Executive Summary. October 1, Created for: Report Demo Site 123 Any Street Anywhere, PA 19047

Transcription

1 Executive Summary October, 2 Created for: 23 Any Street Anywhere, PA 947

2 Definitions Evaporating Temperature (ET) is the saturation temperature of the refrigerant as it boils in the evaporator. Condensing Temperature (CT) Condensing Temperature over Ambient (COA) Superheat (SH) is the saturation temperature of the refrigerant as it condenses in the condenser. is the difference between the condensing temperature (CT) and the outdoor air temperature (AMB). Condensing Over Water Temperature (COW) is the difference between the condensing temperature (CT) and the entering water temperature (EWT) in water cooled units. is the difference between the suction line temperature (ST) and the evaporating temperature (ET). is the difference between the condensing temperature (CT) and the liquid temperature (LT). is an estimate of an air conditioner's efficiency as a percentage of what its efficiency could be (while running under the same driving conditions) if it was serviced to operate like new. EI can be used to directly estimate the impact of poorly performing air conditioners on utility bills. is an estimate of an air conditioner's total capacity as a percentage of what its capacity could be (while running under the same driving conditions) if it was serviced to operate like new. is the estimated annual energy savings ($/yr) that could be achieved for a unit if the performance was improved through service or repair, bringing the EI and CI measurements back to or near %.

3 Site Summary Information Contractor: Action Air Conditioning Co. Site: 23 Any Street Anywhere, PA 947 Number of units: Number of circuits: Total Capacity (tons): Total circuits tested in: Total circuits tested out: Total circuits tested in only: 2. Potential Annual 79% 8% $,274 Current 94% $48 $,26 % available savings: 88% EI and CI are capacity weighted average values. Diagnosis Circuits % Current Circuits % Acceptable Low-side HT Problem High-side HT problem Over charged Under charged Other problem % 2% 2% 2% 2% 2% % % % % % % Inoperable % % Unit Make Serial Number Refrig. Expansion Device Capacity (tons) Lennox LGA2H2BH3G 6E744 TxV. 2 Carrier YQ33 T399 Fixed 2. 3 Lennox GCS Y 6E94 TxV 6. 4 Carrier 38AK G89 TxV 7. Rheem RKKA-A48CK3E R639ADAAF3336 Fixed 4. This table reflects the most recent test data available for each circuit of the unit Difference between the goal and value Unit Circuit Job Diagnosis EI (%) CI (%) COA ET SH SC POST STG * 2 POST STG * 3 POST STG * Grey shaded area represents values that are outside the optimum performance range.

4 This table reflects the most recent test data available for each circuit of the unit Difference between the goal and value Unit Circuit Job Diagnosis EI (%) CI (%) COA ET SH SC 4 POST STG * POST STG * Grey shaded area represents values that are outside the optimum performance range.

5 of Rated EER: AC Package Lennox LGA2H2BH3G 6E744 TxV tons DANGER/Leak Check and : Add charge because this is a TxV unit with a cold evaporator and low subcooling. 8% 76% 9% 9% $32 Potential Annual $64 $32 The following values were used for Potential Annual calculation: Annual Runtime 2 hrs/year, Electrical Cost 3 cents/kwh. Diagnostics 46.8 F 32.4 F Lo 42.8 F 39.6 F Ok- 2. F 3.6 F Hi 2. F.4 F Ok- 8.9 F 9.9 F Ok- 7.9 F 7. F Ok. F -. F Lo. F. F Ok+ 7. F 6.6 F 93.9 F. F 8. psig 68. psig 79. psig 99. psig 6. F 6. F 64. F. F 94. F 9. F 84. F 84. F 7. F 69. F

6 2 of Rated SEER: HP Package Carrier YQ33 T399 Fixed 2. tons DANGER/Tune up lowside: Low-side heat transfer problem and add charge because ET is low, SH is ok and SC is less than goal. Fixing the low-side transfer problem will increase SH, so re-test after repairs to see if charge is needed to make SH ok. Consider increasing indoor airflow by replacing filters, cleaning fan and evap. coil, adjusting fan belt, and/or opening registers. 84% 79% 98% 92% $74 Potential Annual $9 $6 The following values were used for Potential Annual calculation: Annual Runtime 2 hrs/year, Electrical Cost 3 cents/kwh. Diagnostics 4.7 F 26.8 F Lo 4. F 36.8 F Ok- 9. F.2 F Ok-.4 F.2 F Ok 26.4 F 8.6 F Ok- 27. F 2.7 F Ok- 4. F.6 F Ok- 3.8 F 3.7 F Ok 9.9 F 8.2 F 97.6 F.7 F. psig 64. psig 89. psig 2. psig 6. F 6. F 28. F 48. F 87. F 88. F 79. F 8. F 74. F 72. F

7 3 of Rated SEER: AC Package Lennox GCS Y 6E94 TxV 2 6 tons DANGER/Tune up high-side: High-side heat transfer problem because condenser is hot and there is no indication of over charge. Also consider doing a standing pressure test for non-condensibles to explain these results. 74% 8% 92% $27 Potential Annual $36 $36 The following values were used for Potential Annual calculation: Annual Runtime 2 hrs/year, Electrical Cost 3 cents/kwh. Diagnostics 44.8 F 37. F Ok F 39.6 F Ok- 2. F 22. F Ok+ 2. F 6.4 F Ok- 2.6 F 32.8 F Hi 2.6 F 6.4 F Ok-. F 7.8 F Ok-. F 8.4 F Ok- 8. F 7. F 22.8 F 6.4 F 6. psig 68. psig 27. psig 2. psig 63. F 63. F 6. F 6. F. F 98. F 9. F 9. F 74. F 73. F

8 4 of Rated SEER: AC Split Carrier 38AK G89 TxV 7. tons DANGER/Recover Charge: Recover charge because this is a TxV unit with a hot condenser and high subcooling. 68% 8% $48 Potential Annual $8 $38 The following values were used for Potential Annual calculation: Annual Runtime 2 hrs/year, Electrical Cost 3 cents/kwh. Diagnostics 4.2 F 44.3 F Ok- 2.6 F. F Ok- 2. F.7 F Lo 2. F. F Ok- 2.3 F 38.3 F Hi 2.4 F 2. F Ok. F 8.3 F Hi. F. F Ok+. F.6 F 33.3 F 2. F 7. psig 8. psig 3. psig 26. psig 74. F 72. F 46. F 66. F. F. F 9. F 9. F 78. F 7. F

9 of Rated SEER: AC Package Rheem RKKA-A48CK3E R639ADAAF3336 Fixed 4 tons DANGER/Major : Refrigerant flow restriction because ET is less than goal and SH and SC are high and COA is less than goal. 83% 74% 9% $7 Potential Annual $96 $26 The following values were used for Potential Annual calculation: Annual Runtime 2 hrs/year, Electrical Cost 3 cents/kwh. Diagnostics 47.6 F 3.6 F Lo 4.8 F 43. F Ok- 9.3 F 3.4 F Hi 3.9 F 6. F Ok F 2. F Ok F 26.2 F Ok-.8 F 2. F Hi.8 F 3.2 F Ok+.3 F.9 F 8. F 4.2 F 7. psig 73. psig 22. psig 24. psig 69. F 66. F 63. F 9. F 88. F. F 88. F 88. F 78. F 74. F