Enertech YT024 User manual

Installation & Operations Manual
YT MODELS PACKAGED WATER-TO-AIR MULTI-POSITIONAL HEAT PUMPS
REVISION:B
20D218-01NN
20D218-01NN
Scan or Click
Here for YouTube
InstallationVideo
Flex Connector Flex Connector
Supply Air
Return and Supply Air Duct System
Maintain supply
ange duct size
for 12”minimum
vertical height
Return Air
Equipment Pad
2” Polyethylene Foam

Table of Contents
SECTION 1: MODEL NOMENCLATURE & AHRI PERFORMANCE DATA
Nomenclature Decoder ...................................................................................................................... 4
AHRI Performance Data ...................................................................................................................... 4
SECTION 2: INSTALLATION INTRODUCTION
Introduction ........................................................................................................................................... 5
Un-packaging ...................................................................................................................................... 5
Pre-Installation ....................................................................................................................................... 6
Components ......................................................................................................................................... 6
SECTION 3: INSTALLATION CONSIDERATIONS
Consumer Instructions ......................................................................................................................... 7
Unit Placement...................................................................................................................................... 8
Typical Supply and Return Ductwork Connections........................................................................... 9
SECTION 4: UNIT DATA INFORMATION
Dimensional Data and Installation Clearances............................................................................... 10
Unit Dimensional Data........................................................................................................................ 10
Side and Back Discharge Dimensional Data................................................................................... 11
ECM Fan Performance - Two-Stage Compressor Units................................................................... 12
Unit Physical Data ............................................................................................................................... 12
Unit Electrial Data ............................................................................................................................... 14
SECTION 5: GENERAL UNIT ASSEMBLY
Pre-Installation Checklist .................................................................................................................... 15
Field Selectable Return Air Pattern ................................................................................................... 15
Control Box Installation....................................................................................................................... 16
Return Duct Flange Kit Installation .................................................................................................... 21
Optional Filter Rack Kit Installation .................................................................................................... 21
SECTION 7: UNIT PIPING INSTALLATION
Water Quality ...................................................................................................................................... 23
Interior Piping....................................................................................................................................... 24
Condensation Drain Connection...................................................................................................... 24
Typical Pressurized Flow Center Installation ..................................................................................... 24
Flushing & Charging a Pressurized Flow Center............................................................................... 24
Pressurized Flow Center and Pump Mounting ................................................................................. 26
Typical Non-Pressurized Flow Center Installation ............................................................................. 29
Antifreeze Overview .......................................................................................................................... 30
Antifreeze Charging ........................................................................................................................... 31
APSMA Pump Sharing Module ......................................................................................................... 33
Open Loop Piping and Connections................................................................................................ 34
SECTION 8: DESUPERHEATER INSTALLATION
Desuperheater Installation................................................................................................................. 36
Desuperheater Installation with Single Water Heater ..................................................................... 38
Desuperheater Installation with Preheat Tank ................................................................................. 38
SECTION 9: AUXILIARY HEATER INSTALLATION
Auxiliary Heater Nomenclature Decoder......................................................................................... 39
Heater Electrical Data........................................................................................................................ 43
SECTION: 10 ELECTRICAL CONNECTIONS
High and Low Voltage Single Phase Connections .......................................................................... 44

SECTION 11: CONTROLS
Microprocessor Features and Operations........................................................................................ 45
Safety Controls .................................................................................................................................... 46
Temperature Sensor Operating Range ............................................................................................ 47
Fault Retry ............................................................................................................................................ 47
LED Identication ................................................................................................................................ 48
Diagnostics: ......................................................................................................................................... 49
Sequence of Operation: ................................................................................................................... 49
Factory Installed Soft Start Option..................................................................................................... 50
SECTION 12: SOFT START CONTROLS
Soft Start Module ................................................................................................................................ 51
Wiring Diagram ................................................................................................................................... 51
Mode of Operation ............................................................................................................................ 52
Mode of Operation (Voltage Interuptions) ...................................................................................... 54
Mode of Operation (Voltage Dips) ................................................................................................... 55
LED Status Indication .......................................................................................................................... 56
SECTION 13: WIRING DIAGRAMS
Two Stage, ECM, 208/230V 60Hz, Single Phase Residential............................................................ 57
Two Stage, ECM, DSH, 208/230V, 60Hz, Single Phase Residential/Commercial ........................... 58
Two Stage, ECM, 208/230V,60Hz, Single Phase Commercial ......................................................... 59
Two Stage, ECM, 208/230V, 60Hz, Three Phase Commercial ......................................................... 60
Two Stage, ECM, DSH, 208/230V, 60Hz, Three Phase Commercial ................................................ 61
Two Stage, ECM, 460V, 60Hz, Three Phase Commercial................................................................. 62
Two Stage, ECM, DSH, 460V, 60Hz, Three Phase Commercial........................................................ 63
SECTION 14: EQUIPMENT START-UP PROCEDURES
Equipment Start-Up Process............................................................................................................... 64
Equipment Start-Up Form................................................................................................................... 65
Heat of Extraction/Heat of Rejection Tables.................................................................................... 66
Pressure Drop Tables ........................................................................................................................... 67
Performance Check........................................................................................................................... 67
SECTION 15: TROUBLESHOOTING
QR Codes for Installation or Troubleshooting Tip Videos ................................................................ 68
Operating Parameters ....................................................................................................................... 69
Compressor Troubleshooting ............................................................................................................. 70
Refrigeration Troubleshooting............................................................................................................ 71
Superheat/Subcooling Conditions.................................................................................................... 71
Troubleshooting Worksheet................................................................................................................ 72
Troubleshooting Tips............................................................................................................................ 73
SECTION 16: WARRANTY FORMS
Claim Form .......................................................................................................................................... 76
Registration Form ................................................................................................................................ 77

