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Roberts Gorden CTCU 11 - page 1
© Cop yright 2006 Rober ts-Gordon, LLC Quality in Any Language™ C mbat ® Installation, Commissioning, Operation & Ser vice Manual Models CTCU 7 CTCU 11 CTCU 15 CTCU 22 CTCU 27 CTCU 32 P / N 11 11 0 0 U K R e v B 1 0 / 0 6 Compact T ubular Unit Heaters W ARNING FOR Y OUR SAFETY If you smell g as: 1 . Open windo ws. 2. DO NO T try to light an ...
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Roberts Gorden CTCU 11 - page 2
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Roberts Gorden CTCU 11 - page 3
© 2006 R ober ts-Gordon, LLC All rights reserved. No par t of this w ork cover ed by the cop yrights herein ma y be r epr oduced or copied in any form or by any means - graphic, electronic , or mechanical, including photocop ying, recor ding, taping or information stor age and retriev al sy stems - without the writt en permission of Rober ts-Gor d ...
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Roberts Gorden CTCU 11 - page 4
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Roberts Gorden CTCU 11 - page 5
TABLE OF FIGURES Figur e 1: Installation Clearances and Clearances to Comb ustib les................... .............. .............. .............. . 4 Fi gure 2: Suspension Methods .................... ................. ............ 7 Figur e 3: Shelf Mounting and Hanging Suspensi on .................. 8 Fi gure 4: V er tical Louvres (Optional) . ...
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Roberts Gorden CTCU 11 - page 6
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Roberts Gorden CTCU 11 - page 7
1 COMB A T ® C ompact T ub ular Unit Heat er s are high ef ficienc y heat er s and ar e list ed on the Enhanced C apital Allo wance Scheme ’E ner gy T echnology P roduct List’ . The ETL symbol is a UK regist ered cer tification mark of The C arbon T r ust. P roduct Appr ov al ROBERTS GORDON ® appliances have been tested and CE certified as co ...
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Roberts Gorden CTCU 11 - page 8
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 2 SECTION 1: HEATER SAFETY Y our Saf ety is Impor tant t o Us! This s ymbol is used thr oughout the manual t o notify y ou of possib le fir e , electrical or burn hazards . Please pa y special at tention when r eading and f ollow ing the warnings in these sections. Install ...
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Roberts Gorden CTCU 11 - page 9
SECTION 3: C RITICAL C ONSIDER ATIONS 3 SECTION 3: CRITICAL CONSI DERATIONS 3.1 Basic Inf or mation CTCU heater s hav e aut omatic ignition b ur ner s f o r ON/OFF operation only . 3.2 Location and Suspension All models: • Must be inst alled indoors . • Must be inst alled in a le v el position w ith horizon- tal or v er tical dischar ge. • Ma ...
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Roberts Gorden CTCU 11 - page 10
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 4 F igur e 1: Installation Clear ances and Clear ances t o Combus tibles W ARNING Fire H a z ard S ome objects will catch fire or explode when placed close to heater . K eep all flammable objects, liquids and vapours the required distance away fr om the heater . Failure to ...
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Roberts Gorden CTCU 11 - page 11
SECTION 4: S PECIF ICATIONS 5 SECTION 4: SPECIFICATIONS 4.1 CTCU A (All Models) Dimension Data - CTCU A (All Models) Model CTCU-7 CTCU-1 1 CTCU-1 5 CTCU-22 CTCU-27 / 32 A Height mm (in) 304 (12.0) 304 (12.0) 450 (17.7) 450 (17.7) 578 (22.8) B Mounting H ole Spacing mm (in) 239 (9.4) 239 (9.4) 385 (15.2) 385 (15.2) 513 (20.2) C Centre of Flue (T op ...
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Roberts Gorden CTCU 11 - page 12
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 6 4.2 Gener al T echnical Data T able (All Models) Electrical load at 230 V 50 Hz measured b y calculating from t otal run curr ent of appliance . * Do not e x ceed the maximum length of flue stat ed or heat er ma y not opera te pr operly . R educe the maximum length stat ...
