Roberts Gorden BH-175, BH-60 General Specifications, GAS Pressure AT Manifold, Pipe Connection

	SECTION 14: GENERAL SPECIFICATIONS
SECTION 14: GENERAL SPECIFICATIONS
14.1 Material Specifications	14.3 Suspension Specifications
14.1.1 Reflectors	Hang heater with materials with a minimum working
.024 Aluminum	load of 75 lbs (33 kg). See Page 15, Figure 14.
(Optional .024 Stainless Steel Type 304)	14.4 Controls Specifications
14.2 Heater Specifications	Time switches, thermostats, etc. can be wired into
14.2.1 Ignition	the electrical supply. External controls supplied as an
Fully automatic, three-try, direct spark, electronic	optional extra.

ignition control, 100% safety shut-off.

General Specifications for BH-Series heaters are as follows:

End View	Side View		Reflector
12.5"					Turbulator (select models)
(32 cm)
12.5"			Burner Tube	Minimum Length A
	11"
(32 cm)
	(28 cm)
	Heat Input Rate	Length “A”		Recommended
				Minimum Mounting Height*
Model	(Btu/h) x (1000)	Minimum		Space	Spot
BH-40	40	10' (3 m)		8-10' (2.4 - 3 m)	8'(2.4 m)
BH-60	60	20' (6 m)		10-12' (3 - 3.6 m)	9' (2.7 m)
BH-80	80	20' (6 m)		12-15' (3.6 - 4.5 m)	11'	(3.3 m)
BH-100	100	30' (9 m)		12-15' (3.6 - 4.5 m)	12'	(3.7 m)
BH-115	115	30' (9 m)		15-20' (4.5 - 6 m)	15'	(4.6 m)
BH-125	125	40'	(12 m)	15-20' (4.5 - 6 m)	15'	(4.6 m)
BH-140	140	40'	(12 m)	20-25' (6 - 7.6 m)	20'	(6.1 m)
BH-150	150	50'	(15 m)	20-25' (6 - 7.6 m)	20'	(6.1 m)
BH-175	175	50'	(15 m)	25' (7.6 m)	23' (7 m)
BH-200	200	60'	(18 m)	25' (7.6 m)	25'	(7.6 m)

*See Page 5, Section 3 for clearances to combustibles.

GAS PRESSURE AT MANIFOLD:

Natural Gas:	3.5" wc
LP Gas:	10.5" wc

PIPE CONNECTION:

1/2" NPT (for BH-40, 60, 80, 100, 115 & 125) 3/4" NPT (for BH- 140, 150,175 & 200)

DIMENSIONS:

Vent Connection Size: 4" (10 cm)

Outside Air Connection Size: 4" (10 cm)

Refer to figure above for dimensional information.

GAS INLET PRESSURE:
Natural Gas:
for BH-40, 60, 80, 100,
115, 125, 140, 150	4.6" wc Minimum
for BH-175, 200	5.0" wc	Minimum
	14.0" wc	Maximum
LP Gas:	11.0" wc	Minimum
	14.0" wc Maximum

ELECTRICAL RATING (ALL MODELS):

120 V - 60 Hz, 1 A

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