Enertech AV Series User manual

Installation & Operations Manual
AV MODELS OUTDOOR AIR-TO-WATER HEAT PUMPS
MD/ME MODELS INDOOR MODULE
20D826-01NN
20D826-01NN
A New Era with Advantage...
Enertech’s Advantage system was painstakingly engineered to funcon awlessly between space condioning and
domesc hot water. Our indoor module has truly set the bar with the rst turnkey total comfort soluon. With its
integrated electric or dual fuel opon, each backing up heang and DHW, you’ll never be le out in the cold!
• No More Buer Tanks, Free Up Floor Space
• Massive Labor & Accessories $avings
• Integrated Pumping & Controls
• Onboard Emergency Backup

Enertech Global, LLC 2AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Table of Contents
Secon 1: Model Nomenclature
Nomenclature Decoder ..................................................................................................................................................................4
Secon 2: Product & Unit Data
Unit Dimensional Data : AV ............................................................................................................................................................5
EAV Series Outdoor Unit Labels ......................................................................................................................................................6
EAV Outdoor Unit Side Panel Removal ...........................................................................................................................................6
EAV Unit Electrical Layout...............................................................................................................................................................7
EAV Unit Refrigerant Circuit Layout ................................................................................................................................................8
Unit Dimensional Data : MD/ME ....................................................................................................................................................9
EME/EMD Unit Labels ...................................................................................................................................................................10
EME/EMD Unit Interior Layout .....................................................................................................................................................11
Unit Electrical Data : AV ................................................................................................................................................................12
Unit Electrical Data : MD/ME ........................................................................................................................................................12
Secon 3: Introducon & Operaonal Consideraons
Introducon ..................................................................................................................................................................................13
Inspecon .....................................................................................................................................................................................13
Pre-Installaon Steps ....................................................................................................................................................................13
Consumer Instrucons ..................................................................................................................................................................14
Electrical .......................................................................................................................................................................................14
Variable Speed ..............................................................................................................................................................................14
Designing the System....................................................................................................................................................................15
Operang Condions ....................................................................................................................................................................16
Outdoor Unit .................................................................................................................................................................................17
Compressor Heater .......................................................................................................................................................................17
Enertech Recommendaons for All EAV Unit Applicaons ..........................................................................................................17
Secon 4: Outdoor Installaon Consideraons
Introducon ..................................................................................................................................................................................18
Placement .....................................................................................................................................................................................18
Service Area ..................................................................................................................................................................................18
Pipe Connecons ..........................................................................................................................................................................19
Snow Protecon ...........................................................................................................................................................................19
Secon 5: Unit Piping
Water Quality ...............................................................................................................................................................................21
Flow Rates and Piping Sizing .........................................................................................................................................................22
Load Piping ...................................................................................................................................................................................23
Bypass Valve .................................................................................................................................................................................23
Pump Mounng ............................................................................................................................................................................24
Piping Diagrams ............................................................................................................................................................................24
Piping Diagram - Flow Rates and Piping Sizing .............................................................................................................................25
An-Scald Valve Piping Connecons ............................................................................................................................................25
Piping Diagram - Indoor Module ..................................................................................................................................................26
Piping Diagram - Radiant Floor .....................................................................................................................................................27
Piping Diagram - Hydronic Air Handler .........................................................................................................................................28
Flush Cart Design ..........................................................................................................................................................................29
Flushing and Filling System ...........................................................................................................................................................29
Flushing Diagram - Outdoor Unit Heat Exchanger and Piping ......................................................................................................30
Flushing Diagram - Hot Water Tank ..............................................................................................................................................31
Flushing Diagram - Distribuon Zones ..........................................................................................................................................32
Flushing Diagram - Indoor Module ...............................................................................................................................................33
Secon 6: Anfreeze
Anfreeze Overview .....................................................................................................................................................................34
Anfreeze Charging ......................................................................................................................................................................34
Anfreeze Percentages by Volume Table .....................................................................................................................................35
Anfreeze Specic Gravity Table ..................................................................................................................................................35
Monobloc Requirements ..............................................................................................................................................................36
Secon 7: Field Wiring
Introducon ..................................................................................................................................................................................37
Communicaon ............................................................................................................................................................................37
Domesc Water Heang Controls ...............................................................................................................................................38
Space Condioning Controls .........................................................................................................................................................39
Diagram: Heang/Cooling - Radiant - One Fan Coil (fan coil is Enertech MPH series) .................................................................40
Diagram: Heang/Cooling - Mulple Fan Coils - No Radiant (All fan coils are Enertech MPH series) ..........................................41
Diagram: Heang/Cooling - Mulple Fan Coils - No Radiant (at least one fan coil has Y/W inputs)* ..........................................42

