Roberts Gorden HE-80 U-TUBE, OPPOSITE 45 REFLECTOR, 2-FOOT DECO GRILLE AND PROTECTIVE GRILLE

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

A

B C

D

Model

HE-40 HE-60 HE-80 HE-100 HE-125 HE-150 HE-175

(inches)

A B C D

- UNAPPROVED -

8	54	60	22
8	60	66	22
10	64	74	22
10	70	78	22
12	74	84	22
12	76	85	22

(centimeters)

A B C D

- UNAPPROVED -

21 138 153 56

21 153 168 56

26 163 188 56

26 178 199 56

31 188 214 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
	HE-40	6	27	53	27	16	69	135	69
A

			HE-60	6	35	63	35	16	89	161	89
			HE-80	6	38	66	38	16	97	168	97
C			HE-100	6	40	71	40	16	102	181	102
	B	D	HE-125	6	46	77	46	16	117	196	117
			HE-150	6	50	80	50	16	127	204	127
			HE-175	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			HE-40	6	34	27	34	16	87	69	87
			HE-60	6	39	33	39	16	100	84	100
			HE-80	6	40	38	40	16	102	97	102
C	B	D	HE-100	6	50	44	50	16	127	112	127

HE-125	6	54	48	54	16	138	122	138
HE-150	6	55	50	55	16	140	127	140
HE-175		- UNAPPROVED -				- UNAPPROVED -

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

9