Weil-McLain SVF 1 Series Advanced Installation Manual
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Weil-McLain SVF 1 Series Advanced Installation Manual

Weil-McLain SVF 1 Series Advanced Installation Manual

Commercial condensing gas-fired water boilers
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Advanced Installation Manual
WARNING
!
Installation and service of the boiler must be performed by a qualified installer or service technician.
Read all instructions, including this manual and all other information shipped with the boiler, before
installation or operation. Perform steps in the order given. Failure to comply can result in severe
personal injury, death or substantial property damage.
Models 725/850 Series 1
1500-3000 Series 2
Commercial Condensing
Gas-Fired Water Boilers
1000 Series 1
Manual Part Number 550-143-071/0924

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  • Page 1 Models 725/850 Series 1 1000 Series 1 1500-3000 Series 2 Commercial Condensing Gas-Fired Water Boilers Advanced Installation Manual WARNING Installation and service of the boiler must be performed by a qualified installer or service technician. Read all instructions, including this manual and all other information shipped with the boiler, before installation or operation.

  • Page 2: Table Of Contents

    Table of ConTenTs svf series 725/850, 1000 1 / 1500-3000 Series 2 advanCed insTallaTion manual Contents Abbreviations ..... . 2 Wiring Overview Section 1 SAFETY .

  • Page 3: Section 1 Safety

    SeCTion 1 Safety Please Read Before Proceeding This section is intended to provide safety information Section Contents WARNING Safety Signals Adhere to all following guidelines and instructions Please Read Before Proceeding in this section. Failure to adhere to these guidelines Safety Signals can result in severe personal injury, death, or substantial property damage.

  • Page 4: Boiler Water

    safeTy series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Please Read Before Proceeding (continued) Boiler Water Freeze Protection Fluids • Since the heat exchanger is made of stainless NEVER use automotive or standard glycol antifreeze, steel, the water chemistry must be checked The including glycol made for hydronic systems Use only system pH must be in the range of 7 0 to 8 5 freeze-protection fluids recommended in boiler manual.

  • Page 5: Section 2 Setup

    SeCTion 2 Setup Section Contents c If a combustion air damper is used, wire to boilers to prevent operation, except after damper has Multiple Boiler Installations opened EXPRESS SETUP Requirements EXPRESS SETUP Steps Figure 1 Side-by-side mounting of multiple SVF boilers EXPRESS SETUP Wizard EXPRESS SETUP Single Boilers —...

  • Page 6: Multiple Boiler Water Piping

    seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Multiple Boiler Installations (continued) Manifolded Combustion Air Option, cont. Figure 3 Multiple Boiler Header Connection WARNING ONLY air piping can be combined. DO NOT use 8 pipe diameters max combined vent piping as flue gas leakage and (or as close as practical) boiler component damage can occur.
  • Page 7 series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Recommended Pipe Sizing Figure 5 Pressure drop versus flow rate for SVF boilers WARNING Pressure Drop vs Flow DO NOT design the piping and components for a boiler flow rate above or below the ranges given in Figure 6 and Figure 7, page 8 without using one of the piping strategies listed below.
  • Page 8 seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Recommended Pipe Sizing (continued) IMPORTANT Figure 7 Flow rate and pressure drop data At lower flow rate, increase pressure to 15psi or greater SVF 1000 as show in Figure 7 100% Rate Minimum Water Boiler Head Loss...
  • Page 9 series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Recommended Pipe Sizing (continued) Figure 8 Pressure drop versus flow rate for SVF boilers Figure 9 Recommended pipe sizing per flow rate 12.0 Sch 40 Pipe Maximum Flow SCH 40 Pipe Maximum Flow Diameter...

  • Page 10: Express Setup Requirements

    seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Requirements Control Features Automatic flue gas temperature and outlet (supply) temperature compensation to prevent over-firing of the 7" color touchscreen display with one or more USB ports boiler equipment Standard on-board Ethernet port for wired Internet Automatic differential temperature compensation to...

  • Page 11: Sequence Of Operations

    series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Sequence of Operations Figure 11 Ignition sequencing timing WARNING IGNITION SEQUENCE TIMING If any manual reset limit device trips, DO NOT reset BLOWER without determining and correcting the cause. GAS VALVE Never attempt to bypass a safety limit device.

