Enertech BT072 Installation & Operation 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 90¼ elbows. 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.

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