Century HZD036B1D00CRN-CY WSHP DWNFLW 36K 2SPD GEO HWG Guide

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Design Guide

HZH/V Series

www.marsdelivers.com

HZ Premier Efficiency Series

Unit Features 4 iGate

Communicating Controls 6 vFlow

Internal Variable Water Flow Control 7

Selection Procedure 8

HZ Series Nomenclature 10

Performance Data AHRI/ASHRAE/ISO 13256-1 11

Performance Data Selection Notes - vFlow

Models 12

Performance Data – HZ H/V/D 024 (Part Load), No vFlow

Performance Data – HZ H/V/D 036 (Part Load), No vFlow

Performance Data – HZ H/V/D 036 (Full Load), No vFlow

Performance Data – HZ H/V/D 048 (Part Load), No vFlow

Performance Data – HZ H/V/D 048 (Full Load), No vFlow

Performance Data – HZ H/V/D 060 (Part Load), No vFlow

Performance Data – HZ H/V/D 060 (Full Load), No vFlow

Performance Data – HZ H/V/D 070 (Part Load), No vFlow

Performance Data – HZ H/V/D 070 (Full Load), No vFlow

Performance Data – HZ H/V/D 024 (Part Load), With vFlow

Performance Data – HZ H/V/D 024 (Full Load), With vFlow

Performance Data – HZ H/V/D 036 (Part Load), With vFlow

Performance Data – HZ H/V/D 036 (Full Load), With vFlow

Performance Data – HZ H/V/D 048 (Part Load), With vFlow

Performance Data – HZ H/V/D 048 (Full Load), With vFlow

Performance Data – HZ H/V/D 060 (Part Load), With vFlow

Performance Data – HZ H/V/D 060 (Full Load), With vFlow

Performance Data – HZ H/V/D 070 (Part Load), With vFlow

Performance Data – HZ H/V/D 070 (Full Load), With vFlow

Part Load Performance Data – Correction Tables 33

Full Load Performance Data – Correction Tables 34

Antifreeze & Water Pressure Drop Adder for Options – Correction Tables 35

Variable Pump Performance 36

ECM Blower Control 37

Blower Performance Data 38

ClimaDry II - Benefits and Appplication 39

ClimaDry II - Sequence of Operation 41

Physical Data 43

HZ Premier Efficiency Series

HZ - Horizontal Dimensional Data 44

HZ - Horizontal Service Access 46

HZ - Vertical Upflow Dimensional Data 47

HZ - Vertical Service Access 49

HZ - Vertical Downflow Dimensional Data 50

Corner Weights 52

Electrical Data 53

HZ Series Wiring Diagram Matrix 55

Typical Wiring Diagram – Single Phase HZ Units with Modulating Water Valve 56

Typical Wiring Diagram – Single Phase 208/230V HZ Units with Variable Pump 57

Typical Wiring Diagram – Single Phase HZ Units with MWV and MPC Controller 58

Typical Wiring Diagram – Single Phase HZ Units with MWV and LON Controller 59

Engineering Specifications 60

Revision History 71

Design Guide - HZH/HZV Series

Unit Features

THE HZ SERIES

A s one of the highest efficiency water-source heat pump on the planet, the HZ Series raises the bar for water-source heat pump efficiencies, features and application flexibility. Not only does the HZ Series far exceed ASHRAE 90.1 efficiencies, but it also uses EarthPure

(HFC-410A) zero ozone depletion refrigerant, making it an extremely environmentallyfriendly option. HZ is eligible for additional LEED

(Leadership in Energy and Environmental Design) points because of its “green” technology design.

Available in sizes 2 tons (7.0 kW) through 6 tons (19.3 kW) with multiple cabinet options (vertical upflow, vertical downflow and horizontal) the units offer a wide range of units for most any installation. The HZ has an extended range refrigerant circuit, capable of ground loop (geothermal) applications as well as water loop (boiler-tower) applications. Standard features are many. Copeland UltraTech™ two-stage unloading scroll compressor, ECM variable communicating fan motor, communicating microprocessor controls, galvanized steel cabinet, polyester powder coat paint, stainless steel drain pan and foil-backed air handler insulation are just some of the features of the innovative HZ Series.

Comfort-Aire/Century’s exclusive double isolation compressor mounting system makes the HZ one of the quietest units on the market. Compressors are mounted on specially engineered sound tested

EPDM grommets to a heavy gauge mounting plate, which is then isolated from the cabinet base with rubber grommets for maximized vibration/sound attenuation. User friendly installation and maintenance are provided by the multiple removable access panels and easy access control box. Options such as DDC controls, internal variable speed pumps, modulating water valves, and high efficiency MERV rated air filters allow customized design solutions.

iGate

technology is the next generation in intelligent control by using two-way communication to provide a gateway into the system. The iGate

control system allows end-users and contractors to monitor the performance of the unit, custom tailor its operation, and diagnose any issues, right from the thermostat.

The iGate

communications hub is the DXM2 intelligent controller, which analyzes the status of sensors and smart components (which are also two-way communicating) to determine how best to operate the system for optimal comfort, efficiency and long-term reliability. All of this information is passed to the iGate

thermostat (or diagnostic tool), where it can be displayed in plain English. And since communication is both ways, the iGate

thermostat can also be used to configure and tailor the system without even touching the unit.

vFlow

variable water flow technology represents a major advance in geothermal system performance made possible through the iGate

system. vFlow

not only builds the major water circulation components into the unit for a clean installation, it also intelligently varies the water flow to minimize pump energy consumption and improve system reliability.

The heart of vFlow

is either a variable-speed pump

(for ground loops) or modulating water valve (for ground water or central variable speed pumps) directly linked into the iGate

system. Water flow is automatically varied based on changes in unit capacity level (stage) and source water temperature to maintain optimum system performance. vFlow

® allows the use of direct return piping, while eliminating external two-ways valves and automatic flow regulators. vFlow

systems are inherently selfbalancing.

vFlow

systems provide reduced water pumping power compared to traditional fixed-speed pumping and protects the unit against extreme operating conditions, extending the life of the compressor and air coil. Since vFlow

is built inside the unit, it also saves on installation time and makes for a very clean and compact installation. The HZ Series water-source heat pumps are designed to meet the challenges of today’s HVAC demands with one of the most innovative products available on the market.

