## ENERGY STAR ® 

## Program Requirements

Product Specification for Residential

Refrigerators

, Freezers, and Refrigerator

- Freezers

Final Draft Test Method to Validate

Demand Response

Rev. March

- 201 3

ENERGY STAR Final Draft Test Method to Validate Demand Response (Rev. March

- 201 3 ) Page 1 of 5 

## 1 OVERVIEW 1

The following test method shall be used for determining product compliance with requirements for 2

Demand Response (DR) functionality in the ENERGY STAR Eligibility Criteria for Connected 3

Refrigerators, Freezers, and Refrigerator

- Freezers

. 4



## 2 APPLICABILITY 5

This test method is applicable to refrigerators, refrigerator

- freezers, and freezers intending to meet the 6

Connected appliance requirements in the ENERGY STAR Version 5.0 Program R equirements

. 7



## 3 DEFINITIONS 8

Unless otherwise specified, all terms used in this document are consistent with the definitions in the 9

ENERGY STAR Eligibility Criteria for Residential Refrigerators and Freezers Version 5 .0 and in the DOE 10

Test Procedure in 10 CFR Part 430

, Subpart B

, Appendix A and Appendix B (DOE Test Procedure)

. 11

A) Utility Equivalent Communication Device : Device c apable of communicating with the connected 12

appliance and emulating signals sent from a utility. It will be controlled by the te chnician and will allow 13

the technician to deliver the Delay Appliance Load and Temporary Appliance Load Reduction signals. 14

B) Communication Module (Appliance) : A built

- in or external device that enables appliance bi

- directional 15

communication with the Utility Equivalent Communication Device

. 16

C) Connected Signal Simulation Hardware : Self

- contained or Power Computer (PC) based hardware 17

that will allow the operator to execute necessary communication s and commands and receive 18

necessary feedback from the Unit Unde r Test (UUT). 19

D) Consumer Override : The capability for an end

- user to cancel a product’s response to a DR signal. 20

E) Signals : C ommunications to a connected product that provide information or indicat e that it should 21

modify its operation. Signals include, but are not limited to, D elay A ppliance L oad (DAL), Temporary 22

Appliance Load Reduction (TALR)

, and time

- based pricing

. 23

F) Delay Appliance Load Capability : Capa bility of an appliance to reduce its average energy input over a 24

specified time period. The delay load command provides the start time and duration of the delay load 25

time period

. 26

G) Temporary Appliance Load Reduction Capability : Capa bility of an appliance to reduce its average 27

energy input over a short specified time period

. The temporary load r e duction comma nd provides the 28

start time and d uration of the temporary load reduction time period

. 29

H) Acronyms : 30

• DR : Demand Response 31

• DAL : Delay Appliance Load 32ENERGY STAR Final Draft Test Method to Validate Demand Response (Rev. March

- 201 3 ) Page 2 of 5 • TALR : Temporary Appliance Load Reduction 33

• Wh : Watt Hours 34

• W : Watts 35

• UUT : Unit Under Test 36



## 4 TEST REQUIREMENTS 37

Unless otherwise specified, all test conditions and requirements shall be identical to 10 CFR Part 430, 38

Subpart B, Appendices A or B, Section 2. 39



## 5 PRE

- TEST UUT CONFIGURATI ON 40



### 5.1 

### General Configuration 41

The UUT shall be set up as described in 10 CFR Part 430, Subp art B, Appendices A or B , Section 3. 42



### 5.2 

### Communication Setup 43

The communication device shall be set up in accordance with manufacturer installation instructions. The 44

communication devi ce setup described below applies only to the Demand Response tests in Secti ons 7 45

and 8. 46

A) Connect the Communication Module to the U tility E quivalent C ommunication D evice via wired or 47

wireless connection depending on the module’s capability

. A wireless connection is preferred if both 48

are available. 49

B) Ensure that the module is properl y connected , secured according to manufacturer instructions, and 50

can both receive and send data to the U tility E quivalent C ommunication D evice

