Roberts Gorden DAT90, DAT75, DAT100, DAT115 service manual Model 100 115

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SECTION 4: SPECIFICATIONS

4.3Technical Data Table - Heater Section (all models) Appliance Category II 2H/L 3B/P

	Model	75	90	100		115
Heat Input	kW	95	111	119		134
Gross Calorific Value	Btu/h x 1000	324	379	406		457
Heat Input	kW	86	100	107		121
Net Calorific Value	Btu/h x 1000	293	341	365		413
Approximate	kW	78	91	98		111
Max Heat Output	Btu/h x 1000	266	311	334		379
Min Heat Input - Low Fire	kW	66.5	77.7	83.3		93.8
Gross Calorific Value	Btu/h x 1000	227	265	284		320
Min Heat Input - Low Fire	kW	60.2	70	74.9		84.7
Net Calorific Value	Btu/h x 1000	205	239	256		289
Min Heat Output - Low Fire	kW	54.6	63.7	68.6		77.7
Min Heat Output - Low Fire	Btu/h x 1000	186	217	234		265
	Btu/h x 1000	186	217	234		265
*Combination Fan/Limit Thermostat Settings
Set Point 1 Fan OFF Temp.	°C			30
Set Point 2 Fan ON Temp.	°C	50	45		45
Set Point 3 Limit Temp.	°C	85	70		75
Secondary Limit Thermostat	°C			75
Natural Gas (G20) Data - Inlet Pressure 20 mbar Min 17 mbar Max 25 mbar
Max Burner Pressure	mbar	6.6	6.0	6.2		6.3
Max Gas Flow Rate	m3/h	9.0	10.5	11.3		12.8
Max Gas Flow Rate	ft3/h	319	371	398		451
	ft3/h	319	371	398		451
Min Burner Pressure - Low Fire	mbar	3.23	2.9	3.0		3.1
Min Gas Flow Rate	m3/h	6.30	7.4	7.9		9.0
Min Gas Flow Rate	ft3/h	222.5	259.6	279.3		316.4
	ft3/h	222.5	259.6	279.3		316.4
Natural Gas (G25) Data - Inlet Pressure 25 mbar Min 20 mbar Max 30 mbar
Max Burner Pressure	mbar	10.0	9.3	9.2		10.2
Max Gas Flow Rate	m3/h	9.49	11.06	11.86		13.43
Max Gas Flow Rate	ft3/h	335.1	391	419		474
	ft3/h	335.1	391	419		474
Min Burner Pressure - Low Fire	mbar	4.9	4.6	4.5		5.0
Min Gas Flow Rate	m3/h	6.64	7.74	8.30		9.40
Min Gas Flow Rate	ft3/h	234.6	273.4	293.2		332.0
	ft3/h	234.6	273.4	293.2		332.0

LPG Gas Propane (G31) Data - Inlet Pressure 37 mbar (Alternative where permitted 50 mbar) Minimum 25 mbar Maximum 57.5 mbar

Max Burner Pressure	mbar	25.6	27.3		25.3	25.9
	m3/h	3.51	4.09		4.39	4.97
Max Gas Flow Rate	kg/h	6.5	7.58		8.13	9.21
	liquid l/h	12.8	14.9		16.0	18.1
Min Burner Pressure - Low Fire	mbar	12.5	13.4		12.4	12.7
	m3/h	2.46	2.86		3.07	3.48
Min Gas Flow Rate	kg/h	4.55	5.31		5.69	6.45
	liquid l/h	8.96	10.43		11.20	12.67
LPG Butane (G30) Data - Inlet Pressure 29 mbar Min 20 mbar Max 35 mbar
Max Burner Pressure	mbar	18.3	19.4		18.3	18.7
	m3/h	2.65	3.09		3.32	3.75
Max Gas Flow Rate	kg/h	6.5	7.55		8.09	9.17
	liquid l/h	11.3	13.2		14.1	16.0
Min Burner Pressure - Low Fire	mbar	9.0	9.5		9.0	9.2
	m3/h	1.86	2.16		2.32	2.63
Min Gas Flow Rate	kg/h	4.53	5.29		5.66	6.42
	liquid l/h	7.91	9.24		9.87	11.20

Gas rates corrected to standard conditions 1013.25 mbar 15°C.

*See Page 43, Figure 19 for detailed Combination Fan/Limit Thermostat settings.

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Contents DualAir Page 2005 Page Table of Figures Page Product Approval Corrosive Chemicals Clearances to CombustiblesNational Standards and Applicable Codes Critical Considerations 3.1 Basic Information Minimum Required Installation ClearancesElectrical Supply FlueInstallation Clearances and Clearances to Combustibles Front View Left Version Specifications 4.1 DAT all modelsModel 100 115 Fan Data General Technical Data Table all modelsModel 100 115 2 DAT100 and 115 4 kW motor Handling Heater Installation 5.1 GeneralShelf Mounting and Suspension Type B22 Appliance Flue Installation 6.1 Flue InstallationAir Intake Terminal Cover Flue ConversionControl Section & Upper Panel Vertical and Horizontal Flue Termination Type B22 Appliance Open Flued Installation Room Sealed InstallationHeaters Installed Within the Heated Space Building Ventilation14, .1 and to ensure that there is Optional Heater Configurations 8.1 Distribution DuctDepartment for recommendations regarding Duct resistance and design. Tel +44 0Connections Gas Connection with Stainless Steel Flex ConnectorRemote Frost Thermostat Remote ControlSee Page 17, .3 through Page 18, Section Number See Page 20, Section DAT Wiring Diagram ModelsSite wiring connections shown DAT Site Connections at Main Circuit Board Cooling Coils/Condensers Gas Fired HeaterLouvers Electrical ChecksAutomatic Burner Control Box Sequence Commissioning the Gas Valves Combustion Testing all modelsCommissioning the Gas Valve Set Minimum PressureTurning Off the DualAir Unit Pressure SwitchComplete the Commissioning Instruction to the UserSee Page 25, Section See Page 26, SectionHeater Operation See Page 7, .3 and Page 8, FigureSimple Fault Finding all models Burner Lockout Reset ButtonSimple Fault Finding burner faults Cooling Section Operation13.3 Fan/Motor Assembly Maintenance Burner MaintenanceHeat Exchanger Maintenance Servicing 13.1 Servicing InstructionsGas Control Valve Maintenance all models Burner Conversion Conversion Between Gases 14.1 GeneralGas Valves Conduct Commissioning procedure as shown on Page 21, Section Result in death or electrical shock Troubleshooting For Automatic Ignition Burner SystemsStart Troubleshooting for Flame Supervision SystemTroubleshooting for Main Fan Troubleshooting for Solenoid ValvesConduct Commissioning procedure as on Page 21, Section Troubleshooting for Fan ContactorBurner Components Gas Valve Replacement all modelsSee Page 5, Section Gas ValveBurner Injectors Burner CompartmentIgnition Electrode and Flame Probe Remove screws securing outlet flange to the flue adapter See Page 21, Section Heater Pressure SwitchCoil Pressure Switch Pressure SwitchesFilter Pressure Switch 16.7.1 S4563C Models 75 to Ignition ControlFan Motor Removal Fan Removal and Replacement Combination Fan/Limit Thermostat Page Page Some objects can catch fire or explode when placed

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