[adnadeau]

I have a Monitor 441 on the 1st floor and a Toyotomi K-1 water heater in the cellar, both running off a lifter pump on the second floor. Any time the lifter pump is one or more floors above the appliance, you must put an in-line pressure reducer at the K-1 input to the appliance. The fuel inlet pressure must not be greater than 2.5 psi, which is the head pressure for about 7 ft of kerosene.