Enertech VS Series User manual

Installation & Operations Manual
VS/VT MODELS PACKAGED WATER-TO-AIR HEAT PUMPS
20D218-02NN
20D218-02NN
REVISION: A

2
Enertech Global IOM, VS/VT Models, Rev A
Table of Contents
Section 1: Model Nomenclature and AHRI Data
VS/VT Model Nomenclature......................................................................................................................................... 4
AHRI Performance Data, VS, W/PSC Blower............................................................................................................... 5
AHRI Performance Data, VS, W/ECM Blower ............................................................................................................. 5
AHRI Performance Data, VT, W/ECM Blower.............................................................................................................. 6
Section 2: Installation Introduction
Introduction, Unit Protection and Pre-Installation ..................................................................................................7-8
Section 3: Installation Considerations
Consumer Instructions ................................................................................................................................................... 9
Duct Work and Typical Supply and Return Ductwork Connections ...................................................................... 10
Section 4: Unit Data Information
Dimensional Data and Installation Clearances ..................................................................................................11-12
Unit Physical Data ........................................................................................................................................................ 13
VS - ECM Electrical Data - 015-042............................................................................................................................. 14
VS - ECM Electrical Data - 048-072............................................................................................................................. 15
VS - PSC Electrical Data - 006-030 .............................................................................................................................. 16
VS - PSC Electrical Data - 036-072 .............................................................................................................................. 17
VT - ECM Electrical Data - 024-072............................................................................................................................. 18
PSC Fan Performance, Single Stage Compressor Units........................................................................................... 19
ECM Fan Performance, Single & Two-Stage Compressor Units.............................................................................. 19
Water Flow Calculations and Selection .................................................................................................................... 20
Section 5: Unit Piping Installation
Water Quality................................................................................................................................................................ 21
Interior Piping ................................................................................................................................................................ 22
Condensation Drain Connection .............................................................................................................................. 22
ACDT2A - EZ-Trap 1” Kit (customer must provide a 1” S x 3/4” Mips adapter) ................................................... 22
Typical Pressurized Flow Center Installation .............................................................................................................. 22
Typical Non-Pressurized Flow Center Installation...................................................................................................... 22
Pressurized Flow Center and Pump Mounting.......................................................................................................... 23
Typical Unit Piping Connections ............................................................................................................................... 24
External Flush Valves .................................................................................................................................................... 24
Open Loop Piping and Connections ........................................................................................................................ 25
Flushing & Charging a Pressurized Flow Center........................................................................................................ 26
Water Quality................................................................................................................................................................ 26
Removing Debris During Flushing ............................................................................................................................... 26
Flush Cart Design.......................................................................................................................................................... 26
Antifreeze Overview .................................................................................................................................................... 29
Antifreeze Characteristics........................................................................................................................................... 29
Antifreeze Specic Gravity.......................................................................................................................................... 30
Antifreeze Charging .................................................................................................................................................... 31
Pipe Fluid Volume......................................................................................................................................................... 31
Antifreeze Percentages by Volume ........................................................................................................................... 31
APSMA Pump Sharing Module ................................................................................................................................... 32
Section 6: Desuperheater Installation
Desuperheater Installation and Plumbing Installation........................................................................................33-34
Desuperheater Installation with Single Water Heater .............................................................................................. 35
Desuperheater Installation with Preheat Tank.......................................................................................................... 35
Section 7: Auxiliary Heater
Auxiliary Heater Nomenclature Decoder and Overview........................................................................................ 36
Section 8: Electrical Connections
Single Phase Connections, Typical Thermostat Connections and Three Phase Connections ........................... 37

3
IOM, VS/VT Models, Rev A Enertech Global
Section 9: Controls
Microprocessor Features and Operation.................................................................................................................. 38
Loop Pump Circuit Breakers and Safety Controls .................................................................................................... 39
Temperature Sensor Operating Range ..................................................................................................................... 40
LED Identication ......................................................................................................................................................... 41
Hot Water Generator (HWG) Pump Control............................................................................................................. 42
Sequence of Operation .............................................................................................................................................. 42
Section 10: Wiring Diagrams
Single Stage, PSC Fan, Single Phase, 208/230V, 60HZ, DSH, Residential/Commercial......................................... 44
Two Stage or Single Stage, ECM Fan, single Phase, 208/230V, 60Hz, DSH .......................................................... 45
Single Stage, PSC Fan, Single Phase, 208/230V, 60Hz, Residential/Commercial .................................................. 46
Single Stage, PSC Fan, Single Phase, 208/230V or 115V, 60Hz, Commercial ........................................................ 47
Two Stage or Single Stage, ECM Fan, Single Phase, 208/230V, 60Hz ..................................................................... 48
Two Stage or Single Stage, ECM Fan, Single Phase, 208/230V, 60Hz, Commercial.............................................. 49
Single Stage, PSC Fan, Three Phase, 208/230V, 60Hz, Commercial ....................................................................... 50
Single Stage, PSC Fan, Three Phase, 208/230V, 60Hz, DSH, Commercial .............................................................. 51
Single Stage, PSC Fan, Three Phase, 460V, 60Hz, Commercial............................................................................... 52
Single Stage, Three Phase , 460V or 575V, 60Hz, DSH, Commercial ....................................................................... 53
Two Stage or Single Stage, ECM Fan, Three Phase, 208/230V, 60Hz, Commercial .............................................. 54
Two Stage or Single Stage, ECM Fan, Three Phase, 208/230V, 60Hz, DSH, Commercial ..................................... 55
Two Stage or Single Stage, ECM Fan, Three Phase, 460V, 60Hz, Commercial...................................................... 56
Single Stage, PSC Fan, Single Phase, 265V, 60Hz, Commercial .............................................................................. 57
Single Stage, PSC Fan, Single Phase, 265V, 60Hz, DSH, Commercial ..................................................................... 58
Two Stage or Single Stage, ECM Fan, Single Phase, 265V, 60Hz, Commercial ..................................................... 59
Two Stage or Single Stage, ECM Fan, Single Phase, 265V, 60Hz, DSH, Commercial ............................................ 60
Two Stage or Single Stage, ECM Fan, Three Phase, 460V, 60Hz, DSH, Commercial............................................. 61
Section 11: Equipment Start-Up Procedures
Equipment Start-Up Process........................................................................................................................................ 62
Equipment Start-Up Form ............................................................................................................................................ 63
VS Series, Heat of Extraction/Heat of Rejection Tables ........................................................................................... 64
HE/HR Table, Standard PSC Blower ........................................................................................................................... 64
HE/HR Table, Optional ECM Blower .......................................................................................................................... 64
VT Series, Heat of Extraction/Heat of Rejection Tables............................................................................................ 65
HE/HR Table, Standard ECM Blower .......................................................................................................................... 65
VS Series, Pressure Drop Tables .................................................................................................................................. 66
VT Series, Pressure Drop Tables .................................................................................................................................. 67
Section 12: Troubleshooting
Performance Check.................................................................................................................................................... 68
QR Codes for Installation or Troubleshooting Tip Videos......................................................................................... 68
Model VS Operating Parameter Tables..................................................................................................................... 69
Model VT Operating Parameter Tables..................................................................................................................... 70
Compressor Troubleshooting ..................................................................................................................................... 71
Refrigeration Troubleshooting..................................................................................................................................... 72
Superheat/Subcooling Conditions ............................................................................................................................ 72
Troubleshooting Worksheet......................................................................................................................................... 73
Troubleshooting Tips..................................................................................................................................................... 74
Unit Electrical Data ...................................................................................................................................................... 76
Section 13: Warranty
Warranty Order & Claim Form.................................................................................................................................... 77
Warranty Registration Form......................................................................................................................................... 78

4
Enertech Global IOM, VS/VT Models, Rev A
Section 1: Model Nomenclature and AHRI Data


ENERTECH GLOBAL, LLC
2506 S. ELM STREET
GREENVILLE, IL 62246
[phone]








 