4
Enertech Global IOM, YT Models
SECTION 1: MODEL NOMENCLATURE & AHRI PERFORMANCE DATA
Nomenclature Decoder
GROUND WATER HEAT PUMP
MODEL Full Load Cooling Full Load Heating Part Load Cooling Part Load Heating
Btu/hr EER Btu/hr COP Btu/hr EER Btu/hr COP
YT024 29,200 25.7 23,400 5.3 22,200 33.6 17,500 5.5
YT036 44,300 27.0 37,500 5.5 32,700 37.4 26,600 5.8
YT048 57,100 26.2 49,500 5.2 44,100 35.3 35,900 5.5
YT060 68,700 24.8 61,700 4.9 51,900 33.4 42,900 5.2
YT072 77,600 23.2 71,100 4.6 60,800 29.5 52,100 4.8
Note:
Rated in accordance with ISO Standard 13256-1 which includes Pump Penalties.
Heating capacities based on 68.0°F DB, 59.0°F WB entering air temperature.
Cooling capacities based on 80.6°F DB, 66.2°F WB entering air temperature.
GLHP - Entering water temperatures Full Load: 32°F heating / 77°F cooling.
GLHP - Entering water temperatures Part Load: 41°F heating / 68°F cooling.
GWHP - Entering water temperatures: 50°F heating / 59°F cooling.
GROUND LOOP HEAT PUMP
MODEL Full Load Cooling Full Load Heating Part Load Cooling Part Load Heating
Btu/hr EER Btu/hr COP Btu/hr EER Btu/hr COP
YT024 27,100 19.9 19,000 4.3 21,400 28.2 15,200 4.8
YT036 41,200 20.9 29,100 4.5 31,500 31.3 23,300 5.1
YT048 53,300 20.2 39,900 4.3 42,600 29.6 32,000 4.9
YT060 64,300 19.3 49,200 4.1 50,000 28.0 37,700 4.6
YT072 71,900 18.0 56,200 3.8 58,500 24.8 45,800 4.4
AHRI Performance Data

5
IOM, YT Models Enertech Global
SECTION 2: INSTALLATION INTRODUCTION
Introduction
This geothermal heat pump provides heating
and cooling as well as optional domestic water
heating capability. Engineering and quality
control is built into every geothermal unit. Good
performance depends on proper application
and correct installation. All YT Models do not
have more than 2% air leakage
Notices, Cautions, Warnings, & Dangers
“NOTICE” Notication of installation, operation
or maintenance information which is important,
but which is NOT hazard-related.
“CAUTION” Indicates a potentially hazardous
situation or an unsafe practice which, if not
avoided, COULD result in minor or moderate
injury or product or property damage.
“WARNING” Indicates potentially hazardous
situation which, if not avoided, COULD result in
death or serious injury.
“DANGER” Indicates an immediate hazardous
situation which, if not avoided, WILL result in
death or serious injury.
Inspection:
Upon receipt of any geothermal equipment,
carefully check the shipment against the
packing slip and the freight company bill of
lading. Verify that all units and packages have
been received. Inspect the packaging of
each package and each unit for damages.
Insure that the carrier makes proper notation of
any and all damages or shortage on all bill of
lading papers. Concealed damage should be
reported to the freight company within 15 days.
If not led within 15 days the freight company
can deny all claims.
Note: Notify Enertech Global’s shipping
department of all damages within 15 days. It
is the responsibility of the purchaser to le all
necessary claims with the freight company.
Un-packaging
Enertech units are mounted to wooden
pallets for easy handling during shipment and
installation. Units are protected during shipment
with durable cardboard corner posts, top and
⚠ NOTICE ⚠
PRIOR TO OPERATING THE UNIT, REMOVE AND
DISCARD THE BLOWER MOTOR ARMATURE
SUPPORT BRACKET LOCATED ON THE BACK
OF THE BLOWER. IF APPLICABLE, REMOVE
AND DISCARD THE BLOWER SHIPPING
BRACKET LOCATED ON THE BOTTOM OR SIDE
OF THE BLOWER HOUSING.
FAILURE TO REMOVE THESES BRACKETS
COULD RESULT IN NOISY OPERATION AND
EQUIPMENT DAMAGE.
⚠ CAUTION ⚠
ALL GEOTHERMAL EQUIPMENT UNLESS
SPECIFIED “OUTDOOR” IS DESIGNED FOR
INDOOR INSTALLATION ONLY. DO NOT
INSTALL OR STORE UNIT IN A CORROSIVE
ENVIRONMENT OR IN A LOCATION WHERE
TEMPERATURE AND HUMIDITY ARE SUBJECT TO
EXTREMES.
USE OF EQUIPMENT NOT CERTIFIED AND
MARKED FOR OUTDOOR APPLICATION WILL
VOID ALL WARRANTIES.
⚠ WARNING ⚠
FAILURE TO FOLLOW THIS CAUTION MAY
RESULT IN PERSONAL INJURY. USE CARE AND
WEAR APPROPRIATE PROTECTIVE CLOTHING,
SAFETY GLASSES AND PROTECTIVE GLOVES
WHEN SERVICING UNIT AND HANDLING
PARTS.
⚠ CAUTION ⚠
BEFORE DRILLING OR DRIVING ANY SCREWS
INTO CABINET, CHECK TO BE SURE THE
SCREW WILL NOT HIT ANY INTERNAL PARTS OR
REFRIGERANT LINES.

