Roberts Gorden UHD[X][S][R] 75 manual

Installation, Operation & Ser vice Manual Models UH D[X][S][R] 75, 100 , 125 P/N 1 1 3000NA 1 1/ 08 Ori g . UHD-Series T ubular Duct Furnace (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, adjustment, [...]

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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 ered b y the cop yrights 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 ying , recor ding, t aping or information stor age and retrie v al sy stems - w itho u t the w ritt en permiss[...]

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TABLE OF FIGURES Fi gure 1: Clearan ces t o Com bustib les ............... ................. ...... 3 Fi gure 2: A ir Flow Dir ection ..................... ................. ................. 7 Fi gure 3: Suspens ion Methods ..................... ................ ............ 8 Fi gure 4: Shelf-Mo unting Me thods .......... ................. ......[...]

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SECTION 1: H EATER S AFETY 1 SECTION 1: HEATER SAFETY Y our Saf ety is Important t o Us! This s ymbol is used thr oughout the manua l to notify y ou of possib le f ir e, elect rical or b urn hazar ds. Please p ay special at tention when r eading and f ollo wi ng the warnings in these sections . Inst allation, service and quar t erl y inspecti on of[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 2 SECTION 2: INSTALLER R ESPONSIBILITY The inst aller is res ponsible f or the fol low ing: • T o instal l the heat er , as w ell as t he gas and electrical suppli es, in acco rdance w ith appli cable specif ications and codes . R ober ts-Gor don recommends the in[...]

SECTION 3: C RITICAL C ONS IDERATION S 3 SECTION 3: CRITICAL CONSI DERATIONS 3.1 Basic Inf ormation UHD[X][S][ R] heater s hav e automatic igni tion burner s f or ON/OFF operation only . 3.2 Manufact ured Units Gas-f ired, powe r -v ente d duct fur nace with tubul ar heat e x changer . Units shal l ha ve a minimum of 82% thermal ef fi ciency . The [...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 4 3.6 V entilation It is impor t ant to ensur e that there is adequat e air space ar ound the heater t o supply air f or comb ustion, v entilation and di stribut ion in accor dance wi th local an d national c odes. See P age 1 0, Section 6 . 3.7 Gas Supply It is imp[...]

SECTION 4: N ATI ONAL S TANDARDS AND A PPLICABLE C ODES 5 SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES 4.1 Gas Codes The type of g as appearing on the name plat e must be the type of gas used. Inst allation mus t comply with nat ional and local codes and requi rements of the l ocal gas compan y . Unit ed Stat es: R ef er t o NFP A 54/ ANSI Z2[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 6 4.6 High Al tit ude These heat ers ar e CS A -appr ov ed (w ithout modifi cations) f or instal lations up t o 2000' (6 1 0 m) in US and Ca nada. CSA appr ov ed heat er s instal led abov e 2000' (61 0 m) must be de -rat ed. F or instal lations abo ve 2000[...]

SECTION 5: D UC T H EATER I N STALLAT ION 7 SECTION 5: DUCT HEATER INSTALLATION 5.1 Gener al To connect the inlet and outlet ducts to the heater, Duct-Mate or si milar flanges may be slid over the duct connec tor fla nges supplied on the unit and secured with screws. The connection to th e duct then can be made using the Duct-Mate clip s. The ducts[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 8 5.2 Shelf Mounti ng and Suspension F our suspension points (3/8" nuts ) are loc ated on the t op of t he heater . Dr op r ods mus t be 3/8" diamet er mild st eel. When handli ng or suppor ting th e heater fro m below , ensure that the w eight is t ak en [...]