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Roberts Gorden CTCU 11 - page 13
SECTION 5: H EATER I NSTALLATION 7 SECTION 5: HEATER INSTALLATION 5.1 Gener al Heater s are designed f or installation abo v e 1 .8 m. These heat er s must be inst alled w ithin the heat ed space. D uct deliv ery sy stems ar e not per mit t ed wi th axial f ans. W hen handling or suppor ting the heat er from belo w , ensure that the weight is t ak ...
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Roberts Gorden CTCU 11 - page 14
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 8 F igur e 3: Shelf Mounting and Hanging Suspension Har dwar e pr ovid ed to construct mounting brac k et assemb ly only . F igur e 4: V er tical Lou vr es (Optional) F or models 1 5 and 22, horizontal louvr es ar e r e-used. Shelf Mounting Brack ets (F asten t o W all Mou ...
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Roberts Gorden CTCU 11 - page 15
SECTION 6: F LUE I NSTALLATION 9 SECTION 6: FLUE INSTALLATION 6.1 Changing Flue and A ir Intake Orientatio n The heat er is sold with horizontal f lue and fr esh air connections as standar d. If ver tical f lue and fre sh air connections ar e r equir ed, f ollow the in structions on P age 29, Section 1 5.4 . 6.2 Flue Installation The flue m ust t e ...
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Roberts Gorden CTCU 11 - page 16
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 10 F igur e 6: V er tical and Hor izontal Flue T ermination - T ype B 22 Appliance F igur e 7: V er tical and Hor izontal Flue T ermination - T ype C 12 C 32 & C 62 Appliances W all T erminal Flue Masterf lash Masterf lash Roof T erminal V er tical Option Horizontal Op ...
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Roberts Gorden CTCU 11 - page 17
SECTION 7: A IR S UPPLY 11 SECTION 7: AIR SUPPLY 7 .1 Room Se aled Installation When installed as a r oom sealed heater , the air f or combustion is dra wn in fr om outside the b uilding. It is impor tant t o ensur e that ther e is adequat e v entilation t o pr ovide air f or the distribution f an. 7 .2 Open Flued Installation It is impor tant t o ...
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Roberts Gorden CTCU 11 - page 18
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 12 SECTION 8: GAS PIPING It is impor tant that t he gas supply pipe and th e electrical connections do not suppor t any of the heat er’ s weig ht. A gas met er is connected t o the service pipe by the gas sup ply company . An e xisting met er should be check ed, pref er ...
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Roberts Gorden CTCU 11 - page 19
SECTION 9: W IRI NG AND E LECTR ICAL I NF ORMATION 13 SECTION 9: WIR ING AND ELECTRICAL INF ORMATION 9.1 Electr ical Supply All heater mod els need a constant 230 V 50 Hz 1 Ø supply connected t o t erminals L 1 , N & Ear th. P olar ity "L & N" must be correct. The v oltage bet ween neutr al and ear th should be 0 and ne ver e x c ...
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Roberts Gorden CTCU 11 - page 20
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 14 9.3 CTCU A Wiring Dia gr am Models 7 - 32 GROUND A T LIMIT BLUE WHITE YELLO W BRO WN BLACK BRO WN 11 12 7 9 10 8 5 64 AXIAL F AN COMBUSTION F AN WHITE YELLO W PURPLE PINK GREY 2 3 1 L E N E N L PRESSURE SWITCH RED BLACK BLUE BRO WN BLACK LIMIT THERMOST A T GREEN/YELLO W ...
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Roberts Gorden CTCU 11 - page 21
SECTION 1 0: C OMMISSIONING 15 SECTION 1 0: COMMISSIONING Installation, service, commissioning and ann ual inspection of the heat er m ust be done b y a contract or qualified in the installation and service of gas-f i r ed heating equipmen t. Read this man ual carefully bef ore installation, commissi oning, operation, or service of this equipment. ...
