
"AT" SERIES ELECTRIC HOT WATER BOILERSFOR FORCED HOT WATERInSTALLATIOn MAnUAL AnD OPERATInG InSTRUCTIOnS P/N I80, Rev. A [05/08]An ISO 9001-
10TEMPERATURE CONTROL RANGES:Temperature: Degrees FahrenheitOperating Temperature Range: 90°F - 180°F(Factory Setting: 180°F)Operating Temperature Dif
11HEATING ELEMENTS ENERGIZED(ACTIVATION DES ÉLÉMENTS DE CHAUFFAGE)SOURCE POWER, 240V/60HZ/1PH 3-WIRE, BY OTHERS(SOURCE DU COURANT, 240V/60HZ/1PH 3-FIL
12- DRY CONTACT FIELD WIRING (POSE DES CÂBLES DE CONTACT SEC EN CHANTIER)LOAD CENTER(CENTRE DE CHARGE)ON(OUVERT)TRANSFORMER(TRANSFORMATEUR)NEUTRAL BL
13WHT/BLK (BLANC/NOIR)NEUTRAL BLOCK(BLOC NEUTRE)WHT/BLK (BLANC/NOIR)WHT (BLANC)WHT (BLANC)WHT (BLANC)WHT/BLK (BLANC/NOIR)OFF(FERMÉ)ELEMENT #4(ÉLÉMENT
14SOURCE POWER, 240V/60HZ/1PH 3-WIRE, BY OTHERS(SOURCE DU COURANT, 240V/60HZ/1PH 3-FILS, OU AUTRES)NEUTRAL BLOCK(BLOC NEUTRE)WHT/BLK (BLANC/NOIR)WHT (
15THERMOSTAT INSTALLATION1. Thermostat should be installed on an inside wall about four feet above the oor.2. NEVER install a thermostat on an outsid
168. When the thermostat calls for heat, the circulator will be energized and the indicator LED will light up. Next, the heating elements are en
171. Turn off hydronic unit circuit breaker at service entrance and/or disconnect switch.MAINTENANCEthe pressure relief valve by pulling the lever at
18PARTS LIST - 2 ELEMENT ELECTRIC BOILERS2 ELEMENT BOILER (Side View)32167451098674510982 ELEMENT BOILERWith Power Block2 ELEMENT BOILER With Breakers
19PARTS LIST - 4 ELEMENT ELECTRIC BOILERS2134 ELEMENT BOILER (Side View)4 Element Electric Boiler w/BreakersItemPart NumberDescription1 S47 Safety Lim
2INSTALLATION MANUAL AND OPERATING INSTRUCTIONSTABLE OF CONTENTSSafety Symbols ...2Warnings ...
20T W R T C 5 NC 6 NO 6 L2 L1 3 4 NO 4 NO 13 14 5 9 8 12 "AT" BOILER THERMOSTAT SPST(2 WIRE) 24 VAC CIR. CIRCULATOR PUMP 120 VAC PRIM
21ADDITIONAL WIRING DIAGRAMS"AT" BOILER CIR. CIRCULATOR PUMP 120 VAC PRIMARY TT TT C1 C2 "AT" BOILER CIR. CIRCULATOR PUMP 120 VAC
22ADDITIONAL WIRING DIAGRAMS"AT" BOILER C1 C2 CIR. CIRCULATOR PUMP 120 VAC TT TT PRIMARY X X ZONE 1 ZONE 2 T T SWITCH END ZONE 1 THERMOST
23MODULAR BOILER PIPING!2'/%,%#42)#"/),%2$2!).6!,6%02%3352%4%-0%2!452%'!5'%02%3352%2%,)%&6!,6%0)0%4/7)4()./&&
24TROUBLESHOOTING - FLOWCHART#1Green T-T indicator LED is on; there is a call for heat.Verify the boiler control board switch is on.Verify 120vac is p
25Verify power supply to system.TROUBLESHOOTING - FLOWCHART#2Is the circulator indicator LED on?No (From Flowchart#1)YesNo Verify that circulator is o
26TROUBLESHOOTING - FLOWCHART#3Is visual/audible alarm ashing/pulsing once?Is a low water cut-off installed?Safety Switch Fault.Remove leads from HL-
27TROUBLESHOOTING - FLOWCHART#4"AT" SERIES BOILER DIMENSIONSABCDERemove jumper fromLWC-LWC and replace LWC-LWC leads.OKCheck water supply an
HOMEOWNER'S REFERENCE TABLEModel Number: _____________________________________________Serial Number: ___________________________________________
3INTRODUCTIONThis manual is intended to familiarize the installer and user of the Electric Hydronic Block with its installation, operation a
4The following important product information is located on the cabinet cover:• Model Number• Manufacturer's Serial Number• BTU Rating• Heating E
5! ! INSTALLATION PROCEDUREImproper installation, adjustment, alteration, service or maintenance can cause injury or property damage.1. The
6DESIGN OF WATERCIRCULATING SYSTEMSystem should be designed as primary/secondary piping and to operate with a maximum output tem-perature of 180º F or
7PRIMARY/SECONDARY PIPING FORMULTIPLE ZONING WITH ZONE VALVESFIGURE 3PRIMARY/SECONDARY PIPING FORMULTIPLE ZONING WITH CIRCULATORSFIGURE 2PRIMARY/SECON
8CONNECTING ELECTRICAL POWER SUPPLY! ! WIRING THE BOILERWARNINGDO NOT USE ALUMINUM WIRE!!Argo Electric Hydronic Boilers are pre-wired for use
9ampacity and temperature. Use copper wire only with insulation rated for 75 °C. Check state and local requirements.NOTE: Read the data name plate
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