Mc and Miller Question

will smith_4

Hi folks-been away from The Wall for a while, so what I'm about to ask might be a dusty point. Has anybody run across Mc and Miller 150 low water cut-offs with pump control circuits that don't have the correct contacts for the pump circuit? As long as I have been in the field (1991), contacts 1 and 2 have been designated for the feed pump, 5 has been common, 4 and 5 have been the alarm circuit, and 5 and 6 have been the burner circuit. Troubleshot two boilers this week with two new 150's that had mechanical switches (not mercury), both were normally closed contacts for 1 and 2. The only time the pump could feed was if the boiler was flooded, and the burners could stay on even if the boiler was dry. Anybody else see this yet? My suppliers say I'm the first to field this complaint-tell me I'm not crazy-