Page 2 - Starting Serial Numbers
2 enerco | Compact Unit Heater operating Instructions and owner’s Manual Starting Serial Numbers MHU45NG -- 260045-09001001 MHU45LP -- 260145-09001001 MHU75NG -- 260775-09001001 MHU75LP -- 260875-09001001 HSU45NG -- 160245-09001001 HSU45LP -- 160345-09001001 HSU75NG -- 160775-09001001 HSU75LP -- 160...
Page 3 - gENERAL HAZARD wARNINg:; FAIlURe To CoMPlY WITH THe PReCAUTIoNS AND; The State of California requires the following warning:; CONTENTS
operating Instructions and owner’s Manual enerco | Compact Unit Heater 3 gENERAL HAZARD wARNINg: FAIlURe To CoMPlY WITH THe PReCAUTIoNS AND INSTRUCTIoNS PRoVIDeD WITH THIS HeATeR, CAN ReSUlT IN DeATH, SeRIoUS BoDIlY INJURY AND PRoPeRTY loSS oR DAMAGe FRoM HAZARDS oF FIRe, eXPloSIoN, BURN, ASPHYXIATI...
Page 4 - SIDE VIEw; START–Up AND pERFORMANCE CHECK LIST
4 enerco | Compact Unit Heater operating Instructions and owner’s Manual MHU45/MHU75 AND HSU45/HSU75 UNIT DIMENSIONS (N-NATURAL gAS, p-pROpANE) gAS INLET SIDE VIEw SERVICE ACCESS pANEL HANgINg BRACKETS (2) ADJUSTABLE LOUVERS TOp VIEw MOUNTINg SLOTS (Typical) 5/16 x 3 Inches (8 x 76 mm) HANgINg BRACK...
Page 5 - SHIppINg; REQUIREMENTS – CSA IN C ANADA; table 1; gARAgE INSTALL ATIONS:; TABLE 1
operating Instructions and owner’s Manual enerco | Compact Unit Heater 5 SIDE VIEw Date: _______________________________________ State/Province: _______________________________ State/Province: _______________________________ Service Technician: ____________________________ SHIppINg The heater is com...
Page 6 - UNIT HEATER INSTALL ATION; figure 1; COMBUSTION AND VENTIL ATION AIR; C AUTION; VENTINg; TABLE 2; FIgURE 1
6 enerco | Compact Unit Heater operating Instructions and owner’s Manual These units are approved for residential applications. For installation in a residential garage, these units must be installed so that burners and ignition source are located no less than 18” (457mm) above floor. Heater must be...
Page 7 - figure 2; C – HORIZONTAL VENTINg – gENERAL; VENT TERMINATION ON SINGLE WALL VENT; FIgURE 2
operating Instructions and owner’s Manual enerco | Compact Unit Heater 7 B – VERTIC AL VENTS USINg METAL VENT pIpE – COMMERCIAL AND RESIDENTIAL INSTALL ATIONS MHU/HSU compact unit heaters are listed as Category I appliances for vertical vent installations. 1. MHU/HSU unit heaters are to be used with...
Page 8 - D – HORIZONTAL VENTINg – COMMERCIAL; E – HORIZONTAL VENTINg – RESIDENTIAL; FIgURE 3
8 enerco | Compact Unit Heater operating Instructions and owner’s Manual 5. Vent termination must be a minimum of 4’ (1.2m) below or 4’ (1.2m) horizontally from any soffit vent or under-eave vent. 6. Vent must be a minimum of 6’ from an inside corner formed by two exterior walls. If possible, leave ...
Page 9 - F – VENTINg USINg A MASONRY CHIMNEY; IMpORTANT; HORIZONTAL VENTINg - RESIDENTIAL INSTALL ATION; g – REMOVAL OF UNIT FROM COMMON VENT
operating Instructions and owner’s Manual enerco | Compact Unit Heater 9 F – VENTINg USINg A MASONRY CHIMNEY The following additional requirements apply when a lined masonry chimney is being used to vent the compact unit heater. 1. Masonry chimneys used to vent Category I units heaters must be eithe...
