Gas-fired hot water induced draft boilers (40 pages)
Summary of Contents for UTICA BOILERS UB95M-200
Page 1
UB95M-200 Gas-Fired Direct Vent Modulating Hot Water Boiler Model INSTALLATION, OPERATION & UB95M-200 MAINTENANCE MANUAL Manufactured by: ECR International, Inc. 2201 Dwyer Avenue, Utica NY 13501 An ISO 9001-2008 Certified Company P/N# 240006103U, Rev. D [03/2013] web site: www.ecrinternational.com...
3 - IMPORTANT SAFETY INFORMATION 3.1 General 3.2 Installation shall conform to requirements of Boiler installation shall be completed by qualifi ed agency. authority having jurisdiction or in absence of such See glossary for additional information. requirements: • United States WARNING •...
5 - BEFORE INSTALLING THE BOILER 5.1 Before Boiler Installation 5.2 Boiler Sizing • Verify you have selected boiler with proper capacity Boiler is equipped for residential installations. If before continuing installation. AHRI Rating of selected used for commercial applications, additional code boiler should be greater than or equal to calculated requirements must be adhered to for installation.
6 - LOCATING THE BOILER 6.1 Locating the Boiler TABLE 3: BOILER CLEARANCES Place crated boiler as close to selected location as Combustible Accessibility/ Dimension Service possible and un-crate boiler. Boiler may be moved into Construction Cleaning position with appliance dolly or 2 wheel hand truck. 1”...
6 - LOCATING THE BOILER 6.2 Combustion Air and Vent Pipe Requirements 6.4 Removal of Existing Boiler From Common Vent System • This boiler requires dedicated direct vent system. When an existing boiler is removed from a common • In direct vent system all air for combustion is taken venting system, the common venting system is likely to be directly from outside atmosphere, and all fl...
7 - NEAR BOILER PIPING 7.1 Clean System First 7.2 Supply & Return Lines Before connecting boiler to heating system, clean and fl ush See Appendix A for piping examples. system thoroughly. Verify system is free of sediment, fl ux •...
Page 10
7 - NEAR BOILER PIPING 7.3 Safety Relief Valve / Temperature Pressure Gauge Figure 2 - Safety Relief Valve Discharge Piping WARNING Safety Relief Valve Burn and scald hazard. Safety relief valve could discharge steam or hot water during operation. Install discharge piping per these instructions.
7 - NEAR BOILER PIPING 7.5 Condensate Drain Piping 7.7 Chilled Water Piping Boiler is factory equipped with a condensate trap. Install Boiler, when used in connection with refrigeration Additional trap is not required and should NOT be used. system, so chiller medium is piped in parallel with boiler with appropriate valves to prevent chilled medium from •...
8 - COMBUSTION AIR AND VENT PIPE 8.1 Connections And Termination Maximum Allowable Temperatures Boilers for connection to gas vents or chimneys, vent TABLE 4 Of Typical Non-Metallic Vent Material installations shall be in accordance with “Venting of Equipment” of the National Fuel Gas Code, ANSI Z223.1/ Standard Material °F...
Page 13
8 - COMBUSTION AIR AND VENT PIPE F. Terminate vent above normal snow-line. Avoid locations Figure 4 - Combustion Air & Vent Piping where snow may drift and block vent. Ice or snow may cause boiler to shut down if vent becomes obstructed. FIELD INSTALL 2”...
Page 14
8 - COMBUSTION AIR AND VENT PIPE Figure 5 - Side Wall Vent / Intake terminations - Less Than 12” Clearance Above Grade...
Page 15
8 - COMBUSTION AIR AND VENT PIPE Figure 6 -Roof Vent / Intake Terminations Figure 7 - Concentric Vent Terminations 1" (26mm) Roof Overhang Maximum 1" (26mm) Maximum 12" (300mm) Minimum * See Note 36"(915mm) Minimum Below Maintain 12"(300mm) Vent clearance above highest anticipated snow level or Combustion...
Page 16
8 - COMBUSTION AIR AND VENT PIPE 8.3 Installation Figure 8 - Concentric Vent w/ Dimensions When transitioning from CPVC to PVC use Weld-On CPVC 724 or other cement approved for CPVC to PVC. In Canada ULC S636 approved cement must be used. Recommend all pipes be cut, prepared, and pre- assembled before permanently cementing any joint.
