Roberts Gorden UHA[X][S] 75 manual

Installation, Operation & Ser vice Manual Models UHA[X][S] 30, 45, 60 , 75, 100, 125 P / N 1111 0 0 N A 11 / 0 8 R e v D UHA-Series T ubular Unit Heaters (Low Profile Range) W ARNING Installation must be done b y a contract or qualified in the installation and service of gas-fir ed heating equipment or your gas supplier . Improper installation,[...]

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© 200 8 Ro b er ts-Gor don LLC All rights r eser v ed. N o par t of this w ork co v er ed b y the copyrights herein may b e r eprod u ced or copied in any f orm or b y any means - graphic , electronic , or mechanical, incl u ding photocop y ing, r ecording , taping or inf or mation st orage and retrie v al s yst ems - w itho u t the w ritt en perm[...]

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TABLE OF FIGURES Fi gure 1: UHA 30 - 45 L abel Placem ent .................. ........... ...... 2 Fi gure 2: UHA 60 - 75 L abel Placem ent .................. ........... ...... 3 Fi gure 3: UHA 1 00 - 1 25 Labe l Placement............... ................. 4 F igur e 4: Inst allatio n Clearan ces and Clearanc es to C omb ustib les ................. [...]

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SECTION 1: H EATER S AFETY 1 SECTION 1: HEATER SAFETY Y our S af ety is Impor tant t o Us! This s ymbol is used thr oughout the manua l t o notify y ou of possib le f ir e, el ectrical or b urn hazar ds. Please p ay special at tention when r eading and f ollo w ing the warnings in these sections . Inst allation, ser vice a nd annu al inspecti on of[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 2 Fig ure 1: UHA 30 - 45 Label Placement Description Part Number Logo Label 91 040030 Cut Hazard Label 91 0 1 0430 V ent Length Label 91 039505 V ent to Outdoors Label 91 0 1 0427 Warning Label 91 0 1 0429 Rating Plat e Label 91 0 1 0420 Installation Label 91 0 1 04[...]

SECTION 1: H EATER S AFETY 3 F igure 2: UHA 60 - 75 Label Placement Description Part Number Logo Label 91 040030 Cut Hazard Label 91 0 1 0430 V ent Length Label 91 039505 V ent to Outdoors Label 91 0 1 0427 Warning Label 91 0 1 0429 Rating Plat e Label 91 0 1 0420 Installation Label 91 0 1 0431 Instruction Loc ation Label 91 0 1 0433 Lighting Instr[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 4 Fig ure 3 : UHA 1 0 0 - 1 25 L abel Placement VENT TO OUTDOORS DONNER VENT A DEHORS © 2006 Roberts-Gordon, LLC P/N 91010427 Printed in U.S.A. / Imprimé aux Etats Unis Description P art N umber Logo Label 91 040030 Cut Hazard Label 91 0 1 0430 V ent Length Label [...]

SECTION 1: H EATER S AFETY 5 SECTION 2: INSTALLER RESPONSIBILITY The insta ller is r esponsib le f or the f ollo w ing: • T o install th e heater , as well as the g as and electrical supplies , in accor dance with applicab le specif ications and codes . Rob er ts-Gor don r ecommends the instal ler contact a Local Building Inspect or or Fi re Mars[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 6 SECTION 3: CRI TICAL CONSIDER ATIONS 3.1 Basic Infor mation UHA[X][S] heat er s hav e aut omatic ignition b urners f or ON/OFF operation o nl y . 3.2 Manufact ur ed Units Gas-fi red, po wer -v ented uni t heater with tub ular heat ex changer . Units sha ll ha ve a[...]

SECTION 3: C RITICAL C ONS IDERATION S 7 3.7 Gas Supply It i s impor tant that the gas s upply pipe i s sized corr ectly t o pr o vide the inlet pr essur e as st at ed on the heat er da ta plat e. The g as supply pi pe and electrical co nnections m ust not support any o f the heater' s wei ght. See P age 22, Section 8 3.8 Electr ical Supply A [...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 8 SECTION 4: NATIONAL STANDA R DS AND APPLICABLE CODES 4.1 Gas Codes The t ype of g as appearing on the name plat e must be t he type of ga s used. Install ation must comply with nat ional and local codes and requi rements of the l ocal gas company . Unit ed Stat es[...]