Design Guide - HZH/HZV Series

UNIT FEATURES

• Sizes 024 (2 ton, 7.0 kW) through 070 (6 tons, 19.3 kW)

• EarthPure

(HFC-410A) refrigerant

• Copeland UltraTech™ two-stage unloading scroll compressors

• ECM variable speed communicating fan motor with soft start

• Exceeds ASHRAE 90.1 efficiencies

• Part load operation significantly lowers annual operating costs

• Galvanized steel construction with attractive black mat polyester powder coat paint and silver accents

• Stainless steel drain pan

• Foil-backed insulation in air handler section

• Unique double isolation compressor mounting with vibration isolation for quiet operation

• Insulated divider and separate compressor/air handler compartments

• TXV metering device

• Extended range (20 to 120°F, -6.7 to 48.9°C) operation

• Advanced Controls -

iGate

communicating control provides advanced unit functionality and comprehensive configuration, monitoring and diagnostic capabilities through digital communication links with the variablespeed fan motor, variable-speed source pump (or modulating valve) and communicating thermostat or

Configuration/Diagnostic tool.

• 7 temperature sensor inputs for system protection

and control

• Anti-short cycle and over/under voltage protection

• High pressure, loss of charge, and condensate

overflow protection

• LED fault and status indication at controller

• Service tool port for optional setup and

diagnostics at unit

• LonWorks, BACnet, Modbus and Johnson N2 compatibility options for DDC controls

• Field convertible discharge air arrangement for horizontal units

• Easy access control box

• Flush securely-mounted corner post water connections

(no backup wrench required)

• Unit Performance Sentinel performance

monitoring system

• Eight Safeties Standard

• Wide variety of options including ultra quiet sound insulation, extended range insulation, return air filter frames, variable and fixed speed circulating pumps, modulating motorized valves, hot water generator, and cupro-nickel water coil

Unit Features

Design Guide - HZH/HZV Series

iGate

Communicating Controls

iGate

Information gateway to monitor, control and diagnose your system

HZ Series is equipped with industry-first, iGate

–

Information Gateway – 2-way communicating system that allows users to interact with their geothermal system in plain English AND delivers improved reliability and efficiency by precisely controlling smart variable speed components. iGate

makes Tranquility

Digital series the easiest geothermal products to install and service.

Monitor/Configure

– Installers can configure HZ units from the iGate

communicating thermostat or configuration/diagnostic tool, including: Air flow, loop, water-flow option configuration, unit configuration, accessory configuration, and demand reduction (optional, to limit unit operation during peak times). Users can look up the current system status: temperature sensor readings and operational status of the blower and pump.

Precise Control

– The new DXM2 board enables intelligent, 2-way communication between the DXM2 board and smart components like the communicating thermostat, fan motor, and water pump. The DXM2 control can also directly control the modulating valve and accepts various feedback/input (see figure). The Intelligent

DXM2 board uses information received from the smart components and sensors to precisely control operation of variable speed fan, variable speed water pump (or modulating valve) to deliver higher efficiency, reliability and increased comfort.

Diagnostics

– iGate

takes diagnosing geothermal units to a next level of simplicity, by providing a dashboard of system and fault information, in plain English, on the iGate thermostat/ service tool. iGate

Service Warning warns the occupant of a fault and displays fault description, possible causes and current system status (temperature readings, fan RPM and water flow status) which may be reported to service personnel.

In iGate

Service Mode, the service personnel can access fault description, possible causes and most importantly, the conditions (temp, flow, i/o conditions, configuration) at the time of the fault. Manual Operation mode allows the service personnel to manually command operation for any of the thermostat outputs, blower speed, as well as pump speed or valve position from the thermostat, to help troubleshoot specific components.

With iGate

communicating system, users and contractors have a gateway to system information never before available.

7602-457

Communicating

Thermostat

7602-444

Diagnostic

Tool

Fan

Mot.

Modulating

Valve

Variable

Speed

Pump

Sensors

Two-Way Communication

One-Way Communication

PREVIOUS NEXT

POSSIBLE FAULT CAUSES

LOW WATER COIL TEMP

LOW WATER TEMP - HTG

LOW WATER FLOW - HTG

LOW REFRIG CHARGE - HTG

INCORRECT LT1 SETTING

BAD LT1 THERMISTOR

FAULT TEMPERATURE CONDITIONS

LT1 LOW WATER TEMP

HEAT 1 11:11 AM 11/14

Design Guide - HZH/HZV Series

vFlow

Internal Variable Water Flow Control

vFlow

Internal Variable Water Flow

Industry-first, Built-in vFlow

provide an ultra-highefficient, variable speed, internal water flow system. It saves installers time and labor by avoiding installing bulky external pumps, valves, or flow regulators. Multi-unit installations are also much simpler with vFlow

systems, as the units automatically adjust water flow across the system.

vFlow

is enabled by iGate

, which facilitates intelligent communication between the thermostat, DXM2 control, sensors and internal water pump/valve to make true variable water flow a reality.

vFlow

is available in four variations:

1. Low System Pressure Drop Modulating Valve – High CV motorized valve for central pumping.

2. High System Pressure Drop Modulating Valve – Motorized valve for higher pressure water system such as water well pumps.

3. Standard Head Variable Pump – multi unit/central pumping.

4. High Head Variable Pump – multi/individual unit pumping.

vFlow

delivers three main benefits:

1. Easier and quicker unit installation as the flow control is built in to the unit.

2. Superior reliability by varying the water flow to deliver more stable operation.

3. Higher cost savings by varying the flow (and pump watt consumption) to match the unit’s mode of operation.

Internal components

HZ units can be installed more easily and compactly than its predecessors because water-flow components are internal to the unit. It also saves installing contractors labor and time by eliminating the need for an external flow regulator or a bulky external pumping module.

Variable flow vFlow

technology enables variable water flow through the unit, with the DXM2 control adjusting the pump speed to maintain an installer-set loop delta T. By controlling the water flow, the system is able to operate at its optimal capacity and efficiency. vFlow

provides a lower flow rate for part load where units typically operate 80% of the time and a higher, more normal flow rate for full load operation.

