installed at the
outdoor unit if desired.
CAUTION
Using a granular type drier may result in damage to
the equipment.
CAUTION
Filter-drier must be wrapped in wet rag while brazing.
NOTICE
Replacements for the liquid line drier must be bi-flow
and an approved replacement from Source 1.
R-410A filter-drier source
1 Part Number
Apply with models
S1-404101 All heat pumps
Piping connections
The outdoor unit must be connected to the indoor coil
using field supplied refrigerant grade (ACR) copper
tubing that is internally clean and dry. Units should be
installed only with the tubing sizes for approved system
combinations as specified in tabular data sheet. The
charge given is applicable for total tubing lengths up to
15 ft (4.6 m). See Piping Application Guide (P/N 247077)
for installing tubing of longer lengths and elevation
differences.
NOTICE
Using a larger than specified line size could result in
oil return problems. Using too small a line will result
in loss of capacity and other problems caused by
insufficient refrigerant flow. Slope horizontal vapor
lines at least 1 in. (2.5 cm) every 20 ft (6.1 m) toward
the outdoor unit to facilitate proper oil return. If more
than the 80 ft line length is necessary, facilitate proper
refrigerant velocity with adjusted line diameter in
accordance with the Piping Application Guide (P/N
247077).
CAUTION
This system uses R-410A refrigerant which operates
at higher pressures than R-22. No other refrigerant
may be used in this system. Gauge sets, hoses,
refrigerant containers, and recovery system must be
designed to handle R-410A. If you are unsure, consult
the equipment manufacturer.
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.
R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series 9
Johnson Controls Ducted Systems

Precautions during line installation
• Install the lines with as few bends as possible. Care
must be taken 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, care must be taken to avoid sharp bends
which may cause a restriction.
• The lines should be installed so that they will not
obstruct service access to the coil, air handling
system, or filter.
• Care must also be taken to isolate the refrigerant
lines to minimize noise transmission from the
equipment to the structure.
• The vapor line must be insulated with a minimum
of 1/2 in. foam rubber insulation (Armaflex or
equivalent). Liquid lines that will be exposed to
direct sunlight, high temperatures, or excessive
humidity must also be insulated.
• Tape and suspend the refrigerant lines as shown. Do
not allow tube metal-to-metal contact. See Figure 3.
• Use PVC piping as a conduit for all underground
installations as shown in Figure 4. Buried lines
should be kept as short as possible to minimize the
build up of liquid refrigerant in the vapor line during
long periods of shutdown.
Figure 3: Installation of vapor line
• Pack fiberglass insulation and a sealing material
such as permagum around refrigerant lines where
they penetrate a wall to reduce vibration and to
retain some flexibility.
• For systems with total line length exceeding 80 ft
(22.86 m), refer to Piping Application Guide (P/N
247077) for vapor and liquid line sizing, calibration
of liquid line pressure loss or gain, determination
of vapor line velocity, elevation limitations, TXV
connections, system charging, traps, and crankcase
heater.
Figure 4: Underground installation
Precautions during brazing of lines
All outdoor unit and indoor coil connections are copper-
to-copper and should be brazed with a phosphorous-
copper alloy material such as Silfos-5 or equivalent. Do
not use soft solder. The outdoor units have reusable
service valves on both the liquid and vapor connections.
The total system refrigerant charge is retained within
the outdoor unit during shipping and installation. The
reusable service valves are provided to evacuate and
charge per this instruction.
Serious service problems can be avoided by taking
adequate precautions to assure an internally clean and
dry system.
CAUTION
Dry nitrogen should 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 should 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.
Precautions during brazing of service
valve
Precautions should be taken to prevent heat damage to
service valve by wrapping a wet rag around it as shown in
Figure 5. Also, protect all painted surfaces, insulation, and
plastic base during brazing. After brazing, cool joint with
wet rag.
R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series10
Johnson Controls Ducted Systems