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1611UDSBD-3GBEN
UDSBD 015-3, 020-3, 025-3, 030-3
Gas fi red Balanced fl ue / Fan assisted fl ue
unit heater with centrifugal fan
INSTALLATION
COMMISSIONING
SERVICING
These appliances meet the following EC Directives:
DIR 2009/142/EC:GAD
DIR 2014/30/EU:EMC
DIR 2014/35/EU:LVD
DIR 2006/42/EC:MD
WARNING
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 qualifi ed persons.
The manufacturer does not take any responsibility in the event of non-observance of the regulations concerning
the connection of the apparatus causing a dangerous operation possibly resulting in damage to the apparatus and/or
environment in which the unit is installed.
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Table of Contents
Related Manuals for Nortek REZNOR UDSBD 015-3
Summary of Contents for Nortek REZNOR UDSBD 015-3
- Page 1 1611UDSBD-3GBEN UDSBD 015-3, 020-3, 025-3, 030-3 Gas fi red Balanced fl ue / Fan assisted fl ue unit heater with centrifugal fan INSTALLATION COMMISSIONING SERVICING These appliances meet the following EC Directives: DIR 2009/142/EC:GAD DIR 2014/30/EU:EMC DIR 2014/35/EU:LVD DIR 2006/42/EC:MD WARNING Please read this document carefully before commencing installation, commissioning and/or servicing.
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Page 2: Table Of Contents
INDEX Warnings ..........................3 1. General ........................4 2. Installation codes .......................4 3. Warranty ........................4 4. Uncrating and preparation ..................4 5. Dimensions ........................5 6. Technical data ......................8 7. Flue requirements .......................10 8. Unit heater location ....................15 9. Hanging the unit ......................16 10. Gas piping and pressures ...................17 11. -
Page 3: Warnings
Warnings FOR YOUR SAFETY What to do if you smell gas: • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. • Immediately call your gas supplier. •... -
Page 4: General
1. General Models UDSBD 015-3 through 030-3 are design certifi ed to the CE EN1020 stan- dard for use in industrial and commercial installations only. All models and sizes are available for use with either natural, propane or butane gas with operating tem- perature between -15°C and 40°C. -
Page 5: Dimensions
5. Dimensions & Clearances (horizontal orientation = standard) Figure 1a : UDSBD 015-3 -> 020-3 Top view Rear view Side view Front view Legend: 1. Combustion air inlet 2. Flue connection 3. External gas connection 4. Electrical connections 5. Service panel Table 1a : Dimensions (mm) UDSA-3 199,5... - Page 6 Figure 1b : UDSBD 025-3, 030-3 Top view Rear view Rear view mod. 035-2, 043-2 & 050-2 Front view Side view Rear view mod. 055-2 & 064-2 Legend: 1. Combustion air inlet 2. Flue connection 3. External gas connection 4. Electrical connections 5.
- Page 7 Clearances (mm) Units must be installed so that the minimum clearances in the following table are provided for combustion air space, inspection and service and for proper spacing from combustible materials. Table 2 : Clearances (mm) UDSA-3 Z (*) 015 - 030 (*) : Heaters can be base mounted on suitable non combustible supports.
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Page 8: Technical Data
6. Technical The UDSBD-3 units are fi tted with a new type of Nicotra blower with EC motor. data The blower can be used on a variety of different speeds. The motor speed is adjustable by use of a potentiometer (see table below ). The units leaving the factory are set to the speed requested by the customer. - Page 9 3/020-3 Figure 2a : Blower curve for UDSBD 015- Figure 2b : Blower curve for UDSBD 025-3/030-3 1611UDSBD-3GBEN, Pag. 9/36...
