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Gas fired Balanced flue / Fan assisted
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.
Ambi-Rad Limited, Fens Pool Avenue, Brierley Hill, West Midlands DY5 1QA (United Kingdom)
UDSA 008 - 100
flue unit heater
INSTALLATION
COMMISSIONING
SERVICING
These appliances meet the following EC Directives:
DIR CE 90/396/EEG:GAD
DIR CE 89/336/EEG:EMC
DIR 73/23/EEG:LVD
DIR 89/392/EEG:MD
Tel : 01384 489700
WARNING:
Fax : 01384 489707
0502UDSAAMEN
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Summary of Contents for Ambirad UDSA 008
- Page 1 0502UDSAAMEN UDSA 008 - 100 Gas fired Balanced flue / Fan assisted flue unit heater INSTALLATION COMMISSIONING SERVICING These appliances meet the following EC Directives: DIR CE 90/396/EEG:GAD DIR CE 89/336/EEG:EMC DIR 73/23/EEG:LVD DIR 89/392/EEG:MD 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 ......................7 7. Flueing requirements ....................8 8. Unit heater location ....................12 9. -
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 UDSA 008 through 100 are design certified to the CE EN1020 standard for use in industrial and commercial installations only. All models and sizes are available for use with either natural, propane or butane gas. The type of gas, the input rate and the electrical supply requirement is shown on the heater rating plate. -
Page 5: Dimensions
5. Dimensions & Clearances (horizontal orientation=standard) Figure 1 Top view Rear view (all mod. except 035,043,050) Rear view Front view ( only mod. 035,043,050) Side view Legend: 1. Combustion air inlet 2. Flue connection 3. External gas connection 4. Electrical connections 5. - Page 6 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) Model Z (*) 8 - 30 35 - 100 (*) : Heaters can be base mounted on suitable non combustible supports.
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Page 7: Technical Data
6. Technical data Table 4 : Technical data TYPE S 008 - 030 Type Gas category 2H3+ B 22 C omb. A ir & Flue, type B instal. C 12, C 32, C42, C 52, C 62,C 82 C omb. A ir & Flue, type C instal.. Flue &... -
Page 8: Flueing Requirements
7. Flue Model UDSA heaters may be installed as Type-B and Type-C installations. requirements Flue must be in accordance with BS6230 or BS5440. Local requirements may apply in addition to national requirements. These unit heaters are designed to oper- ate safely and efficiently with either a horizontal or vertical flue system when in- stalled with the specific requirements and instructions. - Page 9 Table 5 : maximum flue system pipe lengths Model UDSA 008,011, 025,030,035,043 055,064,073,085,100 015,020 050, Heater socket & pipe dia flue pipe inlet pipe Max. straight length (with wall/roof flue pipe terminal) inlet pipe Equivalent length of 45° elbow flue pipe 0.75 0.75 0.75...
- Page 10 Figure 3 : Type B appliances : Combustion air and flue pipe sockets all mod., except. 035,043, 050 only mod. 035, 043 & 050 1) Flue pipe outlet collar 2) Combustion air inlet opening It is important to ensure that there is an adequate air supply at all times for both Air supply combustion and heating requirements.
- Page 11 Balanced flue air heaters are designed to be fitted with a combustion air inlet duct Combustion air inlet that obtains outdoor air and a flue pipe that exhausts flue products to outdoors. pipe & flue pipe for Both the flue and combustion air pipes must be sealed. Use gasket sealed seam- balanced flue less aluminium or stainless steel pipe or equivalent.
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Page 12: Unit Heater Location
8. Location heater Use the minimum clearances in section 5 and the throw data in the technical data table of section 6 when determining where to suspend the heater. Remark: Recommended minimum height is 2.5mm. Flue requirements may affect location. Consult WARNING: section 7 before making If touched, the vent pipe and internal heater surfaces that... -
Page 13: Hanging The Unit
9. Hanging Before suspending the heater, check the supporting structure to verify that it has the heater sufficient load-carrying capacity to support the weight of the unit. Leave the unit on the pallet. If the bottom of the unit is not supported or protected damage can occur. - Page 14 When desired the heaters may be supported by wall brackets. Supporting in this Figure 7 : manner allows the heaters to be placed in close proximity to the ceiling or mounted Wall bracket kits (optional) directly to the vertical supporting structures of the building. There are 2 different wall bracket designs for UDSA models as shown in the illustrations below.
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Page 15: Gas Piping And Pressures
10. Gas Piping and Warning : This appliance is equipped for a maximum gas supply pressure pressures of 50 mbar. WARNING : Pressure testing supply piping Test pressures above 50mbar : Disconnect the heater and manual valve from WARNING: All the gas supply line which is to be tested. -
Page 16: Electrical Supply And Connections
11. Electrical The electrical installation may only be carried out by an appropriately qualified person current to IEE Regulations. The supply line to the heater should include a supply and main switch. The minimum clearance distance between the contacts must be connections more than 3 mm. - Page 17 1 metre of the appliance Mains Supply 1 phase 240V 50Hz External Controls (*) When an ATEM 1 Other Controls (*) AMBIRAD control panel is not used. 240V 240V 240V S lave / Master V oltage Connections (I f Required)
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Page 18: Check Installation And Start Up
12. Check Check suspension. Unit must be secure.Verify that no other parts are installation fitted which are not individually supported and secured. & Check clearances from combustibles. Requirements are in section 5. start-up Check vent system to be sure that it is installed according to the instructions in section 7, venting requirements. - Page 19 Set thermostat to the lowest setting. Operating instructions and operating sequence 2. Turn off all electric power to the heater. Shut the gas cock at the inlet of the unit. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor.