-V S 036
Stage:
S = Single Stage - R-410a
Type:
V = Vertical Package
Brand:
G = GeoComfort
H = Hydron Module
T = TETCO
A = GeoExcel
Unit Capacity (Nominal MBTUH):
006, 009, 012, 015, 018, 024,
030, 036, 042, 048, 060, 072
Revision:
A = Current Revision
Voltage:
1 = 208/230V, 60Hz, 1Ph (Residential)
0 = 208/230V, 60Hz, 1Ph (Commercial)
2 = 208/230V, 60Hz, 3Ph (Commercial) - (024 - 072 Units Only)
3 = 460V, 60Hz, 3Ph (Commercial) - (024 - 072 Units Only)
4 = 575V, 60Hz, 3Ph (Commercial) - (024 - 072 Units Only)
A = 265V, 60Hz, 1Ph (Commercial) - (006 - 036 Units Only)
9 = 115V, 60Hz, 1Ph (Commercial) - (006 - 009 Units Only)
Hot Water Configuration:
0 = None
1 = Desuperheater w/Factory Installed Pump
(018 - 072, 208/230V Units Only)
5 = Desuperheater w/o Factory Installed Pump
(265V, 460V, 575V Units Only)
Standard:
SS = Stock Standard
RS = Factory Installed Soft Starter
(1Ph, 208/230V,
024-072 Units ONLY)
NS = Commercial Duct Flanges
Source HX Options:
C = Copper Coax (Standard)
N = CuproNickel Coax
Blower Options:
0 = PSC Motor
1 = ECM Motor (Constant CFM)
(Not Available in 115V or 575V)
(015 - 072 Units Only)
Discharge Air Options:
T = Top Discharge Air
Return Air Options:
L = Left Return Air
R = Right Return Air
A 0 1 L T 0 C SS
1:Brand
2:Type
3:Stage
4, 5, 6: Unit Capacity
7: Revision
8:Voltage
9: HotWater Configuration
10: Return Air Options
11: DischargeAir Options
12: Blower Options
13: SourceHXOptions
14& 15: Standard
*NOTE:
1. EXPORT SHEET1: TO PDF MAKE SURE TO LEAVE LINE WEIGHTS
ON IN PDF OPTIONS WHEN EXPORTING FILE.
SAVE FILE IN
B:\ENGINEERING\RECORDS\Component Drawings\PDF
WITH THE CURRENT REV. AT THE END OF THE FILE NAME.
MOVE OLD REV. FILE TO THE OBSOLETE FOLDER.
2. EXPORT SHEER2: TO PDF MAKE SURE TO LEAVE LINE WEIGHTS
ON IN PDF OPTIONS WHEN EXPORTING FILE.
SAVE FILE IN
P:\Engineering\Drawings-PDF\NOMENCLATURE
MAKE SURE .PDF FILE NAME MATCHES THE OLD REV.
THAT YOU ARE REPLACING.

3. DON'T FORGET: TO FILL OUT THE DESCRIPTION
IN THE .IPT FILE iPROPERTIES

    
  
  
  
  
  
  
  
   


ENERTECH GLOBAL, LLC
2506 S. ELM STREET
GREENVILLE, IL 62246
[phone]








 





-V T 036
Stage:
T = Two Stage - R-410a
Type:
V = Vertical Package
Brand:
G = GeoComfort
H = Hydron Module
T = TETCO
A = GeoExcel
Unit Capacity (Nominal MBTUH):
024, 036, 048, 060, 072
Revision:
A = Current Revision
Voltage:
1 = 208/230V, 60Hz, 1Ph (Residential)
0 = 208/230V, 60Hz, 1Ph (Commercial)
2 = 208/230V, 60Hz, 3Ph (Commercial)
3 = 460V, 60Hz, 3Ph (Commercial)
A = 265V, 60Hz, 1Ph (Commercial) - (024 - 060 Units Only)
Hot Water Configuration:
0 = None
1 = Desuperheater w/Factory Installed Pump
5 = Desuperheater w/o Factory Installed Pump
(265V & 460V Units Only)
Standard:
SS = Stock Standard
RS = Factory Installed Soft Starter
(1Ph, 208/230V, Units ONLY)
NS = Commercial Duct Flanges
Source HX Options:
C = Copper Coax (Standard)
N = CuproNickel Coax
Blower Options:
1 = ECM Motor (Constant CFM)
Discharge Air Options:
T = Top Discharge Air
Return Air Options:
L = Left Return Air
R = Right Return Air
A 0 1 L T 1 C SS
1:Brand
2:Type
3:Stage
4, 5, 6: Unit Capacity
7: Revision
8:Voltage
9: HotWater Configuration
10: Return Air Options
11: DischargeAir Options
12: Blower Options
13: SourceHXOptions
14& 15: Standard
*NOTE:
1. EXPORT SHEET1: TO PDF MAKE SURE TO LEAVE LINE WEIGHTS
ON IN PDF OPTIONS WHEN EXPORTING FILE.
SAVE FILE IN
B:\ENGINEERING\RECORDS\Component Drawings\PDF
WITH THE CURRENT REV. AT THE END OF THE FILE NAME.
MOVE OLD REV. FILE TO THE OBSOLETE FOLDER.
2. EXPORT SHEER2: TO PDF MAKE SURE TO LEAVE LINE WEIGHTS
ON IN PDF OPTIONS WHEN EXPORTING FILE.
SAVE FILE IN
P:\Engineering\Drawings-PDF\NOMENCLATURE
MAKE SURE .PDF FILE NAME MATCHES THE OLD REV.
THAT YOU ARE REPLACING.

3. DON'T FORGET: TO FILL OUT THE DESCRIPTION
IN THE .IPT FILE iPROPERTIES

    
  
  
  
  
  
   
VS Model Nomenclature
VT Model Nomenclature

5
IOM, VS/VT Models, Rev A Enertech Global
AHRI Performance Data, VS, W/PSC Blower
Section 1: Model Nomenclature and AHRI Data
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
UNIT
RATING
TYPE
F/L
COOL F/L EER F/L HEAT F/L COP
WL 6,800 16.0 8,400 5.5
GW 7,800 25.8 7,000 4.6
GL 7,200 18.6 5,600 3.7
WL 6,800 15.0 8,300 5.2
GW 7,900 24.0 7,100 4.5
GL 7,200 17.7 5,500 3.5
WL
10,200 15.013,000
5.2
GW
11,900 22.110,600
4.4
GL 10,900
17.48,500
3.6
WL 11,400 15.5 14,600 5.0
GW 13,400 24.1 12,100 4.3
GL 11,900 18.1 9,400 3.6
WL 15,100 17.5 17,900 6.0
GW 17,500 28.8 14,600 5.1
GL 16,000 19.8 11,600 4.1
WL
20,500 16.924,200 5.8
GW 23,200
27.5 20,100 5.0
GL
21,400 20.016,300 3.9
WL 24,800 16.8 30,000 5.6
GW 28,100 26.0 24,200 4.9
GL 26,000 19.7 19,400 4.0
WL 28,600 15.9 34,900 5.4
GW 31,000 23.4 28,700 4.7
GL 30,100 18.5 22,300 3.9
WL 36,000 15.5 46,500 5.2
GW 40,500 23.5 37,600 4.6
GL 37,800 18.0 30,200 3.9
WL 41,800 16.0 48,500 5.6
GW 46,700 24.4 39,200 4.7
GL 43,600 18.6 32,000 3.8
WL 48,500 15.2 58,900 5.0
GW 53,400 22.6 48,100 4.4
GL 50,500 17.6 39,600 3.6
WL 57,700 14.8 71,400 4.9
GW 63,300 21.3 58,700 4.3
GL 60,000 16.9 46,900 3.6
WL 67,100 13.2 81,000 4.4
GW 74,600 19.1 66,500 4.0
GL 70,100 15.1 53,200 3.3
VS024
PSC
VS030
PSC
VS060
PSC
VS006
PSC 115V,
265V Only
VS072
PSC
VS006
PSC
VS042
PSC
VS048
PSC
VS036
PSC
VS009
PSC
VS012
PSC
VS015
PSC
VS018
PSC
UNIT
RATING
TYPE
F/L
COOL F/L EER F/L HEAT F/L COP
WL 15,200
18.8
17,700
6.4
GW 17,400
31.6
14,400
5.4
GL 16,000
22.3
11,500
4.3
WL 20,700 18.8 23,700 6.2
GW 23,200 30.5 19,600 5.3
GL 21,700 22.2 15,700 4.1
WL 25,900 18.4 29,800 5.9
GW 29,400 29.5 24,000 5.1
GL 27,000 21.6 19,300 4.2
WL 30,100 17.6 36,200 5.9
GW 34,000 27.5 29,200 5.1
GL 31,400 20.4 23,200 4.2
WL 37,100 16.4 46,200 5.4
GW 41,600 25.5 36,900 4.8
GL 38,800 19.2 29,600 3.9
WL 42,900 18.3 47,800 5.9
GW 47,700 28.4 38,300 5.0
GL 44,400 21.2 31,100 4.1
WL
49,900
17.3 58,400 5.5
GW
54,900 26.4
47,500 4.8
GL
51,600
20.1 38,700 3.9
WL 58,800 15.8 70,900 5.2
GW 65,000 22.8 58,100 4.6
GL 61,500 18.2 46,300 3.8
WL 68,000 13.6 80,600 4.6
GW 75,600 19.7 66,200 4.1
GL 70,900 15.7 52,900 3.4
VS015
ECM
VS018
ECM
VS072
ECM
VS042
ECM
VS048
ECM
VS060
ECM
VS024
ECM
VS030
ECM
VS036
ECM
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
AHRI Performance Data, VS, W/ECM Blower

