Enertech BS018 User manual

Installation & Operations Manual
BS/BT MODELS SPLIT SYSTEM WATER-TO-AIR HEAT PUMPS
REVISION: A
20D218-15NN
20D218-13NN

Table of Contents
Section 1: Model Nomenclature and AHRI Data
Model Nomenclature...............................................................................................................3,4
AHRI Performance Data ............................................................................................................5
Section 2: Installation Introduction
Introduction: ...............................................................................................................................6
Components:..............................................................................................................................7
Section 3: Installation Considerations
Consumer Instructions: .............................................................................................................8
Unit Placement:..........................................................................................................................9
Typical Duct work Connection Setup: ......................................................................................10
Section 4: Equipment Data Information
Unit Dimensional Data ............................................................................................................. 11
A Coil Dimensional and Physical Data.....................................................................................12
Unit Physical Data....................................................................................................................13
Unit Electrical Data ..................................................................................................................14
Air Handler Electrical Data.......................................................................................................15
Section 5: Line Set Installation
Introduction with Line Sets and measurements, etc ........................................................... 17-25
Section 6: Unit Piping Installation
Water Quality, Flow Center Installation, Typical Connections, etc ..................................... 26-37
Section 7: Desuperheater Installation
Desuperheater Fitting Kit .........................................................................................................38
Section 8: Electrical Connections
High and Low Voltage Single Phase Control Box Connections ...............................................39
Section 9: Controls
Controls, features, LED Table, etc ..................................................................................... 40-45
Section 10: Wiring Diagrams
Single or Two Stage Residential/Commercial Wiring Diagrams ........................................ 46-50
Section 11: Equipment Start-Up Procedures
Equipment Start-Up and Procedures..................................................................................51-54
Section 12: Troubleshooting
QR Codes Troubleshooting Videos, Compressor Troubleshooting, Data, etc ................... 55-59
Section 13: Troubleshooting
Refrigeration Troubleshooting............................................................................................ 60-62
Section 14: Warranty Forms
Warranty Order and Claim .......................................................................................................63
Warranty Registration ..............................................................................................................64

3
IOM, BS/BT Models Enertech Global
Section 1: Model Nomenclature and AHRI Performance Data
Unit Model Nomenclature Decoder
Air Handler Model Nomenclature Decoder

4
Enertech Global IOM, BS/BT Models
Section 1: Model Nomenclature and AHRI Performance Data
Cased”A” Coil Model Nomenclature Decoder
Uncased ”A” Coil Model Nomenclature Decoder

5
IOM, BS/BT Models Enertech Global
AHRI Performance Data, BS/BT Cased/Uncased Coil
UNIT Rating
TYPE
F/L
COOL
F/L
EER
F/L
HEAT
F/L
COP P/L COOL P/L EER
P/L
HEAT
P/L
COP
BS018
WL
TBD TBD TBD TBD TBD TBD TBD TBD
GW
GL
BT024
WL
GW
GL
BT036
WL
GW
GL
BT048
WL
GW
GL
BT060
WL
GW
GL
BT072
WL 65,100 14.7 75,400 4.3 51,200 15.8 59,100 4.8
GW 72,300 21.7 62,800 3.9 57,700 26.4 49,400 4.2
GL 67,800 16.9 50,300 3.4 55,800 22.5 42,600 3.8
AHRI Performance Data, BS/BT Air Handler
UNIT Rating
TYPE
F/L
COOL
F/L
EER
F/L
HEAT
F/L
COP P/L COOL P/L EER
P/L
HEAT
P/L
COP
BS018
WL
TBD TBD TBD TBD TBD TBD TBD TBD
GW
GL
BT024
WL
GW
GL
BT036
WL
GW
GL
BT048
WL
GW
GL
BT060
WL
GW
GL
BT072
WL 65,500 14.3 77,200 4.3 52,200 16.2 59,700 4.8
GW 73,900 20.8 64,800 4.0 58,800 27.5 49,300 4.2
GL 69,900 16.4 52,000 3.4 56,700 23.2 43,800 3.8
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
Entering water temperatures Full Load: 68°F heating / 86°F cooling
Section 1: Model Nomenclature and AHRI Performance Data

6
Enertech Global IOM, BS/BT Models
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.
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 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 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 damage 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 appropriate
unit service panels to locate technical documents
and accessory items 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 local and national
environmental recycling codes, regulations,
standards and rules.
⚠ CAUTION ⚠
DO NOT OPERATE THE GEOTHERMAL
HEAT PUMP UNIT DURING BUILDING
CONSTRUCTION PHASE.
Section 2: Installation Introduction