  • Page 12: Express Setup Steps

    seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Steps WARNING The Wizard must be used when using the EXPRESS Setup procedure to ensure that all required settings are made. All instructions in the SVF 725/850 & 1000-3000 boiler manual must be followed completely. Failure to comply can result in severe personal injury, death, or substantial property damage.

  • Page 13: Express Setup Wizard

    series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Wizard The Setup Wizard is recommended for all boilers The Figure 12 Settings screen Setup Wizard guides users through the parameter setup for all relevant applications based on the responses to a series of questions The Setup Wizard is accessible through the Settings menu see Figure 12 While navigating the Setup Wizard, press the desired...

  • Page 14: Express Setup Single Boilers-Example A

    seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Single Boilers — Example A Multi-zone SPACE HEATING (Circulators with circulator relays) | DHW (Direct-piped) Purpose • DHW piped directly to the boiler • DHW priority—space heating is disabled during call for •...

  • Page 15: Control Setting Notes

    series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Single Boilers — Example A (continued) Control Setting Notes Table 2 Control settings, Example A single boilers NOTICE BOLD ITALIC - value must be set or Verify in the control that the correct operating CONTROL SETTINGS verified...
  • Page 16 seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Single Boilers — Example A (continued) FIELD WIRING - Circulators with Circulator Relays Zone Zone Zone Thermostat Thermostat Thermostat Additional Zones (if any) Circulator Circulator Circulator Relay Relay Relay...

  • Page 17: Express Setup Single Boilers-Example B

    series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Single Boilers — Example B Multi-zone SPACE HEATING (Zone Valves) | DHW (Direct-piped) Purpose Control Setting Notes • See the table on the next page for settings. •...

  • Page 18: Circulators And Piping

    seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Single Boilers — Example B (continued) Control Setting Notes, continued Table 3 Control settings, Example B single boilers NOTICE BOLD ITALIC - value must be set or CONTROL SETTINGS verified Verify in the control that the correct operating...
  • Page 19 series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Single Boilers — Example B (continued) FIELD WIRING 4-Wires Zone Valve End Switches TB-1 / LV J8-1 ENABLE / DISABLE [User Define] (CH TT) J8-3 ENABLE / DISABLE [User Define] (CH TT) J8-6 4-20mA ANALOG INPUT [+] Additional Zones...

  • Page 20: Express Setup Multi-Boilers-Example A

    Figure 7, page 8 all applicable codes DHW pump Primary pump Indirect-fired storage water heaters (Weil-McLain AQUA PLUS shown) See Expansion tank (diaphragm type shown). water heater manual for DHW piping System air eliminator System automatic air vent...

  • Page 21: Circulators And Piping

    series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example A (continued) Circulators and Piping • Piping must be primary/secondary as shown • DHW circulators supplied by installer Size WARNING circulators for required flow. Provide an external relay and external power to all •...
  • Page 22 seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example A (continued) Table 4 Typical Application A multiple boiler system setup requirements Parameters not listed below can be left at factory default settings, unless special needs indicate different settings. BOLD ITALIC - value must be set CONTROL SETTINGS or verified...
  • Page 23 series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example A (continued) MASTER BOILER - FIELD WIRING NOTICE SVF725/850 terminal shown; Terminal # IDs vary depending on boiler model. See “High Voltage (TB2) Terminal Block Wiring – SVF 725/850”...

  • Page 24: Express Setup Multi-Boilers-Example B

    seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example B Multiple Boiler using isolation exchanger Purpose Space heating provided by hot water supply of heat exchanger to terminal units. • Isolation heat exchanger for applications with •...

  • Page 25: Control Setting Notes

    series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example B (continued) Multiple Boiler using isolation exchanger Use an isolation heat exchanger for: Control Setting Notes • Large volume systems with high mineral content in •...
  • Page 26 seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example B (continued) Table 5 Typical Application B multiple boiler system setup requirements Parameters not listed below can be left at factory default settings, unless special needs indicate different settings. BOLD ITALIC - value must be set Member 2 Boiler Setup: Setup Wizard CONTROL SETTINGS...
  • Page 27 series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example B (continued) Member 3 Boiler Setup: Setup Wizard Member 4 Boiler Setup: Setup Wizard Will this boiler operate alone or as part of a Will this boiler operate alone or as part of a Boiler in Cascade System Boiler in Cascade System...
  • Page 28 seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example B (continued) MASTER BOILER - FIELD WIRING NOTICE SVF725/850 terminal shown; Terminal # IDs vary depending on boiler model. See “High Voltage (TB2) Terminal Block Wiring – SVF 725/850”...
  • Page 29 series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example B (continued) MEMBER 3 BOILER - FIELD WIRING NOTICE SVF725/850 terminal shown; Terminal # IDs vary depending on boiler model. See “High Voltage (TB2) Terminal Block Wiring – SVF 725/850”...

