OP
LD1
Epic Contributor
Does your setup have an internal pump? Or an external one that you have to furnish (or the installer had to furnish)?
Geothermal Desuperheater for DWH plumbing
- Thread starter LD1
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Does your setup have an internal pump? Or an external one that you have to furnish (or the installer had to furnish)?
Dishpointer
Silver Member
I have a new 7 series water furnace HP and it has is own pump built in for my water heater. It's a small switch located by the pipe feeding my water heater.
OP
LD1
Epic Contributor
All the other brands I see seem to have an internal pump and temp control. Not the geocool.
buckeyefarmer
Epic Contributor
Mine has a circulator pump.
dodge man
Super Star Member
I assume it's an internal pump but I have no idea, we just wrote the check.
OP
LD1
Epic Contributor
Internal as well I assume
buckeyefarmer
Epic Contributor
Yes, came with the unit.
LAFarm
Bronze Member
- Joined
- Jun 14, 2012
- Messages
- 50
- Location
- Merryville, LA
- Tractor
- IHC Cub, Cub Cadet 7304 w/FEL, Cub Cadet 1415, Cub Cadet Tank M60, CAT D3C
Recently upgraded my older climate master unit to a newer model. Both have internal pumps for the ground loops and the hot water generator. Old unit was eer 15 and newer unit is eer 22.
OP
LD1
Epic Contributor
Got a reply about all this from the place I purchased. Which was Ingram's out of KY.
They suggest a grundfos up15-18 pump to circulate DHW through the DSH.
Said something to the effect that the head temp of the refrigerant will never exceed 130, so there is no risk of overheating.
I'm no HVAC expert so I don't know what the temps of R410a run. But assuming this is true, I can see how in loser demand conditions, like low stage with lower refrigerant temps, and a tank of water already at 125 degrees, that the DSH very well can have a reverse effect and actually cool the DHW.
Thus i like the idea of the temp controls and how the bard works to prevent this. And not waste energy running the DSH pump when no benefit or a negative benefit will result.
So, I ordered the bard.
They suggest a grundfos up15-18 pump to circulate DHW through the DSH.
Said something to the effect that the head temp of the refrigerant will never exceed 130, so there is no risk of overheating.
I'm no HVAC expert so I don't know what the temps of R410a run. But assuming this is true, I can see how in loser demand conditions, like low stage with lower refrigerant temps, and a tank of water already at 125 degrees, that the DSH very well can have a reverse effect and actually cool the DHW.
Thus i like the idea of the temp controls and how the bard works to prevent this. And not waste energy running the DSH pump when no benefit or a negative benefit will result.
So, I ordered the bard.
pat32rf
Veteran Member
When we ordered our GEO unit I was expecting a second circuit for domestic hot water which would be generated whenever the unit ran but I wound up with the desuperheater as well. I plumbed in the tanks like yours but found the unit seldom ran long and hard enough to generate much hot water. Then we cut back on the wood we were burning in the fireplace and started to heat 40 gallons each night. We are on time of use billing so I connected a time clock to the elements so they only run during cheap (.21/kwh) hydro hours.
If the cold water line feeding the geo unit gets above 120F the pump turns off on ours...
If the cold water line feeding the geo unit gets above 120F the pump turns off on ours...