Guide

7
Figure 3
Robertshaw Grayson TS11J Safety Valve
PILOT ADJUSTMENT:
SAFETY PILOT ADJUSTMENT PROCEDURE: (Fig. 4)
NOTE: All Comstock-Castle appliances that are designed with
safety valves, are equipped with a pilot adjustment key.
For use with ovens and thermostatically controlled griddles:
1.
Remove knobs, control panel, oven rack(s), and the oven
bottom.
2. Locate the pilot adjustment screw cap on the safety valve and
remove the cap.
3. Turn the slotted pilot key to provide the proper size pilot. (See
Fig. 3, TS11J Safety Valve or BASO H43A).
4. Replace the pilot adjustment cap.
5. If equipped with BASO H15HR-2 the pilot adjustment is made
with a fitting in the Back-out Pipe.
APPLICATION
The H43 valve is designed to provide safe lighting and complete
shutoff of pilot and main burner gas. An interlock between the
manual valve handle and the reset button allows gas flow only
to the pilot during pilot lighting. The control shuts off both main
and pilot gas if the pilot flame is extinguished. The manual valve
controls both main and pilot gas.
H43 valves are suitable for use with natural gas, Liquefied
Petroleum (LP) gas, and LP gas-air mixtures at pressures up to
35 mbar (0.5 psi). Models H43_A with a standard power unit are
suitable for operation over a temperature range of 0 to 80°C (32
to 175°F). Models H43_B with a high temperature power unit are
suitable for operation over a temperature range of 0 to 120°C (32
to 250°F).
DESCRIPTION
The H43 valve contains a plug valve with multiple drillings, which
allows it to serve as both the main burner valve and pilot valve.
The valve handle indicates the operating position. Safe lighting is
accomplished by a positive interlock between the valve handle
and reset button, which allows for resetting the valve to the pilot
position only. The handle incorporates a lock button to prevent
accidentally turning off the valve. The lock button must be lifted to
permit turning the plug valve to the Off position. The main burner
may be throttled between the On and Pilot position through the
use of the handle.
In the event of pilot flame outage, gas is shut off both to the
main burner and pilot burner. The handle must be turned to the
Pilot position to reset the valve and light the pilot burner. The
pilot outlet is located on the right-hand side of the valve casting,
when looking into the inlet of the control with the reset button
up. The pilot connection is 1/4 cc. It flows toward the inlet of the
control and is regulated with a pilot adjustment screw. The pilot
connection is also available with the flow toward the outlet of the
control. (Contact BASO Gas Products.)
MOUNTING
H43 valves may be mounted in any convenient position with the
reset button and manual valve handle accessible.
Dimensions, mm (in.)
DIMENSIONS6. AL
WAYS ensure the cap is replaced on the regulator.
7. Turn the gas and the unit “OFF” and reinstall the pressure tap
test plug.
8. Ensure the top of the regulator is kept clear of dust and fluids
as these will clog the regulator vent port.