Roberts Gorden service manual BH15ST BH20ST BH25ST BH30ST BH35ST BH40ST BH45ST BH50ST

SECTION 4: Specifications

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4.6 Linear Heater
	BH15ST	BH20ST	BH25ST	BH30ST	BH35ST	BH40ST	BH45ST	BH50ST
Input – kW	15	20	25	30	35	40	45	50
Input – MJ	54	72	90	110	125	138	162	180
Tube Length – mm	6096	9144	9144	12192	12192	12192	15240	15240
Overall Heater Length - mm	6661	9709	9709	12757	12757	12757	15815	15815
Weight – kg	41	55	55	68	68	68	81	81
Heated Area – m2	20-160	30-210	40-265	50-315	55-370	65-420	70-475	80-525
Minimum Installation	2.5	2.5	3.0	3.5	4.6	5.0	5.0	5.0
Height* – m
Recommended Installation	3.0	3.5	3.9	4.2	4.8	5.5	6.7	7.6
Height* – m
4.8 U-Tube Heater
	BH15UT	BH20UT	BH25UT	BH30UT	BH35UT	BH40UT	BH45UT	BH50UT
Input – kW	15	20	25	30	35	40	45	50
Input – MJ	54	72	90	110	125	138	162	180
Tube Length – mm	3323	4843	4843	6363	6363	6363	7998	7998
Overall Heater Length - mm	3893	5417	5417	6941	6941	6941	8465	8465
Weight – kg	39	54	54	65	65	66	96	96
Heated Area – m2	20-160	30-210	40-265	50-315	55-370	65-420	70-475	80-525
Minimum Installation	2.5	2.8	3.5	4.0	5.0	5.0	5.0	5.0
Height* – m
Recommended Installation	3.0	3.5	3.9	4.2	4.8	5.5	6.7	7.6
Height* – m

*Heights quoted are from ground level to bottom face of firing tube.

NOTE:- Factory recommended mounting heights are listed above as a guideline. If infra-red heaters are mounted too low, they may result in heat discomfort. It is generally recommended to observe the recommended mounting heights to optimize comfort conditions. However, certain applications such as spot heating, freeze protection, outdoor patio heating or very high ceilings may result in the heaters being mounted outside of the factory recommended mounting heights. Clearances to combustibles must always be maintained.