6
Enertech Global IOM, VS/VT Models, Rev A
Note:




1  forUnit
AHRI Performance Data, VT, W/ECM Blower
Section 1: Model Nomenclature and AHRI Data
 
        

        
        
        

        
        
        

        
        
        

        
      1 
        

        
        
        

7
IOM, VS/VT Models, Rev A Enertech Global
Section 2: Installation Introduction
Introduction
This geothermal heat pump provides heating and
cooling as well as optional domestic water heating
capability. Engineering and quality control is built
into every geothermal unit. Good performance
depends on proper application and correct
installation.
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
damaged the nished surface of the unit.
(Keep all cardboard or other packaging material
for safe storage and transport to the job site prior to
installation) Remove 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.
Pre-Installation
Special care should be taken in locating the
geothermal unit. Installation location chosen should
include adequate service clearance around
the unit. All vertical units should be placed on a
formed plastic air pad, or a high density, closed
cell polystyrene pad slightly larger than the base of
the unit. Flex connectors should also be installed in
between the ductwork and the unit. All units should
be located in an indoor area where the ambient
temperature will remain above 55°F and should be
located in a way that piping and ductwork or other
permanently installed xtures do not have to be
removed for servicing.
Pre-Installation Steps
1. Compare the electrical data on the unit
nameplate with packing slip and ordering
information to verify that the correct unit has
been shipped.
2. Remove any packaging used to support or
hold the blower during shipping. Remove
and discard the blower motor armature shaft
shipping bracket from the rear of the blower.
3. Inspect all electrical connections

8
Enertech Global IOM, VS/VT Models, Rev A
Section 2: Installation Introduction
Pre-Installation Steps
1. Compare the electrical data on the unit
nameplate with packing slip and ordering
information to verify that the correct unit has
been shipped.
2. Remove any packaging used to support or
hold the blower during shipping. Remove
and discard the blower motor armature 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 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.
Components
Master Contactor Energizes Compressor and
optional Hydronic Pump and/or Desuperheater
package.
Logic Board 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.
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.
Blower Motor (PSC) PSC blower motor.
Blower Motor (ECM) ECM, Constant CFM blower
motor.
Compressor (Copeland Scroll) Pumps refrigerant
through the heat exchangers and pressurizes the
refrigerant, which increases the temperature of the
refrigerant.
⚠ CAUTION ⚠
DO NOT operate the geothermal heat pump unit
during building construction phase.

9
IOM, VS/VT Models, Rev A Enertech Global
Desuperheater Piping All copper tubes & ttings
should be 5/8” O.D (1/2” nom) minimum with a
maximum of 50ft separation. Piping should be
insulated with 3/8” wall closed cell insulation.
Note: Copper is the only approved material for
desuperheater piping.
UV Light Usage The use of a UV light in the unit return
air plenum should be such that the light does not
have a direct line of sight to the air coil of the unit.
UV lights could cause internal wiring, foam insulation,
or other components to deteriorate. It would be
better to place the UV light in the supply air plenum,
or ductwork. This also helps keep the light cleaner.
Additionally, if a humidier is installed and in line
of the sight of the UV light, consult the humidier
install manual for indication of whether the light will
deteriorate any parts of the humidier (like the pad).
Unit Placement
When installing a geothermal heating and cooling
unit, there are several items the installer should
consider before placing the equipment.
1. Service Access and Installation Space. Is there
enough space for service access? A general
rule of thumb is at least 2 to 2 1/2 feet on the
front and air coil sides depending on return
ductwork size.
2. Unit Air Pad. All vertical geothermal heating
and cooling equipment should be placed
on either a formed plastic air pad, or a high
density, closed cell polyethylene pad. This
helps eliminate vibration noise that could be
transmitted through the oor.
The use of corner pads alone is not
recommended.
3. The installer has veried that all applicable
wiring, ductwork, piping, and accessories are
correct and on the job site.
4. Determine left or right side return air pattern
prior to unit assembly and installation
Section 3: Installation Considerations
Consumer Instructions
Dealer should instruct the consumer in proper
operation, maintenance, thermostat and indicator
lights. Also provide the consumer with the
manufacturer’s Owner’s Manual for the equipment
being installed.
Enertech Global D-I-Y Policy
Enertech Global’s geothermal heat pumps and
system installations may include electrical, refrigerant
and/or water connections. Federal, state and local
codes and regulations apply to various aspects of the
installation. Improperly installed equipment can lead
to equipment failure and health/safety concerns. For
these reasons, only qualied technicians should install
a Enertech Global built geothermal system.
Because of the importance of proper installation,
Enertech Global does not sell equipment direct to
homeowners. Internet websites and HVAC outlets may
allow for purchases directly by homeowners and do-
it-yourselfers, but Enertech Global offers no warranty
on equipment that is purchased via the internet or
installed by persons without proper training.
Enertech Global has set forth this policy to ensure
installations of Enertech Global geothermal systems
are done safely and properly. The use of well-trained,
qualied technicians helps ensure that your system
provides many years of comfort and savings.
Equipment Installation Special care should be
taken in locating the unit. All vertical units should
be placed on a vibration absorbing pad (air pad)
slightly larger than the base of the unit. 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 ductwork or other
permanently installed xtures do not have to be
removed for servicing.
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.
⚠ CAUTION ⚠
This 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 certied for outdoor applications.
Such installation will void all warranties.

