Dorchester DR-TC solar water heater
Hybrid solar hot water heater with integrated direct fired condensing gas burner for domestic hot water.
2 models available with continuous outputs (@44°C ∆T) of 820 & 1200 l/h.
Product information
- Power outputs 41-59kW and storage capacity of 388 litres.
- Saves energy and reduces gas bills by using free solar energy when available.
- Fits in existing plant room with no back up heat source needed.
- Safe and efficient domestic hot water generation.
- Combats climate change with low carbon emissions.
- Flexible temperature controls to help prioritise solar energy usage.
- Compatible with Hamworthy Trigon solar thermal panels to ease project co-ordination.
- Direct fired water heater can be operated independently from solar hot water system to allow a phased installation to spread the cost.
- Down firing pre-mix modulating burner reduces the risk of scale build up impacting on the heat transfer.
- Natural gas and lpg water heater options.
- Electronic anode fitted as standard.
- Easy access for service and maintenance.
- Full solar project assistance with hot water sizing (using T’Sol software) and a dedicated hot water expert to guide you through product selection.
- Extensive back up and support from our team of experienced engineers across the UK.
- Long term commitment to spare parts.
Technical data
| Units | DR-TC 40 | |
|---|---|---|
| Water | ||
| Continuous output with 44°C ΔT | l/h | 820 |
| Continuous output with 50°C ΔT | l/h | 730 |
| Continuous output with 55°C ΔT | l/h | 660 |
| Storage capacity | litres | 388 |
| Maximum operating water pressure (open vented) | bar | 8 |
| Maximum operating water pressure (unvented) | bar | 5.5 |
| T&P valve maximum temperature (unvented systems) | °C | 97 |
| T&P valve maximum pressure (unvented systems) | bar | 7 |
| Energy | ||
| Gross efficiency | % | 96 |
| Heating-up time, ΔT = 44°C | min. | 16 |
| Heating-up time, ΔT = 50°C | min. | 18 |
| Heating-up time, ΔT = 55°C | min. | 20 |
| Nat Gas | ||
| Input, gross – maximum | kW | 43.5 |
| Input, net - maximum | kW | 39.2 |
| Output – maximum | kW | 41.9 |
| Gas inlet pressure – nominal | mbar | 20 |
| Gas flow rate – maximum @1013.25 mbar and 15°C | m3/h | 4.2 |
| LPG | ||
| Input, gross – maximum | kW | 42.6 |
| Input, net - maximum | kW | 39.2 |
| Output – maximum | kW | 41.9 |
| Gas inlet pressure – nominal | mbar | 37 |
| Gas flow rate – maximum@1013.25 mbar and 15°C | kg/h | 3.1 |
| Flue | ||
| Approx flue gas vol * | kg/h | 57.7 |
| Flue gas temperature – maximum | °C | 50 |
| NOx emission* | mg/kWh | 51 |
| Minimum pressure at flue outlet | Pa | 94 |
| Electrics | ||
| Water heater only,start current-max. (max. power) | A (W) | 0.6 (135) |
| Water heater only,run current-max. (max. power) | A (W) | 0.52 (120) |
| Electrical power rating of the solar pump-maximum | W | 165 |
| Nominal supply voltage | volts | 230V 1PH 50Hz |
| Solar | ||
| Recommended solar fluid | Propylene glycol e.g. Tyfocor L | |
| Recommended solar fluid dilution | (diluted 40% Tyfocor /60% water) | |
| Maximum pressure of solar fluid circuit | bar | 6 |
| Noise level @ 2m distance from roof duct | dB(A) | <45 |
| Number of (power) anodes | - | 2 |
| Approximate shipping weight | kg | 245 |
| Maximum floor load/ weight filled with water | kg | 633 |
| *dry air free,European Class 5. Max | ||
| **@15°C, 9.0% CO2, N.T.P. (Nat. Gas - G20) |
Optional extras
- Unvented water supply kit - essential for any unvented application and includes an expansion vessel sized for the water heater and local pipework only.
- Top to bottom pump recirculation pump kit to prevent stratification within the solar water heater.
- Remote monitoring unit.
- Dummy sensor kit.
- Room Sealed Flue Systems:
- Concentric flue systems type C13–Horizontal termination.
- Concentric flue systems type C33–Vertical termination.
- Twin duct flue systems type C53–Vertical flue termination with Horizontal air inlet.
- Conventional Open Flue Systems:
- Open flue systems type B23–Vertical termination.
- Choose from a wide range of service contracts to help maintain optimum performance.
- Ensure your new Hamworthy products are set to our recommendations and benefit from improved warranty terms with a commissioning package.