9 - GAS SUPPLY PIPING 9.2 Connecting Gas Piping CAUTION WHAT TO DO IF YOU SMELL GAS Boiler is equipped with ½” NPT connection on gas valve for supply piping and ½” NPT ball valve for manual shut off. • Do not try to light any appliance. Following rules apply: •...
Page 18
9 - GAS SUPPLY PIPING DANGER Figure 10 - Gas Piping Fire Hazard. Do not use matches, candles, open fl ames, or other methods providing ignition source. Failure to comply will result in death or serious injury. 9.3 Leak Check Gas Piping After making gas connections, open manual shutoff valve(s) and check all gas connections for leaks before placing boiler in operation.
10 - ELECTRICAL WIRING WARNING Figure 11 - Line Voltage Monitor Electrical shock hazard. Turn OFF electrical power supply at service panel before making electrical connections. Failure to do so could result in death or serious injury. 10.1 Codes Electrically bond boiler to ground in accordance with requirements of authority having jurisdiction.
Page 20
10 - ELECTRICAL WIRING 10.6 Thermostat AVOID THE FOLLOWING Connect room thermostat or end switch (isolated Corners contact only) between terminals T1 and T2. Dead Spots Alcoves Install thermostat on inside wall away from infl uences of drafts, hot or cold water pipes, lighting fi xtures, Behind doors televisions, sun rays, or fi...
11 - CONTROLS AND ACCESSORIES Refer to Repair Parts Manual for illustrations, and Control • Gas controls perform all functions required to safely Manual and Troubleshooting Guide for detailed sequence of regulate gas fl ow to main burner of boiler. operation and troubleshooting guide.
11 - CONTROLS AND ACCESSORIES • High limit control is mounted in ½” NPT control well 11.15 Blocked Vent Safety Assembly and ¾” X ½” bushing on top of front boiler section at Blocked vent safety assembly incorporates two pressure hot water outlet.
12 - BOILER STARTUP Water Treatment And Freeze Protection - See Systems With Conventional Closed Type Expansion Tanks Appendix B A. Close all zone service valves on supply and return piping and close expansion tank service valve. 12.1 Filling Boiler With Water And Purging Air Drain expansion tank.
13 - OPERATING INSTRUCTIONS CAUTION WHAT TO DO IF YOU SMELL GAS WARNING • Do not try to light any appliance. If you do not follow these instructions • Do not touch any electrical switches; do not use exactly, a fi re or explosion may result any phone in your building.
14 - MAINTENANCE AND CLEANING Acidic nature of fl ue gases condensing on aluminum boiler 14.2 Daily During Heating Season sections cause formation of aluminum oxide. This oxide Check for and remove any obstruction to fl ow of formation is normal, and represents negligible mass of combustion air or venting of fl...
Page 26
14 - MAINTENANCE AND CLEANING G. Aluminum oxide deposits are water soluble and WARNING may be rinsed away by inserting hose into burner Following service procedures must be performed by opening of casting and slowly run water through qualifi ed service agent. Boiler owner shall not attempt fl...
APPENDIX A - BOILER PIPING AND WIRING Electrical Wiring Diagram...
Page 28
APPENDIX A - BOILER PIPING AND WIRING Boiler Control Wiring Diagram: Single Zone System With Domestic Hot Water Priority BOILER CONTROL PANEL CH T1 120 VAC T-STAT CH T2 CH C1 DHW T1 CH C2 DHW T2 DHW C1 DHW C2 CIRC OUTDOOR AIR SENSOR...
Page 29
APPENDIX A - BOILER PIPING AND WIRING Piping Diagram 1: Single Zone System With Domestic Hot Water Priority NOTE: NOT RECOMMENDED FOR ANTIFREEZE APPLICATIONS Wiring Diagram 1 : Single Zone System With Domestic Hot Water Priority Hotline indirect water heater aquastat or thermostat Boiler Control Panel T-STAT...
Page 30
APPENDIX A - BOILER PIPING AND WIRING Piping Diagram 2 : Multizone Piping With Zone Valves And Domestic Hot Water Priority (With Zone Valve) NOTE: NOT RECOMMENDED FOR ANTIFREEZE APPLICATIONS...