6
Enertech Global IOM, YT Models
SECTION 2: INSTALLATION INTRODUCTION
air coil panels. Shrink wrap is applied covering
the entire unit and attachment to the pallet.
Upon receipt of the unit carefully remove the
shrink wrap. Using a box cutter slit the shrink
wrap on the cardboard top and corner posts.
Use caution to not damaged the nished
surface of the unit. Keep all cardboard or
other packaging material for safe storage and
transport to the job site prior to installation.
Remove the front compressor section service
panel to locate technical documents; manuals,
bulletins or instructions and accessory items;
HWG piping kits, supply/return duct ange kits
or condensate tubing kits prior to installation.
Unit Protection:
Protect units from damage and contamination
due to plastering (spraying), painting and
all other foreign materials that may be used
at the job site. Keep all units covered on the
job site with either the original packaging or
equivalent protective covering. Cap or recap
unit connections and all piping until unit is
installed. Precautions must be taken to avoid
physical damage and contamination which
may prevent proper start-up and may result in
costly equipment repair.
Storage:
All geothermal units should be stored inside in
the original packaging in a clean, dry location.
Units should be stored in an upright position
at all times. Units should not be stacked unless
specially noted on the packaging.
Removal and Disposal
Geothermal units removed from service should
have all components, oils, antifreeze and
refrigerants properly disposed of according to
all local and national environmental recycling
codes, regulations, standards and rules.
Pre-Installation
Special care should be taken in locating
the geothermal unit. Installation location
chosen should include adequate service
clearance around the unit. All vertical units
should be placed on a formed plastic air pad,
or a high density, closed cell polyethylene
pad slightly larger than the base of the unit.
Flex connectors should also be installed in
between the ductwork and the unit. All units
should be located in an indoor area where
the ambient temperature will remain above
55°F and should be located in a way that
piping and ductwork or other permanently
installed xtures do not have to be removed
for servicing and lter replacement.
Pre-Installation Steps:
1. Compare the electrical data on the unit
nameplate with packing slip and ordering
information to verify that the correct unit
has been shipped.
2. Remove any packaging used to support or
hold the blower during shipping. Remove
and discard the blower support bracket
(if equipped) and motor armature shaft
shipping bracket from the rear of the
blower.
3. Remove and discard the air coil protective
shipping cover (if eqipped).
4. Inspect all electrical connections and
wires. Connections must be clean and
tight at the terminals, and wires should not
touch any sharp edges or copper pipe.
4. Verify that all refrigerant tubing is free of
dents and kinks. Refrigerant tubing should
not be touching other unit components.
5. Before unit start-up, read all manuals and
become familiar with unit components
and operation. Thoroughly check the unit
before operating.
6. Determine discharge and return air
patterns prior to unit assembly and
installation
⚠ CAUTION ⚠
DO NOT OPERATE THE GEOTHERMAL
HEAT PUMP UNIT DURING BUILDING
CONSTRUCTION PHASE.
Components
Master Contactor: Energizes Compressor
and optional Hydronic Pump and/or
Desuperheater package.
Logic Board: Logic Board operates the

7
IOM, YT Models Enertech Global
SECTION 2: INSTALLATION INTRODUCTION
SECTION 3: INSTALLATION CONSIDERATIONS
Consumer Instructions
Dealer should instruct the consumer in proper
operation, maintenance, lter replacements,
thermostat and indicator lights. Also provide
the consumer with the manufacturer’s Owner's
Manual for the equipment being installed.
Enertech Global D-I-Y Policy: Enertech
Global’s geothermal heat pumps and system
installations may include electrical, refrigerant
and/or water connections. Federal, state and
local codes and regulations apply to various
aspects of the installation. Improperly installed
equipment can lead to equipment failure and
health/safety concerns. For these reasons, only
qualied technicians should install a Enertech
Global built geothermal system.
compressor and protects unit by locking out
when safety switches are engaged. It also
provides fault indicator(s).
Terminal Strip: Provides connection to the
thermostat or other accessories to the low
voltage circuit.
Transformer: Converts incoming (source)
voltage to 24V AC.
Low Voltage Breaker: Attached directly to
transformer, protects the transformer and low
voltage circuit.
Reversing Valve: Controls the cycle of the
refrigerant system (heating or cooling).
Energized in cooling mode.
High Pressure Switch: Protects the refrigerant
system from high refrigerant pressure, by locking
unit out if pressure exceeds setting.
Low Pressure Switch: Protects the refrigerant
system from low suction pressure, if suction
pressure falls below setting.
Electric Heater: Provides auxiliary heat during
cold temperatures and provides electric
backup if unit malfunctions.
Blower Motor (ECM): ECM (Electronically
Commutated Motor) for variable fan speeds.
Because of the importance of proper installation,
Enertech Global does not sell equipment direct
to homeowners. Internet websites and HVAC
outlets may allow for purchases directly by
homeowners and do-it-yourselfers, but Enertech
Global offers no warranty on equipment that is
purchased via the internet or installed by persons
without proper training.
Enertech Global has set forth this policy
to ensure installations of Enertech Global
geothermal systems are done safely and
properly. The use of well-trained, qualied
technicians helps ensure that your system
provides many years of comfort and savings.
Equipment Installation: Special care should
be taken in locating the unit. All vertical units
should be placed on a vibration absorbing pad
(air pad) slightly larger than the base of the
unit. Flex connectors should also be installed in
between the ductwork and the unit. All units
should be located in an indoor area were the
ambient temperature will remain above 55°F
and should be located in a way that piping
and ductwork or other permanently installed
xtures do not have to be removed for servicing
and lter replacement.
Electrical: All wiring, line and low voltage,
should comply with the manufacturer's
recommendations, The National Electrical
Code, and all local codes and ordinances.
Thermostat: Thermostats should be installed
approximately 54 inches off the oor on an
inside wall in the return air pattern and where
they are not in direct sunlight at anytime.
Loop Pumping Modules: Must be wired to the
heat pump’s electric control box. A special
entrance knockout is provided below the
thermostat entrance knockout. A pump
module connection block, connected to
the master contactor, and circuit breaker is
provided to connect the Pump Module wiring.
Desuperheater Package: Water heating is
standard on all residential units (units may be
ordered without). It uses excess heat, during
both heating and cooling cycles, to provide
hot water for domestic needs. A double wall