Energy Savings with water circulation control

Units with vFlow

deliver higher operating cost savings by varying the water flow to match the unit’s operation

(ex: lower water flow when unit is in part load operation).

Lowering the flow results in lower energy consumption by the water pump (=higher cost savings) in vFlow

units.

In applications using vFlow

with internal variable-speed

Variable speed pump or motorized modulating valve delivers variable water-flow, controlled by DXM2 control, based on loop water ∆T.

(ECM) pump, the ECM pump uses fewer watts than a fixed speed (PSC) pump, even at full load (see chart).

The ECM pump excels in energy savings in part load, saving 70-80% watts compared to fixed speed pumps.

The ECM pump can operate with independent flow rates for heating and cooling, further saving more energy.

In applications using vFlow

with modulating valve, when the motorized modulating valve slows down the water flow during part load operation, the external pump consumes fewer watts, thus saving more energy.

Reference Calculations

Heating

LWT = EWT -

GPM x 500

LAT = EAT +

CFM x1.08

LWT = EWT +

Cooling

GPM x 500

LAT (DB) = EAT (DB) -

CFM x1.08

LC = TC - SC

S/T =

Design Guide - HZH/HZV Series

Selection Procedure

Legend and Glossary of Abbreviations

BTUH = BTU( British Thermal Unit) per hour

CFM = airflow, cubic feet/minute

COP = coefficient of performance = BTUH output/BTUH input

DB = dry bulb temperature ( °F)

EAT = entering air temperature, Fahrenheit (dry bulb/wet bulb)

EER = energy efficiency ratio = BTUH output/Watt input

MPT = male pipe thread

ESP = external static pressure (inches w.g.)

EWT = entering water temperature

GPM = water flow in U.S. gallons/minute

HE = total heat of extraction, BTUH

HC = air heating capacity, BTUH

HR = total heat of rejection, BTUH

HWC = hot water generator (desuperheater) capacity, Mbtuh

FPT = female pipe thread

KW = total power unit input, kilowatts

LAT = leaving air temperature, °F

LC = latent cooling capacity, BTUH

LWT = leaving water temperature, °F

MBTUH = 1000 BTU per hour

S/T = sensible to total cooling ratio

SC = sensible cooling capacity, BTUH

TC = total cooling capacity, BTUH

WB = wet bulb temperature (°F)

WPD = waterside pressure drop (psi & ft. of hd.)

Air Flow

Airflow (L/s) = CFM x 0.472

Water Flow

Water Flow (L/s) = gpm x 0.0631

Ext Static Pressure

ESP (Pa) = ESP (in of wg) x 249

Entering Air Correction Tables

Ent Air

66.2

Total Clg

Cap

0.852

0.974

1.000

1.004

1.034

1.069

Cooling Corrections

Sens Clg Cap Multiplier - Entering DB

70 75 80 80.6

85 90 95

Power

0.828 0.980

1.097 1.129

0.595 0.808

1.004 1.017 1.194

* 0.996

0.998

0.539 0.767

0.967 1.000 1.152

* * 1.000

0.501 0.740

0.939 0.955 1.124 1.233 1.276

1.002

0.636

0.810 0.844 1.016 1.136 1.220

1.005

0.514 0.612 0.826 0.973 1.127

1.010

Heat of

Rej

0.878

0.979

1.000

1.010

1.029

1.058

Water Pressure Drop

PD (kPa) = PD (ft of hd) x 2.99

Heating Corrections

Ent Air

Htg Cap Power

Heat of

1.059

1.019

1.000

0.995

0.980

0.967

0.947

0.981

1.000

1.010

1.037

1.063

1.100

1.032

1.000

0.989

0.960

0.934

ARI/ISO/ASHRAE 13256-1 uses entering air conditions of Clg- 80.6

F DB/66.2

F WB and Htg- 68

F DB/59

F WB shown in bold

Discontinued Standards ARI 320, 325, and 330 used entering air conditions of Clg- 80

F DB/67

F WB and Htg- 70

F DB

Air Flow Correction Table

Airflow

CFM Per Ton of Clg

300

325

350

375

400

425

450

% of

Nominal

75%

81%

88%

94%

100%

106%

113%

Cooling

Total Cap Sens Cap

1.019

1.013

1.007

1.004

1.000

0.998

0.997

0.902

0.928

0.953

0.977

1.000

1.023

1.047

Power

0.964

0.976

0.988

0.994

1.000

1.006

1.012

Heat of Rej

1.007

1.003

1.000

Htg Cap

0.957

0.968

0.979

0.989

1.000

1.011

1.021

Heating

400 CFM per ton of cooling capacity is nominal rated airflow for all models (bold print)

Use multipliers directly with unit data for correcting unit performance at other airflows than nominal

Power

1.061

1.040

1.020

1.010

1.000

0.997

0.994

Heat of Ext

0.922

0.946

0.970

0.985

1.000

1.015

1.030

Design Guide - HZH/HZV Series

Selection Procedure

Step 1

Determine the actual heating and cooling loads at the desired dry bulb and wet bulb conditions.

Step 2

Obtain the following design parameters: Entering water temperature, water flow rate in GPM, air flow in CFM, water flow pressure drop and design wet and dry bulb temperatures. Air flow CFM should be between 300 and

450 CFM per ton. Unit water pressure drop should be kept as close as possible to each other to make water balancing easier. Go to the appropriate tables and find the proper indicated water flow and water temperature.

Step 3

Select a unit based on total and sensible cooling conditions. Select a unit which is closest to, but no larger than, the actual cooling load.

Step 4

Enter tables at the design water flow and water temperature. Read the total and sensible cooling capacities (Note: interpolation is permissible, extrapolation is not).

Step 5

Read the heating capacity. If it exceeds the design criteria it is acceptable. It is quite normal for Water-

Source Heat Pumps to be selected on cooling capacity only since the heating output is usually greater than the cooling capacity.

Step 6

Determine the correction factors associated with the variable factors of dry bulb and wet bulb.

