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GAS FIRED BALANCED FLUE/FAN ASSISTED FLUE
Please read this document carefully before commencing installation, commissioning and/or servicing.
Leave it with the user or attached to the appliance or gas service meter after installation.
Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. All
work must be carried out by appropriately qualified persons.
The manufacturer does not take any responsibility in the event of non-observance of the regulations concerning the
connection of the apparatus causing an evil operation possibly resulting in damage to the apparatus and/or environment
in which the unit is installed.
UNIT HEATER
UDSA-4E
INSTALLATION
COMMISSIONING
SERVICING
These appliances meet the following EC directives
(EU) 2016/426: GAR
DIR 2014/30/EU:EMC
DIR 2014/35/EU:LVD
DIR 2006/42/EC:MD
Revision: I-UDSA-UK (02-19) PN 06 00116 UDSA R3
WARNING
Supersedes: 1711UDSA-4E_GBEN
Subject to modifications
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Table of Contents
Troubleshooting
Related Manuals for Nortek Reznor UDSA055-4E
Summary of Contents for Nortek Reznor UDSA055-4E
- Page 1 Revision: I-UDSA-UK (02-19) PN 06 00116 UDSA R3 Supersedes: 1711UDSA-4E_GBEN GAS FIRED BALANCED FLUE/FAN ASSISTED FLUE UNIT HEATER UDSA-4E INSTALLATION COMMISSIONING SERVICING These appliances meet the following EC directives (EU) 2016/426: GAR DIR 2014/30/EU:EMC DIR 2014/35/EU:LVD DIR 2006/42/EC:MD Please read this document carefully before commencing installation, commissioning and/or servicing. Leave it with the user or attached to the appliance or gas service meter after installation.
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Page 2: Installation Codes
INDEX GENERAL Warnings 1. General Models UDSA-4E are design certified to the CE EN1020 stan- 2. Installation codes dard for use in industrial and commercial installations only. All 3. Warranty models and sizes are available for use with either natural or 4. - Page 3 DIMENSIONS/CLEARANCES (horizontal orientation=standard) Figure 1a : Dimensions/clearances (models 011→100) Front view view Side view Rear view (models 035, 043, and 050) Rear view (models 015→030 and 055→100) 1. Combustion air inlet 2. Flue connection 3. External gas connection 4. Electrical connections 5.
- Page 4 Figure 1b : Dimensions/clearances (models 120 and 145) Side view view 1. Combustion air inlet 2. Flue connection 3. Gas connection 4. Electrical connections Front view Rear view Table 1b : Dimensions (mm) for Models 120 and 145 UDSA-4E 1367 1150 1313 1034 1105 1494 1150 1440...
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Page 5: Technical Data
TECHNICAL DATA Table 4 : Technical data UDSA-4E Gas category II2H3+ Combustion air and flue, type B installation (1) Combustion air and flue, C12, C32, C42,C52, C62, C82 type C installation (1) Flue and combustion air connection collars Heat input (Hs) 13,2 17,6 30,8... -
Page 6: Flue Requirements
FLUE REQUIREMENTS The air heaters may be installed as a balanced flue (type C) IMPORTANT : heater requiring both a combustion air inlet duct and a flue The flue must be installed in accordance with national pipe or as a power vented heater (type B) (the combustion and local regulations. - Page 7 FLUE OUTLET Figure 3 : Type B appliances : combustion air and flue pipe sockets Venter outlet attachment requirements: Depending on the size of flue pipe as determined in Table 5, All models except 035-4E, 043-4E, 050-4E, and 100-4E attach either the flue pipe directly to the collar or a taper-type connector.
- Page 8 AIR SUPPLY Always ensure that adequate combustion air is provided Warning: When these air heaters are installed in type to suit the total installation of all combustion equipment B applications, designed to take air for combustion from the space in which it is installed. Do not restrict in accordance with BS6230 or BS5440 as appropriate.
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Page 9: Location Of Heater
HANGING THE HEATER LOCATION OF HEATER Warning: If touched, the vent pipe and internal heater Warning: Check the supporting structure to verify surfaces that are accessible from outside the heater that it has sufficient load-carrying capacity to support will cause burns. Suspend the heater such that these the unit weight. - Page 10 Figure 6a : Suspending the heater with rods from the Figure 6b : Suspending the heater with rods using the threaded nut retainers rear suspension points Add a nut to lock the M10x1.5 hanger rod to the heater Detail When desired the heaters may be supported by wall brackets. To reduce heat losses through the roof to a minimum and to avoid the occurrence of stratification, it is recommended Supporting in this manner allows the heaters to be placed...
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Page 11: Electrical Connection
Table 7 : Diameter gas connection Warnings: All components of a gas supply system must be leak tested prior to placing equipment in service. Natural Gas/Propane UDSA-4E Connection NEVER TEST FOR LEAKS WITH AN OPEN FLAME. (Inches) Failure to comply could result in personal injury, property →... - Page 12 WIRING DIAGRAM (for illustrative purposes) Lockout Lamp (240v) Lockout Reset Remote Enable (0-10VDC) REZNOR Fan Only Function I-UDSA-UK (02-19) PN 06 00116 UDSA R3, page 12...