SECTION 5: D UC T H EATER I N STALLAT ION 9 F igure 4: Shelf-Mounti ng Methods F igure 5: W all Shelf Mounting and Suspension Shelf Mo u nting Brac kets Description P art Numb er Qty . Shelf Mounting Brac k et Kit 1 20 1 1 0 0 0K Shelf Mounting Brac ket 1 1 1 1 1 51 0 2 Scr ew #1 0 x 1/2" T ype A B Phil HWH Z 9431 1 008 2 Existi ng cabinet scr[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 10 SECTION 6: V ENTING 6.1 Changing V ent and Air In take Or ientati on The heater is sold with r ear horizont al v ent and air intak e connecti ons as standar d. (Only separat ed combusti on models ha v e air i ntak e connect ion). If vertical v ent and air int ake[...]

SECTION 6: V ENTING 11 V ents and air i ntak es must be adequat ely supported so t hat the heat er does not bear the w eight of the pipes. F or v ent te r minati on See P age 1 3, F igure 6 thro ugh P age 16, F igur e 1 1 . 6.3.1 Standar d V ented Heater s (Models UHD[X][R] 75 - 1 25) The v ent must be f it t ed with a low r esistance te r m i na l[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 12 and additi onal sealing measures (high t emperat ure silicone at all seams) a re requi red. The entir e v ent should be insul ated w ith f oil f aced fiber glass insulation (1/ 2" thic k, 1 -1/2# density min imu m). 6.7 .1 Maxim um V ent Lengths 6.8 V ent M [...]

SECTION 6: V ENTING 13 F igure 6: V ent and Ro of Detail F igure 7: Standar d V ented Heat er - V er tical and Horiz ontal V ent T er mination Model V ent Diameter Part Number UHD[X][R] 75 - 1 25 4" (1 0 cm) 90502 1 02[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 14 Fig ure 8 : Standar d V ented Heat er - Common V ertical V ent T erminat ion[...]

SECTION 6: V ENTING 15 F igure 9: Separ ated Comb ustion Heater - V er tical and Horiz ontal V ent T erm ination F igure 1 0: Concentr ic V ent Bo x Mode l Air In take & V ent Diameter Pa r t N um be r UHD[X]S[R] 75 - 1 25 4" (1 0 cm) 905021 02 4" (1 0 cm) Single W all V ent Pipe (By Others) Seal joint b et w een single w all and T yp[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 16 Fig ure 1 1: Concentr ic V er tica l and Hor izontal V ent T ermination - Separ ated Comb usti on Heater Description P ar t Number Q ty . Concentric V ent Kit UHVK1 Concentric V ent Box T op & Side Assembly 905041 13 1 Concentric V ent Box Bot tom Assembly 90[...]

SECTION 7: A IR S UPPLY 17 SECTION 7: AIR SUPPLY 7 .1 Separat ed Combus tion Installati on W hen installed as a separated comb ustion heat er (UHD[X]S[R]) , the ai r f or comb ustion is dra wn in fr om outside the b uilding . 7 .2 Un vente d Installation It is impor tant to ensur e that ther e is adequat e fr esh air supp ly at all times for both c[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 18 SECTION 8: GAS PIPING A gas met er is connect ed to the service pipe by th e gas s upply compan y . An e xisting meter should be check ed, pref erab ly by the compan y , t o ensur e that the meter is adequate f or the rat e of gas supply requi red. Instal lation [...]

SECTION 9: W IRIN G 19 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 plate f or electrical rati ng f or pr oper ci rcuit sizing . F or servicing , a disconnect sw itch of pr oper electrical r ating should be insta lled in the vicinity of the heater . All heat er s are equipped w ith[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 20 9.3 Inter nal Wi ring Diagr am IMPORT AN T : F or fiel d wiring int o ser vic e junction bo x, or if an y of the original w ire suppl ied wi th the heater must be r eplaced, it must be r eplaced w ith wi ring material ha ving a temperat ure rating of at least 1 0[...]

