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intertherm gas valve

Posted: Tue Dec 13, 2011 7:09 pm
by fsask
would anyone have a schematic of an intertherm mac1175 gas valve furnace on natural gas. it is a unitrol robert shaw the furnace guy I had in thinks either a spring or washer is missing behind the adjuster screw. was there a spring and screw to convert it to ng behind the grey plastic cover possible original valve model number as i can't read mine

thanks
Frank