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Roberts Gorden CTCU 11 - page 22
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 16 F igur e 9: A utom atic Burner Contr ol Bo x Sequence F igur e 1 0: Gas V alv e for Hea ter Models 7 - 32 Burner sequence f or Honeywell S4565C Flame Signal Start Gas V alv e Ignition Spark Supply 230 V CL OSE DO WN RU N ST ART ts = 1 0 seconds Signals Output By Contr o ...
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Roberts Gorden CTCU 11 - page 23
SECTION 1 0: C OMMISSIONING 17 1 0.2.2 Commissioning the Gas V alve (All Gases) 1 0.2.2.1 Chec k Burner Gas P ressur e 1 . Loosen the scr e w cov er of the outlet (burner) pr essure t est point and connect a manomet er . 2. With the b ur ner firing, measure th e pressur e on the manomet er . T o adjust the b ur ner pr essur e, remo ve the r egulat ...
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Roberts Gorden CTCU 11 - page 24
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 18 SECTION 1 1: USER INSTRUCTIONS 1 1 .1 User Instructions The CTCU heat er s are fu lly automatic and oper ate from the e xternal controls f it ted on sit e . The only user controls at th e heater a re the: Burner Lock out R eset But t on ................ See P age 1 8, S ...
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Roberts Gorden CTCU 11 - page 25
SECTION 1 1: U SER I NSTRUCTIONS 19 1 1 .4.2 T o T urn the Heater Of f Set the installed r emote contr ols t o the "OFF" position. The b ur ner w ill turn of f immediat ely . The f an w ill continue t o r un f or a f ew minu tes . T o rest ar t, turn the control used abo v e to "ON". 1 1 .5 Simple Fault F inding Some possible r ...
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Roberts Gorden CTCU 11 - page 26
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 20 SECTION 1 2: SERVICING 1 2.1 Servicing Instructions Af ter commissioning , the heat er w ill r equire mainten ance t o be carried out annually . If the heat er is used in a dir t y or dusty are a, more frequent mainten ance ma y be necessar y . Installation C ode and An ...
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Roberts Gorden CTCU 11 - page 27
SECTION 1 3: C ON V ERSION B ETWEEN G ASES 21 SECTION 1 3: CON VERSION BETW E EN GASES 1 3 .1 Gener al Con ver sion bet ween g ases w ill requir e a change of burner injector s and the gas v al v e r e-commissioning to th e new con ditions. 1 3 .2 Bur ner Con version Con ver sion of the b ur ner assemb ly from one g as to the other is the same f or ...
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Roberts Gorden CTCU 11 - page 28
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 22 SECTION 1 4: T ROUB LESHOOTING 1 4 .1 Gener al Replace axial f an. If prob lems persist, contact Roberts-Gordon Ltd. at T el: +44 (0)1 902 498733 www .rg-inc.com Heater Operating TROUBLESHOO T ENDS. No Replace limit thermostat. The limit thermostat has tripped. See Sect ...
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Roberts Gorden CTCU 11 - page 29
SECTION 1 4: T ROUBLESHOOTING 23 1 4 .2 T r oubleshooting F or Aut omatic Ignition Bur ner Sys tems If prob lems persist, contact Roberts-Gordon Ltd. at T el: +44 (0) 1 902 498733 www .rg-inc.com Heater Operating TROUBLESHOO T ENDS. No T race fault in supervision sy stem. See Section 14.3. Ye s Is red loc kout light on? No Is the flame curr ent at ...
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Roberts Gorden CTCU 11 - page 30
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 24 1 4.3 T r oubleshooting f or Flame Supervision S ystem Repair or r eplace as necessary . If prob lems persist, contact Roberts-Gordon Ltd. at www .rg-inc.com Contr ol box f aulty . Replace with correct type. Use Section 1 4.1 to trace the f ault. Heater Operating TROUBL ...
