Steam generator piping

sr1985

We’re about to do a job for one of our customers who wants us to hook up a steam generator for one of his dishwashers. He has an electric steam generator from the Electric Steam Generator Company. It runs on fresh treated water and has no condensate return.
One port on the dishwasher connects to a heating coil on top of the machine, with an automatic valve on the steam supply and a steam trap on the return. The other port provides direct steam injection to the bottom of the machine, also with an automatic valve on the supply. The steam distributors are in direct contact with the water that’s being heated.
There is no return line to the boiler—condensate from the steam trap goes to the drain.
Please see the picture below and let me know if my drawing is correct and whether I’m missing anything. I want to make sure this is the proper way to pipe a steam generator. There is no piping diagram provided by the boiler manufacturer, and no instructions from the dishwasher manufacturer, as all the equipment was custom-built to order

EBEBRATT-Ed

A lot of stuff.

Why can't the return from the coil go back to the boiler?

What does electro steam say about 100% feed water MU?

You need a steam trap at the bottom of the 1" pipe on the inlet side of the automatic valves.

Electro steam is probably designed for this but I am concerned with the 100% mu water

Intplm.

Curious. What do the directions say to do?

Mad Dog_2

Before you touch it, insist they give you a basic installation drawing. Someone engineered it! Get it on an email too! God Forbid you don't do it perfectly, you're going to eat it. Mad Dog

bburd

Is that 330 pounds of steam per hour? A 1 inch pipe seems small if this is low pressure.

Also, in many jurisdictions you are not allowed to discharge waste water over 140°F to the sanitary sewer. Tempering valves are available to add cold water to compensate.

EBEBRATT-Ed

@bburd it's 330lb steam. See the DWG

He is going to need a blowdown separator or something.

bburd

The drawing now says "45 psig". I don't know if the OP edited this or I just didn't notice. Question answered.