8
Enertech Global IOM, YT Models
The use of conrner pads alone is not
recommended.
3. The installer has veried that all applicable
wiring, ductwork, piping, and accessories
are correct and on the job site.
4. Determine left or right side return air pattern
prior to unit assembly and installation
SECTION 3: INSTALLATION CONSIDERATIONS
desuperheater exchanger (coil) located
between the compressor and the reversing
valve, extracts superheated vapor to heat
domestic water; while satisfying its heating and
cooling needs. The water circulation pump
comes pre-mounted in all residential units, but
must be electrically connected to the master
contactor. Leaving it unconnected ensures that
the pump is not run without a water supply.
The Desuperheater package can make up to
60% (depending on heat pump usage) of most
domestic water needs, but a water heater is still
recommended.
Desuperheater Piping: All copper tubes & ttings
should be 5/8” O.D (1/2” nom) minimum with a
maximum of 50ft separation. Piping should be
insulated with 3/8” wall closed cell insulation.
Note: Copper is the only approved material for
desuperheater piping.
UV Light Usage:
The use of a UV light in the unit return air plenum
should be such that the light does not have
a direct line of sight to the air coil of the unit.
UV lights could cause internal wiring, foam
insulation, or other components to deteriorate.
It would be better to place the UV light in
the supply air plenum, or ductwork. This also
helps keep the light cleaner. Additionally, if a
humidier is installed and in line of the sight of
the UV light, consult the humidier install manual
for indication of whether the light will deteriorate
any parts of the humidier (like the pad).
Unit Placement
When installing a geothermal heating and
cooling unit, there are several items the installer
should consider before placing
the equipment.
1. Service Access and Installation Space. Is
there enough space for service access?
A general rule of thumb is at least 2 to
2 1/2 feet on the front and air coil sides
depending on return ductwork size.
2. Unit Air Pad. All vertical geothermal
heating and cooling equipment should be
placed on either a formed plastic air pad,
or a high density, closed cell polyethylene
pad. This helps eliminate vibration noise
that could be transmitted through the oor.
Flex Connector Flex Connector
Supply Air
Return and Supply Air Duct System
Maintain supply
ange duct size
for 12”minimum
vertical height
Return Air
Equipment Pad
2” Polyethylene Foam

9
IOM, YT Models Enertech Global
DUCT WORK
All new ductwork shall be designed as
outlined in Sheet Metal and Air Conditioning
Contractors National Association (SMACNA)
or Air Conditioning Contractors of America
(ACCA) or American Society of Heating,
Refrigerating and Air Conditioning Engineers
(ASHRAE) handbooks. All YT Models do not
have more than 2% air leakage
All supply/return plenums should be isolated
from the unit by a exible connector (canvas)
or equivalent to prevent transfer of vibration
noise to the ductwork. The ex connector
should be designed so as not to restrict airow.
Turning vanes should be used on any transition
with airow over 500 CFM. All metal ductwork
should be insulated on the inside to prevent
heat loss/gain, condensation and to absorb air
noise. If the unit is being installed with existing
ductwork, the ductwork must be designed
to handle the air volume required by the unit
being installed. When running a cooling or
heating load on a building, size ductwork
accordingly to the building design load and
heat pump CFM.
Industry Standard: When sizing ductwork use
400 CFM per Ton.
As a general rule, maximum recommended
face velocity for a supply outlet used in a
residential application is 750 FPM. Maximum
recommended return grille velocity is 600 FPM.
Systems with higher velocity, are likely to have
noise problems.
In buildings where ceilings are 8 feet or more,
at least 50 percent of the return air should be
taken back to the heat pump from the ceiling
or high sidewall location and not more than 50
percent from the oor or low sidewall location.
Location Supply Return
Main Ducts 900 FPM 600 FPM
Branch Ducts 700 FPM 600 FPM
Grills, Registers, Diffusers 750 FPM 600 FPM
Table 1: Maximum Air Velocities
Flex Connector Flex Connector
Supply Air
Return and Supply Air Duct System
Maintain supply
ange duct size
for 12”minimum
vertical height
Return Air
Equipment Pad
2” Polyethylene Foam
Typical Supply and Return Ductwork
Connections
SECTION 3: INSTALLATION CONSIDERATIONS

