Page 1 Series 2 80/110/150/199 Wall Mount Gas - Fired Condensing Boilers – Combi and Heating Only Models Boiler Manual • Installation • Maintenance • Startup • Parts Now With Built-In ® Bluetooth Capability This manual must only be used by a qualified heating installer/service technician. Read all instructions, including this manual and all other information shipped with the boiler, before installing.
Page 2: Table Of Contents
® series 2 gas-fired water boiler – boiler manual Contents The ECO Tec Gas-fired water boilers . . . . . . . . . . . . . . 3 DO NOT SERVICE THE BOILER Please read before proceeding .
Page 3: The Eco Tec Gas-Fired Water Boilers
® series 2 gas-fired water boiler – boiler manual Gas-fired water boilers 1. Stainless steel firetube heat exchanger 21. Air intake adapter (fits 3" PVC, 3" PP, and 3" SS) The corr osion resistant fire tube heat exchanger is our method of 22a. Electrical entrances (line voltage) transferring heat from the combustion chamber to the water. The bottom middle knockouts are designated for line voltage wiring 2. Heat exchanger cover plate/burner mounting plate only.
Page 4 ® series 2 gas-fired water boiler – boiler manual ECO Tec Heating Only Gas-fired water boilers (ECO Tec 80 model shown below) Part number 550-100-270/0122...
Page 5 ® series 2 gas-fired water boiler – boiler manual ECO Tec Combi Gas-fired water boilers (ECO Tec 80 model shown below) Part number 550-100-270/0122...
Page 6: Please Read Before Proceeding
See the instructions into contact with water, or was suspected to have come into contact at right. with water, replace the boiler with a new Weil-McLain boiler. Failure to adhere to the guidelines below can result in severe personal injury, death or substantial property damage SURGE PROTECTOR — EXPANSION TANK • Do not add cold water to a hot boiler.
Page 7: Boiler Location
3. Direct exhaust venting can be done with the approved Weil-McLain Direct 7. If new boiler will replace existing boiler, check for and Exhaust Kit, please see page 159 for kit information.
Page 8 ® series 2 gas-fired water boiler – boiler manual Boiler location (continued) Provide clearances for service Provide clearances from combustible access — RECOMMENDED materials — REQUIRED 1. See Figure 1 for recommended service clearances. 1. See Figure 2 for REQUIRED minimum clearances. ALL installation must provide at least these minimums.
Page 9: Prepare Boiler Location
® series 2 gas-fired water boiler – boiler manual Prepare boiler location Flooring and foundation Table 1 Boiler operating weights (with Kit option only) Flooring Heating Only Combi ECO Tec With the optional floor standing pedestal kit, the boiler is Boiler Without With Without With approved for installation on combustible flooring, but must never...
Page 10: Wall-Mounting The Boiler
® series 2 gas-fired water boiler – boiler manual Wall-mounting the boiler Wall-mounting requirements 6. Remove the mounting bracket and drill holes 1/4" diameter by 3 inches deep, centered on the screw slot DO NOT attempt to attach the wall mount bracket using outlines.
Page 11 ® series 2 gas-fired water boiler – boiler manual Wall-mounting the boiler Pedestal floor stand assembly (continued) Pedestal floor stand (with Kit option only) Figure 6 Boiler mounting bracket The boiler is heavy, and requires two people to lift and place upright. Use caution not to drop the boiler or cause bodily injury while lifting and handling.
Page 12: Boiler Hydrostatic Test
® series 2 gas-fired water boiler – boiler manual Boiler hydrostatic test Fill and pressure test DO NOT install a relief valve with a pressure higher than 50 PSIG . This is the maximum 1. See Figure 9, page 13 for use with the following instructions. allowable relief valve setting for the boiler. Failure to comply could prevent the relief valve from 2.
Page 13 ® series 2 gas-fired water boiler – boiler manual Boiler hydrostatic test (continued) Figure 8 Install pipe fittings for relief valve and pressure/ Figure 9 Install piping components required for hydrostatic test ( DO NOT mount relief valve temperature gauge — see legend below) until AFTER hydrostatic testing (see legend below) Recommended but not included (150/199 only)
Page 14: Gas Conversions
® series 2 gas-fired water boiler – boiler manual Gas conversions Natural Gas to Liquefied Petroleum (Propane) Prepare boiler for propane — conversion kits ECO Tec 80/110/150/199 (if required) ECO Tec 80/110 LP P/N 510-811-415 NG to Propane Gas Conversion Kit contents: Propane operation Venturi - Liquefied Petroleum (Propane) Gas Screw Pan Hd.
Page 15 ® series 2 gas-fired water boiler – boiler manual Gas conversions (continued) Liquefied Petroleum (Propane) to Natural Gas Figure 11 Natural gas venturi label identification conversion kits (White label) Part Number Venturi Boiler Type Ø ECO Tec 80/110 NG P/N 383-700-305 LP to Natural Gas Conversion Kit contents: Model 80/110 Venturi - Natural Gas...
Page 16 ® series 2 gas-fired water boiler – boiler manual Gas conversions (continued) Label wires before removing Figure 16 Venturi removed from blower Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. 7. Disconnect wire harness from gas valve. 8.
Page 17 ® series 2 gas-fired water boiler – boiler manual Gas conversions (continued) Adjust the offset regulating screw using the Do not check for gas leaks with an open flame — use following steps, referencing Figure 19: bubble test. Failure to use bubble test or check for gas leaks can cause severe personal injury, death or 1.
Page 18 ® series 2 gas-fired water boiler – boiler manual Gas conversions (continued) Apply installer conversion label is set to 10%. Adjust control settings if not at proper rate. Verify that boiler is operating at the expected firing rate at After installation is complete and boiler is set up for propane both high- and low-fire during combustion analysis.
Page 19: Gas Piping - Sizing Gas Lines
® series 2 gas-fired water boiler – boiler manual Gas piping — sizing gas lines Propane supply pressure Boiler gas connection is ½" NPT. Size gas lines large 1. Adjust propane supply regulator provided by gas supplier for enough to provide gas to all connected appliances. 14"...
Page 20: Venting/Air Piping - General
® series 2 gas-fired water boiler – boiler manual Venting/air piping — general 4. Place in operation the appliance being inspected. Follow Any improper operation of a common venting system should be the lighting instructions. Adjust thermostat so appliance corrected so the installation conforms with the National Fuel Gas will operate continuously.
Page 21 2 gas-fired water boiler – boiler manual Venting/air piping — general Venting with flexible polypropylene You must pipe combustion air to the boiler air intake unless using the Weil-McLain Direct Exhaust kit For boilers allowed to utilize polypropylene vent and meeting the Direct Exhaust requirements. systems.
Page 22 Maximum vent lengths apply for either 2" or 3" vent and air pipe. If using 2" pipe, provide 3"x 2" tapered reducers at boiler connections and at Weil-McLain vent/air cap or at concentric terminations. Boilers will derate as vent/air pipe length increases — see rating data on Figure 158, page 171 for derate amounts.
Page 23 Purchase bird screens separately from WM Technologies or vent kit supplier if not included. [Note — bird screening is integral to the 3" PVC Weil-McLain sidewall vent cap, available for purchase from WM Technologies. No additional screening is required.]...