SECTION 4: N ATI ONAL S TANDARDS AND A PPLICABLE C ODES 9 4.6 High Alt itude These heat er s ar e CS A -appr o ved (wi thout modif ications) f or install ations up t o 2000' (6 1 0 m) in US and C anada. CS A appr ov ed heater s inst alled abo v e 2000' ( 61 0 m) must b e de- rat ed. For inst allations abov e 2000' (61 0 m) in US , co[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 10 SECTION 5: MAJOR COMPONENTS 5.1 General Heater s ar e designed f or instal lation abo v e 6' (1 .8 m). These heater s must be i nstall ed w ithin the heated spac e. Du ct deliv ery sy stems ar e not per mit ted w ith axial fan uni ts. W hen handling or suppo[...]

SECTION 5: M AJOR C OMPONENTS 11 F igure 5: Suspension Methods F igure 6: Shelf-Mounti ng Methods Cone P oint Set Pin W indo w Clamp Unistr u t 3/ 8 " Threaded Rod Nu t W asher Ri v Nu t S u ppor t P oints Ens u re all s u spension hard w are is t or qu ed t o a minim u m of 20 f t l b s. W asher 3/ 8 " Threaded Rod Nu t Unistr u t Channe[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 12 Fig ure 7: W all Shelf Mounting and Hanging Suspension Description Part Number Qty . Wall Shelf Mountin g Br ack et Kit 120 1 1 0 02K Wall Suspension Mounting Bracket Kit 120 1 1 00 1K 1 Shelf Mount ing Brac ket Kit 1 20 1 1 000K 1 Description P art Number Qty . [...]

SECTION 5: M AJOR C OMPONENTS 13 F igure 8: V ertical Lou v ers ( Optional) Push in louver and compress spring to remove (opposite end first) Install vertical louvers brackets (top and bottom) with supplied screws. Install vertical louvers and springs into brackets with springs at top. Remove horizontal louvers. Description Part Number Qty . V erti[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 14 SECTION 6: V ENTING 6.1 Changing V ent and Air In tak e Orienta tion The heater is sold with r ear horiz ontal v ent and air intak e connecti ons as standar d (only separat ed combusti on models ha v e air intak e connect ion). If vertical v ent and air int ak e [...]

SECTION 6: V ENTING 15 V ents and air i ntak es m ust be adequat ely supported so t hat the heat er does not bear the w eight of the pipes. F or v ent t ermination See P age 1 7 , F igur e 9 through P age 20, F igur e 1 4 . 6.3.1 Standar d V ented Heater s (Models UHA[X] 30 - 1 25) The v ent must be f it t ed wi th a low r esistan ce te r m i na l [...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 16 • In the e v ent that the r equir ements of this subdivision c an not be met at the ti me of completion of i nstallati on, the owner shal l hav e a period of thir ty ( 30) da ys t o comply with t he abov e requir ements; pr o vided, ho we v er , that during sai[...]

SECTION 6: V ENTING 17 are loc ated and othe r spaces of the bu ilding . T ur n on clothes dryer s and any e xhaust f ans, such as range hoods and bathr oom e xhausts so that the y shall operat e at maximum speed. Do not oper at e a summer e xhaust f an. Close fir eplace dampers . 4. Fo llow the lighting ins tructions. Plac e the appliance bei ng i[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 18 Fig ure 1 1: Standar d V ented Heat er - Common V ert i cal V ent T ermin ation[...]

SECTION 6: V ENTING 19 F igure 12: Separat ed Combust ion Heater - V er tical and Hori zontal V ent T erminati on F igure 1 3: Concentr ic V ent Box V ent T ermination Listed Thim b le thro u gh Com bu sti b le W all 4" (1 0 cm) Diameter V ent 1 2" (31 cm) Minim u m fr om w all to v ent termination. 4" (1 0 cm) Diameter Air Intak e 1[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 20 Fig ure 1 4: Concentric V ertical and Horizontal V ent T erm ination - Separ ated Comb ustion Heater 6" (1 6 cm) Diameter Single W all 4" (1 0 cm) Diameter Air Int ake Concentric V ent Box V ertical Option 10 ' (3 m) Maxim u m Horizontal Option Con[...]