7
IOM, BS/BT Models Enertech Global
Pre-Installation
Special care should be taken in locating the
geothermal unit. Installation location chosen should
include adequate service clearance around the unit.
All compressor bearing units should be placed on
a formed plastic air pad, or a high density, closed
cell polystyrene pad slightly larger than the base of
the unit. Flex connectors should also be installed in
between the ductwork and the air handling 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. Open both, compressor and blower sections and
remove any packaging material or documentation
included in the units. At this time you can remove
any packaging used to support or hold the blower
during shipping. Remove and discard the blower
motor shaft shipping bracket from the rear of the
blower.
3. 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 pipes.
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.
Components
Master Contactor energizes compressor and
optional hydronic pump and/or desuperheater pump
package.
Logic Board operates the 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 Circuit Breaker attached directly to
the 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.
Flow Switch (Freeze Protection Device) protects
the water heat exchanger from freezing by shutting
down the compressor if water ow decreases. (Not
installed in all units)
Compressor pumps refrigerant through the heat
exchangers and pressurizes the refrigerant, which
increases the temperature of the refrigerant.
Section 2: Installation Introduction
⚠ CAUTION ⚠
ALL GEOTHERMAL EQUIPMENT 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. EQUIPMENT IS NOT CERTIFIED
FOR OUTDOOR APPLICATIONS.
SUCH INSTALLATION WILL VOID ALL
WARRANTIES.

8
Enertech Global IOM, BS/BT Models
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
systems 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 an Enertech Global built
geothermal system.
Because of the importance of proper installation,
Enertech Global does not sell equipment directly 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. Down ow units should be placed on
a non-combustible base. 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
duct work 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
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 disconnected
ensures that the pump will 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
piping the desuperheater.
Section 3: Installation Considerations

9
IOM, BS/BT Models Enertech Global
Duct Work
All new ductwork shall be designed as outlined in
the 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 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 velocities 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.
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 in
the front and air coil sides depending on return
ductwork size.
2. Unit Air Pad
All geothermal heating and cooling equipment
should be placed on either, a formed plastic air
pad, or a high density, closed cell polyethylene
pad. Down ow units should be placed on a non-
combustible base. This helps eliminate vibration
noise that could be transmitted through the oor.
The use of corner pads alone is not
recommended.
3. REVIEW
The installer has veried that all applicable
wiring, ductwork, piping, and accessories are
correct and on the job site.
4. Unit Orientation
Congure left or right side return and discharge
air pattern prior to air handler unit installation.
⚠ NOTICE ⚠
WHEN MATCHING AN ST048 OR ST060
WITH AN MPD060B, REFER TO THE
CFM CHART IN THE ENGINEERING
SECTION FOR THE PROPER
AIRFLOW JUMPER SETTINGS.
Section 3: Installation Considerations
Table 1: Maximum Air Velocities
Location Supply Return
Main Ducts 900 FPM 600 FPM
Branch Ducts 700 FPM 600 FPM
Grills, Registers, Diffusers 750 FPM 600 FPM

10
Enertech Global IOM, BS/BT Models
Flex Connector
Return Air
Flex Connector
Supply Air
Air Handler
Return Air Plenum
Return and Supply Air Duct System
Typical Supply and Return
Ductwork Connections
The air handling unit comes with an ECM blower
motor. For maximum performance, the blower speed
should be set to maintain between 350 and 450
CFM/ton. Changing the wires (for PSC) at the blower
will change the blower speed.
Section 3: Installation Considerations
AHRI Air Handler and “A” Coil Matches
Unit Physical Data
Section 4: Unit Data Information
UNIT PHYSICAL DATA - BS / BT
Model Number BS018 BT024 BT036 BT048 BT060 BT072
Connection Size (I.D.)
Liquid - Vapor 3/8" - 5/8" 3/8" - 5/8" 3/8" - 5/8" 3/8" - 3/4" 3/8" - 7/8" 3/8" - 7/8"
Source Water Conn. (Resid.) 1" Dbl. O-Ring 1" Dbl. O-Ring 1" Dbl. O-Ring 1" Dbl. O-Ring 1" Dbl. O-Ring 1" Dbl. O-Ring
Source Water Conn. (Comm.) 1" FPT 1" FPT 1" FPT 1" FPT 1" FPT 1" FPT
HWG Water (if applicable) 3/4" FPT 3/4" FPT 3/4" FPT 3/4" FPT 3/4" FPT 3/4" FPT
Refrigerant Charge (oz.) * TBD TBD TBD 93 TBD 93
Unit Weight TBD TBD TBD TBD 245 246
Tare Weight 22 22
Shipped Weight #VALUE! #VALUE! #VALUE! #VALUE! 267 267
Corner A #VALUE! #VALUE! #VALUE! #VALUE! 74 74
Corner B #VALUE! #VALUE! #VALUE! #VALUE! 63 63
Corner C #VALUE! #VALUE! #VALUE! #VALUE! 58 58
Corner D #VALUE! #VALUE! #VALUE! #VALUE! 49 50
* Always check the unit data plate for specific charge volume.
AB
CD
B:\ENGINEERING\RECORDS\Component Drawings\PDF\20D808-02NN REVB
REV ECN Date Name
A16-072-N16 12/30/2016 M. TRIPP
B1/23/2017 M. TRIPP
Split - BS/BT Compressor Section
Single Stage
Scroll Compressor
Compressor Type Dual Stage Unloading Scroll Compressor
Changed Lineset size needed (O.D.) to
Connection size (I.D.) Liquid - Vapor
UNIT WEIGHT DATA (lbs)
Unit Front
Description of Change
CREATED TABLE AND
ADDED WEIGHTS FOR 060-072
Revision History
Compressor
Section
Air Handler
Match
A-Coil
Match
018 MPD024A ACD024B
024 MPD024A ACD024B
036 MPD036A ACD036B
048 MPD060B ACD060C
060 MPD060B ACD060C
072 MPD072A ACD060C

