# 261.61 Warning tag: Class C condition.

- **operation:** document
- **citation:** 16 NYCRR 261.61
- **title:** 261.61 Warning tag: Class C condition.
- **source type:** regulation
- **agency:** New York State Public Service Commission
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** Not available
- **summary:** Piping Beyond the Meter (Natural Gas). (a) A Class C condition does not present an immediate hazard, but if not corrected, may become hazardous. The operator may leave the gas on.

(b) Class C conditions include, but are not limited to:

(1) any gas pipe or appliance which was leaking and has been temporarily repaired;

(2) situations where the clearance between combustibles and appliances or ven
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/ny-nycrr-261-61.json
- **markdown:** https://regulus.evalyn.ai/document/ny-nycrr-261-61.md
- **app url:** https://regulus.evalyn.ai/document/ny-nycrr-261-61
- **source url:** https://govt.westlaw.com/nycrr/Document/I505e44c7cd1711dda432a117e6e0f345?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default)
**body:**

(a) A Class C condition does not present an immediate hazard, but if not corrected, may become hazardous. The operator may leave the gas on.

(b) Class C conditions include, but are not limited to:

(1) any gas pipe or appliance which was leaking and has been temporarily repaired;

(2) situations where the clearance between combustibles and appliances or vent connectors are less than required but no immediate fire hazard exists;

(3) any gas piping or appliance connection identified as improper or inappropriate;

(4) vent connectors that have a rusty condition, no draft diverter where required, reduced size or are incorrectly installed but drawing satisfactorily;

(5) improperly installed appliances such as those identified in the National Fuel Gas Code-NFPA 54 (as described in section 10.3 of this Title); and

(6) any properly vented appliance developing excessive carbon monoxide.

(c) For vented room heaters, excessive carbon monoxide shall be defined as 0.02 percent CO in an air-free sample of the flue gases when tested in an area having a normal oxygen supply.

(d) For all other vented appliances, excessive carbon monoxide shall be defined as 0.04 percent CO in an air-free sample of the flue gases when tested in an area having a normal oxygen supply.
- **truncated:** false
- **body characters:** 1274