: : MEL Group : : - Steam Boiler - Tubeless Steam Generator -

The Cyclone is available in a complete package with an optional compact boiler-mounted feedwater system for a finished wired and piped, ready-to-fire unit. Steam outlet valve, slow opening blowdown valve, feedwater shut off valve, and check valves included on boilers through 30Hp.

150# STEAM 4VT CYCLONE SERIES SPECIFICATIONS
	BOILER HORSEPOWER			6	10	15	20	25	30	40	50	60	70	80	100
	STEAM OUTPUT	FROM & AT 212°F	LBS./HR. KG./HR.	207 94	345 156	518 235	69 0313	863 391	1035 469	1380 626	1725 782	2070 939	2415 1095	2760 1252	3450 1565
	GROSS OUTPUT		(MBH), BTU X 1000 KCAL X 1000	201 51	335 84	502 127	670 169	837 211	1004 253	1339 337	1674 422	2009 506	2343 590	2678 675	3348 844
	INPUT REQUIRED		BTU X 1000 KCAL X 1000	251 63.3	418 105	628 158	837 211	1046 264	1255 316	1674 422	2092 527	2511 633	2929 738	3348 844	4184 1054
	FIRING RATE, NAT. GAS	1000BTU/FT³	FT 3/HR. M 3/HR.	251 7.1	418 11.8	628 17.8	837 23.7	1046 29.6	1255 35.5	1674 47.4	2092 59.2	2511 71.1	2929 82.9	3348 94.8	4184 118.5
	FIRING RATE, LP. GAS	91,500 BTU/GAL.	GPH LPH	2.7 10.4	4.6 17.3	6.9 26	9.1 34.6	11.4 43.3	13.7 51.9	18.3 69.2	22.9 86.6	27.4 103.9	32 121.2	36.6 138.5	45.7 173.1
	FIRING RATE, #2 OIL	140.000 BTU	GPH LPH	1.8 6.8	3 11.3	4.5 17	6 22.6	7.5 28.3	9 33.9	12 45.3	14.9 56.6	17.9 67.9	20.9 79.2	23.9 90.5	29.9 113.1
A	STEAM OUTLET	HIGH PRESS.	IN. MM	1 25	1 25	1 25	1 25	1.25 32	1.5 38	2 51	2.5 64	2.5 64	2.5 64	2.5 64	3 76	A
A	STEAM OUTLET	LOW PRESS.	IN. MM	2 51	2 51	2 51	3 76	3 76	4 102	4 102	6 152	6 152	6 152	6 152	6 152	A
B	BLOWDOWN	HIGH PRESS.	IN. MM	1 25	1 25	1 25	1 25	1 25	1.25 32	1.25 32	1.25 32	1.25 32	1.25 32	1.25 32	1.25 32	B
B	BLOWDOWN	LOW PRESS.	IN. MM	1 25	1 25	1 25	1 25	1 25	1.25 32	1.25 32	1.25 32	1.25 32	1.5 38	1.5 38	1.5 38	B
C	FEEDWATER		IN. MM	0.75 19	0.75 19	0.75 19	0.75 19	0.75 19	1 25	1 25	1 25	1 25	1 25	1 25	1.25 32	C
D	STACK DIA.		IN. MM	8 203	8 203	8 203	8 203	8 203	10 254	12 305	12 305	12 305	14 356	14 356	14 356	D
E	STACK HEIGHT		IN. MM	52 1321	52 1321	58 1473	64 1626	64 1626	63 1600	73 1854	83 2108	83 2108	82 2083	82 2083	82 2083	E
F	WIDTH WITHOUT TRIM		IN. MM	35.2 894	35.2 894	35.2 894	35.2 894	35.2 894	41 1041	50 1270	59 1499	59 1499	68 1727	68 1727	78.2 1986	F
G	WIDTH WITH TRIM		IN. MM	42 1067	42 1067	42 1067	42 1067	42 1067	47 1194	55 1397	63 1600	63 1600	72 1829	72 1829	82 2083	G
H	OVERALL HEIGHT		IN. MM	79 2007	79 2007	85 2159	85 2159	85 2159	85 2159	93 2362	105 2667	105 2667	106 2692	106 2692	110 2794	H
I	HEIGHT WITHOUT TRIM		IN. MM	65 1651	65 1651	71 1803	77 1956	77 1956	77 1956	88 2235	99 2515	99 2515	99 2515	99 2515	99 2515	I
J	LENGTH		IN. MM	60 1524	60 1524	60 1524	60 1524	60 1524	78 1981	87 2210	115 2921	115 2921	120 3048	120 3048	127 3226	J
	WATER CAP. @ NWL		GALS. LITERS	48 182	48 182	54 204	54 204	54 204	73 276	118 447	151 572	151 572	187 708	187 708	274 1037
	WATER CAP. FLOODED		GALS. LITERS	62 235	62 235	68 257	79 299	79 299	113 428	208 787	313 1185	313 1185	440 1665	440 1665	581 2199
	SHIPPING WEIGHT		LBS. KG.	1700 771	1700 771	1850 839	1900 862	1900 862	2300 1043	3900 1769	5500 2495	5500 2495	7600 3447	7600 3447	9100 4128
	BOILER HORSEPOWER			6	10	15	20	25	30	40	50	60	70	80	100