- Page 20 Burner gas pressure The gas pressure is set for the required heat input before the appliance leaves the adjustment factory. Provided that the gas supply to the air heater is in accordance with the supply pressure described on the appliance data plate, the operating pressure will not require adjustment.
- Page 21 Figure 10b : HONEYWELL gas valve (type 035 - 100) Legend Gas inlet Gas outlet Inlet pressure tap Outlet pressure tap 6.3mm AMP terminals and screws for wiring 6.3mm AMP terminals Earth terminal/screw (line voltage models only) Pressure regulator adjustment screw Table 8 : Burner jets and pressures Mod.
- Page 22 Ignition Ignition Ignition Ignition Ignition This heater is equipped with a direct spark integrated control relay. The control system system system system system relay monitors the safety devices and controls the operation of the venter motor and the gas valve between heat cycles. Normal Heat Cycle Operating The time line below illustrates a normal heat cycle.
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Page 23: Maintenance Schedule
13. Maintenance The material contained in the MAINTENANCE AND SERVICE Section of this & Service manual is designed to aid a qualified service technician in maintaining and servicing this equipment. This heater will operate with a minimum of maintenance. To ensure long life and satisfactory performance, a heater that is operated under normal con- ditions should be inspected and cleaned at the start of each heating season (inspec- Warning :... -
Page 24: Heat Exchanger Maintenance
Figure 11b - Control panel assy located on a removable bracket Legend: 15) Control relay (ER) 16) Terminal blocks 17) Limit control LC3 18) Polarity check (S14) 19) Connector 20) Pressure switch (S3) 21) 2-stage burner relay (opton) (K1..) 22) Electronic burner relay fuse (3.15F) 14. -
Page 25: Burner Maintenance
15. Burner -CORE ® This heater has a unique one-piece burner assembly designed to pro- Maintenance vide controlled flame stability without lifting or flashback. The burner can be re- moved as a unit for inspection or service : see below for removal instructions. Inspect the burner/control compartment annually to determine if cleaning is neces- sary. - Page 26 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 fig. 14 for component defini- tions. 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 27: Burner Orifice
With the burner assembly removed, shine a flashlight on the burner ribbons. Look Inspect and clean the burner for carbon buildup, scale, dust, lint, and/or anything that might restrict flow through 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 28: Fan Motor
Figure 16a Ignitor showing required spark gap measurement (PN 03_401US_175272) Figure 16b Flame sensor (PN 03_401US_195292) Flame sensor - Refer to figure 11a and locate the flame sensor. Disconnect the Caution : Due to high voltage wire, remove the screw and the flame sensor. Clean with an emery cloth.. on the spark wire and electrode, do not touch when energized. -
Page 29: Venter Motor And Wheel
3. Remove the fan assembly (fan guard, motor and fan blade). Figure 18 - Fan blade position on the motor shaft 4. Disassemble and replace parts as needed, then reassemble. Be sure the fan blade is in the proper position on the shaft; refer to the illustration and table in figure 18. - Page 30 Venter wheel position on UDSA models 008 - 020 shaft (Rotation clockwise from motor shaft end) Figure 19 Venter Motor mounting motor plate bracket Venter wheel Motor (PN 11_43430 01) Motor cooling fan 8 mm UDSA models 025 - 030 (Rotation clockwise from motor shaft end) Figure 20 Venter...
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Page 31: Gas Valve
UDSA models 035 - 100 (Rotation counter clockwise from motor shaft end) Figure 21 Venter motor plate Motor mounting bracket Venter Motor wheel 11_43426_03) Motor cooling fan 8 mm 5/16” (8mm) 21. Operating The main operating quick opening gas valve is powered through the thermostat and safety controls. -
Page 32: Combustion Air Pressure Switch
Combustion The combustion air pressure switch ensures that proper combustion airflow is available. The switch senses the differential pressure between the negative air pressure pressure in the flue gas collector box and the pressure in the control section. switch (For switch location, see figure 11b). On startup when the heater is cold, the sensing pressure is at the most negative level, and as the heater and flue system warm up, the sensing pressure be- DANGER : Safe operation of... -
Page 33: Troubleshooting
Flue and Check the complete system at least once a year. Inspection should include combustion all joints, seams, concentric adapters and the flue terminal cap. Replace air piping any defective or heavily corroded parts. 25. Trouble- The integrated control relay monitors the operation of the heater. If the shooting heater fails to operate properly, review the flow chart below and see the operating sequence in section 16. -
Page 34: Flue And Combustion Air System
General Troubleshooting P ROBLEM P RO BABLE CAUSE REM EDY Venter 1. No power to unit. 1. Turn on power, check supply fuses or circuit breaker. motor will 2. No power to venter motor. 2. Check connections at burner relay and/or venter motor terminals. not start 3. -
Page 35: Parts List
26. Parts list Description Application Partnumber (PN) Control relay UDSA008 … 100 03 25322 Spark ignitor UDSA008 … 100 05 25162 Flame sensor UDSA008 … 100 03 401US 195292 Limit control LC3 UDSA008 … 100 03 24959 Limit control LC1 UDSA008 …...
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