- Page 13 If the appliance does not operate, refer to and follow STARTUP the instructions in TO TURN OFF GAS SUPPLY AT THE APPLIANCE below and call your service technician. 9. Thermostat calls for heat, energizing the venter motor. Check installation prior to startup 10.
- Page 14 Burner gas pressure adjustment Adjust room thermostat to call for heat (i.e., above room The gas pressure is set for the required heat input before the ambient temperature) appliance leaves the factory. Provided that the gas supply to the air heater is in accordance with the supply pressure Observe burner gas pressure on manometer and compare described on the appliance data plate, the operating pressure to required pressure on data plate...
- Page 15 IGNITION SYSTEM This heater is equipped with a direct spark integrated control relay. The control relay monitors the safety devices and controls the operation of the venter motor and the gas valve between heat cycles. The time line below illustrates a normal heat cycle.
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Page 16: Maintenance & Service
MAINTENANCE/SERVICE NOTE: If replacement parts are required, use only Warning: If you turn off the power supply, always turn factory-authorized parts. off the gas. The material contained in the MAINTENANCE AND SER- • Check the vent or vent/combustion air system for sound- VICE section of this manual is designed to aid a qualified ness. -
Page 17: Heat Exchanger Maintenance
Figure 11b : Control panel assembly located on a removable bracket 1) Control relay (ER) 2) Terminal blocks 3) Pressure switch (S3) 4) Electronic burner relay fuse 3.15AF HEAT EXCHANGER MAINTENANCE This heater is equipped with a patented T-CORE heat exchanger. 2®... -
Page 18: Burner Maintenance
BURNER MAINTENANCE This heater has a unique one-piece T-CORE burner assembly 5. Disconnect the manifold and move it out of the way. At the 2® designed to provide controlled flame stability without lifting or gas valve, mark and disconnect the connector. Carefully flashback. -
Page 19: Burner Orifice
Figure 14 : Burner removal steps BURNER ORIFICE 2. Remove screws attaching burner The burner orifice normally needs to be replaced only when a change in gas is made. When ordering a replacement orifice, provide (MJ/m ) heating value and specific gravity of gas, as well as the model and serial number of the unit. -
Page 20: Fan Motors
Flame sensor: See Figure 11a and locate the flame sen- Figure 17 : Control relay Brahma TC340A sor. Disconnect the wire, remove the screw and the flame sensor. Clean with an emery cloth.. Control relay: See Figure 17. The electronic burner relay monitors the operation of the heater including ignition. -
Page 21: Venter Motor And Wheel
VENTER MOTOR AND WHEEL Remove dirt and grease from the motor casing, the venter 4. Holding the motor, remove the screws that attach the motor housing, and the venter wheel. Venter motor bearings are plate to the venter housing. Remove the motor and wheel permanently lubricated. -
Page 22: Limit Controls
OPERATING GAS VALVE LIMIT CONTROLS The main operating quick opening gas valve is powered through All units are equipped with temperature activated limit controls. the thermostat and safety controls. The main control valve is of The controls are factory set and non-adjustable. If either set- the diaphragm type providing regulated gas flow and is preset at point is reached, the corresponding limit control will interrupt the factory. -
Page 23: Troubleshooting
TROUBLESHOOTING 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. 1/ Air heater does not operate and lock-out indicator light is off I-UDSA-UK (02-19) PN 06 00116 UDSA R3, page 23... - Page 24 2/ Air heater does not operate and lock-out indicator light is on I-UDSA-UK (02-19) PN 06 00116 UDSA R3, page 24...
- 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...
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Page 28: General Troubleshooting
General troubleshooting Problem Probable Cause Remedy Venter 1. No power to unit Turn on power, check supply fuses or circuit breaker motor will 2. No power to venter motor Check connections at burner relay and/or venter motor terminals not start 3. -
Page 29: Parts List
PARTS LIST Description UDSA-4E Model Part Number Burner control 03 25321 Control relay, DPDT 120 and 145 30 61742 240V Control relay, SPST 120 and 145 30 61748 Spark ignitor 05 25162 Flame sensor 03 401US 195292 All except 120 and 145 03 24959 03 Limit control LC3 120 and 145... - Page 30 CERTIFICATE EC DECLARATION OF CONFORMITY OF MACHINERY (Annex II 1 A of EC Machinery Directive 2006/42/EC) Nortek Global HVAC Belgium nv J&M Sabbestraat 130/A000 B-8930 Menen, Belgium Hereby declares that the following gas-fired unit heaters: UDSA-4E Types 011, 015, 020, 025, 030, 035, 043, 050, 055, 064, 073, 085, 100, 120, 145...
- Page 31 η 93.5 93.1 92.6 92.8 93.3 93.0 93.9 93.7 93.6 93.5 93.9 93.6 93.7 91.1 91.9 capacity (NCV) *Not required for electric warm air heaters Contact details: Nortek Global HVAC, www.reznor.eu I-UDSA-UK (02-19) PN 06 00116 UDSA R3, page 31...
- Page 32 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, Nortek Global HVAC reserves the right to change product specification without due notice.