  • Page 30: Express Setup Multi-Boilers-Example C

    Typical application shown with shell and when needed tube heat exchanger provided by installer. • Combine Weil-McLain condensing boilers and large- mass boilers in one system controlled by the control Figure 17 Piping schematic - typical piping for multiple SVF boilers Adjust boiler connections as required for other boiler models...

  • Page 31: Control Setting Notes

    series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example C (continued) Control Setting Notes Circulators and Piping • See Table 6, page 32 for required and optional WARNING settings Provide an external relay and external power to all •...
  • Page 32 seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example C (continued) Table 6 Typical Application C multiple boiler system setup requirements Parameters not listed below can be left at factory default settings, unless special needs indicate different settings. BOLD ITALIC - value must be set Member 2 Boiler Setup: Setup Wizard CONTROL SETTINGS...
  • Page 33 series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example C (continued) MASTER BOILER - FIELD WIRING NOTICE SVF725/850 terminal shown; Terminal # IDs vary depending on boiler model. See “High Voltage (TB2) Terminal Block Wiring – SVF 725/850”...

  • Page 34: Express Setup Multi-Boilers-Example D

    8 Indirect-fired storage water heaters 12 as shown in Figure 7, page 8 (Weil-McLain AQUA PLUS shown) See Boiler T&P gauge 17A) B o i l e r - M o t o r i z e d I s o l a t i o n Va l v e...

  • Page 35: Control Setting Notes

    series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example D (continued) Control Setting Notes • Size Variable Primary System Circulator for required flow. • See Table 7, page 36 for required and optional •...
  • Page 36 seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example D (continued) Table 7 Typical Application D multiple boiler system setup requirements Parameters not listed below can be left at factory default settings, unless special needs indicate different settings. Select “Yes”...
  • Page 37 series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example D (continued) Member 2 Boiler Setup: Setup Wizard Will this boiler operate alone or as part of a Boiler in Cascade System Cascade System? Will the boiler be a Cascade Master or Cascade Member Cascade Member?
  • Page 38 CSA C22 1 latest edition Installed conduit must not block any of the boiler’s openings and must allow the front door to be opened ** Isolation valve wiring shown assumes use of Weil-McLain’s Isolation Valves and the wiring setup based on page 35, if other Isolation Valves or alternative wire methods are used, additional relays on Control Board can provide power to drive isolation valve in opposite direction Adjust control parameters accordingly See “Isolation / By-Pass Valve Wiring”...

  • Page 39: Express Setup Multi-Boilers-Example E

    series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example E Multiple Boiler using Variable-Primary Piping Purpose • Space heating with multiple zones using primary piping with variable speed system circulator Figure 19 Piping schematic - typical piping for multiple SVF boilers Adjust boiler connections as required for other boiler models NOTICE 38 –...

  • Page 40: Control Setting Notes

    seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example E (continued) Control Setting Notes Circulators and Piping • See Table 8, page 41 for required and optional WARNING settings Provide an external relay and external power to all •...
  • Page 41 series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example E (continued) Table 8 Typical Application E multiple boiler system setup requirements Parameters not listed below can be left at factory default settings, unless special needs indicate different settings. BOLD ITALIC - value must Notes: CONTROL SETTINGS...
  • Page 42 seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example E (continued) Member 2 Boiler Setup: Setup Wizard Member 3 Boiler Setup: Setup Wizard Will this boiler operate alone or as part of a Will this boiler operate alone or as part of a Boiler in Cascade System Boiler in Cascade System...
  • Page 43 series seTup 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual EXPRESS SETUP Multi-Boilers — Example E (continued) Member 4 Boiler Setup: Setup Wizard Will this boiler operate alone or as part of a Boiler in Cascade System Cascade System? Will the boiler be a Cascade Master or Cascade Member Cascade Member?
  • Page 44 CSA C22 1 latest edition Installed conduit must not block any of the boiler’s openings and must allow the front door to be opened ** Isolation valve wiring shown assumes use of Weil-McLain’s Isolation Valves and the wiring setup based on page 40, if other Isolation Valves or alternative wire methods are used, additional relays on Control Board can provide power to drive isolation valve in opposite direction Adjust control parameters accordingly See “Isolation / By-Pass Valve Wiring”...
  • Page 45 CSA C22 1 latest edition Installed conduit must not block any of the boiler’s openings and must allow the front door to be opened ** Isolation valve wiring shown assumes use of Weil-McLain’s Isolation Valves and the wiring setup based on page 40, if other Isolation Valves or alternative wire methods are used, additional relays on Control Board can provide power to drive isolation valve in opposite direction Adjust control parameters accordingly See “Isolation / By-Pass Valve Wiring”...
  • Page 46 seTup series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual This page intentionally left blank 550-143-071/0924...