10
Enertech Global IOM, VS/VT Models, Rev A
Typical Supply and Return Ductwork Connections
Flex Connectors
Supply Air
Dealer Provided
Indoor Air Quality
return duct system
SOURCE WATER IN
SOURCEWATER OUT
HOT WATER OUT
HOT WATER IN
CONDENSATE DRAIN
Dealer Provided
air duct system
Equipment Pad
2” Polyethylene Foam
NOTE: Maintain duct size of supply ange for at least
12” before transitioning to size of supply plenum
designed for duct system.
Duct Work
All new ductwork shall be designed as outlined
in Sheet Metal and Air Conditioning Contractors
National Association (SMACNA) or Air Conditioning
Contractors of America (ACCA) or American
Society of Heating, Refrigerating and Air
Conditioning Engineers (ASHRAE) handbooks. All YT
Models do not have more than 2% air leakage
All supply/return plenums should be isolated
from the unit by a exible connector (canvas) or
equivalent to prevent transfer of vibration noise
to the ductwork. The ex connector should be
designed so as not to restrict airow. Turning vanes
should be used on any transition with airow over
500 CFM. All metal ductwork should be insulated on
the inside to prevent heat loss/gain, condensation
and to absorb air noise. If the unit is being installed
with existing ductwork, the ductwork must be
designed to handle the air volume required by
the unit being installed. When running a cooling
or heating load on a building, size ductwork
accordingly to the building design load and heat
pump CFM.
Industry Standard: When sizing ductwork use 400
CFM per Ton.
As a general rule, maximum recommended face
velocity for a supply outlet used in a residential
application is 750 FPM. Maximum recommended
return grille velocity is 600 FPM. Systems with higher
velocity, are likely to have noise problems.
In buildings where ceilings are 8 feet or more, at
least 50 percent of the return air should be taken
back to the heat pump from the ceiling or high
sidewall location and not more than 50 percent
from the oor or low sidewall location.
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
Section 3: Installation Considerations

11
IOM, VS/VT Models, Rev A Enertech Global
Dimensional Data and Installation Clearances
Section 4: Unit Data Information
DETAIL A
A
B




A
B
C
K
D
M
O
N
E
F
GJ
L
H
Q
1.00
U
T
S
R
Optional Filter Rack
Tonnage Order Item #
006-012 AFR1721A
015-036 AFR2226A
042-072 AFR2430A
Note:
The Return Duct Dimensions
Are The Same For The Unit
And The Filter Rack.
The Filter Rack Causes The
Return Duct To Be Offset From
The Unit By 2.34 inches
See Detail A
Enertech Recommends A Minimum of 2
to 2 1/2 Feet of Service Area Clearance
For Installation And Maintenance.

2.34
Notes:
Right hand return dimensions are mirrored to the opposite side
as the left hand return dimensions.
Commercial units 006-012 Tons have 3/4" FPT source water connections.
Commercial units 015-072 Tons have 1" FPT source water connections
Residential units have 1" Double O-Ring source water connections.
All Desuperheater connections are 3/4" FPT.
All electrical knockouts are sized for 1/2" or 3/4" conduit.
All measurements are in inches.
All drawings are typical, individual models will vary.
CONDENSATE
DRAIN
HIGH VOLTAGE
T-STAT
CONNECTION
EXTERNAL
ELECTRIC HEAT
EXTERNAL
PUMP SUPPLY
SOURCE WATER IN
SOURCE WATER OUT
HOT WATER IN
HOT WATER OUT
P




SOURCE WATER IN
P
EXTERNAL
ELECTRIC HEAT
HIGH VOLTAGE
T-STAT
CONNECTION
EXTERNAL
PUMP SUPPLY
HOT WATER IN
HOT WATER OUT
SOURCE WATER OUT
CONDENSATE DRAIN
1.00
Q
H
L
G
F
E
N
O
M
D
K
C
C*
1.00
Close Coupled
Electric Heater
1.00 1.00
REV DESCRIPTION
A ADDED HEATER
B ADDED 009-012 042-072
C ADDED 006
D ADDED PLASTIC PAN
ECN
15-137-N02
15-219-N02
16-048-N13
16-323-N20
DATE APPROVED
4/30/15 M.TRIPP
6/3/15 M.TRIPP
6/20/16 M.TRIPP
11/14/2016 M.TRIPP
20D801-14NN
DIMENSIONAL DATA TABLE
*** *** ***
A21.50 22.50 22.50 22.50 25.00 25.00
B21.50 22.50 22.50 22.50 27.88 27.88
C30.00 37.25 37.25 37.25 41.00 41.00
C* N/A 4.75 4.75 4.75 6.50 6.50
D3.10 3.10 13.34 3.10 3.10 12.75
E14.125 22.10 22.10 22.10 16.63 16.63
FN/A 26.88 26.88 26.88 24.13 24.13
GN/A 29.63 29.63 29.63 26.88 26.88
H5.375 8.75 8.75 5.38 5.38 5.38
J19.50 20.00 20.00 20.00 23.00 23.00
K15.50 25.00 25.00 25.00 29.00 29.00
L12.67 10.43 10.43 10.43 10.17 10.17
M5.625 5.13 5.13 5.13 5.13 5.13
N7.375 6.88 6.88 6.88 6.88 6.88
O9.375 8.88 8.88 8.88 8.88 8.88
P11.875 11.38 11.38 11.38 11.38 11.38
Q8.375 5.38 5.38 N/A N/A N/A
R12.50 12.50 12.50 12.50 15.98 15.98
S11.625 11.63 11.63 11.63 15.98 15.98
T4.94 5.39 5.39 5.39 5.95 5.95
U1.93 2.88 2.88 2.88 1.12 1.12
006 - 012MODEL SIZE
042 - 072
OVERALL
CABINET
Note: Add C* to C For Units With Close
Coupled Heater
015 - 036
ELECTRICAL
KNOCKOUTS
NOTE:
* UNITS WITHOUT INTERNAL LOOP PUMP
** UNITS WITH INTERNAL LOOP PUMP
*** UNITS WITH COMPOSITE DRAIN PAN
RETURN AIR
DIMENSIONS
WATER
CONNECTIONS
SUPPLY AIR
DIMENSIONS
Note: Dimensions Are The Same For
Units With Close Coupled Heater

12
Enertech Global IOM, VS/VT Models, Rev A
UNIT DESCRIPTION A B C D E
006-012
015-036
042-072
RETURN DUCT FLANGES
RETURN DUCT FLANGES
RETURN DUCT FLANGES
1" COMMERCIAL RACK
1" COMMERCIAL RACK
1" COMMERCIAL RACK
1" - 2" DELUXE RACK
1" - 2" DELUXE RACK
1" - 2" DELUXE RACK
1.83
15.50
15.50
15.50
25.00
25.00
1.83
1.83
1.8323.00
23.00
23.00
20.00
19.50
19.50
20.00
19.50
20.00
29.00
29.00
29.00
1.83
1.83
1.83
25.00
1.83
1.83
3.25
3.25
1.75
1.30
1.00
1.00
1.30
1.00
1.30
1.00
1.75
3.00
1.00
3.25
3.00
3.00
1.75
1.00
A
B
C
D
E
A
C
B
D
E
C
A
B
E
D
A
C
E
B
D
A
C
E
B
D
B
D
EA
C

 
 


LEFT HAND RETURN MODELS RIGHT HAND RETURN MODELS
Section 4: Unit Data Information

13
IOM, VS/VT Models, Rev A Enertech Global
Section 4: Unit Data Information
Unit Physical Data
*Always check the unit data plate for charge volume
Unit Physical Data
Model Number 006 009 012 015 018 024 030 036 042 048 060 072 024 036 048 060 072
Compressor Type
Fan Wheel (in.) 9 x 7 10 x 8 9 x 7 10 x 8
Fan Motor PSC (HP) 1/4 1/4 1/3 1/3 1/2 1/2 3/4 1 1 N/A N/A N/A N/A N/A
Fan Motor ECM (HP) N/A N/A N/A 1/2 1/2 1/2 1/2 1/2 3/4 3/4 1 1 1/2 1/2 3/4 1 1
Refrigerant Charge
(oz.)
29 30 28.5 41 43 45 53 54 69 69 65 70 45 54 69 69 64
Face Area (Sq. Ft.)
Dimensions (in.)
Number of Rows
Shipped Unit Weight
(Nominal) lbs. 187 187 187 234 240 248 265 271 357 360 375 367 248 271 361 373 375
N/A Micro-Channel Coil
25.4 x 19.8 x 1 28.9 x 23.7 x 1.26
Single Stage Scroll
6x 8
1/10
Single Stage Rotary
15.5 x 18.8 x 1
11 x 10
25.4 x 19.8 x 1
11 x 10
Dual Stage Unloading Scroll
VS/VT Vertical Packaged Unit
Air Coil
4.76
28.9 x 23.7 x 1.26
4.763.492.02
9 x 7
3.49