Corrected Total Cooling = tabulated total cooling x wet bulb correction.

Corrected Sensible Cooling = tabulated sensible cooling x wet/dry bulb correction.

Step 7

Compare the corrected capacities to the load requirements. Normally if the capacities are within 10% of the loads, the equipment is acceptable. It is better to undersize than oversize, as undersizing improves humidity control, reduces sound levels and extends the life of the equipment.

Step 8

When completed, calculate water temperature rise and assess the selection. If the units selected are not within 10% of the load calculations, then review what effect changing the GPM, water temperature and/or air flow and air temperature would have on the corrected capacities. If the desired capacity cannot be achieved, select the next larger or smaller unit and repeat the procedure. Remember, when in doubt, undersize slightly for best performance.

Example Equipment Selection For Cooling

Step 1 Load Determination:

Assume we have determined that the appropriate cooling load at the desired dry bulb 80°F and wet bulb 65°F conditions is as follows:

Total Cooling .....................................................22,100 BTUH

Sensible Cooling................................................16,500 BTUH

Entering Air Temp.................80°F Dry Bulb / 65°F Wet Bulb

Step 2 Design Conditions:

Similarly, we have also obtained the following design parameters:

Entering Water Temp.......................................................90°F

Water Flow (Based upon 10°F rise in temp.) ..........6.0 GPM

Air Flow......................................................................730 CFM

Step 3, 4 & 5 HP Selection:

After making our preliminary selection (TEH026 - Full Load), we enter the tables at design water flow and water temperature and read Total Cooling, Sens. Cooling and Heat of Rej. capacities:

Total Cooling...................................................24,200 BTUH

Sensible Cooling.............................................16,300 BTUH

Heat of Rejection............................................29,900 BTUH

Step 6 & 7 Entering Air and Airflow Corrections:

Next, we determine our correction factors.

Table Ent Air Air Flow Corrected

Corrected Total Cooling = 24,200 x 0.975 x 0.978 = 23,076

Corrected Sens Cooling = 16,300 x 1.096 x 0.926 = 16,543

Corrected Heat of Reject = 29,900 x 0.979 x 0.978 = 28,628

Step 8 Water Temperature Rise Calculation &

Assessment:

Actual Temperature Rise.............................................9.5°F

When we compare the Corrected Total Cooling and Corrected

Sensible Cooling figures with our load requirements stated in Step 1, we discover that our selection is within +/- 10% of our sensible load requirement. Furthermore, we see that our

Corrected Total Cooling figure is within 1,000 Btuh of the actual indicated load.

Submittal Data -

HZ Series

Design Guide - HZH/HZV Series

NOTES:

1. Residential class units come standard w/75 VA transformer stainless steel drain pan, ECM motor, and two stage scroll compressors. Units are painted polar ice.

2. Flow controller comes standard with variable speed pump, flushing valves, and expansion tank. Internal flow controller is only available when digit 12 option is selected for copper coax.

3. Motorized valve is two way modulating. If digit 11 is option

"5", digit 12 must be option "C" or "A". If digit 11 is option

"6" digit 12 must be "N" or "J".

Note: Above model nomenclature is a general reference. Not all configurations are available on all models. Consult engineering submittal for detailed information.

ClimaDry II Option Notes:

Unit minimum entering air temperature when in dehumidification or cooling mode is 65°F DB. Operation below this minimum may result in nuisance faults.

A themostat with dehimidification mode or a thermostatand separate himidistat or dehumidistat is required for activation and control of ClimaDry II.

