UPG YZE03811 SERIES Installation Manual - User Manual

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361819-YIM-A-0208

R-410A
OUTDOOR SPLIT-SYSTEM
HEAT PUMP

MODELS: 18 SEER - YZE03811 SERIES
3 TON

INSTALLATION MANUAL

ISO 9001

Certified Quality

Management System

LISTED

SECTION I: 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 the smallest rated indoor coil plus 15 feet of field
supplied lines.

Matching indoor coils are available with a thermal expansion valve or
an orifice liquid feed sized for the most common usage. The orifice size
and/or refrigerant charge may need to be changed for some indoor-out-
door unit combinations, elevation differences or total line lengths. Refer
to Application Data covering “General Piping Recommendations and
Refrigerant Line Length” (Part Number 036-61920-001).

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 dam-
age

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 mainte-
nance can cause injury or property damage. Refer to this manual
for assistance or for additional information, consult a qualified con-
tractor, installer or service agency.

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.

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.

TABLE OF CONTENTS

GENERAL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT INSTALLATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATIONS REQUIRING TXV  . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

EVACUATION   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
SYSTEM CHARGE   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
INSTRUCTING THE OWNER   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
WIRING DIAGRAM   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

LIST OF FIGURES

Typical Installation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Tubing Hanger  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Underground Installation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Heat Protection   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Typical Field Wiring   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CFM Selection Board  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermostat Wiring – Two-Stage Heat Pumps -
Two-Stage Variable Speed Furnaces   . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermostat Wiring – Two-Stage Heat Pump -
Two-Stage Variable Speed Furnaces   . . . . . . . . . . . . . . . . . . . . . . . . . 8

Thermostat Wiring – Two-Stage Heat Pump -
Variable Speed Air Handler   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Thermostat Wiring – Two-Stage Heat Pump -
Variable Speed Air Handler   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Thermostat Wiring – Two-Stage Heat Pump -
Variable Speed Modulating Furnace   . . . . . . . . . . . . . . . . . . . . . . . . .11
Thermostat Wiring – Two-Stage Heat Pump -
Variable Speed Modulating Furnace   . . . . . . . . . . . . . . . . . . . . . . . . .12
Heat Pump Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Wiring Diagram  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

LIST OF TABLES

Defrost Initiate Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

R-410A Saturation Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

361819-YIM-A-0208

Unitary Products Group

INSPECTION

As soon as a unit is received, it should be inspected for possible dam-
age during transit. If damage is evident, the extent of the damage
should be noted on the carrier’s delivery receipt. A separate request for
inspection by the carrier’s agent should 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 POE oils, and the higher pressures
of R-410A.

•

Manifold sets should be 800 PSIG high side and 250 PSIG low
side with 550 PSIG low side restart.

•

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.

•

A liquid-line filter drier is required on every unit.

LIMITATIONS

The unit should 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 assure a system that will give maximum performance
with minimum service.

This unit is not designed to operate with a low ambient kit. Do not
modify the control system to operate with any kind of low ambient
kit.

The maximum allowable line length for this product is 75 feet.

SECTION III: 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
condenser coil, for air discharge and for service access. See Figure 1.

NOTE:

For multiple unit installations, units must be spaced a minimum

of 18 inches apart. (Coil face to coil face.)

If the unit is to be installed on a hot sun exposed roof or a black-topped
ground area, the unit should be raised sufficiently above the roof or
ground to avoid taking the accumulated layer of hot air into the outdoor
unit.

Provide an adequate structural support.

ADD-ON REPLACEMENT/RETROFIT

When this unit is being used as a replacement for an R-22 unit, it is
required that the outdoor unit, indoor coil, and metering device all be
replaced. The following steps should be performed in order to insure
proper system operation and performance. Line-set change out is also
recommended.

Change-out of the indoor coil to an approved R-410A coil/ con-
densing unit combination with the appropriate metering device.

Change-out of the line-set when replacing an R-22 unit with an
R410-A unit is highly recommended to reduce cross-contamina-
tion of oils and refrigerants.

If change-out of the line set is not practical, then the following pre-
cautions 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 contami-
nants, and remove after 50 hours of operation.

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 liquid-line drier. Operate the system for 10 hours. 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 hours run time 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 hours of run time.

AIR TEMPERATURE DB AT

OUTDOOR COIL, °F

AIR TEMPERATURE AT

INDOOR COIL, °F

Min.

Max.

Min.

Max.

Cool

Heat

Cool

Heat

Cool

Heat

Cool

Heat

-10

115

1. Operation below this temperature is permissible for a short period of

time, during morning warm-up.

FIGURE 1:

Typical Installation

THERMOSTAT

NEC CLASS 1

WIRING

TO INDOOR
BLOWER

NEC CLASS 2
WIRING

TO COIL

WEATHERPROOF

DISCONNECT SWITCH

48” OVERHEAD
CLEARANCE

24” SERVICE
ACCESS
CLEARANCE

18” FRONT

& SIDES

NOTE:

ALL OUTDOOR WIRING MUST BE WEATHERPROOF

SEAL OPENINGS WITH
PERMAGUM OR EQUIVALENT

361819-YIM-A-0208

Unitary Products Group

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.
Maintain the clearances shown in Figure 1 and install the unit in a level
position.

Normal operating sound levels may be objectionable if the unit is placed
directly under windows of certain rooms (bedrooms, study, etc.).

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.

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 sup-
porting the total weight of the unit, including a pad, lintels, rails, etc.,
which should be used to minimize the transmission of sound or vibra-
tion into the conditioned space.

UNIT PLACEMENT

Provide a base in the pre-determined location.