SECTION 9: W IRIN G 21 9.4 Ladder W iri ng Diagr am IMPORT ANT: F or fie ld wiring int o service junct ion bo x, or if any of the original wir e supplied w ith the heat er must be replac ed, it m ust be r eplaced with w iring mat erial ha ving a t emperatur e rating of at least 1 05 °C (221 °F) and 600 V . F or supply connections , use No. 1 4 A [...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 22 9.5 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 tached dir ectly t o heate r wit h wir e junction made w ithin the heat er cabinet. BX Connect or Junction Bo x Flexib le Conduit Burne[...]

SECTION 1 0: O PERATION AND M AINTENANCE 23 SECTION 1 0: OPERATION AND MAI NTENANCE R ead this manual car efully bef ore inst allation, operat ion, or ser vice of thi s equipment. All components are accessed via the door secured b y f our sheet metal scre ws. Opening the door e xposes liv e electrical connec tions and hot components. 1 0.1 Pr e-Sta[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 24 Fig ure 1 3: A utomatic Bur ner Contr ol Sequence F igur e 1 4: G as V alve 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 tp u t By Contr ol Re qu ired [...]

SECTION 1 0: O PERATION AND M AINTENANCE 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 ner) pre ssure test point a nd connect a pr essur e t ap and a man omet er . 2. With t he burner firing , measure the pressur e on the manomet er . T o adjust the burner pr essur[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 26 SECTION 1 1: USER INSTR UCTIONS 1 1 .1 User Instr uctions The UHD[X][S][R] Series heat er s are fully aut omatic and operat e from the e xternal control s fit ted on sit e. The only user control at the heat er i s the Man ual Reset Limit Switch - See P age 26, Se[...]

SECTION 1 1: U SER I NSTRUCTIONS 27 1 1 .4.2 T o T urn Heat er Of f Set the therm os tat t o the "OFF" position . The bu r ner w ill turn of f immediat ely . T o res tar t, tur n t he ther most at abo ve room t emperatur e. 1 1 .5 Simple T roub leshooting Some possib le reasons f or the heater not oper ating ar e: 1 . Gas supply no t &quo[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 28 SECTION 1 2: SERVICING 1 2.1 Servicing Inst ructions Af t er start-up , th e heater wi ll r equir e maint enance t o be carried out annually . If the heater i s used in a dir ty or dusty area, mor e frequent maint enance ma y be r equired. IMPORT ANT : Af ter an [...]

SECTION 1 2: S ERVICING 29 1 2.7 Maintenance Checkl ist Installat ion Code and Ann ual Inspecti ons: All install ations and serv ice of R O BER TS GORDON ® equipment must be perf or med b y a contract or qualif ied in t he inst allation an d ser vice equipment sold and supplied b y Robe r ts-Gor don and conform to al l requir ements set fo r th in[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 30 Gas Line and Shu t-of f Va l ve s Check f or g as leaks . See P age 18, Sectio n 8 . Burner Observ ation W indow Make sure it is clean and free of cr ack s or holes. Clean and r eplace as requi red. Flue Blo wer Scroll, Wheel and Motor Compr essed air or a v acuu[...]

SECTION 1 3: T ROU BLESH OOTING 31 SECTION 1 3: T ROUBLESHOOTING 1 3.1 General Ens u re air f lo w thro u gh the heat ex changer is appropriate per the r ating plate . If pro b lems persist, cont act Ro b er ts-Gordon, LLC at www .rg-inc.com Heater Operating TROUBLESHOO T ENDS. N o Replace limit s w itch. The limit s w itch has tripped. See Man u a[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 32 1 3.2 T roub leshooting F or A ut omatic Ignition Burn er S yst ems If pro b lems persist, cont act Ro b er ts-Gordon LLC at www .rg-inc.com Heater Operating TROUBLESHOO T ENDS. N o T race fa u lt in s u per v ision sy stem. See Tr o ub leshooting for Flame S u p[...]

SECTION 1 3: T ROU BLESH OOTING 33 1 3.3 T rou bleshootin g fo r Flame Supervision S y stem NO TE: Minimum f lame pr obe curr ent 1 μ A DC . T ypical f lame probe curr ent 3-5 μ A 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 Replace ignition contr ol. Use General Tr o ub leshooting[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 34 1 3.4 T r oubleshooting f or Gas V alv es 1 3.5 T r oubleshooti ng for Flu e Blow 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[...]