Page 24: Commonwealth Of Massachusetts Installations
® series 2 gas-fired water boiler – boiler manual Commonwealth of Massachusetts installations Commonwealth of Massachusetts — When the boiler is installed within the Commonwealth of Massachusetts, the boiler must be installed by a licensed plumber or gas fitter. Read and comply with the instructions below. REQUIREMENTS: For all sidewall horizontally-vented INSPECTION...
Page 25: Vent Termination Requirements
® series 2 gas-fired water boiler – boiler manual Vent termination requirements Figure 28 The vent termination must be located to meet all requirements below (also applies to vertical vent terminations). The minimum distance from adjacent public walkways, adjacent buildings, open able windows and building in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or the Natural Gas and Propane Installation Code, CAN/CSA B149.1.
Page 26: Boiler Room Air Openings
® series 2 gas-fired water boiler – boiler manual Boiler room air openings Figure 29 Combustion and ventilation air openings for Direct Vent installations . Also follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54 – latest edition, and/or Natural Gas and Propane Installation Code, CAN/CSA B149.1 or applicable provisions of the local building codes.
Page 27: Vent And Air Piping And Boiler Connections
® series 2 gas-fired water boiler – boiler manual Vent and air piping and boiler connections Follow termination instructions Figure 30 Boiler vent and air connections Read and follow all instructions for the termination type used before proceeding with this page. Follow all instructions provided by vent pipe manufacturer.
Page 28: Direct Vent - Sidewall With Separate Pipes
® series 2 gas-fired water boiler – boiler manual DIRECT VENT — Sidewall with separate pipes Allowable vent/air pipe materials Figure 31 INSTALLATION SEQUENCE & lengths — Separate pipes sidewall Use only the vent materials and kits listed in Figure 27, page 23. Provide pipe adapters if specified. Locate the termination such that the total air piping and vent piping from the boiler to the termination will not exceed the maximum length given in...
Page 29 ® series 2 gas-fired water boiler – boiler manual DIRECT VENT — Sidewall with separate pipes (continued) See notices on previous page. Figure 32 Multiple terminations –– separate pipes –– clearance from vent of one air intake of the next Prepare wall penetrations 1.
Page 30: Direct Vent - Sidewall Concentric
® series 2 gas-fired water boiler – boiler manual DIRECT VENT — Sidewall concentric Allowable vent/air pipe materials & Figure 35 — Concentric horizontal INSTALLATION SEQUENCE lengths 1. The concentric termination kit must be purchased separately. Use only the vent materials and kits listed in Figure 27, page 23.
Page 31 ® series 2 gas-fired water boiler – boiler manual DIRECT VENT — Sidewall concentric (continued) See notices on previous page. Figure 36 Termination location — concentric termination — multiple boilers — clearance from vent of one to air intake of the next Install termination —...
Page 32: Direct Vent - Sidewall With W-M Vent/Air Plate
CSA B149.1 or B149.2 Installation Code and a Step 6 Prepare the sidewall penetrations and secure the sidewall plates as ULC S636 compliant vent kit. instructed in this section. See “Install Weil-McLain vent/air cap” on 3. The air inlet of a boiler is part of a direct vent page 33.
Page 33 Use the template to mark the locations for the four mounting holes, flue pipe and air pipe. Level the template with a level. For the Weil-McLain plate, the template must be level to ensure the flue and air pipe will be side-to-side, as shown in Figure 40.
Page 34: Direct Vent - Vertical With Separate Pipes
® series 2 gas-fired water boiler – boiler manual DIRECT VENT — Vertical with separate pipes Allowable vent/air pipe materials & Figure 42 Separate pipes vertical termination lengths Use only the vent materials and kits listed in Figure 27, page 23. Provide pipe adapters if specified. Locate the terminations such that the total air piping and vent piping from the boiler to the termination will not exceed the maximum length given in Figure 26, page 22.
Page 35 ® series 2 gas-fired water boiler – boiler manual DIRECT VENT — Vertical with separate pipes (continued) Figure 43 Terminations for multiple boilers See notices on previous page. Prepare roof penetrations 1. Air pipe penetration: a. Cut a hole for the air pipe. Size the air pipe hole as close as desired to the air pipe outside diameter.
Page 36: Direct Vent - Vertical Concentric
® series 2 gas-fired water boiler – boiler manual DIRECT VENT — Vertical concentric Allowable vent/air pipe materials & Figure 44 INSTALLATION SEQUENCE — Concentric vertical lengths 1. The concentric termination kit must be purchased separately. Use only the vent materials and kits listed in Figure 27, page 23.
Page 37 ® series 2 gas-fired water boiler – boiler manual DIRECT VENT — Vertical concentric (continued) Figure 45 Vertical termination — 3" PVC concentric — See notices on previous page. single or multiple boilers 2. Follow all local codes for isolation of vent pipe when passing through floors, ceilings and roofs.
Page 38: Direct Vent - Vertical Vent /Sidewall Air
® series 2 gas-fired water boiler – boiler manual DIRECT VENT — Vertical vent /sidewall air Allowable vent/air pipe materials & Figure 47 — Vertical vent/ INSTALLATION SEQUENCE lengths sidewall air Use only the vent materials and kits listed in Figure 27, page 23. Provide pipe adapters if specified.
Page 39 ® series 2 gas-fired water boiler – boiler manual DIRECT VENT — Vertical vent /sidewall air (continued) Determine location for air inlet elbow Figure 48 Vent termination (through the roof) for 1. The air inlet of an ECO Tec boiler is part of a direct vent direct vent: vertical vent / sidewall air connection.
Page 40: Direct Exhaust - Kit Option
2 gas-fired water boiler – boiler manual DIRECT Exhaust Kit Option Weil-Mclain's Direct Exhaust Kit must be used to field convert The sizing given in Figure 29, page 26 is based on the National the ECO Tec Boiler to a Direct Exhaust Boiler. All instructions Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest edition, allowing...
Page 41: Concentric Termination, Typical (Sidewall Or Vertical)
® series 2 gas-fired water boiler – boiler manual Concentric termination, typical (sidewall or vertical) LEGEND for Figure 50 Figure 50 PVC concentric termination assembly — DO NOT attach the rain cap until the termination has been 1 — Inner PVC pipe (vent) 4 — Bird screen inserted through the roof or wall and all supports have been installed.
Page 42: Install Boiler Water Piping
3. Use a low water cutoff designed for water installations. Electrode probe-type is recommended. Suggested maximum load per zone See Replacement parts for the Weil-McLain low water Copper pipe and Maximum recommended cut-off kit. When using kit, ensure extra wire length...
Page 43 ® series 2 gas-fired water boiler – boiler manual Install boiler water piping (continued) General Piping Information Figure 53 Head Loss through Boiler – Tables 4 and 5 Table 4 ECO Tec Heat Only Head Loss Through Boiler (Heat Only Unit) 80/110 HO 150 HO 199 HO 14.0 Flow Head Loss Head Loss...