Page 10 - ELEC TRIC AL CONNEC TIONS; NOTE; wARNINg
10 enerco | Compact Unit Heater operating Instructions and owner’s Manual 5. Test for spillage at the draft hood relief opening after five minutes of main burner operation. Use the flame of a match or candle, or smoke from a cigarette, cigar, or pipe. 6. After it has been determined that each applia...
Page 11 - gAS CONNEC TION; UNIT START–Up
operating Instructions and owner’s Manual enerco | Compact Unit Heater 11 ignition control board emits radio noise as the sparking process is underway. The level of energy may be sufficient to disturb a logic circuit in a microprocessor controlled thermostat. It is recommended that an isolation rela...
Page 12 - Unit not available for conversion at this time.; ADJUSTMENTS; table 4; ROBERTSHAw 2000DER gAS VALVE; LED
12 enerco | Compact Unit Heater operating Instructions and owner’s Manual 12. If lockout occurs, repeat steps 1 through 9. 13. If appliance still will not operate, follow the instructions “To TURN OFF GAS TO UNIT” and call your service technician or gas supplier. TO TURN OFF gAS TO UNIT 1. Set therm...
Page 13 - SERVICE; TABLE 4
operating Instructions and owner’s Manual enerco | Compact Unit Heater 13 minimum of 5.0” w.c. for natural gas or 10.4” w.c. for LP/ propane gas should be maintained for proper unit operation. 2. After line pressure has been checked and adjusted, check manifold pressure. Correct manifold pressure is...
Page 14 - wIRINg SCHEMATIC FOR UNITS wITH
14 enerco | Compact Unit Heater operating Instructions and owner’s Manual BLUE BLUE BLACK BLACK BLACK BLACK EQUIPMENT GROUND WHITE WHITE WHITE (C OM) WHITE YELLOW VLV RTNVLV OUT YELLOW GREEN/YELL OW 1(S47) T1 24V 120V L1 A3 LINE VOLTAGE FIELD INSTALLED MAXIMUM LOAD NOT TO EXCEED 20VA AT 24V, CLASS 2...
Page 15 - ELEC TRIC AL
operating Instructions and owner’s Manual enerco | Compact Unit Heater 15 ELEC TRIC AL 1. Check all wiring for loose connections. 2. Check for correct voltage at unit (unit operating). 3. Check amperage draw. FLUE AND CHIMNEY Check all vent and vent connector joints for tightness. ensure that connec...
Page 16 - SEE BACK pAgE FOR pARTS ORDERINg INFORMATION
16 enerco | Compact Unit Heater operating Instructions and owner’s Manual pARTS LIST: SEE BACK pAgE FOR pARTS ORDERINg INFORMATION REF #. DESCRIpTION 45 ITEM # QUANTITY 75 ITEM # QUANTITY 1................. CIRCUIT BoARD .................................................... 60105 .......................
Page 18 - pARTS ORDERINg INFORMATION:; from the factory; FOR INFORMATION REgARDINg SERVICE; LIMITED wARRANTY; READ INSTRUC TIONS C AREFULLY:; Read and; OpERATINg INSTRUCTIONS AND OwNER’S MANUAL
18 enerco | Compact Unit Heater operating Instructions and owner’s Manual wARNINg: USe oNlY MANUFACTUReR’S RePlACeMeNT PARTS. USe oF ANY oTHeR PARTS CoUlD CAUSe INJURY oR DeATH. RePlACeMeNT PARTS ARe oNlY AVAIlABle DIReCT FRoM THe FACToRY AND MUST Be INSTAlleD BY A QUAlIFIeD SeRVICe AGeNCY. pARTS OR...
Page 19 - A VER; INfORMA; A CHA; GARANTIE LIMITÉE; LISEZ SOIGNEUSEMENT LES INSTRUCTIONS.