10
Enertech Global IOM, YT Models








REVISION HISTORY
REV DESCRIPTION ECN DATE APPROVED
A ADD YT024 INFORMATION 15-181-N13 6/22/15 BDL
S
TX
Y
Z
U
B
A1
A2
F
D
G
FRONT VIEW
LEFT VIEW
E
1.00
C
J
KM
1.00H
E
L
Enertech Recommends a Minimum of
2 to 2.5 Feet of Service/Installation
Access at Front and Air Coil Side
N
P
R
E
TOP VIEW
TOP VIEW
Showing Optional Filter Rack
HWG
WATER IN
HWG
WATER OUT
SOURCE
WATER OUT
SOURCE
WATER IN
W
G:\Drafting\Drawings\Released-Production\PDF\20D800-01NN REVA
Dimensional Data and Installation Clearances
SECTION 4: UNIT DATA INFORMATION
A1 *B C A2 D E F H J K L M N P R
024 46.0 23.0 26.5 53.25 25.0 20.0 19.1 3.63 11.62 12.5 7.44 1.05 2.34 3.00 3.63
036-048 54.0 25.4 30.5 61.2 28.0 26.0 23.7 2.25 16.0 16.0 7.26 1.60 2.34 3.29 2.25
060-072 58.4 25.4 30.5 65.6 32.0 26.0 24.0 2.25 16.0 16.0 7.26 1.60 2.34 3.29 2.25
Notes:
Source water loop - residential models use 1" double
S T U W
X
Y Z o-rin
g
fittin
g
s, commercial models use 1" FPT fittin
g
s.
024 8.28 13.63 9.63 9.0 10.31 14.75 6.00 All measurements are in inches.
036-048 8.41 14.73 9.63 9.0 11.44 17.44 6.00 All Desuperheater
(
HWG
)
connections are 3/4" FPT fittin
g
s.
060-072 5.56 12.21 9.63 12.2 14.63 17.88 6.00 Electrical connect. are 1" for high voltage, 1/2" for low voltage.
*B (Unit Width) excludes field installed factory supplied flanges.
G:\Drafting\Drawings\Released-Production\IPT-IDW-IAM\20D800-01NN YT DATA SPREADSHEET REVA.xsls
Optional Filter Rack
G
1.92
2.34
2.34
Model Supply Air Flange
Without Control
Box
With
Control
Box
Return Air Flange
HWG WaterModel Source Water Drain
Ht.
Unit Dimensional Data

11
IOM, YT Models Enertech Global





REVISION HISTORY
REV DESCRIPTION ECN DATE APPROVED
A ADD SIDE-BACK DISCH 15-255-N01 9/21/15 BDL
CONFIGURED AS
SIDE DISCHARGE
Note:
Side and Back Discharge configurations are only available in 036 through 072 models.
G:\Drafting\Drawings\Released-Production\PDF\20D800-14NN REVA
6.56
7.25
TYP.
16.0
16.0
CONFIGURED AS
BACK DISCHARGE
16.0
6.56
4.70
TYP.
16.0
SIDE DISCHARGE BACK DISCHARGE
SECTION 4: UNIT DATA INFORMATION
Side and Back Discharge Dimensional Data

12
Enertech Global IOM, YT Models
ECM Fan Performance - Two-Stage Compressor Units
SECTION 4: UNIT DATA INFORMATION
1st 2nd 1st 2nd 1st 2nd S1 S2 S3 S4 S5 S6 S7 S8
A 790 1100 780 1040 670 880 520 1230 OFF OFF OFF OFF OFF OFF OFF OFF
B 780 1010 770 1030 650 840 450 1190 ON OFF OFF OFF ON OFF OFF OFF
C 670 900 670 890 510 760 420 1130 OFF ON OFF OFF OFF ON OFF OFF
D 640 840 650 840 480 710 410 1100 ON ON OFF OFF ON ON OFF OFF
A 1250 1520 1230 1560 1070 1330 760 1760 ON OFF ON OFF ON OFF OFF OFF
B 1130 1380 1130 1420 970 1210 690 1480 ON OFF OFF OFF ON OFF OFF OFF
C 1030 1240 1010 1280 870 1080 620 1310 ON OFF OFF ON ON OFF OFF OFF
D 930 1130 930 1170 800 990 500 1210 ON ON OFF OFF ON ON OFF OFF
A 1570 1970 1680 1880 1440 1590 930 2020 OFF OFF ON OFF OFF OFF OFF OFF
B 1420 1790 1530 1710 1310 1440 850 1880 OFF OFF OFF OFF OFF OFF OFF OFF
C 1280 1600 1380 1540 1180 1290 770 1690 OFF OFF OFF ON OFF OFF OFF OFF
D 1090 1370 1280 1420 1090 1200 690 1500 ON OFF OFF OFF ON OFF OFF OFF
A 1870 2160 1800 2170 1500 1825 1050 2380 OFF OFF ON OFF OFF OFF OFF OFF
B 1680 1960 1610 1960 1370 1660 950 2170 OFF OFF OFF OFF OFF OFF OFF OFF
C 1500 1750 1450 1770 1230 1490 850 1950 OFF OFF OFF ON OFF OFF OFF OFF
D 1220 1440 1300 1580 740 1690 OFF ON OFF OFF OFF ON OFF OFF
A‐‐‐‐‐‐‐‐
‐‐‐‐‐‐‐‐
B 1870 2160 1800 2170 1500 1830 1050 2390 OFF OFF ON OFF OFF OFF OFF OFF
C 1680 1960 1610 1960 950 2180 OFF OFF OFF OFF OFF OFF OFF OFF
D 1500 1750 1450 1770 850 1960 OFF OFF OFF ON OFF OFF OFF OFF
Notes:
S9 S10
ON OFF
OFF ON
OFF OFF
ON ON
Notes:
2.MaxESPincludesallowanceforwetcoilandNOFILTER
3.Powermustbeofftotheunitforatleast3secondsbeforetheECMmotorwillrecognizeaprogramchange.
4.MaxESPfor*YT024modelswithinternalelectricheatis0.5";for*YT036and*YT048itis0.6";for*YT060and*YT072itis0.7".ExceedingtheMaxESPmayresultinnuisancetripsofthe
electricheat.Thermallimitsareratedat100,000cycles.
5.*YT060modelswith10kWinternalelectricheatcannotbesetonthe'D'program.
TOOLOW
1.2 TOOLOW
TOOLOW
1.ProgramB(BoldType)isfactorysettingsandratedCFM.CFMiscontrolledwithin5%uptotheMaxESP.
*YTSeriesECMBlowerPerformanceData:Two‐StageCompressorUnits
Program3HeatingMode CoolingMode Dehumidification
Mode FanOnly
AUX/
EMG
Heat
DIPSwitchSettings
1.4
1.1
1.1
1.2
Mode
Normal Dehumidificationmodedisabled(NormalHtg/ClgCFM)‐‐Factorysetting.
ConstantDehum
NotUsed
ConstantDehumidificationmode(alwaysusesdehumCFMforcoolingandnormalCFMfor
heating)‐‐Nohumidistatrequired.
Notanapplicableselection.
1.Toenterdehumidificationmode,ODDinputshouldbe0VAC;fornormalcoolingCFM,ODDinputshouldbe24VAC.
2.HeatingCFMisnotaffectedbydehumidificationmode.Whenindehumidificationmode,coolingCFMis85%ofnormalCFM.
ODD OnDemandDehumidificationmode(humidistatinputatterminalODD)‐‐Humidistat
required.
Operation
060
072
*YTSeriesDehumidificationModeOptions
DIPSwitch
024
036
048
Model
Max
ESP
in.w.c.2
Unit Physical Data
Notes:
Source water loop - residential models use 1” double o-ring ttings, commercial models use 1” FPT ttings.
All measurements are in inches.
All Desuperheater connections are 3/4” FPT.
Electrical connections are 1” for high voltage, 1/2” for low voltage
* Width excludes eld installed factory supplied anges.
YT Unit Physical Data
Model Number 024 036 048 060 072
Fan Wheel (in.) 10 x 8
11 x 10 11 x 10 11 x 10 11 x 10
Fan Motor ECM (HP) 3/4 3/4 3/4 1 1
Refrigerant Charge (oz.) 56 80 87 94 94
Face Area (Sq. Ft.) 3.51 4.76 4.76 5.65 5.65
Dimensions (in.) 25.5 x 19.8 x 1
Number of Rows
Unit Weight lbs (shipping) 300 415 450 475 480
G:\Drafting\Drawings\Released-Production\IPT-IDW-IAM\20D800-10NN REVA UNIT PHYSICAL DATA.xlsx
28.9 x 23.7 x 1.26
32.8 x 24.8 x 1.26
N/A - Micro-Channel Coil
Dual Capacity Vertical
Air Coil