Remove the shipping carton and inspect for possible damage.

Compressor tie-down bolts should remain tightened.

Position the unit on the base provided.

NOTE:

Heat pumps will defrost periodically resulting in water drainage.

The unit should not be located where water drainage may freeze
and create a hazardous condition - such as sidewalks and
steps.

LIQUID LINE FILTER-DRIER

The heat pumps have a solid core bi-flow filter/dryer located on the liq-
uid line.

NOTE: Replacements for the liquid line drier must be exactly the same

as marked on the original factory drier. See

Source 1 for O.E.M.

replacement driers.

PIPING CONNECTIONS

The outdoor unit must be connected to the indoor coil using field sup-
plied refrigerant grade 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 feet. See Application Data
Part Number 036-61920-001 for installing tubing of longer lengths and
elevation differences.

NOTE:

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" every 20 feet toward the out-
door unit to facilitate proper oil return.

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" foam rub-
ber insulation (Armaflex or equivalent). Liquid lines that will be
exposed to direct sunlight and/or high temperatures must also be
insulated.

Tape and suspend the refrigerant lines as shown. DO NOT allow tube
metal-to-metal contact. See Figure 2.

Use PVC piping as a conduit for all underground installations as
shown in Figure 3. 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

Pack fiberglass insulation and a sealing material such as perma-
gum around refrigerant lines where they penetrate a wall to reduce
vibration and to retain some flexibility.

See Form 690.01-AD1V for additional piping information.

The outdoor unit should 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.

Failure to do so or using a substitute drier or a granular type may
result in damage to the equipment.

R-410A / R-22

Filter-Drier

Source 1 Part No.

Apply with Models

YZE

026 - 25512 - 000

All Sizes

This system uses R-410A refrigerant which operates at higher pres-
sures 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.

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.

FIGURE 2:

Tubing Hanger

Liquid
Line

Incorrect

Correct

Tape

Sheet Metal Hanger

Insulated Vapor Line

361819-YIM-A-0208

Unitary Products Group

PRECAUTIONS DURING BRAZING OF LINES

All outdoor unit and evaporator 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 pro-
vided to evacuate and charge per this instruction.

Serious service problems can be avoided by taking adequate precau-
tions to assure an internally clean and dry system.

PRECAUTIONS DURING BRAZING SERVICE VALVE

Wrap a wet rag around the service valve as shown in Figure 4 to pre-
vent heat damage. Also, protect all painted surfaces, insulation, and
plastic base during brazing. After brazing cool joint with wet rag.

Valve can be opened by removing the plunger cap and fully inserting a
hex wrench into the stem and backing out counter-clockwise until valve
stem just touches the chamfered retaining wall.

Connect the refrigerant lines using the following procedure:

Remove the cap and Schrader core from both the liquid and vapor
service valve service ports at the outdoor unit. Connect low pres-
sure nitrogen to the liquid line service port.

Braze the liquid line to the liquid valve at the outdoor unit. Be sure
to wrap the valve body with a wet rag. Allow the nitrogen to con-
tinue flowing. Refer to the Tabular Data Sheet for proper liquid line
sizing.

Carefully remove the rubber plugs from the evaporator liquid and
vapor connections at the indoor coil.

Braze the liquid line to the evaporator liquid connection. Nitrogen
should be flowing through the evaporator coil.

Slide the grommet away from the vapor connection at the indoor
coil. Braze the vapor line to the evaporator vapor connection. After
the connection has cooled, slide the grommet back into original
position. Refer to the Tabular Data Sheet for proper vapor line siz-
ing.

Protect the vapor valve with a wet rag and braze the vapor line
connection to the outdoor unit. The nitrogen flow should be exiting
the system from the vapor service port connection. After this con-
nection has cooled, remove the nitrogen source from the liquid fit-
ting service port.

Replace the Schrader core in the liquid and vapor valves.

Go to “SECTION IV” for TXV installation.

Leak test all refrigerant piping connections including the service
port flare caps to be sure they are leak tight. DO NOT OVER-
TIGHTEN (between 40 and 60 inch - lbs. maximum).

10. Evacuate the vapor line, evaporator and the liquid line, to 500

microns or less.

NOTE:

Line set and indoor coil can be pressurized to 250 psig with dry

nitrogen and leak tested with a bubble type leak detector. Than
release the nitrogen charge.

NOTE:

Do not use the system refrigerant in the outdoor unit to purge or

leak test.

11.

Replace cap on service ports. Do not remove the flare caps from
the service ports except when necessary for servicing the system.

12. Release the refrigerant charge into the system. Open both the liq-

uid and vapor valves by removing the plunger cap and with an
allen wrench back out counter-clockwise until valve stem just
touches the chamfered retaining wall. See Page 4 "PRECAU-
TIONS DURING BRAZING SERVICE VALVE".

13. Replace plunger cap finger tight, then tighten an additional 1/12

turn (1/2 hex flat). Cap must be replaced to prevent leaks.

FIGURE 3:

Underground Installation

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 pro-
vided. 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.

This is not a backseating valve. The service access port has a
valve core. Opening or closing valve does not close service access
port.
If the valve stem is backed out past the chamfered retaining wall,
the O-ring can be damaged causing leakage or system pressure
could force the valve stem out of the valve body possibly causing
personal injury.

TO INDOOR COIL

TO O UTDOOR UNIT

LIQUID LINE

CAP

PVC

CONDUIT

INSULATED

VAPOR LINE

FIGURE 4:

Heat Protection

The evaporator is pressurized.