Page 44 See page 53 for Weil-McLain’s circulation of the boiler water during the cooling cycle. DHW Service Valve Kit installation and Figure 145, page 159 for kit part number.
Page 45 ® series 2 gas-fired water boiler – boiler manual Install boiler water piping (continued) Recirculation (if used) Figure 54 Domestic Piping - Brazed Plate Heat Massachusetts code applications require Exchanger - Ports 2 and 4 recirculation piping or heat-traced piping if the distance from the water heater to the furthest fixture exceeds 100 feet.
Page 46 ® series 2 gas-fired water boiler – boiler manual Install boiler water piping (continued) Figure 55 Recirculation piping diagram (if used) Expansion tank (Figure 55, Item 10) THERMAL EXPANSION TANK — If a back flow preventer, check valve, or pressure reducing valve is piped on cold water inlet of water heater, you must install an expansion tank on cold water supply line to prevent normal thermal expansion from repeatedly forcing open the pressure relief valve.
Page 47: Direct Connect System Piping - Single Boiler System
® series 2 gas-fired water boiler – boiler manual Direct Connect System Piping Single Boiler System 80/110/150 Boilers only System water piping methods Use a primary/secondary piping layout if the total flow through the heat exchanger will be higher than the maximum. Direct connection piping to boiler Any system zoned with zone valves must include a It is recommended, but not required, to use primary/...
Page 48: Closed-Type Expansion Tank
® series 2 gas-fired water boiler – boiler manual Direct Connect System Piping Single Boiler System 80/110/150 Boilers only Closed-type expansion tank: Figure 56 Piping to diaphragm- (or bladder-) type DO NOT use a closed-type tank if expansion tank connecting to a water heater that is equipped with an automatic air vent or if an automatic air vent is incorporated into the system piping.
Page 49: Install Relief Valve
® series 2 gas-fired water boiler – boiler manual Direct Connect System Piping - Single Boiler System 80/110/150 Boilers only Install relief valve Figure 58 Piping to closed-type expansion tank 1. Install relief valve in a " street elbow along with a "...
Page 50: Zone Valve Zoning - Direct Connection
® series 2 gas-fired water boiler – boiler manual Direct Connect System Piping Single Boiler System (continued) 80/110/150 Boilers only ZONE VALVE zoning – direct connection ECO Tec Figure 59 80/110/150 Zone valve zoning direct (Shown with optional DHW piping) connection ( internal boiler circulator provides See Figure 59.
Page 51: Primary/Secondary System Piping - Single Boiler System
® series 2 gas-fired water boiler – boiler manual Primary/Secondary System Piping - Single Boiler System Expansion tank location Figure 60 Piping to diaphragm (or bladder) expansion tank Figure 60 and Figure 61 show typical installation of the system expansion tank. It is highly recommended that you locate the air separator and expansion tank as shown in the suggested piping drawings on pages 54-56.
Page 52: Install Relief Valve
® series 2 gas-fired water boiler – boiler manual Primary/Secondary System Piping Single Boiler System (continued) Correct all leaks in the system or tank piping. Leaks Install relief valve allow air to escape from the system and will cause 1. Install relief valve in a "...
Page 53: System Water Piping Methods
Boiler circulator 2. See separate instructions for the ECO Tec Easy Up Manifold weil-mclain.com for suggested guidelines to determine how The boiler circulator is factory-installed in the boiler as to use and setup.
Page 54: Zone Valve Zoning - Primary/Secondary
® series 2 gas-fired water boiler – boiler manual Primary/Secondary System Piping Single Boiler System (continued ZONE VALVE zoning – primary/secondary Figure 63 Zone valve zoning — primary/secondary See Figure 63. (Shown with optional DHW piping) connection — a system circulator is required 1.
Page 55: Circulator Zoning - Primary/Secondary
® series 2 gas-fired water boiler – boiler manual Primary/Secondary System piping (continued) Circulator zoning – primary/secondary Figure 64 Circulator zoning plus optional DHW piping (Shown with optional DHW piping) See Figure 64. 1. This configuration is for circulator-zoned systems using a boiler loop connected as a secondary circuit off of a primary system loop.
Page 56: Circulator Zoning - Multiple Temperature Zones With Primary/Secondary
® series 2 gas-fired water boiler – boiler manual Primary/Secondary System piping (continued) Circulator zoning – Multiple Figure 65 Circulator zoning with high- and low-temperature temperature zones with primary/ heating zones secondary (Shown with optional DHW piping) See Figure 65 1. This configuration is for circulator-zoned systems with high- and low-temperature heating zones using a boiler loop connected as a secondary circuit off of a primary system loop.
Page 57: Install Condensate Drain Line & Trap Assembly
Condensate from the boiler will be slightly acidic (typically with a pH from 3.2 to 4.5). Install a neutralizing filter when draining into metal pipe and if required by local codes. See Replacement parts at the end of this manual for the Weil-McLain kit. Part number 550-100-270/0122...
Page 58: Gas Piping
® series 2 gas-fired water boiler – boiler manual Gas piping when tightening gas Use two wrenches Boilers are shipped ready to operate on piping at boiler, using one wrench to prevent natural gas ONLY. You must install the propane the boiler gas line connection from turning.
Page 59 ® series 2 gas-fired water boiler – boiler manual Field wiring Wiring must be NEC Class 1. If original wiring as ELECTRICAL SHOCK HAZARD — supplied with boiler must be replaced, use only type For your safety, turn off electrical power 105 °C wire or equivalent. Boiler must be electrically supply at service entrance panel before grounded as required by National Electrical Code making any electrical connections to...
Page 60 ® series 2 gas-fired water boiler – boiler manual Field wiring (continued) 4. Low water cutoff harness should be routed from Figure 69 Field wiring overview - Line and low voltage location shown in Figure 51, page 42 to control module entrances connection shown in Section G, page 64. Provide strain relief and a seal at cabinet entry if mounted external of the cabinet.
Page 61 ® series 2 gas-fired water boiler – boiler manual Field wiring (see wiring diagram, Figure 70, page 68) (continued) Combi models use Input/Output pairs 1 and 4 for 3-way valve operation and cannot be used for any other purpose. Use Input 2 for Indirect DHW (if needed) and Input 3 for Space Heating applications. A. 120VAC Power Supply – REQUIRED Terminal Strip T1 1. Provide and install a properly-sized, fused disconnect or service switch as required by applicable codes. (15-amp for Determine total load most cases.) Boiler &...
Page 62 ® series 2 gas-fired water boiler – boiler manual Field wiring (see wiring diagram, Figure 70, page 68) (continued) Combi models use Input/Output pairs 1 and 4 for 3-way valve operation and cannot be used for any other purpose. Use Input 2 for Indirect DHW (if needed) and Input 3 for Space Heating applications. C. Inputs 1, 2, 3 and 4 (demands) – As needed for systems Connector J17 (Input 1, 2, &3) & Connector J16 (Input 4, 0-10VDC Input) 1. Input 1 – Connector J17 – 1, 2 & 3 (common) 2.
