Enertech CT024, CT060, CT072, CT036, CT048 Engineering Data And Installation Manual

Download

Engineering Data and

Installation Manual

CT MODELS COMBINATION WATER-TO-AIR MULTI-POSITIONAL HEAT PUMPS

REVISION: A

*20D082-04NN*

20D082-04NN

Table of Contents:

Section 1: Model Nomenclature

Model Nomenclature,...............................................................................................................4 - 5

Section 2: Installation Introduction

Introduction, Pre-Installation, Components............................................................................6 - 7

Section 3: Installation Considerations

Installation Considerations .............................................................................................................8

Section 4: Installation

Unit Placement ................................................................................................................................9

Unit Dimensional and Physical Data....................................................................................10 - 11

Unit Conversion .............................................................................................................................12

Ductwork Installation .............................................................................................................13 - 14

Section 5: Unit Piping Installation

Interior Piping, Water Quality , Buffer Tanks..........................................................................15 - 19

Section 6: Antifreeze

Overview ........................................................................................................................................20

Antifreeze Charging............................................................................................................. 21 - 22

Section 7: Desuperheater Installation

Installation...............................................................................................................................23 - 25

Section 8: Unit Controls, Operating Modes and Wiring Diagrams

Controls ..................................................................................................................................26 - 34

Unit Operation Modes, Forced Air & Hydronic Operation................................................35 - 37

Wiring Diagrams .....................................................................................................................38 - 40

Section 9: Accessories

Auxiliary Electric Heat ...................................................................................................................41

APSMA Pump Sharing Module ....................................................................................................42

Section 10: Equipment Start Up Procedures

Unit Start-Up Checklist and Form.........................................................................................43 - 44

Section 11: Troubleshooting

Troubleshooting, Oil Separator, Superheat/Subcooling Condtions.................................45 - 52

Section 12: Engineering and AHRI Performance Data

Unit Electrical Data ................................................................................................................53 - 54

Water Flow and Heating/Cooling Calculations and Correction Factors........................55 - 56

AHRI, Full Load and Hydronic Heat Extended Data Tables..............................................57 - 73

Section 13: Warranty and Revision Table

Warranty Registrationm and Claim Forms ..........................................................................74 - 75

Revision Tables...............................................................................................................................76

Section 1: GeoComfort® Model Nomenclature

Section 1: Air Handler Model Nomenclature

Enertech Global CT Models, Rev.: A

Section 1: Uncased “A” Coil Model Nomenclature

H -

Section 1: Cased “A” Coil Model Nomenclature

CT 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.

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.

⚠ CAUTION ⚠

DO NOT OPERATE THE GEOTHERMAL

HEAT PUMP UNIT DURING BUILDING

CONSTRUCTION PHASE.

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.

“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.

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

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 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 and lter replacement.

Pre-Installation Steps:

1. Compare the electrical data on the unit

nameplate with packing slip and ordering information to verify that the correct unit has been shipped.

2. Remove any packaging used to support or

hold the blower during shipping. Remove and discard the blower motor armature shaft shipping bracket from the rear of the blower.

3. Inspect all electrical connections

and wires. Connections must be clean and

formed plastic air

Enertech Global CT Models, Rev.: A

Section 2: Installation Introduction

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.

⚠ CAUTION ⚠

ALL GEOTHERMAL EQUIPMENT IS DESIGNED FOR INDOOR INSTALLATION ONLY. DO NOT INSTALL OR STORE UNIT IN A CORROSIVE ENVIRONMENT OR IN

A LOCATION WHERE TEMPERATURE AND

HUMIDITY ARE SUBJECT TO EXTREMES.

EQUIPMENT IS NOT CERTIFIED FOR

OUTDOOR APPLICATIONS. SUCH

INSTALLATION WILL VOID

ALL WARRANTIES.

⚠ 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.

Terminal Strip: Provides connection to the thermostat or other accessories to the low voltage circuit.

Transformer: Converts incoming (source) voltage to 24V AC.

Low Voltage Breaker: Attached directly to transformer, protects the transformer and low voltage circuit.

Blower Motor Relay: Energizes the blower motor (PSC motors only).

Reversing Valve: Controls the cycle of the refrigerant system (heating or cooling). Energized in cooling mode.

Three Way Valve: Is used with radiant water heating combination units. Energized in water heating mode.

High Pressure Switch: Protects the refrigerant system from high refrigerant pressure, by locking unit out if pressure exceeds setting.

Low Pressure Switch: Protects the refrigerant system from low suction pressure, if suction pressure falls below setting.

Flow Switch (Freeze Protection Device): Protects the water heat exchanger from freezing,

by shutting down compressor if water ow

decreases.

⚠ CAUTION ⚠

BEFORE DRILLING OR DRIVING ANY

SCREWS INTO CABINET, CHECK TO BE

SURE THE SCREW WILL NOT HIT ANY

INTERNAL PARTS OR REFRIGERANT LINES.

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).

CT Models, Rev.: A Enertech Global

Electric Heater: Provides auxiliary heat during cold temperatures and provides electric backup if unit malfunctions.

Blower Motor (ECM): ECM (Electrically Communicated Motor) for variable fan speeds.

Compressor (Copeland Scroll): Pumps refrigerant through the heat exchangers and pressurizes the refrigerant, which increases the temperature of the refrigerant.

Oil Separator: Located close to the compressor to effectively remove oil from the high pressure gas leaving the compressor increasing unit

efciency and life expectancy. Shown in

refrigerant circuit illustration on page 65.

Section 3: Installation Considerations

Consumer Instructions: Dealer should instruct the consumer in proper operation,

maintenance, lter replacements, thermostat

and indicator lights. Also provide the consumer with the manufacturer’s Owner's Manual for the equipment being installed.

Enertech Global D-I-Y Policy: Enertech Global’s geothermal heat pumps and system installations may include electrical, refrigerant and/or water connections. Federal, state and local codes and regulations apply to various aspects of the installation. Improperly installed equipment can lead to equipment failure and health/safety

concerns. For these reasons, only qualied

technicians should install a Enertech Global built geothermal system.

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 level surface 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 and lter

replacement.

Electrical: All wiring, line and low voltage, should comply with the manufacturer's recommendations, The National Electrical Code, and all local codes and ordinances.

Thermostat: Thermostats should be installed

approximately 54 inches off the oor on an

inside wall in the return air pattern and where they are not in direct sunlight at anytime.

Loop Pumping Modules: Must be wired to the heat pump’s electric control box. A special entrance knockout is provided below the thermostat entrance knockout. A pump module connection block, connected to the master contactor, and circuit breaker is provided to connect the Pump Module wiring.

Desuperheater Package: Water heating is standard on all residential units (units may be ordered without). It uses excess heat, during both heating and cooling cycles, to provide hot water for domestic needs. A double wall desuperheater exchanger (coil) located between the compressor and the reversing valve, extracts superheated vapor to heat domestic water; while satisfying its heating and cooling needs. The water circulation pump comes pre-mounted in all residential units, but must be electrically connected to the master contactor. Leaving it unconnected ensures that the pump is not run without a water supply. The Desuperheater package can make up to 60% (depending on heat pump usage) of most domestic water needs, but a water heater is still recommended.

Desuperheater Piping: All copper tubes & ttings

should be 5/8” O.D (1/2” nom) minimum with a maximum of 50ft separation. Piping should be insulated with 3/8” wall closed cell insulation.

Note: Copper is the only approved material for desuperheater piping.

UV Light Usage:

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).

The use of a UV light in the unit

Enertech Global CT Models, Rev.: A

Section 4: Installation

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. Is there enough space for service access? A general rule of thumb is at least 2 feet in the front and 2 feet on at least one side.

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 polystyrene

pad. Downow units should be placed

on a non-combustible base. This helps eliminate vibration noise that could be

transmitted through the oor.

3. Verify that all applicable wiring, ductwork, piping, and accessories are correct and on the job site.

PRE-INSTALLATION:

Before you fully install the geothermal equipment, it is recommended you go through this quick checklist before placing the equipment.

⧠ Fully inspect the unit after unpacking. ⧠ Open both the air handler section and

compressor section and removed any packaging material or documentation

included in the unit.

⧠ Remove and discard the blower motor

armature shaft shipping bracket from the rear of the blower.

⧠

Locate the Unit Start-Up form from this manual and have it available as the unit

installation proceeds.

⚠ WARNING ⚠

DOWNFLOW UNITS REQUIRE THAT THE

FLOOR OPENING (BETWEEN THE UNIT AND

THE SUPPLY DUCT PLENUM) BE SLEEVED

THROUGH THE FLOOR WITH METAL DUCT.

THIS IS ESPECIALLY IMPORTANT IF THE UNIT

IS SITTING ON A PAD.

⚠ NOTICE ⚠

THE BLOWER SUPPORT BRACKET,

LOCATED ON THE BACK OF THE BLOWER

FOR SHIPPING PURPOSES, MUST BE

REMOVED BEFORE OPERATION. FAILURE

TO REMOVE THE BRACKET COULD RESULT

IN POTENTIALLY NOISY OPERATION AND

EQUIPMENT DAMAGE.

⚠ NOTICE ⚠

THIS UNIT FEATURES A BRAZED-PLATE

HEAT EXCHANGER FOR HYDRONIC

HEATING. TO PREVENT POTENTIAL

EQUIPMENT DAMAGE, A WATER STRAINER

IS PROVIDED AND MUST BE INSTALLED IN

THE WATER INLET CIRCUIT TO PROTECT THE HEAT EXCHANGER FROM PARTIAL

OR COMPLETE BLOCKAGE. IF ANOTHER STRAINER IS USED, IT SHOULD FEATURE A 16-20 MESH MINIMUM, 20-40 MESH IS A

BETTER CHOICE.

⧠

Clean the air coil with soap and water

solution to remove any oil or dirt.

CT Models, Rev.: A Enertech Global

Section 4: Unit Dimensional Data

Condensate

3/4” FPT

Desuperheater Out

Desuperheater In

Load Out

Load In

Source Out

Source In

1.13

ASP

Air Coil

Left View

5.50

ASP

Control Panel Plug Plate

.97

Power Supply 1/2”

High Voltage Supply 1”

Condensate 3/4” FPT

Low Votage 1/2”

27.63

.89

CAP

BSP

CSP

Front & Back View

30.33

28.01

Filter

Rack

Model

024 -

048

060 -

072

Dimensional Data

without Control Box

Height

Width

(A1)

(B)

Depth

(C)

Plenum Flanges

Access Panels

16.00

8.12

LEGEND:

SAP= Service Access Panel BSP CSP CAP ASP FPT

Dimensional Data

with Control Box

Height

(A2)

= Blower Service Panel = Compressor Service Panel = Control Access Panel = Access Service Panel = Female Pipe Thread

56.1 30.3 32.2 62.5 16.0 16.0 13.0 14.0 26.0 28.0

60.1 30.3 32.2 66.5 16.0 16.0 13.0 14.0 26.0 32.0

16.00

Control Box

Top View

Top Discharge

Supply Air

(Top Discharge)

Width Depth Width Depth

Notes:

For the source water loop, GeoComfort residential models use 1” double o-ring ttings. GeoComfort commercial, Hydron Module & TETCO models use 1” FPT ttings All models use 1” FPT ttings for load water loop connection.

All Desuperheater connections are 3/4” FPT. All measurements are in inches.

32.20

SIDE

AIR COIL

14.00

10.73

Supply Air

(Bottom Discharge)

30.33

28.01

13.005.31

Bottom View

Bottom Discharge

Return Air

Width

(E)

32.20

SIDE

AIR COIL

Height

(D)

Enertech Global CT Models, Rev.: A

Section 4: Unit Physical Data

Dual Capacity Vertical

Model Number 024 036 048 060 072

Fan Wheel (in.) 10 x 11 10 x 11 10 x 11 10 x 11 10 x 11

Fan Motor ECM

.5 .5 .75 1 1

(HP)

Refrigerant Charge (oz.) 62 59 74 84 92

Air Coil

Face Area (Sq.Ft.) 5.55 5.55 5.55 6.17 6.17

Dimensions (in.) 31.8 x 25.1 x 1.0 35.9 x 24.7 x 1.26

Number Of Rows N/A - Micro-Channel

28 x 30

28 x 34

Filter 1” Thick

x 1

Unit Weight (nominal) - lbs 415 420 435 535 550

CT Models, Rev.: A Enertech Global

Section 4: Unit Conversion

Figure 1: Unit Conversion

To convert the unit to right hand return air:

1. Remove the front panels and rear panels. The panel screws are located under the band that runs across the middle of the unit.

(GeoComfort & Hydron Module units only)

2. Rotate the unit to the correct position.

3. Move the unit controls connection plate from its current position (on the top of the unit) to the opposite side of the top of the unit. Use the block off plate from that side to cover the other side.

4. Mount the control box on what is now the top front of the unit. Plugs are available now to facilitate this.

5. Replace the front and rear panels onto the unit.

The source, hot water generator, and

condensate ttings are on the air coil side

of the unit, under the air coil itself. These connections are easier to facilitate if done prior

to the tting of the return air drop.

UNIT CONVERSION:

Units are shipped in the left hand

return air, upow conguration. The

control box is shipped inside the unit. The control box plugs into the electrical connection plate on the top of the unit and mounts with two screws to the top of the unit.

To convert the unit to downow supply air:

1. Remove the screws holding the blower and heater housing and drop the assembly down.

2. Remove the block off plate from the area under the blower housing on the bottom blower section panel.

3. Place the block off plate over the opening where the blower housing was.

4. Install the downow duct kit (instruction

included with kit, which is ordered and shipped separately) in the compressor section of the unit.

5. Install the heater and blower housing

assembly onto the downow opening in the

blower section securing it with the screws removed in step 1.

Figure 2: Blower Housing Connections

NOTE: Do not pry on the "belly band" that runs across the front of the unit to hide the access panel screws. Slight pressure on the rounded portion of the "belly band" will release the catch.

(GeoComfort & Hydron Module units only)

Enertech Global CT Models, Rev.: A

Section 4: Ductwork Installation

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 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

run over 500 CFM. If the unit is installed in a unconditioned space the metal ductwork

should be insulated on the inside with berglass

insulation or similar insulation to prevent heat loss/gain 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

CT Models, Rev.: A Enertech Global

Section 4: Ductwork Installation

Figure 3: Standard Ductwork Connection Setup

Return Air Grille

Flex Connector

Return Air

Heat Pump

Never install a takeoff on or near a reducer or on an end cap, or near an end cap. Exceptions may apply

Accessible Filter/Rack

Supply Air

Flex Connector

Reducer

Supply Air Grille

Takeoff runs should never be installed on a reducer. Takeoffs should be installed 6" before a reducer and at least 24" to 36" past any reducer.

The geothermal unit comes with an ECM Motor. For maximum performance, the blower speed should be set to maintain between 350 and 450 CFM/ton. Use DIP switch for ECM motor adjustments.

Figure 4: Ductwork with Split Damper Connection Setup

Thermostat No. 2

Never install a takeoff on or near a reducer or on an end cap, or near a end cap. Exceptions may apply.

Thermostat No. 1

Return Air

Flex Connector

Bypass damper not shown

Split Damper

NOTE: Maintain duct

size of supply ange

for at least 12”

before transitioning

to size of supply

plenum designed

for duct system.

Reducer

Damper Motor

Shift Damper

Supply Air

Flex Connector

Takeoff runs should never be installed on a reducer. Takeoffs should be installed 6" before a reducer and at least 24" to 36" past any reducer.

Supply Air Grille

Enertech Global CT Models, Rev.: A

Accessible Filter/Rack

Note: A bypass damper is almost always required for zoning systems.

Section 5: Unit Piping Installation

Open Loop Piping

Placement of the components for an open loop system are important when considering water quality and long term maintenance. The water solenoid valve should always be placed on the outlet of the heat pump, which will keep the heat exchanger under pressure when the unit is not operating. If the heat exchanger is under pressure, minerals will stay in suspension. Water solenoid valves are also designed to close against the pressure, not with the pressure. Otherwise, they tend to be noisy when closing.

A ow regulator should be placed after the

water solenoid valve. Always check the product

specication catalog for proper ow rate. A

calculation must be made to determine the

ow rate, so that the leaving water temperature

does not have the possibility of freezing.

Other necessary components include a strainer,

boiler drains for heat exchanger ushing, P/T

ports and ball valves. Ball valves allow the water to be shut off for service, and also help when velocity noise is noticeable through the

ow regulator. Spreading some of the pressure

drop across the ball valves will lessen the

velocity noise. Always double check ow rate

at the P/T ports to make sure the ball valve

adjustments have not lowered water ow too much, and essentially taken the ow regulator

out of the equation. It’s a good idea to remove the ball valve handles once the system is completed to avoid nuisance service calls.

Hose kits are optional, but make for an easier installation, since the P/T ports and connections are included. The hose also helps to isolate the heat pump from the piping system.

Since the heat pump can operate at lower

waterow on rst stage, two stage units

typically include two water solenoid valves

to save water. The ow regulators should be

sized so that when one valve is open the unit

operates at rst stage ow rate, and when

both valves are open, the unit operates at

full load ow rate. For example, a 4 ton unit needs approximately 4 GPM on rst stage, and approximately 7 GPM at full load. The ow regulator after the rst valve should be 4 GPM, and the ow regulator after the second valve

should be 3 GPM. When both valves are open, the unit will operate at 7 GPM.

Figure 5: Open Loop Piping Example

P/T Port

Strainer

Water

Solenoid

Valve

Optional

Hose Kit*

HEAT PUMP

OUT

Boiler Drain

Exchanger

Maintenance

(2 required)

for Heat

*Hose kit is used for piping

isolation, and includes fittings for P/T ports.

**See product specification catalog for flow rates.

Single Speed

Units

Ball Valve

(2 required)

From Well

Flow Regulator**

Discharge Line

Two-

Stage

Units

Note: All GCT/HCT/TCT units are two-stage units.

Not recommended for 3 ton and smaller. Use single solenoid and

ow regulator.

CT Models, Rev.: A Enertech Global

Section 5: Unit Piping Installation

Water Quality

The quality of the water used in geothermal systems is very important. In closed loop systems the dilution water (water mixed with antifreeze) must be of high quality to ensure adequate corrosion protection. Water of poor quality

contains ions that make the uid “hard” and

corrosive. Calcium and magnesium hardness ions build up as scale on the walls of the system and reduce heat transfer. These ions may also react with the corrosion inhibitors in glycol based

heat transfer uids, causing them to precipitate

out of solution and rendering the inhibitors ineffective in protecting against corrosion. In addition, high concentrations of corrosive ions, such as chloride and sulfate, will eat through any protective layer that the corrosion inhibitors form on the walls of the system.

Ideally, de-ionized water should be used for dilution with antifreeze solutions since de-

ionizing removes both corrosive and hardness ions. Distilled water and zeolite softened water are also acceptable. Softened water, although free of hardness ions, may actually have increased concentrations of corrosive ions and, therefore, its quality must be monitored. It is recommended that dilution water contain less than 100 PPM calcium carbonate or less than 25 PPM calcium plus magnesium ions; and less than 25 PPM chloride or sulfate ions.

In an open loop system the water quality is of no less importance. Due to the inherent variation of the supply water, it should be tested prior to making the decision to use an open loop system. Scaling of the heat exchanger and corrosion of the internal parts are two of the potential problems. The Department of Natural Resources or your local municipality can direct you to the proper testing agency. Please see Table 2 for guidelines.

Table 2: Water Quality

Potential Problem

Scaling Calcium & Magnesium Cabonate Less than 350 ppm Less than 350 ppm

Corrosion

Biological

Growth

Erosion

Notes:

1. Harness in ppm is equivalent to hardness in mg/l.

2. Grains/gallon = ppm divided by 17.1.

3. Copper and cupro-nickel heat exchangers are not recommended for pool applications for water outside the range of the table. Secondary heat exchangers are required for applications not meeting the requirements shown above.

4. Saltwater applications (approx. 25,000 ppm) require secondary heat exchangers due to copper piping between the heat exchanger

and the unit ttings.

Ammonium Chloride, Ammonium Nitrate Less than 0.5 ppm Less than 0.5 ppm

Chemical(s) or Condition

pH Range 7 - 9 5 - 9

Total Disolved Solids Less than 1000 ppm Less than 1500 ppm

Ammonia, Ammonium Hydroxide Less than 0.5 ppm Less than 0.5 ppm

Calcium Chloride / Sodium Chloride Less than 125 ppm Less than 125 ppm - Note 4

Chlorine Less than 0.5 ppm Less than 0.5 ppm

Hydrogen Sulde None Allowed None Allowed

Iron Bacteria None Allowed None Allowed

Iron Oxide Less than 1 ppm Less than 1 ppm

Suspended Solids Less than 10 ppm Less than 10 ppm

Water Velocity Less than 8 ft/s Less than 12 ft/s

Range for Copper

Heat Exchangers

Range for Cupro-Nickel Heat

Exchangers

Enertech Global CT Models, Rev.: A

Section 5: Unit Piping Installation

Interior Piping

All interior piping must be sized for proper ow

rates and pressure loss. Insulation should be used on all inside piping when minimum loop temperatures are expected to be less than 50°F. Use the table below for insulation sizes with different pipe sizes. All pipe insulation should be a closed cell and have a minimum wall thickness of 3/8”. All piping insulation should be glued and sealed to prevent condensation and dripping. Interior piping may consist of the following materials: HDPE, copper, brass, or rubber hose (hose kit only). PVC is not allowed

on pressurized systems.

Table 3: Pipe Insulation

Piping Material Insulation Description

1” IPS Hose 1-3/8” ID - 3/8” Wall

1” IPS PE 1-1/4” ID - 3/8” Wall

1-1/4” IPS PE 1-5/8” ID - 3/8” Wall

2” IPS PD 2-1/8” ID - 3/8” Wall

Figure 6: Typical Single Unit Piping Connection (Pressurized Flow Center)

Typical Pressurized Flow Center Installation

The ow centers are insulated and contain all ushing and circulation connections for

residential and light commercial earth loops

that require a ow rate of no more than 20 gpm. 1-1/4” fusion x 1” double o-ring ttings

(AGA6PES) are furnished with the double

o-ring ow centers for HDPE loop constructions. Various ttings are available for the double o-ring ow centers for different connections. See gure 6 for connection options. A typical

installation will require the use of a hose kit. Matching hose kits come with double o-ring adapters to transition to 1” hose connection.

Note: Threaded ow centers all have 1” FPT connections. Matching hose kits come with the AGBA55 adapter needed to transition from 1” FPT to 1” hose.

Load Side Hydronic Buffer or Storage Tanks

Virtually all water-to-water heat pumps used for hydronic applications require a buffer tank to prevent equipment short cycling, and to

allow lower ow rates through the water-to-

water unit than through the hydronic delivery system. The following are considerations for buffer tank sizing.

Flow

Center

To/From

Loop Field

Air Coil

Hose

Kit

P/T Ports

Equipment Pad

2” Polyethylene Foam

Source Water Out

Source Water In

Note: P/T ports should be angled away from the unit for ease of gauge reading.

• The size of the buffer tank should be determined based upon the predominant use of the water-to-water equipment (heating or cooling).

• The size of the buffer tank is based upon the lowest operating stage of the equipment. For example, a water-to-water heat pump with a two-stage compressor or two compressors may be sized for rst stage capacity, reducing the size of the tank (two-stage aquastat required).

• Pressurized buffer tanks are sized differently than non-pressurized tanks (see guidelines listed below).

CT Models, Rev.: A Enertech Global

Section 5: Unit Piping Installation

Typical Non-Pressurized Flow Center Installation

Standing column ow centers are designed to

operate with no static pressure on the earth loop. The design is such that the column of

water in the ow center is enough pressure to

prime the pumps for proper system operation

and pump reliability. The ow center does have

a cap/seal, so it is still a closed system, where the

uid will not evaporate. If the earth loop header

is external, the loop system will still need to be

ushed with a purge cart. The non-pressurized ow center needs to be isolated from the ush cart during ushing because the ow center

is not designed to handle pressure. Since this is a non-pressurized system, the interior piping can incorporate all the above-mentioned pipe material options (see interior piping), including

PVC. The ow center can be mounted to the

wall with the included bracket or mounted on

the oor as long as it is properly supported.

Figure 7: Typical Single Unit Piping Connection (Non-Pressurized Flow Center)

Figure 8: Typical Single Combination Unit Piping Connection







 





Enertech Global CT Models, Rev.: A

 









 







  

 

  

   



 

   



   







  

 

  

  

    

 



Section 5: Unit Piping Installation

⚠ NOTICE ⚠

THIS UNIT FEATURES A BRAZED-PLATE

HEAT EXCHANGER FOR HYDRONIC

HEATING. TO PREVENT POTENTIAL

EQUIPMENT DAMAGE, A WATER STRAINER

IS PROVIDED AND MUST BE INSTALLED IN

THE WATER INLET CIRCUIT TO PROTECT THE HEAT EXCHANGER FROM PARTIAL

OR COMPLETE BLOCKAGE. IF ANOTHER STRAINER IS USED, IT SHOULD FEATURE A 16-20 MESH MINIMUM, 20-40 MESH IS A

BETTER CHOICE.

Figure 9b: Condensation Drain Drop

Condensation Drain Connection

Connect the EZ-Trap to the equipment condensate drain drain connection as shown

in gures 9a through 9d. The condensate line

must be trapped a minimum of 1.0” as shown on diagram. The condensate line should be pitched away from the unit a minimum of 1/4” per foot. The condensate line from the unit drain connection to the P-trap should be sloped downward. For moreinformation on installing EZ-Trap, see installationsheet that comes with the EZ-Trap Kit. Always install the air vent after the trap.

Figure 9a: Condensation Drain Connection

Note: Make Sure the condensate overow

sensor is mounted to the side closest to the

drain being used as shown in gures 9c and 9d

below.

Figure 9c: Left Overow Sensor Connection

Figure 9d: Right Overow Sensor Connection

Note: Connect the drain through the trap to the condensation drain system in conformance to local plumbing codes.