14
Enertech Global IOM, VS/VT Models, Rev A
20D237‐10NN:VS‐ECMElectricalData
Volts Phase LRA RLA
00 208/230 1 26.0 5.5 3.9 0.0 0.0 9.4 10.8 15
10 208/230 1 26.0 5.5 3.9 0.0 4.0 13.4 14.8 20
A 265 1 28.0 5.0 3.2 0.0 0.0 8.2 9.5 10
00 208/230 1 48.0 9.0 3.9 0.0 0.0 12.9 15.2 20
01 208/230 1 48.0 9.0 3.9 0.5 0.0 13.4 15.7 25
10 208/230 1 48.0 9.0 3.9 0.0 4.0 16.9 19.2 25
11 208/230 1 48.0 9.0 3.9 0.5 4.0 17.4 19.7 25
A 265 1 43.0 7.1 3.2 0.0 0.0 10.3 12.1 15
00 208/230 1 58.3 13.5 3.9 0.0 0.0 17.4 20.8 30
01 208/230 1 58.3 13.5 3.9 0.5 0.0 17.9 21.3 35
10 208/230 1 58.3 13.5 3.9 0.0 4.0 21.4 24.8 35
11 208/230 1 58.3 13.5 3.9 0.5 4.0 21.9 25.3 35
20 208/230 3 55.4 7.1 3.9 0.0 0.0 11.0 12.8 20
21 208/230 3 55.4 7.1 3.9 0.5 0.0 11.5 13.3 20
30/35 460 3 28.0 3.5 3.2 0.0 0.0 6.7 7.6 10
A 265 1 54.0 9.0 3.2 0.0 0.0 12.2 14.5 20
00 208/230 1 64.0 12.8 3.9 0.0 0.0 16.7 19.9 30
01 208/230 1 64.0 12.8 3.9 0.5 0.0 17.2 20.4 30
10 208/230 1 64.0 12.8 3.9 0.0 4.0 20.7 23.9 35
11 208/230 1 64.0 12.8 3.9 0.5 4.0 21.2 24.4 35
20 208/230 3 58.0 8.3 3.9 0.0 0.0 12.2 14.3 20
21 208/230 3 58.0 8.3 3.9 0.5 0.0 12.7 14.8 20
30/35 460 3 28.0 5.1 3.2 0.0 0.0 8.3 9.6 15
A 265 1 60.0 10.9 3.2 0.0 0.0 14.1 16.8 25
00 208/230 1 79.0 16.7 5.2 0.0 0.0 21.9 26.1 40
01 208/230 1 79.0 16.7 5.2 0.5 0.0 22.4 26.6 40
10 208/230 1 79.0 16.7 5.2 0.0 4.0 25.9 30.1 45
11 208/230 1 79.0 16.7 5.2 0.5 4.0 26.4 30.6 45
20 208/230 3 73.0 10.4 5.2 0.0 0.0 15.6 18.2 25
21 208/230 3 73.0 10.4 5.2 0.5 0.0 16.1 18.7 25
30/35 460 3 38.0 5.8 4.7 0.0 0.0 10.5 12.0 15
A 265 1 72.0 13.5 4.7 0.0 0.0 18.2 21.6 35
00 208/230 1 109.0 16.7 5.2 0.0 0.0 21.9 26.1 40
01 208/230 1 109.0 16.7 5.2 0.5 0.0 22.4 26.6 40
10 208/230 1 109.0 16.7 5.2 0.0 5.5 27.4 31.6 45
11 208/230 1 109.0 16.7 5.2 0.5 5.5 27.9 32.1 45
20 208/230 3 88.0 11.2 5.2 0.0 0.0 16.4 19.2 30
21 208/230 3 88.0 11.2 5.2 0.5 0.0 16.9 19.7 30
30/35 460 3 44.0 5.6 4.7 0.0 0.0 10.3 11.7 15
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, 460/60 = 432-504, 575/60 = 540-630, 265/60 = 249-291
5. See Wiring Diagrams for proper 460V and 575V power.
*The external loop pump FLA is based on a maximum of three UP26-116F-230V pumps (1/2hp) for 048-072 and two pumps
for 015-036.
Total
Unit FLA
Min
Circuit
AMPS
Max
Fuse
HACR
VS024
Compressor
VS036
VS042
Model
VS030
VS015
60 Hz Power Fan
Motor
FLA
HWG
Pump
FLA
Voltage
Code/ HWG
Option
VS018
Ext.
Loop
Pump
FLA
Section 4: Unit Data Information
VS - ECM Electrical Data - 015-042

15
IOM, VS/VT Models, Rev A Enertech Global
Section 4: Unit Data Information
Volts Phase LRA RLA
00 208/230 1 130.0 19.6 5.2 0.0 0.0 24.8 29.7 45
01 208/230 1 130.0 19.6 5.2 0.5 0.0 25.3 30.2 50
10 208/230 1 130.0 19.6 5.2 0.0 5.5 30.3 35.2 50
11 208/230 1 130.0 19.6 5.2 0.5 5.5 30.8 35.7 50
20 208/230 3 83.1 13.7 5.2 0.0 0.0 18.9 22.3 35
21 208/230 3 83.1 13.7 5.2 0.5 0.0 19.4 22.8 35
30/35 460 3 41.0 6.2 4.7 0.0 0.0 10.9 12.5 15
00 208/230 1 144.2 24.4 6.9 0.0 0.0 31.3 37.4 60
01 208/230 1 144.2 24.4 6.9 0.5 0.0 31.8 37.9 60
10 208/230 1 144.2 24.4 6.9 0.0 5.5 36.8 42.9 60
11 208/230 1 144.2 24.4 6.9 0.5 5.5 37.3 43.4 60
20 208/230 3 110.0 16.0 6.9 0.0 0.0 22.9 26.9 40
21 208/230 3 110.0 16.0 6.9 0.5 0.0 23.4 27.4 40
30/35 460 3 52.0 7.8 6.0 0.0 0.0 13.8 15.8 20
00 208/230 1 178.0 30.8 6.9 0.0 0.0 37.7 45.4 70
01 208/230 1 178.0 30.8 6.9 0.5 0.0 38.2 45.9 70
10 208/230 1 178.0 30.8 6.9 0.0 5.5 43.2 50.9 80
11 208/230 1 178.0 30.8 6.9 0.5 5.5 43.7 51.4 80
20 208/230 3 136.0 19.6 6.9 0.0 0.0 26.5 31.4 50
21 208/230 3 136.0 19.6 6.9 0.5 0.0 27.0 31.9 50
30/35 460 3 66.1 8.2 6.0 0.0 0.0 14.2 16.3 20
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, 460/60 = 432-504, 575/60 = 540-630, 265/60 = 249-291
5. See Wiring Diagrams for proper 460V and 575V power.
*The external loop pump FLA is based on a maximum of three UP26-116F-230V pumps (1/2hp) for 048-072 and two pumps
for 015-036.
Voltage
Code/ HWG
Option
VS072
Min
Circuit
AMPS
VS048
Model
VS060
60 Hz Power Ext.
Loop
Pump
FLA
Total
Unit FLA
Max
Fuse
HACR
Compressor Fan
Motor
FLA
HWG
Pump
FLA
VS - ECM Electrical Data - 048-072

