Roberts Gorden BH-115, BH-60, BH-40, BH-150, BH-175, BH-100, BH-140, BH-200, BH-80 service manual

SECTION 3: CLEARANCES TO COMBUSTIBLES

NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.

2.Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream from where the burner and burner tube connect.

FIGURE 9: U-Tube, Opposite 45° Reflector

B

A

C D

Model

BH-40

BH-60

BH-80

BH-100

BH-115/125 BH-140/150 BH-175/200

(inches)

A B C D

- UNAPPROVED -

8	54	59	22
8	60	65	22
10	64	73	22
10	70	77	22
12	74	83	22
12	76	85	22

(centimeters)

A B C D

- UNAPPROVED -

21 138 150 56

21 153 166 56

26 163 186 56

26 178 196 56

31 188 211 56

31 194 216 56

FIGURE 10: 2-Foot Deco Grille and Protective Grille
					(inches)				(centimeters)
			Model	A	B	C	D	A	B	C	D
		A	BH-40	6	27	52	27	16	69	133	69
			BH-60	6	35	62	35	16	89	158	89
		C	BH-80	6	38	65	38	16	97	166	97
			BH-100	6	40	70	40	16	102	178	102
B	D		BH-115/125	6	46	76	46	16	117	194	117
			BH-140/150	6	50	79	50	16	127	201	127
			BH-175/200	8	52	82	52	21	133	209	133

FIGURE 11: Lower Clearance Shield*

					(inches)				(centimeters)
			Model	A	B	C	D	A	B	C	D
		A	BH-40	6	34	27	34	16	87	69	87
			BH-60	6	39	33	39	16	100	84	100
			BH-80	6	40	38	40	16	102	97	102
		C
B	D
			BH-100	6	50	44	50	16	127	112	127
			BH-115/125	6	54	48	54	16	138	122	138
			BH-140/150	6	55	50	55	16	140	127	140
			BH-175/200		- UNAPPROVED -				- UNAPPROVED -

*When installed in the first 10' (3 m).

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