Post on 26-Mar-2022
2014 Guam Tropical Energy Code -‐ Mechanical GTEC Conference William G Miller Jr 10:45-11:45, March 3 & 4, 2015
PART 5: Ventilation and Air Conditioning Applicable to all equipment providing cooling,
dehumidification, and ventilation needs to a building
Mandatory Provisions for Unitary Equipment such as window units, package units, and DX-split units that are air cooled or water cooled, that serve a single, and are < 65,000 BTU
Programmable T-STAT W/ 7-DAY timer and nighttime setback (Unless < 6,800 BTUH OR operates continuously)
Hotel/Motel shall have auto shut off when door and windows are open US DOE Energy label such as Energy Star Insulated Refrigerant Piping and Ducts
RECOMMENDATIONS Condenser Coil Corrosion Coating:
Guam’s salt spray and high humidity can deteriorate the performance and efficiency of the equipment. Although not mandated, it is recommended to provide corrosion coating on condenser coating and performance preventative
EQUIPMENT PERFORMANCE REQUIREMENTS UNITARY EQUIPMENT – T 503.2.3(1), (2) PACKAGE AIR TERMINALS – T 503.2.3(3) BOILERS, GAS AND OIL-FIRED – T 503.2.3(5) CONDENSING UNITS – T 503.2.3(6) WATER CHILLING PACKAGES – T 503.2.3(7)
PART 6: SERVICE WATER HEATING Describes the Minimum Efficiency for domestic hot
water heaters, controls, and piping insulation Efficiencies per Table 601 and Energy Star compliant Aqua stat shall allow for a temperature set point of 110
degrees F for dwelling units and public lavatories, and 90 degrees F for other occupancies
Equipment must have a integral Heat Trap or shall have a field installed Het Trap if non-circulating
Piping shall be insulated (Continuously if circulating and the first 8 feet if non-circulating)
Provide controls to turn OFF circulating systems when hot water system is not in use
NO ENERGY CODE versus GTEC Effects of cooling load requirements with no roof
insulation:
NO ENERGY CODE versus GTEC Effects of cooling load requirements with applying
reflective roof paint:
NO ENERGY CODE versus GTEC Effects of cooling load requirements by applying R13 to
roof as required by GTEC:
SUMMARY Typical 3-bedroom house ( ~1,400 sf) without the
GTEC would require 64,500 BTUH of cooling versus 50,200 BTUH with the GTEC
An additional 14,300 BTU’s per Hour at peak If the average home owner uses cooling for 8 hour per
day for 365 days in a year, that is 41,756,000 BTU’s more per year
GTEC versus 2007 ASHRAE 90.1 Standard
30 % Energy Reduction of base line ASHRAE 90.2 standard Effects of cooling load requirements by applying R30 to
roof and R19 to the walls:
Thank You