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Roberts Gorden CTCU 11 - page 31
SECTION 1 4: T ROUBLESHOOTING 25 1 4 .4 T r oubleshooting f or Solenoid V alves 1 4 .5 T r oubleshooting f or Main F an V alve f aulty . Replace with one of correct type. F ault elsewher e. If prob lems persist, contact Roberts-Gordon Ltd. at T el: +44 (0) 1 902 498733 www .rg-inc.com V alve Operating TROUBLESHOO T ENDS. No Ye s V alve or ignition ...
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Roberts Gorden CTCU 11 - page 32
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 26 SECTION 1 5: R EMOV AL AND REPLACEMENT P ARTS See warnings and not es on P age 20, Section 1 2 bef or e remo ving or r eplacing par ts. Burner Componen ts All ser viceab le burner par ts are accessed b y the door on the side of the heat er . R emov e the f our sheetmeta ...
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Roberts Gorden CTCU 11 - page 33
SECTION 1 5: R EMOV AL AND R EPLACEMENT P ARTS 27 1 5 .2 Bur ner Compartment 1 5.2.1 Burner Inject ors Remo ve f le xible air duct from spigot. View ing P or t Flame P robe Burner Compartment Cover Ignition Electrode Remo ve scr e ws and pull of f burner cov er . The b urner compar tment is a sealed compar tment. F ollo wing any w ork, re-seal the ...
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Roberts Gorden CTCU 11 - page 34
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 28 1 5 .3 Ignition Electr ode and Flame Pr obe Burners .1 20 (3 mm) spark gap Ignition Electrode Burner Compartment Front Views Limit Thermostat Ignition Electrode Flame P robe Fa n Thermostat Flame P robe Burners Description Part Number Spark Electrode 90427 41 1 Aut omat ...
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Roberts Gorden CTCU 11 - page 35
SECTION 1 5: R EMOV AL AND R EPLACEMENT P ARTS 29 1 5 .4 Flue F a n V ertical Installation IT IS IMPOR T ANT THA T ONL Y THE CORRECT FLUE F AN SPECIFIED FOR EA CH MODEL TYPE IS USED WHEN REPLA CING THESE ITEMS. C arr y out a commission af ter w orking on or changing a flue f an. See P age 1 8, Section 1 1 . MODEL CTCU-7 CTCU-1 1 CTCU-15 CTCU-22 CTC ...
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Roberts Gorden CTCU 11 - page 36
COMBA T ® CTCU U NIT H EATER I NST ALLATION O PERATION AND S ERVICE M ANUAL 30 1 5.5 P ressur e Sw itch P ull of f 3 wa y connect or . Spring open plastic clips of mounting cradle . Replace w ith correct type of pressur e sw itch for model. The pr essure s w itches are colo ur coded f o r each pr essur e set ting. C arr y out a commission af ter w ...
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Roberts Gorden CTCU 11 - page 37
SECTION 1 5: R EMOV AL AND R EPLACEMENT P ARTS 31 1 5 .6 Ignition Contr ol The contr ol plugs ont o the g as val v e. P ull out 1 2 pin electrical connection. P ull out ignition cab l e and flame p robe ca ble noting th eir positions R elease scre w secur ing contr ol t o gas v alv e. R efit in r e v ers e. Ensur e corr ect location of ignition and ...
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Roberts Gorden CTCU 11 - page 38
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Roberts Gorden CTCU 11 - page 39
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Roberts Gorden CTCU 11 - page 40
www.rg-inc.com Printed in U.S.A. At tach this inf ormation t o the wall near the R OBER TS GORDON ® heater Installation Code and Annual Inspections: All installations and service of ROBERTS GORDON ® products must be performed by a contractor qualified in the installation and service of products sold and supplied by Roberts-Gordon and conform to a ...
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