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Q. Under which code are HVAC zone controls regulated? To what standard are they required to be listed? Same question for thermostats.
A. Mechanical, energy, and electrical.
(January 23, 2003 Tri-County Code Forum; approved by state electrical code chief for statewide application)
Q.Under which code are HVAC zone controls regulated? To which standards are they required to be listed? Same question for thermostats.
(From the November 2002 Mechanical Code Forum)
A. ORS 479.610 requires product certification for electrical products. Implementation is through OAR 918-261-0200. The applicable standards would be those appropriate to the product. Call UL for
further details, (800) 595-9845. Watch for changes to ORS 479.610 through implementation of House Bill 2717.
(May 1, 2003 Tri-County Code Forum; approved by state electrical code chief for statewide application)
Q. Why is a contractor with an HVAC/ restricted-energy license allowed to purchase and use electrical minor labels, but not allowed to purchase and use an electrical permit issued by the jurisdiction
when installing, replacing, or repairing a furnace not exceeding 20 amps?
Scenario: A contractor with an HVAC restricted-energy electrical license was replacing a furnace not exceeding 20 amps. The owner requested an inspection. The contractor went to the jurisdiction
and was sold a mechanical permit. Finally, the contractor had to purchase and use both a mechanical permit and an electrical minor label to complete the replacement.
A. A limited-energy electrical contractor cannot use a line-voltage HVAC permit unless the contractor is also licensed as an LHR. And the scope of work is limited to that allowed under the licenses
held. For example, a restricted-energy contractor is not allowed to perform an electrical installation of a line voltage system.
(May 1, 2003 Tri-County Code Forum; approved by state electrical code chief for statewide application)
Q. If an air conditioner is installed in a residential setting, and the only outlet available is a non-GFCI outlet within 25 feet that was installed according to code in the 1960s, will this outlet
satisfy the code requirement for A/C service outlet?
A. Yes, it does satisfy the requirement of code but not the intent. OAR 918-305-0000 addresses requirements for existing installations and would not require the existing receptacle to be changed;
however, (NEC) Article 527.6 says that GFCI protection is required for a receptacle used for temporary wiring regardless of whether it is a permanently installed receptacle. Use of a GFCI cordset
or personnel protective GFCI device would meet the requirement without changing the existing receptacle to a GFCI.
(May 1, 2003 Tri-County Code Forum; approved by state electrical code chief for statewide application)
Q. When changing out an existing air conditioner with a like unit when there is no outside outlet available except the outlet in the garage, which is less than 25 feet, will a new outlet be required?
A. Yes. New installations must be brought up to code. Refer to OAR 918-305-0000 and 210.63. A receptacle located in a garage behind a door would not meet the intent of this code requirement. If
you were replacing a part within the existing HVAC system, no outlet modifications would be necessary.
(May 1, 2003 Tri-County Code Forum; approved by state electrical code chief for statewide application)
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