Page 63 ® series 2 gas-fired water boiler – boiler manual Field wiring (see wiring diagram, Figure 70, page 68) (continued) Combi models use Input/Output pairs 1 and 4 for 3-way valve operation and cannot be used for any other purpose. Use Input 2 for Indirect DHW (if needed) and Input 3 for Space Heating applications. D. System supply and return temperature sensors – Recommended when using primary secondary piping design. Connector J19 1. It is recommended to use two (2) strap-on temperature sensors (separate kit option).
Page 64 1. Install a low water cut-off (required) (see Figure 51, page 42). 2. Wiring Weil-McLain LWCO Kit: a. When possible, use the Weil-McLain Low water cut-off kit listed in the back of this manual. It includes a probe-type low water cut-off and provides a simple harness connection for the wiring.
Page 65 ® series 2 gas-fired water boiler – boiler manual Field wiring (see wiring diagram, Figure 70, page 68) (continued) Combi models use Input/Output pairs 1 and 4 for 3-way valve operation and cannot be used for any other purpose. Use Input 2 for Indirect DHW (if needed) and Input 3 for Space Heating applications. J. Proof of closure (flow switch and/or CAD) Jumper on Connector J18 1. A flow switch or combustion air damper (CAD) interlock can be configured by removing the jumper on connector J18 and wiring components as shown at right and in the wiring diagram (Figure 70, page 68).
Page 66 ® series 2 gas-fired water boiler – boiler manual Field wiring (see wiring diagram, Figure 70, page 68) (continued) Combi models use Input/Output pairs 1 and 4 for 3-way valve operation and cannot be used for any other purpose. Use Input 2 for Indirect DHW (if needed) and Input 3 for Space Heating applications. L. 0–10 VDC Remote MODULATION input – OPTIONAL Connector J16 #5 & #6 1. See illustration at right and Figure 70, page 68 for details. 2. This illustration also shows how to connect TT or end switch contacts at INPUT 3 and INPUT 4 for other uses.
Page 67 ® series 2 gas-fired water boiler – boiler manual Field wiring (see wiring diagram, Figure 70, page 68) (continued) Combi models use Input/Output pairs 1 and 4 for 3-way valve operation and cannot be used for any other purpose. Use Input 2 for Indirect DHW (if needed) and Input 3 for Space Heating applications. N. Multiple Boiler and the Modbus Connection Connector J12 1. The boiler control is capable of multiple boiler communication and can control up to eight (8) ECO Tec or Unity boilers in one installation.
Page 68: Wiring Diagram - Schematic
® series 2 gas-fired water boiler – boiler manual Wiring diagram — schematic Figure 70 Schematic wiring diagram (see Figure 71, page 70 for legend and notes) Part number 550-100-270/0122...
Page 69 ® series 2 gas-fired water boiler – boiler manual Wiring diagram — schematic (continued) Part number 550-100-270/0122...
Page 70: Wiring Diagram - Ladder
® series 2 gas-fired water boiler – boiler manual Wiring diagram — ladder Figure 71 Ladder wiring diagram (see Figure 70, page 68 for schematic wiring diagram) Part number 550-100-270/0122...
Page 71 ® series 2 gas-fired water boiler – boiler manual Wiring diagram — ladder (continued) Part number 550-100-270/0122...
Page 72: Zoning With The Eco Tec Control
® series 2 gas-fired water boiler – boiler manual Zoning with the ECO Tec Control Combi models use Input/Output pairs 1 and 4 for 3-way valve operation and cannot be used for any other purpose. Use Input 2 for Indirect DHW and Input 3 for Spacing Heating applications. A. Zoning with CIRCULATORS, suggested applications Four space heating zones (no Indirect DHW) (Heating Only models shown). 1. Review wiring information on page 61 (120VAC outputs) and page 62 (24VAC inputs).
Page 73 ® series 2 gas-fired water boiler – boiler manual Zoning with the ECO Tec Control (continued) Combi models use Input/Output pairs 1 and 4 for 3-way valve operation and cannot be used for any other purpose. Use Input 2 for Indirect DHW and Input 3 for Spacing Heating applications. B. Zoning with ZONE VALVES, suggested applications Two space heating zones (no Indirect DHW) (Heating Only models shown). 1. Review wiring information on page 61 (120VAC outputs) and page 62 (24VAC inputs).
Page 74: Eco Tec Control Operation
® series 2 gas-fired water boiler – boiler manual ECO Tec control operation ECO Tec Figure 72 Control sequence of operation control overview • Control inputs and outputs allow operation of multiple heating circuits (space heating and DHW, for example). Display Control action •...
Page 75 ® series 2 gas-fired water boiler – boiler manual ECO Tec control operation (continued) ‰ Advanced PI response to anticipate system needs. Setting Up the Boiler Flue temperature modifier to target temperature. ‰ Modulation based on flue sensor, Boiler out, and DHW sensors. ‰...
Page 76 ® series 2 gas-fired water boiler – boiler manual ECO Tec control operation (continued) ECO Tec control operation Figure 73 Outdoor reset operation The control responds to signals from: • DHW Flow demand (Combi models only). • DHW Temperature sensor (Combi models only). •...
Page 77 ® series 2 gas-fired water boiler – boiler manual ECO Tec control operation (continued) Figure 75 Boiler essential settings (REQUIRED on initial start-up) — see page 112 for explanation Screen branching options 1. Occurs when a control is powered up after being fully configured.
Page 78: Control Settings Menus
® series 2 gas-fired water boiler – boiler manual Control settings menus ECO Tec Figure 76 control display screens and typical navigation Keyboard: Appears when editing name of inputs/outputs and contractor information. Navigation controls Swipe: Slide finger left or right on the screen to navigate forward and backward on applicable screens. Press: Touch icons on screen to perform specified action.
Page 79: Express Setup - Example A
® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example A Multi- Zone SPACE HEATING (Circulators without circulator relays) | DHW (Direct-piped) LEGEND 14 Unions as needed ECO Tec boiler. for service. Indirect water heater, if 15 Return temperature used (domestic water sensor. piping not shown) — MUST be direct piped 16 Supply temperature to boiler to use default...
Page 80 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example A (continued) Figure 77 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. CONFIGURATION When powering up your boiler for the first time, this is the first screen to appear.
Page 81 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example A (continued) Figure 78 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. DATE/TIME This screen appears when DATE/TIME is selected on the previous DATE screen.
Page 82 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example A (continued) Figure 79 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. WIZARD (1 OF 16) WHAT IS THE USE OF INPUT/OUTPUT – 1? Select the usage of Input/Output -1.
Page 83 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example A (continued) Figure 80 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. WIZARD (5 OF 16) SYSTEM TYPE: DOMESTIC HOT WATER VOLTAGE FOR MAX TARGET: 10.0 VOLTAGE FOR MIN TARGET:...
Page 84 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example A (continued) Figure 81 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. WIZARD (9 OF 16) SYSTEM TYPE: FINNED TUBE BASEBOARD TARGET MODULATION SENSOR: SYSTEM SUPPLY This screen is the detailed settings for the system type chosen on the...
Page 85 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example A (continued) Figure 82 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. WIZARD (13 OF 16) WHAT IS THE USE OF INPUT/OUTPUT – 4? Select the usage of Input/Output-4.