13
IOM, YT Models Enertech Global
The blower performance data in the ECM
Blower Performance table is WITHOUT FILTER.
To determine the approximate blower
performance WITH FILTER apply the lter
pressure drop value for the lter being used or
calculate the pressure drop as follows:
Below is typical lter performance data
and should only be used as a guideline.
Actual performance may vary between
manufacturers.
Model
Height
(in.)
Width
(in.)
Area
(ft
2
)
Filter
Type
Thickness
(in)
Rated
Velocity
(fpm)
Initial
Resistance
(in.w.c.)
024 26 21 3.8 MERV 8 1300 0.21
036 MERV 11 2500 0.24
048 MERV 13 2500 0.43
060
072
Return Size
28
26
32
26
5.1
5.8
Model
Height
(in.)
Width
(in.)
Area
(ft
2
)
Filter
Type
Thickness
(in)
Rated
Velocity
(fpm)
Initial
Resistance
(in.w.c.)
024 26 21 3.8 MERV 8 1300 0.21
036 MERV 11 2500 0.24
048 MERV 13 2500 0.43
060
072
Return Size
28
26
32
26
5.1
5.8
To calculate lter pressure drop:
Applying Filter Pressure Drop to Determine Total
ESP
To determine the Total ESP of a unit with the
lter in place, follow the steps below:
1. Select the lter type and determine Rated
Velocity and Initial Resistance
2. For the model being considered determine
Max ESP, CFM and Return Area
3. Determine Filter pressure drop (ΔPs) using
the equation above
4. Measure (or calculate) the ESP without lter
in place
5. Calculate Total ESP = Measured ESP + Filter
Pressure Drop
FILTER PERFORMANCE:
6. Total ESP should be less than or equal to
Max ESP
Example: For an YT060 at an air ow of 1960
CFM calculate the lter pressure drop with a
2” MERV 11 lter and determine Total ESP and
compare to Max ESP.
CFM = 1960
Area = 5.8 ft2
Rated Velocity = 500 fpm
Initial Resistance = 0.24 in.w.c.
Measured ESP without lter = 0.53
1. 1960 CFM ÷ 5.8 ft2 = 338 fpm
2. 338 fpm ÷ 500 fpm = 0.676
3. 0.676 x 0.24 in.w.c. = 0.16 in.w.c. = Filter
Pressure Drop
4. Total ESP is 0.53 + 0.16 = 0.69 in.w.c. which is
less than the 1.2 in.w.c. Max ESP
Example: For an YT036 at an air ow of 1420
CFM calculate the lter pressure drop with a
2” MERV 13 lter and determine Total ESP and
compare to Max ESP.
CFM = 1420
Area = 5.1 ft2
Rated Velocity = 500 fpm
Initial Resistance = 0.43 in.w.c.
Measured ESP without lter = 0.53
1. 1420 CFM ÷ 5.1 ft2 = 278 fpm
2. 278 fpm ÷ 500 fpm = 0.556
3. 0.556 x 0.43 in.w.c. = 0.24 in.w.c. = Filter
Pressure Drop
4. Total ESP is 0.36 + 0.24 = 0.6 in.w.c. which is
less than the 1.1 in.w.c. Max ESP