Design Guide - HZH/HZV Series

Performance Data AHRI/ASHRAE/ISO 13256-1

ASHRAE/AHRI/ISO 13256-1. English (I-P) Units

Water Loop Heat Pump Ground Water Heat Pump

Heating 50°F

Model

Cooling 86°F Heating 68°F Cooling 59°F

HZ024 Part

HZ024 Full

HZ036 Part

HZ036 Full

HZ048 Part

HZ048 Full

HZ060 Part

HZ060 Full

HZ070 Part

HZ070 Full

Capacity

Btuh

19,200

25,000

27,400

37,700

36,300

48,600

46,300

61,500

53,000

68,300

EER

Btuh/W

19.8

17.4

20.1

17.9

18.8

16.8

18.7

16.2

16.8

15.1

Capacity

Btuh

23,600 7.0

31,400

32,600

45,700

42,200

56,700

54,700

77,400

64,600

85,300

6.0

6.5

5.8

6.1

5.1

6.0

5.4

5.2

4.8

22,000

28,500

30,700

42,100

41,800

55,000

53,100

71,500

60,800

77,700

Cooling capacities based upon 80.6

° F DB, 66.2

°F WB entering air temperature

Heating capacities based upon 68 ° F DB, 59 °F WB entering air temperature

Ground Loop Heat Pump ratings based on 15% antifreeze solution

All ratings based upon operation at lower voltage of dual voltage rated models

EER

Btuh/W

34.1

26.4

34.4

26.1

32.9

25.3

32.4

24.4

28.6

22.5

Capacity

Btuh

19,000

25,800

27,300

37,900

34,800

46,800

44,000 5.0

63,200 4.8

53,200 4.5

71,400 4.4

5.4

5.1

5.5

5.2

5.0

4.6

20,800

26,000

29,700

39,000

39,100

49,600

Ground Loop Heat Pump

Full Cool 77°F

Part Cool 68°F

Full Heat 32°F

Part Heat 41°F

EER

Btuh/W

28.0

19.9

Capacity

Btuh

16,800

20,200

COP

29.6

20.3

27.4

19.3

23,800

29,700

29,800

36,400

5.0

4.1

4.8

4.4

4.0

51,200

66,200

58,100

71,700

26.7

18.8

23.2

16.9

38,100

48,700

46,000

55,800

4.4

3.9

3.7

ASHRAE/AHRI/ISO 13256-1. Metric (S-I) Units

Water Loop Heat Pump Ground Water Heat Pump

Heating 10°C

Model

Cooling 30°C Heating 20°C Cooling 15°C

HZ024 Part

HZ024 Full

HZ036 Part

HZ036 Full

HZ048 Part

HZ048 Full

HZ060 Part

HZ060 Full

HZ070 Part

HZ070 Full

Capacity kW

5.63

7.32

8.03

11.05

10.64

14.24

13.57

18.02

15.53

20.02

EER

W/W

5.8

5.1

5.9

5.2

5.5

4.9

5.5

4.7

4.9

4.4

Capacity kW

6.91

9.20

9.55

13.39

12.36

16.61

16.03

22.68

18.93

25.00

7.0

6.0

6.5

5.8

6.1

5.1

6.0

5.4

5.2

4.8

6.45

8.35

9.00

12.34

12.25

16.11

15.56

20.96

17.82

22.77

Cooling capacities based upon 27 ° C DB, 19 °C WB entering air temperature

Heating capacities based upon 20 ° C DB, 15 °C WB entering air temperature

Ground Loop Heat Pump ratings based on 15% antifreeze solution

All ratings based upon operation at lower voltage of dual voltage rated models

9.6

7.4

9.5

7.2

EER

W/W

7.7

10.1

7.7

8.4

6.6

Capacity kW

5.57

7.56

8.00

11.10

10.20

13.71

12.90

18.52

15.59

20..93

5.0

4.6

5.0

4.8

5.4

5.1

5.5

5.2

4.5

4.4

11.46

14.53

15.01

19.40

17.03

21.01

Ground Loop Heat Pump

Full Cool 25°C

Part Cool 20°C

Full Heat 0°C

Part Heat 5°C

EER

W/W

Capacity kW

COP

6.09

7.62

8.70

11.43

8.2

5.8

8.7

5.9

4.92

5.92

6.97

8.70

5.0

4.1

4.8

4.4

8.0

5.7

7.8

5.5

6.8

5.0

8.73

10.67

11.17

14.27

13.48

16.35

4.4

4.0

4.4

3.9

3.7

Design Guide - HZH/HZV Series

Performance Data Selection Notes - vFlow

Models

Operation in Shaded Area: Closed Loop

Application

For operation in the shaded area, appropriate levels of a proper antifreeze should be used in systems with leaving water temperatures of 40°F or below and the JW3 jumper should be clipped. This is due to the potential of the

Antifreeze use recommended in this range. Also Clip JW3 on DXM2 board.

refrigerant temperature being as low as 32°F [0°C] with 40°F

[4.4°C] LWT, which may lead to a nuisance cutout due to the activation of the Low Temperature Protection. JW3 should never be clipped for systems without antifreeze.

WPD

PSI

CFM

Heating - EAT 70°F

HC kW COP HE LAT LWT HWC

Open Loop Application:

For operation in shaded area (below 40°F LWT) in open loop applications, ∆T (on DXM2) should be set such that the LWT

(=EWT - ∆T) doesn’t drop below 40°F. JW3 should NEVER be clipped for systems without antifreeze.

Performance Data Selection Notes - Models without vFlow

For operation in the shaded area when water is used in lieu of an antifreeze solution, the LWT (Leaving Water Temperature) must be calculated. Flow must be maintained to a level such

EWT

°F

20 is due to the potential of the refrigerant temperature being as low as 32°F [0°C] with 40°F [4.4°C] LWT, which may lead to a nuisance cutout due to the activation of the Low Temperature

Protection. JW3 should never be clipped for standard range

50 rearrange the formula for HE as follows:

LWT = 50 - 10 = 40°F

In this example, as long as the EWT does not fall below 50°F, the system will operate as designed. For EWTs below 50°F, higher flow rates will be required (open loop systems, for example, require at least 2 gpm/ton when EWT is below 50°F).

1.9

2.7

0.8

2.0

2.8

0.8

3.2

0.9

2.1

3.0

2.4

3.4

1.0

2.3

1.1

2.6

3.6

1.0

4.5

1.2

2.9

4.1

TD = HE / (GPM x 500)

4.5

6.3

1.8

1.9

4.6

6.5

1.9

7.4

2.1

4.9

7.0

5.6

7.9

2.2

5.2

2.5

5.9

8.4

2.3

10.3

2.8

6.6

9.4

TD = 22,500 / (4.5 x 500)

GPM

WPD

JW3 jumper is not clipped (see example below). Otherwise,

PSI FT TC SC kW HR EER be used in systems with leaving water temperatures of 40ºF

[4.4°C] or below and the JW3 jumper should be clipped. This equipment or systems without antifreeze.

Example:

At 50°F EWT (Entering Water Temperature) and 1.5 gpm/ ton, a 3 ton unit has a HE of 22,500 Btuh. To calculate LWT,

TD = 10°F

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

620

725

Airflow

CFM

620

725

620

725

HE = TD x GPM x 500, where HE = Heat of Extraction (Btuh);

TD = temperature difference (EWT - LWT) and GPM = U.S.