  • Page 47: Section 3 Electrical

    SeCTion 3 Electrical Power Requirements This section is intended to provide wiring and zoning instructions for qualified installers and service • The SVF 725/850/1000 boilers are manufactured contractors for 120 VAC, 60 Hz electrical service Section Contents • The SVF 1500-2000 boilers are manufactured for Electrical –...

  • Page 48: Field Wiring

    eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring Terminal Connections See the figures on page 49 for knockout locations 1. Line voltage: SVF725/850 725/850: Three knockouts on the left of the cabinet, and Low voltage field wiring terminal strips are inside the control three knockouts on the back (Line In, Relay A, B, C, D) tray on the right side of the boiler 1000-3000: Three knockouts on the back of the...
  • Page 49 series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Figure 20 Terminal block locations - SVF 725/850 Figure 21 Terminal block locations – SVF 1000-2000 Back Knockouts Front Knockouts Low Voltage Low Voltage Terminal Block Terminal Block (TB1) (TB1)

  • Page 50: Schematic Diagram - Svf

    eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Schematic Diagram – SVF 725/850 Figure 23 Schematic wiring diagram for SVF boilers (continued on the next page) To Start Interlock Device 120 VAC Power for boiler 120 VAC 120 VAC End Limit...

  • Page 51: Schematic Wiring Diagram

    series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Schematic Diagram, continued – SVF 725/850 Frame Ground Analog Analog System Outdoor Night Boiler to Modbus Wireless Input Output Supply Setback Thermostat Aquastat/ Air T emp. External Boiler Cable From...

  • Page 52: Ladder Diagram - Svf

    eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Ladder Diagram – SVF 725/850 Figure 24 Ladder wiring diagram for SVF boilers (continued on the next page) 550-143-071/0924...
  • Page 53 series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Ladder Diagram – SVF 725/850, continued 550-143-071/0924...

  • Page 54: Schematic Diagram - Svf 1000

    eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Schematic Diagram – SVF 1000 Figure 25 Schematic wiring diagram for SVF 1000 boilers LCO-1 LCO-1A ON/OFF Circuit Breaker LWCO Test Switch Switch J1-3 Schematic Wiring Diagram J1-2 Bussmann FNQ-R 10A Class Fuse...

  • Page 55: Ladder Diagram - Svf 1000

    series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Ladder Diagram – SVF 1000 Figure 26 Ladder wiring diagram for SVF 1000 boilers NOTICE See “Ladder Diagram Notes” on page 82 for important information Legend for Ladder 120 vac This symbol indicates connector pin number .

  • Page 56: Schematic Diagram - Svf 1500-2000

    eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Schematic Diagram – SVF 1500-2000 Figure 27 Schematic wiring diagram for SVF 1500-2000 boilers 550-143-071/0924...

  • Page 57: Ladder Diagram - Svf 1500-2000

    series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Ladder Diagram – SVF 1500-2000 Figure 28 Ladder wiring diagram for SVF 1500-2000 boilers NOTICE See “Ladder Diagram Notes” on page 82 for important information Legend for Ladder 208-240 vac This symbol indicates connector pin number.

  • Page 58: Schematic Diagram - Svf 2500-3000, 240V

    eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Schematic Diagram – SVF 2500-3000, 240V Figure 29 Schematic wiring diagram for SVF 2500-3000 boilers, 240V 550-143-071/0924...

