Expansion tanks located on the load side of a geothermal water-to-water heat pump, air-to-water heat pump, or on a boiler system, are intended to prevent over pressurization of the system as the water temperature rises. These expansion tanks have the opposite purpose of a geothermal expansion tank on the source side (ground loop side) of a geothermal system.
The following table shows the standard sizes we offer.
Expansion Tanks
| PN | Description | Capacity (GAL) | Connect. Size | Photo |
|---|---|---|---|---|
| ETN-FX-HTX15 (Submittal) | Expansion Tank, NON-ASME, 2.1 GAL | 2.1 | 1/2" |  |
| ETN-FX-HTX30 (Submittal) | Expansion Tank, NON-ASME, 4.8 GAL | 4.8 | 1/2" |  |
| ETN-FX-HTX60 (Submittal) | Expansion Tank, NON-ASME, 6 GAL | 6 | 1/2" |  |
| ETN-FX-HTX90 (Submittal) | Expansion Tank, NON-ASME, 15 GAL | 15 | 3/4" |  |
Mounting Kit and Hose Table
| PN | Description | Compatiable Expansion Tank | Photo |
|---|---|---|---|
| 4579 | Expansion Tank Mounting Kit | ETN-FX-HTX15 |  |
| 4680 | Expansion Tank Mounting Kit. 4.4-7.6G | ETN-FX-HTX30 |  |
| ETN-FX-HTX60 | |||
| Connection Hose for Expansion Tanks | |||
| 4645 | Hose, 1/2" FIP X 1/2" FIP, 30" long, PVC core, Stainless Steel braid | ETN-FX-HTX15 |  |
| ETN-FX-HTX30 | |||
| ETN-FX-HTX60 |