11
IOM, BS/BT Models Enertech Global
Dimensional Data and Installation Clearances
Section 4: Equipment Data
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DESUPERHEATER
PUMP ON/OFF SWITCH
T'STAT
CONNECTION
EXTERNAL
PUMP SUPPLY
POWER SUPPLY
T-STAT
CONNECTION
EXTERNAL
PUMP SUPPLY
POWER SUPPLY
P
D
E
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Enertech Recommends A Minimum of 2
to 2 1/2 Feet of Service Area Clearance
For Installation And Maintenance.
MODEL SIZE 018-072
CABINET
OVERALL
A 26.000
B 26.000
C 21.000
WATER
CONNECTIONS
D 3.000
E 8.000
F 11.125
G 13.875
LINE-SET
CONNECTIONS
H 16.375
J 18.875
ELECTRICAL
KNOCKOUTS
K 13.875
L 15.625
M 17.625
N 4.625
O 6.625
P 10.625
Q 15.875
Notes:
All desuperheater connections are 3/4” FPT.
All electrical knockouts are sized 1/2” or 3/4”
conduit.
All measurements are in inches.
All drawings are typical, individual models may vary.

12
Enertech Global IOM, BS/BT Models
Air Handler Dimensional and Physical Data
Model
Size
(tons)
All Dimensions in Inches
A B C D E F G H J K L M N P R
MPD024A 2 17 5/8 43 21 15 5/8 12 1/2 13 1/2 11 6 3/4 16 3/4 14 10 3/4 10 3/4 2 1 1/2 5
MPD036A 3 21 1/8 48 21 19 12 1/2 15 3/8 13 6 3/4 20 17 12 3/4 10 1/4 2 1/4 4 3/8 5
MPD060B 4 - 5 24 5/8 58 7/8 21 3/4 22 1/4 14 1/4 19 3/4 17 1/4 6 3/4 26 23 16 3/4 14 3/8 4 1/4 4 3/8 4 1/2
MPD072A 6 24 5/8 58 7/8 21 3/4 22 1/4 14 1/4 19 3/4 17 1/4 6 3/4 26 23 16 3/4 14 3/8 4 1/4 4 3/8 4 1/2
Return Air Opening
Model Width Depth
MPD024A 15 1/2 19 3/4
MPD036A 19 3/4 19 3/4
MPD060B 23 1/2 20 3/4
MPD072A 23 1/2 20 3/4
Shown with
optional
eld-installed
electric heat
Shown with
optional eld-
installed electric
heat
Line Set
Connection
Primary Drain
(Horizontal)
Primary Drain
(Vertical)
Alternate
Drain
(Horizontal)
Alternate
Drain
(Vertical)
Section 4: Equipment Data