  • Page 59: Ladder Diagram - Svf 2500-3000, 240V

    series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Ladder Diagram – SVF 2500-3000, 240V Figure 30 Ladder wiring diagram for SVF 2500-3000 boilers, 240V NOTICE See “Ladder Diagram Notes” on page 82 for important information Legend for Ladder Wiring Diagram Only.

  • Page 60: Schematic Diagram - Svf 2500-3000, 480V

    eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Schematic Diagram – SVF 2500-3000, 480V Figure 31 Schematic wiring diagram for SVF 2500-3000 boilers, 480V 550-143-071/0924...

  • Page 61: Ladder Diagram - Svf 2500-3000, 480V

    series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Ladder Diagram – SVF 2500-3000, 480V Figure 32 Ladder wiring diagram for SVF 2500-3000 boilers, 480V NOTICE See “Ladder Diagram Notes” on page 82 for important information Legend for Ladder Wiring Diagram Only.

  • Page 62: High Voltage (Tb2) Terminal Block Wiring - Svf 725/850

    eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) Terminal Block Wiring – SVF 725/850 A. Power Supply—REQUIRED • HOT L1 - Connect the hot lead of the 120 VAC, 60 Hz electrical service to the TB2-1 terminal •...
  • Page 63 series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) Terminal Block Wiring – SVF 725/850 (continued) D. Air Damper Interlock (Closure Switch) – As needed for systems • The Air Damper Interlock on TB2-13 and TB2-14 terminals allow for proof of open end limit switch START INTERLOCK #2 (Ext.
  • Page 64 eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) Terminal Block Wiring – SVF 725/850 (continued) F. Relay A, B, C, and D (120 VAC Pilot Duty Dry Contacts) – As needed for systems WARNING External power supplies are required for Relays A, B, C, and D.

  • Page 65: Low Voltage (Tb1) Terminal Block Wiring - Svf 725/850

    series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Low Voltage (TB1) Terminal Block Wiring – SVF 725/850 H. Enable/Disable (CH TT Input) – As needed for systems • Contact closure enables comfort heat operation Thermostat Device •...
  • Page 66 eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Low Voltage (TB1) Terminal Block Wiring – SVF 725/850 (continued) L. DHW Stat or Sensor – As needed for systems • TB1-9 and TB1-10 can be used to connect either an aquastat or remote DHW temperature sensor installed in a domestic hot water storage tank •...
  • Page 67 series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Low Voltage (TB1) Terminal Block Wiring – SVF 725/850 (continued) O. 4-20mA Analog Output – As needed for systems • TB1-15 and TB1-16 provide a 4-20mA analog output signal, which tracks the boiler’s firing rate.
  • Page 68 eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Low Voltage (TB1) Terminal Block Wiring – SVF 725/850 (continued) R. MODBUS Com A, B, and Shield – As needed for systems • TB1-22, TB1-23, and TB1-24 can be used to integrate the boiler with a Building Management System (BMS), Protocol Converter, or other device capable of RS-485 2-wire MODBUS...

  • Page 69: High Voltage (Tb2) Terminal Block Wiring - Svf 1000

    series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) Terminal Block Wiring – SVF 1000 A. Power Supply—REQUIRED • HOT L1 - Connect the hot lead of the 120 VAC, 60 Hz electrical service to the TB2-1 terminal •...
  • Page 70 eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) Terminal Block Wiring – SVF 1000 (continued) C. Auxiliary Inputs #1 and #2 – As needed for systems • Auxiliary Inputs #1 are on terminals TB2-12 and TB2-13 •...
  • Page 71 series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) Terminal Block Wiring – SVF 1000 (continued) F. Relays A, B, C, and D (120 VAC Pilot Duty Dry Contacts) – As needed for systems WARNING External power supplies are required for Relays A, B, C, and D.

  • Page 72: High Voltage (Tb2) Terminal Block Wiring - Svf 1500-2000

    eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) Terminal Block Wiring – SVF 1500-2000 A. Power Supply—REQUIRED • HOT L1 and L2 – Connect the hot leads of the 240 VAC, 60 Hz electrical services to the TB2-1 and TB2-2 terminals Service •...
  • Page 73 series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) Terminal Block Wiring – SVF 1500-2000 (continued) C. Auxiliary Inputs #1 and #2 – As needed for systems • Auxiliary Inputs #1 are on terminals TB2-11 and Aux Input Device TB2-12 •...
  • Page 74 eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) Terminal Block Wiring – SVF 1500-2000 (continued) F. Relays A, B, C, and D (120 VAC Pilot Duty Dry Contacts) – As needed for systems WARNING External power supplies are required for Relays A, B, C, and D.