Page 86 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example A (continued) Figure 83 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. STARTUP SCREEN BOILER MODEL ECO TEC 199 The STARTUP SCREEN is shown one more time to remind you of the sensor status and model number.
Page 87 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example A (continued) Figure 84 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. ECO TEC 199 PUMPS/AUX: STATUS: STANDBY ADDL HEAT DEMAND: DEMAND: OUTDOOR TEMP: 70°F...
Page 88 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example A (continued) Multi- Zone SPACE HEATING (Circulators without circulator relays) | DHW (Direct-piped) Control settings Bold italic - vAlue must be set or verified d — WiZArd Boiler Model, Altitude and Fuel Type are defAult AcceptAble chAnge only if desired in order of sequences...
Page 89: Express Setup - Example B
® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example B Combi Boiler Model, SPACE HEATING w/DHW (Circulators without circulator relays) LEGEND ECO Tec 14 Unions as needed boiler. for service. Indirect water heater, if 15 Return temperature used (domestic water sensor. piping not shown) — MUST be direct piped 16 Supply temperature sensor.
Page 90 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example B (continued) Figure 85 ECO Tec Control menu configuration screens Screens shown above are typical only. How - to Actual screens depend on control settings chosen. CONFIGURATION When powering up your boiler for the first time, this is the first screen to appear.
Page 91 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example B (continued) Figure 86 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. DATE/TIME This screen appears when DATE/TIME is selected on the previous DATE screen.
Page 92 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example B (continued) Figure 87 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. WIZARD (1 OF 14) Now begins the WIZARD. HELP is available throughout to offer further explanation if needed.
Page 93 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example B (continued) Figure 88 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. WIZARD (5 OF 14) WHAT SYSTEM TYPE IS PIPED TO OUTPUT – 2? FAN COIL Select the heat emitter type that is to receive heat from Input/Output-2.
Page 94 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example B (continued) Figure 89 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. WIZARD (9 OF 14) WHAT PRIORITY IS INPUT/OUTPUT - 3? PRIORITY 1 –...
Page 95 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example B (continued) Figure 90 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. WIZARD (13 OF 14) PRIORITY SWITCHING TIMES SUMMARY MAX ON TIME: 60 MINUTES This screen summarizes the maximum and minimum time each priority...
Page 96 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example B (continued) Figure 91 ECO Tec Control menu configuration screens (continued) Screens shown above are typical only. How - to Actual screens depend on control settings chosen. BLOWER CALIBRATION BEFORE BEGINNING BLOWER CALIBRATION, ENSURE VENT SYSTEM IS INSTALLED CORRECTLY AND BOILER IS FULLY ASSEMBLED.
Page 97 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example B (continued) Combi Boiler Model, SPACE HEATING w/DHW (Circulators without circulator relays) Control settings Bold italic - vAlue must be set or verified d — Boiler Model, Altitude and Fuel Type are critical WiZArd defAult AcceptAble chAnge only if desired in order of sequences settings.
Page 98: Express Setup - Example C
® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example C Multi-zone SPACE HEATING (Circulators with circulator relays) | DHW (Direct-piped) LEGEND 14 Unions as needed ECO Tec boiler. for service. Indirect water heater, if 15 Return temperature used (domestic water sensor. piping not shown) — MUST be direct piped 16 Supply temperature sensor.
Page 99 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example C (continued) Multi-zone SPACE HEATING (Circulators with circulator relays) | DHW (Direct-piped) Control settings Bold italic - vAlue must be set or verified d — Boiler Model, Altitude and Fuel Type are critical WiZArd defAult AcceptAble chAnge only if desired in order of sequences settings.
Page 100: Express Setup - Example D
® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example D Multi-zone SPACE HEATING (Zone valves) | DHW (Direct-piped) LEGEND 14 Unions as needed ECO Tec boiler. for service. Indirect water heater, if 15 Return temperature used (domestic water sensor. piping not shown) — MUST be direct piped 16 Supply temperature to boiler to use default...
Page 101 ® series 2 gas-fired water boiler – boiler manual EXPRESS SETUP — Example D (continued) Multi-zone SPACE HEATING (Zone valves) | DHW (Direct-piped) Control settings Bold italic - vAlue must be set or verified Boiler Model, Altitude and Fuel Type are critical d — WiZArd defAult AcceptAble chAnge only if desired in order of sequences settings. Failure to set correctly could result in severe personal injury, death or substantial property damage.
Page 102: Homeowner Navigation Menus
® series 2 gas-fired water boiler – boiler manual HOMEOWNER NAVIGATION menus Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 103: Bluetooth
® series 2 gas-fired water boiler – boiler manual HOMEOWNER NAVIGATION menus (continued) Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 104: Contractor Menus
® series 2 gas-fired water boiler – boiler manual CONTRACTOR menus Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 105: Boiler Settings Menus
® series 2 gas-fired water boiler – boiler manual BOILER SETTINGS menus Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 106: System Settings
® series 2 gas-fired water boiler – boiler manual System Settings Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 107: Boiler Priority Menus
® series 2 gas-fired water boiler – boiler manual Boiler PRIORITY menus Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 108 ® series 2 gas-fired water boiler – boiler manual Boiler PRIORITY menus (continued) Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 109 ® series 2 gas-fired water boiler – boiler manual Boiler PRIORITY menus (continued) Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 110 ® series 2 gas-fired water boiler – boiler manual Boiler PRIORITY menus (continued) Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 111 ® series 2 gas-fired water boiler – boiler manual Boiler PRIORITY menus (continued) Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 112: Available Control Settings And System Presets
® series 2 gas-fired water boiler – boiler manual Available control settings and system presets ECO Tec Figure 102 Control / Priority settings PRIORITY SETTINGS Range/ Default COMBI PARAMETER NAME UNITS options setting default 1, 2, 3, 4, 0-10V, FLOW FLOW • ASSIGNED INPUTS See System Type Presets COMBI DHW •...
Page 113 ® series 2 gas-fired water boiler – boiler manual Available control settings and system presets ECO Tec Figure 103 Control / Priority settings (continued) PRIORITY SETTINGS Range/ Default COMBI PARAMETER NAME UNITS options setting default 1 - 30 °F • ECO BOOST OFF DIFF (COMBI ONLY) YES, NO Yes (unchangeable) •...
Page 114: Configure Inputs And Outputs
® series 2 gas-fired water boiler – boiler manual Configure Inputs and Outputs Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 115: Aux Pump/Output
® series 2 gas-fired water boiler – boiler manual AUX Pump/Output Boiler Model, Altitude and Fuel Type are 1. Access contractor menus by pressing and holding the WM Logo for 7 seconds from the home screen. critical settings. Failure to set correctly could result in severe personal injury, death or substantial 2.
Page 116: Diagnostic Menu
® series 2 gas-fired water boiler – boiler manual DIAGNOSTIC menu Figure 108 DIAGNOSTICS menu Menu/Item Comment Temperatures Current operating status of the boiler. Prepurge, Ignition, Name of the system Type being satisfied, post purge, Status Warm Weather Shut down, Trouble Temperature of the first sensing element of the boiler’s heat exchanger outlet sensor Boiler Out1 Temperature of the second sensing element of the boiler’s heat exchanger outlet sensor...