13
IOM, BS/BT Models Enertech Global
A Coil Dimensional and Physical Data
A
C
B
⚠ WARNING ⚠
IF USING A DUAL FUEL
APPLICATION, “A” COIL MUST BE
INSTALLED ON THE OUTLET OF
THE FURNACE. INSTALLATION
ON THE RETURN COULD CAUSE
FURNACE HEAT EXCHANGER
FAILURE, AND MAY VOID
FURNACE WARRANTY.
NOTES:
1. The AC series coils are designed as high efciency “A” coils to be
installed on new and existing indoor furnaces. These coils may be used
in up ow and down ow applications.
2. Coils are ETL and CSA approved.
3. Primary and secondary drain connections are available on the LH or RH
side of the drain pan, and are 3/4” FPT. Center line of drains located
from pan corner, 1 1/2” for primary and 3 1/2” for secondary.
4. Drain pan is injection molded high temperature UL approved plastic.
5. All coils are equipped with factory-installed TXV, 15% bleed type.
Model
Size
(tons)
All Dimensions in Inches
A B C Liquid Suction
ACD024B 2 16 5/8 19 14 1/2 3/8 3/4
ACD036B 3 19 5/8 19 18 1/2 3/8 3/4
ACD060C 4 - 6 23 3/4 20 1/2 27 7/8 3/8 7/8
Model Size
(Tons)
All Dimensions In Inches (nominal) Weight
(lbs...)
A B C D E F G H I J K L M N O P Q
024 2 17.5 21.0 20.0 15.2 19.2 2.1 4.1 1.8 2.3 11.1 8.5 13.8 9.2 11.0 3.3 .88 .38 45
036 3 21.0 21.0 24.0 18.7 19.2 2.2 4.3 1.8 2.3 12.9 10.6 15.7 11.9 14.2 3.3 .88 .38 50
060 5 24.5 22.0 34.0 22.0 19.9 2.2 4.2 1.9 2.3 17.3 12.8 19.8 24.8 26.8 3.3 .88 .38 72
Section 4: Equipment Data

14
Enertech Global IOM, BS/BT Models
Section 4: Equipment Data
Unit Electrical Data
20D23716NN:BS/BTElectricalData
Volts Phase LRA RLA
00 208/230 1 48.0 9.0 0.0 0.0 0.0 9.0 11.3 20
01 208/230 1 48.0 9.0 0.0 0.5 0.0 9.5 11.8 20
10 208/230 1 48.0 9.0 0.0 0.0 4.0 13.0 15.3 20
11 208/230 1 48.0 9.0 0.0 0.5 4.0 13.5 15.8 25
00 208/230 1 58.3 11.7 0.0 0.0 0.0 11.7 14.6 25
01 208/230 1 58.3 11.7 0.0 0.5 0.0 12.2 15.1 25
10 208/230 1 58.3 11.7 0.0 0.0 4.0 15.7 18.6 30
11 208/230 1 58.3 11.7 0.0 0.5 4.0 16.2 19.1 30
20 208/230 3 55.4 6.5 0.0 0.0 0.0 6.5 8.1 15
21 208/230 3 55.4 6.5 0.0 0.5 0.0 7.0 8.6 15
00 208/230 1 83.0 15.3 0.0 0.0 0.0 15.3 19.1 30
01 208/230 1 83.0 15.3 0.0 0.5 0.0 15.8 19.6 35
10 208/230 1 83.0 15.3 0.0 0.0 4.0 19.3 23.1 35
11 208/230 1 83.0 15.3 0.0 0.5 4.0 19.8 23.6 35
20 208/230 3 73.0 11.6 0.0 0.0 0.0 11.6 14.5 25
21 208/230 3 73.0 11.6 0.0 0.5 0.0 12.1 15.0 25
00 208/230 1 104.0 21.2 0.0 0.0 0.0 21.2 26.5 45
01 208/230 1 104.0 21.2 0.0 0.5 0.0 21.7 27.0 45
10 208/230 1 104.0 21.2 0.0 0.0 5.5 26.7 32.0 50
11 208/230 1 104.0 21.2 0.0 0.5 5.5 27.2 32.5 50
20 208/230 3 83.1 14.0 0.0 0.0 0.0 14.0 17.5 30
21 208/230 3 83.1 14.0 0.0 0.5 0.0 14.5 18.0 30
00 208/230 1 152.9 27.1 0.0 0.0 0.0 27.1 33.9 60
01 208/230 1 152.9 27.1 0.0 0.5 0.0 27.6 34.4 60
10 208/230 1 152.9 27.1 0.0 0.0 5.5 32.6 39.4 60
11 208/230 1 152.9 27.1 0.0 0.5 5.5 33.1 39.9 60
20 208/230 3 110.0 16.5 0.0 0.0 0.0 16.5 20.6 35
21 208/230 3 110.0 16.5 0.0 0.5 0.0 17.0 21.1 35
00 208/230 1 179.2 29.7 0.0 0.0 0.0 29.7 37.1 60
01 208/230 1 179.2 29.7 0.0 0.5 0.0 30.2 37.6 60
10 208/230 1 179.2 29.7 0.0 0.0 5.5 35.2 42.6 70
11 208/230 1 179.2 29.7 0.0 0.5 5.5 35.7 43.1 70
20 208/230 3 136.0 17.6 0.0 0.0 0.0 17.6 22.0 40
21 208/230 3 136.0 17.6 0.0 0.5 0.0 18.1 22.5 40
BS018
BT024
BT036
BT048
BT060
BT072
Notes:
1. All line and low voltage wiring must adhere to the National Electrical Code and local codes, whichever is the most
stringent.
2. In determining the correct supply wire size and maximum length, reference NFPA 70, Section 310. If the calculation is
close to the maximum allowable ampacity of a particular wire size, use the next size up. This will ensure that no adverse
effects occur, such as light dimming and/or shortened compressor life.
3. All fuses class RK-5.
4. Min/Max Voltage: 208/230/60 = 187-252
*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 018-036.
Voltage
Code/ HWG
Option
60 Hz Power Compressor Fan
Motor
FLA
HWG
Pump
FLA
Ext.
Loop
Pump
FLA
Total
Unit FLA
Min
Circuit
AMPS
Max
Fuse
HACR
Model