Part Number Description ACDT1A EZ-Trap ¾” Kit ACDT2A EZ-Trap 1” Kit

CT Models, Rev.: A Enertech Global

Section 6: Antifreeze

Antifreeze Overview

In areas where minimum entering loop temperatures drop below 40°F, or where piping will be routed through areas subject to freezing, antifreeze is required. Alcohols and glycols are commonly used as antifreeze. However, local and state/provincial codes supersede any instructions in this document. The system needs antifreeze to protect the coaxial heat exchanger from freezing and rupturing. Freeze protection should be maintained to 15°F below the lowest expected entering source loop temperature. For example, if 30°F is the minimum expected entering source loop temperature, the leaving loop temperature could be 22 to 25°F. Freeze protection should be set at 15°F (30-15 = 15°F). To determine antifreeze requirements, calculate how much volume the system holds. Then, calculate how much antifreeze will be needed by determining the percentage of antifreeze required for proper freeze protection. See Tables 4 and 5 for volumes and percentages. The freeze protection should be checked during installation using the proper hydrometer

to measure the specic gravity and freeze

protection level of the solution.

Antifreeze Characteristics

Selection of the antifreeze solution for closed loop systems require the consideration of many important factors, which have long-term implications on the performance and life of the equipment. Each area of concern leads to

a different “best choice” of antifreeze. There

is no “perfect” antifreeze. Some of the factors to consider are as follows (Brine = antifreeze solution including water):

Safety: The toxicity and ammability of the brine

(especially in a pure form).

Cost: Prices vary widely.

Convenience: Is the antifreeze available and

easy to transport and install?

Codes: Will the brine meet local and state/ provincial codes?

The following are some general observations about the types of brines presently being used:

Methanol: Wood grain alcohol that is considered toxic in pure form. It has good heat transfer, low viscosity, is non-corrosive, and is mid to low price. The biggest down side is that it is

ammable in concentrations greater than 25%.

Ethanol: Grain alcohol, which by the ATF (Alcohol, Tobacco, Firearms) department of the U.S. government, is required to be

denatured and rendered unt to drink. It has

good heat transfer, mid to high price, is noncorrosive, non-toxic even in its pure form, and

has medium viscosity. It also is ammable with

concentrations greater than 25%. Note that the brand of ethanol is very important. Make sure it has been formulated for the geothermal industry. Some of the denaturants are not compatible with HDPE pipe (for example, solutions denatured with gasoline).

Propylene Glycol: Non-toxic, non-corrosive, mid to high price, poor heat transfer, high viscosity when cold, and can introduce micro air bubbles when adding to the system. It

has also been known to form a “slime-type”

coating inside the pipe. Food grade glycol is recommended because some of the other types have certain inhibitors that react poorly with geothermal systems. A 25% brine solution is a minimum required by glycol manufacturers, so that bacteria does not start to form.

Ethylene Glycol: Considered toxic and is not recommended for use in earth loop applications.

Thermal Performance: The heat transfer and viscosity effect of the brine.

Corrosiveness: The brine must be compatible with the system materials.

Stability: Will the brine require periodic change out or maintenance?

Enertech Global CT Models, Rev.: A

GS4 (POTASSIUM ACETATE): Considered highly corrosive (especially if air is present in the system) and has a very low surface tension, which causes leaks through most mechanical

ttings. This brine is not recommended for use in

earth loop applications.

Section 6: Antifreeze

Notes:

1. Consult with your representative or distributor if you have any questions regarding antifreeze selection or use.

2. All antifreeze suppliers and manufacturers recommend the use of either de-ionized or distilled water with their products.

Antifreeze Charging

Calculate the total amount of pipe in the system and use Table 4 to calculate the

amount of volume for each specic section of

the system. Add the entire volume together, and multiply that volume by the proper antifreeze percentage needed (Table 5) for the freeze protection required in your area. Then, double check calculations during installation

with the proper hydrometer and specic gravity

chart (Figure 10) to determine if the correct amount of antifreeze was added.

Table 4: Pipe Fluid Volume

Type Size

Copper 1” CTS 4.1

Copper 1.25” CTS 6.4

Copper 1.5” CTS 9.2

HDPE .75” SDR11 3.0

HDPE 1” SDR11 4.7

HDPE 1.25” SDR11 7.5

HDPE 1.5” SDR11 9.8

HDPE 2” SDR11 15.4

Additional component volumes: Unit coaxial heat exchanger = 1 Gallon Flush Cart = 8-10 Gallons

10’ of 1” Rubber Hose = 0.4 Gallons

Volume Per 100ft

US Gallons

⚠ CAUTION ⚠

USE EXTREME CARE WHEN OPENING, POURING, AND MIXING FLAMMABLE

ANTIFREEZE SOLUTIONS. REMOTE FLAMES

OR ELECTRICAL SPARKS CAN IGNITE

UNDILUTED ANTIFREEZES AND VAPORS.

USE ONLY IN A WELL VENTILATED AREA.

DO NOT SMOKE WHEN HANDLING

FLAMMABLE SOLUTIONS. FAILURE TO

OBSERVE SAFETY PRECAUTIONS MAY

RESULT IN FIRE, INJURY, OR DEATH. NEVER

WORK WITH 100% ALCOHOL SOLUTIONS.

CT Models, Rev.: A Enertech Global

Section 6: Antifreeze

Table 5: Antifreeze Percentages by Volume

Type of Antifreeze

10°F (-12.2°C) 15°F (-9.4°C) 20°F (-6.7°C) 25°F (-3.9°C)

Minimum Temperature for Freeze Protection

ProCool (Ethanol) 25% 22% 17% 12%

Methanol 25% 21% 16% 10%

Propylene Glycol 38% 30% 22% 15%

Heat Transfer Fluid (HTF) Mix according to manufacturer’s directions on container label

Antifreeze solutions are shown in pure form - not premixed HTF is a premixed Methanol solution

NOTE: Most manufacturers of antifreeze solutions recommend the use of de-ionized water. Tap water may include chemicals that could react with the antifreeze solution.

Figure 10: Antifreeze Specic Gravity

1.0500

1.0400

1.0300

1.0200

1.0100

1.0000

Specific Gravity

0.9900

0.9800

0.9700

0.9600

-5 0 5 10 15 20 25 30 32

Freeze Protection (deg F)

Procool Methanol Propylene Glycol

Enertech Global CT Models, Rev.: A

Section 7: Desuperheater Installation

Desuperheater Installation

Units that ship with the desuperheater function also ship with a connection kit.

Note: Desuperheater capacity is based on 0.4 GPM Flow per nominal ton at 90°F entering hot water temperature.

Note: Units that are shipped with a desuperheater do not have the desuperheater pump wires connected to the electrical circuit, to prevent accidentally running the pump while dry. Pump has to be connected to the electric circuit (master contactor) when the lines from the water heater are installed & air is removed.

CONTENTS OF THE DESUPERHEATER FITTING KIT:

• (1) p/n 20D052-01NN, Installation Instruc-

tions

• (1) p/n 33P211-01BN, 3/4”x 3/4”x 3/4” FPT

Brass Tee

• (1) p/n 33P210-01NN, ¾” Boiler

Drain Valve

• (1) p/n 11080005001, ¾” MPT x 3-1/2”

Brass Nipple

• (3) p/n 11080006001, ½” SWT x ¾” MPT

Copper Adaptor

• (1) p/n 11080007001, ¾” x ¾” x ½” SWT

Copper Tee

PLUMBING INSTALLATION

NOTE: All plumbing and piping connections must comply with local plumbing codes.

TIP: Measure the distance above the oor or

shelf that the water heater is setting on, to where the drain valve is located. This distance must be greater than one-half the width of the tee you’re about to install, or you won’t be able to thread the tee on to the water heater.

1. Disconnect electricity to water heater.

2. Turn off water supply to water heater.

3. Drain water heater. Open pressure relief valve.

4. Remove drain valve and tting from water

heater.

5. Thread the ¾” MPT x 3-1/2” nipple into the

water heater drain port. Use Teon tape, or

pipe dope on threads.

6. Thread the center port of the ¾” brass tee to the other end of the nipple.

7. Thread one of the copper adaptors into the end of the tee closest to the heat pump.

8. Thread the drain valve into the other end of the nipple. See Figure 1.

9. Above the water heater, cut the incoming cold water line. Remove a section of that line to enable the placement of the copper tee.

⚠ WARNING ⚠

TO AVOID SERIOUS INJURY, IT IS

RECOMMENDED THAT AN ANTI-SCALD

MIXING VALVE IS INSTALLED ON THE HOT WATER SUPPLY LINE INTO THE HOME. EVEN THOUGH HOT WATER TANK TEMPERATURES

COULD APPEAR TO BE SET AT LOWER

LEVELS, HIGH TEMPERATURE WATER FROM

THE DESUPERHEATER COULD RAISE TANK

TEMPERATURES TO UNSAFE LEVELS.

CT Models, Rev.: A Enertech Global

10. Insert the copper tee in the cold water line. See Figure 2.

11. Thread the remaining two ½”SWT x ¾”MPT

copper adaptors into the ¾” FPT ttings on

the heat pump, marked HWG IN and HWG OUT.

12. Run interconnecting ½” copper pipe from the HOT WATER OUT on the heat pump, to the copper adaptor located on the tee at the bottom of the water heater.

13. Run interconnecting ½” copper pipe from the HOT WATER IN on the heat pump, to the copper tee in the cold water line.

Section 7: Desuperheater Installation

14. Install an air vent tting at the highest point

of the line from step 13 (assuming it’s the higher of the two lines from the heat pump to the water heater).

15. Shut off the valve installed in the desuperheater line close to the tee in the cold water line. Open the air vent and all

shut off valves installed in the “hot water

hot”.

16. Turn the water supply to the water heater on. Fill water heater. Open highest hot water faucet to purge air from tank and piping.

17. Flush the interconnecting lines, and check for leaks. Make sure air vent is shoutoff when water begins to drip steadily from the vent.

Figure 11: Water Heater Connection Kit Assembly for Bottom of Water Heater

18. Loosen the screw on the end of the despuerheater pump to purge the air from the pump’s rotor housing. A steady drip of water will indicate the air is removed. Tighten the screw and the pump can be connected to the contactor or teminal block.

19. Install 3/8” closed cell insulation on the lines connecting the heat pump to the water heater.

20. Reconnect electricity to water heater.

NOTE: Drawing shown vertically for detail. Fitting installs horizontally into hot water tank.

Connection to Hot Water Tank

Drain

Copper Tee For Domestic Cold Water In Line

Brass Tee

Adapter to Unit Water Line

Enertech Global CT Models, Rev.: A

Section 7: Desuperheater Installation

Hot Water Out

Hot Water In

Hot Water Out

Hot Water In

Figure 12: Typical Desuperheater Installation

Cold Water

Hot Water

Supply

Water Heater (or Storage Tank)

Shutoff Valves

Air Vent Located at System High Point

Air Coil

Unit Water

Connection Detail

3/4” Copper Adapter Fitting

Shutoff

Drain Valve

Valves

HWG Out

HWG In

Figure 13: Desuperheater Installation with Preheat Tank

Cold Water

Hot Water

Water Heater No. 2

(or Storage Tank)

Cold Water Supply

Hot Water

Water Heater No. 1

Supply

(or Storage Tank)

Shutoff Valves

Air Vent Located at System High Point

Unit Water

Connection Detail

Air Coil

Drain Valve

CT Models, Rev.: A Enertech Global

Drain Valve

Shutoff Valves

3/4” Copper Adapter Fitting

HWG Out

HWG In

Section 8: Controls

MICROPROCESSOR FEATURES AND OPERATION

Enertech Global geothermal heat pump controls provide a unique modular approach for controlling heat pump operation. The control system uses one, two, or three printed circuit boards, depending upon the features

of a particular unit. This approach simplies

installation and troubleshooting, and eliminates features that are not applicable for some units.

A microprocessor-based printed circuit board controls the inputs to the unit as well as outputs for status mode, faults, and diagnostics. A status LED and an LED for each fault is provided for diagnostics. An ECM control module

provides eld selectable options for airow and dehumidication mode, plus an LED to indicate CFM (100 CFM per ash). If the combination

unit is desired (combination water-to-air and water-to-water heat pump), a third board controls the hydronic portion of the unit,

allowing eld selectable hot water/forced air

priority and other options.

Removable low voltage terminal strips provide all

necessary terminals for eld connections. Not only

are the thermostat inputs included, but there are also two additional removable terminal strips for all of the accessory and electric heat wiring for ease of installation and troubleshooting.

Startup/Random Start

The unit will not operate until all the inputs and safety controls are checked for normal

conditions. At rst power-up, the compressor is energized after a ve minute delay. In addition,

a zero to sixty second random start delay is

added at rst power-up to avoid multiple units

from being energized at the same time.

Short Cycle Protection A built-in ve minute anti-short cycle timer provides short cycle protection of the compressor.

Component Sequencing Delays

Components are sequenced and delayed for optimum space conditioning performance and to make any startup noise less noticeable.

Test Mode The microprocessor control allows the technician to shorten most timing delays for faster diagnostics by changing the position of a jumper located on the lockout board.

Water Solenoid Valve Connections

Two accessory relay outputs at the terminal

strip provide a eld connection for two types

of water solenoid valves, a standard 24VAC solenoid valve, or a 24VAC solenoid valve

with an end switch. Additional eld wiring is no

longer required for operation of the end switch.

Humidier/Dehumidication Connections

Connections for a humidistat are provided, which automatically engages the fan when the humidistat contact closes. In addition, a

eld connection is provided at the terminal

strip for external control of the On Demand

Dehumidication (ODD) feature for the variable

speed ECM motor, which automatically lowers the fan speed when the space humidity is higher than set point. Either connection may be

used with a thermostat that includes humidier/ dehumidication outputs. Not applicable for

splits/water-to-water.

Airow Monitor

An LED on the ECM control module ashes

one time per 100 CFM when the unit’s fan is

operating to indicate airow.

Resistance Heat Control

The electric heat control module contains the appropriate high-voltage control relays. Low voltage control signals from the compressor section energize the relays in the electric heat module to engage backup electric heat when necessary.

Electronic Condensate Overow Protection

The control board utilizes an impedance sensing liquid sensor at the top of the drain pan. Since the drain pan is grounded, when water touches the sensor for 30 continuous seconds, the sensor sends a ground signal to the lockout

board, indicating that a condensate overow

fault has occurred.

Enertech Global CT Models, Rev.: A

Section 8: Controls

Figure 14: ECM Board Layout

COM2

XFMR

SEC

CFM

COM

24VAC

O/B Y1 G W1 R ODD W2 Y2 C

ECM

Board

Loop Pump Circuit Breakers

The loop pump(s) and desuperheater pump are protected by control box mounted circuit breakers for easy wiring of pumps during installation. Circuit breakers eliminate the need to replace fuses.

Safety Controls The control receives separate signals for

high pressure, low pressure, low water ow, and condensate overow faults. Upon a

continuous 30-second measurement of the fault (immediate for high pressure), compressor operation is suspended (see Fault Retry below),

and the appropriate LED ashes. Once the unit

is locked out (see Fault Retry below), an output

(terminal “L”) is made available to a fault LED

at the thermostat (water-to-water unit has fault LED on the corner post).

Low Pressure: If the low pressure switch is open for 30 continuous seconds, the compressor operation will be interrupted, and the control will go into fault retry mode. At startup, the low pressure switch is not monitored for 90 seconds to avoid nuisance faults.

High Pressure: If the high pressure switch opens, the compressor operation will be interrupted, and the control will go into fault retry mode. There is no delay from the time the switch opens and the board goes into fault retry mode. There is also no delay of switch monitoring at startup.

Flow Switch: If the ow switch is open for 30

continuous seconds, the compressor operation will be interrupted, and the control will go into

fault retry mode. At startup, the ow switch

is not monitored for 30 seconds to avoid nuisance faults.

Condensate Overow: If water touches the

condensate overow sensor for 30 continuous

seconds, the compressor operation will be interrupted, and the control will go into fault retry mode. There is no delay of switch monitoring at startup.

FAULT RETRY

All faults are retried twice before nally locking

the unit out. The fault retry feature is designed to prevent nuisance service calls. There is an antishort cycle period between fault retries. On the third fault, the board will go into lockout mode.

Over/Under Voltage Shutdown

The lockout board protects the compressor from operating when an over/under voltage condition exists. The control monitors secondary voltage (24VAC) to determine if an over/ under voltage condition is occurring on the primary side of the transformer. For example, if the secondary voltage is 19 VAC, the primary voltage for a 240V unit would be approximately 190V, which is below the minimum voltage (197V) recommended by the compressor manufacturer. This feature is self-resetting. If the voltage comes back within range, normal operation is restored. Therefore, over/under voltage is not a lockout.

Under voltage (18 VAC) causes the compressor to disengage and restart when the voltage returns to 20 VAC. Over voltage (31 VAC) causes the compressor to disengage and restart when the voltage returns to 29 VAC. During an over or under voltage condition,

all ve fault LEDs will blink (HP + LP + FS + CO + Status). When voltage returns to normal

operation, the four fault LED’s will stop blinking,

but the status LED will continue to ash. While the board LEDs are ashing, the thermostat

fault light will be illuminated.

Intelligent Reset If the thermostat is powered off and back on (soft reset), the board will reset, but the last fault will be stored in memory for ease of troubleshooting. If power is interrupted to the board, the fault memory will be cleared.

CT Models, Rev.: A Enertech Global

Section 8: Controls

Lockout with Emergency Heat

While in lockout mode, if the thermostat is calling for backup heat, emergency heat mode will occur.

Hot Water Pump Control

Controls for high water temperature prevent the hot water (desuperheater) pump from operating when the leaving water temperature is above 130°F.

Lockout Board Jumper Selection

The lockout board includes three jumpers for

eld selection of various board features.

Water Solenoid Valve Delay (WSD): When

the WSD jumper is installed, the “A” terminal is

energized with the compressor contactor. If

the WSD jumper is removed, the “A” terminal is energized when the “Y” terminal is energized at

the lockout board. The compressor contactor is energized 10 seconds after the solenoid.

This allows water ow to be established for 10

seconds before starting the compressor. The

“A” terminal can be connected to the fast

opening valve types without an end switch. All other solenoids with an end switch should

use the “YT” and “YU” terminals with the WSD

jumper in place.

voltage condition could cause premature component failure or damage to the unit controls. Any condition that would cause this fault must be thoroughly investigated before taking any action regarding the jumper removal. Likely causes of an over/under voltage condition include power company

transformer selection, insufcient entrance

wire sizing, defective breaker panel, incorrect transformer tap (unit control box), or other power-related issues.

Diagnostics

The lockout board includes ve LEDs (status, high pressure, low pressure, low water ow, condensate overow) for fast and simple

control board diagnosis. Below is a table showing LED function.

Test Mode (TEST): When the TEST jumper is installed, the board operates in the normal mode. When the jumper is removed, the board operates in test mode, which speeds up all delays for easier troubleshooting. When service is complete, the jumper must be re-installed in order to make sure that the unit operates with normal sequencing delays. While the test jumper is removed, the status (bottom green) light will remain off.

Over/Under Voltage Disable (O/V): When the O/V jumper is installed, the over/under voltage feature is active. When the jumper is removed, the over/under voltage feature is disabled. On rare occasions, variations in voltage will be outside the range of the over/under voltage feature, which may require removal of the jumper. However, removal of the jumper could cause the unit to run under adverse conditions, and therefore should not be removed without contacting technical services. An over/under

Enertech Global CT Models, Rev.: A

Section 8: Controls

Figure 15: Lockout Board Layout

CCG

R2 R1 C2 C1

A C

R Y

WSD TEST

O/V

Lockout

Board

HP HP LP LP FS FS CO CO

Status

Table 6: LED Identication

LED Color Location

Green Top High Pressure OFF Flashing

Orange 2nd Low Pressure OFF Flashing

Red 3rd Water Flow OFF Flashing

Yellow 4th

Green Bottom Status Flashing

Notes:

1. Looking at the board when the LEDs are on the right hand side.

2. If all ve lights are ashing, the fault is over/under voltage.

3. Only the light associated with the particular fault/lockout will be on or ashing.

For example, if a high pressure lockout has occurred, the top green light will be on. The orange, red, and yellow lights will be off.

4. Status lights will be off when in test mode.

5. Flashes alternately with the fault LED.

CT Models, Rev.: A Enertech Global

Function

Condensate

Overow

Normal

Operation

OFF Flashing

Fault Retry

Flashing

Lockout

Flashing

ON ON ON

Section 8: Controls

Table 7: ECM Fan Performance - Two-Stage Compressor Units

ECM Fan Performance - Two-Stage Compressor Units

Model1Program

A 800 1000 800 1000 680 850 550 ON OFF ON OFF ON OFF OFF OFF

024

036

048

060

072

B 750 950 750 950 640 810 515 ON OFF OFF OFF ON OFF OFF OFF

C 700 850 700 850 595 725 475 ON OFF OFF ON ON OFF OFF OFF

D 600 750 600 750 510 640 450 OFF ON OFF OFF OFF ON OFF OFF

A - - - - - - - - - - - - - - -

B 1050 1350 1050 1350 895 1150 700 OFF OFF ON OFF OFF OFF OFF OFF

C 950 1200 950 1250 810 1065 635 OFF OFF OFF OFF OFF OFF OFF OFF

D 850 1100 850 1150 725 980 575 OFF OFF OFF ON OFF OFF OFF OFF

A 1500 1800 1500 1900 1275 1615 945 ON OFF ON OFF ON OFF OFF OFF

B 1450 1700 1450 1750 1235 1490 890 OFF ON ON OFF OFF ON OFF OFF

C 1300 1500 1300 1600 1105 1360 680 OFF ON OFF OFF OFF ON OFF OFF

D 1150 1350 1150 1400 725 OFF ON OFF ON OFF ON OFF OFF

A 1850 2200 1750 2100 1490 1785 980 OFF OFF ON OFF OFF OFF OFF OFF

B 1600 1850 1650 1950 1405 1660 870 ON OFF ON OFF ON OFF OFF OFF

C 1450 1700 1450 1750 1235 1490 800 ON OFF OFF OFF ON OFF OFF OFF

D 1300 1500 1300 1550 725 ON OFF OFF ON ON OFF OFF OFF

A - - - - - - - - - - - - - - -

B 1850 2100 1750 2150 1490 1830 1075 OFF OFF ON OFF OFF OFF OFF OFF

C 1650 2000 1600 1900 975 OFF OFF OFF OFF OFF OFF OFF OFF

D 1500 1750 1450 1700 875 OFF OFF OFF ON OFF OFF OFF OFF

Heating Modes Cooling Modes

1st

2nd

Stage

1st

Stage

2nd

Stage

Dehumidication

Stage

1st

Mode

2nd

Stage

Only

Fan

S1 S2 S3 S4 S5 S6 S7 S8

DIP Switch Settings

Notes:

1. Program B (Bold type) is factory settings and rated CFM. CFM is controlled within 5% up to the max. ESP.

Max. ESP includes allowance for wet coil and standard lter.

2. Power must be off to the unit for at least 3 seconds before the ECM motor will recognize a speed change.

3. Max ESP for models with internal electric heat is 0.6” ESP.

Dehumidication Mode Options

DIP Switch

S9 S10

ON OFF Normal Dehumidication mode disabled (normal Htg/Clg CFM) - factory setting

OFF ON ODD

OFF OFF Constant Dehum

ON ON Not Used Not an applicable selection

Notes:

1. To enter dehumidication mode, ODD input should be 0 VAC; for normal cooling CFM, ODD input should be 24VAC.

2. Heating CFM is not affected by dehumidication mode. When in dehumidication mode, cooling CFM is 85% of normal

cooling CFM.

Mode Operation

On Demand dehumidication mode (humidistat input at terminal ODD) -

Humidistat required

Constant dehumidication mode (always uses dehum CFM for cooling

and normal CFM for heating) - No humidistat required

Enertech Global CT Models, Rev.: A

Section 8: Combination Unit Controls

COMBINATION UNIT CONTROLS

The hot water (combination unit) control board prioritizes unit operation even when there are simultaneous calls from the thermostat and aquastat. Inputs to the board include thermostat signals as well as an aqua-stat input. The hot water board

acts as a “trafc director,” since all inputs are sent to the hot water board rst. Then, based upon priority

selection, signals are directed to the lockout board, hot water mode outputs (pump relay, direction valve, 3-way valve), and/or the ECM control board. If there is a simultaneous heating and hot water call, by default, hot water will take priority in the default dip switch setting. Hot water priority DIP switches will allow the choice of four priority modes (see below).

In default (hot water) mode, any time there is an input from the aqua-stat, water heating is priority. If there is a call from the thermostat for reversing valve

(“O”), the call will be ignored until the hot water call has been satised. If there is a simultaneous call for hot water and hot air (“Y1,” “G,” and “HW”), the thermostat inputs will be ignored. An “HW” call by itself will cause an output on “Y1C” to the lockout

board, and an output to the hot water mode components (pump relay, direction valve, 3-way

valve) on terminal “HW.”

PRIORITY SELECTION

Priority selections are dened as follows:

• Hot water priority (default mode): In hot water priority mode, the aqua-stat input always takes priority, regardless of the thermostat inputs.

Once the hot water call is satised, and there is

still a thermostat call, the unit attempts to satisfy the thermostat call.

•

Hot water priority with electric heat: In hot water priority with electric heat mode, the aqua-stat input always takes priority, regardless of the thermostat inputs. However, if there is a simultaneous thermostat call for heating (reversing valve is not energized), the control will energize the fan and electric heat outputs, allowing electric heat to satisfy the thermostat

call. Once the hot water call is satised, and

there is still a thermostat call, the unit will then attempt to satisfy the thermostat’s force air call

after a ve-minute anti-short cycle time delay

(i.e. compressor). The thermostat inputs will determine the operating mode.

•

Forced air priority: In forced air priority mode, the thermostat input always takes priority, regardless of the aqua-stat input. Once the thermostat call

is satised, and there is still an aqua-stat call, the

unit attempts to satisfy the hot water call after a

ve-minute anti-short cycle time delay.

• Shared priority: In shared priority mode, the unit operates in the hot water priority mode and in forced air priority mode in an alternating

sequence. There is a eld selectable timer,

which will allow settings of 20, 30, or 40 minutes for switch over time. The unit will always start

in hot water priority mode at the rst call for

hot water (aqua-stat input). Then, based upon the timer setting, the unit will switch to forced air priority for the selected amount of time. For example, if the timer is set for 20 minutes, and the unit has a simultaneous call for hot water and thermostat, the control will operate the hot water mode for 20 minutes and switch over to forced air priority for 20 minutes. The unit can switch back to hot water priority for 20 minutes,

and so on until the calls are satised. If the aqua-stat call is satised, forced air operation is

allowed at any time; likewise if the thermostat is

satised, hot water operation is allowed at any time. There is a ve-minute anti-short cycle timer

between modes.