1 8 ener co | Appareils de cha uffage compa cts Guide d’utilisation e t instructions de fonctionnemen t A VER TISSEMENT : N'UTILISeZ Q Ue L eS PI èC eS de R eMPL ACe MeNT dU F ABRICANT . L'UTILIS A TI oN d'A UTReS PI èC eS RISQ Ue de CA USeR deS BL eSSUR eS oU L A Mo RT. L eS PI èC eS de ReCHANG e N...
Page 20 - ppareil de chauffage compact • Modèle MHU4
Guide d’utilisation e t instructions de fonctionnemen t ener co | Appareils de cha uffage compa cts 1 7 Mr. Hea ter / HeatStar • A ppareil de chauffage compact • Modèle MHU4 5/75 HSU4 5/75
Page 21 - LISTE d
1 6 ener co | Appareils de cha uffage compa cts Guide d’utilisation e t instructions de fonctionnemen t LISTE d ES PIÈCES : CONSUL TEZ L A d ERNIÈRE P A GE POUR d ES INfORMA TIONS SUR LES COMMANd ES d E PIÈCES N° RÉf. dESCRIPTION N ° ARTICLE 45 QUANTITÉ N ° ARTICLE 75 QUANTITÉ 1 .......................
Page 24 - A TTENTION
Guide d’utilisation e t instructions de fonctionnemen t ener co | Appareils de cha uffage compa cts 1 3 2. Une fois qu e v ous a v ez vérifié e t réglé la pression de canalisa tion vérifiez la pression d'admission. La pr ession d'admission e xa cte est indiquée sur la plaqu e signalétiqu e de l'appa...
Page 25 - RÉGLA
1 2 ener co | Appareils de cha uffage compa cts Guide d’utilisation e t instructions de fonctionnemen t 1 3. Si l'appareil ne f onctionne toujours pas, suiv ez les instructions « PO UR FERMER L'ALIMENT ATION EN GAZ DE L'APP AREIL » e t communiqu ez a v ec v o tre technicien de ser vice d'en tre tien...
Page 28 - IMPORTANT
Guide d’utilisation e t instructions de fonctionnemen t ener co | Appareils de cha uffage compa cts 9 f – VENTIL A TION UTILIS ANT UNE CHEMINÉE EN MAÇONNERIE L es e xigences additionnelles suivan tes s'appliquen t lorsqu'une cheminée en maçonnerie chemisée est utilisée pour la v entila tion de l'app...
Page 31 - fIGURE
6 ener co | Appareils de cha uffage compa cts Guide d’utilisation e t instructions de fonctionnemen t Ces appareils de cha uffage son t approuvés pour une utilisa tion dans des maisons. en cas d'installa tion dans un gar age domestique, ces appar eils doiven t être installés de manièr e à ce que les...
Page 32 - tableau 1; INST ALL
Guide d’utilisation e t instructions de fonctionnemen t ener co | Appareils de cha uffage compa cts 5 VUE LA TÉRALE EXPÉd ITION L'appareil de cha uffage est en tièremen t assemblé. L es instructions d'installa tion, de ux supports de mon tage (non fixés) et un tuy a u de transition du conduit de che...
Page 35 - Numéros de série de début
2 ener co | Appareils de cha uffage compa cts Guide d’utilisation e t instructions de fonctionnemen t Numéros de série de début MHU4 5NG -- 2 600 4 5-0900 1 00 1 MHU4 5LP -- 2 60 1 45-0900 1 00 1 MHU7 5NG -- 2 60 775-0900 1 00 1 MHU7 5LP -- 2 608 7 5-0900 1 00 1 HSU4 5NG -- 1 60 2 45-0900 1 00 1 HSU...
Page 36 - TER
1 0/09 Nº 60 0 16 ENERCO G R O UP, INC., 45 60 W . 160TH ST ., CLEVELAND, OHIO 4 4 13 5, ÉTA TS-UNIS • 21 6-91 6-3000 LISE Z AT TENTI VEMENT LES INS TRU CTI ONS. Lis ez et sui vez les ins tru ctions dans leu r in tég r ali té. Co nse rve z ce gui de dans un end roi t sûr pour pou voi r vous y ré fér...