15
IOM, BS/BT Models Enertech Global
.40" .60" .80" .40" .60" .80" .40" .60" .80"
AA ‐920 920 910 820 810 800 420 410 400
BB ‐910 900 900 750 740 720 370 360 350
CC ‐910 900 900 710 700 670 350 340 330
DD ‐820 800 800 680 660 640 330 320 310
A A Norm 930 930 920 830 820 810 420 410 410
B B Norm 930 920 890 770 750 730 380 370 360
C C Norm 870 860 820 710 700 670 360 350 330
D D Norm 870 840 810 700 680 650 350 340 330
A A + 930 930 920 930 930 920 470 460 460
B B + 930 930 900 880 860 830 440 430 420
C C + 930 930 890 810 800 760 410 400 380
D D + 930 930 890 800 780 750 400 390 370
AA ‐1510 1500 1490 1290 1270 1260 540 530 520
BB ‐1450 1430 1420 1120 1100 1090 410 400 400
CC ‐1200 1150 1150 900 890 890 350 340 330
DD ‐1060 1040 1030 820 800 800 N/A N/A N/A
A A Norm 1560 1560 1510 1450 1450 1430 570 540 500
B B Norm 1550 1550 1520 1240 1240 1230 480 430 410
C C Norm 1300 1310 1310 1010 1010 1010 400 350 300
D D Norm 1150 1150 1140 880 870 870 320 290 N/A
A A + 1560 1560 1510 1570 1570 1520 670 630 620
B B + 1550 1550 1520 1430 1430 1430 560 530 490
C C + 1530 1520 1500 1160 1160 1160 450 400 380
D D + 1320 1320 1320 1020 1020 1010 400 350 300
AA ‐1710 1700 1690 1420 1410 1400 860 850 850
BB ‐1610 1600 1580 1330 1320 1300 810 800 790
CC ‐1350 1340 1330 1130 1110 1100 680 670 660
DD ‐1260 1250 1230 1060 1040 1030 640 630 620
A A Norm 2180 2170 2120 1810 1810 1780 1160 1140 1140
B B Norm 2020 2020 2000 1680 1680 1660 1090 1090 1050
C C Norm 1710 1700 1690 1410 1410 1400 950 930 910
D D Norm 1570 1570 1550 1320 1300 1270 910 990 960
A A + 2240 2170 2120 1890 1860 1820 1290 1270 1250
B B + 2230 2170 2110 1900 1870 1850 1220 1200 1190
C C + 1940 1920 1910 1610 1610 1600 1030 1020 980
D D + 1810 1800 1750 1500 1500 1470 1000 980 950
AA ‐2400 2400 2390 2040 2040 2030 1020 1020 1010
BB ‐2400 2400 2390 1860 1860 1850 930 930 910
CC ‐1640 1630 1610 1190 1180 1170 610 590 570
DD ‐1450 1450 1440 1060 1060 1040 550 530 510
A A Norm 2510 2510 2500 2510 2510 2500 1300 1300 1270
B B Norm 2500 2460 2420 2340 2340 2330 1160 1160 1140
C C Norm 2080 2070 2050 1530 1520 1500 700 620 530
D D Norm 1850 1850 1830 1330 1330 1310 570 460 420
AA+
B B + 2570 2510 2450 2570 2510 2550 1390 1390 1370
C C + 2380 2370 2360 1780 1750 1730 820 760 690
D D + 2160 2130 2120 1540 1520 1500 720 640 540
Notes:
4.AboveCFMwillbemaintainedupto0.50"ESPformodelsMPD024and036,andupto0.75"ESPformodelsMPD048and060.
1.DehumidificationmodecanbeenabledbycuttingthejumperontheECMboard.Whencut,coolingCFMisreducedby15%,andheating/auxiliaryheatCFM
remainsunchanged.Example:Model036withHEATandCOOLjumpersonCsettingandADJUSTjumperonNormsettingwouldrunat1115CFMwithjumper
cut,insteadof1310CFMwithjumperintact.
2.Grayshadedareasarerecommendedsettings.Othersettingsmaybeused,dependinguponapplication.DONOTcutdehumidificationjumperifCFMsetting
willcauseairflowtobebelow250CFMpertononfirststage,andbelow325CFMpertononsecondstage. Example:Model036shouldnotrunbelow750CFMin
friststage,orbelow975CFMinsecondstage.
3.TheCOOLandHEATjumpersshouldbothbesetatthesameposition.COOLcontrolsheatingandcoolingairflow;HEATcontrolselectricheatairflow.
FANG
ST024withMPD024A
Changeto:
COOLJumperC
HEATJumperC
ADJUSTJumper‐
ST036withMPD036A
Changeto:
COOLJumperC
HEATJumperC
ADJUSTJumperNorm
ST048withMPD060B
Changeto:
COOLJumperC
HEATJumperC
ADJUSTJumperNorm
ST060withMPD060B
ShipSetOn:
COOLJumperB
HEATJumperB
ADJUSTJumperNorm
ST072withMPD072A
Changeto:
COOLJumperC
HEATJumperC
ADJUSTJumper+NotAvailable
ModelNumber COOL
Jumper
HEAT
Jumper
ADJUST
Jumper
HighSPDCFMY2 LowSPDCFMY1
Section 4: Equipment Data
MPD Air Handler Fan Speeds