LWT = EWT - TD

5.8

7.0

3.5

5.8

7.0

3.5

7.0

3.5

5.8

7.0

5.8

7.0

3.5

5.8

3.5

5.8

7.0

3.5

7.0

3.5

5.8

7.0

22.5

22.9

20.7

21.0

21.4

21.7

21.6

21.9

22.9

23.3

23.0

23.3

21.9

22.2

22.4

22.7

22.9

23.3

23.1

23.4

23.2

23.5

22.7

23.0

22.2

22.5

22.4

22.7

22.5

22.8

19.3

19.6

20.1

20.4

20.3

20.6

18.7

18.9

19.3

19.6

19.5

19.8

18.0

Cooling - EAT 80/67°F

0.62

0.65

0.66

0.68

0.65

0.68

0.65

0.68

Sens/

Tot

0.63

0.65

0.63

0.65

4.5

2.3

3.4

4.5

2.3

3.4

4.5

0.77

0.78

0.97

0.98

0.90

0.91

0.88

0.89

0.69

0.70

0.67

0.68

0.85

0.86

0.78

0.80

0.65

0.66

0.61

0.62

0.6

0.61

0.74

0.75

0.58

0.59

0.57

0.58

0.56

0.57

1.10

1.12

1.03

1.04

1.01

1.02

1.18

1.19

1.10

1.12

1.08

1.10

1.25

3.4

4.5

2.3

3.4

4.5

2.3

Operation not recommended

14.7

14.0

14.7

14.0

14.7

14.2

14.9

14.5

15.3

14.6

15.4

13.9

14.6

14.2

14.9

14.3

15.0

13.7

15.5

16.3

14.8

15.6

15.1

15.9

15.2

16.0

15.5

16.3

15.5

16.3

15.3

16.1

15.5

16.3

15.1

15.8

15.1

15.9

15.1

15.9

15.4

16.2

0.75

0.77

0.73

0.76

0.73

0.76

0.71

0.73

0.76

0.72

0.75

0.72

0.75

0.69

0.72

0.69

0.71

0.72

0.74

0.71

0.73

0.68

0.70

0.67

0.70

0.67

0.70

0.73

1.3

2.9

725 20.4

1.2

1.3

0.4

2.9

1.0

850

725

20.7

20.9

1.1

1.2

0.4

1.0

850 21.2

1.1

0.8

23.1

23.4

23.6

23.9

23.7

24.0

22.7

23.0

23.1

23.4

23.2

23.6

22.3

2.5

5.8

725 11.3

1.1

2.5

5.8

850 11.5

1.1

0.7

1.7

725 12.5

1.1

0.7

1.7

850 12.7

1.1

1.3

3.0

725 13.1

1.1

1.3

3.0

850 13.2

1.1

2.0

4.6

725 13.4

1.1

2.0

4.6

850 13.5

1.1

0.5

1.2

725 14.5

1.2

0.5

1.2

850 14.7

1.1

1.0

2.4

725 15.2

1.2

1.0

2.4

850 15.4

1.1

1.6

3.8

725 15.6

1.2

1.6

3.8

850 15.8

1.1

0.4

1.0

725 16.6

1.2

0.4

1.0

850 16.8

1.1

0.9

2.0

725 17.5

1.2

0.9

2.0

850 17.8

1.1

1.4

3.2

725 18.0

1.2

1.4

3.2

850 18.2

1.1

0.4

1.0

725 18.8

1.2

0.4

1.0

850 19.0

1.1

0.8

1.8

725 19.8

1.2

0.8

1.8

850 20.1

1.1

0.8

1.2

25.1

25.5

24.0

24.3

24.4

24.8

24.6

24.9

25.3

25.6

25.3

25.6

24.8

25.1

25.4

25.1

25.5

25.2

25.5

25.2

25.6

25.2

25.6

24.1

24.4

24.3

24.7

24.4

24.7

1.8

2.7

29.4

21.4

23.8

24.5

33.4

34.1

25.9

28.6

35.3

37.9

38.3

30.7

38.3

39.2

39.8

17.5

19.5

20.1

15.9

17.5

18.0

14.4

725

850

725

850

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

710

825

22.7

23.0

13.8

14.2

14.4

14.6

24.4

24.6

25.3

25.6

25.9

25.3

25.6

26.3

26.6

26.9

26.3

21.5

21.7

22.4

22.7

23.3

23.5

23.8

19.1

19.3

19.5

20.4

20.6

21.2

21.5

16.1

16.2

16.7

16.9

17.1

18.3

18.5

1.2

1.1

1.2

1.1

1.22

1.19

1.23

1.19

1.24

1.20

1.24

1.20

1.18

1.15

1.18

1.15

1.21

1.18

1.22

1.18

1.15

1.12

1.15

1.12

1.16

1.12

1.18

1.14

1.05

1.02

1.09

1.06

1.09

1.06

1.09

1.06

1.25

1.21

1.26

1.22

1.26

1.22

1.26

1.22

1.27

1.23

1.27

1.24

1.27

2.9

3.1

3.2

3.4

3.3

3.5

3.4

3.6

7.4

7.7

8.6

8.9

9.1

9.5

9.4

9.8

84 16.7

1.2

82 16.6

1.2

86 22.4

1.4

84 22.1

1.3

87 24.6

1.4

84 24.4

1.4

87 25.8

1.4

85 25.7

1.4

3.7

10.6

89 30.6

1.6

3.9

10.9

86 30.3

1.5

3.9

11.3

89 33.4

1.6

4.1

11.7

87 33.1

1.6

4.0

11.7

90 34.8

1.7

4.2

12.1

87 34.6

1.6

4.2

12.6

91 38.8

1.8

4.4

13.0

88 38.4

1.7

4.4

13.5

92 42.0

1.8

4.7

14.0

89 41.8

1.8

4.5

14.0

93 43.8

1.9

4.8

14.4

90 43.6

1.8

4.7

14.8

94 46.9

1.8

5.0

15.2

91 46.5

1.9

5.0

15.8

95 50.7

1.9

5.3

16.3

92 50.4

2.0

5.1

16.4

96 52.7

1.9

5.5

18.1

98 59.4

2.1

5.8

18.5

94 59.1

2.1

5.6

52.5

55.0

LAT COP

12.3

12.6

13.0

13.3

13.2

13.5

14.5

14.8

8.2

8.4

10.1

10.3

10.7

10.9

11.1

90.9

88.2

91.8

89.0

92.1

89.2

93.9

90.8

85.1

83.2

87.8

85.5

88.5

86.1

88.8

86.3

15.2

15.5

15.4

15.7

16.5

16.8

17.3

17.6

94.8

91.6

95.1

91.9

96.6

93.2

97.7

94.1

17.5

17.8

18.4

18.8

98.0

94.3

99.2

95.4

5.15

5.36

5.35

5.57

19.3 100.4 5.52

19.6 96.4 5.75

19.5 100.7 5.57

4.73

4.93

4.78

4.98

4.93

5.13

5.10

5.31

4.08

4.25

4.42

4.30

4.47

4.56