Do not connect manifold gauges unless trouble is suspected.
Approximately 3/4 ounce of refrigerant will be lost each time a stan-
dard manifold gauge is connected.

361819-YIM-A-0208

Unitary Products Group

See "System Charge” section for checking and recording system
charge.

SECTION IV: INSTALLATIONS REQUIRING

TXV

For installations requiring a TXV, the following are the basic steps for
installation. For detailed instructions, refer to the Installation Instructions
accompanying the TXV kit.

Install TXV kit as follows:

First, relieve the holding charge by depressing the Schrader valve
located in the end of the liquid line.

After holding charge is completely discharged, loosen and remove
the liquid line fitting from the orifice distributor assembly. Note that
the fitting has

right

hand

threads

Remove the orifice from the distributor body using a small diame-
ter wire or paper clip. Orifice is not used when the TXV assembly
is installed.

After orifice is removed, install the thermal expansion valve to the
orifice distributor assembly with supplied fittings. Hand tighten and
turn an additional 1/8 turn to seal. Do not overtighten fittings.

Reinstall the liquid line to the top of the thermal expansion valve.
Hand modify the liquid line to align with casing opening.

Install the TXV equalizer line into the vapor line as follows:

Select a location on the vapor line for insertion of the equal-
izer line which will not interfere with TXV bulb placement.

Use an awl to punch through the suction tube and insert the
awl to a depth to achieve a 1/8” diameter hole.

Install TXV equalizer line in 1/8” hole previously made in vapor
line. Equalizer line should not be bottomed out in vapor line. Insert
equalizer line at least 1/4” in the vapor line. Braze equalizer line
making sure that tube opening is not brazed closed.

All connections to be brazed 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.

Install the TXV bulb to the vapor line near the equalizer line, using the
two bulb clamps furnished with the TXV assembly. Ensure the bulb is
making maximum contact. Refer to TXV installation instruction for view
of bulb location.

Bulb should be installed on a horizontal run of the vapor line if
possible. On lines under 7/8" OD the bulb may be installed on
top of the line. With 7/8" OD and over, the bulb should be
installed at the position of about 2 or 10 o'clock.

If bulb installation is made on a vertical run, the bulb should
be located at least 16 inches from any bend, and on the tub-
ing sides opposite the plane of the bend. The bulb should be
positioned with the bulb tail at the top, so that the bulb acts as
a reservoir.

Bulb should be insulated using thermal insulation provided to
protect it from the effect of the surrounding ambient tempera-
ture.

SECTION V: ELECTRICAL CONNECTIONS

GENERAL INFORMATION & GROUNDING

Check the electrical supply to be sure that it meets the values specified
on the unit nameplate and wiring label.

Power wiring, control (low voltage) wiring, disconnect switches and over
current protection must be supplied by the installer. Wire size should be
sized per NEC requirements.

The complete connection diagram and schematic wiring label is located
on the inside surface of the unit service access panel and this instruc-
tion.

FIELD CONNECTIONS POWER WIRING

Install the proper size weatherproof disconnect switch outdoors
and within sight of the unit.

Remove the screws at the bottom of the corner cover. Slide corner
cover down and remove from unit. See Figure 5.

Run power wiring from the disconnect switch to the unit.

Remove the service access panel to gain access to the unit wiring.
Route wires from disconnect through power wiring opening pro-
vided and into the unit control box.

Install the proper size time-delay fuses or circuit breaker, and
make the power supply connections.

Energize the crankcase heater if equipped to save time by pre-
heating the compressor oil while the remaining installation is com-
pleted.

Never attempt to repair any brazed connections while the system is
under pressure. Personal injury could result.

In all cases, mount the TXV bulb after vapor line is brazed and has
had sufficient time to cool.

All field wiring must USE COPPER CONDUCTORS ONLY and
be in accordance with Local, National Fire, Safety & Electrical
Codes. This unit must be grounded with a separate ground
wire in accordance with the above codes.

FIGURE 5:

Typical Field Wiring

CONTROL
WIRING

POWER
WIRING

CORNER
COVER

SERVICE
ACCESS
PANEL

361819-YIM-A-0208

Unitary Products Group

FIELD CONNECTIONS CONTROL WIRING

Route low voltage wiring into bottom of control box as shown in
Figure 5. Make low voltage wiring connections inside the junction
box per Figures 7 - 12.

The complete connection diagram and schematic wiring label is
located on the inside surface of the unit service access panel.

Replace the corner cover and service access panel that were
removed in Steps 2 and 4 of the “Field Connections Power Wiring”
section.

All field wiring to be in accordance with national electrical codes
(NEC) and/or local-city codes.

Mount the thermostat about 5 ft. above the floor, where it will be
exposed to normal room air circulation. Do not place it on an out-
side wall or where it is exposed to the radiant effect from exposed
glass or appliances, drafts from outside doors or supply air grilles.

Route the 24-volt control wiring (NEC Class 2) from the outdoor
unit to the indoor unit and thermostat.

NOTE:

To eliminate erratic operation, seal the hole in the wall at the

thermostat with permagum or equivalent to prevent air drafts
affecting the operation of in the thermostat.

DEHUMIDIFICATION CONTROL

A dehumidification control accessory 2HU06700124 may be used with
variable speed air handlers or furnaces in high humidity areas. This
control works with the variable speed indoor unit to provide cooling at a
reduced air flow, lowering evaporator temperature and increasing latent
capacity. The humidistat in this control opens the humidistat contacts on
humidity rise. To install, refer to instructions packaged with the acces-
sory and Figures 7 - 12. Prior to the installation of the dehumidification
control, the jumper across the HUMIDISTAT terminals on the indoor
variable speed air handler or furnace CFM selection board must be
removed.

