mpo189Page 1 As an ENERGY STAR ® Partner, Burnham Hydronics has determined that the MPO84, MPO147, MPO189 and MPO231 meet the ® ENERGY STAR guides for Energy effi ciency established by the United StatesOn models MPO84 thru MPO189 these pockets should not be present. If insulation is damaged or not of proper type regarding pockets, it must be replaced. 4. Do not close and secure door at