Enertech Global, LLC 3AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Secon 8: Controls
Sequence of Operaons ...............................................................................................................................................................43
Pump Start ....................................................................................................................................................................................43
Troubleshoong ............................................................................................................................................................................44
Outdoor Air Temperature (OAT) ...................................................................................................................................................45
Heang Curves ..............................................................................................................................................................................45
Control Box : AV ............................................................................................................................................................................46
Control Box : MD/ME ....................................................................................................................................................................46
Components .................................................................................................................................................................................47
Wiring Diagram : AV .....................................................................................................................................................................48
Wiring Diagram : MD ....................................................................................................................................................................49
Wiring Diagram : ME .....................................................................................................................................................................50
Wizard : Menu System ..................................................................................................................................................................51
Manual Mode ...............................................................................................................................................................................51
Alarms ...........................................................................................................................................................................................51
Data Logging .................................................................................................................................................................................51
Wizard : Pump Control..................................................................................................................................................................52
Wizard : Domesc Hot Water .......................................................................................................................................................52
Wizard : Indoor Climate ................................................................................................................................................................53
Wizard : Defrost Sengs ..............................................................................................................................................................54
Wizard : Advanced Menu .............................................................................................................................................................54
Secon 9: Equipment Start-Up
Preparaon ...................................................................................................................................................................................55
Startup Wizard ..............................................................................................................................................................................55
Equipment Startup Checklist ........................................................................................................................................................58
WPD Tables ...................................................................................................................................................................................59
Secon 10: Troubleshoong
Refrigerant Circuit - Cooling Mode ...............................................................................................................................................60
Refrigerant Circuit - Heang Mode ...............................................................................................................................................61
Refrigerant Circuit - Vapor Injecon Heang Mode .....................................................................................................................62
Refrigerant Circuit - Acve Defrost Mode ....................................................................................................................................63
Refrigerant Circuit - Passive Defrost Mode ...................................................................................................................................64
Thermistor and Pressure Transducer Connecons .......................................................................................................................65
Thermistor Legend ........................................................................................................................................................................66
Outdoor Unit LED Status ...............................................................................................................................................................67
Indoor Unit LED Status ..................................................................................................................................................................68
Indoor, Outdoor, and Inverter Alarms Tables ...............................................................................................................................69
Secon 11: Warranty Form and Revision Table
Warranty Registraon Form .........................................................................................................................................................73
Revision Table ...............................................................................................................................................................................75

Enertech Global, LLC 4AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Secon 1: Model Nomenclature
Nomenclature Decoder
Brand:
E = Enertech
Type:
A = Air-to-Water
Stage:
V = Variable Speed - R410A
Unit Capacity (Nominal MBTUH):
030, 060
Revision:
A = Current Revision
Voltage:
1 = 208/230V, 60Hz, 1Ph (Residen�al)
Future Use:
A = All Models
Source Heat Exchanger Op�ons:
T - Tube and Fin Air Coil
Load Heat Exchanger:
B = Brazed Plate (BPHE)
Future Use:
A = All Models
E A V 060 A 1 A A A B T S S
Op�ons:
S = Standard
Op�ons:
S = Standard
Future Use:
A = All Models
14: Op�ons
13: Source Heat Exchanger Op�ons
12: Load Heat Exchanger
11: Backup Heat
10: Future Use
9: Hot Water Configura�on
8: Voltage
7: Revision
4, 5, 6: Unit Capacity
3: Stage
2: Type
1: Brand
15: Op�ons
Model Nomenclature - EAV Outdoor Series
ENERTECH GLOBAL, LLC
2506 S. ELM STREET
GREENVILLE, IL 62246
[phone]
PROPRIETY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF ENERTECH GLOBAL, LLC.
ANY REPRODUCTION IN PART OR AS A WHOLE, WITHOUT WRITTEN CONSENT, IS PROHIBITED.
DRAWING NUMBER
20D297-01NN
DESCRIPTION
MODEL NOMENCLATURE,
ENERTECH EAV
OUTDOOR UNIT
DOC. DESIGNER
BRIAN S.
DESIGN DATE
3/16/2021
SHEET
1 of 1
REVISION TABLE
REV DESCRIPTION ECN DATE APPROVED
ASetup and Release - - Bryan L.
B
Remove GeoComfort, Hydron Module, and TETCO; Add Enertech. Remove 109 gallon tank op�on.
Digit 9 updated to include tank op�ons 1,2. Digit 10 updated to Future use. Digit 11 updated to
backup heat op�ons D and E
19-032-N158 4/24/2020 CJM
Brand:
E = Enertech
Type:
M = Indoor Module, Air-to-Water
Backup Heat:
D = Dual Fuel (No Internal Heat In Indoor Module
E = Internal Electric Heat In Indoor Module
Unit Capacity (Nominal MBTUH):
000 = All Sizes
Revision:
A = Current Revision
Voltage:
1 = 208/230V, 60Hz, 1Ph (Residenal)
Future Use:
A = All Models
Opons:
A = No Opon
E M D 000 A 1 A A A
Opons:
A = No Opon
11: Opons
10: Opons
9: Future Use
8: Voltage
7: Revision
4, 5, 6: Unit Capacity
3: Backup Heat
2: Type
1: Brand
Model Nomenclature - EM* Indoor Series
REVISION TABLE
REV DESCRIPTION ECN DATE APPROVED
ASetup and Release - 1/22/2019 Bryan L.
B
Remove GeoComfort, Hydron Module, and TETCO; Add Enertech. Remove 109 gallon tank opon.
Digit 9 updated to include tank opons 1,2. Digit 10 updated to Future use. Digit 11 updated to
backup heat opons D and E
19-032-N159 4/24/2020 CJM
BNomenclature updated to EM (combined with EC: 19-032-N159) 19-032-N159 4/24/2020 BWS
C
Separate digits 14 and 15. Digit 14 renamed “Opons”. S = “Standard”. Digit 15 renamed “Opons.
S = ”Standard”. 21-044-N01
3/26/2021 BWS
ENERTECH GLOBAL, LLC
2506 S. ELM STREET
GREENVILLE, IL 62246
[phone]
PROPRIETY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF ENERTECH GLOBAL, LLC.
ANY REPRODUCTION IN PART OR AS A WHOLE, WITHOUT WRITTEN CONSENT, IS PROHIBITED.
DRAWING NUMBER
20D298-01NN
DESCRIPTION
MODEL NOMENCLATURE,
ENERTECH EM*
INDOOR MODULE
DOC. DESIGNER
BRIAN S.
DESIGN DATE
3/26/2021
SHEET
1 of 1

