AT SERIES ELECTRIC HOT WATER BOILERS

1 "AT" SERIES ELECTRIC HOT WATER BOILERS . INSTALLATION MANUAL AND OPERATING INSTRUCTIONS FOR forced HOT WATER . ARGO TECHNOLOGY, INC. 554 Berlin Turnpike Berlin, CT 06037. Phone: (860) 828-6513. Fax: (860) 828-3856 An ISO 9001-2000 Certified Company P/N I-80, Rev. [08/04]. INSTALLATION MANUAL AND OPERATING INSTRUCTIONS. P/N# I-80, Rev. [05/04] Printed in USA Made In USA. TABLE OF CONTENTS SAFETY SYMBOLS. Safety Symbols .. 2 The following defined symbols are used throughout Warnings .. 3 this manual to notify the reader of potential hazards Introduction .. 3 of varying risk levels. Product Description .. 3. Voltage Rating Tables .. 4 ! DANGER ! Installation Procedure .. 5. Design of WATER Circulating System.

2 6 Indicates an imminently hazardous situation Connecting Supply and Return Piping .. 6 which, if not avoided, WILL result in death or Connecting Electrical Power Supply .. 8 serious injury. Wiring Diagrams .. 11. Thermostat Installation .. 15 ! WARNING ! Startup and Seasonal Maintenence .. 15. Troubleshooting .. 16 Indicates a potentially hazardous situation Maintenance .. 17 which, if not avoided, COULD result in death Parts List - 2 Element ELECTRIC BOILERS .. 18 or serious injury. Parts List - 4 Element ELECTRIC BOILERS .. 19. Additional Wiring Diagrams .. 20 ! CAUTION ! Modular boiler Piping .. 23. Troubleshooting .. 24 Indicates a potential hazardous situation "AT" SERIES boiler Dimensions.

3 27 which, if not avoided, MAY result in minor or Homeowner's Reference 28 moderate injury. It may also be used to alert against unsafe practices. KEEP THIS MANUAL NEAR boiler . RETAIN FOR FUTURE REFERENCE IMPORTANT: Read the following instructions COMPLETELY before installing!! 16027 Tested For 30 LBS. ASME. Working Pressure 2. WARNINGS INTRODUCTION. ! WARNING ! This manual is intended to familiarize the installer and user of the ELECTRIC Hydronic Block with its 1. boiler SIZING IS CRUCIAL. The maximum installation, operation and maintenance so as to hourly heat loss for each heated space should assure its normal trouble free operation. be calculated in accordance with the proce- dures describes in The Hydronics Institute Argo ELECTRIC BOILERS are designed and manufactured (I=B=R) manual H-22 (Heat Loss Calculation with quality components for maximum life and Guide), or by any other method which is suit- durability and require minimum service.

4 To insure a able for local conditions, provided the results satisfactory installation it is imperative that the are in substantial agreement. Select the ap- instructions be followed carefully before operating propriate boiler based on accurate heat loss the heating system. Failure to do so may result in calculation. DO NOT OVERSIZE THE boiler , breach of warranty. AS SIZING IS CRITICAL FOR IN-FLOOR RADI- ANT HEAT APPLICATIONS. PRODUCT DESCRIPTION. 2. Keep boiler area clear and free from com- The ELECTRIC Hydronic Block is a heating device that bustible materials, gasoline and other flam- converts electrical energy to heat energy through mable vapors and liquids. the medium of WATER .

5 The simplified theory of this conversion is as follows: 3. DO NOT obstruct air openings to the boiler room. Electrical Energy x Conversion Factor = Heat Energy -or- 4. Modification, substitution or elimination of Kilowatts Of Electricity Used Per Hour x 3412 = British factory equipped, supplied or specified com- Thermal Units (BTUs) Available Per Hour For Heating ponents may result in property damage, per- This information is the basis used to establish Elec- sonal injury or the loss of life. tric Hydronic Block ratings (See Table 1 on page 4). Since the conversion process requires no combus- 5. TO THE OWNER: Installation and service of tion, the boiler operates with the highest possible this boiler must be performed by a qualified efficiency.

