Nortek Reznor UDSA-4E 011 Installation, Commissioning, Servicing Download Page 23 | Manualshive

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I-UDSA-UK (02-19) PN 06 00116 UDSA R3, page 23

The integrated control relay monitors the operation of the heater. If the heater fails to operate properly, review the flow chart below

and see the operating sequence in section 16.
The general troubleshooting charts on the following pages will also help you to determine the problem.

24

TROUBLESHOOTING

1/ Air heater does not operate and lock-out indicator light is off

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Summary of Contents for Reznor UDSA-4E 011

Page 1: ...he appliance or gas service meter after installation WARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death All work must be carried out b...

Page 2: ...e supervised to ensure that they do not play with the appliance These units must be installed in accordance with BS6230 or BS5440 as appropriate plus all local building codes Models UDSA 4E are design...

Page 3: ...00 267 404 696 546 131 191 129 67 85 413 15 5 98 350 120 413 250 015 020 383 700 343 404 723 546 199 5 191 139 122 86 413 15 5 98 350 120 413 450 025 030 586 700 546 404 771 546 367 5 191 222 122 121...

Page 4: ...stible supports Table 3 Gas Connection Diameters Diameters UDSA 4E 008 011 015 020 025 030 035 043 050 055 064 073 085 100 120 145 Flue air inlet diameter mm 80 100 130 Gas connection diameter inches...

Page 5: ...e heater with A 160m Q 2 Table 4 Technical data UDSA 4E 011 015 020 025 030 035 043 050 055 064 073 085 100 120 145 Gas category II2H3 Combustion air and flue type B installation 1 B22 Combustion air...

Page 6: ...t duct and a flue pipe or as a power vented heater type B the combustion air is taken from the space where heater is installed which requires only a flue pipe exhausting to outdoors All products of co...

Page 7: ...must be at least 150 mm away from any combustible material B22 roof B22 wall Warning Single wall flue pipe exposed to cold air or run through unheated areas should be insulated to avoid condensation...

Page 8: ...ombustion from the space in which it is installed Do not restrict the combustion air intake Always ensure that adequate combustion air is provided to suit the total installation of all combustion equi...

Page 9: ...d toward the exposed walls In large areas units should be located to discharge air along exposed walls with extra units provided to discharge air in toward the centre of the area For optimum results h...

Page 10: ...s Support gas piping with pipe hangers metal strapping or other suitable material Do not rely on the heater to support the gas pipe Figure 6a Suspending the heater with rods from the threaded nut reta...

Page 11: ...in draughty areas or where it may be influenced by heat sources e g the sun process plant etc The thermostat should be mounted on a vibration free surface and mounted about 1 5 metres above floor lev...

Page 12: ...Heater Specification UDSA V4 E Series Modulating Burner Control Brahma TC340A Legend Heater Terminals Controls Terminals Notes 1 Link wires MUST be fitted where shown solid 2 Terminals shown may not b...

Page 13: ...cian to inspect the appliance and to replace any part of the control system and any gas control When overheating occurs or when gas supply is not turned off shut the manual gas tap before turning off...

Page 14: ...soundness Reset temperature control room thermostat to comfort operating level Figure 10 Gas valve models 050 4E 145 4E Table 8 Burner jets and pressures Diameters Pressures UDSA 4E 011 015 020 025 03...

Page 15: ...e gas valve being energized and the flame sensor checking for flame NOTE If no flame is sensed the burner relay will attempt ignition five times before going into lock out mode Post purge time The 5 m...

Page 16: ...eful to reassemble cor rectly to ensure that no unsafe conditions are created When starting the heater always follow the lighting instructions on the heater Warning If you turn off the power supply al...

Page 17: ...rminal blocks 3 Pressure switch S3 4 Electronic burner relay fuse 3 15AF This heater is equipped with a patented T CORE2 heat exchanger Remove any external dirt or dust accumulation Visually check the...

Page 18: ...he union outside of the cabinet 4 Open the access door Figure 12a Figure 12b 15 BURNER MAINTENANCE 5 Disconnect the manifold and move it out of the way At the gas valve mark and disconnect the connect...

Page 19: ...osite order Ignitor See Figure 11a and locate the ignitor Disconnect the wire remove the screw and the ignitor Clean the ignitor as sembly with an emery cloth Spark gap must be maintained to 3 mm see...

Page 20: ...ition Do not open the control relay Each heating season check the lead wires for insulation deterioration and good connections Proper operation of the direct spark ignition system re quires a minimum...

Page 21: ...el position on shaft Figure 18a Venter motor and wheel assembly models 011 020 Rotation clockwise from motor shaft end Figure 18b Venter motor and wheel assembly models 025 and 030 Rotation clockwise...

Page 22: ...es that proper com bustion airflow is available The switch senses the differential pressure between the negative pressure in the flue gas collec tor box and the pressure in the control section On star...

Page 23: ...ater If the heater fails to operate properly review the flow chart below and see the operating sequence in section 16 The general troubleshooting charts on the following pages will also help you to de...

Page 24: ...I UDSA UK 02 19 PN 06 00116 UDSA R3 page 24 2 Air heater does not operate and lock out indicator light is on...

Page 25: ...I UDSA UK 02 19 PN 06 00116 UDSA R3 page 25...

Page 26: ...I UDSA UK 02 19 PN 06 00116 UDSA R3 page 26...

Page 27: ...I UDSA UK 02 19 PN 06 00116 UDSA R3 page 27...

Page 28: ...eplace worn or grounded spark cable Replace ceramic spark electrode if cracked or grounded Check burner relay ground wire Ensure that unit is properly field grounded earthed and properly phased L1 to...

Page 29: ...lamp All 60 61997 Reset switch All 60 61998 Gas valve natural gas modureg 011 043 03 25140M 050 145 03 35145 Gas valve plug and wire 011 043 03 25141 V1 050 145 03 25136 V1 Two stage head 011 100 03...

Page 30: ...tioned machinery directive Complies with the requirements of further directives namely EU 2016 426 GAR EMC 2014 30 EU LVD 2014 35 EU The following harmonized standards have been applied EN 1020 Non do...

Page 31: ...Useful Efficiency Useful efficiency at rated heating capacity nom 84 2 83 8 83 4 83 6 84 0 83 7 84 6 84 4 84 3 84 2 82 8 84 3 84 2 82 0 82 8 Useful efficiency at minimum capacity pl 82 4 81 8 81 4 82...

Page 32: ...gdom Tel 01384 489250 Fax 01384 489707 reznorsales nortek com www reznor eu Nortek Global HVAC is a registered trademark of the Nortek Global HVAC limited Because of the continuous product innovation...

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