Page 117 ® series 2 gas-fired water boiler – boiler manual DIAGNOSTICS menu (continued) Figure 109 DIAGNOSTICS menu (continued) Menu/Item Comment Run Times Burner Time Displays cumulative time the burner has been active (can be increased by user) Input 1 Time / DHW Time Displays cumulative time that Input 1 has been closed (Changes to DHW Time for Combi models).
Page 118: Service Menus
® series 2 gas-fired water boiler – boiler manual SERVICE menus Figure 110 SERVICE menus — navigation Comment Service Info Contractor name to appear in maintenance reminders and during lockouts Name Contractor phone number Phone Displays the boiler model selected in the boiler setup Model Enter the CP# of the boiler CP Number...
Page 119: Startup - Fill The System
® series 2 gas-fired water boiler – boiler manual Startup — fill the system Antifreeze and Correct Dosage Amount Clean system to remove sediment Use only antifreeze listed by WM Technologies as suitable for 1. The system must be thoroughly flushed (without boiler use with ECO Tec Gas Boilers.
Page 120 50% by volume application of the antifreeze products listed concentration of antifreeze. in this document only for use in Weil-McLain 7. Follow the instructions on the Sentinel test kit to sample the boilers. Do not apply these products or system water and verify inhibitor concentration.
Page 121: Startup - Final Checks
® series 2 gas-fired water boiler – boiler manual Startup — final checks Inspect/fill condensate system Check for gas leaks Inspect/check condensate lines and fittings Before starting the boiler, and during initial operation, Inspect the condensate drain line, condensate PVC fittings and use a leak detector or smell near the floor and around condensate trap.
Page 122 ® series 2 gas-fired water boiler – boiler manual Startup — final checks (continued) Check gas piping Final checks before starting boiler Check around the boiler and inside the boiler jacket for gas odor Read the instructions to adjust and set up the control. ‰...
Page 123 ® series 2 gas-fired water boiler – boiler manual Startup — final checks (continued) Figure 112 Operating instructions (WARNING -Verify that the control is set for the correct boiler model before proceeding.) Part number 550-100-270/0122...
Page 124 ® series 2 gas-fired water boiler – boiler manual Startup — final checks (continued) Gas Valve Adjustment If combustion at either high or low fire is outside the range given DO NOT attempt to adjust the throttle or offset screw in Figure 115, page 127, follow unless done by a qualified technician, and with the the procedure given on this page use of calibrated combustion test instruments.
Page 125 ® series 2 gas-fired water boiler – boiler manual Startup — final checks (continued) Re-check the Maximum and Minimum CO Figure 114 and CO rate Acceptable combustion values — measured values must be within the ranges given below 1. Turn off the boiler and then turn it back on and put in Test High fire Low fire Mode at maximum.
Page 126: Check-Out/Startup Verification
® series 2 gas-fired water boiler – boiler manual Startup — final checks (continued) Check Thermostatic Mixing Valve Operation temperature. More than one faucet maybe required for (Combi Model Only) steady modulation and outlet temperature. • Ensure an ASSE 1070 Thermostatic Mixing Valve is installed •...
Page 127: Annual Startup And General Maintenance
® series 2 gas-fired water boiler – boiler manual Annual startup and general maintenance Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the boiler. Failure to perform the service and maintenance could result in damage to the boiler or system.
Page 128: Annual Startup
® series 2 gas-fired water boiler – boiler manual Annual startup FIRST - YEAR SPECIAL INSPECTION HANDLING CERAMIC FIBER MATERIALS It is recommended that you obtain a Weil- REMOVING BURNER, COVER PLATE McLain Boiler Maintenance kit before attempting the first-year inspection, to ensure all parts that may be needed are COVER PLATE COMPONENTS available.
Page 129 ® series 2 gas-fired water boiler – boiler manual Annual startup (continued) Clean condensate trap The boiler should be inspected and 1. For cleaning condensate trap, see Figure 116. started annually, at the beginning of the 2. Remove pedestal front access panel to access the condensate heating season, only by a qualified service trap, if floor standing.
Page 130 ® series 2 gas-fired water boiler – boiler manual Annual startup (continued) • — welded gas tight with a Check air openings Diaphragm- or bladder-type rubber membrane to separate the tank pressurizing air 1. Verify that combustion and ventilation air openings to the and the water.
Page 131 ® series 2 gas-fired water boiler – boiler manual Annual startup (continued) Check ignition wiring Check flame signal 1. Check ignition cable electrical resistance. A good cable 1. Navigate to Diagnostics/Inputs on the control display will have resistance between 950 and 1050 ohms. Replace (see Figure ...
Page 132 ® series 2 gas-fired water boiler – boiler manual Annual startup (continued) Figure 118 Natural gas firing rates and corresponding blower speeds (low fire, ignition, and high fire) — for altitudes 2,000 feet (default settings) and high altitude (above 2,000 feet). up to Model Fuel...
Page 133 ® series 2 gas-fired water boiler – boiler manual Annual startup (continued) Figure 119 Propane gas firing rates and corresponding blower speeds (LP - low fire, ignition, and high fire) — for 2,000 feet (default settings) and high altitude (above 2,000 feet). altitudes up to Model Fuel...
Page 134 ® series 2 gas-fired water boiler – boiler manual Annual startup (continued) Check Inlet gas pressure Check blower speeds (continued) Check inlet gas pressure to limits on page 19 and at the gas inlet 8. Write down the blower RPM value. It should be within pressure test port shown in Figure 113, page 124.
Page 135 ® series 2 gas-fired water boiler – boiler manual Annual startup (continued) Check boiler relief valve Reinstall jacket door after 1. Inspect the relief valve and lift the lever to verify flow as servicing in the following warnings, excerpted from a relief valve manufacturer’s warning label.
Page 136: Troubleshooting
® series 2 gas-fired water boiler – boiler manual Troubleshooting VERIFY PROPER OPERATION AFTER SERVICING VERIFY PROPER OPERATION AFTER SERVICING BEFORE TROUBLESHOOTING — BEFORE TROUBLESHOOTING — Before calling for troubleshooting assistance, fill in the “ECO Tec Gas Data Collection 1. See Figure 120 for tools and kits recommended for troubleshooting S h e e t ”...
Page 137 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Check control fuses Figure 122 Control fuses ALWAYS check control fuses before replacing the control or any major components (blower, etc.). If one of these fuses is blown, it can prevent the control or other components from operating.
Page 138 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Make sure to determine the causes of outages. Do not leave the boiler operating without a complete diagnosis. Control fault indications 1. The control provides diagnostic 2. Figure 123 shows the screen behavior 3.
Page 139 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Figure 124 Troubleshooting suggestions — control Error Condition Log RESTART WIZARD The user must hold the button for a specified length of time. 2. Reset to Factory Default can be found on the BOILER SETTINGS menu, see Figure 94, page 104.
Page 140 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Figure 126 Troubleshooting suggestions — Fault displays, diagnostics and corrective actions Faults Display Condition Diagnostics Corrective Action(s) Nothing shown Control is not receiving 24V Check wiring for short circuit or Correct wiring per wiring diagram including connection of on display power.
