COMBAT FRSA User, Installation And Service Manual Download Page 1

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Room Sealed Unit Heaters

Installation, Commissioning,

Service & User Instructions

Models

FRSA, FRSB,

FRSC & FRSD

75 - 210

August 2000

Part No. X224B

Summary of Contents for FRSA

Page 1: ...RoomSealedUnitHeaters Installation Commissioning Service User Instructions Models FRSA FRSB FRSC FRSD 75 210 August 2000 Part No X224B...

Page 2: ......

Page 3: ...ntries are available on request These appliances are Cat II 2 H 3 appliances for use with natural gas G20 or L P G G31 G30 as stated on the heater data plate and are intended for indoor installation o...

Page 4: ...n between Natural gas and L P G 11 Parts List 12 Commissioning Data Sheet THIS AIR HEATER IS FOR USE WITH NATURAL GAS OR L P G AS STATED ON THE HEATER DATA PLATE THESE INSTRUCTIONS ARE TO BE LEFT WITH...

Page 5: ...ge of heaters are fitted with Direct Drive centrifugal fan blowers to allow them to be fitted to duct distribution systems when supplied with the factory fitted outlet spigot The FRSC range of heaters...

Page 6: ...Rear Lockout Reset Button Lighting Instructions Warning Lights GREEN Burner On RED Lockout Data Plate Dimension Data see Figs 1 2 to 1 4 Dimension Diagrams Model A Width B Width between hanging points...

Page 7: ...r outlet spigot as standard All inlet and outlet duct spigots are complete with 25mm mez flange 140 510 Centres 751 680 1431 674 x G Width 234 FRSD 495 x G Width 234 495 x G Width 234 751 1051 150 150...

Page 8: ...1 G M P n a f i S 1 0 1 1 4 0 5 3 1 G M P n a f i S 1 0 1 1 4 0 9 3 1 G M P n a f i S 1 0 1 1 4 0 9 3 1 G M P n a f i S 1 0 1 1 4 0 2 4 1 G M P n a f i S 1 0 1 1 4 0 2 4 1 G M P n a f i S 1 0 1 1 4 0...

Page 9: ...3 2 7 7 5 0 1 5 7 3 0 5 9 7 2 1 0 0 4 4 8 2 1 0 5 1 5 9 4 4 9 8 8 6 1 5 4 5 4 5 9 5 8 1 5 1 6 8 3 8 9 0 2 6 7 2 1 3 9 5 2 V C T E N T U P N I T A E H W k r h u t B 6 4 3 2 7 4 0 0 8 2 5 8 2 2 1 3 7 9...

Page 10: ...a dual function control and safety device see Fig 2 4 There are two fitted to FRSD ducted heaters the extra one being fitted at the rear inlet spigot Fan Thermostat The fan thermostat controls the ope...

Page 11: ...LED UNIT HEATERS Fig 2 4 Combination Fan Limit Thermostat WARNING IT IS ESSENTIAL THAT THE BREAK OFF LINK SHOWN IS REMOVED IN THE EVENT OF THERMOSTAT REPLACEMENT Fig 2 5 Satronic DMG 970 MOD 03 Contro...

Page 12: ...e As these appliances are designed for direct main flame ignition the main gas valve opens and once a flame has been established this remains on until close down The flame probe is now continuously mo...

Page 13: ...ion 2 Data Tables All heaters may be mounted on a NON combustible shelf Drop rods should be a minimum of 12 mm diameter mild steel The four hanging brackets are located on top of the heater for all mo...

Page 14: ...mbar for Butane 3 4 Flue and Combustion Air Intake Each heater must be fitted with airtight sealed flue and combustion air intake pipes of the correct size to fit into the provided spigots and as supp...

Page 15: ...of the heater as shown in Section 5 The final connection to the heater should be in metal sleeved flexible cable or flexible conduit to the terminal block Cable size should be 1 sq mm Reusable cable...

Page 16: ...e supplied with three speed direct drive centrifugal fans which have been connected to operate with the heater free blowing into the heated space Each of the fans has built in thermal overload protect...

Page 17: ...e fan thermostat to turn it on Any such device must be in parallel with the fan thermostat so that the fan run on operation will still take place FRSD models have two combination thermostats with the...

Page 18: ...pe Flue Pipe Fig 3 1 Typical Heater Installation for FRSA FRSB FRSC FRSD All clearances and distances in metres for the installation Detail of Flue Components The maximum length of flue and air intake...

Page 19: ...ance earthing must be tested using a suitable method according to local regulations The resistance of the earth circuit from the heater to the earth connection must be 0 1 ohm or less 4 1 1 3 Connect...

Page 20: ...bject to site conditions see Fig 2 4 HAND 1 FAN OFF SET TO 38 C HAND 2 FAN ON SET TO 57 C HAND 3 LIMIT SET TO 80 C Always refit the cover and tighten the cover screw after adjustments 4 4 Carry out a...

Page 21: ...gas outlet of valve blanked off 230v electrical connection valve 2 Gas outlet to burner Fig 4 1 Controls Layout Fans Connections Mains Filter for Controls Only Main Connection Box Burner Control Box A...

Page 22: ...r at least 15 minutes turn the burner off and on and then re check settings Remove manometer and refit all covers to the valve Set Burner Pressure L P G For all L P G applications the pressure regulat...

Page 23: ...itch room thermostat and manual switch to ensure that they function correctly Set the time switch and room thermostat to the user s requirements 4 8 Handing Over When the commission is complete explai...

Page 24: ...Page 22 ROOM SEALED UNIT HEATERS Fig 5 1 Wiring of FRSA Axial Fan Unit Heaters Section 5 Wiring Diagrams...