Enertech Global, LLC 5AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Unit Dimensional Data : AV
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◊
ENERTECH GLOBAL, LLC
2506 S. ELM STREET
GREENVILLE, IL 62246
[phone]

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    
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AV030-060 DIMENSIONAL DATA


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◊
ENERTECH GLOBAL, LLC
2506 S. ELM STREET
GREENVILLE, IL 62246
[phone]

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    
   
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
AV030-060 DIMENSIONAL DATA



 

Shipping Weight
EAV030 - 410 lbs
EAV060 - 438 lbs
*All measurements are in inches.
Secon 2: Product & Unit Data

Enertech Global, LLC 6AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
LEK
OUT
IN
Art.nr.711453
Data
Serial nr.
Data Plate Serial Number
Load In from Indoor
Module Connecon
Thermistor Air Coil
(BT16)
Piping Connecons Label
Electrical Connecon
Condensate Drain Pan
Condensate Drain Pan
Connecon
Air Coil
Thermistor, Outdoor
Air
Load Out to Indoor
Module Connecon
EAV Series Outdoor Unit Labels
Secon 2: Product & Unit Data
LEK
Unscrew the screws and li off the cover
EAV Outdoor Unit Side Panel Removal

Enertech Global, LLC 7AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
EAV Unit Electrical Layout
LEK
AV Controls
Compressor Control
(TCB Board)
Thermistor, Suction-Evap
(Heating)
(BT84)
Thermistor, Load Out to
Indoor Module
(BT12)
Thermistor, Vapor Injection
Line
(BT81)
Vapor Injection Pressure
Transducer
(BP11)
Thermistor, Load In from
Indoor Module
(BT3)
Low Pressure Switch
(BP2)
High Pressure
Switch
(BP1)
Inverter
(QA40)
Harmonic Filter
Capacitor
Terminal Block
(X6) Thermistor,
Compressor
Discahrge
(BT14) Crankcase
Heater (qty 2)
Thermistor,
Sucon Gas
(BT17) Low Pressure
Switch
(BP8)
High Pressure
Transducer
(BP9)
Thermistor,
Liquid Line,
Heang
(BT15)
Secon 2: Product & Unit Data

Enertech Global, LLC 8AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
LEK
Compressor
(GQ10)
Refrigerant Circuit Labels
Solenoid Valve
EEV
Refrigeraon
Strainer
Connecon, Fluid
to Indoor Unit
Check Valve
Brazed Plate
Heat Exchanger
Reversing Valve
EEV, Subcooler
Connecon, Fluid from
Indoor Unit
Filter Drier
Fan
Compressor
Service Port,
Discharge Pressure
Service Port,
Sucon Pressure
EAV Unit Refrigerant Circuit Layout
Secon 2: Product & Unit Data

Enertech Global, LLC 9AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Secon 2: Product & Unit Data
Unit Dimensional Data : MD/ME
Shipping Weight
EMD - 212 lbs
EME - 221 lbs
*All measurements are in inches.