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Page 10: Flue Requirements
7. Flue Model UDSBD-3 heaters may be installed as Type-B and Type-C installations. requirements Local requirements may apply in addition to national requirements. These unit heaters are designed to operate safely and effi ciently with either a horizontal or vertical fl ue system when installed with the specifi c requirements and instructions. If this heater is replacing an existing heater, be sure that the fl... - Page 11 Flue pipe diameters and maximum pipe lengths in table 5 apply to both horizontal Diameter & maximum and vertical systems. Add all straight sections and equivalent lengths for elbow. fl ue pipe lengths The total combined length must not exceed the maximum fl ue length. Table 5 : maximum fl...
- Page 12 Flues for power If the air heater is to be installed as a type B appliance, air for combustion will be taken from within the space where the heater is installed. Ensure that an adequate ventedinstallations air supply for combustion and ventilation is provided within the building in ac- (type B appliances) cordance with BS6230/BS5440 plus other relevant regulations &...
- Page 13 Air supply It is important to ensure that there is an adequate air supply at all times for both combustion and heating requirements. Modern buildings involve greater use of WARNING : insulation, improved vapour barriers, and weather proofi ng. These practices mean When these air heaters that buildings are sealed much tighter than in the past.
- Page 14 Figure 5 : Type C appli- ances : Combustion air Models 015-3 & and fl ue pipe sockets 020-3 Models 025-3 & 030-3 1) Flue pipe outlet collar 2) Combustion air pipe inlet collar Models 035-2, 043-2 & 050-2 1611UDSBD-3GBEN, Pag. 14/36...
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Page 15: Unit Heater Location
8. Location Use the minimum clearances in section 5 and the throw data in the technical data heater table of section 6 when determining where to suspend the heater. Remark: WARNING: If touched, the vent pipe and internal heater surfaces Flue requirements that are accessible from outside the heater will cause burns. -
Page 16: Hanging The Unit
9. Hanging Before suspending the heater, check the supporting structure to verify that it has the heater suffi cient load-carrying capacity to support the weight of the unit as specifi ed in table 4. Leave the unit on the pallet. If the bottom of the unit is not supported or protected WARNING: damage can occur. -
Page 17: Gas Piping And Pressures
10. Gas Piping Warning : This appliance is equipped for a maximum gas supply pressure of 50 mbar. pressures Warning : Pressure testing supply piping Test pressures above 50mbar : Disconnect the heater and manual valve from the gas supply line which is to be tested. Cap or plug the supply line. WARNING: All Test pressures below 50mbar : Before testing, close the manual valve on the components of a... -
Page 18: Electrical Supply And Connections
11. Electrical The electrical installation may only be carried out by an appropriately qualifi ed person current to IEE Regulations. The supply line to the heater should include supply and a main switch. The minimum clearance distance between the contacts must be connections more than 3 mm. - Page 19 Figure 8 : Wiring connections on the terminal board (only for illustrative purposes) 1611UDSBD-3GBEN, Pag. 19/36...
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Page 20: Check Installation And Start Up
12. Check Check suspension. Unit must be secure.Verify that no other parts are fi tted which are not individually supported and secured. installation Check clearances from combustibles. Requirements are in section 5. & Check vent system to be sure that it is installed according to the instructions in ... - Page 21 Operating 1. Set thermostat to the lowest setting. instructions and 2. Turn off all electric power to the heater. operating sequence Shut the gas cock at the inlet of the unit. Wait fi ve (5) minutes to clear out any gas. Then smell for gas, including near the fl...
- Page 22 Burner gas pressure The gas pressure is set for the required heat input before the appliance leaves the factory. Provided that the gas supply to the air heater is in accordance with the adjustment supply pressure described on the appliance data plate, the operating pressure will not require adjustment.
- Page 23 Ignition 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 system and the gas valve between heat cycles. Normal The time line below illustrates a normal heat cycle. Heat Cycle Operating Sequence...
