kickspace heaters

Bob Cat

I was wondering if anyone else has ever experinced a short cycling of the beacon/morris k-series heaters. I installed one two months ago and it would would run fine on low but when I put it on high it would short cycle. I just installed another one and I am having the problem. I know that they run off an aquastat and I made sure it was on the endtube closest to the supply. It seems as though the unit is moving too much air across the coil and removing the heat too fast. At first I thought this was logical because the return air was 30 degrees, and I sure its not designed for that. When the room heated up it ran a bit longer but still cycles(enen though the t-stat is still calling). I have this one on a seperate 3/4 loop and I used a monoflow tee to feed unit. I piped it like this because I was worried about noise. I also put a ball valve between the monoflow tee and the normal tee so I could add additional flow if I needed it. It still cycles if I throttle the ballvalve.If anyone has an opinion on whats up I'd like to hear it.

Bob Cat

kickspace heaters

I was wondering if anyone else has ever experinced a short cycling of the beacon/morris k-series heaters. I installed one two months ago and it would would run fine on low but when I put it on high it would short cycle. I just installed another one and I am having the problem. I know that they run off an aquastat and I made sure it was on the endtube closest to the supply. It seems as though the unit is moving too much air across the coil and removing the heat too fast. At first I thought this was logical because the return air was 30 degrees, and I sure its not designed for that. When the room heated up it ran a bit longer but still cycles(enen though the t-stat is still calling). I have this one on a seperate 3/4 loop and I used a monoflow tee to feed unit. I piped it like this because I was worried about noise. I also put a ball valve between the monoflow tee and the normal tee so I could add additional flow if I needed it. It still cycles if I throttle the ballvalve.If anyone has an opinion on whats up I'd like to hear it.

ScottMP

Sounds

Like you might have to low a gpm. Your cooling off the coil so quick it can't keep up. Allthough 30 degrees is a big delta T.

What pump are you using ?

By the way, is this at the end of the loop ? What is the supply temp ?

Scott

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Frank_17

supply temp?

try turning the boiler temp up to 200

Mike T., Swampeast MO

Have you

checked the delta t and supply temperature with the specs of the unit? A higher than expected delta t will point to inadequate flow.

If the unit is heating the space adequately can you use a staged t-stat to keep it running on "low" most of the time, only kicking to high during peak demand?