15
GAS CONNECTION
The gas supply (service) line must be the same size or greater than the inlet line of the appliance. All cooktops use a
1/2” (1.3 cm) I.D. NPT (Sch40) inlet. Sealant on all pipe joints must be resistive to LP/Propane gas.
1. Manual shut-off valve:
The installer-supplied valve must be installed in the gas service line ahead of the appliance and regulator in the
gas stream and in a position where it can be reached quickly in the event of an emergency.
In Massachusetts:
A “T” handle type manual gas valve must be installed in the gas supply line to the appliance.
2. Pressure regulator:
a) All heavy-duty, commercial-type cooking equipment must have a pressure regulator on the incoming service
line for safe and efficient operation, since service pressure may fluctuate with local demand. The regulator
supplied with the VGSU and DGSU cooktop must be installed before any gas connections are made.
NOTE: The regulator for the DGCU is already installed in the unit.
b) Manifold pressure should be checked with a manometer; natural gas requires 5.0” WCP and LP/Propane
requires 10.0” WCP. Incoming line pressure upstream for the regulator must be 1” WCP higher than the
manifold pressure in order to check the regulator. The regulator used on this cooktop can withstand a
maximum input pressure of 1/2 PSI (14.0” WCP). If the line pressure is in excess of that amount, a step-
down regulator will be required.
c) The appliance, its individual shut-off valve, and pressure regulator must be disconnected from the gas
supply piping system during any pressure testing of that system at pressures in excess of 1/2 PSI (3.45kPa).
d) The appliance must be isolated from the gas supply piping system by closing its individual manual shut-off
valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2
PSI (3.45kPa).
3. Rigid Connections:
a) Incoming gas is brought from an intake pipe (not supplied) at the rear of the unit to the pressure regulator;
then to the manifold pipe for distribution. The only connection necessary is from the service supply, through
the shut-off valve (not supplied), to this intake pipe (not supplied) to the regulator supplied, but not
connected through the cooktop.
In Massachusetts:
This appliance must be installed with a 36” (3-foot) long
flexible gas connector.
b) Double-check any installer-supplied intake pipes visually and/or blow them out with compressed air to clear
any dirt particles, threading chips, or other foreign matter before installing in a service line. Those particles
will clog orifices when gas pressure is applied.
c) Check the gas supply and the regulator for the proper supply of gas. A properly adjusted burner should be
stable and quiet. The flame should have a sharp, well defined blue inner cone with no yellow tipping. The
flame should also be stable and uniform with no flames lifting off the burner ports.
CAUTION:
Before placing the cooktop into operation, always check for gas leaks with a soapy water solution or other
acceptable method.
DO NOT USE AN OPEN FLAME TO CHECK FOR LEAKS!
LP/Propane Conversion
The VGSU and DGSU models are field convertible to LP/Propane gas or natural gas.
The orifice spuds and regulator
must be physically changed. For the VGSU models, order conversion kit NK2VGSU to convert to natural and LPK3VGSU
to convert to LP/Propane. For the DGSU models, order conversion kit DLPK to convert to LP/Propane. Gas conversions
should be completed by a qualified technician. Refer to instructions in conversion kit for gas conversions.
The DGCU models are not field convertible. The unit must be ordered from the factory either natural or
LP/Propane.
14
Two (2) hold brackets will be provided with the DGSU models
and (4) hold brackets will be provided with the DGCU models.
After cooktop has been installed into the countertop, locate
the brackets in the slots as needed (Figure 1). Place a bracket
in the slots and lower until the bracket catches. (Figure 2). Use
the bolt to tighten the cooktop to the countertop. (Figure 3)
Slots
Mounting
bracket
Push into slots
and down
Figure 1
Figure 2
Figure 3
bolt
Cooktop
Countertop
Top of cooktop
1-1/2” (3.8 cm)
Max. thickness
NOTE:
If countertop is less than 1-1/2” (3.8 cm)
thick, a filler block will have to be used for bolt to
push against. (See figure 4)
Filler block
*There must be a 1” (2.5 cm) clearance under counter on all (4) sides of the cooktop.
1” (2.5 cm)
Min. *
INSTALLATION OF HOLD DOWN BRACKET
FOR DGCU AND DGSU MODELS
Содержание DGCU105
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