SECTION 1 4: R EPLACEMENT P AR TS 35 SECTION 1 4: REPLACEMENT P ARTS Burner Components All serviceable burner par ts are acc essed by the door on the side of the heat er . Remo v e the sheetmetal scre ws. 1 4.1 Gas V alve Remo v e the gas supply pipe at the heat er inlet. F ollo w step s in Section 1 4.2 and Section 1 4.2.1 to remo v e gas v alv e/[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 36 1 4.2 Bur ner Compar tment 1 4.2.1 Bur ner Injector s 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: Sepa[...]

SECTION 1 4: R EPLACEMENT P AR TS 37 1 4.3 Ignition Electrode and Flame P r obe 1 4.4 Heat Exc hanger The heat e x changer consists of a six -pass design w ith 1 .5" out er di ameter [a luminized steel ] [409 st ainless st eel] tub e. The tube plat es ar e made of [aluminiz ed st eel] [409 stai nless st eel]. T he tube supports are made of [ga[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 38 1 4.5 Flue Blo wer V ertical Installati on IT IS IMPORT A NT THA T ONL Y TH E CORRECT FLUE BL O WER SPE CIFIED FOR EA CH MODEL TYPE IS USED WHEN RE PLA CING THESE ITEMS. C arr y out a star t- up af t er working on or changing a flue b lo wer . See P age 26, Secti[...]

SECTION 1 4: R EPLACEMENT P AR TS 39 1 4.6 Pr essure S w itch P ull of f 3 w a y connect or . Spr ing ope n plastic c lips of mounting cradle . R eplace w ith corr ect type of pr essur e s w itch f or model. The pr essur e s w itches ar e color coded f or each pr essure set ting. C arry out a st ar t-up af t er working on or changing a pr essur e s[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 40 SECTION 1 5: SPECIF ICATIONS 1 5.1 Dimension Data Model UHD [X][S][R] 75 UHD [X][S][R] 1 0 0 UHD [X][S][R] 1 25 A Height in (cm) 17 . 79 (45.09) 23 (58.42) 23 (58.42) B Duct Connector Flange in (cm) 1. 2 5 (3) 1. 2 5 (3) 1. 2 5 (3) C Center of Flue [T op Option] [...]

SECTION 1 5: S PECIF ICATIONS 41 1 5.2 General T echnical Data T able *D o not e xceed the maxi mum length o f flue stated or heater may not operate properly . 1 5.3 T ech nical Data T able Model UHD[X][S][R] 75 UHD[X][S][R] 10 0 UHD[X][S][R] 12 5 F ull Load A mps @ 1 1 5 V A 1 2 2 Minimum Air V olum e CFM 850 950 1 020 T empe rature Rise @ Minimum[...]

UHD L OW P ROFI LE D UCT F URNACE I NSTA LLATION O PER ATION AND S ER VICE M AN UAL 42[...]

SECTION 1 6: R OBERTS GORDON ® COM B A T ® UHD-S ERIES W A R RANTY 43 SECTION 1 6: ROBER TS GORDON ® COMBA T ® UHD-SERIES W ARR ANTY 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 s hipment by Rober ts-Gordon (whichever comes first), replacement p ar ts will be pro vid ed fre[...]

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® O WNER W ARR ANTY REGIS TRA 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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W ARNING © 200 8 Ro b er ts-Gordon LLC www .rg-inc.com Printed in U.S .A. P/ N 91 039 8 31 At tach this infor mation to the w all near the ROBER TS GORDON ® heater Read the Installation, Operation and Service Manual thor ou g hly bef ore installation, operation or service. OPERA TING INSTR UCTIONS 1 . ST OP! Read all saf ety instr u ctions on thi[...]