14
Enertech Global IOM, YT Models
Notes:
1. All line and low voltage wiring must adhere to the National Electrical Code and local codes, whichever is the most stringent.
2. Wire length based on a one way measurement with a 2% voltage drop.
3. Wire size based on 60°C copper conductor and minimum circuit ampacity.
3. All fuses class RK-5.
4. Min/Max Voltage: 208/230/60/1 = 187-252, 208/230/60/3 = 187-252, 460/60/3 = 432-504
5. See Example Electrical Circuits for proper 460V power
* The external loop pump FLA is based on a maximum of three UP26-116F-230V pumps (1/2hp) for 048 - 072 and two pumps for 024 - 036.
Unit Electrial Data
SECTION 4: UNIT DATA INFORMATION
20D237‐08NN:YTElectricalData
Volts Phase LRA RLA
00 208/230 1 58.3 11.7 5.2 0.0 0.0 16.9 19.8 30 14 38
01 208/230 1 58.3 11.7 5.2 0.5 0.0 17.4 20.3 30 12 57
10 208/230 1 58.3 11.7 5.2 0.0 4.0 20.9 23.8 35 12 47
11 208/230 1 58.3 11.7 5.2 0.5 4.0 21.4 24.3 35 12 46
20 208/230 3 55.4 6.5 5.2 0.0 0.0 11.7 13.3 20 14 55
21 208/230 3 55.4 6.5 5.2 0.5 0.0 12.2 13.8 20 14 52
30/35 460 3 28.0 3.5 4.7 0.0 0.0 8.2 9.4 10 14 78
00 208/230 1 83.0 15.3 5.2 0.0 0.0 20.5 24.3 40 12 48
01 208/230 1 83.0 15.3 5.2 0.5 0.0 21.0 24.8 40 12 47
10 208/230 1 83.0 15.3 5.2 0.0 4.0 24.5 28.3 40 10 68
11 208/230 1 83.0 15.3 5.2 0.5 4.0 25.0 28.8 40 10 66
20 208/230 3 73.0 11.6 5.2 0.0 0.0 16.8 19.7 30 14 38
21 208/230 3 73.0 11.6 5.2 0.5 0.0 17.3 20.2 30 12 57
30/35 460 3 38.0 5.7 4.7 0.0 0.0 10.4 11.8 15 14 62
00 208/230 1 104.0 21.2 5.2 0.0 0.0 26.4 31.7 50 8 97
01 208/230 1 104.0 21.2 5.2 0.5 0.0 26.9 32.2 50 8 95
10 208/230 1 104.0 21.2 5.2 0.0 5.5 31.9 37.2 50 8 80
11 208/230 1 104.0 21.2 5.2 0.5 5.5 32.4 37.7 50 8 79
20 208/230 3 83.1 14.0 5.2 0.0 0.0 19.2 22.7 35 12 52
21 208/230 3 83.1 14.0 5.2 0.5 0.0 19.7 23.2 35 12 50
30/35 460 3 41.0 6.4 4.7 0.0 0.0 11.1 12.7 15 14 58
00 208/230 1 152.9 27.1 6.9 0.0 0.0 34.0 40.8 60 6 120
01 208/230 1 152.9 27.1 6.9 0.5 0.0 34.5 41.3 60 6 118
10 208/230 1 152.9 27.1 6.9 0.0 5.5 39.5 46.3 70 6 103
11 208/230 1 152.9 27.1 6.9 0.5 5.5 40.0 46.8 70 6 102
20 208/230 3 110.0 16.5 6.9 0.0 0.0 23.4 27.5 40 10 71
21 208/230 3 110.0 16.5 6.9 0.5 0.0 23.9 28.0 45 10 69
30/35 460 3 52.0 7.2 6.0 0.0 0.0 13.2 15.0 20 14 48
00 208/230 1 179.2 29.7 6.9 0.0 0.0 36.6 44.0 70 6 111
01 208/230 1 179.2 29.7 6.9 0.5 0.0 37.1 44.5 70 6 110
10 208/230 1 179.2 29.7 6.9 0.0 5.5 42.1 49.5 70 6 96
11 208/230 1 179.2 29.7 6.9 0.5 5.5 42.6 50.0 80 6 95
20 208/230 3 136.0 17.6 6.9 0.0 0.0 24.5 28.9 45 10 68
21 208/230 3 136.0 17.6 6.9 0.5 0.0 25.0 29.4 45 10 66
30/35 460 3 66.1 8.5 6.0 0.0 0.0 14.5 16.6 25 14 44
Total
Unit FLA
Min
Circuit
AMPS
Model
Voltage
Code/ HWG
Option
60 Hz Power Max
Fuse
HACR
Min
AWG Max Ft
YT024
YT036
YT048
Compressor Fan
Motor
FLA
HWG
Pump
FLA
Ext.
Loop
Pump
FLA
YT060
YT072

