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ES-T-294 Submittal Job ______________________________ Designer__________________________ Contact___________________________ Smart Boiler Control 294 The Smart Boiler Control 294 provides central and indirect domestic hot water heating or volume domestic hot water heating by operating up to four boilers. This can be expanded in groups of four boilers through the use of expansion controls up to a maximum of sixteen boilers. The 294 operates both condensing and non-condensing boilers that are either modulating, single, two, three or four-stage to provide a flexible, cost effective hybrid boiler plant solution. The Watts® OnSite web and mobile applications provide real-time remote monitoring, setting adjustments, and notifications. Front View Ref In Gnd Pressure Sens Ref In Gnd Pressure Sens 1 2 3 Out Sens Boiler + EMS Sensor 4 5 6 Smart Boiler Control 294 9" (229 mm) DHW Sensor 7 8 9 1 2 Heat + Call 3 Out Sens Boiler + EMS Sensor 4 DHW + Call 5 6 Setpoint + Call DHW Sensor 7 8 9 tN4 C Boiler Bus Heat + Call DHW + Call Setpoint + Call tN4 C Boiler Bus Side View + Gnd A B+ Gnd Expansion Boiler Modbus Class 2 Circuits 10 11 12 13 14 15 16 17 18 19 20 21 22 23 + Gnd A B+ Gnd Expansion Boiler Modbus Ethernet Class 2 Circuits 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Ethernet 24 24 FCC ID: 2AHQR-11500A IC: 21247-11500A Contains FCC ID: 2AC7Z-ESP32WROOM32E QOQMGM12P0 FCC ID: 2AHQR-11500A Contains FCC ID: 2AC7Z-ESP32WROOM32E QOQMGM12P0 Contains IC ID: 21098-ESPWROOM32E 5123A-MGM12P0 CAN ICES-3 (A)/NMB-3(A) Contains IC ID: 21098-ESPWROOM32E 5123A-MGM12P0 CAN ICES-3 (A)/NMB-3(A) Input Power: 115 V (ac) ±10%, 60 Hz, 9 W Relays: 230 V (ac), 5 A, 1/3 hp Calls: 24 V (ac) or Short Operating Temperature: 32°F to 122°F (0°C to 50°C) For product literature: Pour la documentation du produit: Watts.com/tekmar Input Power: 115 V (ac) ±10%, 60 Hz, 9 W Relays: 230 V (ac), 5 A, 1/3 hp Calls: 24 V (ac) or Short Operating Temperature: 32°F to 122°F (0°C to 50°C) Use Copper Conductors Only tektra 1150-01 Designed and assembled in Canada DANGER Use Copper Conductors Only To Reduce the Risk of Electric Shock - Do not connect to a circuit operating at more than 150 volts to ground. Pour réduire les risques d'électrocution choc - ne pas raccorder à un circuit fonctionnant à plus de 150 V à la terre. For product literature: Pour la documentation du produit: Watts.com/tekmar tektra 1150-01 Designed and assembled in Canada DANGER To Reduce the Risk of Electric Shock - Do not connect to a circuit operating at more than 150 volts to ground. Pour réduire les risques d'électrocution choc - ne pas raccorder à un circuit fonctionnant à plus de 150 V à la terre. Boiler Mod: Class 2 Circuits H2061A 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49Boiler 52 53 54 294 55 56 50 51 Control Smart Boiler 1 + Mod Boiler 2 + Mod Boiler 3 + Mod Boiler 2 Boiler H2061B 4 Boiler 1 Mod: Boiler + Mod Enable Class 2 Enable Circuits Boiler 3 Enable Boiler 4 Enable Boiler 1 Boiler 2 Boiler 3 Boiler 4 Pump/Vlv Pump/Vlv Pump/Vlv Pump/Vlv Comb System Air Relay Pump DHW Pump Power L N 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 Boiler 1 + Mod Boiler 2 + Mod Boiler 3 + Mod Boiler 4 + Mod Boiler 1 Enable Boiler 2 Enable Boiler 3 Enable Boiler 4 Enable Boiler 1 Boiler 2 Boiler 3 Boiler 4 Pump/Vlv Pump/Vlv Pump/Vlv Pump/Vlv Comb System Air Relay Pump DHW Pump Power L N 8" (203 mm) Features Specifications • Remote access using web/mobile app • Email, text message, push notifications • Operates 4 boilers • Expandable to 16 boilers • Boiler equal runtime rotation • Central heating with outdoor reset • Domestic hot water heating • DHW priority and priority override • Setpoint heating • tekmarNet compatible • Condensing/non-condensing groups • Variable primary flow • Combustion air damper control • Programmable setback schedule • PID and proportional staging options • Sequential or parallel staging • Fixed lead and fixed last options • Warm weather shut down • Pressure monitoring and alert • Setup Wizard Smart Boiler Control 294 2-11/32" (60 mm) Literature Submittal, Application, Installation and Operation Manual, Installation Sheet, Job Record Packaged weight 3.3 lb. (1500 g) Dimensions 9" H x 8" W x 2-11/32" D (229 x 203 x 60 mm) Display 5" color touchscreen Enclosure Blue ABS plastic, NEMA type 1 Approvals CSA C US, FCC Part 15B, ICES-003 Class A Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% non-condensing, Ambient conditions Altitude < 6560 feet (2000 m), Installation Category II, Pollution Degree 2 Power supply 115 V (ac) ±10%, 60 Hz, 9 W Relays 230 V (ac), 5A, 1/3 hp Modulating outputs 0-10 V (dc) 500 Ω minimum load impedance or 4-20 mA 1 kΩ max load impedance Calls 24 V (ac) or Short Sensor NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 –Included Outdoor Sensor 070, Universal Sensor 082 –Optional tekmar type # 071, 078, 087, 088 Communications 10/100 Ethernet, WiFi 802.11n, 2.4 GHz, WPA2 encryption Mobile App Apple iOS 14 or higher, Android 10 or higher Warranty Limited 3 Year (See IOM for full warranty) tekmar product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact tekmar Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on tekmar products previously or subsequently sold. Sample Application Drawing Sample Mechanical diagram 294 S1 S3 B4 B3 B2 B1 P6 S2 P4 P3 P2 P7 S4 P5 P1 Sample Electrical diagram S4 S1 S2 S3 T1 T2 - E1 C1 + Gnd LEGEND Ref In Gnd Pressure Sens 1 2 3 Out Sens Boiler + EMS Sensor 4 5 6 DHW Sensor 7 8 9 Heat + Call DHW + Call Setpoint + Call tN4 C Boiler Bus + Gnd A B+ Gnd Expansion Boiler Modbus Class 2 Circuits 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Ethernet 24 FCC ID: 2AHQR-11500A Contains FCC ID: 2AC7Z-ESP32WROOM32E QOQMGM12P0 Contains IC ID: 21098-ESPWROOM32E 5123A-MGM12P0 CAN ICES-3 (A)/NMB-3(A) Input Power: 115 V (ac) ±10%, 60 Hz, 9 W Relays: 230 V (ac), 5 A, 1/3 hp Calls: 24 V (ac) or Short Operating Temperature: 32°F to 122°F (0°C to 50°C) For product literature: Pour la documentation du produit: Watts.com/tekmar tektra 1150-01 Designed and assembled in Canada Use Copper Conductors Only DANGER To Reduce the Risk of Electric Shock - Do not connect to a circuit operating at more than 150 volts to ground. Pour réduire les risques d'électrocution choc - ne pas raccorder à un circuit fonctionnant à plus de 150 V à la terre. H2061B B1 = Boiler 1 B2 = Boiler 2 B3 = Boiler 3 B4 = Boiler 4 CA = Combustion Air Damper C1 = Modbus Communication to Boiler E1 = Ethernet (Optional) P1 = Boiler Pump 1 P2 = Boiler Pump 2 P3 = Boiler Pump 3 P4 = Boiler Pump 4 P5 = System Pump P6 = DHW Pump P7 = Setpoint Pump S1 = Outdoor Sensor 070 S2 = Boiler Supply Sensor 071 S3 = DHW Tank Sensor 078 (Optional) S4 = Pressure Sensor 088 (Optional) T1 = Central Heating Call T2 = Setpoint Call Smart Boiler Control 294 Boiler Mod: Class 2 Circuits 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 Boiler 1 + Mod Boiler 2 + Mod Boiler 3 + Mod Boiler 4 + Mod Boiler 1 Enable Boiler 2 Enable Boiler 3 Enable Boiler 4 Enable Boiler 1 Boiler 2 Boiler 3 Boiler 4 Pump/Vlv Pump/Vlv Pump/Vlv Pump/Vlv Comb System Air Relay Pump DHW Pump Power L N NOTICE L N G + - + - + - + - B1 B2 B3 B4 Modulating Boiler Signal T T T T T T T T B1 B2 B3 B4 On/Off Boiler Signal L N L N G P1 L N G P3 L N P2 G L N G CA L N P4 G P6 L N G P5 G The information contained herein is not intended to replace the full product installation and safety information available or the experience of a trained product installer. You are required to thoroughly read all installation instructions and product safety information before beginning the installation of this product. Tel: 1-800-438-3903 • F: (250) 984-0815 tekmarControls.com ES-T-294 2205 2 of 2 © 2022 tekmar