 

























◊
ENERTECH GLOBAL, LLC
2506 S. ELM STREET
GREENVILLE, IL 62246
[phone]

    
   















 






 

























◊
ENERTECH GLOBAL, LLC
2506 S. ELM STREET
GREENVILLE, IL 62246
[phone]

    
   














 







Enertech Global, LLC 10 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
EM Indoor Module Cabinet Details
Power Supply
(High Voltage)
Out to Hydronic
Zones
Out to Hot
Water Tank
In from
Outdoor
Unit
Out to
Outdoor
Unit
To Remove Panel
Remove (3) screws
EM Indoor Module Cabinet Details
Field Wiring
(Low Voltage)
Human Machine
Interface
In from Hydronic
Zones
In from Hot
Water Tank
Secon 2: Product & Unit Data
EME/EMD Unit Labels

Enertech Global, LLC 11 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Remove plate and place



Bypass
Valve

Pump

Immersion Heater
Water Solenoid
Valves
Flow Meter
Flush
Valves
Y-Strainer
Secon 2: Product & Unit Data
EME/EMD Unit Interior Layout

Enertech Global, LLC 12 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Unit Electrical Data : AV
Secon 2: Product & Unit Data

When any compressor bearing unit is connected to a weak power supply, starng current will generate a signicant “sag” in the
voltage which reduces the starng torque of the compressor motor and increases the start me. This will inuence the rest of
the electrical system in the building by lowering the voltage to the lights. This momentary low voltage causes “light dimming”.
The total electrical system should be evaluated with an electrician and HVAC technician. The evaluaon should include all
connecons, sizes of wires, and size of the distribuon panel between the unit and the ulity’s connecon. The transformer
connecon and sizing should be evaluated by the electric ulity provider.
20D237‐27NN:AVElectricalData
Volts Phase HP FLA
AV030 1 208/230 1 1/5 0.85 26.6 45
AV060 1 208/230 1 1/5 0.85 45.9 80
Max
Fuse
HACR
Drive Min
Circuit
Amps
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
5. CMCC (Compressor Maximum Output Current Limit): This value is the maximum output of the dirve (inverter) to the
compressor. Although not significant to the installation (continue to use MCA for wire/breaker sizing), this value is a required
listing for the unit electrical data.
Model Voltage
Code
60 Hz Power Compressor
36.0
Fan
LRA
20.6
50.0
50.0
CMCC5
20D237‐26NN:EMElectricalData
Volts Phase Volts kW FLA HP FLA
EMD000 1 208/230 1 1/4 1.5 3.4 15
EME000 1 208/230 1 230 9 39.1 1/4 1.5 52.7 60
Model Voltage
Code
60 Hz Power
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
ImmersionHeater Min
Circuit
AMPS
Max
Fuse
HACR
InternalPump
Unit Electrical Data : MD/ME

Enertech Global, LLC 13 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual

A New Era with Advantage
Enertech’s Advantage system was painstakingly engineered to
funcon awlessly between space condioning and domesc
hot water. Our indoor module has truly set the bar with the
rst turnkey total comfort soluon. With its integrated electric
or dual fuel opon, each backing up heang and DHW, you’ll
never be le out in the cold!
Safety Labeling and Signal Words
The signal words NOTICE, DANGER, WARNING, CAUTION, and
Note are used on product labels and throughout this manual
to idenfy levels of hazard seriousness.
“NOTICE” Nocaon of installaon, operaon or
maintenance informaon which is important, but which is
NOT hazard related.
“CAUTION” Indicates a potenally hazardous situaon or an
unsafe pracce which, if not avoided, COULD result in minor
or moderate injury, product or property damage.
“WARNING” Indicates a potenally hazardous situaon
which, if not avoided, COULD result in death or serious injury.
“DANGER” Indicates an immediate hazardous situaon
which, if not avoided, WILL result in death or serious injury.
“Note” Used to highlight suggesons which will result in
enhanced installaon, reliability, or operaon.

Upon receipt of any 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.
Ensure that the carrier makes proper notaon of all damages
or shortage on all bill of lading papers. Concealed damage
should be reported to the freight company within 5 days.
If not led within 5 days the freight company can deny all
claims.
Note: Nofy Enertech Global, LLC shipping department of all
damages within 5 days. It is the responsibility of the purchaser
to le all necessary claims with the freight company.

Enertech units are mounted to wooden pallets for easy
handling during shipment and installaon. Units are protected
during shipment with durable cardboard corner posts, top and
air coil panels. Shrink wrap is applied covering the enre unit
and aachment to the pallet.
Upon receipt of the unit, carefully remove the shrink wrap.
Using a box cuer, slit the shrink wrap on the cardboard top
and corner posts. Use cauon 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
installaon.
Remove the front service panel to locate technical documents;
manuals, bullens or instrucons and accessory items; HWG
piping kits, and strainers.
⚠CAUTION ⚠
DO NOT OPERATE THE HEAT PUMP UNIT DURING
BUILDING CONSTRUCTION PHASE

Protect units from damage and contaminaon due to
plastering (spraying), painng 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
protecve covering. Cap or recap unit connecons and all
piping unl unit is installed. Precauons must be taken to
avoid physical damage and contaminaon which may prevent
proper start-up and may result in costly equipment repair.
Storage
All units should be stored inside in the original packaging, in
an upright posion at all mes. Units should not be stacked
unless specially noted on the packaging.
Removal and Disposal
All units removed from service should have all components,
oils, anfreeze and refrigerants properly disposed of
according to local and naonal environmental recycling codes,
regulaons, standards and rules.