SECTION 7: A IR S UPPLY 21 SECTION 7: AIR SUPPLY 7 .1 Separat ed Combus tion Installati on W hen installed as a separated comb ustion heater (UHA[X]S), the air f or comb ustion is dr a wn in fr om outside the b uilding . It is important t o ensur e th at ther e is adequate space ar ound heat er t o pro vide air f or the axial air distribut ion f an[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 22 SECTION 8: GAS PIPING A ga s meter is connect ed t o the service pipe by the ga s supply company . An e xisting meter should be chec ked, pr ef erably b y the compan y , to ensure that the met er i s adequat e f or the rat e of g as sup ply r equired. Inst allati[...]

SECTION 9: W IRIN G 23 SECTION 9: W IRING All heat er models r equire consta nt 1 20 V/1Ø/ 60 Hz pow er supply . Check heat er rati ng plat e fo r electrical rati ng f or pr oper circui t sizing . F or ser vicing , a disconnect sw itch of pr oper elect rical rating should be insta lled in the vicinity of the heater . All heat ers ar e equipped w i[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 24 9.3 Lo w V olta ge Thermostat wit h Multiple Heat er s 30 - 45 Model Rela y T ype Rela y Part Number Max. Number o f Heater s UHA[X][S] 30 - 45 SPST 90417 600 4[...]

SECTION 9: W IRIN G 25 9.4 Low V oltage Thermost at w ith Multip le Heat ers 60 - 1 25 Model Rela y T ype Relay P art Number Max. Number of Heaters UHA[X][S] 60 - 1 25 DP S T 90436300 4[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 26 9.5 Inter nal Wi ring Diagr am Bl u e Black Black O r a n ge Y ellow B r ow n Black White White L2 L1 Black Black G r ee n White White G r ee n G r ee n Bl u e Black Black Black White G r ee n Bl u e G r ee n 24 VAC HOT GROUND Flame Black Black Black 6 3 4 5 2 1 [...]

SECTION 9: W IRIN G 27 9.6 Ladder W iri ng Diagr am FLAME SENSOR PRESSURE SWITCH THERMOST A T CONNECTION 6 3 4 5 2 1 1 20 V AC TRANSFORMER FLUE BL O WER AXIAL F AN AXIAL F AN UHA (300, 350, 400 O n ly) GAS VA LV E ELECTRODE IGNITION MODULE Flame S pa r k Limit S witch Limit S witch (UHA 300, 350, 40 0 O n ly) Ma nu al Reset Limit S witch (UHA 30 - [...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 28 9.7 Electr ical Connecti on to the Heat er IMPORT ANT : Junc tion bo x is not pro vided w ith heat er . Conduit can al so be at tach ed directly t o heat er wit h wir e juncti on made withi n the heate r cabinet. BX Connect or Junction Bo x Flexib le Conduit Burn[...]

SECTION 1 0: O PERATION AND M AINTENANCE 29 SECTION 1 0: OPERATION AND MAI NTENANCE R ead this man ual car efully bef ore i nstallati on, operat ion, or ser vice of thi s equipment. All components are accessed via the door secured b y f our sheet metal scr ews . Opening the door e xposes liv e electrical connec tions and hot components. 1 0.1 Pr e-[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 30 Fig ure 1 6: A utomatic Bur ner Contr ol Sequence Fig ure 1 7: Gas V alve f or Model s UHA[X][S] 30 - 45 B u rner Se qu ence for Ignition Contr ol Flame Signal Start Gas V al v e Ignition Spark Thermostat 24 V SHUT DO WN RU N ST ART ts = 1 0 Seconds Signals O u t[...]

SECTION 1 0: O PERATION AND M AINTENANCE 31 F igure 1 8: Gas V alve for Models UHA[X][S] 60 - 1 25 1 0.2.2 Start-Up the Gas V alve ( All Gases) 1 0.2.2.1 Chec k Burner Gas P ressur e 1 . Re mov e the pl ug in the outl et (b ur n er) pr essure test point a nd connect a pressur e t ap and a man omet er . 2. With t he burner firing , measure the press[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 32 Heat e x changer could be dama ged. W arr anty w ill not co v er damage t o the he at ex changer if operat ed impr operly . Only use the disconnect sw itc h for t urning of f heater f or service or during of f-season. 1 0 .2.5 E xternal Cont r ols External contr [...]