16
Enertech Global IOM, BS/BT Models
Model
60 HZ Power Field-Installed Elect Heat Motor Amps
/ HP
Minimum
Circuit
Ampacity2
Maximum
Fuse
Size2
Volts Phase # Circuits kW1
MPD024A 208/230 1 None 0 2.8 / 0.33 3.5 10
1 10 54.9 60
MPD036A 208/230 1
None 0
4.3 / 0.50
5.4 10
1 10 56.4 60
2 15 30.3 / 56.4 40 / 70
MPD060B 208/230 1
None 0
6.8 / 1.0
8.5 15
1 10 58.9 70
2 15 32.8 / 58.9 40 / 70
2 20 58.9 / 58.9 70 / 70
MPD072A 208/230 1
None 0
6.8 / 1.0
8.5 15
1 10 58.9 70
2 15 32.8 / 58.9 40 / 70
220 58.9 / 58.9 70 / 70
Air Handler Electrical Data
Notes:
1. Nominal kW at 240V. Derate 25% for 208V.
2. Units with eld-installed electric heat 15kW and larger have two circuits. Data shown as “XX/
XX” refers to circuit 1 before the “/” and circuit 2 after the “/”
3. Always refer to unit nameplate data prior to installation
Section 4: Equipment Data

17
IOM, BS/BT Models Enertech Global
Section 5: Line Set Installation
Introduction
The purpose of this section is to help in the design
of refrigeration line sets on geothermal heat pump
systems. The three considerations when designing
a refrigerant piping system are as follows:
1. System Reliability: Poor Oil Management may
shorten the life of the compressor. Proper liquid
refrigerant control is essential.
2. System Performance: Pressure drop in
refrigerant lines tends to decrease capacity and
increase power consumption. High velocities can
increase sound levels.
Modulation often depends on proper piping.
3. Cost: Level of refrigerant, copper piping,
accessories, and labor used will impact the applied
cost.






    
   