During cooling, if the relative humidity in the space is higher than the
desired set point of the dehumidification control, the variable speed

blower motor will operate at lower speed until the dehumidification con-
trol is satisfied. A 40-60% relative humidity level is recommended to
achieve optimum comfort.

If a dehumidification control is installed, it is recommended that a mini-
mum air flow of 325 cfm/ton be supplied at all times.

CFM SELECTION BOARD SETTINGS

For proper system operation the CFM Selection Board jumpers must be
set properly.

Refer to the Tabular Data Sheet for the recommended air flow settings
for each size condensing unit.

Set the cooling speed per the instructions for the air handler or furnace
by selecting the correct COOL and ADJ taps. Verify the airflow using
the LED display on the CFM selection board.

The HEAT PUMP jumper

MUST

be removed or in the “YES” position for

proper system operation.

The HUMIDISTAT jumper must also be removed or in the “YES” posi-
tion if a dehumidistat is installed.

FIGURE 6:

CFM Selection Board

CFM SELECTION BOARD

TAP SELECTION

D
C
B
A

COOL

HEAT

ADJ

DELAY

REMOVE FOR

HEAT PUMP

HUMIDISTAT

361819-YIM-A-0208

Unitary Products Group

For additional connection diagrams for all UPG equipment refer to “Low Voltage System Wiring” document available online at www.upgnet.com in the
Product Catalog Section.

FIGURE 7:

Thermostat Wiring – Two-Stage Heat Pumps - Two-Stage Variable Speed Furnaces

HP 24A

Two Stage Heat Pump – Two Stage Variable Speed Furnace (With Hot Heat Pump Operation)

Reversing Valve

Energized in Cool

24 – Volt Common

24 – Volt Hot

W1 OUT

First Stage Heat

W2 OUT

Second Stage Heat

Y2 OUT

Second Stage Compressor

Single Stage Compressor

X/L

Malfunction Light

Second Stage Compressor

Auxiliary Heat

Bonnet Sensor

BSG

Bonnet Sensor

TWO STAGE

HEAT PUMP

Bonnet Sensor

(Optional)

24 – Volt Common

First Stage Compressor

Malfunction Light

Second Stage Compressor

Fan

*PP32U71124
*PP32U72124

THERMOSTAT

24 – Volt Hot

E/W1

First Stage Aux. Heat

Second Stage Aux. Heat

DHM

Dehumidistat

Humidistat

Reversing Valve

Energized in Cool

Change FFuel jumper

on the heat pump control

to “ON”

Part Numbers:

SAP = Legacy

126768 = 031-09137

18395 = 031-01996
340512 = 031-09178

Part Numbers:

SAP = Legacy

265904 = 031-09169

24 – Volt Common

24 – Volt Hot

Single Stage Compressor

TWO STAGE

VARIABLE SPEED

FURNACE CONTROL

Fan

TWO STAGE

VARIABLE SPEED

FURNACE

W/W1

First Stage Heat

Y/Y2

Second or Full

Stage Compressor

Second Stage Heat

Reversing Valve

X/L

Malfunction Light

DHUM

Dehumidification

Move HEAT PUMP

jumper to “YES”

Move DHUM

jumper to “YES”

if humidistat is to be used.

PV(8/9)

ID MODELS

(F/L)*(8/9)V

YORKGUARD VI

CONTROL

(G/L)(8/9)V

YZE

OD MODELS

YZH

H*5

H*8

24VAC Humidifier

(Optional)

Step 1 of the Thermostat

Installer Table must be

set to Heat Pump

E2/P Switch must be in the

E2 position

Step 2 of the Thermostat

Installer Table must be

set to 2

Step 5 of Thermostat User

Configuration Menu must

be set to “ON” for

Dehumidification

Change Hot Heat Pump

jumper on the heat pump

control to “ON”

361819-YIM-A-0208

Unitary Products Group

FIGURE 8:

Thermostat Wiring – Two-Stage Heat Pump - Two-Stage Variable Speed Furnaces

HP 24C

Two Stage Heat Pump – Two Stage Variable Speed Furnace (With Hot Heat Pump Operation)

Reversing Valve

Energized in Cool

24 – Volt Common

24 – Volt Hot

W1 OUT

First Stage Heat

W2 OUT

Second Stage Heat

Y2 OUT

Second Stage Compressor

Single Stage Compressor

X/L

Malfunction Light

Second Stage Compressor

Auxiliary Heat

Bonnet Sensor

BSG

Bonnet Sensor

TWO STAGE

HEAT PUMP

Bonnet Sensor

(Optional)

Change FFuel jumper

on the heat pump control

to “ON”

Part Numbers:

SAP = Legacy

126768 = 031-09137

18395 = 031-01996
340512 = 031-09178

Part Numbers:

SAP = Legacy

265904 = 031-09169

24 – Volt Common

24 – Volt Hot

Single Stage Compressor

TWO STAGE

VARIABLE SPEED

FURNACE CONTROL

Fan

TWO STAGE

VARIABLE SPEED

FURNACE

W/W1

First Stage Heat

Y/Y2

Second or Full

Stage Compressor

Second Stage Heat

Reversing Valve

X/L

Malfunction Light

DHUM

Dehumidification

Move HEAT PUMP

jumper to “YES”

Move DHUM

jumper to “YES”

if humidistat is to be used.