Before you fully install the equipment, it is recommended you
do the following:
1. Fully inspect the unit after unpacking
2. Compare the electrical data on the unit nameplate with
packing slip and ordering information to verify that the
correct unit has been shipped.
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 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. Locate the Unit Start-Up Form from this manual and
have it available as the unit installation proceeds.

Installaon locaon should include adequate service clearance
around the unit, and be oriented in a way that piping or other
permanently installed xtures do not have to be removed
for servicing. The Indoor Module should be located in a
condioned space where the ambient temperature remains
between 55oF and 95oF with a maximum RH of 78-80%.
Secon 3: Introducon & Operaonal Consideraons
⚠ CAUTION ⚠
THE EME/EMD SERIES EQUIPMENT IS DESIGNED FOR


INSTALL THE EME/EMD MODULE OR STORE 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.
⚠ NOTICE ⚠
WHEN REMOVING PANELS, GIVE SPECIAL ATTENTION
TO CABINET INSULATION. INTERLOCKING INSULATION
EXTENDS BEHIND THE FRONT PLASTIC FAN GRATE. IF
NEEDED, REMOVE LEFT CORNER PANEL AND FRONT
PLASTIC FAN GRATE TO REMOVE INSULATION.

Enertech Global, LLC 14 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Variable Speed
Overview
Enertech’s Variable speed Heat Pumps are designed to
match their capacity to the load of the zone. With a true
variable speed compressor and variable water ow, you now
maximize the benet from inverter driven technology. With
the installaon of a pressure dierenal bypass valve, even
a small radiant oor heang zone (three or four 1/2” PEX
circuits, 3 gpm of load ow) can allow a variable speed heat
pump to operate without the use of a buer tank. To maintain
the minimum ow rate required for the heat pump (minimum
5 gpm), part of the ow is returned to the heat pump
through the bypass valve, and the remainder is delivered to
the hydronic zone (minimum 3 gpm). This approach works
well for radiant oor zones. Very small loads will cause the
heat pump to cycle, but the minimum load ow rate for the
refrigerant circuit is always maintained. Systems that require
cooling must ulize fan coils that are large enough to allow
sucient run me to provide adequate latent capacity. Fan
coils smaller than one ton could cause the heat pump to cycle
too oen, not allowing the system to maintain a cold enough
coil to provide good dehumidicaon. Therefore, Enertech
recommends that fan coils, one ton (12,000 BTU’s) and larger
are used with variable speed heat pumps. Zones that are
smaller than 3 gpm are referred to as Micro-zones. Micro-
zones do not work with Variable speed heat pumps, the ow
rates are too low and cause the heat pump to short cycle.
Enertech’s Advantage System has almost limitless exibility,
we will be happy to provide a custom soluon for your
project! If your project falls outside of the provided guidelines
for water ow or BTU’s, please call our Design Services.

Buer tanks are not recommended with Variable speed
heat pumps. The purpose of a buer tank is primarily to
keep the heat pump running long enough to prevent short
cycling when the hydronic load is much smaller than the heat
pump capacity. Another important use of the buer tank is
to decouple the ow rate required for the heat pump from
the ow rate of the hydronic system, which is typically much
less than the heat pump requires. Heat pumps with single
speed and two-stage compressors almost always need more
ow rate than the design ow rate of the hydronic system
they serve, especially if only one zone is calling for heang or
cooling.
Secon 3: Introducon & Operaonal Consideraons

Dealer should instruct the consumer in proper operaon,
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 heat pumps and system installaons may
include electrical, refrigerant and/or water connecons.
Federal, state and local codes and regulaons apply to various
aspects of the installaon. 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 installaon, 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 oers 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 installaons
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.
⚠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.
Electrical
Carry out the electrical installaon with care. Do not connect
the ground lead to gas lines, water lines, lightning conductors,
or telephone line ground leads. Incorrect grounding can cause
unit faults such as electrical shock due to short-circuing. Use
disconnect switches with sucient breaker capacity. Wiring
must be routed to prevent damage by metal edges or trapped
by panels.
Do not install the indoor or outdoor unit near locaons
where leakage of combusble gases can occur. Do not install
the unit where corrosive gas or combusble gas or liquids
can accumulate or be handled. The Indoor Module is not
waterproof and must be installed indoors.
Do not install and use the system close to equipment
that generates electromagnec elds or high frequency
harmonics. Equipment such as inverters, standby generators,
medical high frequency equipment and telecommunicaons
equipment can aect the unit and cause malfuncons and
breakdowns. The unit can also aect medical equipment
and telecommunicaons equipment, so that it funcons
incorrectly or not at all.
Insulate the unit’s connecon pipes so that the ambient air
moisture does not condense on them. Insucient insulaon
can cause condensaon, which can lead to moisture damage
on the roof, oor, furniture, and valuable personal property.