. 51



### 5.3 

### UUT Steady State Stabilization 52

A) All compartment temperature controls shall be set at their median position

, as described for the “first 53

test” in 10 CFR 430, Subpart B, Appendix A or Appendix B, S ection 3.2.1

. 54

B) Prior to the start of testing, the UUT shall be stabilized according to 10 CFR Part 430, Subpart B, 55

Appendix A Section 2.9 or Appendix B Section 2.7. 56

C) The ice maker shall be on with harvesting inoperative , as described in Section 2.2 of the DOE Test 57

Procedure

. T he ice maker shall remain in this inoperative state throughout testing unless otherwise 58

specified

. 59

D) If the UUT is equipped with an automatic ice make r, w ater line installation is required in accordance 60

with the printed instructions supplied with the cabinet or water line for the Ice Maker Deferral test. 61



## 6 BASELINE ENERGY CONS UMPTION 62



### 6.1 

### DOE B aseline 63

A) Measure the energy consumption, EP 1 , in Wh, and length of time, T 1 , in minutes, as described in 64

Section 4.1 of the DOE Test Procedure. Conduct the test at the median temperature set point

, as 65

described in Section 3.2.1 of the DOE Test Procedure, with the anti

- sweat heater switch, if present , in 66

the “ off ” position

. EP 1 and T 1 shall be represented in the DR calculations by EP BL and T BL

. 67

B) If the UUT has automatic defrost as specified in Section 4.2 of the DOE Test Pro cedure, and does not 68

require the use of the two part test described in S ections 4.2.1 through 4.2.3 : 69ENERGY STAR Final Draft Test Method to Validate Demand Response (Rev. March

- 201 3 ) Page 3 of 5 1) S elect a stable test period consistent with that of the first part test of a Long

- time Automatic 70

Defrost unit as described in Section 4.2.1 of the DOE Test Procedure. 71

2) Identify the energy consumed during the selected test period , EP AD , in Wh, and the duration of 72

the selected test period, T AD , in minutes. EP AD and T AD shall be represented in the DR calculations 73

by EP BL and T BL

. 74



## 7 DELAY APPLIANCE LOAD (DAL) TEST 75

All connected features and network modes must be setup and enabled per Section 5.2 , and t he an ti

76

sweat heater s witch, if present

, must be in the “ off ” position

, during the Delay Appliance Load Test. As 77

specified in the ENERGY STAR Program Requirements for Residential Refrigerators and Freezers 78

Version 5.0, only one of the following tests in Section 7 are required for complying with Delay Appliance 79

Load requirements. 80



### 7.1 

### Delay Appliance Load Test

- Ice Maker Deferral 81

A) Activate the ice maker harvest capabilities. 82

B) Ensure that the ice maker is properly activated through the successful production of ice. 83

C) Once ice making operations are activated, empty the ice bin, if necessary, and initiate a four

- hour 84

DAL signal. 85

D) Ensure that all ice maker operations are deferred beyond the test period by confirming the ice bin is 86

empty at the end of the four

- hour test period. 87

E) Verify no precool cycle (as defined in Section 4.2.1.1 of the DOE Test Procedure) occurs and the 88

defrost heater is off during the entire duration of the four

- hour DAL test period

. 89

F) For the remainder of testing

, return the ice maker to its inoperative state as described in Section 90

5.3.C and empty the ice bin if ice is present. 91



### 7.2 

### Delay Appliance Load Test

- Percent Reduction 92

A) Initiate a four

- hour DAL signal within five minutes after the start of a compressor on cycle

. 93

B) Measure and record the energy consumption, EP DL , during the four

- hour DAL test period. 94

C) Verify no precool cycle occurs and the defrost heater is off during the entire duration of the four

