Greenheck Fan 474753 Operation, Fire System, Filter Stage, Dimensions inches, Description

Fire System

This equipment is furnished with factory pre-piped fire suppression nozzles and fusible link detector brackets. The brand of the system was specified at time of order (Amerex or Ansul). Factory installation is according to the Fire System manufacturers recommendations. Field connection, tanks, controls, fusible link detectors, and commissioning is provided and installed, on site, by others. The AHJ may require additional protection.

Filter Installation (See Figure #2 on page 7)

All 4 stages of filters are shipped on a separate skid in the original factory packaging. Do not remove packaging or install filters until just prior to commissioning the unit.

Care must be taken to ensure filters are installed in the proper sequence and proper direction of airflow for filter stages 1, 2 & 3 (stage 4 carbon panels are not subject to airflow direction).

Open the access doors. Remove the filter compression plates at stages 1, 2, 3 & 4. Install filters and replace all 4 filter compression plates. Compression plates must be in place to ensure proper filter sealing integrity. Close and latch access doors.

NOTE

Access doors are on lift off hinges and can be easily removed for more convenient filter servicing.

Filter Stage	Dimensions (inches)
	Description
Pre-Filter	24 x 24 x 4 thick
	MERV 8
(Stage 1)
	Pleated metal frame filter
Bag Filter	24 x 24 x 22 deep
	MERV 14
(Stage 2)
	Bag filter
Rigid Filter	24 x 24 x 12 thick
	MERV 16
(Stage 3)
	95% DOP HEPA-type filter
Carbon Panel	24 x 24 x 1 thick
(Stage 4)	Bonded carbon panel

NOTE

Only UL 900, Class 1 filters are approved for use in this equipment. Substitutions will void the manufacturer’s warranty and the listing to UL

710.Please refer to the Maintenance section for information on ordering replacement filters.

Operation

NOTE

Prior to starting the fan, remove fan tie down straps. These are used only to prevent shipping damage. After removing the tie down straps, the fan should float freely on the spring isolators. Confirm that the installation is completed as shown in the Installation section.

Start-Up

Turn the unit on momentarily and then turn off. Remove fan drive access cover and verify proper fan wheel rotation. If rotation is backwards, reverse the fan motor electrical input leads. After verifying proper fan wheel rotation, the unit is ready for operation.

Filter Status Indicator

As filter stages 1, 2 and 3 load with smoke and grease particles, resistance to airflow increases and the exhaust air volume decreases. Pressure switches continuously read the resistance across each filter stage. Each pressure switch is factory preset to transmit an alarm signal when that stage of filter has reached its terminal resistance and needs replacing with new filters. This terminal resistance setting is based on the filter manufacturers rating. The alarm signal lights an LED located on the face panel of the remote Filter Status Indicator Enclosure.

IMPORTANT

Replace filters immediately after the Filter Status Indicator light comes on. Failure to do so may cause a reduced exhaust air volume allowing smoke to escape into the kitchen, or may cause filters to rupture, or both. The terminal resistance for each stage of filters is factory set at the values shown below. Altering these settings without first contacting Greenheck Fan Corp. will void the manufacturers warranty and void the UL 710 listing.

Filter Stage	Resistance Setting
1	1.2 in. wg.
2	1.0 in. wg.
3	1.7 in. wg.

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