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5603 878 - 04
Vitoflex 300-RF Installation & Operating
Technical Data
Mechanical
Boiler model
RF 150
RF 220
RF 300
RF 400
RF 540
Maximum output
MBH (kW)
512 (150)
751 (220)
1024 (300)
1365 (400)
1843 (540)
Minimum output
1
MBH (kW)
154 (45)
205 (60)
273 (80)
341 (100)
478 (140)
Efficiency
--
85%
Fuel moisture content
2
%
W 35
Size of wood chips
3
--
G 30 / G 50 as per CAN/CSA-B366. 1-M91
Flue gas figures
Connection flue gas pipe
7
A
Mass flow rate; W5; O
2
6%
Volume flow; W5; O
2
6%; 150ºC (302º F)
Mass flow rate; W35; O
2
8%;
Volume flow;W35; O
2
8%; 150°C (302º F)
Average flue gas temperature at full load
4
Average flue gas temperature at partial load
4
Chimney draft required
in. (mm)
lb/s (g/s)
ft³/s (m³/s)
lb/s (g/s)
ft³/s (m³/s)
°F (°C)
°F (°C)
Pa
9
7
/
8
(250)
0.18 (80.4)
3.1 (0.09)
0.24 (106.9)
4.2 (0.12)
9
7
/
8
(250)
0.26 (117.9)
4.9 (0.14)
0.35 (156.9)
6.7 (0.19)
11
7
/
8
(300)
0.35 (160.8)
6.7 (0.19)
0.47 (213.9)
8.8 (0.25)
13
7
/
8
(350)
0.47 (214.4)
8.8 (0.25)
0.63 (285.2)
12.0 (0.34)
13
7
/
8
(350)
0.64 (289.44)
12.4 (0.35)
0.85 (385.1)
16.2 (0.46)
320 (160)
266 (130)
±0
Electrical connections
Electrical connections, total
Igniter
Flue gas exhaust blower
Rotary blower
In-feed auger
Grate drive unit
Electric power consumption at full load
Electric power consumption at partial load
kW
kW
kW
kW
kW
kW
kW
kW
2.67
1.6
0.55
0.12
0.37
0.03
1.032
0.355
2.85
1.6
0.55
0.12
0.55
0.03
1.108
0.369
3.6
1.6
0.75
0.12
1.1
0.03
1.521
0.434
3.98
1.6
1.1
0.12
1.1
0.06
1.868
0.480
3.63
1.6
1.1
0.12
0.75
0.06
1.753
0.460
Heating
Water side resistance (diff. 27°F/15 K)
Boiler water volume
Heating surface
Volume on heating gas side
Volume of ash container for grate ash
Volume of ash container for flue gas cyclone
Test pressure
5
Maximum allowable working pressure (water)
5
Maximum water temperature
Minimum return temperature
“wc (mbar)
USG (L)
ft² (m²)
USG (L)
USG (L)
USG (L)
psi (bar)
psi (bar)
°F (°C)
°F (°C)
13 (38)
114 (430)
116.3 (10.8)
99 (374)
8 (32)
30 (76)
209 (790)
172.3 (16.0)
197 (744)
12 (45)
16 (42)
238 (900)
222.9 (20.7)
233 (883)
15 (55)
11 (29)
350 (1330)
310.1 (28.8)
354 (1340)
20 (75)
22 (56)
399 (1510)
424.1 (39.4)
426 (1613)
24 (91)
24 (90)
60 or 90 (4 or 6)
30 or 60 (2 or 4)
250 (120)
149 (65)
Weight
Weight of combustion chamber
Weight of pressure vessel (30 psi)
6
Weight of pressure vessel (60 psi)
6
Weight of displacement rods
Weight of flue gas exhaust blower
Weight of in-feed auger
Total weight without water (30 psi)
7
Total weight without water (60 psi)
7
Total weight with water (30 psi)
7
Total weight with water (60 psi)
7
lb. (kg)
lb. (kg)
lb. (kg)
lb. (kg)
lb. (kg)
lb. (kg)
lb. (kg)
lb. (kg)
lb. (kg)
lb. (kg)
1049 (477)
4885 (2216)
4974 (2256)
191 (87)
88 (40)
315 (143)
6532 (2963)
6620 (3003)
7485 (3395)
7573 (3435)
1278 (581)
6535 (2964)
6667 (3024)
310 (141)
88 (40)
315 (143)
8530 (3869)
8662 (3929)
10280 (4663)
10412 (4723)
1410 (641)
7408 (3360)
7452 (3380)
359 (163)
99 (45)
315 (143)
9595 (4352)
9639 (4372)
11585 (5255)
11629 (5275)
1712 (778)
9764 (4429)
9875 (4479)
484 (220)
136 (62)
315 (143)
12416 (5632
12527 (5682)
15340 (6958)
15450 (7008)
2061 (937)
11233 (5095)
11453 (5195)
636 (289)
136 (62)
328 (149)
14401 (6532)
14621 (6632)
17730 (8042)
17950 (8142)
1
Minimum load:
Operation with modulated control (Infinitely variable power control)
Low load with ON Qmin / OFF (Stop-and-go mode)
2
Moist fuels:
>W35 further limitations regarding output, degree of efficiency and control behavior. >35%
MC will limit the output, decrease efficiency and introduce sub optimum control of
combustion etc. In addition, the quote for Vitoflex 300 RF is insufficient to allow for complete
combustion of fuels in excess of 35% moisture content.
3
Specification:
See section on Wood Fuel Requirements
4
Flue gas temperature: An increase is possible by removing the displacement rods [Full load 86°F (30°C);
Partial load 50°F (10°C)]
5
Pressure:
Per ASME Sec. IV
6
Weight:
Includes door and refractory concrete lining
7
Overall weight:
Includes displacement rods
Other influences:
Fuel, water content, ash content, pneumatic cleaning system yes/no; track time
(number of operating hours without cleaning).
Specifications for the start of the track time [toward the end of the track time there
is an increase in the flue gas temperature by approx. 68°F (20°C)]