4.75

3.25

3.38

3.66

3.81

3.97

3.86

4.02

19.9 96.7 5.80

20.3 101.8 5.73

20.7

21.2

21.6

21.5

97.7 5.97

103.0 5.90

98.7

103.4

21.9 99.0

21.2 103.0

21.7 98.7

22.2 104.3

6.15

5.95

6.20

5.91

6.15

6.08

22.6 99.9 6.33

22.5 104.7 6.13

22.9 100.2 6.38

22.2 104.3 6.08

2.0

5.5

17.4

93 54.6

2.0

6.0

18.6

19.1

61.7

61.5

2.1

2.2

100

Operation not recommended 110

120

Design Guide - HZH/HZV Series

Performance Data – HZ H/V/D 024 (Part Load), No vFlow

850 CFM Nominal (Rated) Airflow Heating, 750 CFM Nominal (Rated) Airflow Cooling

Performance capacities shown in thousands of Btuh

EWT

°F

100

110

120

GPM

WPD

1.5

2.1

0.9

2.1

0.9

1.5

0.9

1.4

2.0

1.0

1.5

2.1

1.5

2.2

1.0

2.1

1.0

1.5

1.0

1.5

2.1

1.5

2.2

1.0

2.2

1.0

1.5

1.0

1.6

2.2

1.6

2.3

1.0

2.3

1.0

1.6

1.0

1.6

2.3

1.7

2.5

1.0

2.6

1.0

1.7

1.1

1.8

2.6

2.9

1.1

4.5

2.3

3.4

4.5

3.4

4.5

2.3

3.4

4.5

2.3

3.4

4.5

2.3

3.4

4.5

2.3

3.4

4.5

2.3

CFM

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

660

750

15.4

15.7

15.9

16.2

13.4

13.7

14.1

14.4

14.5

14.7

16.0

16.3

16.9

17.2

17.4

17.7

14.6

14.9

19.6

20.0

17.5

17.8

18.4

18.7

18.9

19.2

19.8

20.2

20.3

20.7

18.2

18.5

19.1

19.5

20.3

20.7

21.1

21.5

21.9

18.9

19.3

23.1

23.5

21.5

21.9

22.2

22.6

22.5

22.9

23.2

23.6

23.1

23.5

22.4

22.9

23.3

23.1

23.6

22.8

23.2

22.5

22.9

23.0

23.5

0.7

0.9

0.4

0.9

0.4

0.7

0.4

0.6

0.9

0.4

0.7

0.9

0.7

0.9

0.4

0.9

0.4

0.7

0.4

0.7

0.9

0.7

0.9

0.4

1.0

0.4

0.7

0.4

0.7

1.0

0.7

1.0

0.4

1.0

0.4

0.7

0.4

0.7

1.0

0.7

1.1

0.4

1.1

0.4

0.7

PSI

1.2

0.5

0.8

1.1

COOLING - EAT 80/67 °F

11.9

12.7

12.1

12.9

11.3

12.1

11.5

12.3

11.6

12.4

12.1

13.0

12.5

13.4

12.7

13.6

11.6

12.4

13.7

14.6

12.7

13.6

13.1

14.1

13.4

14.3

13.8

14.8

14.0

15.0

13.0

14.0

13.5

14.4

14.0

15.0

14.4

15.4

14.5

15.6

13.4

14.3

14.9

16.0

14.5

15.5

14.8

15.8

14.9

15.9

14.7

15.8

14.5

15.5

14.9

15.9

15.0

16.0

14.6

15.6

14.0

14.9

13.5

14.5

14.9

16.0

1.53

1.56

1.47

1.49

1.87

1.91

1.74

1.77

1.67

1.71

1.45

1.48

1.34

1.36

1.28

1.31

1.65

1.68

1.05

1.07

1.27

1.30

1.17

1.19

1.12

1.14

1.02

1.04

0.98

1.00

1.2

1.22

1.10

1.12

0.98

1.00

0.90

0.91

0.85

0.87

1.12

1.14

0.66

0.67

0.86

0.88

0.79

0.80

0.75

0.76

0.61

0.63

0.59

0.60

0.76

0.77

0.69

0.70

0.60

0.61

0.55

0.56

0.54

0.55

0.67

0.68

21.1

21.4

21.7

21.9

22.2

23.2

23.6

24.0

17.7

18.3

18.6

18.9

19.1

19.6

19.9

20.8

14.1

15.2

15.4

16.0

16.2

16.4

16.6

17.4

11.5

11.7

13.0

13.2

13.6

13.8

13.9

25.9

27.1

27.5

28.1

28.5

26.7

27.1

28.5

24.3

24.6

25.8

26.2

26.7

27.1

25.5

28.9

29.5

29.9

11.0

11.1

12.6

13.5

13.6

8.9

18.8

13.7

15.7

16.8

16.9

10.1

10.8

7.2

8.1

8.6

19.4

20.7

20.8

15.3

17.5

20.7

23.6

25.2

16.9

34.9

24.9

28.2

28.3

30.0

37.7

39.1

39.2

29.6

33.1

19.8

20.2

20.0

20.4

20.2

20.6

21.8

22.2

20.3

20.6

21.0

20.9

21.3

22.4

22.8

22.7

23.1

21.0

21.4

21.5

21.9

22.3

22.7

22.9

23.3

23.2

23.6

21.8

22.2

24.4

24.9

22.7

23.2

23.3

23.8

23.6

24.1

24.9

25.3

25.0

25.5

23.6

24.1

24.2

24.6

25.0

25.5

25.3

25.7

25.3

25.8

24.4

24.9

24.3

24.8

25.3

25.8

25.2

25.7

25.1

25.6

2.9

2.6

2.7

2.3

3.4

3.0

2.5

2.6

2.2

1.9

2.0

1.4

2.6

2.0

1.6

1.2

1.1

0.8

1.5

6.5

6.6

5.8

5.9

4.7

4.8

4.3

4.4

5.4

5.5

3.4

3.5

5.3

5.4

4.3

3.7

3.8

HR EER HWC CFM

750

850

750 25.2

25.6

24.7

25.2

38.8

41.1

41.2

41.9

34.4

1.1

0.9

0.7

0.8

0.7

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

Interpolation is permissible, extrapolation is not. All performance data is based on the lower voltage of dual voltage units.

Performance stated is at the rated power supply, performance may vary as the power supply varies from the rated.

Table is with entering air of 80°F DB and 67°F WB in cooling, and 70°F DB in heating.

AHRI/ISO certified conditions are 80.6°F DB and 66.2°F WB in cooling and 68°F DB in heating.