Page 141 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Figure 127 Troubleshooting suggestions — Fault displays, diagnostics and corrective actions Faults Display Condition Diagnostics Corrective Action(s) Occurs if internal low water Manual reset of control if Check for low water condition in system. Repair system as necessary. LOW WTR CUTOFF OPEN cutoff contacts open.
Page 142 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Figure 128 Troubleshooting suggestions — Fault displays, diagnostics and corrective actions Faults Display Condition Diagnostics Corrective Action(s) Occurs if manual or Automatic external limit will Is there an external safety device connected? If yes, trouble shoot the LIMIT OPEN reset 2½...
Page 143 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Figure 129 Troubleshooting suggestions — Fault displays, diagnostics and corrective actions Faults Display Condition Diagnostics Corrective Action(s) Boiler went through 5 Automatically resets after 1 hour Check condensate trap for blockage allowing IGNITION 1 FAULT ignition attempts and never or can be reset by performing condensate to accumulate inside heat exchanger.
Page 144 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Figure 130 Troubleshooting suggestions — Fault displays, diagnostics and corrective actions Faults Display Condition Diagnostics Corrective Action(s) Configuration data in the Correct the invalid configuration Reconfirm all settings within the Control Settings screen. Configuration fault control safety micro does information.
Page 145 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Figure 131 Troubleshooting suggestions — Fault displays, diagnostics and corrective actions Faults Display Condition Diagnostics Corrective Action(s) Blower unable to reach Clears automatically after 1 hour. Check for loose or damaged wires on high voltage and Blower Fault 2 low voltage blower motor harnesses.
Page 146 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Figure 132 Troubleshooting suggestions — Fault displays, diagnostics and corrective actions Warnings Display Condition Diagnostics Corrective Action(s) Check all the temperature readings of the boiler on the Occurs when Supply Sensor Clears warning when a valid Supply Sensor DIAGNOSTICS - TEMPERATURES menu to determine if are chosen as the Target...
Page 147 ® series 2 gas-fired water boiler – boiler manual Troubleshooting (continued) Figure 133 Troubleshooting suggestions — Fault displays, diagnostics and corrective actions Warnings Display Condition Diagnostics Corrective Action(s) Outdoor temperature sensor Will automatically reset if the Determine which sensors are suspect and measure their Outdoor Sensor short or OPEN.
Page 148: Maintenance
® series 2 gas-fired water boiler – boiler manual Maintenance Cleaning the heat exchanger DO NOT SERVICE THE BOILER WATER SIDE, when required ECO Tec WITHOUT A MAINTENANCE 1. Isolate the boiler from the heating system. KIT AVAILABLE 2. Inspect the heating system water. If there is evidence of The maintenance kit includes components that may have sediment or corrosion, the boiler must be isolated from the system.
Page 149: Cleaning Heat Exchanger Flue Side
® series 2 gas-fired water boiler – boiler manual Cleaning heat exchanger flue side Cleaning the heat exchanger FLUE d. Disconnect the gas valve and gas flex line where it connects to venturi to by loosening the gas valve swivel nut to SIDE or accessing the burner, if disconnect gas valve from venturi.
Page 150 ® series 2 gas-fired water boiler – boiler manual Cleaning heat exchanger flue side (continued) Inspect and clean the burner Reinstall components 1. See Figure 134, page 151 and Figure 135, page 152 for reference. See Figure 135, page 152 part G. a. Slide the bottom cover plate insulation with integrated 2.
Page 151 ® series 2 gas-fired water boiler – boiler manual Cleaning heat exchanger flue side (continued) Legend for Figure 134 and Figure 135, page 152 the gas valve, gas line and swivel nut (Item 5) onto the venturi (Item 7) gas inlet. Inspect the gas valve flex Boiler interior, ( Display, circuit board and display bracket removed line, making sure there are no signs of wear or damage.
Page 152 ® series 2 gas-fired water boiler – boiler manual Cleaning heat exchanger flue side (continued) Figure 135 Accessing the burner , heat exchanger, blower assembly and venturi removal. (See Legend, page 151) . Part number 550-100-270/0122...
Page 153: Cleaning Dhw And Brazed Plate Heat Exchanger
® series 2 gas-fired water boiler – boiler manual Cleaning DHW and Brazed Plate Heat Exchanger Procedure for chemical cleaning of DHW circuit Hot Water Can Scald! Carefully read and follow the instructions contained. • Consumer Product Safety Commission and some states recommend domestic hot water temperature of 130°F Chemical cleaning and maintenance must be carried out by or less.
Page 154 ® series 2 gas-fired water boiler – boiler manual Cleaning DHW and Brazed Plate Heat Exchanger Actions for chemical cleaning Figure 137 Domestic water circuit cleaning diagram instructions of Domestic hot water circuit (Refer to Figure 137) 1. Shut down the boiler: a.
Page 155 ® series 2 gas-fired water boiler – boiler manual Cleaning DHW and Brazed Plate Heat Exchanger Before servicing Brazed Plate Heat Figure 139 Removal of brazed plate heat exchanger by Exchanger Assembly loosening the two (2) screws. 1. Cool down boiler and brazed plate heat exchanger assembly. The following procedure may be used to cool down boiler and components.
Page 156: Cleaning/Maintenance For Domestic Water Inlet & Outlet Manifolds
® series 2 gas-fired water boiler – boiler manual Cleaning/maintenance for Domestic Water Inlet & Outlet Manifolds Brazed plate heat exchanger Cleaning & Maintenance for Domestic reinstalled Water Inlet Manifold (Refer to Figure 141) 1. Follow “To turn off Gas Appliance” instructions on boiler and Four (4) new gaskets must be placed in Operating instructions and procedures 1-3 on page 155 "heat the DHW inlet and DHW return plate...
Page 157 ® series 2 gas-fired water boiler – boiler manual Cleaning/maintenance for Domestic Water Inlet & Outlet Manifolds 12. Open valves of the domestic cold water inlet and the domestic 10. Screw heating cartridge back into the Domestic Water Outlet hot water outlet. Flush water through system by opening a Manifold, and tighten it down to 8.9 lbs-ft +/- 1.0 lbs-ft.
Page 158: Replacement Parts
128 of this manual. Failure to comply could result in severe personal injury. Weil-McLain part numbers are found in this manual and in Weil-McLain Boilers and Controls Repair Parts Lists. REINSTALL Jacket door Inspect boiler jacket door gaskets on front of cabinet and reinstall boiler jacket door after start or servicing.
Page 159 Includes interior/exterior intake/exhaust plates, Centrotherm INNOFLUE VERTICAL 2" & 3" vent screens, templates & mounting hardware concentric vent/air kit Weil-McLain sidewall vent/air cap termination kit 383-500-397 2" polypropylene pipe ... . ICRT2439 for PVC vent and air pipes 3"...
Page 160 383-700-362 Pipe grommet seal (for 1-5/8 Seals condensate tube to bottom of cabinet " I.D. hole) Kit-Service Gasket Flue/Adapter (Quantity 2) 383-700-384 Kit-Service Cabinet Top 383-700-390 Kit-Service Cabinet Door Top 383-700-391 Kit-Service Water pipe bracket 383-700-393 Go to www.weil-mclain.com to locate WM Technologies distributors Part number 550-100-270/0122...