Enertech Global, LLC 15 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Secon 3: Introducon & Operaonal Consideraons
Designing the System
Enertech strongly recommends using an approved zone
control (HBX or EWC) to provide the most compable
operaon with the Indoor Module. Although other control
systems will work, Enertech Technical Services personnel are
most familiar with the approved controls. Other controls may
be dicult to support should troubleshoong be needed.

According to the Water Research Foundaon, the average
American shower uses approximately 15.8 gallons and lasts
for 7.8 minutes at an average ow rate of 2.1 gpm. Depending
upon local regulaons, shower heads may be available with
1.8, 2.0, or 2.5 gpm ow rates. The state of California, for
example limits the ow rate to 1.8 gpm, as of July 2018. In
some cases ow restrictors can be removed/modied or
mulple shower heads may allow signicantly more water
usage.
Following are some consideraons when determining indirect
water heater choice, as well as the need for a second water
heater:
EAV Capacity: The EAV unit has much higher capacity than
a standard electric or gas water heater, although the indirect
water heater storage is for “load water”, not potable water.
Therefore, the Turbomax indirect water heater operates more
like an instantaneous water heater than a standard water
heater. Based upon Enertech lab tesng, draws of 5 gpm for a
sustained period from the water heater will cause the supply
temperature at the xture to drop.
Large Usage: In a typical residenal applicaon, a second
water heater is not necessary for capacity reasons. In large
usage applicaons (spa tubs and mul-head showers), a
second water heater is necessary to meet the hot water needs
of the customer. A gas or electric water heater can be added
to the system to cover these needs. A review of the required
gpm and gallons of hot water will be required to size the tank.
Keep in mind that mulple shower heads could legally use as
much as 10 gpm.
Redundancy: A second water heater will provide some
redundancy to the system if there is a pump failure in the heat
pump or some other issue not allowing the heat pump to run.

hot water.
Note: Based upon the consideraons above, Enertech
recommends a second water heater for all
EAV installaons. It is a relavely inexpensive addion that
provides many advantages.

Tank selecon is based upon the number of bathrooms
(types of showers and tubs), dishwashers, washing machines,
and number of people in the home. Enertech oers two
selecons, a 45 gallon indirect tank and a 65 gallon indirect
tank. Typically, a 45 gallon tank will handle two bathrooms
with water ecient xtures, one dishwasher, and one
automac clothes washer. A 65 gallon tank will handle 3-1/2
bathrooms with water ecient xtures, one dishwasher, and
one automac clothes washer. If the home has been idened
as a large usage applicaon (see “Large Usage”, above), a
second water heater in series with the Turbomax indirect
water heater is required. Even applicaons that are not “Large
Usage” will benet from a backup water heater for mes
when the outdoor temperature is very cold, during defrost
cycle, or for emergency use.

The EME model Indoor Module has an internal 9kW
immersion heater that can be used for supplemenng the
heat pump capacity for hydronic heang and/or DHW heang.
Depending upon the applicaon, either the internal heater or
external backup may make more sense. If addional heang
capacity is needed, a determinaon should be made based
upon type of heang required. For example, in most cases, a
backup electric heater is installed in the fan coil. Since the fan
coil is required for cooling anyway, it can be used for backup
or for emergency heat. For DHW, a second water heater
can provide both backup heang capacity and emergency
DHW heang. The advantage of the internal electric heat is
that duct heaters and second water heaters are not needed.
However, if a pump fails, the internal electric heat cannot
operate. Each applicaon must be evaluated individually
to ensure that the type of backup ts the requirements.
Installaon diagrams in this IOM show the typical connecons
used for addional heang back up sources or dual fuel
applicaons. Enertech recommends a second water heater
and electric heat in the fan coil, ulizing the internal electric
heat as oponal.

The EMD model Indoor Module has connecons for an
external boiler that can be used for supplemenng the heat
pump capacity for hydronic heang and/or DHW heang. For
DHW, a second water heater or a combi boiler can provide
both backup heang capacity and emergency DHW heang.
Enertech recommends a second water heater (or combi
boiler) and electric heat in the fan coil.

