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Buffer tanks with one coil of the Maxi type are characterized by a large coil surface area, making them suitable for connecting a heat pump (low-temperature heating fluid) due to their substantial heat exchange surface. The insulation is made of polyurethane foam or removable PU sponge. The buffer tank is enclosed in an aesthetic gray casing.
| Model | 16.200B-1M | 16.300B-1M | 16.400B-1M | 16.500B-1M | 16.600B-1M | 16.800B-1M | 16.1000B-1M | ||||
| Nominal Capacity | L | 189 | 276 | 332 | 476 | 547 | 775 | 897 | |||
| Lower Coil | Surface Area | m2 | 1.9 | 3.2 | 4.5 | 4.8 | 5.1 | 6.0 | 6.5 | ||
| Capacity | L | 9.4 | 15.8 | 23.5 | 25 | 26.2 | 31 | 33.4 | |||
| Maximum Operating Temp. and Pressure of Tank | 95 掳C / 3 Bar | ||||||||||
| Maximum Operating Temp. and Pressure of Coils | 95 掳C / 6 Bar | ||||||||||
| Insulation | PUR | Removable | |||||||||
| Weight | kg | 103 | 145 | 186 | 199 | 222 | 276 | 300 | |||

| KP | Connection Fitting | G 6/4" W/F |
| OZ | Tank Vent | G 6/4" W/F |
| ZWD | Lower Coil Inlet | G 1" W/F |
| PWD | Lower Coil Outlet | G 1" W/F |
| CT | Temperature Sensor Sleeve | G 1/2" W/F |
| A | B | C | D | E | F | G | H | I | J | K | |
| 16.200B-1M | 1247 | 1025 | 600 | 500 | 748 | 471 | 195 | 195 | 471 | 748 | 1025 |
| 16.300B-1M | 1512 | 1275 | 650 | 550 | 935 | 545 | 205 | 205 | 545 | 935 | 1275 |
| 16.400B-1M | 1762 | 1525 | 650 | 550 | 1025 | 645 | 205 | 205 | 645 | 1085 | 1525 |
| 16.500B-1M | 1707 | 1469 | 750 | 650 | 1054 | 634 | 219 | 219 | 634 | 1054 | 1469 |
| 16.600B-1M | 2007 | 1774 | 850 | 650 | 1259 | 739 | 219 | 219 | 739 | 1259 | 1774 |
| 16.800B-1M | 1867 | 1557 | 1000 | 800 | 1124 | 691 | 258 | 258 | 691 | 1124 | 1557 |
| 16.1000B-1M | 2087 | 1778 | 1000 | 800 | 1278 | 758 | 258 | 258 | 758 | 1278 | 1778 |
| Class | C |
| Thread diameter [ inch ] | 6⁄4'' |
| Installation | Vertical, Floor, Internal |
| Max. working temperature [ 掳C ] | 95 |
| Max. operating pressure [ bar ] | 3, 6 |
| Insulation | Polyurethane (PU), Polyurethane foam |
| Warranty | 2 years for components, 5 years |
| Coil | 1 coil |
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