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Page 24: Maintenance Schedule
13. Maintenance The material contained in the MAINTENANCE AND SERVICE Section of this & Service manual is designed to aid a qualifi ed service technician in maintaining and servic- ing this equipment. This heater will operate with a minimum of maintenance. To ensure long life and satisfactory performance, a heater that is operated under nor- mal conditions should be inspected and cleaned at the start of each heating season Warning :... -
Page 25: Heat Exchanger Maintenance
Figure 11b - Control panel assy located on a removable bracket Legend: 15) Control relay (ER) 16) Terminal blocks 17) 2 stage burner relay K1.2 (option) (not illustrated) 18) Relay (K1.6) 19) Connector 20) Filter 21) Pressure switch (S3) 22) Electronic burner relay fuse 14. -
Page 26: Burner Maintenance
15. Burner -CORE ® This heater has a unique one-piece burner assembly designed to Maintenance provide controlled fl ame stability without lifting or fl ashback. The burner can be removed as a unit for inspection or service : see below for removal instructions. Inspect the burner/control compartment annually to determine if cleaning is necessary. - Page 27 6. Remove burner Figure 13a a) Locate the burner body front support. Remove the screws that attach it to the secondary air shield. Refer to fi g. 14 for component defi nitions. b) Holding the venturi tube, slide the entire burner slightly to the right to disengage the burner from the supports on the left.
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Page 28: Burner Orifi Ce
Inspect and clean the With the burner assembly removed, shine a fl ashlight on the burner ribbons. Look for carbon buildup, scale, dust, lint, and/or anything that might restrict fl ow through burner the spaces between the burner ribbons. Holding the burner assembly so that any foreign material will fall away from the burner, use a stiff bristle brush to loosen Figure 15 and remove any foreign material(s). -
Page 29: Blower Motor
Figure 16a Ignitor showing required spark gap measurement Figure 16b Flame sensor Caution : Due to high Flame sensor - Refer to fi gure 11a and locate the fl ame sensor. Disconnect the wire, remove the screw and the fl ame sensor. Clean with an emery cloth.. voltage on the spark wire and electrode, do not touch Control relay - See fi... -
Page 30: Venter Motor And Wheel
Remove dirt and grease from the motor casing, the venter housing, and the venter 20. Venter wheel. Venter motor bearings are permanently lubricated. motor & wheel Follow these instructions for replacement of the venter motor and wheel assembly. Keep all hardware removed to be used in reassembling and installing the replacement parts. -
Page 31: Gas Valve
UDSBD models 025-3 - 030-3 (Rotation clockwise from motor shaft end) Figure 19 Venter wheel Venter motor plate Motor mounting bracket Motor cooling fan 8 mm 21. Operating The main operating quick opening gas valve is powered through the thermostat and safety controls. -
Page 32: Limit Controls
23. Limit All units are equipped with temperature activated limit controls. The controls are Controls factory set and non-adjustable. If either setpoint is reached, the corresponding Fan Delay limit control will interrupt the electric power to the gas valve. These safety devices Control provide protection in the case of motor failure or lack of airfl... -
Page 33: Troubleshooting
25. Troubleshooting 1611UDSBD-3GBEN, Pag. 33/36... - Page 34 General Troubleshooting PROBLEM PROBABLE CAUSE REMEDY Venter motor will 1. No power to unit 1. Turn on power, check supply fuses or circuit breaker. not start 2. No power to venter motor 2. Check connections at burner relay and/or venter motor terminals. 3.
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Page 35: Parts List
26. Parts list Description Application UDSBD-3 Partnumber (PN) Control relay 03 25322 Spark ignitor 05 25162 Flame sensor 03 401US 195292 Limit control LC3 03 24959 03 Limit control LC1 03 24959 04 Fan time delay relay KFC 03 25167 Filter 30 61747 Pressure switch... - Page 36 Registered in England N° 1390934. Registered offi ce: 10 Norwich Street, London, EC4A 18D Nortek Global HVAC is a registered trademark of the Nortek Global HVAC Limited. Because of continuous product innovation. Nortek Global HVAC reserves the right to change product specifi cation without due notice.