- hour 95

D AL test period

. 96



## 8 TEMPORARY APPLIANCE LOAD REDUC TION (TALR) TEST 97

All connected features and network modes must be setup and enabled per Section 5.2 , and the anti

98

sweat heater s witch, if present

, must be in the “o ff ” position , during the Temporary Appliance Load 99

Reduction Test

. 100



### 8.1 

### T emporary Appliance Load Reduction Test 101

A) Initiate a 10

- minute TALR signal within five minute s after the start of a compressor on cycle. 102

B) Measure and record the energy consumption, EP TALR , during the 10

- mi nute TALR test period. 103

C) Verify no precool cycle occurs and the defrost heater is off during the entire duration of the 10

- minute 104

TALR test period

. 105ENERGY STAR Final Draft Test Method to Validate Demand Response (Rev. March

- 201 3 ) Page 4 of 5 

## 9 CALCULATIONS 106



### 9.1 

### DR Baseline Average Power 107

Calculate the average DR baseline power, AP BL

. 108

Equation 1: DR Baseline Average Power 109

AP BL = ( EP BL × 1000 )

� T BL

60 �

Where: 110

• AP BL is the average baseline power in W 111

• EP BL is the baseline energy consum ption in kWh , as 112

described in section 6.1 113

• 1000 is the conversion factor from kWh to Wh 114

• T BL is the baseline time period in minutes , as described in 115

section 6.1 116

• 60 is the conversion factor from minutes to hours 117



### 9.2 

### Delay Load Period Average Power 118

Calculate the average delay load power, AP DL

. 119

Equation 2 : Delay Load Average Power 120

AP DL = ( E P DL × 1000 )

4

Where: 121

• AP D L is the average delay load power in W 122

• EP D L is the delay load energy consum ption in kWh , as 123

described in section 7.2 124

• 1000 is the conversion factor from kWh to Wh 125

• 4 is the delay load duration in hours 126



### 9.3 

### Percent Delay Load Average Power Reduction 127

Calculate the percent average delay load power reduction compared to the DR B aseline Test

. 128

Equation 3 : Percent Delay Load Average Power Reduction 129

Percent Average Power Reduction = ( AP BL − AP DL )

AP BL × 100%

Where: 130

• AP BL is the average baseline power in W

, as calculated in 131

section 9 .1 132

• AP DL is the average delay load power in W, as calculated 133

in s e ction 9 .2 134



### 9.4 

### Temporary Appliance Load Reduction Average Power 135

Calculate the average TALR power, AP TALR

. 136

Equation 4 : TALR Average Power 137ENERGY STAR Final Draft Test Method to Validate Demand Response (Rev. March

- 201 3 ) Page 5 of 5 AP TALR = ( EP TALR × 1000 )

0

. 1667

Where: 138

• AP TALR is the average TALR power in W 139

• EP TALR is the TALR energy consumption in kWh , as 140

described in section 8.1 141

• 0.1667 is the time duration of the TALR period in hours 142



### 9.5 

### Percent TALR Average Power Consumed 143

Calculate the percent average TALR power consumed compared to the DOE Baseline Test

. 144

Equation 5 : Percent TALR Average Power Consumed 145

Percent Average Power Consumed = AP TALR

AP BL × 100%

Where: 146

• AP BL is the average baseline power in W

, as calculated in 147

section 9

. 1 148

• AP TALR is the average TALR power in W, as calculated in 149

section 9 .4 150



## 10 REFERENCES 151

A) 10 CFR Part 430, Subpart B, Appendix A. Uniform Test Method for Measuring the Energy 152

Consumption of Electric Refrigerators and Electric Refrigerator

- Freezers. 153

B) 10 CFR Part 430, Subpart B, Appendix B. Uniform Test Method for Measuring the E nergy 154

Consumption of Freezers. 155

C) ENERGY STAR Program Requirements for Residential Refrigerators and Freezers

- Eligibil ity Criteria 156

Version 5.0 Draft 3 p ublished September 201 2

. 157