15
IOM, YT Models Enertech Global
Pre-Installation Checklist
BEFORE YOU FULLY INSTALL THE GEOTHERMAL
EQUIPMENT, IT IS RECOMMENDED YOU GO
THROUGH THIS QUICK CHECKLIST BEFORE PLAC-
ING THE EQUIPMENT.
⧠Fully inspect the unit after unpacking.
⧠Open both the air handler section and
compressor section and remove any
packaging material or documentation
included in the unit.
⧠Maintain the installation instructions
included with any kits for installation during
unit assembly.
⧠Remove and discard any blower housing
supports and the motor armature shaft
shipping bracket from the rear of the
blower.
⧠Remove and discard the blower housing
bottom M shaped shipping bracket
⧠ Locate and review the Equipment Start-Up
Procedures and Forms from this manual
and have it available as the unit installation
proceeds.
⧠ Clean the air coil with soap and water
solution to remove any oil or dirt.
SECTION 5: GENERAL UNIT ASSEMBLY
This unit is a eld selectable return air unit. The
unit will come already set up for a left hand
return. The source and hot water generator
connections are on the air coil side of the unit,
Field Selectable Return Air Pattern
under the air coil itself. These connections are
easier to facilitate if done prior to the tting
of the return air drop. The condensate drain
is eld selectable and will be discussed in the
“CONDENSATE DRAIN TUBE INSTALLATION”
section later in this document.
If the unit needs to be changed to a right hand
return conguration, please complete the
following:
1. Using a at blade, remove the front center
insert panel. Place the at blade in the gap
on one side and gently pull out. (Refer to
the picture in step 2 of the following Control
Box Installation section).
2. Remove the lower then the upper front
doors. (Use caution to support the doors as
the screws are removed to avoid dropping
the panels).
3. Once the doors are removed, the plate
behind the center insert panel (same color
as the unit) will be exposed. This will need
to be removed, so it can be placed on the
back side of the unit for panel attachment
in the right hand return conguration.
4. Remove the rear bottom and top doors.
5. At this point the front and rear doors should
be completely removed from the unit.
6. Take the panel that was removed from
behind the front center insert panel, and
re-install it in the same location in the back
side of the unit. There should be a total of
(5) screws.
7. Remove all shipping brackets. Proceed to
the “CONTROL BOX INSTALLATION” section,
unless the unit has a factory installed soft
start module. If the unit has a factory
installed soft start module, it will need to be
moved from the front right corner to the
back right corner of the unit, so proceed to
the “SOFT START CONVERSION - RIGHT HAND
RETURN- ” section.

16
Enertech Global IOM, YT Models
SECTION 5: GENERAL UNIT ASSEMBLY
4. Viewing the right side of the unit, remove
the control box shipping bracket from the unit
and from the control box. This will require the
removal of 4 screws.
5. Remove bracket from the
control box and discard.
1. This unit should look similar to what is shown
below after removing all cardboard and
plastic wrap on unit and in front of the air coil.
2. Remove the center insert panel on the front
of the unit by inserting a at blade in the gap
on one side and gently prying open as shown in
the picture below.
3. Remove the outer doors from the unit. Units
are shipped with the control box in the unit air
handler section.
Control Box Installation

17
IOM, YT Models Enertech Global
6. Mounting the control box requires removal
of the selected (left or right return) top cover
access ller plate. Make sure to keep the (4)
screws for future use.
7. Remove the blower motor/blower wheel
bracket and the blower housing bracket at this
time. Remove both brackets with (2) screws
from each bracket. Once removed discard.
8. Pass the control box asm. up through the
opening in the top cover.
SECTION 5: GENERAL UNIT ASSEMBLY

18
Enertech Global IOM, YT Models
9. The front edge of the control box asm. should
hang over the front edge of the top cover as
shown below.
10. Locate and then open the small ller plate
kit found in the bottom of the unit.
11. Slide the small ller plate into the slot at the
bottom rear of the control box asm. This plate
will cover and insulate the remainder of the
access opening of the control box asm.
12. Assemble the small ller plate using the (4)
screws provided.
13. Remove the control front from the control
box asm. by removing two screws (1 on each
side). Be sure to keep these two screws as they
will be used when the control front is assembled
back onto the control box asm.
SECTION 5: GENERAL UNIT ASSEMBLY

19
IOM, YT Models Enertech Global
14. Assemble the control box asm to the top
of the unit by aligning the screw holes in the
control box asm to the top cover, insert and
start screws. Align, insert, and tighten these (3)
screws.
15. Conrm that the position of the unit wiring in
the air handler section is well placed and does
not come into contact with the blower wheel/
motor or any sharp edges. Leave the wiring
bundle as two separate bundles as shown
below. If the wiring needs additional bundling,
use the extra plastic tie straps provided.
16. If this is a left hand return unit move to
Step 19. If this is a right hand return unit,
relocate the control box asm to the other side
of the unit as shown in the next few steps. Then
assemble the control box asm. to the top of the
unit using the previous steps shown above. Start
by removing the front plate behind the center
insert panel.
SECTION 5: GENERAL UNIT ASSEMBLY

20
Enertech Global IOM, YT Models
17. Move the control box asm. into place by
sliding it under the blower housing to what will
become the front of the unit when congured
as a right hand return unit.
18. Once the control box asm. has been
relocated under the blower housing to what
is now the front of the unit as a right hand
return, assemble it through the opening in the
top cover and onto the top of the unit per the
previous steps 8 through 14.
19. Be sure to reassemble the front plate
(behind the center insert panel) to the new
front of the unit if this is a right hand return unit.
If it is a left hand return unit, this front plate was
not previously removed.
While panels are still removed continue unit
assembly by proceeding to the instructions for
Condensate Drain Tube Installation or Soft Start
Conversion, Right Hand Return sections on the
immediately following pages.
If no further assembly is required reassemble all
panels, the control box cover, and doors that
were removed from the unit before unit startup.
The door with the logo will be the top front
door and the bottom door without a handle
will be the bottom front door. You have how
completed the control box installation.
SECTION 5: GENERAL UNIT ASSEMBLY