16
Enertech Global IOM, VS/VT Models, Rev A
Section 4: Unit Data Information
20D237‐09NN:VS‐PSCElectricalData
Volts Phase LRA RLA
00 208/230 1 17.7 2.5 0.8 0.0 0.0 3.3 3.9 10
10 208/230 1 17.7 2.5 0.8 0.0 4.0 7.3 8.3 10
A0 265 1 13.5 2.1 0.7 0.0 0.0 2.8 3.3 10
90 115 1 36.2 5.0 1.5 0.0 0.0 6.5 7.8 10
00 208/230 1 20.0 4.4 0.8 0.0 0.0 5.2 6.3 10
10 208/230 1 20.0 4.4 0.8 0.0 4.0 9.2 10.3 15
A0 265 1 21.0 3.4 0.7 0.0 0.0 4.1 4.9 10
90 115 1 50.0 7.8 1.5 0.0 0.0 9.3 11.3 15
00 208/230 1 26.0 4.7 0.8 0.0 0.0 5.5 6.7 10
10 208/230 1 26.0 4.7 0.8 0.0 4.0 9.5 10.7 15
A0 265 1 22.0 4.2 0.7 0.0 0.0 4.9 6.0 10
00 208/230 1 26.0 5.5 1.5 0.0 0.0 7.0 8.4 10
10 208/230 1 26.0 5.5 1.5 0.0 4.0 11.0 12.4 15
A0 265 1 28.0 5.0 2.0 0.0 0.0 7.0 8.3 10
00 208/230 1 48.0 9.0 1.5 0.0 0.0 10.5 12.8 20
01 208/230 1 48.0 9.0 1.5 0.5 0.0 11.0 13.3 20
10 208/230 1 48.0 9.0 1.5 0.0 4.0 14.5 16.8 25
11 208/230 1 48.0 9.0 1.5 0.5 4.0 15.0 17.3 25
A 265 1 43.0 7.1 2.0 0.0 0.0 9.1 10.9 15
00 208/230 1 58.3 13.5 1.9 0.0 0.0 15.4 18.8 30
01 208/230 1 58.3 13.5 1.9 0.5 0.0 15.9 19.3 30
10 208/230 1 58.3 13.5 1.9 0.0 4.0 19.4 22.8 35
11 208/230 1 58.3 13.5 1.9 0.5 4.0 19.9 23.3 35
20 208/230 3 55.4 7.1 1.9 0.0 0.0 9.0 10.8 15
21 208/230 3 55.4 7.1 1.9 0.5 0.0 9.5 11.3 15
30/35 460 3 28.0 3.5 0.9 0.0 0.0 4.4 5.3 10
40/45 575 3 24.5 2.9 1.1 0.0 0.0 4.0 4.7 10
A 265 1 54.0 9.0 2.2 0.0 0.0 11.2 13.5 20
00 208/230 1 64.0 12.8 1.9 0.0 0.0 14.7 17.9 30
01 208/230 1 64.0 12.8 1.9 0.5 0.0 15.2 18.4 30
10 208/230 1 64.0 12.8 1.9 0.0 4.0 18.7 21.9 35
11 208/230 1 64.0 12.8 1.9 0.5 4.0 19.2 22.4 35
20 208/230 3 58.0 8.3 1.9 0.0 0.0 10.2 12.3 20
21 208/230 3 58.0 8.3 1.9 0.5 0.0 10.7 12.8 20
30/35 460 3 28.0 5.1 0.9 0.0 0.0 6.0 7.3 10
40/45 575 3 23.7 3.3 1.1 0.0 0.0 4.4 5.2 10
A 265 1 60.0 10.9 2.2 0.0 0.0 13.1 15.8 25
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, 460/60 = 432-504, 575/60 = 540-630, 265/60 = 249-291
5. See Wiring Diagrams for proper 460V and 575V power.
*The external loop pump FLA is based on a maximum of three UP26-116F-230V pumps (1/2hp) for 048-072 and two pumps
for 006-036.
Min
Circuit
AMPS
Max
Fuse
HACR
Model
Voltage
Code/ HWG
Option
60 Hz Power Compressor Ext.
Loop
Pump
FLA
Total
Unit FLA
VS024
Fan
Motor
FLA
HWG
Pump
FLA
VS006
VS009
VS012
VS015
VS018
VS030
VS - PSC Electrical Data - 006-030

17
IOM, VS/VT Models, Rev A Enertech Global
Section 4: Unit Data Information
Volts Phase LRA RLA
00 208/230 1 79.0 16.7 2.9 0.0 0.0 19.6 23.8 40
01 208/230 1 79.0 16.7 2.9 0.5 0.0 20.1 24.3 40
10 208/230 1 79.0 16.7 2.9 0.0 4.0 23.6 27.8 40
11 208/230 1 79.0 16.7 2.9 0.5 4.0 24.1 28.3 45
20 208/230 3 73.0 10.4 2.9 0.0 0.0 13.3 15.9 25
21 208/230 3 73.0 10.4 2.9 0.5 0.0 13.8 16.4 25
30/35 460 3 38.0 5.8 1.2 0.0 0.0 7.0 8.5 10
40/45 575 3 36.5 3.8 1.0 0.0 0.0 4.8 5.8 10
A 265 1 72.0 13.5 3.4 0.0 0.0 16.9 20.3 30
00 208/230 1 109.0 16.7 2.9 0.0 0.0 19.6 23.8 40
01 208/230 1 109.0 16.7 2.9 0.5 0.0 20.1 24.3 40
10 208/230 1 109.0 16.7 2.9 0.0 5.5 25.1 29.3 45
11 208/230 1 109.0 16.7 2.9 0.5 5.5 25.6 29.8 45
20 208/230 3 88.0 11.2 2.9 0.0 0.0 14.1 16.9 25
21 208/230 3 88.0 11.2 2.9 0.5 0.0 14.6 17.4 25
30/35 460 3 44.0 5.6 1.2 0.0 0.0 6.8 8.2 10
40/45 575 3 34.0 3.8 1.0 0.0 0.0 4.8 5.8 10
00 208/230 1 130.0 19.6 4.0 0.0 0.0 23.6 28.5 45
01 208/230 1 130.0 19.6 4.0 0.5 0.0 24.1 29.0 45
10 208/230 1 130.0 19.6 4.0 0.0 5.5 29.1 34.0 50
11 208/230 1 130.0 19.6 4.0 0.5 5.5 29.6 34.5 50
20 208/230 3 83.1 13.7 4.0 0.0 0.0 17.7 21.1 35
21 208/230 3 83.1 13.7 4.0 0.5 0.0 18.2 21.6 35
30/35 460 3 41.0 6.2 2.1 0.0 0.0 8.3 9.9 15
40/45 575 3 33.0 4.8 3.8 0.0 0.0 7.9 9.1 10
00 208/230 1 144.2 24.4 5.6 0.0 0.0 30.0 36.1 60
01 208/230 1 144.2 24.4 5.6 0.5 0.0 30.5 36.6 60
10 208/230 1 144.2 24.4 5.6 0.0 5.5 35.5 41.6 60
11 208/230 1 144.2 24.4 5.6 0.5 5.5 36.0 42.1 60
20 208/230 3 110.0 16.0 5.6 0.0 0.0 21.6 25.6 40
21 208/230 3 110.0 16.0 5.6 0.5 0.0 22.1 26.1 40
30/35 460 3 52.0 7.8 2.6 0.0 0.0 10.4 12.4 20
40/45 575 3 38.9 5.7 2.1 0.0 0.0 7.8 9.2 15
00 208/230 1 178.0 30.8 5.6 0.0 0.0 36.4 44.1 70
01 208/230 1 178.0 30.8 5.6 0.5 0.0 36.9 44.6 70
10 208/230 1 178.0 30.8 5.6 0.0 5.5 41.9 49.6 80
11 208/230 1 178.0 30.8 5.6 0.5 5.5 42.4 50.1 80
20 208/230 3 136.0 19.6 5.6 0.0 0.0 25.2 30.1 50
21 208/230 3 136.0 19.6 5.6 0.5 0.0 25.7 30.6 50
30/35 460 3 66.1 8.2 2.6 0.0 0.0 10.8 12.9 20
40/45 575 3 55.3 6.6 2.1 0.0 0.0 8.7 10.4 15
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, 460/60 = 432-504, 575/60 = 540-630, 265/60 = 249-291
5. See Wiring Diagrams for proper 460V and 575V power.
*The external loop pump FLA is based on a maximum of three UP26-116F-230V pumps (1/2hp) for 048-072 and two pumps
for 006-036.
VS042
VS048
VS060
VS072
Max
Fuse
HACR
Model
60 Hz Power Compressor Fan
Motor
FLA
Ext.
Loop
Pump
FLA
Min
Circuit
AMPS
HWG
Pump
FLA
Voltage
Code/ HWG
Option
Total
Unit FLA
VS036
VS - PSC Electrical Data - 036-072

