Greenheck Waterwash (458292) - Manual (Page 23)

23 April 2005
®
B. Electrical Wiring:
All wiring must be done according to NEC (National Electrical Code NFPA #70) and local building codes. A
terminal block is provided in the electrical compartment of the waterwash control station for all wiring
connections. (See Figs. 21 & 22 on page 24. See also separate wiring diagram.)
Wiring to waterwash control station is 115 VAC, 20 AMP separately fused service.
Wiring from waterwash control station to fan control center is configured as a normally-open dry contact.
However, it can be configured by others to provide 115 VAC, 1 AMP (max) control power to the fan control
center. If the fans are controlled by a building management system, it may be necessary to reprogram the
control panels PLC to eliminate having to push the start fan & start wash buttons to initiate a wash cycle. A 24-
hour timer is then required to initiate the wash cycle.
Wire hood light switch to junction box on top of hood.
Wire waterwash control station terminals to fire suppression system microswitch in the Fire Suppression Control
Cabinet (a normally-closed dry contact switch). If this switch or jumper is not installed, the waterwash system
will operate in fire mode continuously. (This is not required but will provide added protection during a fire and
the control panel is shipped with a jumper between terminals 5 & 6 which must be removed when connecting to
the fire system micro-switch)
For optional sequence washing of multiple hoods, use one of the following:
A) Controls with vacuum breakers (See Fig. 2, 3 & 4, page 7)
B) Controls with backflow preventers with waterwash only (See Fig. 5, page 7)
C) Controls with optional continuous cold water mist and backflow preventer (See Fig. 6 & 7, page 7)
NOTE: The waterwash control station must be wired to the exhaust fan controls and optionally
to the hood's fire protection system.
Electrical