SECTION 1 1: U SER I NSTRUCTIONS 33 SECTION 1 1: USER INSTRUCTIONS 1 1 .1 User Instr uctions The UHA[X][S] Series heat ers ar e fully aut omati c and oper ate fr om the e xt ernal contr ols fi t t ed on sit e . The only user contr ol at the heat er is the Manual R eset Limit S w itch - See P age 33, Section 1 1 .3.1 1 1 .2 Heat er Operatio n W hen [...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 34 2. The aut omatic f iring sequence w ill be gin as described on P age 30, F igure 16 . The heat er w ill no w operat e aut omatically under the contr ol of the o n sit e contr ols . 1 1 .4.2 T o T ur n the Heater Of f Set the thermostat to the "OFF" pos[...]

SECTION 1 2: S ERVICING 35 SECTION 1 2: SERVIC ING 1 2.1 Ser vici ng Instructio ns Af t er st ar t-up , the heat er will r equir e maintenanc e to be carried out annual ly . If the heat er is used in a dir ty or dusty area, mor e fr equent maint enance may be req uir ed. IMPORT ANT : Af t er any maint enance or repair w ork, al wa ys test fir e the[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 36 1 2.7 V enting and Ai r Intak e Pipe Inspect all v enti ng and air intak e pipe . Ensur e that all seams ar e sealed and suspension point s secur e. Rep air suspension points i f any part of the v enting or combust ion air pipe is sagging . Check t o mak e sure a[...]

SECTION 1 2: S ERVICING 37 Combust ion Air Intake Pip e Intak e pipe and inlet must be i ntact. Look f or obstructions , cra cks on the pi pe, gaps in the se aled ar eas o r corr osion. The area mus t be fre e of dir t and dust. Clean and rei nstal l as requir ed. Hea t Exchang er M a ke s ure there ar e no crac ks . Mak e sure ther e is no sagging[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 38 SECTION 1 3: T R OUBLESHOOTING 1 3.1 Gener al Ens u re pr oper air flo w clearance f or axial fan. Open lo uv er s slightly . Replace axial f an if it does not operate . If pro b lems persist, cont act Ro b er ts-Gordon LLC at www .rg-inc.com Heater Operating TRO[...]

SECTION 1 3: T ROUBLE SHOOTING 39 1 3.2 T rou bleshootin g F or A utomatic Igni tion Burner Sy stems F or optimu m heater perf or mance , use only repl acement par ts sold and supplied b y Roberts-Gord on. Conduct start-up pr ocedur e as shown on Pag e 29, Section 1 0 .[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 40 1 3.3 T r oubleshooti ng for Fla me Super visi on Sy ste m NO TE: Minimum fl ame probe curr ent 1 μA DC . T ypical f lame pr obe current 3- 5 μA DC. Repair or r eplace as re qu ired. If pro b lems persist, cont act Ro b er ts-Gordon LLC at www .rg-inc.com Repla[...]

SECTION 1 3: T ROUBLE SHOOTING 41 1 3.4 T r oubleshootin g fo r Gas V alv es 1 3.5 T r oubleshootin g fo r Flue Blo w er V al v e f a u lty . Replace w ith one of correct type. Fa u lt else w her e. Corr ect press u re pr o b lem. If pro b lems persist, cont act Ro b er ts-Gordon LLC at www .rg-inc.com V al v e Operating TROUBLESHOO T ENDS. N o Ye [...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 42 SECTION 1 4: R EPLACEMENT P ARTS See w ar nings and no tes on P age 35, Section 1 2 bef or e re moving o r repl acing parts. Burner Component s All serviceable burner par ts are acc essed b y the door on the side of the heat er . Remo v e the sheetmetal scre ws. [...]