Enertech Global, LLC 16 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Secon 3: Introducon & Operaonal Consideraons



60
70
80
90
100
110
120
130
140
150
160
170
180
‐20 0 20 40 60 80 100 120
LoadWaterTemperature(oF)
OutdoorTemperature(oF)
OperatingRange(HeatingMode)
SupplyTemperature
SupplyTemperatureSafetyBuffer
ReturnTemperature
30
40
50
60
70
80
90
40 50 60 70 80 90 100 110 120
LoadWaterTemperature(oF)
OutdoorTemperature(oF)
OperatingRange(CoolingMode)
SupplyTemperature
ReturnTemperature


Enertech Global, LLC 17 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Secon 3: Introducon & Operaonal Consideraons
Outdoor Unit
Use original accessories and the stated components for the
installaon. Install the unit in a locaon with good support.
Unsuitable installaon locaons can cause the unit to fall
and cause material damage and personal injury. Installaon
without sucient support can also cause vibraons and
noise. Ensure that the unit can withstand strong winds and/or
earthquakes.
The electrical installaon must be carried out by a qualied
electrician and the system must be connected as a separate
circuit.
Power supply with insucient capacity and incorrect funcon
can cause electrical shocks and re. Use the wire size sucient
for the MCA (Minimum Circuit Ampacity) per the electrical
data tables for the electrical connecon, ghten the cables
securely in the terminal blocks and support the wiring
correctly to prevent overloading the terminal blocks. Loose
connecons or cable mounngs can cause abnormal heat
producon or re.

In heang, the minimum outdoor air temperature at which
the unit will operate is -13 deg. F. In cooling, the minimum
temperature is 38-41 deg. F.
Balance Point Temperature
The balance temperature is the outdoor temperature when
the heat pump’s stated output is equal to the building’s input
requirement. This means that the heat pump covers the whole
building’s output requirement down to this temperature.
Compressor Heater
The unit is equipped with two heaters that heat the
compressor before start-up and when the compressor is
cold. When starng the unit in low ambient condions, the
compressor heater may need to be acve for up to 3 hours
before starng unit.

The condensate drain pan collects and drains away most of
the condensate from the heat pump.
It is important to the heat pump funcon that the condensate
run-o is not posioned so that it can cause damage to
the house. The condensate that collects in the trough can
be substanal and should be routed away by pipe to an
appropriate area, it is recommended that the shortest
outdoor stretch possible is used. Run-o should be checked
regularly, especially during autumn, for obstrucons by leaves
and branches. Clean if necessary.
Back
View
Condensate Drain


Zone Piping: All zone piping should be “Home Run” style
(Page #25) to assist with purging air and to maintain lower
pressure drop.
Hydronic Components: System should include a boiler trim
kit that includes an expansion tank, air separator/automac
air vent, and glycol feeder. In addion, an automac air vent
should be located at the highest point in the piping system.
Note that a factory-installed expansion tank is included with
the Indoor Module.
 All systems must include anfreeze in the
hydronic piping and Fernox F1 inhibitor or approved alternate
(this is a warranty requirement). Heang only systems do not
require anfreeze in the hydronic piping (except those that
have exposed piping) but must include Fernox F1 inhibitor or
approved alternate (this is a warranty requirement).
Flush Valves: System should include ush valves to facilitate
purging of air.
System Pump: System should include a variable speed
(Delta-T or Delta-P control) or constant speed pump to
provide ow from the Indoor Module to the hydronic zones.
A pressure dierenal bypass valve must be installed to avoid
dead heading the pump if zone valves are not fully open.
Strainer: System should include a strainer. It must be checked
and cleaned as necessary to ensure proper ow rate and long-
term unit reliability.
 All necessary unions,
adapters and ngs should be installed to allow ease of
service and to meet any local code requirements.
⚠CAUTION ⚠
IF THE CONDENSATE DRAIN WILL BE CONNECTED
TO PIPING, DO NOT USE A TRAP. IF PIPED, HEAT
TAPE MUST BE INSTALLED TO AVOID FREEZING
AND BURSTING OF THE PIPING. PIPING FROM
THE CONDENSATE DRAIN IS NOT REQUIRED BUT

OFF WILL CAUSE DAMAGE TO THE FOUNDATION,
LANDSCAPING, OR OTHER STRUCTURES THAT MAY


Enertech Global, LLC 18 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Secon 4: Outdoor Installaon Consideraons

