– 8 –
FILTER SYSTEM
In addition to water conditioning for the control of solids, you must have a carbon block
fi
lter installed
and maintained. Carbon block
fi
lters remove the chlorine and chloramines disinfectants from the water.
Chlorine/chloramines will erode the oven cavity, rack guides, racks, and internal components, which is not
covered under warranty. Check with your local water treatment specialist for proper sizing and replacement
intervals for the carbon block cartridge.
Water feed lines to the oven must be
fl
ushed before
fi
nal connection. Particles in the water could clog
tubing and components that supply water for steam production and drain cooling. If the water supply is not
free of sediment or cloudy after several minutes of
fl
ushing, a sediment
fi
lter must be installed before use.
If you have purchased a water
fi
lter system from Vulcan-Hart, please follow the instructions provided with
the
fi
lter system. At the time of installation you must register your Combi Oven at
www.vulcanhart.com/
fi
lterreg
or use the reply card supplied with your unit. You will need to register your Combi Oven at each
fi
lter change to insure your standard and extended warranty is maintained.
Filter purchase invoices and maintenance records must be provided with warranty claims.
DRAIN CONNECTION
In order to avoid any back pressure in the oven, do not connect solidly to any drain.
The 1" NPT threaded
fi
tting at the rear of the combi must be extended a minimum of 12" (305 mm) -
maximum of 72" (1829 mm) away from combi base, to an open air gap type drain. Do not reduce the
drain piping throughout its length. Provide a suitable
fl
oor sink with a minimum depth of 12" (305 mm).
The
fl
oor sink is NOT to be directly under the combi. The drain should slope down away from the combi
¼" for every foot of drain pipe length. The drain pipe should be either iron or copper. DO NOT use PVC
pipe; PVC pipe may lose its rigidity or glue may fail.
In order to avoid any back pressure in the oven, do not connect solidly to any drain connection.
GAS SUPPLY CONNECTIONS
Gas supply connections and any pipe joint compound must be resistant to the
action of propane gases.
A ¾" NPT minimum inside diameter gas supply line is required.
If quick disconnect devices are used, make sure it is sized
properly for data plate BTU/hr. rating.
Codes require that a manual gas shutoff valve be installed in
the gas line ahead of the combi oven. The gas line must be capable of delivering gas to the combi oven
without excessive pressure drop at the minimum rate speci
fi
ed on the rating plate.
Inadequate gas supply could result in burner noise and poor burner performance.
The proper sizing and installation of the gas connection is important for the machine to operate within
its design speci
fi
cations. In some installations, the gas supply may not be suf
fi
cient enough to allow all
the gas equipment to operate properly at peak loads; or when other equipment with a high BTU/hr. input
requirement is operating. The connection to the machine becomes even more important in this type of
location. Flexible gas connectors with quick disconnect or swivel
fi
ttings (when used) and gas connectors
beyond the length necessary will reduce the BTU/hr.
fl
ow capacity to the machine.
NOTE:
Do not use corrugated stainless steel tubing for commercial gas equipment supply connections.
MINIMUM RATE
Gas Input
3/4" NPT
Natural
5" - 14" W.C.
Propane
11" - 14" W.C.
