PlumbingCodeinCommercialKitchens 5.9.12

Plumbing Code in

Commercial Kitchens

NH BOA

May 9, 2012

Main Topics

Grease Interceptors

Indirect Waste Receptors

Cleaning Chemical Dispensers

Thermal Expansion

IPC - Chapter 10

Traps

Interceptors

Separators

Section 1002 Trap Requirements

1002.1 Fixture Traps. Each fixture shall be

separately trapped by a liquid-seal trap , except as

otherwise permitted by this code. The vertical

distance from the fixture outlet to the trap weir shall

not exceed 24 inches, and the horizontal distance

shall not exceed 30 inches measured from the

centerline of the fixture outlet to the centerline of

the inlet of the trap. The height of a clothes washer

standpipe above trap shall conform to Section 802.4.

A fixture shall not be double trapped.

Section 1002.1

Exception #3 A grease interceptor intended to serve as a fixture

trap in accordance with the manufacturers installation

instructions shall be permitted to serve as the trap for a single

fixture or a combination sink of not more than three

compartments where the vertical distance from the fixture outlet

to the inlet of the interceptor does not exceed 30 inches and the

developed length of the waste pipe from the most upstream

fixture outlet to the inlet of the interceptor does not exceed 60

inches.

ZURN LIGHT COMMERCIAL PLUMBING PRODUCTS 2640 South Work Street Falconer, NY 14733

Phone: 1-800/906-5060 Fax: 716/665-3126 World Wide Web: www.zurn.com

Form # JS2 Date: 3/13/09 C.N. No. 99791 Rev. F Page 1 of 2

GT2700Grease Interceptor Installation & Cleaning Instructions

INSTALLATION

1. Zurn Light Commercial Grease Interceptors

should be installed as close as possible to the

fixture being served. Always install where there

is easy access for cover removal and cleaning.

2. A flow control must be installed as close as

possible to the underside of the fixture. The

flow control must be installed with the vent or

(air intake) on the downstream side of the orifice

plate. The vent connection is positioned to the

top of the flow control fitting and piped upward

higher than source of water, or to building vent

system

3. It is recommended that a cleanout tee be

installed before the flow control to access the

flow control orifice and clear debris.

4. The cleanout plug should be installed over the

outlet of the interceptor.

5. The interceptor is to be installed using no-hub

couplings.

6. Outlet piping should be connected to the

sanitary drain, and pipe size should be equal

to or larger than the inlet piping. Outlet pipe

should also be vented so the interceptor is not

siphoned.

7. Solid waste should not go into an interceptor.

Food grinder waste and other solids should

be captured in the sink or by a solids interceptor

before reaching the grease interceptor.

Zurn Light Commercial Series Grease Interceptors #2700 consist of a interceptor rated at

( ) gpm and a properly sized flow control fitting.

1002.2 Design of traps. Fixture traps shall be self-scouring. Fixture traps

shall not have interior partitions, except where such traps are integral wih

the fixture or where such traps are constructed of an approved material that

is resistant to corrosion and degradation.

1002.3 Prohibited Traps

6. Drum traps

Exception: Drum traps used as solids interceptors and drum traps

serving chemical waste systems shall not be prohibited.

1002.4 Trap seals. Each fixture trap shall have a liquid seal of not less than

2 inches and not more than 4 inches or deeper for for special designs relating

to accessible fixtures.

1003.1 Where required.

Interceptors and separators shall be provided to

prevent the discharge of oil, grease, sand and

other substances harmful or hazardous to the

building drainage system, the public sewer, the

private sewage disposal system or the sewage

treatment plant or processes.

1003.2 Approval.

The size, type and location of each interceptor

and of each separator shall be designed and

installed in accordance with the manufacturers instructions and the requirements of this section

based on the anticipated conditions of use.

Wastes that do not require treatment or separation

shall not be discharged into any interceptor or

separator.

1003.3.1 Grease Interceptors and Automatic

Grease Removal Device required. (cont.)

Fixtures and equipment shall include:

pot sinks

pre-rinse sinks

soup kettles or similar devices

wok stations

floor drains or sinks into which kettles are drained

automatic hood wash units

dishwashers without pre-rinse sinks.

