240 heater

[Ramper]

I just picked up a 5000 watts Hotzone radiant heater. The attached is the 240 hook-up (rated at 240/480). The installation manual suggests that this unit can be hooked up in "stages" or to a dimmer to control the output. How would I do that?

 

[mm08822]

Without seeing a full schematic of the unit, it appears that there are 2 heating elements in parallel at the lower 240V configuration based upon the 1 pager supplied.

Easiest way to hook this unit up is to run both elements at once ( as per your pic) unless the unit is grossly over-sized.

Does this unit have an integral t-stat or require an external line-voltage or low-voltage t-stat?

 

[ForceFed70]

That heater appears to have 2x 120V 2500W heating elements, with each element intended to use a different leg. Most 240V heaters don't use a neutral conductor.

I doubt the dimming or phasing is intended to be done internally.

You could use 2x 25A line level thermostats, 1 for each leg. Set 1 for 65* set the other for 60*. When temp drops below 65* the the heater puts out 2500W worth of heat energy, when the temp drops below 60* the other element comes on and the heater puts out the full 5000W.

If this is going into some sort of garage/workshop - I wouldn't bother with anything fancy.

 

[Ramper]

It is going in a shop. Not sure how yet, but in a shop. If I use just one thermostat should it be a double pole?

 

[ForceFed70]

It is going in a shop. Not sure how yet, but in a shop. If I use just one thermostat should it be a double pole?

You could get away with a single pole if the heater allows the elements to be run in series. If they must be parallel you'll need the double pole.