Figure 16: Combination Unit Control Board

HW HW HW Y2C W Y1F O Y1C Y2F G

REF REV PMP OUT OUT OUT OUT OUT OUT OUT

HW HW STATUS

POWER OUT IN 2 1

Combination

Board

CT Models, Rev.: A Enertech Global

Section 8: Combination Unit Controls

Table 8: Combination Controls DIP Switch Settings

Operation Mode Fan Mode

Hot Water Priority

Hot Water Priority with Electric Heat

Forced air Priority

Shared Priority

(check every 20 min)

Shared Priority

(check every 30 min)

Shared Priority

(check every 40 min)

Hot Water Priority

Hot Water Priority with Electric Heat

Forced air Priority

Shared Priority

(check every 20 min)

Shared Priority

(check every 30 min)

Shared Priority

(check every 40 min)

Factory settings are ON/OFF/OFF/ON

Fan OFF during HW mode

regardless of ‘G’

Fan OFF in HW mode except in Elec Ht oper

Fan OFF during HW mode

regardless of ‘G’

Fan OFF during HW mode

regardless of ‘G’

Fan OFF during HW mode

regardless of ‘G’

Fan OFF during HW mode

regardless of ‘G’

Fan every time there

is a ‘G’ call

Fan every time there

is a ‘G’ call

Fan every time there

is a ‘G’ call

Fan every time there

is a ‘G’ call

Fan every time there

is a ‘G’ call

Fan every time there

is a ‘G’ call

DIP Switch

1 2 3 4

ON OFF OFF ON

OFF ON OFF ON

ON ON OFF ON

OFF OFF ON ON

ON OFF ON ON

OFF ON ON ON

ON OFF OFF OFF

OFF ON OFF OFF

ON ON OFF OFF

OFF OFF ON OFF

ON OFF ON OFF

OFF ON ON OFF

Enertech Global CT Models, Rev.: A

Section 8: Combination Unit Controls

OUTPUT CONTROL

The hot water board sends output to the lockout and/or ECM control boards based upon the priority selections above and current operation mode. The board controls the following outputs:

• Compressor control: If there is a “Y1” call

from the thermostat and not an “HW” call, the “Y1” signal will be passed directly through the

board to the lock-out board. Otherwise, the priority modes (above) will determine how the compressor is controlled. In all priority modes, there will be a compressor off time of 5 minutes to allow the refrigerant circuit to equalize. For example, if the unit is in hot water priority mode, and the current operation is forced air heating (thermostat input), when the aqua-stat calls for heating, the lockout board will stop the compressor for 5 minutes regardless of the outputs from the hot water board.

•

Fan control: DIP switch #4 (Table 8) will allow or disallow fan operation during hot water

operation when there is a “G” input from the

thermostat. If there is an aqua-stat call and a

thermostat call, the board will control the fan output based upon priority. For example, if the

board is set for “Hot Water Priority,” and the fan control is set for “Fan OFF except in Hot Water

Priority with Electric Heat”, the board will ignore

all thermostat inputs (including the “G” input) until the aqua-stat is satised. If continuous fan

is desired, DIP switch #4 should be in the OFF position.

• Second stage operation: When in hot water

mode, the compressor will be operated in full

load (Y2). During water-to-air operation, the

compressor may operate in full or part load, depending upon the thermostat call.

• Reversing valve control: If there is a call for

cooling and not a call for hot water, the “O”

signal will be passed through the board to the reversing valve solenoid. Otherwise, the priority modes (above) will determine how the reversing valve is controlled. At no time will the unit provide chilled water. Operating modes are forced air heating, forced air cooling, and hot water mode

Table 9: LED Indicators

The board includes ve LEDs with the following operation:

• Power LED (Green): Indicates that the board has 24 VAC.

• HW IN LED (Yellow): Indicates that the aqua-stat is calling for hot water.

• HW OUT LED (Amber): Indicates that the board has energized the hot water mode components (compressor, pump relay, direction valve, 3-way valve).

• Status lights (two – red and green): see table below.

Mode

Heating stage 1 ON OFF 1 ON 1 ash

Heating stage 2 ON OFF 1 ON 2 ashes

Heating stage 3 ON OFF 1 ON 3 ashes

Emergency heat ON OFF 2 ON 4 ashes

Cooling stage 1 ON OFF 1,3 1 ash ON

Cooling stage 2 ON OFF 1,3 2 ashes ON

Hot water mode ON ON ON 1 ash 1 ash

Hot wtr mode w/elec ht ON ON ON 2 ashes 2 ashes

Fan only ON OFF OFF ON ON

1 HW IN (aqua-stat call) could be ON or OFF, depending upon priority selection and current state of hot water buffer tank. 2 Unless manually selected, emergency heat should only be used when the unit is locked out. The HW IN (aqua-stat call) would probably be

ON in the case of a unit lock out in the heating mode.

3 If the hot water mode is used for radiant oor or other hydronic heating applications, there would normally not be a HW IN (aqua-stat call) in

the cooling mode.

Power

LED (Green)

Hot Water LEDs Status lights

HW OUT

(Amber)

HW IN

(Yellow)

LED 2

(Red)

LED 1

(Green)

CT Models, Rev.: A Enertech Global

Section 8: Combination Unit Controls

SEQUENCE OF OPERATION:

Combination Units

Heating, 1st Stage (Y1,G) Forced Air

The ECM fan is started immediately at 75% (of 1st

stage operation) CFM level, rst stage compressor

and the loop/desuperheater pump(s) are energized

10 seconds after the “Y1” input is received. The ECM

fan adjusts to 100% (of 1st stage operation) CFM

level 30 seconds after the “Y1” input.

Heating, 2nd Stage (Y1,Y2,G) Forced Air The ECM fan adjusts to 2nd stage CFM level, and the compressor full load solenoid valve is energized

30 seconds after the “Y2” input is received.

Heat, 3rd Stage (Y1,Y2,W,G) Forced Air

The ECM fan remains at 100% of 2nd stage CFM level, and the electric backup heat is energized.

Emergency Heat (W,G) Forced Air

The fan is started immediately at 100% of 2nd stage CFM level, and the electric backup heat is energized.

Cooling Operation

The reversing valve is energized for cooling

operation. Terminal “O” from the thermostat is

connected to the reversing valve solenoid.

Cooling, 1st stage (Y1,0,G) Forced Air

The ECM fan is started immediately at 75% (of 1st

stage operation) CFM level, rst stage compressor

and the loop/desuperheater pump(s) are energized

10 seconds after the “Y1” input is received. The ECM

fan adjusts to 100% (of 1st stage operation) CFM

level 30 seconds after the “Y1” input.

Cooling, 2nd Stage (Y1,Y2,O,G) Forced Air

The ECM fan adjusts to 2nd stage CFM level, and the compressor full load solenoid valve is energized

30 seconds after the “Y2” input is received.

Cooling, Dehumidication Mode The ECM control module includes two types of

dehumidication modes, Forced Dehumidication mode, and On Demand Dehumidication

(ODD). If the ECM control module is set to Forced

Dehumidication mode, the ECM fan runs at

normal CFM in all heating stages, but all cooling operation will be 85% of the current stage CFM level, which lowers the CFM through the evaporator coil, improving latent capacity. In ODD mode, a

humidistat or a thermostat with a dehumidication

output (output must be reverse logic -- i.e. it must operate like a humidistat) is connected to the ODD terminal. When the module receives a call

for dehumidication, the fan runs at 85% of the

current stage CFM in the cooling mode. Otherwise,

the airow is at the normal CFM level. The signal is

ignored in the heating mode.

Fan Only

When the ECM control module receives a “G”

call without a call for heating or cooling, the fan operates at a lower CFM level (based on DIP

switch settings).

Hot Water Operation (HW)

First stage compressor, direction valve, 3-way valve, load pump relay, and loop/desuperheater pump(s) are energized 10 seconds after the Aqua-stat

(“HW”) input is received. The compressor full load

solenoid valve is energized 30 seconds after the

“HW” input is received. The compressor always runs

in full load (2nd stage) in hot water mode. NOTE: Combination units can heat water, but do not have chilled water capability.

Time Delays When Switching Modes

In order for the direction valve and 3-way valve to switch properly, the system must have time for the refrigerant pressures to equalize. The combo board always initiates a two-minute delay when switching from forced air mode to the hot water mode to insure that the valves are not switched before the pressures have equalized. The lockout

board initiates a ve-minute anti-short cycle delay

anytime the compressor signal is interrupted. For example, if the unit is running in forced air heating, and gets a call from the aqua-stat (when the board is in hot water priority mode), the combo board will de-energize the compressor. After two minutes, the combo board will re-energize the compressor relay, direction valve, and 3-way valve for hot water mode operation. Even though the combo board is calling for compressor, the lockout board still requires an additional 3 minutes before the compressor has been off for 5 minutes. Therefore, there will always

be ve minutes off time when switching mode

Enertech Global CT Models, Rev.: A

Section 8: Unit Operating Modes

Unit Operation: Air Heating Mode (Water-to-Air)

NOTES:

Red text indicates thermostat inputs or aquastat inputs. “HW” is the aquastat input. “HW-1” and “HW-2” are always activated together, and act as a single output from a control standpoint.

Condenser (heating) Evaporator (cooling) Not used in hot water mode

Electric

Heat Coil

(W)

Fan (G)

Liquid line (cooling)

Source

Coax

Condenser (cooling)

Evaporator (heating)

(HW-1)

3-Way

Air Coil

suction

Filter Drier

line

Reversing

Valve

(O)

Valve

To suction line bulb

TXV

Liquid line

(heating)

discharge

line

(HW-2)

Condenser (water heating)

Not used in cooling

Direction

Valve

Discharge

Suction

Load Heat

Exchanger

= Not Active

Connection to compressor solenoid valve for full load operation (Y2

)

Electrical connections to compressor contactor

energizes contactor

(Y1 solenoid)

In air heating mode, “O” is de-energized; “HW-1” and “HW-2” are de-energized; “G” is energized; “Y1” is energized. “Y2” is energized if the thermostat calls for 2nd stage heating; “W” is energized if the thermostat calls for 3rd stage heating. If the

thermostat is calling for emergency heat, only “W” and “G” are energized. All other inputs are de-energized in emergency heat.

CT Models, Rev.: A Enertech Global

Section 8: Unit Operating Modes

Unit Operation: Air Cooling Mode (Water-to-Air)

NOTES:

Red text indicates thermostat inputs or aquastat inputs. “HW” is the aquastat input. “HW-1” and “HW-2” are always activated together, and act as a single output from a control standpoint.

Condenser (heating) Evaporator (cooling) Not used in hot water mode

Electric

Heat Coil

(W)

Fan (G)

Source

Coax

Condenser (cooling)

Evaporator (heating)

Air Coil

Liquid line (cooling)

Filter Drier

Reversing

Valve

(O)

suction

line

(HW-1)

3-Way

Valve

To suction line bulb

TXV

Liquid line

(heating)

Optional desuperheater

installed in discharge line

(always disconnect during

discharge

line

(HW-2)

troubleshooting)

Condenser (water heating)

Not used in cooling

Direction

Valve

Discharge

Suction

Load Heat

Exchanger

= Not Active

Connection to compressor solenoid valve for full load operation (Y2

)

Electrical connections to compressor contactor

energizes contactor

(Y1 solenoid)

In air cooling mode, “O” is energized; “HW-1” and “HW-2” are de-energized; “G” is energized; “Y1” is energized. “Y2” is energized

if the thermostat calls for 2nd stage cooling.

Enertech Global CT Models, Rev.: A

Section 8: Unit Operating Modes

Unit Operation: Water Heating Mode (Water-to-Water)

NOTES:

Red text indicates thermostat inputs or aquastat inputs. “HW” is the aquastat input. “HW-1” and “HW-2” are always activated together, and act as a single output from a control standpoint.

Condenser (heating) Evaporator (cooling) Not used in hot water mode

Electric

Heat Coil

(W)

Fan (G)

Liquid line (cooling)

Source

Coax

Condenser (cooling)

Evaporator (heating)

(HW-1)

3-Way

Air Coil

suction

Filter Drier

line

Reversing

Valve

(O)

Valve

To suction line bulb

TXV

Liquid line

(heating)

Optional desuperheater installed in discharge line (always disconnect during

discharge

line

(HW-2)

troubleshooting)

Condenser (water heating)

Not used in cooling

Direction

Valve

Discharge

Suction

Load Heat

Exchanger

= Not Active

Connection to compressor solenoid valve for full load operation (Y2

)

Electrical connections to compressor contactor

energizes contactor

(Y1 solenoid)

In water heating mode (aqua-stat input), “O” is de-energized; “HW-1” and “HW-2” are energized; “G” is de-energized; “Y1” and “Y2” are energized; “W” is de-energized. If the control is set to “hot water priority with electric heat,” “W” and ”G” may be energized if

there is a simultaneous heating call from the thermostat and the aqua-stat. The refrigerant circuit is not capable of chilled water operation. “O” is never energized during water heating mode.

CT Models, Rev.: A Enertech Global

Section 8: Controls

Enertech Global CT Models, Rev.: A

Section 8: Controls

CT Models, Rev.: A Enertech Global

Section 8: Controls

Enertech Global CT Models, Rev.: A

Section 9: Accessories

240 208 240 208 240 208 240 208 240 208 240 208 240 208 240 208

AHTR101C Single 10 7.5 5 3.75 41.7 36.1 52.1 45.1 60 50 2 6 8 0 0

L1/L2 5 3.75 20.8 18.0 26.0 22.5 30 25 2 10 12 0 0

L3/L4 10 7.50 41.7 36.1 52.1 45.1 60 50 2 6 8 0 0

L1/L2 10 7.50 41.7 36.1 52.1 45.1 60 50 2 6 8 0 0

L3/L4 10 7.50 41.7 36.1 52.1 45.1 60 50 2 6 8 0 0

240 208 240 208 240 208 240 208 240 208 240 208 240 208 240 208

5 3.75

10 7.50

Technical Data (AHTR Electric Heaters Only) Single Phase w/ Circuit Breaker and Single Point Connection Block

Recommended

Table 10: Auxiliary Heater Electrical Data

Technical Data (AHTR Electric Heaters Only) Single Phase w/ Circuit Breaker

Supply

Heater Model

AHTR151C 15 11.25

AHTR201C 20 15

Heater Model

AHTR151CC* Single 15

Circuit

Number

Supply

Circuit

Number

Heat kW

11.25 62.5

Heater kW

Per Circuit

Heater kW

Per Circuit

FLA

Total

AMPS

FLA

Total

AMPS

Minimum

Ampacity

Minimum

Ampacity

78.1 67.6 80

54.1

MCA-

Circuit

MCA-

Circuit

MOCP

Maximum

Overcurrent

Protective

Device

(AMPS)

NEC 240.4(B)

MOCP

Maximum

Overcurrent

Protective

Device

(AMPS)

NEC 240.4(B)

70 2 4 4 0 0 8

Branch Circuit Conductor

75°C Copper

NEC 310.15(B)(16), Ch. 9 Table 9

Min Wire

# of

Wires

NEC 310.15(B)(16), Ch. 9 Table 9

# of

Wires

Size

(AWG)

Branch Circuit Conductor

75°C Copper

Min Wire

Size

(AWG)

Max

Length (ft)

Max

Length (ft)

Ground

Wire

NEC 250.122

Min Wire

Size

(AWG)

Ground

Wire

NEC 250.122

Min Wire

Size

(AWG)

AHTR201CC* Single 20 15 83.3 72.1 104.2

*Single Point Connection

90.1 110

0 6 8100 2 2 3 0

CT Models, Rev.: A Enertech Global

Section 9: Accessories

Figure 17: Auxiliary Heater Placement

Heater Support Rod Fits into Hole

Rotate Circuit Breakers 180 Degrees for RH and

LH DN Airow

Representative drawing only, some models may vary in appearance.

Installing Electric Heater High Voltage Wires: All wiring MUST be done in strict compliance with local, state, national or any other applicable codes.

Note: If Electric Auxiliary is used, never disconnect power to the heat unit as it may be required to properly heat the home. Major damage may result.

APSMA PUMP SHARING MODULE

The pump sharing module, part number APSMA, is designed to allow two units to share one

ow center. With the APSMA module, either

unit can energize the pump(s). Connect the

units and ow center as shown in Figure 18,

below. Figure 19 includes a schematic of the board. The module must be mounted in a NEMA enclosure or inside the unit control box. Local code supersedes any recommendations in this document.

Figure 18: APSMA Module Layout

240VAC

Power Source

24VAC

connection

to unit #1

(Y1 & C From Thermostat)

240V IN

240V OUT

Relay Relay

24VAC 24VAC

240VAC

to Pump(s)

connection

to unit #2

(Y1 & C From Thermostat)

24VAC

Please note, these heaters are for vertical units only. Please see the Field-Installed Electric Heat IOM, part number 20D156-01NN for detailed instructions on the installation and wiring of auxiliary electric heaters.

Figure 19: APSMA Module Wiring Schematic

Bridge

LED

24VAC input

from unit #1

24VAC input

from unit #2

Diode

RY1

RY2

240VAC input

Diode

RY2

240VAC to pump(s)

Enertech Global CT Models, Rev.: A

Section 10: Eqipment Start up Procedures

EQUIPMENT START-UP FORM

Unit Electrical Data

Loop Type: Open Closed

(Circle One)

Line Voltage

Wire Size

Circuit Breaker Size

Cooling

Heating

Cooling

Heating

Flow Rate

*Check pressure drop chart for GPM

Total Unit Amps

Compressor Amps

Flow Rate

Source Water Pressure In

Source Water Pressure Out

Source Water Pressure Drop

BTU/HR

Source Water Temp. Difference

Cooling

Heating

Source Water Temperature In

Source Water Temperature Out

Source Water Temperature Difference

Cooling

Heating

Load Water Temp. Difference

Cooling

Heating

Heat of Extraction/Rejection = GPM X Water Temp. Difference X 485 (Water & Antifreeze - Closed Loop)

Heat of Rejection

Heat Of Extraction

Load Water Temperature In

Load Water Temperature Out

Load Water Temperature Difference

Heat of Extraction/Rejection = GPM X Water Temp. Difference X 500 (Water - Open Loop)

Air Temperature Difference

Supply Air Temperature

Return Air Temperature

Air Temp. Difference

Auxiliary Heat Operation Only

Supply Air Temperature

*Confirm auxiliary heaters are de-energized for the above readings.

Return Air Temperature

Air Temp. Difference

Auxiliary Heat Electrical Data

CFM = (Watts X 3.413) ÷ (Air Temp. Difference X 1.08)

Watts = Volts X Auxiliary Heater Amps

Line Voltage

Total Amperage (Full kW - All Stages)

Wire Size

Breaker Size

Customer Name:_________________________________________________________________

Customer Address:_____________________________________________________________________________________

Model #:__________________________________________ Serial #:____________________________________________

Dealer Name:__________________________________________________________________________________________

Distributor Name:_____________________________________________ Start-up Date:____________________________

PSI PSI V PSI PSI A A PSI PSI A A GPM GPM GA

Heat of Rejection/Extraction

Cut along this line

ºF ºF ºF ºF ºF ºF

BTU/HR

ºF ºF ºF ºF ºF ºF

Cooling Heating

ºF ºF ºF ºF ºF ºF

Heating

ºF ºF ºF

Heating

V A

Installer/Technician:____________________________________________ Date:________________________

Section 10: Eqipment Start up Procedures

Equipment Start-Up Process

Check the following before power is applied to the equipment

Caution: Do not start-up the unit until the new structure is ready to be occupied

Electrical:

 Geothermal unit high voltage

wiring is installed correctly

 Geothermal unit high voltage

wiring and breaker are the correct size

 Auxiliary electric heaters are

wired and installed correctly

 Circulating pumps are wired and

fused (if necessary) correctly

 Desuperheater pump is NOT

wired, unless piping is complete and all air is purged

 Low voltage wiring is correct and

completely installed

Equipment Start-Up

1. Energize geothermal unit with

high voltage.

2. Set the thermostat to “Heat” or “Cool.” Adjust set point to energize the unit. System will energize after delays expire (typically a five minute delay).

3. Check water flow with a flow meter (non-pressurized) or pressure drop conversion (pressurized). Pressure drop tables must be used to convert the pressure drop to GPM. The pressure drop can be obtained by checking water pressure in and water pressure out at the P/T ports.

4. Check the geothermal unit’s electrical readings listed in the Unit Electrical Data table.

5. Check the source water temperature in and out at the P/T ports (use insertion probe). Allow 10 minutes of operation before recording temperature drop.

6. Calculate the heat of extraction or heat of rejection.

Plumbing:

 Pipe and pump sizes are correct  Air is purged from all lines  Antifreeze is installed  All valves are open, including

those on the flow center

 Condensate is trapped and piped

to the drain

Ductwork:

 Filter is installed and clean  Packaging is removed from the

blower assembly

 Blower turns freely  Canvas connections installed on

supply plenum & return drop

7. Check the temperature difference of the load coax (water-to-water) or air coil (water-to-air). P/T ports are recommended for use on the load side, but the line temperatures can be used to check the temperature difference.

8. Change the mode of the thermostat and adjust the set point to energize the unit. Check the data in opposite mode as the previous tests. Amp draws as well as temperature differences and flow rate should be recorded.

9. Check auxiliary heat operation by adjusting the thermostat set point 5°F above the room temperature in “Heat” mode or set thermostat to “Emergency." Record voltage, amperage, and air temperature difference.

Section 11: Troubleshooting

PERFORMANCE CHECK

Heat of Extraction(HE)/Rejection(HR) Record information on the Unit Start-up Form

Equipment should be in full load operation for a minimum of 10 minutes in either mode – WITH

THE HOT WATER GENERATOR TURNED OFF.

1. Determine ow rate in gallons per minute

a. Check entering water temperature b. Check entering water pressure c. Check leaving water pressure

Once this information is recorded, nd

corresponding entering water temperature

column in Specication Manual for unit.

Find pressure differential in PSI column in Spec Manual. Then read the GPM column in Spec

Manual to determine ow in GPM.

2. Check leaving water temperature of unit. FORMULA: GPM x water temp diff, x 485 (antifreeze) or 500 (fresh water) = HE or HR in BTU/HR

A 10% variance from Spec Manual is allowed. Always use the same pressure gauge & temperature measuring device.

Water ow must be in range of Specication Manual. If system has too much water ow,

performance problems should be expected.

CT Models, Rev.: A Enertech Global

Section 11: Troubleshooting

A: UNIT WILL NOT START IN EITHER CYCLE

Set thermostat on heating and highest temperature setting. Unit should run. Set thermostat on cooling and

Thermostat

Loose or broken wires Tighten or replace wires.

Blown Fuse/ Tripped Circuit Breakers

Low Voltage Circuit

lowest temperature setting. Unit should run. Set fan to On position. Fan should run. If unit does not run in

any position, disconnect wires at heat pump terminal block and jump R, G, Y. Unit should run in heating. If

unit runs, replace thermostat with correct thermostat only.

Check fuse size, replace fuse or reset circuit breaker. Check low voltage circuit breaker.

Check 24 volt transformer. If burned out or less than 24 volt, replace. Before replacing, verify tap setting and correct if necessary.

B: BLOWER RUNS BUT COMPRESSOR WILL NOT START

Logic Board Check if logic board is working properly. Check status light for fault. See board imprint for blink faults.

Flow Switch

Defective logic board relay Jump or bypass relay. If defective, replace.

Defective capacitor Check capacitor. If defective, replace.

Frozen Compressor See charts O and P for compressor diagnostic. If compressor still doesn’t run, replace it.

Low refrigerant charge Check for leaks and x leaks.

Temporarily bypass ow switch until compressor starts. If compressor runs properly, check switch. If

defective, replace. If switch is not defective, check for air in loop system. Make sure loop system is

properly purged. Verify ow rate before changing switch.

C: BLOWER RUNS BUT COMPRESSOR SHORT CYCLES OR DOES NOT RUN

Wiring Loose or broken wires. Tighten or replace wires. See A: Unit will not start in either cycle.

Blown Fuse

Flow Switch

Water Flow

High or low pressure switches

Check fuse size. Check unit nameplate for correct sizing. Replace fuse or reset circuit breaker. Check low voltage circuit breaker.

Temporarily bypass ow switch for a couple seconds. If compressor runs properly, check switch. If

defective, replace. If switch is not defective, check for air in loop system. Make sure loop system is

properly purged. Verify ow rate before changing switch. .

If water ow is low (less than 3.5 GPM), unit will not start. Make sure Pump Module or solenoid valve is connected (see wiring diagram). Water has to ow through the heat exchanger in the right direction (see labels at water tting connections) before the compressor can start. If water ow is at normal ow, use an ohmmeter to check if you get continuity at the ow switch. If no switch is open and ow is a normal ow,

remove switch and check for stuck particles or bad switch.

If heat pump is out on high or low-pressure cutout (lockout), check for faulty switches by jumping the

high and low-pressure switches individually. If defective replace. Check airow, lters, water ow, loss of

refrigerant and ambient temperature. WARNING: Only allow compressor to run for a couple of seconds with the high pressure switch jumpered

D: BLOWER FAILS TO START BUT COMPRESSOR ATTEMPTS TO START

Defective blower motor capacitor

Defective blower motor relay Check relay. If defective, replace.

Check capacitor. If defective, replace.

E: NOISY BLOWER AND LOW AIR FLOW

Noisy Blower

Broken belt If defective, replace belt. Check pulleys. If bad, replace. Check bearings. If frozen, replace bearing.

Low air ow

Blower wheel contacting housing—Readjust. Foreign material inside housing—Clean housing. Loose duct work—Secure properly.

Check speed setting, check nameplate or data manual for proper speed, and correct speed setting.

Check for dirty air lter—Clean or replace; obstruction in system—Visually check.

Balancing dampers closed, registers closed, leaks in ductwork. Repair. Ductwork too small. Resize ductwork.

F: UNIT RUNNING NORMAL, BUT SPACE TEMPERATURE IS UNSTABLE

Thermostat

Thermostat is getting a draft of cold or warm air. Make sure that the wall or hole used to run thermostat wire from the ceiling or basement is sealed, so no draft can come to the thermostat. Faulty Thermostat (Replace).

Enertech Global CT Models, Rev.: A

Section 11: Troubleshooting

G: NO WATER FLOW

Make sure Pump Module is connected to the control box relay (check all electrical connections). For non-

Pump Module

Solenoid valve Make sure solenoid valve is connected. Check solenoid. If defective, replace.

pressurized systems, check water level in Pump Module. If full of water, check pump. Close valve on the

pump anges and loosen pump. Take off pump and see if there is an obstruction in the pump. If pump is

defective, replace. For pressurized systems, check loop pressure. Repressurize if necessary. May require

re-ushing if there is air in the loop.