Page 25: ...Page 23 ROOM SEALED UNIT HEATERS Fig 5 2 Wiring Diagram for FRSB and FRSC Centrifugal Fan Unit Heaters Models 75 to 135...

Page 26: ...Page 24 ROOM SEALED UNIT HEATERS Fig 5 3 Wiring Diagram for FRSB and FRSC Centrifugal Fan Unit Heaters Models 150 to 210...

Page 27: ...Page 25 ROOM SEALED UNIT HEATERS Fig 5 4 Wiring Diagram for FRSD Ducted Unit Heaters With No Built In Fan...

Page 28: ...Page 26 ROOM SEALED UNIT HEATERS Fig 5 5 Individual Controls for All FRS Range Heaters Fig 5 6 Methods of Connecting Remote Fan Motor for FRSD...

Page 29: ...he injectors or venturi of the burner see 7 4 3 Check condition of ignition electrode and flame probe for erosion and damage to the ceramic insulation see 7 3 Replace as necessary 6 2 Fan Motor Assemb...

Page 30: ...evices To change gas control valves see Section 7 2 6 5 Flue Fan The flue fan should be inspected to ensure that the fan impeller is in good condition and that no debris has entered the flue system If...

Page 31: ...the gas valve Unplug the flame probe lead from the Flame probe and the HT lead from the spark igniter 7 1 3 Unscrew the set screws securing the burner tray Fig 7 1 and pull out the tray from the side...

Page 32: ...r to the cross lighting brackets This electrode is designed to give a spark gap of 4 to 6mm between the electrode tip and the centre flame ports of the burner 7 3 1 2 To remove pull off the H T Rajah...

Page 33: ...Injectors Flame Probe Ignition Electrode Spark gap 4 to 6mm to Centre Burner Ports Rear Baffle Manifold Viewing Window Flame Probe Plug for Second Valve Ignition Electrode Burner Drawer Fixing Screws...

Page 34: ...ch refitting of the injectors 7 4 5 Re fit Burner Bars When refitting the burner bars start by fitting the No 1 burner without cross lighting bracket and ensure that the burner is pushed fully home ag...

Page 35: ...the weight of the fan approx 19 kg and making a careful note of the fan orientation For the FRSC version fitted with an inlet spigot assembly the fan s may be accessed through the removable covers on...

Page 36: ...nder a screw connection 7 7 3 Unscrew two fixing screws and withdraw the unit from the cabinet feeding the cables through the grommeted hole in the thermostat base 7 7 4 To refit reverse the above pro...

Page 37: ...s noting there position Remove the two corner fixings of the pressure switch 7 9 1 Replacement To replace reverse the above ensuring that one of the correct calibration is used as specified in the dat...

Page 38: ...ed Lockout warning light ON Test Burner as in 8 1 Does the Fan run Press in White button on combination thermostat Fan runs now Use 8 4 to test fan See Section 4 3 to check Fan Stat Settings Replace C...

Page 39: ...fan run Does Lockout occur before the burner fan has run for 10 seconds Use 8 2 to check flame monitoring Does Lockout occur after the burner has run for 10 seconds but before the burner fires Check...

Page 40: ...eries with the flame probe using the jack plug provided Turn on all controls and ensure that there is a supply to the burner Green light ON Is there a current flowing in the flame probe circuit with n...

Page 41: ...communicates with the outside world using a LED the used Flash Code is similar to the Morse Code The messages are optically transmitted by an appopriately flashing LED Using an additional terminal opt...

Page 42: ...s and controls including limit thermostats Pressure should rise on outlet when valve energises Test gas pressure at inlet of valve Fault elsewhere Solenoid valve faulty Replace as necessary Test gas p...

Page 43: ...e heater under all possible duct conditions When the environmental working temperature as set on the remote thermostat is achieved the burner shuts off The main fan runs until all the heat has been ex...

Page 44: ...d to fail safe and give further protection against fan failure To reset this thermostat unscrew the plastic cover and press in the central reset button Note the heat exchanger must have cooled for res...

Page 45: ...turned ON 3 The installed time and or temperature controls are not ON 4 Green light will not come on check 2 3 above or One or both of the limit thermostats may have operated This may be caused by in...

Page 46: ...ments of this manual For service contact your Heating Supplier The heater cabinet may be cleaned using a damp cloth with a little domestic detergent Do not use excessive water or abrasive materials EM...

Page 47: ...e ones for the new gas following the instructions in Section 7 10 3 Gas Valves All of the MKII FRS range heaters are fitted with S I T Nova main valves which may be converted to operate with or withou...

Page 48: ...1 Exclusion screw for Nova valves All Types for L P G L 425 Main burner injectors natural gas B 109 Main burner injectors L P G gas B 101 Sealing washers for main burner injectors B 210 Honeywell comb...

Page 49: ...ERATURE C GROSS STACK TEMPERATURE C NET STACK TEMPERATURE C CARBON DIOXIDE IN FLUE CO2 CARBON MONOXIDE IN FLUE CO P P M ESTIMATED EFFICIENCY State net or gross COMMENTS HEATER LOCATION MODEL SERIAL NU...

Page 50: ...Page 48 ROOM SEALED UNIT HEATERS...

Page 51: ...Page 49 ROOM SEALED UNIT HEATERS...

Page 52: ...01464 SPARES Tel 01902 499051 Fax 01902 492411 MAIN SWITCHBOARD Tel 01902 494425 Fax 01902 403200 Roberts Gordon Oxford Street Bilston West Midlands WV14 7EG Tel 01902 494425 Fax 01902 403200 e mail e...

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