Page 161 ® series 2 gas-fired water boiler – boiler manual Replacement parts (continued) ECO Tec Figure 147 Jacket assembly — (see Figure 146, page 160 for part numbers) 80/110/150/199 Go to www.weil-mclain.com to locate WM Technologies distributors Part number 550-100-270/0122...
Page 162 Flue restrictor 383-700-364 — — 383-700-366 — — Top cover insulation & heat exchanger insulation wrap 383-700-367 — — — 383-700-368 — — — 383-700-326 — — Cover plate 383-700-327 — — — 383-700-328 — — — Go to www.weil-mclain.com to locate WM Technologies distributors Part number 550-100-270/0122...
Page 163 ® series 2 gas-fired water boiler – boiler manual Replacement parts (continued) ECO Tec Figure 149 Heat exchanger assembly (see Figure 148, page 162 for part numbers) 80/110/150/199 Go to www.weil-mclain.com to locate WM Technologies distributors Part number 550-100-270/0122...
Page 164 ® series 2 gas-fired water boiler – boiler manual Replacement parts (continued) ECO Tec Figure 150 Combustion components parts (see Figure 151, page 165 for illustration) 80/110/150/199 Model Model Model Item Name Part Number 80/110 Air silencer, clip and gasket 383-700-294 ECO Tec Kit-Service Gaskets/O-Ring (Includes: Silencer gasket, blower gasket, blower O-ring (80-150 boilers), blower O-ring (199 boiler), gas flex line to cabinet gasket, garlock 383-700-360...
Page 165 ® series 2 gas-fired water boiler – boiler manual Replacement parts (continued) ECO Tec Figure 151 Combustion components parts (see Figure 150, page 164 for part numbers) 80/110/150/199 Part number 550-100-270/0122...
Page 166 DHW out temp. sensor, b) boiler in temp. sensor, c) boiler out temp. sensor 383-700-319 Pipe - water flex 1" 383-700-378 Pipe - water return 383-700-375 Pipe - water return bottom With sensor tapping 383-700-376 Pipe - water supply bottom 383-700-374 Go to www.weil-mclain.com to locate WM Technologies distributors Part number 550-100-270/0122...
Page 167 ® series 2 gas-fired water boiler – boiler manual Replacement parts (continued) ECO Tec Figure 154 Combi and Heating Only water piping for 80/110/150/199 (see Figure 152, page 166 or Figure 153, page 166 for part numbers) Go to www.weil-mclain.com to locate WM Technologies distributors Part number 550-100-270/0122...
Page 168 Harness - Flow sensor (Combi only) (not shown) 383-700-354 Harness - Modbus wiring (not shown) 383-700-401 30 PSIG relief valve — shipped loose for field Relief valve 383-500-095 installation Shipped loose for field installation Pressure & temperature gauge 380-000-000 Go to www.weil-mclain.com to locate WM Technologies distributors Part number 550-100-270/0122...
Page 169 ® series 2 gas-fired water boiler – boiler manual Replacement parts (continued) ECO Tec Figure 156 Controls and electrical assemblies - (see Figure 155, page 168 for part numbers) 80/110 /150/199 Go to www.weil-mclain.com to locate WM Technologies distributors Part number 550-100-270/0122...
Page 170: Dimensions
® series 2 gas-fired water boiler – boiler manual Dimensions ECO Tec Figure 157 Dimensional data — 80/110/150/199 (all dimensions in inches) 1 Boiler Out tapping — 1" Male NPT 6 Gas connection 1/2" Male NPT 2 Boiler In tapping — 1" Male NPT 7 Condensate tube connection 3 Control display and navigation buttons 8 Air connection: 3"...
Page 171: Ratings - Eco Tec Boilers
® series 2 gas-fired water boiler – boiler manual Ratings – ECO Tec Boilers ECO Tec Figure 158 Ratings and engineering data — 80/110/150/199 AHRI Certified Ratings % Input derate vs vent length Vent/ (Values shown are at MAX Boiler Net Boiler Comb. Air vent/air pipe length — Model CSA Heating Seasonal Water Water Connection See Note 6)
Page 172 ® series 2 gas-fired water boiler – boiler manual Ratings — ECO Tec boilers (continued) ECO Tec Figure 159 Engineering Data — 80/110/150/199 boilers Vent/air pipe size: Electrical Shipping Operating Water Water flow rate service (Provide a weight weight content per boiler separate vent for required each boiler) Boiler Pounds Amps...
Page 173: Ratings - Fcc Statement Of Compliance
® series 2 gas-fired water boiler – boiler manual Ratings — FCC Statement of compliance Figure 161 FCC information Assembled From • This device complies with Part 15 of the FCC Rules. Operation is subject to the following tested components two conditions: (1) this device may not cause Complete system harmful interference, and (2) this device must not tested...
Page 174: Installation And Gas Boiler Data Collection Sheet
® series 2 gas-fired water boiler – boiler manual Installation and Gas Boiler Data Collection Sheet ECO Tec Boiler Model / Series __________ / Series _______ Date Installed: ___________________ CP Number: ________________ Fuel Type: Natural___ LP___ BTU Input: ____________ Flame signal on control display at HIGH fire: _________________ Flame signal on control display at LOW fire: ____________ Was venturi changed? YES___ NO___ Was gas valve throttle adjusted? YES___ NO___ Was gas valve offset adjusted? YES___ NO___...
Page 175 ® series 2 gas-fired water boiler – boiler manual Installation and Gas Boiler Data Collection Sheet CO2 @: High Fire ________ % Low Fire _________ % CO@: High Fire ________ ppm Low Fire _________ ppm Natural Gas / LP input rate measured: HIGH ______ CFH / LOW________ CFH Priority 2 Settings Priority 3 Settings System Type:...
Page 176 ® series 2 gas-fired water boiler – boiler manual ECO Tec Gas Boiler Data Collection Sheet Customer Info: Maintenance Info: Contact: Name: Contractor: Phone: Job name: Model: City, state: CP#: Distributor: Installed: Boiler/System Piping Details (Please Sketch) System Components: Near boiler pipe size: DHW tank (yes/no): DHW direct/system: DHW model: DHW pipe size: DHW circulator model:...
Page 177 ® series 2 gas-fired water boiler – boiler manual Lockout History #3 Outputs: Lockout History #4 Outputs: Fault Name: Output 1: Fault Name: Output 1: Fault Type: Fault Type: Output 2: Output 2: Fault Time: Output 3: Fault Time: Output 3: Fault Date: Output 4: Fault Date: Output 4: Status:...
Page 178 ® series 2 gas-fired water boiler – boiler manual NOTES Part number 550-100-270/0122...
Page 179 ® series 2 gas-fired water boiler – boiler manual NOTES Part number 550-100-270/0122...
Page 180 ® series 2 gas-fired water boiler – boiler manual WM Technologies, LLC 500 Blaine Street Michigan City, IN 46360-2388 weil-mclain.com...

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