1003.3.2 Food Waste Grinders

Where food waste grinders connect to grease interceptors, a solids interceptor shall separate the

discharge before connecting to the grease

interceptor. Solids interceptors and grease

interceptors shall be sized and rated for the

discharge of the food waste grinder. Emulsifiers,

chemicals, enzymes and bacteria shall not

discharge into the food waste grinder.





INSTALLATION












system







couplings.





siphoned.







In compliance?

1003.3.4.2 Rate of flow controls

Grease interceptors shall be equipped with

devices to control the rate of water flow so that the

water flow does not exceed the rated flow. The

flow- control device shall be vented and terminate

not less than 6 inches (152 mm) above the flood

rim level or be installed in accordance with the

manufactures instructions.





INSTALLATION












system







couplings.





siphoned.







1003.3.3 Grease interceptors and automatic

grease removal devices not required.

A Grease interceptor or an automatic grease

removal device shall not be required for individual

dwelling units or any private living quarters.

Chapter 8

Indirect/Special Waste

802.1 Where Required.

Food-handling equipment and clear-water waste

shall discharge through an indirect waste pipe as

specified in Sections 802.1.1 through 802.1.8.

Section 802.1.1 Food Handling.

Equipment and fixtures utilized for the storage,

preparation and handling of food shall discharge

through an indirect waste pipe by means of an air

gap.

802.2.1 Air gap.

The air gap between the indirect waste pipe and the

flood level rim of the waste receptor shall be a

minimum of twice the effective opening of the indirect

waste pipe.

Chapter 2 Definitions:

Air Gap (Drainage System): The unobstructed vertical

distance through the free atmosphere between the outlet

of the waster pipe and the flood level rim of the receptacle

into which the waste pipe is discharging.

Floor Level Rim: The edge of the receptacle from which

water overflows.

2 x D

Waste

Receptor

802.3 Waste Receptors.

Every waste receptor shall be of an approved

type. A removable strainer or basket shall cover

the waste outlet of waste receptors. Waste

receptors shall be installed in ventilated spaces.

Waste receptors shall not be installed in

bathrooms or toilet rooms or in any inaccessible or

unventilated space such as a closet or storeroom.

Ready access shall be provided to waste

receptors.

802.3.1 Size of Receptors.

A waste receptor shall be sized for the maximum

discharge of all indirect waste pipes served by the

receptor. Receptors shall be installed to prevent

splashing or flooding.

802.3.2 Open hub waste receptors.

Waste receptors shall be permitted in the form of a

hub or pipe extending not less than 1 inch (25.4

mm) above a water-impervious floor and are not

required to have a strainer.

The 3 Bay Sink

802.1.8 Food Utensils, Dishes, Pots and

Pan Sinks

Sinks used for the washing, rinsing or sanitizing of

utensils, dishes, pots, pans, or service ware used in

the preparation, servicing or eating of food shall

discharge indirectly through an air gap or an air break

or directly connect to the drainage system.

WASH RINSE SANITIZE WITH GREASE

INTERCEPTION, DIRECTLY

CONNECTED

Wash, rinse and sanitize with grease interception,

indirectly connected using an approved waste receptor

CHEMICAL DISPENSERS

AT THE MOP SINK

Expansion Tanks Required?

Section 607 Hot Water Supply System

607.3 Thermal expansion control. A means of controlling increased pressure

caused by thermal expansion shall be provided where required in accordance with

Sections 607.3.1 and 607.3.2.

607.3.1 Pressure-reducing valve. For water service system sizes up to and

including 2 inches, a device for controlling pressure shall be installed where,

because of thermal expansion, the pressure on the downstream side of a

pressure-reducing valve exceeds the pressurereducing valve setting.

607.3.1. Backflow prevention device or check valve. Where a backflow

prevention device, check valve or other device is installed on a water supply

system utilizing storage water heating equipment such that thermal expansion

causes an increase in pressure, a device for controlling pressure shall be

installed.

IRC P2903.4

Plumbing Safety & Licensing

Inspectors

Ron Lemere 603-223-4289 Ext. 25269

[email protected];

Sam Zannini Jr. 603 223-4289 Ext. 25271

[email protected];

Earl Middlemiss 603-223-4289 Ext. 25270

[email protected]

Contact Jeff Cyr 603-223-4289 Ext. 25241

[email protected];

mailto:[email protected]

PlumbingCodeinCommercialKitchens 5.9.12

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