H: IN HEATING OR COOLING MODE, UNIT OUTPUT IS LOW

Water Water ow & temperature insufcient.

Airow

Refrigerant charge

Reversing valve

Check speed setting, check nameplate or data manual for proper speed, and correct speed setting.

Check for dirty air lter—Clean or replace.

Restricted or leaky ductwork. Repair.

Refrigerant charge low, causing inefcient operation. Make adjustments only after airow and water ow

are checked.

Defective reversing valve can create bypass of refrigerant to suction side of compressor. Switch reversing valve to heating and cooling mode rapidly. If problem is not resolved, replace valve. Wrap the valve with a wet cloth and direct the heat away from the valve. Excessive heat can damage the valve. Always use dry

nitrogen when brazing. Replace lter/drier any time the circuit is opened.

I: IN HEATING OR COOLING MODE, UNIT OUTPUT IS LOW

Heat pump will not cool but will heat. Heat pump will not heat but will cool.

Water heat exchanger

System undersized Recalculate conditioning load.

Reversing valve does not shift. Check reversing valve wiring. If wired wrong, correct wiring. If reversing valve is stuck, replace valve. Wrap the valve with a wet cloth and direct the heat away from the valve.

Excessive heat can damage the valve. Always use dry nitrogen when brazing. Replace lter/drier any time

the circuit is opened.

Check for high-pressure drop, or low temperature drop across the coil. It could be scaled. If scaled, clean with condenser coil cleaner.

J: WATER HEAT EXCHANGER FREEZES IN HEATING MODE

Water ow Low water ow. Increase ow. See F. No water ow.

Flow Switch Check switch. If defective, replace.

K: EXCESSIVE HEAD PRESSURE IN COOLING MODE

Inadequate water ow Low water ow, increase ow.

L: EXCESSIVE HEAD PRESSURE IN HEATING MODE

Low air ow See E: Noisy blower and low air ow.

M: AIR COIL FREEZES OVER IN COOLING MODE

Air ow See E: Noisy blower and low air ow.

Blower motor

Panels Panels not in place.

Low air ow See E: Noisy blower and low air ow.

Motor not running or running too slow. Motor tripping off on overload. Check for overheated blower motor and tripped overload. Replace motor if defective.

N: WATER DRIPPING FROM UNIT

Unit not level Level unit.

Condensation drain line plugged

Water sucking off the air coil in cooling mode

Water sucking out of the drain pan

Unplug condensation line.

Too much airow. Duct work not completely installed. If duct work is not completely installed, nish duct work. Check static pressure and compare with air ow chart in spec manual under specic models section.

If ductwork is completely installed it may be necessary to reduce CFM.

Install an EZ-Trap or P-Trap on the drain outlet so blower cannot suck air back through the drain outlet.

CT Models, Rev.: A Enertech Global

Section 11: Troubleshooting

O: COMPRESSOR WON’T START

Check for proper compressor nameplate voltage.

Attempt to restart the compressor

Does Compressor draw

current when voltage is applied.

Check voltage supply

& contactor operation.

Is the compressor hot?

Allow time for the protector to reset.

Recheck Resistance

Replace Compressor

Yes

Not

Are the suction &

Yes

discharge pressures balanced.

Check motor

resistance. (See Note B)

Not OK

Yes

Allow time for compressor to balance.

Voltage supply is too low.

Compressor Connection Block

Single Phase 208-230 C = Line Winding R = Run Winding S = Start Winding

Check the wiring, capacitor & contactor operation. (See Note A)

Allow to start the compressor while measuring voltage on the load side of the contactor.

Is the voltage 197 or higher when the compressor is trying to start.

Yes

If the compressor fails to start after 3 attempts, replace

the compressor.

A: Check all terminals, wires & connections for loose or burned wires and connections. Check contactor and 24 Volt

coil. Check capacitor connections & check capacitor with capacitor tester.

B: If ohm meter reads 0 (short) resistance from C to S, S to R, R to C or from anyone of one of these terminals to

ground (shorted to ground), compressor is bad.

P: COMPRESSOR WON’T PUMP CHART

Is the c om p re sso r ru n n ing?

N o

R ef er t o th e c o m p re ssor w on 't s tar t f lo w ch ar t.

M ea su re & r eco rd

Y es Y es

th e a mp s , volts ,

sucti on & d is ch ar g e

p re ss ur e.

D oe s th e u n it

O K

h av e a r e frig er an t c h arg e?

A dd r e frig er an t to t h e sy st em .

If th e co m p re sso r s till w o n't pum p

re p lace co mp re ssor.

N o

S hut t h e unit d ow n &

re v ers e th e p h as ing

(3 -P hase O nly )

C heck & v er ify th e r un c ap acitor

C heck th e ope ra tion o f t h e re ve rs ing

O K

v a lve.

O K

Enertech Global CT Models, Rev.: A

Section 11: Troubleshooting

Table 11: Refrigeration Troubleshooting

System Faults Mode

Under Charge

Over Charge

Low Air Flow

Low Source Water Flow

Low Load Water Flow

Restricted TXV

TXV Stuck Open

Inadequate Compression

Discharge

Pressure

Heat Low Low High Low Low Low Low

Cool Low Low High Low Low Low Low

Heat High High/Normal Normal High High Normal High

Cool High High/Normal Normal High Normal High High

Heat High High/Normal Normal High/Normal High Low High

Cool Low Low/Normal Low Normal High Low High/Normal

Heat Low Low/Normal Low Normal High Low High/Normal

Cool High High/Normal Normal High/Normal High Low High

Heat High High/Normal Normal High/Normal High Low High

Cool Low Low/Normal Low Normal High Low High/Normal

Heat High Low High High Low Low Low

Cool High Low High High Low Low Low

Heat Low High/Normal Low Low Low Low High

Cool Low High/Normal Low Low Low Low High

Heat Low High High/Normal Low/Normal Low Low Low

Cool Low High High/Normal Low/Normal Low Low Low

Suction

Pressure

Superheat Subcooling Air TD Water TD

Compressor

Amps

Oil Separator: Location in Refrigerant Circuit (CT 024 example)

CT Models, Rev.: A Enertech Global

Oil SeparatOr

Superheat Subcooling Condition

Normal Normal Normal operation Normal High Overcharged

High Low Undercharged High High Restriction or TXV is stuck almost closed

Low Low TXV is stuck open

Heating - Without Desuperheater

EWT GPM

Per Ton

Discharge

Pressure

(PSIG)

Suction

Pressure

(PSIG)

Sub

Cooling

Super

Heat

Air

Temperature

Rise (°F-DB)

Water

Temperature

Drop (°F)

1.5

285-310

290-315

68-76

70-80

4-10

8-12

14-20

16-22

5-8

3-6

1.5

315-345

320-350

100-110

105-115

6-12

9-14

22-28

24-30

7-10

5-8

1.5

355-395

360-390

135-145

140-150

7-12

10-15

30-36

32-38

9-12

7-10

Cooling - Without Desuperheater

EWT GPM

Per Ton

Discharge

Pressure

(PSIG)

Suction

Pressure

(PSIG)

Sub

Cooling

Super

Heat

Air

Temperature

Drop (°F-DB)

Water

Temperature

Rise (°F)

1.5

220-235

190-210

120-130

10-16

12-20

20-26

19-23

9-12

1.5

280-300

250-270

125-135

8-14

10-16

19-24

18-22

9-12

Section 11: Troubleshooting

Superheat/Subcooling Conditions

Table 4: Typical R-410A Unit Superheat/Subcooling Values

Enertech Global CT Models, Rev.: A

Section 11: Forms - Troubleshooting

Customer/Job Name:____________________________________________ Date:________________________________

Model #:__________________________________________ Serial #:____________________________________________

HE or HR = GPM x TD x Fluid Factor

Antifreeze Type:____________________________________

(Use 500 for water; 485 for antifreeze)

Heating

Mode

Air Coil

Suction

Discharge

Air Coil

Suction

Coax

Cooling

Return Air

°F

Supply Air

Condenser (heating) Evaporator (cooling) Not used in hot water mode

Mode

Air Coil

°F

Source

Coax

Liquid line (cooling)

Source (loop) IN

Source (loop) OUT

°F

psi

°F

psi

Discharge

GPM

Condenser (cooling)

Evaporator (heating)

Diagram A: Combo Unit -- Forced Air Mode

Cut along this line

°F

Filter Drier

Reversing

Valve

suction

line

To suction line bulb

TXV

Suction temp

SH = Suction Temp. - Suction Sat. SC = Disch. Sat. - Liq. Line Temp.

NOTE: Black lines show inactive part of circuit when in forced air mode.

Condenser (water heating)

Valve

°F

Not used in cooling

psi

Discharge Line

Discharge

Suction

(saturation)

Load

Heat

Exchanger

°F

Optional desuperheater installed in discharge line (always disconnect during

troubleshooting)

3-Way

Valve

°F

Liquid line

(heating)

Suction Line

discharge

°F

line

psi

suction

line

Direction

(saturation)

NOTE: Black lines show inactive part of circuit when in hot water mode.

3-Way

Valve

To suction line bulb

TXV

Liquid line

(heating)

°F

Suction temp

GPM

°F

Source

Coax

Condenser (cooling) Evaporator (heating)

Air Coil

Liquid line (cooling)

Source (loop) IN

Source (loop) OUT

Condenser (heating) Evaporator (cooling) Not used in hot water mode

suction

Filter Drier

°F

psi

°F

psi

Reversing

Valve

line

Diagram B: Combo Unit -- Water Heating Mode

°F

Suction Line

suction

discharge

line

psi

line

Direction

Valve

(saturation)

Load IN

°F

psi

Discharge Line

Discharge

Suction

Condenser (water heating)

psi

°F

(saturation)

Not used in cooling

Load

Heat

Exchanger

°F

psi

Load OUT

Optional desuperheater

installed in discharge line

(always disconnect during

troubleshooting)

GPM

Page Left Intentionally Blank

Section 11: Unit Electrical Data

20D237‐04NN:CTElectricalData

Two-Stage Packaged Units

Voltage

Model

CT024

CT036

CT048

CT060

CT072

Code/ HWG

Option

00 01 10 11 20 21

30/35

00 01 10 11 20 21

30/35

00 01 10 11 20 21

30/35

00 01 10 11 20 21

30/35

00 01 10 11 20 21

30/35

208/230 1 58.3 11.7 3.9 0.0 0.0 15.6 18.5 30 14 208/230 1 58.3 11.7 3.9 0.5 0.0 16.1 19.0 30 14 208/230 1 58.3 11.7 3.9 0.0 4.0 19.6 22.5 30 12 208/230 1 58.3 11.7 3.9 0.5 4.0 20.1 23.0 35 12 208/230 3 55.4 6.5 3.9 0.0 0.0 10.4 12.0 15 14 208/230 3 55.4 6.5 3.9 0.5 0.0 10.9 12.5 15 14

208/230 1 83.0 15.3 3.9 0.0 0.0 19.2 23.0 35 12 208/230 1 83.0 15.3 3.9 0.5 0.0 19.7 23.5 35 12 208/230 1 83.0 15.3 3.9 0.0 4.0 23.2 27.0 40 10 208/230 1 83.0 15.3 3.9 0.5 4.0 23.7 27.5 40 10 208/230 3 73.0 11.6 3.9 0.0 0.0 15.5 18.4 30 14 208/230 3 73.0 11.6 3.9 0.5 0.0 16.0 18.9 30 14

208/230 1 104.0 21.2 5.2 0.0 0.0 26.4 31.7 50 8 208/230 1 104.0 21.2 5.2 0.5 0.0 26.9 32.2 50 8 208/230 1 104.0 21.2 5.2 0.0 5.5 31.9 37.2 50 8 208/230 1 104.1 21.2 5.2 0.5 5.5 32.4 37.7 50 8 208/230 3 83.1 14.0 5.2 0.0 0.0 19.2 22.7 35 12 208/230 3 83.1 14.0 5.2 0.5 0.0 19.7 23.2 35 12

208/230 1 152.9 27.1 6.9 0.0 0.0 34.0 40.8 60 6 208/230 1 152.9 27.1 6.9 0.5 0.0 34.5 41.3 60 6 208/230 1 152.9 27.1 6.9 0.0 5.5 39.5 46.3 70 6 208/230 1 152.9 27.1 6.9 0.5 5.5 40.0 46.8 70 6 208/230 3 110.0 16.5 6.9 0.0 0.0 23.4 27.5 40 10 208/230 3 110.0 16.5 6.9 0.5 0.0 23.9 28.0 45 10

208/230 1 179.2 29.7 6.9 0.0 0.0 36.6 44.0 70 6 208/230 1 179.2 29.7 6.9 0.5 0.0 37.1 44.5 70 6 208/230 1 179.2 29.7 6.9 0.0 5.5 42.1 49.5 70 6 208/230 1 179.2 29.7 6.9 0.5 5.5 42.6 50.0 80 6 208/230 3 136.0 17.6 6.9 0.0 0.0 24.5 28.9 45 10 208/230 3 136.0 17.6 6.9 0.5 0.0 25.0 29.4 45 10

Notes:

1. All line and low voltage wiring must adhere to the National Electrical Code and local codes, whichever is the most stringent.

2. Wire length based on a one way measurement with a 2% voltage drop.

3. Wire size based on 60°C copper conductor and minimum circuit ampacity.

3. All fuses class RK-5.

4. Min/Max Voltage: 208/230/60/1 = 187-252, 208/230/60/3 = 187-252, 460/60/3 = 432-504

5. See Example Electrical Circuits for proper 460V power * The external pump FLA is based on a maximum of three UP26-116F-230V pumps (1/2hp) for 048 - 072 and two pumps for 024

- 036. Load pumps must be externally fused. Source pumps are circuit breaker protected. Total pump load (total source and load pumps) must not exceed FLA for external pump AMPS.

60 Hz Power Compressor

Volts Phase LRA RLA

460 3 28.0 3.5 3.2 0.0 0.0 6.7 7.6 10 14

460 3 38.0 5.7 3.2 0.0 0.0 8.9 10.3 15 14

460 3 41.0 6.4 4.7 0.0 0.0 11.1 12.7 15 14

460 3 52.0 7.2 6.0 0.0 0.0 13.2 15.0 20 14

460 3 66.1 8.5 6.0 0.0 0.0 14.5 16.6 25 14

Fan

Motor

FLA

HWG

Pump

FLA

Ext.

Loop

Pump

FLA

Total

Unit FLA

Min Circuit AMPS

Max

Fuse

HACR

AWG

Min

Max Ft

41 40 51 49 62 59 96

52 50 71 70 41 40 72

97 95 80 79 52 50 58

120 118 103 102

71 69 48

111 110

96 95 68 66 44

CT Models, Rev.: A Enertech Global

Section 12: Unit Electrical Data

NEUTRAL OR GROUND

NOTE: Proper Power Supply Evaluation

⚠ CAUTION ⚠

CHECK COMPRESSOR AMP DRAW TO

VERIFY COMPRESSOR ROTATION ON THREE

PHASE UNITS. COMPARE AGAINST UNIT

ELECTRICAL TABLES. REVERSE ROTATION

RESULTS IN HIGHER SOUND LEVELS,

LOWER AMP DRAW, AND INCREASED

COMPRESSOR WEAR. THE COMPRESSOR

When any compressor bearing unit is connected to a weak

power supply, starting current will generate a signicant “sag” in

the voltage which reduces the starting torque of the compressor

motor and increases the start time. 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 evaluation should include all connections, sizes of wires, and size of the distribution panel between the

unit and the utility’s connection. The transformer connection and

sizing should be evaluated by the electric utility provider.

INTERNAL OVERLOAD WILL TRIP AFTER A

SHORT PERIOD OF OPERATION.

Example 1: WYE (STAR) Electrical Circuit Example 2: DELTA Electrical Circuit

NEUTRAL OR GROUND

⚠ CAUTION ⚠

ALL VOLTAGE CODE “3” 460V UNITS UTILIZE

A 277V ECM MOTOR WHICH REQUIRES A

NEUTRAL WIRE. THE MOTORS ARE WIRED

BETWEEN THE NEUTRAL AND ONE HOT LEG

OF THE CIRCUIT. SOURCE WIRING MUST BE

WYE (STAR) CONFIGURATION. 3-PHASE

DELTA CONNECTIONS WILL NOT PROVIDE

THE CORRECT WIRING AND WILL CAUSE

THE UNIT NOT TO OPERATE.

Enertech Global CT Models, Rev.: A

Section 12: Water Flow Calculations and Glossary of Terms

Water Flow 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 deter-

mine if the top ow rate is adequate to prevent LWT at or near freezing

conditions. The following steps should 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).

Glossary of Terms

Calculate the temperature difference (TD) based upon the HE and GPM of the model (step 4). TD = HE / (GPM x 500). Calculate the LWT (step 6). 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 CT048, high capacity. Flow rate = 8 GPM. Air Flow = 1500 CFM. HE = 35,200 Btuh. TD = 35,200 / (8 x 500) = 8.8°F LWT = 50 - 8.8 = 41.2°F Since the water ow is leaving at approximately 41.2°F, the ow rate is acceptable.

Example 2:

EWT = 40°F. Model CT048, high capacity. Flow rate = 8 GPM. Air Flow = 1500 CFM. HE = 30,900 Btuh. TD = 30,900 / (8 x 500) = 7.7°F LWT = 40 - 7.7 = 32.3°F

Water ow rate must be increased to avoid freezing.

CFM = Airow, Cubic Feet/Minute HR = Total Heat Of Rejection, Btu/hr

COP = Coefcient of Performance = BTU Output / BTU Input KW = Total Power Unit Input, Kilowatts

DH = Desuperheater Capacity, Btu/hr LAT = Leaving Air Temperature, Fahrenheit

EAT = Entering Air Temperature, Fahrenheit (Dry Bulb/Wet Bulb)

LC = Latent Cooling Capacity, Btu/hr

EER = Energy Efciency Ratio = BTU output/Watts input SC = Sensible Cooling Capacity, Btu/hr

EWT = Entering Source Water Temperature, Fahrenheit LWT = Leaving Source Water Temperature, Fahrenheit

ELT = Entering Load Water Temperature, Fahrenheit LLT = Leaving Load Water Temperature, Fahrenheit

GPM = Water Flow, Gallons Per Minute TC = Total Cooling Capacity, Btu/hr

HC = Total Heating Capacity, Btu/hr WPD = Water Pressure Drop, PSI & Feet of Water

HE = Total Heat Of Extraction, Btu/hr

CT Models, Rev.: A Enertech Global

Section 12: Performance Data Correction Factors

Heating Correction Factors - Full Load

EAT °F HC HE kW

50 1.0450 1.1136 0.8208

55 1.0347 1.0892 0.8567

60 1.0260 1.0640 0.9019

65 1.0089 1.0270 0.9497

70 1.0000 1.0000 1.0000

75 0.9924 0.9741 1.0527

80 0.9870 0.9653 1.0522

Heating Correction Factors - Part Load

EAT °F HC HE kW

50 1.0480 1.1240 0.7839

55 1.0355 1.0943 0.8305

60 1.0246 1.0650 0.8837

65 1.0126 1.0330 0.9411

70 1.0000 1.0000 1.0000

75 0.9866 0.9661 1.0579

80 0.9613 0.9325 1.0513

Cooling Correction Factors Sensible Cooling Correction Factors

EAT

(WB) °F

TC HR kW

55 0.8215 0.8293 0.8635

60 0.8955 0.9001 0.9205

65 0.9701 0.9715 0.9774

67 1.0000 1.0000 1.0000

70 1.0446 1.0425 1.0335

75 1.1179 1.1124 1.0878

EAT

(WB) °F

70 75 80 85 90

55 1.201 1.289

60 0.943 1.067 1.192

63 0.852 0.995 1.138

65 0.797 0.952 1.106 1.261

67 0.624 0.812 1.000 1.188 1.343

70 0.697 0.820 0.944 1.067

75 0.637 0.817 0.983

EAT (DB) °F

Heating & Cooling Calculations

Heating Cooling

LAT = EAT + HC CFM x 1.08

LWT = EWT - HE GPM x 500

LAT (DB) = EAT (DB) - SC CFM x 1.08

LWT = EWT + HR GPM x 500

LC = TC - SC

Performance Data Notes

1. Capacity data is based upon 15% (by volume) methanol antifreeze solution.

2. Desuperheater capacity is based upon 0.4 GPM Flow per nominal ton at 90°F entering hot water temperature.

3. Interpolation between above categories is permissible; extrapolation is not.

4. See Flow Rate Selection above for proper application.

Enertech Global CT Models, Rev.: A

Section 12: AHRI Performance Data

Btu/hr COP Btu/hr EER

Full Load 24,300 5.1 28,900 26.0

Part Load 17,700 5.0 22,100 32.7

Full Load 36,700 5.0 41,700 23.5

Part Load 25,600 5.2 30,400 31.9

Full Load 46,700 4.6 53,100 21.8

Part Load 33,700 4.9 39,400 29.4

Full Load 58,500 4.4 65,600 21.7

Part Load 41,500 4.7 49,800 29.0

Full Load 70,300 4.2 75,100 20.2

Part Load 52,600 4.5 59,100 25.5

CT072

Model CAPACITY

HEATING

COOLING

CT024

CT036

CT048

CT060

Full Load 19,700 4.2 26,500 20.0

Part Load 15,700 4.5 20,900 27.3

Full Load 28,600 4.1 38,600 18.3

Part Load 22,400 4.6 29,100 26.8

Full Load 38,000 3.9 49,000 17.1

Part Load 29,700 4.3 37,400 24.1

Full Load 46,500 3.7 61,300 17.4

Part Load 36,400 4.1 48,000 24.4

Full Load 55,900 3.6 70,500 16.2

HEATING

COOLING

Ground Loop Heat Pump

Model CAPACITY

Btu/hr COP Btu/hr EER

CT024

CT036

CT048

CT060

CT072

Part Load 46,500 4.0 57,000 22.0

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: 32°F heating / 77°F cooling. Entering water temperatures Part Load: 41°F heating / 68°F cooling.

Ground Water Heat Pump

CT Models, Rev.: A Enertech Global

Section 12: Model 024 Performance Data: 2.0 Ton,

EWT Flow

LWT

Aiflow TC SC HR EER Discharge Suction Subcooling Superheat

°F GPM PSI FT °F CFM MBtuh MBtuh MBtuh Btuh/W PSIG PSIG °F °F

73.2 850 29.7 19.0 0.64 33.8 1.21 24.5 219.5 142.8 17.1 20.1

73.8 950 30.5 20.4 0.67 34.7 1.23 24.8 220.9 145.0 16.8 19.4

65.5 850 30.0 19.1 0.64 33.9 1.14 26.3 200.3 141.9 13.1 21.1

65.9 950 30.8 20.5 0.67 34.8 1.16 26.6 201.6 144.1 12.8 20.4

61.6 850 30.1 19.3 0.64 33.9 1.11 27.1 192.3 141.4 11.3 21.5

62.0 950 30.9 20.7 0.67 34.8 1.13 27.3 193.5 143.6 11.0 20.8

82.9 850 28.7 18.8 0.66 33.3 1.35 21.3 256.7 145.7 17.6 16.8

83.4 950 29.4 20.2 0.69 34.1 1.38 21.3 258.3 148.0 17.1 16.1

75.3 850 29.0 18.9 0.65 33.3 1.27 22.8 234.2 144.8 13.3 17.7

75.7 950 29.8 20.3 0.68 34.2 1.30 22.9 235.7 147.1 12.8 17.0

71.4 850 29.1 19.1 0.66 33.3 1.24 23.5 224.8 144.3 11.4 18.1

71.8 950 29.9 20.5 0.69 34.2 1.26 23.7 226.3 146.6 11.1 17.4

92.5 850 27.7 18.6 0.67 32.8 1.50 18.5 295.9 148.6 17.7 13.6

93.1 950 28.4 20.0 0.70 33.6 1.53 18.6 297.8 150.9 17.2 12.9

85.0 850 28.0 18.7 0.67 32.8 1.41 19.9 270.0 147.6 13.4 14.7

85.4 950 28.7 20.1 0.70 33.6 1.44 19.9 271.8 149.9 13.0 14.0

81.3 850 28.1 18.9 0.67 32.8 1.37 20.5 259.2 147.1 11.5 15.1

81.5 950 28.8 20.3 0.70 33.6 1.40 20.6 260.9 149.5 11.0 14.3

101.9 850 26.3 18.0 0.68 31.9 1.64 16.0 338.5 150.8 17.8 12.3

102.4 950 26.9 19.3 0.72 32.6 1.67 16.1 340.7 153.1 17.2 11.6

94.6 850 26.5 18.0 0.68 31.8 1.55 17.1 308.9 149.8 13.8 13.2

94.9 950 27.2 19.4 0.71 32.6 1.58 17.2 310.9 152.1 13.2 12.5

90.9 850 26.6 18.2 0.68 31.7 1.50 17.7 296.5 149.3 12.0 13.6

91.2 950 27.3 19.6 0.72 32.5 1.53 17.8 298.5 151.6 11.4 12.9

111.2 850 24.7 17.2 0.70 30.8 1.80 13.7 386.3 152.7 17.7 11.9

111.7 950 25.3 18.5 0.73 31.6 1.84 13.8 388.8 155.1 17.0 11.2

104.1 850 25.0 17.3 0.69 30.8 1.70 14.7 352.5 151.7 14.3 12.9

104.4 950 25.6 18.6 0.73 31.5 1.73 14.8 354.8 154.0 13.5 12.2

100.5 850 25.0 17.5 0.70 30.6 1.65 15.2 338.4 151.2 12.6 13.2

100.8 950 25.7 18.8 0.73 31.5 1.69 15.2 340.6 153.5 11.9 12.5

120.7 850 23.2 16.6 0.72 30.1 2.01 11.5 439.8 154.8 17.4 11.7

121.2 950 23.8 17.8 0.75 30.8 2.05 11.6 442.6 157.2 16.6 11.0

113.7 850 23.5 16.7 0.71 29.9 1.89 12.4 401.3 153.8 14.3 12.7

114.1 950 24.1 17.9 0.74 30.7 1.93 12.5 403.9 156.2 13.3 12.0

110.3 850 23.6 16.8 0.71 29.9 1.84 12.8 385.2 153.3 12.8 13.1

110.5 950 24.2 18.1 0.75 30.6 1.88 12.9 387.8 155.7 12.0 12.4

130.1 850 21.7 15.9 0.73 29.3 2.22 9.8 495.3 156.8 17.6 12.0

130.6 950 22.3 17.1 0.77 30.0 2.27 9.8 498.5 159.3 16.7 11.3

123.4 850 22.0 16.0 0.73 29.2 2.10 10.5 452.0 155.8 13.7 13.0

123.7 950 22.5 17.2 0.76 29.8 2.14 10.5 454.9 158.2 12.8 12.2

120.0 850 22.0 16.2 0.74 29.0 2.04 10.8 433.9 155.3 12.2 13.4

120.2 950 22.6 17.4 0.77 29.7 2.08 10.9 436.7 157.7 11.3 12.6

Cooling data based on 80/67 °F EAT. See Correction Factors at end of section for different conditions

LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI

SubCooling is ± 5 °F; Superheat is ± 6 °F

110

3.0 1.4 3.2

4.5 2.2 5.1

6.0 3.2 7.3

100

3.0 1.4 3.2

4.5 2.3 5.2

6.0 3.3 7.5

3.0 1.4 3.3

4.5 2.3 5.4

6.0 3.4 7.7

3.0 1.5 3.4

4.5 2.4 5.4

6.0 3.4 7.8

3.0 1.5 3.5

4.5 2.4 5.6

6.0 3.5 8.0

3.0 1.6 3.7

4.5 2.5 5.9

6.0 3.7 8.5

Cooling

WPD

S/T kW

3.0 1.7 3.9

4.5 2.7 6.2

6.0 3.9 8.9

Full Load, Cooling

Enertech Global CT Models, Rev.: A

Section 12: Model 024 Performance Data: 2.0 Ton,

EWT Flow

LWT

Aiflow LAT HC HE COP Discharge Suction Subcooling Superheat

°F GPM PSI FT °F CFM °F MBtuh MBtuh kW W/W PSIG PSIG °F °F

20.3 850 90.4 18.7 13.6 1.49 3.68 288.9 76.1 20.5 8.6

20.3 950 88.3 18.8 13.7 1.49 3.70 287.1 76.2 20.4 8.6

20.9 850 89.8 18.2 13.3 1.45 3.68 282.2 74.0 19.5 10.1

20.8 950 87.8 18.3 13.4 1.45 3.70 280.4 74.1 19.3 10.0

23.5 850 90.8 19.1 14.1 1.48 3.78 287.6 78.3 19.4 9.8

23.5 950 88.7 19.2 14.2 1.48 3.80 285.8 78.4 19.2 9.7

24.9 850 91.5 19.7 14.7 1.48 3.90 289.9 80.6 19.3 9.7

24.9 950 89.3 19.8 14.8 1.48 3.92 288.1 80.7 19.1 9.7

29.1 850 92.9 21.0 15.9 1.50 4.10 295.0 87.1 19.0 9.7

29.0 950 90.6 21.1 16.0 1.49 4.15 293.2 87.2 18.9 9.6

32.3 850 94.1 22.1 16.9 1.53 4.23 300.7 92.2 18.9 9.9

32.2 950 91.6 22.2 17.0 1.52 4.28 298.8 92.3 18.7 9.8

34.0 850 94.7 22.7 17.5 1.53 4.35 303.1 94.9 18.7 10.0

34.0 950 92.2 22.8 17.6 1.52 4.40 301.3 95.0 18.5 10.0

37.3 850 95.9 23.8 18.5 1.55 4.50 308.6 101.0 18.3 9.8

37.2 950 93.3 23.9 18.6 1.54 4.55 306.7 101.1 18.2 9.8

41.0 850 97.3 25.1 19.7 1.58 4.66 314.5 106.9 18.1 10.6

40.9 950 94.6 25.2 19.8 1.57 4.70 312.6 107.0 18.0 10.5

43.0 850 98.0 25.7 20.3 1.58 4.77 317.1 110.0 17.9 11.0

43.0 950 95.2 25.9 20.5 1.57 4.83 315.1 110.1 17.8 10.9

45.6 850 98.6 26.3 20.9 1.59 4.85 319.6 114.7 16.8 10.6

45.6 950 95.7 26.4 21.0 1.58 4.90 317.6 114.7 16.8 10.6

49.8 850 100.2 27.7 22.2 1.62 5.01 325.7 121.4 16.6 11.8

49.7 950 97.2 27.9 22.4 1.61 5.08 323.7 121.4 16.5 11.8

52.1 850 101.0 28.5 23.0 1.62 5.16 328.3 124.9 16.4 12.6

52.1 950 97.9 28.6 23.1 1.61 5.21 326.3 125.0 16.2 12.6

54.0 850 101.5 28.9 23.3 1.64 5.16 332.3 130.3 15.2 11.3

53.8 950 98.4 29.1 23.5 1.64 5.20 330.3 130.4 15.1 11.2

58.6 850 103.2 30.5 24.8 1.68 5.32 338.7 137.9 14.8 12.9

58.6 950 99.8 30.6 24.9 1.67 5.37 336.6 137.9 14.7 12.9

61.2 850 104.1 31.3 25.6 1.68 5.46 341.4 141.9 14.5 13.9

61.1 950 100.7 31.5 25.8 1.67 5.53 339.3 142.0 14.4 13.9

62.1 850 104.9 32.0 26.1 1.74 5.39 350.7 149.5 13.8 11.3

62.0 950 101.3 32.1 26.2 1.73 5.44 348.5 149.5 13.8 11.3

67.3 850 106.7 33.7 27.7 1.77 5.58 357.4 158.1 13.3 13.6

67.3 950 102.9 33.8 27.8 1.77 5.60 355.2 158.2 13.2 13.5

70.2 850 107.7 34.6 28.6 1.77 5.73 360.3 162.8 12.9 14.7

70.1 950 103.9 34.8 28.8 1.77 5.76 358.1 162.8 12.8 14.7

70.2 850 108.2 35.1 28.8 1.85 5.56 369.8 169.4 12.1 11.8

70.1 950 104.3 35.2 28.9 1.84 5.61 367.5 169.5 12.0 11.8

76.0 850 110.2 36.9 30.5 1.88 5.75 376.9 179.2 11.4 14.4

75.9 950 106.2 37.1 30.7 1.87 5.81 374.6 179.3 11.4 14.3

79.2 850 111.3 37.9 31.5 1.88 5.91 379.9 184.5 11.0 15.8

79.1 950 107.1 38.1 31.7 1.87 5.97 377.6 184.6 11.0 15.8

Heating data based on 70 °F EAT. See Correction Factors at end of section for different conditions

LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI

SubCooling is ± 5 °F; Superheat is ± 6 °F

3.0 1.1 2.7

4.5 2.1 4.8

6.0 3.3 7.5

3.0 1.2 2.8

4.5 2.2 5.1

6.0 3.4 7.9

3.0 1.3 2.9

4.5 2.3 5.3

6.0 3.6 8.3

3.0 1.3 3.0

4.5 2.4 5.5

6.0 3.7 8.6

3.0 1.4 3.2

4.5 2.5 5.8

6.0 3.9 9.1

3.0 1.5 3.4

4.5 2.7 6.2

6.0 4.2 9.7

3.0 1.6 3.6

4.5 2.9 6.6

6.0 4.5 10.3

Heating

WPD

25 6.0 4.6 10.5

Full Load, Heating

CT Models, Rev.: A Enertech Global

Section 12: Model 024 Performance Data: 2.0 Ton, Full Load Hydronic Heating

EWT Flow LWT ELT Flow LLT

HC HE COP

Discharge Suction Subcooling Superheat

°F GPM PSID FT °F °F GPM PSID FT °F MBtuh MBtuh kW W/W PSIG PSIG °F °F

22.6

85 2.0 4.6 88.9 11.6 6.9 1.37 2.48 308.5 70.9 10.6

12.0

22.9

95 2.0 4.6 98.8 11.3 6.0 1.55 2.14 350.1 72.9 11.7

11.0

23.4

110 1.9 4.4 113.7 11.1 4.6 1.90 1.71 420.7 75.1 14.2

10.6

26.1

85 2.0 4.6 89.1 12.3 7.5 1.41 2.56 321.7 78.7 14.4 9.5

26.6

95 2.0 4.6 99.0 12 6.5 1.60 2.20 365.1 80.9 15.4 8.5

27.4

110 1.9 4.4 113.9 11.8 5.1 1.96 1.76 438.8 83.3 18.0 8.2

26.8

85 2.0 4.6 89.2 12.5 7.7 1.40 2.62 317.6 80.6 13.7 9.3

27.2

95 2.0 4.6 99.1 12.3 6.9 1.59 2.27 360.5 82.8 14.8 8.3

27.8

110 1.9 4.4 114.0 12.1 5.4 1.95 1.82 433.2 85.3 17.4 8.0

27.3

85 2.0 4.6 89.2 12.5 7.8 1.38 2.65 313.6 82.2 10.4 8.9

27.7

95 2.0 4.6 99.1 12.2 6.8 1.57 2.28 355.9 84.5 11.3 7.9

28.1

110 1.9 4.4 114.0 12 5.4 1.92 1.83 427.7 87.1 13.6 7.6

33.3

85 2.0 4.6 91.0 17.9 13.0 1.45 3.62 333.7 92.6 12.4

8.9

33.8

95 2.0 4.6 100.9 17.6 12.0 1.65 3.13 378.8 95.2 12.9

7.9

34.7

110 1.9 4.4 115.7 17.2 10.3 2.02 2.50 455.1 98.1 15.1

7.8

34.5

85 2.0 4.6 91.1 18.3 13.4 1.44 3.72 329.4 94.8 11.7 8.9

34.9

95 2.0 4.6 101.0 17.9 12.3 1.64 3.20 373.9 97.4 12.3 8.0

35.6

110 1.9 4.4 115.9 17.6 10.7 2.01 2.57 449.3 100.4 14.4 7.9

35.4

85 2.0 4.6 91.1 18.2 13.4 1.42 3.76 325.3 96.8 8.3

8.6

35.7

95 2.0 4.6 101.0 17.9 12.4 1.61 3.26 369.2 99.5 8.6

7.7

36.3

110 1.9 4.4 115.8 17.5 10.7 1.98 2.59 443.6 102.5 10.5

7.6

40.7

85 2.0 4.6 92.7 23.2 18.1 1.49 4.56 345.0 106.6 10.5 9.3

41.3

95 2.0 4.6 102.6 22.7 16.9 1.69 3.94 391.6 109.6 10.6 8.4

42.2

110 1.9 4.4 117.4 22.3 15.2 2.08 3.14 470.6 112.9 12.6 8.5

42.3

85 2.0 4.6 92.9 23.7 18.6 1.49 4.66 340.6 109.2 9.9 9.5

42.8

95 2.0 4.6 102.7 23.2 17.5 1.68 4.05 386.6 112.2 10.0 8.6

43.5

110 1.9 4.4 117.6 22.8 15.7 2.07 3.23 464.6 115.6 11.9 8.8

43.6

85 2.0 4.6 92.9 23.6 18.6 1.46 4.74 336.3 111.4 6.3 9.3

44.0

95 2.0 4.6 102.7 23.1 17.4 1.66 4.08 381.7 114.5 6.2 8.4

44.6

110 1.9 4.4 117.6 22.7 15.7 2.04 3.26 458.7 118.0 7.7 8.6

49.1

85 2.0 4.6 93.8 26.4 21.2 1.53 5.06 354.5 123.8 9.7

9.5

49.7

95 2.0 4.6 103.6 25.8 19.9 1.74 4.35 402.3 127.2 9.4

8.7

50.7

110 1.9 4.4 118.4 25.3 18.0 2.13 3.48 483.5 131.1 11.4

9.0

51.1

85 2.0 4.6 94.0 26.9 21.7 1.52 5.19 350.0 126.8 9.0 9.9

51.5

95 2.0 4.6 103.8 26.4 20.5 1.73 4.47 397.2 130.3 8.8 9.1

52.3

110 1.9 4.4 118.6 25.9 18.7 2.12 3.58 477.3 134.2 10.6 9.4

52.5

85 2.0 4.6 93.9 26.8 21.7 1.50 5.24 345.6 129.4 5.4

9.8

53.0

95 2.0 4.6 103.8 26.3 20.5 1.70 4.53 392.2 133.0 5.0

9.0

53.6

110 1.9 4.4 118.6 25.8 18.7 2.09 3.62 471.3 137.0 6.4

9.4

58.0

85 2.0 4.6 94.5 28.6 23.2 1.57 5.34 362.3 141.3 9.4 10.7

58.7

95 2.0 4.6 104.3 28 21.9 1.78 4.61 411.2 145.2 9.0 9.9

59.7

110 1.9 4.4 119.2 27.5 20.0 2.19 3.68 494.1 149.6 11.1 10.4

60.1

85 2.0 4.6 94.7 29.2 23.9 1.56 5.49 357.7 144.7 8.8 11.3

60.7

95 2.0 4.6 104.5 28.6 22.6 1.77 4.74 406.0 148.7 8.4 10.5

61.5

110 1.9 4.4 119.4 28.1 20.7 2.17 3.80 487.8 153.2 10.3 11.1

61.8

85 2.0 4.6 94.7 29.1 23.8 1.54 5.54 353.2 147.7 5.1 11.3

62.2

95 2.0 4.6 104.5 28.5 22.6 1.74 4.80 400.9 151.8 4.5 10.5

62.9

110 1.9 4.4 119.3 28 20.7 2.14 3.83 481.7 156.4 5.9 11.1

66.6

85 2.0 4.6 95.5 31.4 25.9 1.61 5.72 369.2 156.2 9.2

13.6

67.3

95 2.0 4.6 105.3 30.8 24.6 1.83 4.93 419.0 160.6 8.6

12.8

68.4

110 1.9 4.4 120.1 30.2 22.5 2.25 3.93 503.5 165.4 10.9

13.5

69.0

85 2.0 4.6 95.7 32.1 26.6 1.61 5.84 364.5 160.0 8.5 14.4

69.6

95 2.0 4.6 105.5 31.4 25.2 1.82 5.06 413.7 164.4 8.0 13.6

70.4

110 1.9 4.4 120.3 30.8 23.2 2.23 4.05 497.1 169.4 10.1 14.4

70.9

85 2.0 4.6 95.7 32 26.6 1.58 5.94 359.9 163.3 4.9

14.5

71.3

95 2.0 4.6 105.4 31.3 25.2 1.79 5.12 408.5 167.8 4.1

13.7

72.0

110 1.9 4.4 120.2 30.7 23.2 2.20 4.09 490.8 172.9 5.6

14.5

75.5

85 2.0 4.6 96.3 33.9 28.2 1.66 5.99 375.4 171.3 9.2 16.8

76.2

95 2.0 4.6 106.1 33.2 26.8 1.88 5.18 426.1 176.0 8.5 16.0

77.3

110 1.9 4.4 120.9 32.6 24.7 2.31 4.14 512.0 181.4 11.0 17.0

78.0

85 2.0 4.6 96.5 34.6 29.0 1.65 6.15 370.6 175.4 8.6 17.8

78.7

95 2.0 4.6 106.3 33.9 27.5 1.87 5.31 420.6 180.3 7.9 17.0

79.5

110 1.9 4.4 121.1 33.3 25.5 2.29 4.26 505.4 185.8 10.2 18.0

80.1

85 2.0 4.6 96.5 34.5 28.9 1.63 6.20 365.9 179.0 4.9 18.0

80.5

95 2.0 4.6 106.3 33.8 27.5 1.84 5.38 415.3 184.0 3.9 17.2

81.3

110 1.9 4.4 121.0 33.1 25.4 2.26 4.29 499.1 189.6 5.6

18.3

LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

LLT is based on water only or 500 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI

SubCooling is ± 5 °F; Superheat is ± 6 °F

Source Water

Load Water

Heating

WPD

25 6.0 4.1 9.4 6.0

WPD

6.05.0 3.0 6.9

6.0 4.0 9.2

6.05.0 2.8 6.4

6.0

4.0 1.9 4.4

4.0 2.1 4.7

3.8 8.7

4.0 1.8 4.2

6.05.0 2.6 6.0

6.0 3.5 8.1

6.05.0 2.5 5.7

6.0 3.3

6.02.1

6.6

4.9

6.0

6.05.0 2.3 5.3

6.0 3.1 7.2

4.0 1.5 3.4

7.6

4.0 1.6 3.7

4.0 1.7 3.9

5.0

2.9

4.0 1.3 3.1

6.0

5.0 1.9 4.5

6.0 2.6 6.0

Enertech Global CT Models, Rev.: A

Section 12: Model 036 Performance Data: 3.0 Ton,

EWT Flow

LWT

Aiflow TC SC HR EER Discharge Suction Subcooling Superheat

°F GPM PSI FT °F CFM MBtuh MBtuh MBtuh Btuh/W PSIG PSIG °F °F

72.5 1250 42.4 28.5 0.67 49.1 1.95 21.7 243.9 135.5 27.1 12.2

72.9 1350 43.1 29.8 0.69 49.9 2.00 21.6 244.7 137.2 27.4 12.9

64.5 1250 42.9 28.8 0.67 49.1 1.83 23.4 222.7 134.8 22.1 13.0

64.7 1350 43.5 30.1 0.69 49.9 1.88 23.1 223.4 136.6 22.3 13.6

61.2 1250 43.0 28.9 0.67 49.1 1.79 24.0 215.0 134.6 20.3 13.1

61.4 1350 43.7 30.2 0.69 49.9 1.83 23.9 215.7 136.4 20.5 13.8

82.0 1250 40.8 27.9 0.68 48.1 2.13 19.2 281.0 137.5 27.0 10.1

82.4 1350 41.5 29.1 0.70 48.9 2.18 19.0 281.9 139.3 27.3 10.6

74.2 1250 41.3 28.2 0.68 48.1 1.99 20.8 256.6 136.9 21.8 10.8

74.4 1350 41.9 29.4 0.70 48.9 2.04 20.5 257.3 138.7 22.0 11.3

71.0 1250 41.4 28.2 0.68 48.1 1.95 21.2 247.7 136.7 19.9 11.0

71.2 1350 42.0 29.5 0.70 48.8 2.00 21.0 248.5 138.5 20.1 11.5

91.5 1250 39.1 27.2 0.70 47.0 2.32 16.9 320.5 139.6 26.5 8.1

91.9 1350 39.7 28.4 0.72 47.8 2.38 16.7 321.5 141.4 26.8 8.6

83.8 1250 39.6 27.5 0.69 47.0 2.17 18.2 292.6 139.0 21.4 8.8

84.1 1350 40.2 28.7 0.71 47.8 2.23 18.0 293.5 140.8 21.6 9.4

80.7 1250 39.7 27.5 0.69 46.9 2.12 18.7 282.6 138.7 19.4 9.0

80.9 1350 40.3 28.8 0.71 47.7 2.18 18.5 283.4 140.5 19.6 9.6

101.1 1250 37.3 26.3 0.71 46.0 2.54 14.7 364.8 141.3 25.9 7.2

101.4 1350 37.9 27.5 0.73 46.8 2.61 14.5 365.9 143.1 26.1 7.7

93.5 1250 37.7 26.6 0.71 45.8 2.38 15.8 333.0 140.6 21.2 7.9

93.7 1350

38.3 27.7 0.72 46.6 2.44 15.7 334.0 142.5 21.4 8.4

90.5 1250 37.8 26.7 0.71 45.7 2.32 16.3 321.6 140.4 19.3 8.0

90.7 1350 38.4 27.8 0.72 46.5 2.38 16.1 322.5 142.2 19.5 8.5

110.6 1250 35.3 25.3 0.72 44.9 2.81 12.6 415.1 142.9 25.1 6.9

110.9 1350 35.8 26.4 0.74 45.6 2.88 12.4 416.4 144.8 25.3 7.4

103.2 1250 35.7 25.5 0.71 44.7 2.63 13.6 378.9 142.3 20.7 7.6

103.4 1350 36.2 26.7 0.74 45.4 2.70 13.4 380.1 144.1 20.8 8.2

100.2 1250 35.8 25.6 0.72 44.6 2.57 13.9 365.9 142.0 18.9 7.8

100.4 1350 36.3 26.7 0.74 45.3 2.63 13.8 367.0 143.8 19.1 8.4

120.1 1250 33.1 24.2 0.73 43.8 3.14 10.5 471.0 145.0 24.3 7.1

120.4 1350 33.6 25.3 0.75 44.6 3.22 10.4 472.4 146.9 24.5 7.6

112.8 1250

33.4 24.5

0.73 43.4 2.94 11.4 430.0 144.3 19.6 7.9

113.0 1350 33.9 25.5 0.75 44.2 3.02 11.2 431.3 146.2 19.8 8.4

109.9 1250 33.5 24.5 0.73 43.3 2.87 11.7 415.2 144.1 17.9 7.9

110.1 1350 34.0 25.6 0.75 44.0 2.94 11.6 416.5 145.9 18.1 8.5

129.6 1250 30.8 23.1 0.75 42.7 3.49 8.8 529.3 147.1 24.5 7.6

129.9 1350 31.2 24.1 0.77 43.4 3.58 8.7 531.0 149.0 24.8 8.1

122.5 1250 31.1 23.3 0.75 42.3 3.27 9.5 483.2 146.4 18.6 8.3

122.7 1350 31.6 24.3 0.77 43.0 3.35 9.4 484.7 148.3 18.9 8.9

119.6 1250 31.2 23.4 0.75 42.1 3.19 9.8 466.6 146.1 16.7 8.4

119.8 1350 31.7 24.4 0.77 42.9 3.27 9.7 468.1 148.0 16.9 9.1

Cooling data based on 80/67 °F EAT. See Correction Factors at end of section for different conditions LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F

Cooling

WPD

S/T kW

4.5 1.1 2.6

7.0 2.1 4.8

9.0 3.1 7.0

4.5 1.0 2.4

7.0 2.0 4.5

9.0 2.9 6.6

4.5 1.0 2.3

7.0 1.8 4.2

9.0 2.7 6.2

4.5 0.9 2.2

7.0 1.7 4.0

9.0 2.6 5.9

4.5 0.9 2.1

7.0 1.7 3.8

9.0 2.4 5.7

100

4.5 0.8 1.9

7.0 1.6 3.6

9.0 2.3 5.3

110

4.5 0.8 1.8

7.0 1.5 3.3

9.0 2.1 4.9

Full Load, Cooling

CT Models, Rev.: A Enertech Global

Section 12: Model 036 Performance Data: 3.0 Ton,

EWT Flow

LWT

Aiflow LAT HC HE COP Discharge Suction Subcooling Superheat

°F GPM PSI FT °F CFM °F MBtuh MBtuh kW W/W PSIG PSIG °F °F

20.6 1200 90.7 26.8 19.2 2.24 3.51 295.3 66.3 23.1 8.3

20.5 1350 88.6 27.1 19.5 2.24 3.55 295.3 66.1 23.1 8.4

20.3 1200 92.4 29.0 21.2 2.29 3.71 304.6 68.8 28.2 7.9

20.1 1350 90.1 29.3 21.5 2.29 3.75 304.6 68.7 28.2 8.0

23.3 1200 93.5 30.5 22.6 2.31 3.87 308.2 74.9 25.7 6.7

23.3 1350 91.1 30.8 22.9 2.31 3.91 308.2 74.8 25.7 6.7

24.8 1200 93.5 30.5 22.7 2.30 3.89 307.4 77.4 23.5 5.6

24.8 1350 91.1 30.7 22.9 2.30 3.91 307.4 77.3 23.5 5.7

28.7 1200 95.2 32.6 24.6 2.34 4.08 314.9 83.7 25.0 6.3

28.6 1350 92.6 32.9 24.9 2.34 4.12 314.9 83.5 25.0 6.4

32.3 1200 96.5 34.3 26.2 2.36 4.26 318.7 91.1 22.2 5.7

32.2 1350 93.7 34.6 26.5 2.36 4.30 318.7 90.9 22.2 5.8

34.0 1200 96.5 34.3 26.3 2.34 4.30 317.8 94.2 19.8 4.7

33.9 1350 93.7 34.5 26.5 2.34 4.32 317.8 94.0 19.8 4.8

37.1 1200 98.1 36.4 28.2 2.40 4.44 326.5 99.0 22.2 5.7

36.9 1350 95.2 36.7 28.5 2.40 4.48 326.5 98.8 22.2 5.8

41.2 1200 99.5 38.2 29.9 2.42 4.63 330.4 107.9 19.1 5.7

41.1 1350 96.4 38.5 30.2 2.42 4.66 330.4 107.6 19.1 5.8

43.1 1200 99.5 38.2 30.0 2.40 4.66 329.5 111.5 16.5 4.9

43.1 1350 96.4 38.5 30.3 2.40 4.70 329.5 111.2 16.5 5.0

44.9 1200 102.0 41.5 33.0 2.50 4.86 345.7 117.2 21.3 5.1

44.7 1350 98.7 41.9 33.4 2.50 4.91 345.7 116.9 21.3 5.2

49.7 1200 103.6 43.6 35.0 2.52 5.07 349.9 127.6 18.0 5.8

49.6 1350 100.2 44.0 35.4 2.52 5.12 349.9 127.3 18.0 6.0

52.0 1200 103.6 43.6 35.0 2.51 5.09 348.9 131.8 15.2 5.2

51.9 1350 100.1 43.9 35.3 2.51 5.13 348.9 131.5 15.2 5.3

52.6 1200 106.2 46.9 37.9 2.64 5.21 368.3 136.4 21.1 5.2

52.5 1350 102.4 47.3 38.3 2.64 5.25 368.3 136.1 21.1 5.3

58.1 1200 108.1 49.4 40.3 2.66 5.44 372.6 148.6 17.5 6.6

58.0 1350 104.2 49.8 40.7 2.66 5.49 372.6 148.2 17.5 6.8

60.8 1200 108.0 49.3 40.3 2.65 5.45 371.6 153.5 14.7 6.0

60.7 1350 104.1 49.7 40.7 2.65 5.50 371.6 153.2 14.7 6.1

60.8 1200 109.7 51.4 41.9 2.78 5.42 388.7 154.9 20.0 6.2

60.6 1350 105.5 51.8 42.3 2.78 5.46 388.7 154.6 20.0 6.3

66.9 1200 111.7 54.0 44.4 2.80 5.65 393.3 168.7 16.2 8.2

66.8 1350 107.4 54.5 44.9 2.80 5.70 393.3 168.3 16.2 8.4

69.8 1200 111.6 53.9 44.4 2.78 5.68 392.2 174.3 13.2 7.6

69.7 1350 107.3 54.4 44.9 2.78 5.73 392.2 173.9 13.2 7.8

69.0 1200 113.1 55.9 45.9 2.92 5.61 410.5 173.9 19.1 7.5

68.7 1350 108.7 56.4 46.4 2.92 5.66 410.5 173.5 19.1 7.6

75.6 1200 115.4 58.8 48.8 2.94 5.86 415.3 189.4 15.1 10.1

75.5 1350 110.7 59.3 49.3 2.94 5.91 415.3 188.9 15.1 10.2

78.8 1200 115.3 58.7 48.7 2.93 5.87 414.2 195.7 12.0 9.5

78.7 1350 110.6 59.2 49.2 2.93 5.92 414.2 195.2 12.0 9.7

Heating data based on 70 °F EAT. See Correction Factors at end of section for different conditions

LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI

SubCooling is ± 5 °F; Superheat is ± 6 °F

Heating

WPD

25 9.0 4.1 9.4

4.5 1.4 3.2

7.0 2.8 6.6

9.0 4.0 9.1

4.5 1.3 2.9

7.0 2.6 6.0

9.0 3.6 8.3

4.5 1.2 2.7

7.0 2.4 5.5

9.0 3.3 7.6

4.5 1.1 2.5

7.0 2.2 5.0

9.0 3.0 7.0

4.5 1.0 2.3

7.0 2.0 4.7

9.0 2.8 6.5

4.5 0.9 2.1

7.0 1.9 4.4

9.0 2.6 6.1

4.5 0.9 2.0

7.0 1.8 4.1

9.0 2.4 5.6

Full Load, Heating

Enertech Global CT Models, Rev.: A

EWT Flow

LWT

ELT Flow

LLT

HC HE COP Discharge Suction Subcooling Superheat

°F GPM PSID FT °F °F GPM PSID FT °F MBtuh MBtuh kW W/W PSIG PSIG °F °F

21.0

85 3.3 7.6 90.5 24.8 17.6 2.11 3.44 333.6 69.4 8.8

7.3

21.4

95 3.3 7.6 100.3 24 15.8 2.39 2.94 376.0 69.9 9.9

7.2

22.0

110 3.3 7.6 115.1 22.8 13.0 2.88 2.32 446.2 71.9 9.4

6.4

21.6

85 3.4 7.9 90.8 25.9 18.3 2.24 3.39 355.4 72.3 11.1 7.6

22.4

95 3.4 7.9 100.6 25.1 16.5 2.53 2.91 400.5 72.8 11.9 7.5

23.8

110 3.4 7.9 115.3 23.9 13.5 3.05 2.30 475.3 74.9 11.6 6.7

24.2

85 3.4 7.9 91.0 27 19.6 2.17 3.65 344.3 76.4 10.3 6.9

24.8

95 3.4 7.9 100.8 26.1 17.7 2.45 3.12 388.0 76.9 11.3 6.8

25.6

110 3.4 7.9 115.5 24.9 14.8 2.95 2.47 460.5 79.1 10.9

6.1

25.4

85 3.4 7.9 91.1 27.5 20.2 2.13 3.78 339.1 79.4 9.8 5.5

25.8

95 3.4 7.9 100.9 26.7 18.5 2.41 3.25 382.1 79.9 10.8 5.4

26.5

110 3.4 7.9 115.6 25.3 15.4 2.91 2.55 453.6 82.2 10.4 4.7

30.1

85 3.4 7.9 91.5 29.3 21.5 2.28 3.77 364.0 88.3 9.8

6.7

31.0

95 3.4 7.9 101.3 28.4 19.6 2.57 3.24 410.2 88.9 10.3

6.7

32.5

110 3.4 7.9 116.0 27 16.4 3.10 2.55 486.8 91.4 9.9

6.0

33.2

85 3.4 7.9 91.8 30.5 23.0 2.20 4.06 352.7 93.2 9.0 6.5

33.8

95 3.4 7.9 101.6 29.6 21.1 2.49 3.48 397.4 93.9 9.7 6.5

34.7

110 3.4 7.9 116.2 28.1 17.9 3.00 2.75 471.7 96.6 9.2 5.9

34.6

85 3.4 7.9 91.9 31.1 23.7 2.17 4.20 347.4 96.9 8.5

5.2

35.0

95 3.4

7.9 101.7 30.2 21.8 2.45 3.61 391.4 97.5 9.3

5.2

35.7

110 3.4 7.9 116.4 28.7 18.6 2.95 2.85 464.6 100.4 8.7

4.6

38.7

85 3.4 7.9 92.2 32.6 24.7 2.32 4.12 372.4 104.0 8.6 7.2

39.6

95 3.4 7.9 102.0 31.7 22.8 2.62 3.55 419.6 104.7 8.9 7.3

41.1

110 3.4 7.9 116.7 30.1 19.4 3.15 2.80 498.0 107.7 8.6 6.8

42.2

85 3.4 7.9 92.6 34 26.4 2.24 4.45 360.8 109.8 7.9 7.6

42.8

95 3.4 7.9 102.3 33 24.4 2.53 3.82 406.5 110.6 8.4 7.7

43.8

110 3.4 7.9 117.0 31.4 21.0 3.05 3.02 482.5 113.8 7.7 7.3

43.8

85 3.4 7.9 92.7 34.7 27.2 2.21 4.60 355.3 114.1 7.4 6.4

44.2

95 3.4 7.9 102.5 33.6 25.1 2.49 3.95 400.4 114.9 8.0 6.5

45.0

110 3.4 7.9 117.1

32 21.8

3.00 3.13 475.2 118.2 7.2 6.0

47.0

85 3.5 8.1 93.1 36.5 28.4 2.36 4.53 381.2 120.1 8.9

8.3

47.9

95 3.5 8.1 102.9 35.4 26.3 2.67 3.89 429.5 120.9 9.2

8.5

49.6

110 3.5 8.1 117.5 33.7 22.7 3.22 3.07 509.8 124.4 9.1

8.1

51.1

85 3.5 8.1 93.4 38 30.2 2.29 4.86 369.4 126.8 8.3 9.3

51.7

95 3.5 8.1 103.2 36.9 28.1 2.58 4.19 416.2 127.7 8.6 9.5

52.8

110 3.5 8.1 117.8 35.1 24.5 3.11 3.31 494.0 131.4 8.1 9.2

52.9

85 3.5 8.1 93.6 38.8 31.1 2.25 5.05 363.8 131.8 7.8

8.1

53.4

95 3.5 8.1 103.4 37.6 28.9 2.54 4.34 409.9 132.7 8.2

8.3

54.2

110 3.5 8.1 118.0 35.8 25.4 3.06 3.43 486.5 136.5 7.6

8.0

55.3

85 3.6 8.3 94.0 40.3 32.1 2.41 4.90 389.4 135.6

9.7 10.3

56.3

95 3.6 8.3 103.7 39.1 29.8 2.72 4.21 438.7 136.5 9.9 10.6

58.1

110 3.6 8.3 118.2 37.1 25.9 3.28 3.31 520.7 140.4 10.2 10.3

60.0

85 3.6 8.3 94.3 42 34.0 2.33 5.28 377.3 143.2 9.0 11.8

60.7

95 3.6 8.3 104.0 40.7 31.7 2.64 4.52 425.1 144.2 9.4 12.0

61.8

110 3.6 8.3 118.6 38.7 27.8 3.18 3.57 504.5 148.4 9.2 11.9

62.0

85 3.6 8.3 94.5 42.8 35.0 2.30 5.45 371.6 148.8 8.6 10.7

62.5

95 3.6 8.3 104.2 41.5 32.7 2.59 4.70 418.7 149.9 8.9 10.9

63.4

110 3.6 8.3 118.8 39.4 28.7 3.13 3.69 496.9 154.2 8.6 10.8

64.0

85 3.6 8.3 94.6 43.3 34.9 2.47 5.14 395.8 149.8 9.7

13.4

65.1

95 3.6 8.3 104.3 42 32.5 2.79 4.41 446.0 150.8 9.9

13.6

67.0

110

3.6 8.3 118.9 39.9 28.4 3.36 3.48 529.3 155.1 10.5

13.5

69.1

85 3.6 8.3 95.0 45.1 36.9 2.39 5.53 383.5 158.2 9.1 15.3

69.8

95 3.6 8.3 104.7 43.7 34.5 2.70 4.74 432.1 159.3 9.4 15.6

71.0

110 3.6 8.3 119.2 41.6 30.5 3.25 3.75 512.9 163.9 9.4 15.6

71.3

85 3.6 8.3 95.2 46 38.0 2.35 5.74 377.7 164.4 8.7

14.2

71.8

95 3.6 8.3 104.9 44.6 35.6 2.65 4.93 425.6 165.5 8.9

14.6

72.8

110 3.6 8.3 119.4 42.4 31.5 3.20 3.88 505.1 170.3 8.7

14.5

72.7

85 3.6 8.3 95.3 46.3 37.7 2.52 5.38 402.0 163.8 9.9 16.7

73.9

95 3.6 8.3 105.0 44.9 35.2 2.85 4.62 453.0 164.9 10.2 17.1

75.8

110 3.6 8.3 119.5 42.6 30.9 3.44 3.63 537.6 169.6 11.0 17.1

78.2

3.6 8.3 95.7 48.2

39.9 2.44 5.79 389.5 173.0 9.4 19.1

79.0

95 3.6 8.3 105.4 46.7 37.3 2.76 4.96 438.9 174.2 9.6 19.5

80.3

110 3.6 8.3 119.9 44.4 33.0 3.33 3.91 520.9 179.2 9.8 19.6

80.6

85 3.6 8.3 95.9 49.1 40.9 2.40 6.00 383.6 179.8 8.9 18.1

81.2

95 3.6 8.3 105.6 47.6 38.4 2.71 5.15 432.3 181.0 9.2 18.5

82.2

110 3.6 8.3 120.1 45.3 34.1 3.27 4.06 513.0 186.2 9.2

18.6

LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier LLT is based on water only or 500 multiplier Performance data accurate within ± 10% Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F

4.5 0.6 1.5

9.0

7.0 1.5 3.5

9.0 2.3 5.3

4.5 0.7 1.6

6.4

4.5 0.7 1.7

4.5 0.8 1.8

7.0

2.5

9.07.0 1.8 4.1

9.0 2.7 6.3

9.01.6

5.8

3.8

9.0

9.07.0 1.8 4.2

9.0 2.8

4.5 0.8 1.8

9.07.0 1.9 4.4

9.0 2.9 6.7

4.5 0.9 2.1

4.5 1.0 2.3

3.3 7.5

9.07.0 2.1 4.9

9.0

9.07.0 2.4 5.5

9.0 3.6 8.3

Source Water

Load Water

Heating

WPD

25 9.0 3.5 8.2 9.0

WPD

Section 12: Model 036C Performance Data: 3.0 Ton, Full Load Hydronic Heating

CT Models, Rev.: A Enertech Global

Section 12: Model 048 Performance Data: 4.0 Ton,

EWT Flow

LWT

Aiflow TC SC HR EER Discharge Suction Subcooling Superheat

°F GPM PSI FT °F CFM MBtuh MBtuh MBtuh Btuh/W PSIG PSIG °F °F

71.8 1600 54.4 37.0 0.68 63.3 2.60 20.9 236.5 132.2 19.1 12.2

72.0 1750 54.7 38.2 0.70 63.9 2.71 20.2 237.2 134.5 19.0 12.4

64.6 1600 55.5 37.3 0.67 63.9 2.46 22.6 219.7 131.5 16.0 12.8

64.8 1750 55.8 38.5 0.69 64.6 2.57 21.7 220.4 133.7 16.0 13.1

61.0 1600 55.9 37.6 0.67 64.1 2.41 23.2 211.7 130.7 14.8 13.7

61.1 1750 56.2 38.8 0.69 64.8 2.52 22.3 212.4 132.9 14.7 14.0

81.3 1600 52.2 36.2 0.69 61.9 2.83 18.4 272.8 134.4 17.6 11.1

81.5 1750 52.5 37.3 0.71 62.6 2.95 17.8 273.7 136.6 17.5 11.4

74.3 1600 53.3 36.5 0.68 62.4 2.68 19.9 253.4 133.6 14.6 11.7

74.5 1750 53.6 37.6 0.70 63.2 2.80 19.1 254.3 135.9 14.5 12.0

70.8 1600 53.6 36.7 0.68 62.6 2.63 20.4 244.2 132.9 13.3 12.6

70.9 1750 53.9 37.9 0.70 63.2 2.74 19.7 245.0 135.1 13.2 12.9

90.8 1600 49.9 35.3 0.71 60.4 3.09 16.1 311.1 136.5 15.9 10.1

91.0 1750 50.2 36.4 0.73 61.2 3.22 15.6 312.1 138.8 15.8 10.4

84.0 1600 51.0 35.6 0.70 61.0 2.92 17.5 289.1 135.7 13.2 10.8

84.1 1750 51.3 36.7 0.72 61.7 3.05 16.8 290.0 138.0 13.0 11.1

80.5 1600 51.3 35.9 0.70 61.1 2.86 17.9 278.5 135.0 12.0 11.7

80.6 1750 51.6 37.0 0.72 61.8 2.99 17.3 279.4 137.2 11.7 12.0

100.3 1600 47.6 34.1 0.72 59.1 3.37 14.1 353.1 138.9 15.0 9.3

100.5 1750 47.8 35.1 0.73 59.8 3.52 13.6 354.3 141.2 14.7 9.6

93.6 1600 48.5 34.4 0.71 59.4 3.19 15.2 328.1 138.1 12.5 10.0

93.8 1750 48.8 35.4 0.73 60.2 3.33 14.7 329.2 140.4 12.4 10.3

90.2 1600 48.9 34.6 0.71 59.5 3.12 15.7 316.1 137.3 11.6 10.9

90.4 1750 49.2 35.7 0.73 60.3 3.26 15.1 317.2 139.6 11.3 11.2

109.8 1600 45.0 32.8 0.73 57.7 3.71 12.1 400.2 141.2 14.2 8.9

110.1 1750 45.3 33.8 0.75 58.5 3.87 11.7 401.5 143.6 13.8 9.1

103.3 1600 46.0 33.1 0.72 58.0 3.51 13.1 371.8 140.4 12.2 9.6

103.4 1750 46.2 34.1 0.74 58.7 3.67 12.6 373.1 142.7 12.0 9.9

100.0 1600 46.3 33.3 0.72 58.0 3.44 13.5 358.3 139.6 11.5 10.5

100.1 1750 46.5 34.3 0.74 58.7 3.59 13.0 359.5 141.9 11.2 10.7

119.4 1600 42.3 31.7 0.75 56.4 4.12 10.3 452.2 143.1 13.3 9.1

119.7 1750 42.6 32.7 0.77 57.3 4.30 9.9 453.7 145.5 13.0 9.3

112.9 1600 43.2 32.0 0.74 56.5 3.90 11.1 420.1 142.3 11.5 9.8

113.2 1750 43.5 33.0 0.76 57.4 4.08 10.7 421.5 144.7 11.1 10.0

109.7 1600 43.5 32.2 0.74 56.5 3.82 11.4 404.8 141.5 11.0 10.6

109.8 1750 43.7 33.2 0.76 57.3 3.99 11.0 406.1 143.9 10.6 10.9

129.0 1600 39.6 30.7 0.78 55.2 4.56 8.7 506.2 145.0 13.3 9.4

129.2 1750 39.8 31.6 0.79 56.0 4.76 8.4 507.9 147.4 12.9 9.7

122.6 1600 40.4 31.0 0.77 55.1 4.32 9.4 470.3 144.1 10.8 10.1

122.8 1750 40.6 31.9 0.79 56.0 4.51 9.0 471.8 146.6 10.4 10.4

119.5 1600 40.6 31.2 0.77 55.0 4.23 9.6 453.2 143.3 10.2 11.0

119.6 1750 40.9 32.1 0.78 56.0 4.42 9.3 454.6 145.7 9.7 11.3

Cooling data based on 80/67 °F EAT. See Correction Factors at end of section for different conditions

LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI

SubCooling is ± 5 °F; Superheat is ± 6 °F

Cooling

WPD

S/T kW

6.0 1.7 4.0

9.0 3.4 7.8

12.0 4.7 10.7

6.0 1.7 3.9

9.0 3.3 7.5

12.0 4.5 10.4

6.0 1.6 3.7

9.0 3.1 7.2

12.0 4.3 10.0

6.0 1.5 3.4

9.0 2.9 6.7

12.0 4.0 9.2

6.0 1.4 3.1

9.0 2.6 6.1

12.0 3.7 8.4

100

6.0 1.3 3.0

9.0 2.5 5.8

12.0 3.5 8.0

110

6.0 1.2 2.8

9.0 2.4 5.5

12.0 3.3 7.6

Full Load, Cooling

Enertech Global CT Models, Rev.: A

Section 12: Model 048 Performance Data: 4.0 Ton,

EWT Flow

LWT

Aiflow LAT HC HE COP Discharge Suction Subcooling Superheat

°F GPM PSI FT °F CFM °F MBtuh MBtuh kW W/W PSIG PSIG °F °F

20.4 1500 92.8 37.0 26.6 3.06 3.54 295.2 66.6 13.4 7.7

20.2 1700 90.8 38.1 27.7 3.05 3.66 294.2 66.5 13.2 7.7

21.1 1500 92.3 36.2 25.8 3.04 3.49 292.7 67.9 17.2 7.9

20.7 1700 90.3 37.3 27.0 3.03 3.61 291.8 67.8 17.0 8.0

23.8 1500 93.2 37.6 27.1 3.07 3.59 297.8 72.4 15.9 7.4

23.5 1700 91.1 38.8 28.3 3.07 3.70 296.9 72.2 15.7 7.4

25.2 1500 93.7 38.4 27.9 3.09 3.64 300.1 74.8 12.7 7.0

25.0 1700 91.6 39.6 29.1 3.08 3.77 299.2 74.7 12.5 7.0

29.6 1500 95.3 41.0 30.3 3.15 3.81 309.2 82.2 15.0 7.1

29.1 1700 93.0 42.3 31.6 3.15 3.94 308.2 82.1 14.8 7.2

32.7 1500 96.3 42.6 31.7 3.19 3.91 314.5 87.6 13.3 7.3

32.4 1700 93.9 43.9 33.0 3.18 4.05 313.5 87.4 13.1 7.4

34.4 1500 96.9 43.5 32.6 3.20 3.98 317.0 90.6 9.9 7.2

34.2 1700 94.5 44.9 34.0 3.20 4.11 316.0 90.4 9.7 7.3

38.1 1500 98.3 45.9 34.7 3.27 4.11 325.6 96.7 12.8 7.4

37.6 1700 95.8 47.3 36.2 3.26 4.25 324.6 96.5 12.6 7.4

41.7 1500 99.4 47.6 36.3 3.31 4.21 331.2 103.0 11.0 8.5

41.3 1700 96.7 49.1 37.8 3.30 4.36 330.2 102.8 10.8 8.5

43.6 1500 100.0 48.6 37.3 3.32 4.29 333.8 106.5 7.2 8.6

43.3 1700 97.3 50.1 38.8 3.32 4.42 332.8 106.4 7.0 8.7

46.8 1500 100.7 49.8 38.3 3.38 4.32 339.5 111.8 11.7 8.2

46.3 1700 98.0 51.4 39.9 3.37 4.47 338.5 111.7 11.6 8.2

50.8 1500 102.0 51.8 40.1 3.42 4.44 345.4 119.1 9.8 10.0

50.4 1700 99.1 53.4 41.8 3.41 4.59 344.4 118.9 9.6 10.0

52.9 1500 102.6 52.8 41.1 3.43 4.51 348.1 123.2 5.9 10.6

52.6 1700 99.7 54.5 42.8 3.43 4.66 347.0 123.0 5.7 10.6

55.6 1500 103.2 53.8 41.9 3.50 4.50 353.5 127.5 11.7 9.4

55.0 1700 100.2 55.5 43.6 3.49 4.66 352.4 127.3 11.4 9.4

60.0 1500 104.5 55.9 43.8 3.54 4.63 359.6 135.8 9.5 11.9

59.6 1700 101.4 57.6 45.6 3.53 4.78 358.5 135.6 9.4 11.9

62.3 1500 105.2 57.0 44.9 3.55 4.71 362.4 140.5 5.5 12.8

62.0 1700 102.0 58.8 46.7 3.55 4.85 361.3 140.3 5.4 12.7

64.2 1500 106.2 58.6 46.1 3.65 4.71 369.9 143.4 11.7 11.0

63.5 1700 102.9 60.4 48.0 3.64 4.86 368.8 143.2 11.5 11.0

69.0 1500 107.5 60.8 48.2 3.69 4.83 376.3 152.8 9.4 14.1

68.5 1700 104.2 62.7 50.1 3.68 4.99 375.2 152.5 9.3 14.1

71.5 1500 108.3 62.1 49.4 3.71 4.91 379.3 158.0 5.3 15.3

71.2 1700 104.9 64.0 51.4 3.70 5.07 378.1 157.8 5.1 15.3

72.7 1500 109.1 63.3 50.3 3.80 4.88 386.3 159.5 11.9 12.8

72.0 1700 105.6 65.3 52.4 3.79 5.05 385.1 159.2 11.8 12.9

77.9 1500 110.6 65.8 52.7 3.85 5.01 393.1 169.9 9.7 16.6

77.5 1700 106.9 67.8 54.7 3.84 5.17 391.8 169.6 9.5 16.6

80.7 1500 111.4 67.1 53.9 3.87 5.08 396.1 175.8 5.3 18.0

80.4 1700 107.7 69.2 56.0 3.86 5.25 394.9 175.5 5.1 18.0

Heating data based on 70 °F EAT. See Correction Factors at end of section for different conditions

LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI

SubCooling is ± 5 °F; Superheat is ± 6 °F

Heating

WPD

25 12.0 5.7 13.1

6.0 1.8 4.2

9.0 3.5 8.2

12.0 5.5 12.7

6.0 1.7 4.0

9.0 3.4 7.8

12.0 5.3 12.2

6.0 1.7 3.8

9.0 3.2 7.5

12.0 5.1 11.7

6.0 1.6 3.6

9.0 3.0 7.0

12.0 4.7 11.0

6.0 1.4 3.3

9.0 2.8 6.5

12.0 4.4 10.2

6.0 1.3 3.1

9.0 2.6 6.0

12.0 4.1 9.4

6.0 1.2 2.8

9.0 2.4 5.5

12.0 3.7 8.5

Full Load, Heating

CT Models, Rev.: A Enertech Global

EWT Flow

LWT

ELT Flow

LLT

HC HE COP Discharge Suction Subcooling Superheat

°F GPM PSID FT °F °F GPM PSID FT °F MBtuh MBtuh kW W/W PSIG PSIG °F °F

21.1

85 4.0 9.3 90.5 32.7 22.9 2.86 3.35 330.8 69.1 8.3

7.5

21.3

95 3.6 8.3 100.4 32.4 21.4 3.23 2.94 373.5 71.5 8.2

6.1

21.8

110 3.6 8.3 115.3 31.8 18.4 3.93 2.37 449.4 73.6 9.6

5.3

22.6

85 4.0 9.3 90.3 31.9 21.5 3.04 3.08 355.6 69.9 9.8 7.9

23.2

95 3.6 8.3 100.3 31.5 19.8 3.44 2.68 401.4 72.3 9.2 6.5

24.3

110 3.6 8.3 115.2 31 16.7 4.18 2.17 483.1 74.4 10.8 5.7

24.4

85 4.0 9.3 90.8 34.5 24.5 2.93 3.45 342.1 73.8 8.7 7.7

24.8

95 3.6 8.3 100.7 34.1 22.8 3.32 3.01 386.2 76.3 8.4 6.4

25.5

110 3.6 8.3 115.6 33.5 19.7 4.04 2.43 464.7 78.6 9.8

5.5

25.6

85 4.0 9.3 90.9 35.5 25.7 2.87 3.63 336.2 75.7 8.5 7.5

25.9

95 3.6 8.3 100.9 35.1 24.0 3.25 3.17 379.5 78.3 8.3 6.2

26.4

110 3.6 8.3 115.8 34.5 21.0 3.95 2.56 456.7 80.6 9.7 5.4

31.2

85 4.0 9.3 91.0 36.2 25.6 3.10 3.42 364.1 83.5 8.2

8.0

31.8

95 3.6 8.3 101.0 35.8 23.9 3.50 3.00 411.1 86.3 7.3

6.7

32.9

110 3.6 8.3 115.9 35.2 20.7 4.26 2.42 494.7 88.9 9.0

6.0

33.4

85 4.0 9.3 91.5 39.2 29.0 2.99 3.84 350.3 88.2 7.3 8.5

33.7

95 3.6 8.3 101.5 38.8 27.3 3.38 3.36 395.4 91.2 6.6 7.2

34.5

110 3.6 8.3 116.4 38.1 24.1 4.11 2.72 475.9 93.9 7.9 6.6

34.8

85 4.0 9.3 91.7 40.3 30.3 2.93 4.03 344.3 90.4 7.0

8.6

35.1

95 3.6

8.3 101.7 39.9 28.6 3.31 3.53 388.7 93.5 6.5

7.3

35.6

110 3.6 8.3 116.5 39.2 25.4 4.03 2.85 467.7 96.2 7.7

6.7

39.8

85 4.0 9.3 91.8 40.5 29.7 3.16 3.76 372.2 97.4 6.8 9.0

40.4

95 3.6 8.3 101.7 40.1 27.9 3.57 3.29 420.2 100.7 5.7 7.7

41.5

110 3.6 8.3 116.6 39.4 24.6 4.34 2.66 505.6 103.6 7.4 7.1

42.3

85 4.0 9.3 92.3 43.8 33.4 3.05 4.21 358.1 102.8 5.9 10.2

42.8

95 3.6 8.3 102.2 43.3 31.5 3.45 3.68 404.2 106.3 5.0 9.0

43.5

110 3.6 8.3 117.1 42.6 28.3 4.19 2.98 486.4 109.4 6.2 8.5

44.0

85 4.0 9.3 92.5 45.1 34.9 2.98 4.44 351.9 105.4 5.8 10.7

44.3

95 3.6 8.3 102.4 44.6 33.1 3.38 3.87 397.3 109.0 4.9 9.4

44.9

110 3.6 8.3 117.3

43.9 29.9

4.11 3.13 478.1 112.2 6.0 8.9

48.4

85 4.0 9.3 92.5 44.9 33.9 3.21 4.10 380.4 111.3 6.4

10.3

49.0

95 3.6 8.3 102.4 44.4 32.0 3.63 3.58 429.5 115.1 5.1

9.0

50.1

110 3.6 8.3 117.3 43.7 28.7 4.41 2.90 516.8 118.4 7.0

8.6

51.3

85 4.0 9.3 93.1 48.5 37.9 3.10 4.59 365.9 117.5 5.5 12.3

51.7

95 3.6 8.3 103.0 48 36.1 3.50 4.02 413.1 121.5 4.4 11.0

52.5

110 3.6 8.3 117.9 47.2 32.7 4.26 3.25 497.1 125.1 5.7 10.7

53.2

85 4.0 9.3 93.3 50 39.7 3.03 4.84 359.7 120.5 5.4

13.0

53.5

95 3.6 8.3 103.3 49.5 37.8 3.43 4.23 406.0 124.6 4.3

11.7

54.1

110 3.6 8.3 118.1 48.6 34.4 4.17 3.42 488.6 128.2 5.6

11.4

56.9

85 4.0 9.3 93.2 49.1 38.0 3.26 4.41 387.5 125.9

6.4 11.8

57.6

95 3.6 8.3 103.1 48.6 36.0 3.69 3.86 437.4 130.2 5.0 10.6

58.8

110 3.6 8.3 118.0 47.8 32.5 4.49 3.12 526.4 134.0 7.2 10.3

60.3

85 4.0 9.3 93.9 53.1 42.4 3.15 4.94 372.7 132.9 5.5 14.5

60.7

95 3.6 8.3 103.8 52.6 40.5 3.56 4.33 420.8 137.5 4.3 13.3

61.5

110 3.6 8.3 118.6 51.7 36.9 4.33 3.50 506.4 141.5 5.8 13.0

62.4

85 4.0 9.3 94.1 54.7 44.2 3.08 5.20 366.3 136.3 5.4 15.4

62.7

95 3.6 8.3 104.0 54.2 42.3 3.49 4.55 413.6 140.9 4.2 14.2

63.4

110 3.6 8.3 118.9 53.2 38.7 4.24 3.68 497.7 145.0 5.6 14.0

65.7

85 4.0 9.3 93.8 53 41.7 3.32 4.68 392.4 141.7 6.1

13.7

66.4

95 3.6 8.3 103.7 52.4 39.6 3.76 4.08 443.0 146.5 4.6

12.5

67.7

110

3.6 8.3 118.6 51.5 35.9 4.57 3.30 533.1 150.8 7.0

12.3

69.4

85 4.0 9.3 94.6 57.3 46.3 3.21 5.23 377.5 149.6 5.3 17.0

69.9

95 3.6 8.3 104.5 56.7 44.3 3.63 4.58 426.2 154.7 3.9 15.8

70.7

110 3.6 8.3 119.3 55.7 40.6 4.42 3.69 512.8 159.2 5.6 15.7

71.7

85 4.0 9.3 94.8 59 48.3 3.14 5.51 371.0 153.4 5.2

18.2

72.0

95 3.6 8.3 104.7 58.4 46.3 3.56 4.81 418.9 158.6 3.9

17.0

72.7

110 3.6 8.3 119.6 57.4 42.6 4.33 3.89 504.0 163.2 5.4

16.9

74.5

85 4.0 9.3 94.5 56.7 45.1 3.39 4.90 396.9 157.7 6.0 15.8

75.2

95 3.6 8.3 104.4 56.1 43.0 3.83 4.29 448.1 163.1 4.5 14.6

76.5

110 3.6 8.3 119.2 55.2 39.3 4.66 3.47 539.2 167.9 7.1 14.5

78.5

4.0 9.3 95.2 61.3

50.1 3.27 5.49 381.8 166.6 5.2 19.8

79.0

95 3.6 8.3 105.1 60.7 48.1 3.70 4.81 431.1 172.3 3.8 18.5

79.9

110 3.6 8.3 120.0 59.7 44.3 4.50 3.89 518.7 177.3 5.6 18.5

81.0

85 4.0 9.3 95.5 63.2 52.3 3.20 5.79 375.3 170.8 5.1 21.2

81.4

95 3.6 8.3 105.4 62.5 50.1 3.63 5.05 423.7 176.6 3.8 20.0

82.0

110 3.6 8.3 120.3 61.5 46.5 4.41 4.09 509.8 181.8 5.4

20.0

6.0 1.3 3.0

12.0

9.0 2.8 6.5

12.0 4.5 10.5

6.0 1.3 3.1

10.9

6.0 1.4 3.1

6.0 1.4 3.2

9.0

4.6

12.09.0 2.9 6.7

12.0 4.7 10.7

12.02.9

10.6

6.6

12.0

12.09.0 2.9 6.8

12.0 4.7

6.0 1.4 3.3

12.09.0 3.0 7.0

12.0 4.9 11.2

6.0 1.5 3.4

6.0 1.6 3.6

5.1 11.7

12.09.0 3.2 7.3

12.0

12.09.0 3.3 7.7

12.0 5.4 12.3

Source Water

Load Water

Heating

WPD

25 12.0 5.4 12.5 12.0

WPD

Section 12: Model 048 Performance Data: 4.0 Ton, Full Load Hydronic Heating

Enertech Global CT Models, Rev.: A

Section 12: Model 060 Performance Data: 5.0 Ton,

EWT Flow

LWT

Aiflow TC SC HR EER Discharge Suction Subcooling Superheat

°F GPM PSI FT °F CFM MBtuh MBtuh MBtuh Btuh/W PSIG PSIG °F °F

71.7 1750 67.7 43.1 0.64 78.8 3.25 20.8 238.3 124.2 27.8 13.8

72.1 1950 68.8 45.6 0.66 80.4 3.40 20.2 239.1 129.5 28.0 13.5

64.1 1750 68.0 43.3 0.64 78.5 3.07 22.1 218.8 123.5 23.1 14.3

64.4 1950 69.2 45.8 0.66 80.1 3.20 21.6 219.6 128.9 23.2 13.9

60.7 1750 68.0 43.4 0.64 78.2 2.99 22.7 210.7 123.5 20.9 14.5

61.0 1950 69.2 45.9 0.66 79.9 3.13 22.1 211.4 128.8 21.1 14.2

81.6 1750 66.4 42.5 0.64 78.4 3.51 18.9 274.0 126.5 28.0 10.5

82.0 1950 67.5 44.9 0.67 80.0 3.67 18.4 274.9 132.0 28.2 10.0

74.0 1750 66.7 42.7 0.64 78.0 3.31 20.2 251.6 125.8 23.0 10.9

74.3 1950 67.9 45.1 0.66 79.7 3.46 19.6 252.4 131.3 23.2 10.5

70.7 1750 66.7 42.8 0.64 77.7 3.23 20.7 242.2 125.8 20.7 11.1

70.9 1950 67.9 45.3 0.67 79.4 3.38 20.1 243.0 131.2 20.9 10.7

91.4 1750 64.8 41.8 0.65 77.8 3.80 17.1 311.8 128.8 27.8 7.6

91.9 1950 66.0 44.2 0.67 79.5 3.97 16.6 312.8 134.4 27.9 7.0

83.9 1750 65.1 42.0 0.65 77.3 3.58 18.2 286.3 128.1 22.8 8.0

84.2 1950 66.3 44.4 0.67 79.1 3.74 17.7 287.3 133.7 22.9 7.5

80.6 1750 65.2 42.1 0.65 77.1 3.49 18.7 275.7 128.1 20.4 8.2

80.8 1950 66.3 44.5 0.67 78.8 3.65 18.2 276.6 133.6 20.6 7.7

101.0 1750 62.3 40.8 0.65 76.4 4.13 15.1 354.6 131.2 27.3 7.1

101.5 1950 63.4 43.1 0.68 78.1 4.31 14.7 355.8 136.9 27.4 6.6

93.6 1750 62.6 41.0 0.65 75.9 3.89 16.1 325.6 130.5 22.6 7.6

93.9 1950

63.7 43.3 0.68 77.6 4.07 15.7 326.7 136.2 22.7 7.1

90.4 1750 62.6 41.1 0.66 75.6 3.80 16.5 313.5 130.5 20.3 7.8

90.6 1950 63.7 43.4 0.68 77.2 3.97 16.0 314.6 136.1 20.4 7.3

110.5 1750 59.1 39.5 0.67 74.6 4.53 13.0 402.7 133.7 26.4 7.8

111.0 1950 60.1 41.8 0.70 76.3 4.74 12.7 404.1 139.4 26.6 7.4

103.3 1750 59.4 39.7 0.67 74.0 4.27 13.9 369.8 132.9 22.1 8.3

103.6 1950 60.4 42.0 0.70 75.6 4.46 13.5 371.1 138.7 22.2 7.8

100.1 1750 59.4 39.8 0.67 73.6 4.17 14.2 356.1 132.9 19.9 8.5

100.4 1950 60.5 42.1 0.70 75.4 4.36 13.9 357.3 138.6 20.1 8.1

120.0 1750 55.8 38.1 0.68 72.9 5.01 11.1 454.9 136.1 25.4 7.8

120.5 1950 56.8 40.3 0.71 74.7 5.24 10.8 456.5 141.9 25.5 7.3

112.9 1750

56.1 38.3

0.68 72.2 4.72 11.9 417.8 135.3 21.0 8.3

113.3 1950 57.1 40.5 0.71 74.0 4.94 11.6 419.2 141.2 21.1 7.8

109.9 1750 56.1 38.4 0.68 71.8 4.61 12.2 402.2 135.3 18.9 8.5

110.1 1950 57.1 40.6 0.71 73.5 4.82 11.8 403.6 141.1 19.1 8.0

129.5 1750 52.3 36.5 0.70 71.1 5.52 9.5 509.3 138.5 25.0 8.2

130.0 1950 53.2 38.6 0.73 72.9 5.76 9.2 511.0 144.4 25.2 7.8

122.6 1750 52.5 36.7 0.70 70.2 5.20 10.1 467.7 137.7 19.6 8.7

122.9 1950 53.5 38.8 0.73 72.1 5.44 9.8 469.2 143.7 19.8 8.3

119.6 1750 52.6 36.8 0.70 69.9 5.08 10.4 450.3 137.7 17.4 8.9

119.8 1950 53.5 38.9 0.73 71.6 5.31 10.1 451.8 143.6 17.6 8.5

Cooling data based on 80/67 °F EAT. See Correction Factors at end of section for different conditions LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F

Cooling

WPD

S/T kW

7.5 2.6 6.0

11.5 5.3 12.2

15.0 8.2 19.0

7.5 2.4 5.6

11.5 4.9 11.4

15.0 7.7 17.7

7.5 2.3 5.2

11.5 4.6 10.6

15.0 7.2 16.5

7.5 2.2 5.0

11.5 4.4 10.1

15.0 6.8 15.7

7.5 2.1 4.8

11.5 4.2 9.7

15.0 6.5 15.1

100

7.5 2.0 4.6

11.5 4.0 9.3

15.0 6.3 14.5

110

7.5 1.9 4.5

11.5 3.9 9.0

15.0 6.1 14.1

Full Load, Cooling

CT Models, Rev.: A Enertech Global

Section 12: Model 060 Performance Data: 5.0 Ton,

EWT Flow

LWT

Aiflow LAT HC HE COP Discharge Suction Subcooling Superheat

°F GPM PSI FT °F CFM °F MBtuh MBtuh kW W/W PSIG PSIG °F °F

20.8 1700 93.6 43.4 30.2 3.88 3.28 301.7 65.7 26.9 3.3

20.7 1850 92.4 44.7 31.4 3.90 3.36 301.3 65.6 26.8 3.3

21.6 1700 93.9 43.8 30.6 3.87 3.32 305.8 66.6 29.8 4.8

21.3 1850 92.6 45.1 31.8 3.90 3.39 305.4 66.6 29.7 4.7

24.1 1700 95.4 46.6 33.1 3.95 3.46 313.6 71.3 28.2 3.6

23.8 1850 94.0 48.0 34.5 3.97 3.54 313.2 71.2 28.1 3.6

25.3 1700 95.9 47.5 34.0 3.96 3.52 315.4 73.5 26.3 3.0

25.1 1850 94.5 48.9 35.3 3.99 3.59 315.0 73.5 26.2 3.0

29.9 1700 97.4 50.3 36.7 4.00 3.69 321.9 81.1 27.4 3.7

29.6 1850 95.9 51.8 38.0 4.03 3.77 321.5 81.1 27.3 3.7

32.9 1700 99.1 53.5 39.6 4.08 3.84 330.1 86.8 25.3 3.3

32.6 1850 97.6 55.1 41.1 4.11 3.93 329.7 86.7 25.3 3.2

34.4 1700 99.7 54.5 40.5 4.10 3.90 332.0 89.6 23.4 3.0

34.2 1850 98.1 56.2 42.1 4.12 4.00 331.6 89.5 23.3 3.0

38.3 1700 100.9 56.8 42.6 4.15 4.01 338.6 96.3 24.9 3.6

37.8 1850 99.3 58.5 44.3 4.17 4.11 338.2 96.3 24.9 3.5

41.8 1700 102.9 60.4 46.0 4.23 4.18 347.2 103.0 22.6 3.9

41.4 1850 101.2 62.3 47.8 4.25 4.30 346.7 103.0 22.5 3.9

43.5 1700 103.6 61.6 47.1 4.24 4.26 349.2 106.3 20.4 3.9

43.3 1850 101.7 63.4 48.8 4.27 4.35 348.7 106.3 20.3 3.9

46.6 1700 104.7 63.7 48.9 4.33 4.31 360.2 112.8 23.2 4.2

46.1 1850 102.8 65.6 50.7 4.36 4.41 359.8 112.7 23.2 4.2

50.5 1700 106.9 67.8 52.8 4.41 4.51 369.4 120.7 20.6 5.3

50.2 1850 105.0 69.9 54.8 4.44 4.61 368.9 120.6 20.5 5.2

52.6 1700 107.6 69.1 54.0 4.43 4.57 371.5 124.5 18.2 5.7

52.3 1850 105.6 71.2 56.0 4.46 4.68 371.0 124.4 18.1 5.7

54.8 1700 108.5 70.7 55.2 4.54 4.56 383.2 131.0 21.9 5.2

54.3 1850 106.4 72.8 57.2 4.57 4.67 382.7 130.9 21.8 5.3

59.4 1700 111.0 75.2 59.4 4.63 4.76 392.9 140.1 18.9 7.1

59.0 1850 108.8 77.5 61.6 4.66 4.87 392.4 140.0 18.8 7.0

61.7 1700 111.7 76.6 60.7 4.65 4.83 395.2 144.6 16.3 7.8

61.4 1850 109.5 78.9 62.9 4.68 4.94 394.7 144.5 16.2 7.8

63.2 1700 112.1 77.3 61.0 4.77 4.75 403.5 150.8 20.4 6.4

62.6 1850 109.8 79.6 63.2 4.80 4.86 403.0 150.7 20.3 6.4

68.2 1700 114.8 82.2 65.6 4.87 4.95 413.8 161.3 17.2 8.9

67.8 1850 112.4 84.7 68.0 4.89 5.08 413.2 161.2 17.1 8.8

70.8 1700 115.6 83.7 67.0 4.88 5.03 416.1 166.4 14.3 10.0

70.4 1850 113.2 86.3 69.5 4.91 5.15 415.6 166.3 14.2 9.9

71.6 1700 115.7 83.9 66.8 5.01 4.91 424.3 171.3 19.0 8.0

71.0 1850 113.2 86.4 69.2 5.04 5.02 423.8 171.2 18.9 7.9

77.1 1700 118.6 89.2 71.8 5.11 5.12 435.1 183.2 15.6 11.1

76.7 1850 116.0 91.9 74.4 5.14 5.24 434.5 183.1 15.5 11.0

79.9 1700 119.5 90.9 73.4 5.13 5.19 437.6 189.1 12.6 12.4

79.5 1850 116.9 93.7 76.1 5.16 5.32 437.0 188.9 12.5 12.4

Heating data based on 70 °F EAT. See Correction Factors at end of section for different conditions

LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI

SubCooling is ± 5 °F; Superheat is ± 6 °F

Heating

WPD

25 15.0 10.5 24.3

7.5 3.6 8.2

11.5 6.7 15.4

15.0 10.1 23.3

7.5 3.3 7.6

11.5 6.2 14.3

15.0 9.4 21.7

7.5 3.1 7.1

11.5 5.8 13.3

15.0 8.7 20.1

7.5 2.8 6.6

11.5 5.3 12.3

15.0 8.1 18.7

7.5 2.7 6.2

11.5 5.0 11.6

15.0 7.6 17.5

7.5 2.6 5.9

11.5 4.8 11.1

15.0 7.3 16.7

7.5 2.4 5.6

11.5 4.6 10.6

15.0 7.0 16.0

Full Load, Heating

Enertech Global CT Models, Rev.: A

Section 12: Model 060D Performance Data: 5.0 Ton, Full Load Hydronic Heating

EWT Flow

LWT

ELT Flow

LLT

HC HE COP Discharge Suction Subcooling Superheat

°F GPM PSID FT °F °F GPM PSID FT °F MBtuh MBtuh kW W/W PSIG PSIG °F °F

21.1

85 4.8 11.1 90.3 40 28.1 3.50 3.35 335.4 59.8 11.5

12.7

21.6

95 4.7 10.9 100.1 38.4 24.9 3.96 2.84 381.5 60.5 13.1

12.5

22.0

110 4.4 10.2 115.1 37.9 21.7 4.75 2.34 454.9 61.8 17.5

12.1

22.3

85 4.8 11.1 90.5 40.9 28.1 3.74 3.20 362.1 69.2 13.0 7.7

23.2

95 4.7 10.9 100.2 39.3 24.9 4.23 2.72 412.0 70.1 14.1 7.4

24.1

110 4.4 10.2 115.2 38.8 21.5 5.07 2.24 491.2 71.6 19.1 7.0

24.6

85 4.8 11.1 90.7 42.6 30.3 3.60 3.47 349.4 72.9 12.1 7.3

25.2

95 4.7 10.9 100.4 40.8 26.9 4.07 2.94 397.5 73.9 13.4 7.1

25.8

110 4.4 10.2 115.4 40.4 23.7 4.88 2.43 473.9 75.4 18.1

6.7

25.6

85 4.8 11.1 90.9 44.1 32.0 3.55 3.64 342.8 75.2 12.2 6.7

26.1

95 4.7 10.9 100.6 42.3 28.6 4.02 3.08 390.0 76.2 13.6 6.5

26.5

110 4.4 10.2 115.6 41.8 25.4 4.82 2.54 465.0 77.8 18.2 6.1

30.6

85 4.8 11.1 91.3 47.2 34.2 3.81 3.63 370.1 84.1 9.1

6.6

31.6

95 4.7 10.9 101.0 45.3 30.6 4.30 3.09 421.0 85.2 9.7

6.5

32.5

110 4.4 10.2 116.0 44.8 27.2 5.16 2.54 502.0 87.1 14.6

6.2

33.4

85 4.8 11.1 91.5 49.1 36.6 3.67 3.92 357.0 88.7 8.3 6.9

34.1

95 4.7 10.9 101.3 47.1 33.0 4.14 3.33 406.2 89.8 9.1 6.8

34.7

110 4.4 10.2 116.2 46.6 29.6 4.97 2.75 484.3 91.8 13.6 6.6

34.7

85 4.8 11.1 91.8 50.9 38.5 3.62 4.12 350.3 91.5 8.4

6.5

35.2

95 4.7

10.9 101.5 48.8 34.9 4.08 3.51 398.5 92.7 9.4

6.4

35.7

110 4.4 10.2 116.4 48.3 31.6 4.90 2.89 475.1 94.7 13.7

6.2

39.0

85 4.8 11.1 92.1 53.3 40.1 3.87 4.04 377.8 98.5 5.6 7.2

40.0

95 4.7 10.9 101.8 51.2 36.3 4.37 3.43 429.8 99.8 5.8 7.1

41.0

110 4.4 10.2 116.7 50.6 32.7 5.25 2.82 512.5 102.0 10.8 7.0

42.3

85 4.8 11.1 92.4 55.5 42.8 3.73 4.36 364.5 103.9 4.9 8.1

43.0

95 4.7 10.9 102.1 53.2 38.8 4.21 3.70 414.7 105.2 5.3 8.1

43.7

110 4.4 10.2 117.0 52.6 35.4 5.05 3.05 494.4 107.5 9.7 8.1

43.8

85 4.8 11.1 92.7 57.5 44.9 3.68 4.58 357.6 107.2 5.1 7.9

44.4

95 4.7 10.9 102.3 55.1 40.9 4.15 3.89 406.8 108.6 5.7 7.9

44.8

110 4.4 10.2 117.3

54.5 37.5

4.98 3.21 485.1 110.9 9.9 7.9

47.4

85 4.8 11.1 92.9 59.5 46.0 3.95 4.41 388.0 116.9 4.9

6.9

48.5

95 4.7 10.9 102.6 57.1 41.9 4.46 3.75 441.3 118.4 5.0

7.0

49.5

110 4.4 10.2 117.5 56.4 38.1 5.36 3.08 526.2 120.9 10.3

7.0

51.2

85 4.8 11.1 93.3 61.9 48.9 3.80 4.77 374.3 123.2 4.3 8.4

52.0

95 4.7 10.9 102.9 59.3 44.6 4.30 4.04 425.8 124.8 4.5 8.5

52.6

110 4.4 10.2 117.8 58.7 41.1 5.16 3.33 507.7 127.5 9.2 8.7

52.9

85 4.8 11.1 93.5 64.1 51.3 3.75 5.01 367.2 127.1 4.5

8.5

53.5

95 4.7 10.9 103.2 61.5 47.0 4.24 4.25 417.7 128.8 4.9

8.6

54.0

110 4.4 10.2 118.1 60.8 43.4 5.09 3.50 498.1 131.5 9.3

8.8

55.9

85 4.8 11.1 93.7 65.1 51.3 4.03 4.73 397.6 133.8

5.4 8.3

57.1

95 4.7 10.9 103.3 62.5 47.0 4.55 4.03 452.3 135.6 5.5 8.4

58.1

110 4.4 10.2 118.2 61.8 43.2 5.46 3.32 539.3 138.5 11.3 8.7

60.2

85 4.8 11.1 94.0 67.7 54.5 3.88 5.11 383.6 141.1 4.8 10.4

61.0

95 4.7 10.9 103.7 65 50.1 4.38 4.35 436.4 142.9 5.0 10.6

61.7

110 4.4 10.2 118.6 64.2 46.3 5.26 3.58 520.3 146.0 10.1 11.0

62.2

85 4.8 11.1 94.4 70.2 57.1 3.83 5.37 376.3 145.5 5.1 10.7

62.8

95 4.7 10.9 104.0 67.3 52.6 4.32 4.57 428.1 147.5 5.3 10.9

63.3

110 4.4 10.2 118.9 66.5 48.8 5.19 3.76 510.5 150.6 10.2 11.3

64.7

85 4.8 11.1 94.3 69.8 55.8 4.09 5.00 403.9 144.6 5.2

12.7

66.0

95 4.7 10.9 103.9 66.9 51.1 4.62 4.24 459.5 146.5 5.3

12.9

67.0

110

4.4 10.2 118.8 66.2 47.3 5.54 3.50 547.8 149.6 11.3

13.3

69.4

85 4.8 11.1 94.7 72.6 59.2 3.94 5.40 389.7 152.4 4.6 15.5

70.2

95 4.7 10.9 104.3 69.6 54.4 4.45 4.58 443.3 154.4 4.7 15.8

70.9

110 4.4 10.2 119.2 68.8 50.6 5.34 3.78 528.5 157.7 10.1 16.3

71.5

85 4.8 11.1 95.0 75.2 62.0 3.88 5.68 382.3 157.2 4.9

16.0

72.2

95 4.7 10.9 104.6 72.1 57.1 4.39 4.81 434.9 159.3 5.1

16.4

72.7

110 4.4 10.2 119.5 71.3 53.4 5.26 3.97 518.5 162.7 10.1

16.9

73.5

85 4.8 11.1 94.9 74.3 60.1 4.15 5.25 410.0 154.8 5.4 17.5

74.8

95 4.7 10.9 104.5 71.2 55.2 4.69 4.45 466.4 156.8 5.6 17.9

75.9

110 4.4 10.2 119.4 70.4 51.2 5.62 3.67 556.1 160.2 11.8 18.4

78.6

4.8 11.1 95.3 77.2

63.6 3.99 5.67 395.5 163.1 4.9 20.9

79.5

95 4.7 10.9 104.9 74.1 58.7 4.51 4.82 450.0 165.3 5.0 21.4

80.2

110 4.4 10.2 119.8 73.2 54.7 5.41 3.97 536.5 168.8 10.6 22.1

80.8

85 4.8 11.1 95.7 80 66.6 3.94 5.95 388.0 168.3 5.2 21.7

81.5

95 4.7 10.9 105.2 76.7 61.5 4.45 5.05 441.4 170.6 5.4 22.2

82.1

110 4.4 10.2 120.1 75.9 57.7 5.34 4.17 526.3 174.2 10.7

22.9

7.5 2.2 5.1

15.0

11.5 4.6 10.5

15.0 6.7 15.4

7.5 2.3 5.3

18.3

7.5 2.5 5.7

7.5 2.6 6.0

11.5

7.1

15.011.5 5.1 11.8

15.0 7.5 17.3

15.04.8

16.3

11.2

15.0

15.011.5 5.4 12.5

15.0 7.9

7.5 2.8 6.4

15.011.5 5.8 13.4

15.0 8.5 19.6

7.5 3.0 7.0

7.5 3.3 7.6

9.3 21.3

15.011.5 6.3 14.6

15.0

15.011.5 6.9 15.9

15.0 10.1 23.2

Source Water

Load Water

Heating

WPD

25 15.0 10.3 23.8 15.0

WPD

CT Models, Rev.: A Enertech Global

Section 12: Model 072 Performance Data: 6.0 Ton,

EWT Flow

LWT

Aiflow TC SC HR EER Discharge Suction Subcooling Superheat

°F GPM PSI FT °F CFM MBtuh MBtuh MBtuh Btuh/W PSIG PSIG °F °F

71.0 1900 78.3 47.1 0.60 91.5 3.87 20.2 234.0 124.6 25.0 4.9

71.1 2150 78.3 48.2 0.62 92.3 4.11 19.1 235.7 127.8 25.3 6.6

63.9 1900 78.9 47.5 0.60 91.3 3.64 21.7 215.0 124.4 20.4 5.2

64.1 2150 78.9 48.7 0.62 92.1 3.87 20.4 216.6 127.6 20.7 6.9

60.5 1900 79.3 48.4 0.61 91.5 3.57 22.2 208.9 124.3 18.9 6.9

60.6 2150 79.3 49.6 0.63 92.3 3.80 20.9 210.4 127.5 19.2 8.7

80.8 1900 76.3 46.3 0.61 90.6 4.18 18.3 269.9 127.8 26.1 4.2

80.9 2150 76.3 47.5 0.62 91.4 4.44 17.2 271.8 131.1 26.4 5.8

73.8 1900 76.9 46.7 0.61 90.3 3.94 19.5 248.0 127.6 21.2 4.4

73.9 2150 76.9 47.9 0.62 91.2 4.18 18.4 249.7 130.9 21.6 6.2

70.4 1900 77.3 47.6 0.62 90.5 3.86 20.0 240.9 127.4 19.6 6.2

70.5 2150 77.3 48.8 0.63 91.3 4.10 18.9 242.6 130.8 19.9 8.0

90.5 1900 74.1 45.4 0.61 89.5 4.52 16.4 307.7 130.8 26.7 3.5

90.7 2150 74.1 46.5 0.63 90.5 4.81 15.4 309.9 134.2 27.0 5.2

83.6 1900 74.6 45.8 0.61 89.1 4.26 17.5 282.7 130.6 21.9 3.9

83.8 2150 74.6 47.0 0.63 90.1 4.53 16.5 284.7 134.0 22.2 5.6

80.2 1900 75.0 46.7 0.62 89.3 4.18 17.9 274.7 130.5 20.1 5.5

80.3 2150 75.0 47.9 0.64 90.1 4.44 16.9 276.6 133.9 20.5 7.3

100.2 1900 71.2 44.4 0.62 88.0 4.92 14.5 349.0 133.7 27.0 2.9

100.4 2150 71.2 45.5 0.64 89.0 5.23 13.6 351.4 137.2 27.2 4.6

93.4 1900 71.8 44.8 0.62 87.6 4.63 15.5 320.6 133.5 22.3 3.3

93.5 2150

71.8 45.9 0.64 88.6 4.93 14.6 322.9 136.9 22.6 5.0

90.0 1900 72.1 45.6 0.63 87.6 4.55 15.8 311.5 133.4 20.6 5.0

90.1 2150 72.1 46.8 0.65 88.6 4.83 14.9 313.7 136.8 20.9 6.8

109.7 1900 67.7 42.9 0.63 86.1 5.40 12.5 395.2 136.3 26.8 2.5

110.0 2150 67.7 44.0 0.65 87.3 5.75 11.8 398.0 139.8 26.9 4.2

103.1 1900 68.2 43.4 0.64 85.6 5.09 13.4 363.1 136.0 22.4 2.8

103.2 2150 68.2 44.4 0.65 86.7 5.41 12.6 365.7 139.6 22.7 4.6

99.8 1900 68.5 44.2 0.65 85.5 4.99 13.7 352.8 135.9 20.9 4.7

99.9 2150 68.5 45.3 0.66 86.6 5.31 12.9 355.3 139.5 21.2 6.4

119.2 1900 63.6 41.0 0.64 84.0 5.97 10.7 446.5 138.4 26.3 2.4

119.5 2150 63.6 42.0 0.66 85.3 6.35 10.0 449.7 142.0 26.5 4.2

112.7 1900

64.1 41.4

0.65 83.3 5.62 11.4 410.2 138.2 22.1 2.8

112.9 2150 64.1 42.4 0.66 84.5 5.98 10.7 413.1 141.8 22.2 4.6

109.5 1900 64.4 42.2 0.66 83.2 5.52 11.7 398.5 138.1 20.6 4.5

109.7 2150 64.4 43.3 0.67 84.4 5.87 11.0 401.3 141.7 20.9 6.5

128.7 1900 59.3 38.9 0.66 81.8 6.58 9.0 499.7 140.4 26.3 2.5

129.1 2150 59.3 39.9 0.67 83.2 6.99 8.5 503.3 144.1 26.6 4.2

122.3 1900 59.7 39.3 0.66 80.8 6.19 9.6 459.2 140.2 21.4 2.9

122.6 2150 59.7 40.3 0.68 82.2 6.58 9.1 462.4 143.9 21.6 4.6

119.2 1900 60.0 40.1 0.67 80.7 6.07 9.9 446.1 140.1 19.8 4.7

119.4 2150 60.0 41.1 0.69 82.0 6.46 9.3 449.2 143.7 20.0 6.6

Cooling data based on 80/67 °F EAT. See Correction Factors at end of section for different conditions LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI SubCooling is ± 5 °F; Superheat is ± 6 °F

Cooling

WPD

S/T kW

9.0 3.0 6.9

13.5 5.8 13.4

18.0 8.6 19.8

9.0 2.9 6.6

13.5 5.6 12.9

18.0 8.3 19.2

9.0 2.8 6.4

13.5 5.4 12.5

18.0 8.1 18.6

9.0 2.7 6.2

13.5 5.2 12.1

18.0 7.8 17.9

9.0 2.6 6.0

13.5 5.1 11.7

18.0 7.5 17.3

100

9.0 2.5 5.9

13.5 4.9 11.4

18.0 7.3 16.9

110

9.0 2.5 5.7

13.5 4.8 11.2

18.0 7.2 16.6

Full Load, Cooling

Enertech Global CT Models, Rev.: A

Section 12: Model 072 Performance Data: 6.0 Ton,

EWT Flow

LWT

Aiflow LAT HC HE COP Discharge Suction Subcooling Superheat

°F GPM PSI FT °F CFM °F MBtuh MBtuh kW W/W PSIG PSIG °F °F

20.9 2000 94.4 52.6 36.2 4.80 3.21 301.6 66.5 23.7 4.2

20.7 2100 93.6 53.6 37.3 4.79 3.28 298.6 66.1 23.0 4.5

21.2 2000 95.6 55.2 38.4 4.91 3.29 310.9 70.1 28.3 2.6

21.0 2100 94.8 56.2 39.5 4.90 3.36 307.8 69.7 27.7 2.9

23.9 2000 96.4 57.0 40.2 4.93 3.39 315.7 75.1 25.8 1.5

23.7 2100 95.6 58.1 41.3 4.92 3.46 312.5 74.7 25.1 1.8

25.3 2000 96.9 58.0 41.1 4.96 3.43 318.1 77.2 24.5 1.3

25.2 2100 96.1 59.1 42.2 4.94 3.51 315.0 76.8 23.9 1.5

29.7 2000 98.8 62.3 45.1 5.05 3.62 326.1 84.8 24.5 1.9

29.4 2100 98.0 63.4 46.2 5.04 3.69 322.9 84.3 23.9 2.1

32.8 2000 99.8 64.4 47.1 5.07 3.72 331.1 90.9 21.6 1.6

32.6 2100 98.9 65.6 48.3 5.06 3.80 327.8 90.4 21.0 1.7

34.5 2000 100.4 65.6 48.2 5.10 3.77 333.7 93.4 20.1 1.7

34.3 2100 99.4 66.7 49.4 5.08 3.85 330.4 92.9 19.5 1.9

38.2 2000 102.2 69.5 51.7 5.21 3.91 342.7 99.9 21.1 2.1

37.8 2100 101.2 70.8 53.1 5.20 3.99 339.2 99.4 20.5 2.4

41.8 2000 103.3 71.9 54.0 5.24 4.02 347.9 107.1 17.8 2.7

41.5 2100 102.3 73.2 55.4 5.22 4.11 344.4 106.5 17.2 2.9

43.7 2000 103.9 73.2 55.3 5.26 4.08 350.6 110.0 16.2 3.2

43.5 2100 102.8 74.5 56.6 5.25 4.16 347.1 109.5 15.6 3.4

46.4 2000 106.2 78.2 59.5 5.48 4.18 368.4 117.5 20.6 2.0

46.0 2100 105.1 79.6 61.0 5.46 4.27 364.7 117.0 20.0 2.1

50.5 2000 107.4 80.8 62.0 5.50 4.31 374.0 126.0 17.0 3.2

50.3 2100 106.3 82.3 63.6 5.49 4.39 370.2 125.4 16.4 3.4

52.7 2000 108.1 82.3 63.4 5.53 4.36 376.9 129.5 15.2 4.1

52.6 2100 106.9 83.7 64.9 5.51 4.45 373.2 128.8 14.7 4.4

54.6 2000 110.3 87.1 67.3 5.79 4.41 397.5 136.3 21.1 2.4

54.2 2100 109.1 88.6 68.9 5.78 4.49 393.6 135.6 20.6 2.7

59.3 2000 111.7 90.0 70.1 5.82 4.53 403.6 146.1 17.3 4.4

59.0 2100 110.4 91.6 71.8 5.80 4.63 399.6 145.3 16.7 4.7

61.8 2000 112.4 91.6 71.7 5.84 4.60 406.7 150.1 15.4 5.7

61.6 2100 111.1 93.3 73.4 5.83 4.69 402.7 149.3 14.8 5.9

63.0 2000 114.0 95.0 74.2 6.09 4.57 423.4 154.1 20.9 4.5

62.6 2100 112.6 96.7 76.0 6.08 4.66 419.2 153.4 20.3 4.8

68.2 2000 115.5 98.3 77.4 6.12 4.71 429.9 165.2 16.9 7.3

67.9 2100 114.1 100.0 79.2 6.10 4.80 425.6 164.4 16.3 7.6

71.0 2000 116.3 100.0 79.0 6.15 4.77 433.2 169.8 14.9 9.0

70.7 2100 114.9 101.8 80.9 6.13 4.87 428.9 168.9 14.3 9.2

71.4 2000 117.7 103.1 81.2 6.41 4.71 450.7 172.4 21.2 7.0

70.9 2100 116.3 105.0 83.2 6.40 4.81 446.2 171.6 20.6 7.3

77.1 2000 119.4 106.6 84.6 6.44 4.85 457.6 184.8 17.0 10.5

76.8 2100 117.9 108.6 86.7 6.43 4.95 453.0 183.9 16.4 10.8

80.1 2000 120.2 108.5 86.4 6.47 4.91 461.2 189.9 15.0 12.5

79.9 2100 118.7 110.5 88.5 6.46 5.01 456.6 189.0 14.3 12.8

Heating data based on 70 °F EAT. See Correction Factors at end of section for different conditions

LWT is based on 15% (by volume) methanol antifreeze solution only or 485 multiplier

Performance data accurate within ± 10%

Discharge pressure is ± 20 PSI; Suction pressure is ± 10 PSI

SubCooling is ± 5 °F; Superheat is ± 6 °F

11.5

18.0 7.6 17.6

9.0 2.4 5.6

13.5 4.8 11.2

18.0 7.4 17.0

9.0

13.5 5.2 12.0

9.0 3.1 7.1

13.5 6.1 14.2

18.0 9.3 21.6

3.3

2.5 5.8

13.5 5.0

9.0 2.9 6.6

13.5 5.7

18.0 8.7 20.1

9.0 2.7

Heating

WPD

25 18.0 10.3 23.7

7.6

13.5 6.6

18.0 8.3 19.1

15.2

18.0 10.0 23.1

9.0 2.6

13.2

6.3

13.5 5.4 12.5

6.0

18.0 7.9 18.3

Full Load, Heating

CT Models, Rev.: A Enertech Global

Section 12: Model 072D Performance Data: 6.0 Ton, Full Load Hydronic Heating

EWT Flow

LWT

ELT Flow

LLT

HC HE COP Discharge Suction Subcooling Superheat

°F GPM PSID FT °F °F GPM PSID FT °F MBtuh MBtuh kW W/W PSIG PSIG °F °F

21.0

85 5.7 13.3 90.5 49.5 35.0 4.25 3.41 334.5 66.2 15.9

3.3

21.4

95 5.5 12.8 100.3 48 31.8 4.76 2.96 379.0 67.5 17.9

2.6

21.7

110 5.5 12.6 115.4 48.9 29.1 5.79 2.48 457.3 68.9 21.9

1.6

21.8

85 5.6 13.0 90.7 51.3 36.0 4.47 3.36 361.0 71.4 20.2 5.9

22.5

95 5.4 12.5 100.5 49.7 32.6 5.02 2.90 409.0 72.7 22.0 5.1

23.2

110 5.3 12.3 115.6 50.6 29.8 6.10 2.43 493.4 74.3 26.8 4.2

24.2

85 5.6 13.0 90.8 52.5 37.9 4.29 3.59 347.4 75.6 15.1 4.8

24.7

95 5.4 12.5 100.7 50.9 34.5 4.81 3.10 393.7 77.0 16.8 4.1

25.1

110 5.3 12.3 115.8 51.8 31.8 5.85 2.60 474.9 78.7 20.8

3.1

25.5

85 5.6 13.0 91.0 54.1 39.6 4.25 3.73 340.2 77.5 14.0 5.2

25.9

95 5.4 12.5 100.8 52.4 36.2 4.76 3.23 385.5 79.0 15.8 4.4

26.2

110 5.3 12.3 115.9 53.3 33.5 5.79 2.70 465.0 80.7 19.6 3.4

30.2

85 5.8 13.3 91.5 58.2 42.7 4.55 3.75 368.0 86.0 16.2

5.4

31.1

95 5.6 12.8 101.3 56.3 38.9 5.10 3.24 416.9 87.6 17.5

4.7

31.7

110 5.5 12.6 116.4 57.4 36.2 6.20 2.71 503.0 89.5 22.1

3.7

33.2

85 5.8 13.3 91.6 59.6 44.7 4.36 4.01 354.2 91.1 10.9 4.9

33.7

95 5.6 12.8 101.4 57.7 41.0 4.89 3.46 401.3 92.8 12.2 4.2

34.1

110 5.5 12.6 116.5 58.8 38.5 5.95 2.90 484.1 94.8 15.8 3.1

34.7

85 5.8 13.3 91.8 61.3 46.6 4.32 4.16 346.8 93.5 9.9

5.8

35.1

95 5.6

12.8 101.6 59.4 42.9 4.84 3.60 392.9 95.2 11.2

5.1

35.4

110 5.5 12.6 116.7 60.5 40.4 5.89 3.01 474.0 97.2 14.6

4.0

38.8

85 5.9 13.6 92.2 64.9 49.1 4.62 4.12 374.9 100.3 12.6 5.8

39.7

95 5.7 13.1 102.0 62.8 45.1 5.18 3.55 424.8 102.1 13.6 5.1

40.3

110 5.6 12.9 117.1 64 42.5 6.31 2.97 512.4 104.3 18.1 4.1

42.2

85 5.9 13.6 92.4 66.4 51.3 4.43 4.39 360.8 106.2 7.3 5.7

42.8

95 5.7 13.1 102.2 64.4 47.4 4.97 3.80 408.8 108.2 8.1 5.0

43.1

110 5.6 12.9 117.3 65.5 44.9 6.04 3.18 493.2 110.5 11.6 4.0

43.9

85 5.9 13.6 92.6 68.4 53.4 4.39 4.57 353.3 108.9 6.2 7.1

44.3

95 5.7 13.1 102.4 66.3 49.5 4.92 3.95 400.3 110.9 7.1 6.4

44.6

110 5.6 12.9 117.5

67.5 47.1

5.99 3.30 483.0 113.3 10.3 5.3

47.2

85 5.8 13.5 93.0 71.9 56.0 4.67 4.51 383.7 115.9 10.2

8.1

48.1

95 5.6 13.0 102.7 69.7 51.9 5.23 3.91 434.7 118.1 11.0

7.4

48.7

110 5.5 12.8 117.9 70.9 49.2 6.37 3.26 524.5 120.6 15.6

6.3

51.1

85 5.8 13.5 93.2 73.6 58.3 4.47 4.83 369.3 122.8 4.8 8.5

51.7

95 5.6 13.0 102.9 71.3 54.2 5.02 4.16 418.4 125.1 5.3 7.9

52.1

110 5.5 12.8 118.1 72.7 51.9 6.11 3.49 504.8 127.7 8.7 6.8

53.0

85 5.8 13.5 93.4 75.8 60.7 4.43 5.01 361.6 125.9 3.8

10.5

53.5

95 5.6 13.0 103.2 73.4 56.4 4.97 4.33 409.7 128.3 4.3

9.8

53.8

110 5.5 12.8 118.3 74.8 54.2 6.05 3.62 494.3 131.0 7.4

8.7

55.7

85 5.7 13.2 93.7 78.6 62.5 4.72 4.88 392.4 130.5

9.1 9.9

56.7

95 5.5 12.7 103.5 76.1 58.0 5.29 4.22 444.6 133.0 9.7 9.3

57.3

110 5.4 12.5 118.6 77.5 55.6 6.43 3.53 536.4 135.8 14.6 8.2

60.1

85 5.7 13.2 93.9 80.4 65.0 4.52 5.21 377.7 138.2 3.6 10.9

60.7

95 5.5 12.7 103.7 77.9 60.6 5.07 4.50 428.0 140.8 3.9 10.3

61.1

110 5.4 12.5 118.8 79.4 58.3 6.17 3.77 516.3 143.8 7.6 9.1

62.3

85 5.7 13.2 94.2 82.8 67.5 4.48 5.42 369.9 141.8 2.6 13.3

62.8

95 5.5 12.7 103.9 80.2 63.1 5.02 4.68 419.1 144.5 2.9 12.7

63.0

110 5.4 12.5 119.1 81.7 60.9 6.11 3.92 505.6 147.5 6.2 11.5

64.4

85 5.7 13.1 94.4 84.2 67.9 4.79 5.15 399.3 141.9 9.1

9.3

65.5

95 5.5 12.6 104.1 81.6 63.3 5.37 4.45 452.4 144.5 9.7

8.7

66.1

110

5.4 12.4 119.2 83.1 60.8 6.54 3.72 545.7 147.6 14.8

7.5

69.2

85 5.7 13.1 94.6 86.2 70.5 4.59 5.50 384.3 150.3 3.6 10.4

69.9

95 5.5 12.6 104.3 83.5 65.9 5.15 4.75 435.4 153.1 3.8 9.8

70.3

110 5.4 12.4 119.5 85.1 63.7 6.27 3.98 525.3 156.3 7.7 8.6

71.6

85 5.7 13.1 94.9 88.8 73.3 4.55 5.72 376.3 154.1 2.6

13.0

72.1

95 5.5 12.6 104.6 86 68.6 5.10 4.94 426.3 157.0 2.8

12.4

72.4

110 5.4 12.4 119.7 87.6 66.4 6.21 4.13 514.3 160.3 6.3

11.2

73.3

85 5.6 13.0 95.0 89.7 73.1 4.86 5.41 406.1 152.8 9.6 8.4

74.4

95 5.4 12.5 104.7 86.9 68.3 5.45 4.67 460.1 155.7 10.2 7.8

74.9

110 5.3 12.3 119.8 88.5 65.8 6.64 3.91 555.0 159.0 15.6 6.6

78.4

5.6 13.0 95.2 91.9

76.0 4.66 5.78 390.8 161.8 4.0 9.6

79.1

95 5.4 12.5 104.9 89 71.2 5.23 4.99 442.8 164.8 4.3 9.0

79.5

110 5.3 12.3 120.1 90.7 69.0 6.36 4.18 534.2 168.4 8.5 7.8

81.0

85 5.6 13.0 95.5 94.6 78.8 4.62 6.00 382.7 166.0 3.1 12.4

81.5

95 5.4 12.5 105.2 91.6 73.9 5.18 5.18 433.6 169.1 3.3 11.8

81.8

110 5.3 12.3 120.4 93.3 71.8 6.30 4.34 523.1 172.7 7.1

10.6

9.0 2.3 5.2

18.0

13.5 4.5 10.3

18.0 7.5 17.4

9.0 2.3 5.4

19.1

9.0 2.4 5.6

9.0 2.5 5.7

13.5

7.8

18.013.5 4.8 11.0

18.0 8.0 18.6

18.04.6

17.9

10.7

18.0

18.013.5 4.9 11.4

18.0 8.3

9.0 2.6 6.0

18.013.5 5.1 11.9

18.0 8.6 19.9

9.0 2.8 6.4

9.0 3.0 6.8

9.2 21.3

18.013.5 5.5 12.7

18.0

18.013.5 5.9 13.6

18.0 9.9 22.8

Source Water

Load Water

Heating

WPD

25 18.0 10.0 23.1 18.0

WPD

Enertech Global CT Models, Rev.: A

Section 12: Performance Data Correction Factors

Heating Correction Factors

EAT °F HC HE kW

50 1.0465 1.1188 0.8024

55 1.0351 1.0918 0.8436

60 1.0253 1.0645 0.8928

65 1.0108 1.0300 0.9454

70 1.0000 1.0000 1.0000

75 0.9895 0.9701 1.0553

80 0.9742 0.9489 1.0518

Cooling Correction Factors Sensible Cooling Correction Factors

EAT

(WB) °F

55 0.8215 0.8293 0.8635

60 0.8955 0.9001 0.9205

63 0.9404 0.9431 0.9547

65 0.9701 0.9715 0.9774

67 1.0000 1.0000 1.0000

70 1.0446 1.0425 1.0335

75 1.1179 1.1124 1.0878

TC HR kW

EAT

(WB) °F

55 1.201 1.289

60 0.943 1.067 1.192

63 0.855 0.998 1.140

65 0.797 0.952 1.106 1.261

67 0.624 0.812 1.000 1.188 1.343

70 0.697 0.820 0.944 1.067

75 0.637 0.817 0.983

70 75 80 85 90

EAT (DB) °F

CT Models, Rev.: A Enertech Global

WARRANTY ORDER & CLAIM

PHONE : 618.664.9010 FAX : 618.664.4597 EMAIL : WARRANTY@ENERTECHGEO.COM

ALL WARRANTY REGISTRATIONS SHOULD BE SUBMITTED WITHIN 10 DAYS OF INSTALLATION

COMPANY NAME ____________________________________________________ DATE ___________________

(Form submitter)

PHONE _________________ FAX _________________ EMAIL ________________________________________

ORDERED BY _____________________________________ JOB NAME/PO # ____________________________

UNIT Model # _____________________________________ Serial # ____________________________________

FAILURE DATE ____________________

SHIP TO

(If different

ADDRESS

than

company)

Required if claim is for defective ow center

HOMEOWNER

FLOW CENTER MODEL # ________________________ FLOW CENTER SERIAL # __________________________

FAILURE CODES, DESCRIPTION AND LABOR REIMBURSEMENT

MUST BE FOUND IN WARRANTY MANUAL

FAILURE CODE DESCRIPTION PART NUMBER

____________ _________________________________________________

__________

____________ _________________________________________________

LABOR REIMBURSEMENT REQUESTED

DO YOU NEED PARTS ORDERED?

(If no, and replacement was purchased from another vendor, attach copy of bill if reimbursement is needed

NO YES

____________

__________

____________

OTHER NOTES _______________________________________________________________________________

____________________________________________________________________________________________

FOR ENERTECH COMPANIES USE ONLY

SRO# _________________________________________ CREDIT MEMO# ________________________________

1) See warranty coverage summary sheet for labor allowances, conditions and exclusions, etc. 2) Warranty start date is ship date from Enertech facility unless proof of startup is presented. 3) Outsourced warranty replacement parts will be reimbursed in the form of credit for the part only. Credit will be no more than the standard equivalent part cost through Enertech. 4) Factory pre-approval is required for anything outside the scope of this document. 5) Fuses, hose kits and items not mentioned on Warranty Coverage Summary are not covered under this program.

WARRANTY REGISTRATION

1 (Very Dissatis ed) 2 3 4 5 6 7 8 9 10 (Very Satis ed)

NOW REGISTER ONLINE AT WARRANTY-REGISTRATION.ENERTECHGEO.COM

WARRANTY REGISTRATIONS SHOULD BE SUBMITTED WITHIN 60 DAYS OF INSTALLATION

Model Number _________________________Serial Number __________________________ Install Date _______________

This unit is performing Satisfactorily Not Satisfactorily (please explain) _______________________________________

______________________________________________________________________________________________________

Purchaser/User Name _____________________________________________________ Phone ________________________

Address ____________________________________________ City __________________________ State/Prov _________

Postal Code ___________________ Email __________________________________________________________________

Installer Company Name ________________________________________________________________________________

City _____________________________State/Prov __________ Email ___________________________________________

Application

Residential New Construction Residential Geo Replacement Residential Replacement of Electric, Gas or Other

Multi-Family (Condo/Townhome/Multiplex) Commercial Other ___________________________________

Use (check all that apply)

Space Conditioning Domestic Water Heating Radiant Heat Swimming Pool Snow/Ice Melt

Other ______________________________________________________________________________________________

Loop Type

Horizontal Loop Vertical Loop Pond Loop Open Loop

Demographics

Household Income Under $30,000 $30,000–$45,000 $45,000–$60,000 $60,000–$75,000 $75,000–$100,000 Over $100,000

Home Size Up to 1500 sq. ft. 1501 to 2500 sq. ft. 2501 to 4000 sq. ft. Over 4000 sq. ft.

Home Location Rural Urban Suburban

Value of Home Less than $100,000 $100,000–$250,000 $250,000–$500,000 $500,000–$1 mil Over $1 mil

Customer Satisfaction

How would you rate your overall satisfaction with your new geothermal system?

How would you rate your overall satisfaction with your installing geothermal contractor?

MAIL THIS FORM TO: EMAIL THIS FORM TO: FAX THIS FORM TO:

ENERTECH GLOBAL LLC WARRANTY@ENERTECHGEO.COM ENERTECH GLOBAL LLC 2506 SOUTH ELM STREET 618.664.4597 GREENVILLE, IL 62246

Rev 30 DEC 2013B

Greenville, IL - Mitchell, SD

MEMBER

info@enertechgeo.com

Rev Tab

Enertech Global is continually working to improve its products. As a result, the price, design and specications of each product may change without notice and may not be as described herein. For the most up-to-date information, please visit our website, or contact our Customer Service department at info@enertechgeo.com. Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties, but are merely Enertech Global’s opinion or commendation of its products.

Enertech Global, LLC20D082-04NN

150815G

Enertech CT024, CT060, CT072, CT036, CT048 Engineering Data And Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual