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360 Defro

Optima Komfort Plus A

Availability: Discontinued
Boiler type: fill opening
Available powers: 8, 10, 12, 15, 20, 25, 30, 35 kW
Controller: S3P with support for 2 pumps (central heating and domestic hot water) and a PID algorithm to maintain a constant boiler temperature. Adjustable control panel position.
Standard equipment: S3P controller (standard ST-28 OPTI with PID for 8KW).
Optional equipment - for an additional fee: K3P controller with mixing valve support, DEFRO MZ mixing valve controller with weather sensor and return protection, GSM module*, Internet module, NZ version for a closed system, leveling feet.

4 years of warranty for the heat exchanger's tightness, 2 years for other components, and the boiler's proper functioning.

Heat exchanger made of certified, high-quality 6mm boiler steel.

High thermal efficiency reaching 81% thanks to increased heat recovery from exhaust gases.

Boiler designed for installation in a closed system, in the OPTIMA COMFORT PLUS NZ version.

Large combustion chamber.

Multipoint system for delivering air to the fuel loading zone.

Water grate.

Door closing force adjustment.

PID control - boiler operation regulation based on exhaust gas temperature.

A manually loaded boiler in which the fuel combustion process is electronically controlled based on the exhaust gas temperature. The controller also regulates the operation of the central heating pump and the domestic hot water pump. Air for the fuel combustion process is forced by a blower fan using a multipoint direct feed system into the fuel combustion zone, significantly improving the process parameters. The high efficiency of the device is ensured by the proven heat exchanger design with horizontal flue gas passages, and a fixed water grate that accelerates the heat uptake from the combustion chamber.
Efficient fuel loading is facilitated by a large, slanted loading opening, and the device’s extended working hours are made possible by a capacious loading chamber. An additional advantage of the boiler is the placement of the flue outlet at a 45° angle, which, in combination with the angled extension of the firebox door, makes it easy to adapt the boiler to existing boiler rooms.

(*) – additional paid option, installed upon customer’s request.

Boiler name Optima Komfort Plus
Boiler specification/type IU 8 10 12 15 20 25 30 35
Power range kW 2,4-8 3,0-10 3,6-12 4,5-15 6,0-20 7,5-25 9,0-30 10,5-35
Heating surface m2 1,2 1,5 1,6 2,0 2,6 2,9 3,6 3,9
Area of ​​heated rooms 1 m2 Up to 110 Up to 140 Up to 150 Up to 200 to 260 Up to 290 Up to 350 Up to 390
Single fuel load. kg ~12 ~19 ~19 ~23 ~31 ~39 ~49 ~57
Optimum thermal efficiency % ~85,0 – 85,8
Energy efficiency class – D D D D D D D D
Max. permissible pressure

working

 bar 1,5
Required exhaust gas draft Pa 18 20 22 23 26 28 30 31
Supply water temperature max. °C 65/85
Boiler weight 2 kg 200 253 258 289 319 372 434 480
Boiler water capacity l 36 50 53 60 72 82 87 111
Cross-section of the chimney cmxcm 14×14 14×14 14×14 14×14 14×14 16×16 17×17 18×18
Cross-section of the chimney Ø mm 160 160 160 160 160 180 190 200
Minimum height of the chimney m 5,5 5,5 6 6 7 7 8 8
Width mm 550 550 550 600 600 650 750 750
Depth / horizontal extension / mm 890 1045 1045 1045 1115 1145 1145 1215
Height / vertical extension / mm 1407 1530 1530 1570 1620 1625 1625 1640
Supply and return diameter Dn mm G1 ½”
Flue diameter mm 127 178 178 178 178 178 178 178
Power supply V/Hz ~230/50
Maximum power consumption. W 39 45 45 45 45 45 45 45
Height to the lower edge of the firebox door / horizontal extension / mm 1080 1165 1165 1210 1260 1265 1265 1275
Hopper chamber dimensions.

as well as the loading opening dimensions.

 width

depth

height

width x height

 258

253

236

258 x 188

 258

268

251

258 x 188

 258

368

251

258 x 188

 308

368

251

308 x 238

 308

438

288

308 x 238

 358

468

288

358 x 238

 458

468

288

358 x 238

 458

537

288

358 x 238

1 The maximum heated area estimated for individual heat demand of q=80 W/m².

2 The weight of the boiler depends on the equipment

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