SGM-SF_2017with 12/20 Revisions

All Systems (revised 12/20) 31 ANSI/AARST SGM-SF 2017 (with 1220 revisions) Soil Gas Mitigation Standards for Existing Homes c) Battery operated components shall not be used unless they are equipped with a low-power warning feature; d) Components that require electricity for indication of system failure shall be on non-switched circuits and designed to reset automatically when power is restored after power supply interruptions; and e) Components that require electricity for indication of system failure shall not be powered by the same branch circuit as the mitigation system fan(s). Exception: Where the monitoring system has an independent means, such as a battery backup system, that actively alerts occupants or other individuals of component failure or branch circuit deactivation. Note —Section 8.3 is NOT part of the 12/20 revision updates Until updates are complete, the following previously published provisions remain in effect. 8.3 Electrical The electrical service for ASD Fans shall comply with the following provisions in addition to all other electrical code requirements. 7 8.3.1 Disconnect required For ASD fans, a means of electrical disconnect shall be provided for in the line of sight and within 6 feet (1.8 m) of the mitigation system fan(s). Exception: A switch remote from the fan location shall be permitted when concerns sufficiently warrant preventing inadvertent deactivation of the fan. 8.3.2 Labels required (disconnects) Labeling shall comply with Section 8.4.5. 8.3.3 Protection from shock All outdoor wiring for ASD fans shall be protected in conduit, unless otherwise permitted by local code, and shall not be a plug disconnect. 8.3.4 Not allowed Wiring shall not be located in or chased through the ASD duct piping. Note—12/20 revision updates continue to include the remaining portions for Section 8. 8.4 Labeling 8.4.1 Label materials and lettering All labels shall be made of durable materials. All label lettering and other annotation on systems shall be of a color in contrast to the color of the background on which the lettering is applied. Theminimum lettering size shall conform to requirements a) and b) of this Section 8.4.1 . a) Label titles shall be with lettering of a height not less than 1/4 inch (6 mm). b) Additional informational text shall be with lettering of a height not less than 1/8 inch (3 mm). 8.4.2 Primary labels A system description label shall be placed on a primary component of each system, such as on duct piping near an ASD fan monitor, or within 12 inches (30 cm) of the electric service panel or other prominent location. Systemmonitor devices shall have a label on or in close proximity to the mechanism that describes how to interpret the monitor and actions to take if a monitor indicates fan failure or degraded fan performance. 7 As required by local statutes. For further information, see the National Electric Code® (NEC) as published by NFPA.