18
Enertech Global IOM, VS/VT Models, Rev A
20D237‐11NN:VTElectricalData
Volts Phase LRA RLA
00 208/230 1 58.3 11.7 3.9 0.0 0.0 15.6 18.5 30
01 208/230 1 58.3 11.7 3.9 0.5 0.0 16.1 19.0 30
10 208/230 1 58.3 11.7 3.9 0.0 4.0 19.6 22.5 30
11 208/230 1 58.3 11.7 3.9 0.5 4.0 20.1 23.0 35
20 208/230 3 55.4 6.5 3.9 0.0 0.0 10.4 12.0 15
21 208/230 3 55.4 6.5 3.9 0.5 0.0 10.9 12.5 15
30/35 460 3 28.0 3.5 3.2 0.0 0.0 6.7 7.6 10
A 265 1 54.0 9.1 3.2 0.0 0.0 12.3 14.6 20
00 208/230 1 83.0 15.6 5.2 0.0 0.0 20.8 24.7 40
01 208/230 1 83.0 15.6 5.2 0.5 0.0 21.3 25.2 40
10 208/230 1 83.0 15.6 5.2 0.0 4.0 24.8 28.7 40
11 208/230 1 83.0 15.6 5.2 0.5 4.0 25.3 29.2 45
20 208/230 3 73.0 11.6 5.2 0.0 0.0 16.8 19.7 30
21 208/230 3 73.0 11.6 5.2 0.5 0.0 17.3 20.2 30
30/35 460 3 38.0 5.7 4.7 0.0 0.0 10.4 11.8 15
A 265 1 72.0 13.0 4.7 0.0 0.0 17.7 21.0 30
00 208/230 1 104.0 21.2 5.2 0.0 0.0 26.4 31.7 50
01 208/230 1 104.0 21.2 5.2 0.5 0.0 26.9 32.2 50
10 208/230 1 104.0 21.2 5.2 0.0 5.5 31.9 37.2 50
11 208/230 1 104.0 21.2 5.2 0.5 5.5 32.4 37.7 50
20 208/230 3 83.1 14.0 5.2 0.0 0.0 19.2 22.7 35
21 208/230 3 83.1 14.0 5.2 0.5 0.0 19.7 23.2 35
30/35 460 3 41.0 6.4 4.7 0.0 0.0 11.1 12.7 15
A 265 1 109.7 16.0 4.7 0.0 0.0 20.7 24.7 40
00 208/230 1 152.9 27.1 6.9 0.0 0.0 34.0 40.8 60
01 208/230 1 152.9 27.1 6.9 0.5 0.0 34.5 41.3 60
10 208/230 1 152.9 27.1 6.9 0.0 5.5 39.5 46.3 70
11 208/230 1 152.9 27.1 6.9 0.5 5.5 40.0 46.8 70
20 208/230 3 110.0 16.5 6.9 0.0 0.0 23.4 27.5 40
21 208/230 3 110.0 16.5 6.9 0.5 0.0 23.9 28.0 45
30/35 460 3 52.0 7.2 6.0 0.0 0.0 13.2 15.0 20
A 265 1 130.0 22.4 6.0 0.0 0.0 28.4 34.0 50
00 208/230 1 179.2 29.7 6.9 0.0 0.0 36.6 44.0 70
01 208/230 1 179.2 29.7 6.9 0.5 0.0 37.1 44.5 70
10 208/230 1 179.2 29.7 6.9 0.0 5.5 42.1 49.5 70
11 208/230 1 179.2 29.7 6.9 0.5 5.5 42.6 50.0 80
20 208/230 3 136.0 17.6 6.9 0.0 0.0 24.5 28.9 45
21 208/230 3 136.0 17.6 6.9 0.5 0.0 25.0 29.4 45
30/35 460 3 66.1 8.5 6.0 0.0 0.0 14.5 16.6 25
HWG
Pump
FLA
VT036
Compressor60 Hz Power
Voltage
Code/ HWG
Option
VT048
VT060
Fan
Motor
FLA
Model
VT024
VT072
Ext.
Loop
Pump
FLA
Total
Unit FLA
Min
Circuit
AMPS
Max
Fuse
HACR
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, 460/60 = 432-504, 575/60 = 540-630, 265/60 = 249-291
5. See Wiring Diagrams for proper 460V and 575V power.
*The external loop pump FLA is based on a maximum of three UP26-116F-230V pumps (1/2hp) for 048-072 and two pumps
for 024-036.
VT - ECM Electrical Data - 024-072
Section 4: Unit Data Information