SECTION 1 4: R EPLACEMENT P AR TS 43 1 4.2 Burner Compartment 14 . 2 . 1 Burner Inject ors Remo v e f lexi b le air d u ct from spigot V ie w ing por t f or flame pr o b e Flame P r o b e B u rner Compartment Co v er Ignition Electrode Rem o v e scr e w s and p u ll of f bu r ner co v er NO TE: Separat ed com bu stion model sho w n. The burn er com[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 44 1 4.3 Ignit ion Electr ode and Flame Pr obe Inshot B u rners .1 20 (3 mm) spark gap Ignition Electrode Burner Compartment Front Views Man u al R eset Limit S w itch (P osition ma y v ary .) Ignition Electrode Flame Pr o b e Limit S w itch Flame Pr o b e Inshot Bu[...]

SECTION 1 4: R EPLACEMENT P AR TS 45 1 4.4 Heat Exc hanger The heat e x changer consists of a f our -pass design w ith 1 .5" oute r diameter [aluminize d steel ][409 stainl ess st eel] tube . The tube plat es are made of [al uminized st eel][ 409 stainless st eel] . The tube suppor ts ar e made of [ga lv annealed steel] [409 st ainless st eel][...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 46 1 4.6 Flue Blo wer V ertical Installati on IT IS IMPORT A NT THA T ONL Y TH E CORRECT FLUE BL OWER SPECIFIED FOR EA CH MODEL TYPE IS USED WHEN RE PLA CING THESE ITEMS. C arr y out a st ar t-up af t er working on or changing an fl ue blo wer . See P age 33, Sectio[...]

SECTION 1 4: R EPLACEMENT P AR TS 47 1 4.7 Pr essure S w itch P ull of f 3 w a y connect or . Spring open plastic c lips of mounting cradle . R eplace w ith corr ect t ype of pr essur e s w itch f or model. The pr essur e s w itches ar e color coded fo r each pr essure set ting . C arr y out a start-up af ter w orking on or changi ng a pr essur e s[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 48 1 4.9.1 F an R emo val and Repl acement 1 4.9.2 T o Replace the F an A ssembly T o repla ce the f an assembly , re ver se the proced ure shown abo v e. • Chec k that the f an b lades ar e fr ee t o rot at e bef or e turning on the po wer t o the f an. • Stric[...]

SECTION 1 5: S PECIF ICATIONS 49 SECTION 1 5: SPECIFICATIO NS 1 5.1 Dimension Data MODEL UHA[X][S] 30 UHA[X][S] 45 UHA[X][S] 60 UHA[X][S] 75 UHA[X][S] 10 0 UHA[X][S] 12 5 'A' Height in (cm) 12 (30.48) 12 (30.48) 17 . 75 (45.09) 17 . 7 5 (45.09) 23 (58.42) 23 (58.42) 'C' Center o f Flue [T op Option] in (cm) 5.2 (1 3.21) 5.2 (1 3[...]

UHA L OW P ROF IL E U NI T H EAT ER I NSTALL ATION O PERATION AND S ERVICE M AN UAL 50 1 5.2 Gener al T echnical Data T able (All Models) *Do not e x ceed the maxim um length of f lue st ated o r heate r may not oper ate pr operly . 1 5.3 T echnical Data T able (Al l Models) Model UHA[X][S] 30 UHA[X][S]4 5 UHA[X][S] 60 UHA[X][S] 75 UHA[X][S] 10 0 U[...]

SECTION 1 6: ROBER TS GORDON ® COMBA T ® UHA-S ERIES W ARRANTY 51 SECTION 1 6: ROBER TS GORDON ® CO MB A T ® UHA -SERIES W ARRANTY ROBER TS GORDON ® WILL P A Y FOR: Within 24 mont hs from date of purchase by b uyer or 27 months from the da t e of shi pment by R ober ts -Gordon (whichever comes first), replacement p ar ts will be pro vided f re[...]

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® O WNER W ARRANTY RE GISTR A TION C ARD Abou t t he Owner: Name:__________________________________________________________________________________________________ Add r ess:______________________________________City:_________________________ S tate:__________Zip Code:________ Pho n e:_________________________ Fax:_________________________ E-mail:[...]

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10 ' (3 m) W ARNING © 2007 Roberts-Gordon, LLC www.rg-inc.com Printed in U .S.A. P/N 91040031 R ev B At tach this infor mation to the w all near the ROBER TS GORDON ® heater Read the Installation, Operation and Service Manual thoroughly before installation, operation or service . OPERA TING INSTR UCTIONS 1 . ST OP! Read all saf ety instructi[...]