6 Installer. The ELECTRIC Hydronic Block is constructed with a 6. TO THE INSTALLER: Leave all instructions cast iron boiler that conforms to the American Soci- with the boiler for future reference. ety of Mechanical Engineers (ASME) boiler & Pres- sure Vessel Code. The interior design allows just 7. When this product is installed in the Com- enough WATER to be present for proper heating ele- monwealth of Massachusetts the installation ment operation - no excess WATER is stored which must be performed by a licensed plumber or would cause undersirable thermal losses and longer licensed gas fitter.* recovery times. * In other areas, consult your local codes. The control system is assembled in a modular pack- age thus keeping the overall size and weight of the !

7 WARNING ! ELECTRIC Hydronic Block to a minimum. The construc- tion of the entire ELECTRIC Hydronic Block conforms to All installations of BOILERS should be done only Canadian Standards Association (CSA) Standards by a qualified expert and in accordance with for Safety for ELECTRIC BOILERS . the appropriate Argo manual. Installing a boiler or any other ELECTRIC appliance with improper methods or materials may result in serious injury or death due to fire. 3. The following important product information is lo- ARGO ELECTRIC BOILERS are controlled by a electronic cated on the cabinet cover: temperature controller. The controller controls the boiler WATER temperature with multiple stages and Model Number turns stages on based on the heating demand, and Manufacturer's Serial Number the preset boiler outlet WATER temperature.

8 The con- BTU Rating troller also can control 120 Vac circulating pumps Heating Element Ratings rated up to 5A. When the thermostat calls for heat, WATER Pressure & Temperature Limits the controller will operate the boiler to regulate the CSA Listing WATER temperature at a pre-selected set point. The ASME Stamp system pump is on whenever there is a thermostat Total Amps calling for heat. Clearance VOLTAGE RATING TABLES. TABLE 1 - ELECTRIC HYDRONIC BLOCK RATINGS SPECIFICATIONS (SINGLE PHASE UNITS). A - STANDARD 240V RATINGS. "AT" SERIES - 2 Element boiler boiler Total Operating Net Heat Power Number Element Maximum Suggested Suggested Size Heating Model Voltage Output Input of Size Amperage Wire Size Breaker Size Nominal Element (AC) BTU/Hr.

9 Watts Elements (Watts) Per Leg (1) (AWG) (2)(3) (Amps) (3). KW Amperage AT0623 6 240 20,472 6,000 2 3,000 8 40. AT0824 8 240 27,296 8,000 2 4,000 6 50. AT1025 10 240 34,120 10,000 2 5,000 6 60. AT1226 12 240 40,944 12,000 2 6,000 4 70. "AT" SERIES - 4 Element boiler AT1243 12 240 40,944 12,000 4 3,000 4 70. AT1644 16 240 54,592 16,000 4 4,000 3 90. AT2045 20 240 68,240 20,000 4 5,000 2 100. AT2446 24 240 81,888 24,000 4 6,000 1 125. B - DE-RATED 208V RATINGS. "AT" SERIES - 2 Element boiler boiler Total Operating Net Heat Power Number Element Maximum Suggested Suggested Size Heating Model Voltage Output Input of Size Amperage Wire Size Breaker Size Nominal Element (AC) BTU/Hr. Watts Elements (Watts) Per Leg (1) (AWG) (2)(3) (Amps) (3).

10 KW Amperage AT0623 6 208 15,377 4,507 2 3,000 8 40. AT0824 8 208 20,502 6,009 2 4,000 8 50. AT1025 10 208 25,628 7,511 2 5,000 6 60. AT1226 12 208 30,753 9,013 2 6,000 6 70. "AT" SERIES - 4 Element boiler AT1243 12 208 30,753 9,013 2 3,000 6 70. AT1644 16 208 41,005 12,018 2 4,000 4 90. AT2045 20 208 51,256 15,022 2 5,000 3 100. AT2446 24 208 61,507 18,027 2 6,000 1 125. (1) Allow s for 6A control and accessory load in addition to heat load (2) Type "THW" w ire, copper only, check local codes (Sizes taken from Table 2 & Table 310-16.). (3) Actual w ire and breakers need to be sized based on specific installation requirements in accordance w ith National Electrical Code (NEC), Canadian Electrical Code (CEC), and local codes (w here applicable).