PV(8/9)

ID MODELS

(F/L)*(8/9)V

YORKGUARD VI

CONTROL

(G/L)(8/9)V

YZE

OD MODELS

YZH

H*5

H*8

24 – Volt Common

24 – Volt Hot

First Stage Compressor

Reversing Valve

Energized in Cool

Malfunction Light

Second Stage Compressor

Fan

*DN22H00124

*DP22U70124

THERMOSTAT

E/W1

First Stage Aux. Heat

Second Stage Aux. Heat

24 – Volt Common

First Stage Compressor

O/B

Reversing Valve

Malfunction Light

Second Stage Compressor

Fan

*PP32U70124

THERMOSTAT

Emergency Heat

24 – Volt Hot
(Heat XFMR)

24 – Volt Hot
(Cool XFMR)

AUX

Auxiliary Heat

Step 1 of Thermostat

Installer/Configuration

Menu must be set to “HP2”

Selection of GAS/ELEC

switch on thermostat

not necessary

Thermostat Installer Setup

0170-System Type-

must be set to 12

3 Heat/2 Heat Pump

Thermostat Installer Setup

0190-Changeover Valve-

must be set to 0

O/B terminal

Energized in Cooling

Thermostat Installer Setup

0200-Backup Heat Source-

must be set to 1

Heat Pump Backup Heat

Source is Fossil Fuel

External Humidistat

(Optional)

Open on Humidity Rise

Thermostat Installer Setup

0210-External Fossil Fuel

Kit- must be set to 1

Heat Pump Control

is Controlling Heat Pump

Backup Heat

Change Hot Heat Pump

jumper on the heat pump

control to “ON”

361819-YIM-A-0208

Unitary Products Group

FIGURE 9:

Thermostat Wiring – Two-Stage Heat Pump - Variable Speed Air Handler

HP 27A

Two Stage Heat Pump – Variable Speed Air Handler (With Hot Heat Pump Operation)

Reversing Valve

Energized in Cool

24 – Volt Common

24 – Volt Hot

W1 OUT

First Stage Heat

W2 OUT

Second Stage Heat

Y2 OUT

Second Stage Compressor

Single Stage Compressor

X/L

Malfunction Light

Second Stage Compressor

Auxiliary Heat

Bonnet Sensor

BSG

Bonnet Sensor

TWO STAGE

HEAT PUMP

24 – Volt Common

First Stage Compressor

Malfunction Light

Second Stage Compressor

Fan

*PP32U71124
*PP32U72124

THERMOSTAT

24 – Volt Hot

E/W1

First Stage Aux. Heat

Second Stage Aux. Heat

DHM

Dehumidistat

Humidistat

Step 1 of the Thermostat

Installer Table must be

set to Heat Pump

Reversing Valve

Energized in Cool

24VAC Humidifier

(Optional)

Part Numbers:

SAP = Legacy

159481 = 031-09157

COM

24 – Volt Common

24 – Volt Hot

First Stage Aux. Heat

Second Stage Aux. Heat

Single Stage Compressor

Y/Y2

Second or Full

Stage Compressor

Reversing Valve

Energized in Cool

X/L

Malfunction Light

HUM

Dehumidification-

Open on Humidity Rise

VARIABLE SPEED

AIR HANDLER CONTROL

Fan

Move the MODE

jumper to “HP”

Move the HUM STAT

jumper to “YES”

if humidistat is to be used.

VARIABLE SPEED

AIR HANDLER

Part Numbers:

SAP = Legacy

126768 = 031-09137

18395 = 031-01996
340512 = 031-09178

ID MODELS

YZE

OD MODELS

YZH

H*5

YORKGUARD VI

CONTROL

H*8

24VAC

Electronic Air Cleaner

(Optional)

E2/P Switch must be in the

E2 position

Step 2 of the Thermostat

Installer Table must be

set to 2

Step 5 of Thermostat User

Configuration Menu must

be set to “ON” for

Dehumidification

EAC(24 VAC out)

Electronic Air Cleaner

Refer to AH documentation

for W1 and W2 electric

heat staging options.

HUM OUT

(24 VAC out)

Second stage auxiliary

heat will be controlled by

the thermostat, not the

heat pump control when

wired as shown.

Change Hot Heat Pump

jumper on the heat pump

control to “ON”

361819-YIM-A-0208

Unitary Products Group

FIGURE 10:

Thermostat Wiring – Two-Stage Heat Pump - Variable Speed Air Handler

HP 27C

Two Stage Heat Pump – Variable Speed Air Handler (With Hot Heat Pump Operation)

Reversing Valve

Energized in Cool

24 – Volt Common

24 – Volt Hot

W1 OUT

First Stage Heat

W2 OUT

Second Stage Heat

Y2 OUT

Second Stage Compressor

Single Stage Compressor

X/L

Malfunction Light

Second Stage Compressor

Auxiliary Heat

Bonnet Sensor

BSG

Bonnet Sensor

TWO STAGE

HEAT PUMP

24 – Volt Common

24 – Volt Hot

First Stage Compressor

Reversing Valve

Energized in Cool

Malfunction Light

Second Stage Compressor

Fan

*DN22H00124

*DP22U70124

THERMOSTAT

E/W1

First Stage Aux. Heat

Second Stage Aux. Heat

Step 1 of Thermostat

Installer/Configuration

Menu must be set to “HP2”

Selection of GAS/ELEC

switch on thermostat

not necessary

24 – Volt Common

First Stage Compressor

O/B

Reversing Valve

Malfunction Light

Second Stage Compressor

Fan

*PP32U70124

THERMOSTAT

Emergency Heat

24 – Volt Hot
(Heat XFMR)

24 – Volt Hot
(Cool XFMR)