  • Page 75: High Voltage (Tb2) And 3-Phase Terminal Block Wiring - Svf 2500-3000

    series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) and 3-Phase Terminal Block Wiring – SVF 2500-3000 A. Power Supply—REQUIRED • Line 1, Line 2, and Line 3 - Connect the hot leads 3-Phase of the 240 VAC or 480 VAC (depending on model), 240V &...
  • Page 76 eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) and 3-Phase Terminal Block Wiring – SVF 2500-3000 (continued) C. Auxiliary Inputs #1 and #2 – As needed for systems • Auxiliary Inputs #1 are on terminals TB2-7 and TB2-8 •...
  • Page 77 series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) High Voltage (TB2) and 3-Phase Terminal Block Wiring – SVF 2500-3000 (continued) F. Relays A, B, C, and D (120 VAC Pilot Duty Dry Contacts) – As needed for systems WARNING External power supplies are required for Relays A, B, C, and D.

  • Page 78: Low Voltage (Tb1) Terminal Block Wiring - Svf 1000-3000

    eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Low Voltage (TB1) Terminal Block Wiring – SVF 1000-3000 H. Enable/Disable (CH TT Input) – As needed for systems • Contact closure enables comfort heat operation Thermostat •...
  • Page 79 series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Low Voltage (TB1) Terminal Block Wiring – SVF 1000-3000 (continued) L. DHW Stat / Sensor – As needed for systems • TB1-9 and TB1-10 can be used to connect either an aquastat or remote DHW temperature sensor installed in a domestic hot water storage tank •...
  • Page 80 eleCTriCal series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Low Voltage (TB1) Terminal Block Wiring – SVF 1000-3000 (continued) O. 4-20mA Analog Output – As needed for systems • TB1-15 and TB1-16 provide a 4-20mA analog output signal, which tracks the boiler’s firing rate.
  • Page 81 series eleCTriCal 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Field Wiring (continued) Low Voltage (TB1) Terminal Block Wiring – SVF 1000-3000 (continued) R. MODBUS Com A, B, and Shield – As needed for systems • TB1-22, TB1-23, and TB1-24 can be used to integrate the boiler with a Building Management System (BMS), Protocol Converter, or other device capable of RS-485 2-wire MODBUS...
  • Page 82 2 If any of the original wire as supplied with the appliance must be replaced, use minimum 105°C wire or equivalent Exceptions: Ignition lead wire must be obtained from Weil-McLain only 3 Thermostat anticipator setting (single zone) - Set anticipator for 0 1 amps...

  • Page 83: Section 4 Operation

    SeCTion 4 Operation This section is intended to provide instructions for The combination combustion/temperature controller control setup and boiler startup procedures acts as a flame safeguard and provides firing rate control, blocked flue protection, outdoor air reset, Control Setup and Operation freeze protection, low flow protection, and much more.

  • Page 84: Control Setup

    operaTion series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Control Setup and Operation (continued) Control Setup or exceeds the Header Setpoint, the NURO control ® will command the boilers to decrease their firing rates, Set control parameters using the Wizard option again according to the PID settings Refer to SVF provided, or manually enter parameters using 725-3000 Advance Manual (Nuro Boiler Controller) for...
  • Page 85 series operaTion 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Control Setup and Operation (continued) Figure 33 Home Screen Figure 34 Show Cascade Info Figure 35 Master Cascade Information Screen Figure 36 Cascade Timers Figure 37 Show Member Screen Figure 38 Cascade Information Screen 550-143-071/0924...

  • Page 86: Additional Instructions

    operaTion series 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Additional Instructions For all additional instructions for startup, operation, and maintenance of the boiler, refer to the SVF 725/850 Boiler Manual (part number 550-100-290) or SVF 1000-3000 Boiler Manual (part number 550-100-255) 550-143-071/0924...
  • Page 87 series operaTion 1 / 1500-3000 Series 2 725/850, 1000 advanCed insTallaTion manual Notes 550-143-071/0924...
  • Page 88 WM Technologies, LLC 500 Blaine Street Michigan City, IN 46360-2388 weil-mclain.com...

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