Liquid Line
Vapor Line
3/8"
Filter Drier
Provided
With Unit
Line Set Filter Drier Installation
Table 2: Recommended Line Set Sizes
Unit
Size
Unit Refrigerant
Connections
Line Set Size For
AHRI Rating
25 Feet
Liquid
Line (I.D)
Vapor
Line (I.D)
Liquid
Line (O.D)
Vapor
Line (O.D)
018 3/8 5/8 3/8 5/8
024 3/8 5/8 3/8 5/8
036 3/8 5/8 3/8 5/8
048 3/8 3/4 3/8 3/4
060 3/8 7/8 3/8 7/8
072 3/8 7/8 3/8 7/8
Note:
Vapor line is sized for proper velocity to ensure
oil return and shall not be downsized or up sized
regardless of line set length.
Limit on vapor line lengths are the same as that on
the liquid line lengths.
Table 3: Weights of Refrigerant in Pipes
Weight of Refrigerant in Copper Lines
Per 10 Feet
Liquid Line
(O.D.)
Oz. Per 10
Feet
Vapor Line
(O.D)
Oz. Per
10Feet
3/8” 5.4 5/8” 0.7
1/2” 10.4 3/4” 1.0
5/8” 19.5 7/8” 1.3
Filter Drier Installation
A reversible heat pump lter drier must be installed
on the liquid line near the cabinet of the compressor
section. A 3/8” Filter Drier is provided with the unit.
The installer will need to cut a short piece off of the
liquid line set that is to be installed so that the lter
drier can be attached.
NOTE: Always use dry nitrogen when brazing.
Line Set Requirements/Limitations
Use rated line set sizes listed in this unit installation
manual and remember you should never downsize
or up size the line set size when installing an
Enertech Global Split System.
Fittings and Components
All piping should be “ACR” or “L” type copper pipe.
Long radius ttings should always be used unless
there is not enough physical space.
Pressure drop due to friction in pipe, ttings
and eld installed accessories such as a lter
drier, solenoid valve or other devices should be
considered. (See table 4)
Line Set Requirements/Limitations
Use rated line set sizes listed in this unit installation
manual and remember you should never downsize
or up size the line set size when installing an
Enertech Global Split System.
Denitions
Long line set applications are dened as any line
set that includes 50 feet or more of interconnecting
tubing or a vertical distance of 20 feet between the
air handler and compressor section.
(See Maximum Pipe Length and Figures 2-5 for
details)

18
Enertech Global IOM, BS/BT Models
Section 5: Line Set Installation
Equivalent Length
Each valve, tting and bend contributes to friction
pressure drop because of the interruption of smooth
ow. Because it can be difcult to calculate the
pressure drop for each tting and valve it is more
useful to equate the pressure drop to an equivalent
length of straight pipe for each tting. This allows for
a quick calculation of the total equivalent length (see
Example 1).
The equivalent length of copper tubing for
commonly used ttings, valves, and lter-drier are
shown in Table 4.
Linear Length
The total length of liquid line or vapor line between
the condenser and evaporator.
Linear Liquid Lift
The sum of all vertical liquid lines.
(See gures 2 and 3)
Linear Vapor Rise
This is the sum of all vertical vapor lines.
Limitations are the same as linear liquid lift.
(See gures 2 and 3)
Maximum Pipe Lengths
Maximum Equivalent Length = 75 feet
Maximum Linear Length = 50 feet
Maximum Linear Liquid Lift (when air handler is
above compressor section) = 20 feet
Maximum Linear Liquid Lift (when compressor
section is above air handler) = 10 feet
Piping Limitations
Bi-ow liquid line solenoid valve and crankcase
heater are required when equivalent length is
greater than or equal to 50 feet or when 20 feet
of vertical separation is between the compressor
section and air handler.
Note: The equivalent length of ttings and
accessories must be included to calculate the
overall equivalent length but not included to
gure out vertical liquid lift or vapor rise.
Table 4: Equivalent Lengths in Feet
Equivalent Length in Feet of Straight Pipe
For Valves, Fittings and Filter Driers
Line
Size
O.D.
In.
90°
Long
Radius
Elbow
45°
Long
Radius
Elbow
90°
Short
Radius
Elbow
45°
Short
Radius
Elbow
Liquid
Solenoid
Valve
Bi-Flow
Liquid
Filter
Drier
Bi-
Flow
3/8 0.8 0.3 1.2 0.5 6
1/2 0.9 0.4 1.4 0.6 12
5/8 1.0 0.5 1.5 0.8
3/4 1.3 0.6 2.0 0.9
7/8 1.5 0.7 2.3 1.1
1-1/8 1.8 0.9 2.7 1.4
Table 5: Long Line Set Parts
Crankcase Heater Information
Models Part Numbers Description
018-036 48P001-01NN Crankcase Heater
048-072 48P002-01NN
Bi-Flow Solenoid Valve
Models Part Numbers Description
Models
018-072
ARS-4A 1/2” Valve Body
ARSCB 24V Coil
ARSBK Bi-Flow Kit
All three bi-ow parts must be ordered for valve to be
installed properly.
Bi-Flow Liquid Line Solenoid Valve
In order to minimize off-cycle refrigerant migration
to the compressor, a Bi-ow liquid line solenoid
valve is required for all long line set heat pump
applications. The Bi-ow solenoid valve controls
the ow of refrigerant only in the direction of the
arrow molded into the valve. The bi-ow liquid line
solenoid valve is shipped as a single ow valve. The
carton contains another valve stem which needs
to be installed in the valve to convert it to a bi-ow
valve.
The bi-ow valve should be connected to the 24V
side of the contactor. When installing the valve, the
arrow should be positioned toward the compressor
section to minimize the transfer of liquid directly into
the coax in the heating mode. The solenoid should
be installed right after the lter-drier or within two
feet of the compressor section.

