Greenheck Fan 474754 Plumbing, Duct Connections, Materials, Detergent Dispenser

9.The remote mounted detergent dispenser frame mounts to a foundation using the four mounting holes located at the base of the unit. For details on wiring this item, refer to the ELECTRICAL section. For details on plumbing connections, refer to the PLUMBING section.

Duct Connections

Ductwork must conform to the IMC and SMACNA guidelines.

As specified in NFPA 96, Ch. 7.5 (latest edition), exhaust duct systems must be constructed in the following manner; unless otherwise specified by the local authority having jurisdiction (AHJ).

Materials

Ducts shall be constructed of and supported by carbon steel not less than 1.37 mm (0.054 in.) (No. 16 MSG) in thickness or stainless steel not less than 1.09 mm (0.043 in.) (No. 18 MSG) in thickness.

Installation

All seams, joints, penetrations, and duct to hood collar connections shall have a liquid‑tight external weld.

An inlet transition is furnished to match the inlet duct size. The inlet transition is furnished with a listed duct access door for inspection and cleaning.

Units intended for indoor mounting are provided with an outlet mounting flange, either at the unit discharge or as part of a factory supplied UL 762 listed exhaust fan. Outlet ductwork from the exhaust fan is required to be per the above mentioned methods unless otherwise specified by the local authority having jurisdiction (AHJ).

NOTE

All water piping exposed to freezing temperatures must to be trace heated and insulated to prevent damage to the unit.

Plumbing

Once all system components are installed, plumbing connections for the system can be made. It is recommended that plumbing connections be done prior to making electrical connections.

From the building, a 1½- or 2-inch (refer to drawings) hot water line is required for connecting the wash system. Recommended water temperature is 140˚F at 45 psi pressure. Refer to the chart on this page for information on water and detergent quantity requirements. Install the quarter turn ball valve (provided) at the incoming water source to allow the water to be turned off for servicing. Next, install the strainer (provided), backflow preventer (provided), pressure gauge (provided), and solenoid valve (provided) respectively. Locate these items along the incoming water line in a location convenient for inspection/servicing.

NOTE

For unit sizes 06-08 and 06-09, a minimum 2 inch incoming water service is required.

	Wash Cycle	Wash Cycle
Unit Size	Water Flow	Detergent Flow
	Rate (gpm)	Rate (gpm)
02-03	7.2	.36
02-04	9.6	.48
02-05	12.0	.60
02-06	14.4	.72
04-03	14.4	.72
04-04	19.2	.96
04-05	24.0	1.20
04-06	28.8	1.44
04-07	33.6	1.68
04-08	38.4	1.92
04-09	43.2	2.16
06-03	21.6	1.08
06-04	28.8	1.44
06-05	36.0	1.80
06-06	43.2	2.16
06-07	50.4	2.52
06-08	57.6	2.88
06-09	64.8	3.24

Detergent Dispenser

From the pump located on the base of the detergent dispenser, connect a ½-inch piping connection for the detergent supply to the 1½-inch water supply line. A quarter turn ball valve (by others) can be installed on this line if necessary for servicing. The connection of the ½-inch detergent supply line to the 1½-inch water supply line should be made within 5 feet of the cabinet assembly.

Cabinet Assembly

The unit is supplied with two (2) 1¼- or (2) 11-inch wash headers located at the top of the cabinet assembly. Connect the water supply line to both of the wash headers at the top of the cabinet. Bring a 3-inch waste water drain piping connection with P trap to the drain pipe on the side of the cabinet assembly. The trap drain line water column for the drain should be sized for the total system resistance plus 1 in. wg.

Grease Grabber™ Power Play Kitchen Exhaust Pollution Control System 5