Thermostat Installer Setup

0170-System Type-

must be set to 12

3 Heat/2 Heat Pump

Thermostat Installer Setup

0190-Changeover Valve-

must be set to 0

O/B terminal

Energized in Cooling

Thermostat Installer Setup

0200-Backup Heat Source-

must be set to 0

Heat Pump Backup Heat

Source is Electric

AUX

Auxiliary Heat

24VAC Humidifier

(Optional)

Part Numbers:

SAP = Legacy

159481 = 031-09157

COM

24 – Volt Common

24 – Volt Hot

First Stage Aux. Heat

Second Stage Aux. Heat

Single Stage Compressor

Y/Y2

Second or Full

Stage Compressor

Reversing Valve

Energized in Cool

X/L

Malfunction Light

HUM

Dehumidification-

Open on Humidity Rise

VARIABLE SPEED

AIR HANDLER CONTROL

Fan

Move the MODE

jumper to “HP”

Move HUM STAT

jumper to “YES”

if humidistat is to be used.

VARIABLE SPEED

AIR HANDLER

Part Numbers:

SAP = Legacy

126768 = 031-09137

18395 = 031-01996
340512 = 031-09178

ID MODELS

YZE

YZH

H*5

YORKGUARD VI

CONTROL

H*8

24VAC

Electronic Air Cleaner

(Optional)

EAC(24 VAC out)

Electronic Air Cleaner

External Humidistat

(Optional)

Open on Humidity Rise

HUM OUT

(24 VAC out)

Refer to AH documentation

for W1 and W2 electric

heat staging options.

Second stage auxiliary

heat will be controlled by

the thermostat, not the

heat pump control when

wired as shown.

OD MODELS

Change Hot Heat Pump

jumper on the heat pump

control to “ON”

Part Number:

S1-2HU16700124

361819-YIM-A-0208

Unitary Products Group

FIGURE 11:

Thermostat Wiring – Two-Stage Heat Pump - Variable Speed Modulating Furnace

HP 28A

Two Stage Heat Pump – Variable Speed Modulating Furnace (With Hot Heat Pump Operation)

Reversing Valve

Energized in Cool

24 – Volt Common

24 – Volt Hot

W1 OUT

First Stage Heat

W2 OUT

Second Stage Heat

Y2 OUT

Second Stage Compressor

Single Stage Compressor

X/L

Malfunction Light

Second Stage Compressor

Auxiliary Heat

Bonnet Sensor

BSG

Bonnet Sensor

YORKGUARD VI

CONTROL

TWO STAGE

HEAT PUMP

Bonnet Sensor

(Optional)

24 – Volt Common

First Stage Compressor

Malfunction Light

Second Stage Compressor

Fan

*PP32U71124
*PP32U72124

THERMOSTAT

24 – Volt Hot

E/W1

First Stage Aux. Heat

Second Stage Aux. Heat

DHM

Dehumidistat

Humidistat

Reversing Valve

Energized in Cool

24 – Volt Common

24 – Volt Hot

Single Stage Compressor

VARIABLE SPEED

MODULATING

FURNACE CONTROL

Fan

VARIABLE SPEED

MODULATING

FURNACE

Y/Y2

Second or Full

Stage Compressor

HUM

Dehumidification-

Open on Humidity Rise

Modulating Heat

Change FFuel jumper

on the heat pump control

to “ON”

Part Numbers:

SAP = Legacy

171334 = 031-09153

Move HUMIDISTAT

jumper to “YES”

if humidistat is to be used.

Part Numbers:

SAP = Legacy

126768 = 031-09137

18395 = 031-01996
340512 = 031-09178

PC(8/9)

ID MODELS

FC(8/9)C

FL(8/9)C

YZE

OD MODELS

YZH

H*5

H*8

Step 1 of the Thermostat

Installer Table must be

set to Heat Pump

E2/P Switch must be in the

E2 position

Step 2 of the Thermostat

Installer Table must be

set to 2

Step 5 of Thermostat User

Configuration Menu must

be set to “ON” for

Dehumidification

24VAC Humidifier

(Optional)

Change Hot Heat Pump

jumper on the heat pump

control to “ON”

361819-YIM-A-0208

Unitary Products Group

FIGURE 12:

Thermostat Wiring – Two-Stage Heat Pump - Variable Speed Modulating Furnace

HP 28C

Two Stage Heat Pump – Variable Speed Modulating Furnace (With Hot Heat Pump Operation)

Reversing Valve

Energized in Cool

24 – Volt Common

24 – Volt Hot

W1 OUT

First Stage Heat

W2 OUT

Second Stage Heat

Y2 OUT

Second Stage Compressor

Single Stage Compressor

X/L

Malfunction Light

Second Stage Compressor

Auxiliary Heat

Bonnet Sensor

BSG

Bonnet Sensor

YORKGUARD VI

CONTROL

TWO STAGE

HEAT PUMP

Bonnet Sensor

(Optional)

24 – Volt Common

24 – Volt Hot

Single Stage Compressor

VARIABLE SPEED

MODULATING

FURNACE CONTROL

Fan

VARIABLE SPEED

MODULATING

FURNACE

Y/Y2

Second or Full

Stage Compressor

HUM

Dehumidification-

Open on Humidity Rise

Modulating Heat

Change FFuel jumper

on the heat pump control

to “ON”

Part Numbers:

SAP = Legacy

171334 = 031-09153

Move HUMIDISTAT

jumper to “YES”

if humidistat is to be used.