19
IOM, BS/BT Models Enertech Global
Section 5: Line Set Installation
Line Sets
Vapor Line
A long line set application can critically increase
the charge amount needed for a system. Because
oil separates from the refrigerant in the evaporator,
the vapor line velocity must be adequate to carry
the oil along with the refrigerant. Horizontal vapor
lines require a minimum of 800 FPM velocity for
oil entrainment. Vapor risers require 1200 FPM
minimum, and preferably 1500 FPM regardless of
the length of the riser.
Liquid Line
The pressure entering the expansion device must
be sufcient to produce the required ow through
the expansion device. It is necessary for liquid
refrigerant (free of ash gas) to be delivered to the
expansion valve.
The pressure drop for vertical lift is 0.43 pound per
foot for R-410A. This is usually large and may be a
limiting factor in the ultimate design of the system.
Figure 1: Oil Trap Construction
45º Ell
90º Short
Radius
Street Ell
90º Long
Radius
Street Ell
45º Ell
Notes:
• A crankcase heater and Bi-ow liquid line
solenoid valve are required if total equivalent
length is greater than or equal to 50 feet or the
vertical separation is greater than or equal to 20
feet.
• (See table 5 for part numbers)
• An inverted vapor line trap must be installed with
the top of the trap above the air handler.
• Vapor line P-traps should be installed at the
outlet of the air handler and at the bottom of the
vapor line drop.
• 75 feet maximum equivalent length.
• 20 feet maximum vertical separation.
• Vapor line sizes on Two-Stage units should
NOT be increased due to the velocity
requirements for returning oil to the compressor.
Example 1:
A 6-ton unit is installed like gure 2, with 7/8” vapor
& 3/8” liquid tubing and has 50 linear feet of straight
tubing. The total number of elbows is four long
radius 90¼elbows. See Table 4.
Find the total equivalent length for the liquid line and
the vapor line.
Liquid Line Straight tubing + 4(90° long rad. elbow)
+ Filter Drier + Solenoid Valve.
50 + 4(0.8) + 6 + 12 = 71.2 feet for liquid line
Vapor Line Straight tubing + 4(90° long rad. elbow).
50 + 4(1.5) = 56 feet for vapor line
Figure 2: Air handler above compressor

20
Enertech Global IOM, BS/BT Models
Section 5: Line Set Installation
Figure 3: Compressor section above air
handler
Notes:
• A crankcase heater and Bi-ow liquid line
solenoid valve are required if total equivalent
length is greater than or equal to 50 feet or the
vertical separation is greater than or equal to 10
feet. (See table 5 for part numbers)
• Vapor line P-traps should be installed at the
outlet of the air handler and just before the
compressor section.
• 75 feet maximum equivalent line length.
• 10 feet maximum vertical separation.
• Vapor line sizes on Two-Stage units should NOT
be increased due to the velocity requirements
for returning oil to the compressor.
Figure 4: Horizontal piping above air handler
Notes:
• A crankcase heater and Bi-ow liquid line
solenoid valve are required if total equivalent
length is greater than or equal to 50 feet or the
vertical separation is greater than or equal to 20
feet.
(See table 5 for part numbers)
• The vapor line must be installed with the
horizontal run higher than the top of the
evaporator section.
• Vapor line P-traps should be installed at the
outlet of the air handler and at the bottom of the
vapor line drop.
• 75 feet maximum equivalent line length.
• 20 feet maximum vertical separation.
• Vapor line sizes on Two-Stage units should NOT
be increased due to the velocity requirements
for returning oil to the compressor.
Figure 5: Horizontal piping above A-Coil
Notes:
• A crankcase heater and Bi-ow liquid line
solenoid valve are required if total equivalent
length is greater than or equal to 50 feet or the
vertical separation is greater than or equal to 20
feet. (See table 5 for part numbers)
• The vapor line must be installed with the
horizontal run higher than the top of the
evaporator section.
• Vapor line P-traps should be installed at the
outlet of the evaporator and at the bottom of the
vapor line drop.
• 75 feet maximum equivalent line length.
• 20 feet maximum vertical separation.
• Vapor line sizes on Two-Stage units should NOT
be increased due to the velocity requirements
for returning oil to the compressor.
⚠ WARNING ⚠
IF USING A DUAL FUEL APPLICATION,
A-COIL MUST BE INSTALLED ON
THE OUTLET OF THE FURNACE.
INSTALLATION ON THE RETURN COULD
CAUSE FURNACE HEAT EXCHANGER
FAILURE, AND MAY VOID FURNACE
WARRANTY.