Table does not reflect fan or pump power corrections for AHRI/ISO conditions.

See performance correction tables for operating conditions other than those listed above. See performance data selection notes for operation in the shaded areas.

Operation below 40°F EWT is based on a 15% methanol antifreeze solution.

Operation below 60°F EWT requires optional extended range insulated water and refrigerant circuits to avoid condensation within the unit cabinet.

HEATING - 70°F

1.09

1.14

1.09

1.14

1.09

1.13

1.09

1.13

1.12

1.16

1.11

1.16

1.11

1.15

1.10

1.14

1.16

1.20

1.15

1.19

1.14

1.18

1.13

1.17

1.25

1.20

1.23

1.18

1.22

1.17

1.22

1.1

1.2

1.1

1.14

1.10

1.16

1.09

1.13

1.09

1.14

1.09

1.14

1.10

1.14

1.11

1.17

1.12

14.8

14.9

15.4

15.7

16.2

16.9

17.3

17.5

18.0

18.5

19.3

97.1

94.2

98.7

95.7

19.9

20.1

20.6

99.6

96.5

20.4

100.0

93.3

90.8

94.3

91.7

95.6

92.9

96.4

93.6

89.7

87.6

90.2

88.1

91.5

89.2

92.6

90.3

86.0

84.4

86.8

85.0

87.2

85.4

88.8

86.8

20.9

96.8

21.8

101.9

22.4

98.5

22.7

102.9

23.3

99.5

21.5

101.5

22.1

98.2

23.1

103.5

23.8

100.0

24.0

104.7

24.7

101.0

22.7

103.0

23.3

99.5

24.4

105.1

25.1

101.4

25.4

106.4

26.1

102.6

11.5

12.0

12.3

12.4

12.8

13.4

13.8

14.4

7.6

8.9

9.2

9.5

9.8

9.9

10.2

11.2

HE LAT COP HWC

7.4

84.2

82.7

2.7

2.9

3.1

3.3

1.3

1.4

1.2

1.3

2.3

2.2

2.3

2.2

2.3

2.1

2.2

2.0

2.3

2.4

2.3

2.4

2.5

1.8

1.9

1.7

1.8

1.6

1.7

1.5

1.6

6.3

6.6

7.0

6.0

6.4

6.2

6.6

5.5

5.8

5.7

6.0

5.0

5.3

5.6

4.6

4.9

4.8

5.1

4.1

4.3

4.4

4.6

3.7

3.9

4.2

3.3

3.5

3.4

3.6

6.8

7.2

7.6

7.4

7.8

6.9

7.3

7.1

7.5

6.8

7.2

6.6

6.9

Design Guide - HZH/HZV Series

Performance Data – HZ H/V/D 024 (Full Load), No vFlow

950 CFM Nominal (Rated) Airflow Heating, 850 CFM Nominal (Rated) Airflow Cooling

EWT

°F

GPM

PSI

1.4

0.5

0.6

0.9

1.3

0.9

1.4

0.6

0.9

1.4

0.6

0.9

1.0

1.5

0.6

1.0

1.6

0.6

1.1

1.8

1.9

0.7

WPD

3.1

1.2

1.3

2.1

2.0

3.1

2.1

3.2

1.3

2.2

3.3

1.3

2.2

3.4

3.5

1.3

2.3

3.6

3.8

1.4

1.5

2.5

2.6

4.0

4.4

1.6

CFM

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

750

850

20.7

21.1

21.3

21.6

18.2

18.5

19.1

19.4

19.5

19.9

21.3

21.7

22.5

22.9

23.1

23.5

19.7

20.0

25.7

26.1

23.1

23.5

24.3

24.7

24.9

25.3

26.0

26.4

26.5

27.0

23.9

24.4

25.1

25.5

26.4

26.9

27.5

28.0

28.5

24.8

25.2

29.9

30.4

27.9

28.4

28.8

29.3

29.2

29.7

30.1

30.6

30.0

30.6

29.1

29.6

29.7

30.2

30.1

30.6

29.8

30.3

29.4

29.9

29.8

30.4

COOLING - EAT 80/67 °F

SC kW

14.6

15.7

14.8

15.9

13.7

14.7

14.0

15.0

14.1

15.2

14.8

15.9

15.3

16.4

15.5

16.7

14.2

15.2

16.7

17.9

15.5

16.7

16.1

17.3

16.3

17.5

16.8

18.1

17.0

18.3

15.9

17.1

16.4

17.7

17.0

18.3

17.5

18.8

17.7

19.0

16.3

17.5

18.2

19.6

17.6

18.9

17.9

19.3

18.1

19.4

18.1

19.5

18.0

19.3

18.0

19.4

18.2

19.6

18.1

19.4

17.6

18.9

17.3

18.6

18.2

19.6

2.03

2.11

1.96

2.03

2.46

2.55

2.28

2.37

2.20

2.28

1.95

2.02

1.82

1.88

1.75

1.82

2.18

2.26

1.50

1.55

1.75

1.81

1.63

1.69

1.57

1.63

1.47

1.53

1.42

1.47

1.7

1.73

1.55

1.61

1.43

1.48

1.33

1.38

1.29

1.33

1.58

1.64

1.07

1.11

1.30

1.35

1.21

1.26

1.17

1.22

1.01

1.05

0.98

1.02

1.19

1.23

1.11

1.15

0.99

1.03

0.93

0.96

0.90

0.93

1.08

1.12

27.7

28.2

28.0

28.6

26.6

27.2

26.9

27.5

27.1

27.7

28.0

28.6

28.7

29.3

29.0

29.7

27.1

27.7

30.8

31.4

29.0

29.7

29.8

30.4

30.2

30.9

31.0

31.6

31.4

32.0

29.6

30.2

30.4

31.0

31.3

32.0

32.7

32.4

33.1

30.2

30.8

33.5

34.2

32.3

33.0

32.9

33.6

33.1

33.8

33.5

34.2

33.3

34.0

33.1

33.8

33.4

34.1

33.4

34.1

32.8

33.6

32.4

33.1

33.5

34.2

EER HWC CFM