Specification of Solar Water Heaters

1. All medium-bearing parts are made of brass
2. Integrated BS Plus Controller
3. All connections 3/4” female
4. With Pre-assembled steel wall bracket
5. Full port ball valve in return pipe is noise-free, low pressure drop, manual opener for faster line drain service, spring-actuated - special design for solar thermal applications
6. Large ball valve handles for easy grip, and visible closing position
7. Air-Scoop in the supply line for a permanent degassing of the heat transfer medium
8. Function-optimized design insulation made of durable elastic EPP; 100% insulation of the fittings - excellent pump ventilation and cooling
9. Solar safety assembly Pressure relief valve 86 PSI high-temperature manometer 0 - 90 PSI with Drain valve for flushing and filling, flat sealing connection for expansion tank
10. Full metal solar thermometer, 32-320°F (0 - 160°C) can be pulled-off, with immersion sleeve being integrated in the ball valve
11. Fully assembled with flat sealing union connections at most joints
12. Pump can be isolated for servicing
13. Flow meter Flow quantity measuring device with balancing valve, 1-13 l/m
14. Flushing and draining unit integrated two drain valves (at the Flow meter and at the safety group) enable the filling and flushing of the system
15. Wilo Star 3 speed pump S21

1. All medium-bearing parts are made of brass
2. All connections 1/2“ female
3. With Pre-assembled steel wall bracket,
4. Full port ball valve in return pipe is noise-free, low pressure drop, manual opener for faster line drain service, spring-actuated - special design for solar thermal applications
5. Large ball valve handles for easy grip, and visible closing position
6. Air-Scoop in the supply line for a permanent degassing of the heat transfer medium
7. Function-optimized design insulation made of durable elastic EPP; 100% insulation of the fittings - excellent pump ventilation and cooling
8. Solar safety assembly Pressure relief valve 86 PSI high-temperature manometer 0 - 90 PSI with Drain valve for flushing and filling, flat sealing connection for expansion tank
9. Integrated solar thermometer and Pressure gauge, 32-320°F (0 - 160°C) can be pulled-off, with immersion sleeve being integrated in the ball valve
10. Pump can be isolated for servicing
11. Flow meter Flow quantity measuring device with balancing valve, 1-13 l/m
12. Flushing and draining unit integrated two drain valves (at the Flow meter and at the safety group) enable the filling and flushing of the system
13. Wilo Star 3 speed pump S16

The RESOL DeltaSol® BS Plus system controller is for standard solar thermal systems with 2 standard-relays allowing control of two zones such as water and AUX heating zone. It has an additional aqua stat function preprogramed for different hydraulic layouts and is equipped with energy metering.

1. Illuminated system-monitoring-display
2. Up to 4 temperature sensors Pt1000
3. 2 standard-relay outputs and two tanks and two collector fields
4. 9 basic layouts are selectable
5. Heat balancing, tube collector function
6. Energy metering
7. Function control
8. Programming and remote control of the system via RESOL Service Center Software possible
9. RESOL VBus®
10. Real Time Clock (timer function)
11. Aqua stat function
12. Emergency shut down and cooling function
13. System Cooling & Collector Cooling
14. Freeze protection
15. Vacuum tube collector function

The RESOL DeltaSol® AL Is a basic solar differential controller and offers a clear operating concept and is equipped with the newly developed illuminated display with system-monitoring. Flashing symbols for sensors, pumps and valves enable an immediate display of temperatures, temperature differences and active outputs. Adjustment and control of the solar system can be easily carried out.

1. Illuminated system-monitoring-display
2. Up to 3 temperature sensors Pt1000
3. Solar operating hours counter
4. 1 basic solar system control with one tank and one collector field
5. Basic Pool Controller
6. Heat balancing, tube collector function
7. Energy metering
8. Function control
9. Enclosure in outstanding design and easy user friendly operation
10. Emergency shut down and cooling function
11. Freeze protection
12. System Cooling & Collector Cooling

1. G-GLASS porcelain fused-to-steel is impervious to chlorine and caustics - the ideal water vessel
2. 1” NPT connections
3. 2” Non-CFC zero ozone depleting foam insulation
4. Two magnesium anodes
5. Factory installed brass drain valve
6. Factory installed T&P valve
7. 3-Year tank and heat exchanger warranty - non-residential application
8. Precision manufactured tank - high quality steel to assure strength and durability
9. 6-Year tank and heat exchanger warranty - residential application