The outdoor unit must be installed on a solid level base that
can support it’s weight. In many cases, a snow stand will be
required to keep the lower edge of the evaporator above the
level of the average local snow depth. It is recommended that
the unit or snow stand would rest on a concrete foundaon
slab. If concrete blocks are used they must rest on suitable
base as not to sink or sele over me.
Note: Do not place the unit directly on the lawn or other
non-solid surface.
The unit should not be posioned next to noise sensive walls,
for example, next to a bedroom.
Care must be exercised during unit installaon so that
recirculaon of the outdoor air does not occur. This causes
lower output and impaired eciency.
The back of the unit must be sheltered from direct wind,
which negavely aects the defrost funcon. The air coil
side of the unit should face the wall of the home. Some
condensaon may drip from the drainage hole located at the
base of the unit. Make sure that water can properly drain way
from the unit, and home.
Service Area
The distance between the unit and the house wall must be at
least 14 inches. Clearance above the unit should be at least
40 inches. However, free space in front must be 40 inches for
future servicing. Noce the locaon of the controls and the
compressor towards the right side of the unit.
*All measurements are in inches.
Placement
Moving from the street to a unit’s nal locaon. This unit
weights roughly 400 lbs so li accordingly using plenty of help
as needed.
Note: The center of gravity is oset to one side (the right side
when looking at the front of the unit).
If the ground allows, use a pallet truck to move the unit to the
set up locaon. If that is not available and you must li the
unit into place please do so as described below.
If the unit needs to be transported across so ground, such as
a lawn, a crane be used that can li the unit to the installaon
locaon. When the unit is lied with a crane, the packaging
must be undisturbed.
If a crane is not accessible the unit may be transported on
an extended hand truck with oversized turf res (dolly, two
wheeler). The unit must be taken from its heaviest side.
Do not install the outdoor unit in the following

• Locaons Where potenal leakage of combusble gas’
can occur.
• Locaons where carbon ber, metal powder or other
powder like substances could enter the air.
• Locaons where chemical substances could aect the
unit (for example, sulde gas, chlorine, acid, or alkaline
substances can occur).
• Locaons near vented appliances including, driers,
HRV’s, ERV’s, furnaces, boilers, replaces, any fossil fuel
appliances or moisture producing equipment.
• Locaons with direct exposure to oil mist or steam.
• Locaons near vehicle exhaust.
• Locaons where machines that generate high frequency
harmonics are used.
• Locaons where cosmec or special sprays are oen used
• Locaons that can be subjected to direct salty
atmospheres.
• Locaons where large amounts of snow may accumulate.
• Locaons where the system is exposed to chimney smoke.
• Locaons where animals or pets may be fenced in.
Front View

Enertech Global, LLC 19 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
Secon 4: Outdoor Installaon Consideraons

• Pipe installaon must be carried out in accordance with
current local and federal regulaons.
• The unit is not equipped with external shut o valves on
the load side; these must be installed to facilitate any
future servicing.
• The unit should be vented through the venng valve. This
is located on the load outlet leaving the unit and would be
used to bleed o excess air within the water lines. See the
illustraon.
• Be sure to use both of the supplied corrugated stainless
steel ex tubing, aaching them directly to the inlet and
outlet on the outdoor unit. These exible tubes act as
vibraon dampers. Be sure to t them so that an elbow is
created on both lines.
• When assembling the ex tubes to the unit be certain to
use a two wrench system of ghtening. One wrench used
to back up the staonary copper ng ,the other to turn
the corresponding end of the ex tube. Tighten by moving
the wrench on the ex tube.
• All of the outdoor tubing must be fully insulated. 1-5/8”
insulaon is included with the corrugated stainless steel
tubing kit .
1-5/8” Insulaon included with
Flex Tubing kit. 12 feet total.
24 Inches
1-1/4”
FIP Thread
1-1/4”
FIP Thread
LEK
Data
Serie.nr.
Art.nr.711453
OUT
IN
Backup Wrench
Required

If there is a risk of snow or ice falling from a roof, a protecve
roof or cover must be erected to protect the heat pump, pipes
and wiring.
Snow Stand (Available in 12” & 18” Models)

Enertech Global, LLC 20 AV : MD/ME - Rev. A Models
Installaon and Operaons Manual
PEX OR COPPER
TUBING
INDOOR
MODULE
OUTDOOR
UNIT
STAINLESS STEEL
FLEX TUBING KIT
NOT SHOWN:
PIPING INSULATION
NOT SHOWN:
OPTIONAL SUPPORT
STAND FOR AREAS WITH
SNOW ACCUMULATION
SUGGESTED
12” OFF FLOOR
MANUAL
AIR VENT
OUTSIDE
WALL
Pipe Sleeve
Foundation or Wall
Piping To/From
Outdoor Unit
End of Pipe Sleeve Must Be
a Minimum of 1” Beyond Wall
Fernco Fitting
⚠NOTICE ⚠
SLEEVE MUST BE PROPERLY SEALED AT THE
WALL PENETRATION TO PREVENT LEAKS. THE
FERNCO FITTING MAY BE USED ON ONE OR
BOTH SIDES OF THE WALL. THIS IS JUST ONE
EXAMPLE OF ENSURING THAT THE EXPANSION/
CONTRACTION OF THE PIPING DOES NOT
ADVERSELY AFFECT THE WALL INTEGRITY.

HYDROSTATIC SEALS ARE ACCEPTABLE, AS WELL.
Piping Between Outdoor Unit and Indoor Module
Secon 4: Outdoor Installaon Consideraons