MODULATING SYSTEMS The GV30 Series Main Gas Combination Control incorporates full ... fully automatic or manual temperature control of gas logs, space heaters, and other ... Series is a non-electric combination control which performs all the functions ... required to regulate and control gas flow to an appliances main burner. It ... is suitable for use with all fuel gases and is capable of a control range of ... for full modulation with temperature controlled main burner shutoff, GV31 on-off ... temperature controlled main burner, GV32 manually controlled ... full modulation without temperature controlled main burner shutoff, GV36 manually ... controlled main burner on-off low to high ... adjustment, and GV37 manually controlled main burner with snap action on-off. ...
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