The Ontario Building Code | Plumbing Fixtures

7.6.4.2. Plumbing Fixtures

(1) water closets and urinals shall be certified to CAN/CSA-B45.0, "General Requirements for Plumbing Fixtures".

(2) Except as provided in Sentence (3), the flush cycle for each fixturethat is a water closet or urinal shall not exceed the maximum water consumption per flush cycle listed for that fixture in Table 7.6.4.2.A.

Table 7.6.4.2.A.
Maximum water Consumption per flush Cycle for sanitary Fixtures

Forming Part of Sentence 7.6.4.2.(2)

Item	Column 1 Fixture	Column 2 Maximum water Consumption per flush Cycle, LPF
1.	water Closet (Tank Type)	6.0
2.	water Closet (Direct flush)	6.0
3.	urinal (Tank Type)	1.9(1)
4.	urinal (Direct flush)	1.9(1)

Notes to Table 7.6.4.2.A.:

⁽¹⁾ urinals equipped with automatic flushing devices shall be controlled to prevent unnecessary flush cycles during buildingdown time.

(3) In buildings classified as Group C occupancy, the flush cycle for each fixturethat is a water closet or urinal shall not exceed the maximum water consumption per flush cycle listed for that fixture in Table 7.6.4.2.B.

Table 7.6.4.2.B.
Maximum Water Consumption per Flush Cycle for Sanitary Fixtures in a Group C Occupancy

Forming Part of Sentence 7.6.4.2.(3)

Item	Column 1 Fixture	Column 2 Maximum Water Consumption per Flush Cycle, LPF
1.	Water Closet (Tank Type)	4.8(1)
2.	Water Closet (Direct Flush)	4.8
3.	Urinal (Tank Type)	1.9(2)
4.	Urinal (Direct Flush)	1.9(2)

Notes to Table 7.6.4.2.B.:

⁽¹⁾ Water closets which provide a dual flush cycle option of both 4.1 LPF or less and 6.0 LPF are deemed to comply.

⁽²⁾ Urinals equipped with automatic flushing devices shall be controlled to prevent unnecessary flush cycles during building down time.

(4) Sentences (2) and (3) do not apply to a fixturelocated in an existing building where the chief building official is satisfied that compliance with the requirement is impracticable because of maintenance or operational difficulties.

7.6.5. Water Temperature Control