19
IOM, VS/VT Models, Rev A Enertech Global
PSC Fan Performance, Single Stage Compressor Units
0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.60 0.70 0.80
H 350(009,012) 410 400 400 390 380 375 360 350 335 300 265
M/H 370 355 350 340 335 320 300 275 249
M/L 275[phone] 325 315 305 295 285 275 260
L290 280 270 265 255 243 232
H 1120 1110 1090 1065 1040 1015 990 960 935 870 770 595
M700[phone] 770 760 750 740 730 715 695 635 525 342
L600[phone] 660 660 650 640 630 610 590 525 430 291
H1000[phone] 1200 1170 1145 1120 1090 1060 1025 955 860 720
M800[phone] 945 940 925 915 900 890 870 830 755 625
L 810 810 815 810 810 805 800 790 775 740 670 543
H1200 1445 1430 1420 1410 1400 1388 1375 1360 1340 1290 1215 1120
M 985 990 990 995 995 995 995 990 985 960 920 860
L 840 850 850 855 860 860 865 860 860 840 805 755
H1450 1500 1510 1510 1510 1510 1515 1520 1520 1505 1490 1465 1425
M 890 890 895 890 895 885 880 872 865 856 839 814
L 756 759 756 751 740 734 736 734 730 701 658 633
H 1945 1940 1940 1945 1950 1950 1950 1945 1930 1880 1820 1750
M1550 1480 1485 1500 1510 1515 1530 1540 1545 1540 1515 1485 1430
L 1150 1180 1190 1200 1210 1215 1225 1225 1220 1220 1205 1170
H2100[phone] 2210 2160
M1850[phone] 1905 1905 1905 1910 1915 1920 1930 1915 1880 1795
L 1450 1475 1500 1515 1525 1545 1550 1560 1570 1560 1540 1495
Notes:
015/018
024/030 9x7 1/3
6x9
006/009
/012
1.PSCBlowermotorscomewith3or4speedtaps.Tochangethespeedofthemotortoahigherorlowerspeed,removetheelectricboxcoverthatis
mountedontheblower.Locatethelabelonthemotortoidentifythewirecolorforeachspeed.Removethewirenutontheexistingspeedand
replacewiththewireofselectedspeed.
9x7 1/4
1/16
*VSSeriesPSCFanPerformanceData
Model Motor
Speed
Blower
Size
Motor
HP CFMNominal
StaticPressure(inchesw.c.)
036 10x8 1/2
11x10
042 11x10 1/2
3/4
060/072 11x10 1
048
2.MaxESPforVS015throughVS036modelswithexternalelectricheatis0.6in.w.c.andforVS042throughVS072modelsitis0.9in.w.c..ExceedingtheMaxESPmayresultinnuisance
tripsoftheelectricheat.Thermallimitsareratedat100,000cycles.
3.VS042modelswithexternalelectricheatMUSTberanattheHighspeedtapinordertoavoidnuisancetrips.
Section 4: Unit Data Information
1st 2nd 1st 2nd 1st 2nd S1 S2 S3 S4 S5 S6 S7 S8
A‐660 ‐660 ‐550 330 ‐OFF OFF OFF OFF OFF OFF OFF OFF
B‐550 ‐550 ‐490 290 ‐ON OFF OFF OFF ON OFF OFF OFF
C‐490 ‐490 ‐400 240 ‐OFF ON OFF OFF OFF ON OFF OFF
D‐410 ‐400 ‐200 ‐ON ON OFF OFF ON ON OFF OFF
A‐750 ‐750 ‐640 375 ‐OFF ON OFF OFF OFF ON OFF OFF
B‐700 ‐700 ‐595 350 ‐ON ON ON OFF ON ON OFF OFF
C‐640 ‐640 ‐540 320 ‐ON ON OFF OFF ON ON OFF OFF
D‐570 ‐570 ‐490 290 ‐ON ON OFF ON ON ON OFF OFF
A550 880 550 880 470 750 440 870 ON OFF ON OFF ON OFF OFF OFF
B500 800 500 800 425 680 400 810 ON OFF OFF OFF ON OFF OFF OFF
C450 720 450 720 383 612 360 730 ON OFF OFF ON ON OFF OFF OFF
D430 680 430 680 361 574 340 730 OFF ON OFF ON OFF ON OFF OFF
A‐1100 ‐1100 ‐935 550 1100 OFF OFF ON OFF OFF OFF OFF OFF
B‐1000 ‐1000 ‐850 500 990 OFF OFF OFF OFF OFF OFF OFF OFF
C‐900 ‐900 ‐765 450 890 OFF OFF OFF ON OFF OFF OFF OFF
D‐800 ‐800 ‐680 400 790 ON OFF OFF OFF ON OFF OFF OFF
A880 1320 880 1210 750 1030 605 1480 OFF ON ON OFF OFF ON OFF OFF
B800 1200 800 1100 680 935 550 1400 OFF ON OFF OFF OFF ON OFF OFF
C720 1080 720 990 614 842 495 1270 OFF ON OFF ON OFF ON OFF OFF
D640 990 640 880 546 748 440 1140 ON ON ON OFF ON ON OFF OFF
A‐1510 ‐1600 ‐1350 730 1660 On Off On Off On Off Off Off
B‐1400 ‐1450 ‐1235 660 1490 On Off Off Off On Off Off Off
C‐1220 ‐1300 ‐1120 590 1330 On Off Off On On Off Off Off
D‐1110 ‐1200 ‐1030 490 1220 On On Off Off On On Off Off
A1380 1710 1380 1770 1175 1500 810 1880 Off On On Off Off On Off Off
B1250 1540 1270 1610 1060 1345 750 1720 Off On Off Off Off On Off Off
C1130 1400 1190 1430 940 1225 670 1540 Off On Off On Off On Off Off
D1000 1220 1000 1260 835 1065 610 1350 On On On Off On On Off Off
A1850 2180 1800 2200 1500 1850 1030 2190 Off Off On Off Off Off Off Off
B1680 1980 1580 2000 1350 1650 940 1990 Off Off Off Off Off Off Off Off
C1500 1700 1430 1750 1200 1475 820 1770 Off Off Off On Off Off Off Off
D1160 1350 1250 1500 1050 1275 710 1430 Off On Off Off Off On Off Off
A‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
B 1850 2180 1800 2200 1500 1850 1030 2190 Of
f
Of
f
On Of
f
Of
f
Of
f
Of
f
Of
f
C 1680 1980 1580 2000 1350 1650 940 1990 Off Off Off Off Off Off Off Off
D 1500 1700 1430 1750 1200 1475 820 1770 Off Off Off On Off Off Off Off
Notes:
S9 S10
ON OFF
OFF ON
OFF OFF
ON ON
Notes:
3.Powermustbeofftotheunitforatleast3secondsbeforetheECMmotorwillrecognizeaprogramchange.
048
1.Toenterdehumidificationmode,ODDinputshouldbe0VAC;fornormalcoolingCFM,ODDinputshouldbe24VAC.
2.HeatingCFMisnotaffectedbydehumidificationmode.Whenindehumidificationmode,coolingCFMis85%ofnormalCFM.
OnDemandDehumidificationmode(humidistatinputatterminalODD)‐‐Humidistat
required.
1.1
1.1
0.9
1.ProgramB
(
BoldType
)
is
f
actorysettingsandratedCFM.CFMiscontrolledwithin5%uptotheMaxESP
.
2.MaxESPincludesallowanceforwetcoilandNOFILTER
072
NotUsed Notanapplicableselection.
060
ConstantDehum ConstantDehumidificationmode(alwaysusesdehumCFMforcoolingandnormalCFMfor
heating)‐‐Nohumidistatrequired.
4.MaxESPforVS015andVS018modelswithexternalelectricheatis0.9in.w.c.;forVS/VT024throughVS/VT036modelsitis0.6in.w.c.;andforVS042throughVS/VT072itis0.9in.
w.c.ExceedingtheMaxESPmayresultinnuisancetripsoftheelectricheat.Thermallimitsareratedat100,000cycles.
*VS/*VTSeriesDehumidificationModeOption
s
DIPSwitch Mode Operation
Normal Dehumidificationmodedisabled(NormalHtg/ClgCFM)‐‐Factorysetting.
ODD
030
*VS/*VTSeriesECMFanPerformanceData:One&Two‐StageCompressorUnit
s
Model Program
3
HeatingMode CoolingMode Dehumidification
Mode Fan
Only
DIPSwitchSettings
AUX/
EMG
Heat
Max
ESP
in.w.c.
2
036
042
018
024
015 1.1
1.1
1.1
1.1
1.1
1.1
ECM Fan Performance, Single & Two-Stage Compressor Units

20
Enertech Global IOM, VS/VT Models, Rev A
Water Flow Calculations and Selection
Proper ow rate is crucial for reliable operation of
geothermal heat pumps. The performance data
shows three ow rates for each entering water
temperature (EWT column). The general “rule of
thumb” when selecting ow rates is the following:
Top ow rate: Open loop systems (1.5 to 2.0 gpm
per ton)
Middle ow rate: Minimum closed loop system ow
rate (2.25 to 2.50 gpm/ton)
Bottom ow rate: Nominal (optimum) closed loop
system ow rate (3.0 gpm/ton)
Although the industry standard is adequate in most
areas of North America, it is important to consider
the application type before applying this “rule
of thumb.” Antifreeze is generally required for all
closed loop (geothermal) applications. Extreme
Southern U.S. locations are the only exception.
Open loop (well water) systems cannot use
antifreeze, and must have enough ow rate in order
to avoid freezing conditions at the Leaving Source
Water Temperature (LWT) connection.
Calculations must be made for all systems without
antifreeze to determine if the top ow rate is
adequate to prevent LWT at or near freezing
conditions. The following steps should be taken in
making this calculation:
Determine minimum EWT based upon your
geographical area.
Go to the performance data table for the heat
pump model selected and look up the the Heat of
Extraction (HE) at the “rule of thumb” water ow rate
(GPM) and at the design Entering Air Temperature
(EAT).
Calculate the temperature difference (TD) based
upon the HE and GPM of the model.
TD = HE / (GPM x 500).
Calculate the LWT.
LWT = EWT - TD.
If the LWT is below 35-38°F, there is potential
for freezing conditions if the ow rate or water
temperature is less than ideal conditions, and the
ow rate must be increased.
Example 1:
EWT = 50°F.
Model GXT048, high capacity. Flow rate = 6 GPM.
Air Flow = 1500 CFM. HE = 36,700 Btuh.
TD = 36,700 / (6 x 500) = 12.2°F
LWT = 50 - 12.2 = 37.8°F
Since the water ow is leaving at approximately
38°F, the ow rate is acceptable.
Example 2:
EWT = 40°F.
Model GXT048, high capacity. Flow rate = 6 GPM.
Air Flow = 1500 CFM. HE = 36,700 Btuh.
TD = 36,700 / (6 x 500) = 12.2°F
LWT = 40 - 12.2 = 27.8°F
Water ow rate must be increased to avoid freezing.
Performance Data Notes
1. Capacity data is based upon 15% (by volume) methanol antifreeze solution.
2. Desuperheater capacity is based upon 0.2 GPM Flow per nominal ton at 70°F entering hot water temperature.
3. Interpolation between above categories is permissible; extrapolation is not.
4. See Flow Rate Selection above for proper application.
Section 4: Unit Data Information