STANDARD FEATURES

INSPECTION ACCESS

The waterside openings are located in the most effective positions. The lower handholes offer far better access for both cleanout and inspection.
These more functional locations avoid the obstructing handhole “tunnels” used by our competitors.
The top opening offers a strategic view of the furnace crown sheet.

MORE STEAM STORAGE

Capacity to handle swing and spike loads - quick recovery - quick response.
The larger steam-release surface is calmer, reducing carry over of unevaporated water.
The resulting drier steam also reduces system scaling.
In addition, dry steam helps to eliminate unnecessary extra condensate. Energy and fuel are saved. Longer life results.

FOUR-PASS DESIGN

The gases leaving the furnace are split four ways and travel through four individual serpentine fin passages to the stack outlet.
Each quarter of the heat
travels its own four-pass path (see illustration below).
Heat transfers evenly to the fins and boiler shell, eliminating the metal stress due to uneven heat transfer common in other designs.

This illustration shows the progression of four gas paths around the circumference of the boiler shell.

Primary-pass in furnace pipe.
Second-pass follows path through fins along outside of shell.
Third-pass follows path through fins along outside of shell.
Fourth-pass follows path through fins along outside of shell, then merges together to exit exhaust stack.

Four Pass High-Pressure Tubeless Boilers

OPTIONS AND ALTERNATIVES

We specialize in customizing your boiler. The Cyclone can be equipped to suit a wide variety of installations and specifications. We will help direct you to the most cost-effective models and features.

SIMPLE INSTALLATION

Unit is skid mounted for easy handling.
Factory wired with wiring schematic included in the manual.
Efficient and space saving layout.

AVAILABLE ACCESSORIES

The Cyclone is available in a complete package with an optional compact boiler-mounted feedwater system for a finished wired and piped, ready-to-fire unit.
Blowdown separators are also available.

TURBULENT FLAME

Heat is forced down, with the fire whirling and spinning against its natural flow. This pattern enhances recirculation, mixing and heat transfer, driving more energy into the water for greater fuel-to-steam efficiency.

RELIABILITY

The furnace crown is water cooled, eliminating troublesome refractory breakdown inherent in units of inferior design.
No fire tubes, water coils or “in the fire” mud rings to burn out.

“EYE HIGH” BURNER

No step ladder is needed to service.
No bending over or sitting on the floor.
The air intake is located in the center of the unit so dust is not pulled from the floor.

Steam outlet valve, slow opening blowdown valve, feedwater shut off valve, and check valves included on boilers through 30Hp.

DURABILITY

Fire does not pass under the bottom mud ring, eliminating the blistering that occurs with other designs.
Cooler furnace gases are located at the bottom of the vessel where scale is most likely to occur. Baking of scale is alleviated.

EASIER SERVICE

Fireside fin access in top and bottom.
Access opening above feedwater inlet for easy cleaning.
Thoughtfully engineered with the owner in mind.
No heavy doors or covers to complicate service procedures.

SAFETY

Electrical components are located away from the floor, helping eliminate the possibility of water coming in contact with electricity.
Boiler built to ASME Section 1, High Pressure Boiler Code.
CSD-1 approved.
Burner/Boiler UL Packaged.