Part Numbers:

SAP = Legacy

126768 = 031-09137

18395 = 031-01996
340512 = 031-09178

PC(8/9)

ID MODELS

FC(8/9)C

FL(8/9)C

YZE

OD MODELS

YZH

H*5

H*8

24 – Volt Common

24 – Volt Hot

First Stage Compressor

Reversing Valve

Energized in Cool

Malfunction Light

Second Stage Compressor

Fan

*DN22H00124

*DP22U70124

THERMOSTAT

E/W1

First Stage Aux. Heat

Second Stage Aux. Heat

24 – Volt Common

First Stage Compressor

O/B

Reversing Valve

Malfunction Light

Second Stage Compressor

Fan

*PP32U70124

THERMOSTAT

Emergency Heat

24 – Volt Hot
(Heat XFMR)

24 – Volt Hot
(Cool XFMR)

AUX

Auxiliary Heat

Step 1 of Thermostat

Installer/Configuration

Menu must be set to “HP2”

Selection of GAS/ELEC

switch on thermostat

not necessary

Thermostat Installer Setup

0170-System Type-

must be set to 12

3 Heat/2 Heat Pump

Thermostat Installer Setup

0190-Changeover Valve-

must be set to 0

O/B terminal

Energized in Cooling

Thermostat Installer Setup

0200-Backup Heat Source-

must be set to 1

Heat Pump Backup Heat

Source is Fossil Fuel

External Humidistat

(Optional)

Open on Humidity Rise

Thermostat Installer Setup

0210-External Fossil Fuel

Kit- must be set to 1

Heat Pump Control

is Controlling Heat Pump

Backup Heat

Change Hot Heat Pump

jumper on the heat pump

control to “ON”

361819-YIM-A-0208

Unitary Products Group

SECTION VI: EVACUATION

It will be necessary to evacuate the system to 500 microns or less. If a
leak is suspected, leak test with dry nitrogen to locate the leak. Repair
the leak and test again.

To verify that the system has no leaks, simply close the valve to the vac-
uum pump suction to isolate the pump and hold the system under vac-
uum. Watch the micron gauge for a few minutes. If the micron gauge
indicates a steady and continuous rise, it’s an indication of a leak. If the
gauge shows a rise, then levels off after a few minutes and remains
fairly constant, its an indication that the system is leak free but still con-
tains moisture and may require further evacuation if the reading is
above 500 microns.

SECTION VII: SYSTEM CHARGE

The factory charge in the outdoor unit includes enough charge for the
unit, a 15 ft. line set and the smallest rated indoor coil match-up. Some
indoor coil matches may require additional charge. See tabular data
sheet provided in unit literature packet for charge requirements.

The “TOTAL SYSTEM CHARGE” must be permanently stamped on the
unit data plate.

Total system charge is determined as follows:

Determine outdoor unit charge from tabular data sheet.

Determine indoor coil adjustment from tabular data sheet.

Calculate the line charge using the tabular data sheet if line length
is greater than15 feet.

Total system charge = item 1 + item 2 + item 3.

Permanently stamp the unit data plate with the total amount of
refrigerant in the system.

Use the following subcooling charging method whenever additional
refrigerant is required for the system charge. A superheat charging
method is not suitable for TXV equipped systems.

Measurement Method

If a calibrated charging cylinder or accurate weighing device is avail-
able, add refrigerant accordingly.

Check flare caps on service ports to be sure they are leak tight. DO
NOT OVERTIGHTEN (between 40 and 60 inch - lbs. maximum).

Subcooling Charging Method

For the

heating operation

, there is no accurate subcooling method for

charging the unit. If unit charging is required during heating operation,
the unit must be evacuated and charge weighed-in per the marking on
the rating plate.

For the

cooling operation

, the recommended subcooling is typically

around 10°F. This may vary greatly based on each unique system.

Set the system running in the cooling mode by setting the thermo-
stat at least 6°F below the room temperature.

Operate the system for a minimum of 15-20 minutes.

Refer to the tabular data sheet for the recommended airflow and
verify this indoor airflow (it should be about 400 SCFM per ton).

Measure the liquid refrigerant pressure P and temperature T at the
service valve.

Calculate the saturated liquid temperature ST from Table 2 on the
last page of this document.

Subcooling temperature TC = Saturated Temperature (ST) - Liquid
Temp (T).

Add charge if the calculated subcooling temperature TC in Step 6 is
lower than the recommended level. Remove and recover the refrigerant
if the subcooling TC is higher than the recommended level.

See rating plate for unit specific subcooling chart.

See Figure 13 to trace the flow of refrigerant through the system.

R-410A refrigerant cylinders are rose colored, and have a dip tube
which allows liquid to flow out of the cylinder in the

Upright Posi-

tion.

Always charge the system slowly with the tank in the upright

position.

Do not leave the system open to the atmosphere. Unit damage
could occur due to moisture being absorbed by the POE oil in the
system. This type of oil is highly susceptible to moisture absorp-
tion.

Refrigerant charging should only be carried out by a qualified air
conditioning contractor.

Compressor damage will occur if system is improperly charged. On
new system installations, charge system per tabular data sheet for
the matched coil and follow guidelines in this instruction.

Example: The pressure P and temperature T measured at the liquid
service port is 360 Psig and 93°F. From Table 2, the saturated tem-
perature for 360 Psig is 109°. The subcooling temperature TC =
109°-93°=16°F

FIGURE 13:

Heat Pump Flow Diagram

TXV
(Cooling)

SHOWN IN COOLING POSITION.

