cCSAus Certified|cULus Listed

• Safe - maintains the boiler's draft to burn fuel more efficiently Easy installation - collar included to ensure a safe, snug fit Efficient - adjust air flow rate to produce a steady, safe and efficient flame without the risk of back drafting

A double-acting control for gas-fired furnaces and boilers is widely used for conversion burner installations, gas draft-induced appliance operation with mechanical draft inducers or sidewall power venters. It is also recommended for use on gas atmospheric appliances where a draft hood cannot be installed and can improve combustion stability and draft on many gas atmospheric installations with venting problems. The MG-1 provides precise, accurate control of drafts at levels higher than permitted by a standard draft diverter, which is a frequent requirement with gas. Because it is double-acting, it opens out to relieve positive vent system pressures as low as 0.01 in. Draft adjustments using weights are simple and accurate from 0.01 to 0.1 in.