COOLING CYCLE FLOW

HEATING CYCLE FLOW

INDOOR COIL

4-WAY
REVERSING
VALVE

SUCTION
ACCUMULATOR

COMPRESSOR

OUTDOOR
COIL

FIELD CONNECTED LINE

FILTER DRYER
(Solid core)

LIQUID
SENSOR

FIELD CONNECTED LINE

TXV
(Heating)

361819-YIM-A-0208

Unitary Products Group

SECTION VIII: SYSTEM OPERATION

For more information on the control operation, refer to “Operation
Instructions - DEMAND DEFROST CONTROL BOARD in this Booklet.

REQUIRED CONTROL SETUP

IMPORTANT: The following steps must be taken at the time of
installation to insure proper system operation.

Consult system wiring diagram to determine proper thermostat
wiring for your system.

If hot heat pump configuration is desired, change HOT HEAT
PUMP jumper to ON position.

If installation includes a fossil fuel furnace, change FFUEL jumper
to ON position.

Set low temperature cutout (LTCO), balance point (BP), switch
point (SP), and Y2 Lock jumpers as desired.

Verify proper system functionality. Confirm room thermostat opera-
tion including fault code display capability.

Upon completion of installation, verify that no fault codes are
stored in memory. Clear the fault code memory if necessary.

DEFROST OPERATION

The following defrost curve selection jumper positions are set from fac-
tory.

INDICATIONS OF PROPER OPERATION

Cooling

Cooling operation is the same as any conventional air conditioning unit.

The outdoor fan should be running, with warm air being dis-
charged from the top of the unit.

The indoor blower (furnace or air handler) will be operating, dis-
charging cool air from the ducts. Coils or other parts in the air cir-
cuit should be cleaned as often as necessary to keep the unit
clean. Use a brush, vacuum cleaner attachment, or other suitable
means.

The vapor line at the outdoor unit will feel cool to the touch.

The liquid line at the outdoor unit will feel warm to the touch.

Heating

Indications of proper Heating operation is as follows:

The outdoor fan should be running, with cool air being discharged
from the top of the unit.

The indoor blower (furnace or air handler) will be operating, dis-
charging warm air from the ducts.

The vapor line at the outdoor unit will feel warm to the touch.

The liquid line at the outdoor unit will feel cool to the touch.

SECTION IX: INSTRUCTING THE OWNER

Assist owner with processing warranty cards and/or online registration.
Review Owners Guide and provide a copy to the owner and guidance
on proper operation and maintenance. Instruct the owner or the opera-
tor how to start, stop and adjust temperature setting.

When applicable, instruct the owner that the compressor is equipped
with a crankcase heater to prevent the migration of refrigerant to the
compressor during the “OFF” cycle. The heater is energized only when
the unit is not running. If the main switch is disconnected for long peri-
ods of shut down, do not attempt to start the unit until 8 hours after the
switch has been connected. This will allow sufficient time for all liquid
refrigerant to be driven out of the compressor.

The installer should also instruct the owner on proper operation and
maintenance of all other system components.

MAINTENANCE

Dirt should not be allowed to accumulate on the outdoor coils or
other parts in the air circuit. Clean as often as necessary to keep
the unit clean. Use a brush, vacuum cleaner attachment, or other
suitable means.

The outdoor fan motor is permanently lubricated and does not
require periodic oiling.

If the coil needs to be cleaned, it should be washed with Calgon
Coilclean (mix one part Coilclean to seven parts water). Allow
solution to remain on coil for 30 minutes before rinsing with clean
water. Solution should not be permitted to come in contact with
painted surfaces.

Refer to the furnace or air handler instructions for filter and blower
motor maintenance.

The indoor coil and drain pan should be inspected and cleaned
regularly to prevent odors and assure proper drainage.

TABLE 1:

Defrost Initiate Curves

Defrost Curve Selection

Jumper Position

Heat Pump Model

N/A

3 Ton

N/A

IT IS UNLAWFUL TO KNOWINGLY VENT, RELEASE OR DIS-
CHARGE REFRIGERANT INTO THE OPEN AIR DURING
REPAIR, SERVICE, MAINTENANCE OR THE FINAL DIS-
POSAL OF THIS UNIT.
WHEN THE SYSTEM IS FUNCTIONING PROPERLY AND
THE OWNER HAS BEEN FULLY INSTRUCTED, SECURE
THE OWNER’S APPROVAL.

TABLE 2:

R-410A Saturation Properties

TEMP.

PRESSURE

PSIG

TEMP.

PRESSURE

PSIG

TEMP.

PRESSURE

PSIG

TEMP.

PRESSURE

PSIG

TEMP.

PRESSURE

PSIG

129.70

169.60

217.40

274.10

105

340.50

132.20

172.60

220.90

278.20

106

345.30

134.60

175.50

224.40

282.30

107

350.10

137.10

178.50

228.00

286.50

108

355.00

139.60

181.60

231.60

290.80

109

360.00

142.20

184.60

235.30

295.10

110

365.00

144.80

187.70

239.00

299.40

111

370.00

147.40

190.90

242.70

303.80

112

375.10

150.10

194.10

246.50

308.20

113

380.20

152.80

197.30

250.30

312.70

114

385.40

155.50

200.60

254.10

100

317.20

115

390.70

158.20

203.90

258.00

101

321.80

116

396.00

161.00

207.20

262.00

102

326.40

117

401.30

163.90

210.60

266.00

103

331.00

118

406.70

166.70

214.00

270.00

104

335.70

119

412.20

361819-YIM-A-0208

Unitary Products Group

SECTION X: WIRING DIAGRAM

FIGURE 14:

Wiring Diagram

Subject to change without notice. Printed in U.S.A.

361819-YIM-A-0208

Supersedes: 128596-YIM-A-0505

Unitary

5005

Norman

Product

York

Group

Drive

73069