Page 31
APPENDIX A - BOILER PIPING AND WIRING Wiring Diagram 2: Multizone Wiring With Zone Valves And Domestic Hot Water Priority (With Zone Valve) SWITCH LEGEND INDIRECT WATER TANK HEATER AQUASTAT CONTROL OR THERMOSTAT T-STAT T-STAT ARGO AZ-4CUP CONTROL Yellow 24VAC Yellow STATUS PRIORITY ON...
Page 32
APPENDIX A - BOILER PIPING AND WIRING Piping Diagram 3 : Multizone System With Zone Valves And Domestic Hot Water Priority (With Circulator) NOTE: NOT RECOMMENDED FOR ANTIFREEZE APPLICATIONS...
Page 33
APPENDIX A - BOILER PIPING AND WIRING SWITCH LEGEND INDIRECT WATER TANK HEATER AQUASTAT CONTROL OR THERMOSTAT T-STAT T-STAT ARGO AZ-4CP CONTROL Yellow 24VAC Yellow STATUS PRIORITY ON PRIMARY PUMP PRIORITY PUMP ZONE VALVE/PUMP X-X CONTACT ZR ON PRIORITY ZC ON ZR-ZC Black DPM-2...
Page 34
APPENDIX A - BOILER PIPING AND WIRING Piping Diagram 4: Multizone System With Circulators And Domestic Hot Water Priority NOTE: NOT RECOMMENDED FOR ANTIFREEZE APPLICATIONS...
Page 35
APPENDIX A - BOILER PIPING AND WIRING Wiring Diagram 4: Multizone System With Circulators And Domestic Hot Water Priority Hotline indirect water heater aquastat or thermostat NOTE: IN PLACE OF 115 T-STAT VOLT ISOLATION RELAY, T-STAT OPTIONAL CONTROL T-STAT ARGO AR822II THERMOSTATS TERMINAL 5 &...
Page 36
APPENDIX A - BOILER PIPING AND WIRING Piping Diagram 5 : Primary/Secondary Piping With Circulators And Domestic Hot Water Piping Diagram 5 Piping Diagram 5 *SEE NOTE NOTE: RECOMMENDED FOR ANTIFREEZE APPLICATIONS...
Page 37
APPENDIX A - BOILER PIPING AND WIRING Wiring Diagram 5 : Primary/Secondary Wiring With Circulators And Domestic Hot Water INDIRECT HOT WATER HEATER AQUASTAT OR THERMOSTAT NOTE: IN PLACE OF 115 VOLT ISOLATION RELAY, OPTIONAL CONTROL ARGO AR822II TERMINAL 5 & 6 N.O. TO DHW T1 &...
Page 38
APPENDIX A - BOILER PIPING AND WIRING Piping Diagram 6 : Primary/Secondary Multizone System Piping With Zone Valves And Domestic Hot Water (With Zone Valve) *SEE NOTE NOTE: RECOMMENDED FOR ANTIFREEZE APPLICATIONS...
Page 39
APPENDIX A - BOILER PIPING AND WIRING Wiring Diagram 6 : Primary/Secondary Multizone System Wiring With Zone Valves And Domestic Hot Water (With Zone Valve) INDIRECT WATER SWITCH LEGEND TANK HEATER AQUASTAT CONTROL OR THERMOSTAT T-STAT T-STAT ARGO AZ-4CP CONTROL Yellow Yellow STATUS...
Page 40
APPENDIX A - BOILER PIPING AND WIRING Piping Diagram 7 : Primary/Secondary Piping With Zone Valves And Domestic Hot Water (With Circulator) *SEE NOTE NOTE: RECOMMENDED FOR ANTIFREEZE APPLICATIONS...
Page 41
APPENDIX A - BOILER PIPING AND WIRING Wiring Diagram 7 : Primary/Secondary Piping With Zone Valves And Domestic Hot Water (With Circulator) INDIRECT WATER HEATER AQUASTAT SWITCH LEGEND TANK OR THERMOSTAT CONTROL T-STAT T-STAT ARGO AZ-4CP CONTROL Yellow Yellow STATUS PRIORITY ON PRIMARY PUMP PRIORITY PUMP...
Page 42
APPENDIX A - BOILER PIPING AND WIRING Piping Diagram 8 : Bypass Piping (Automatic Mixing Valve) FROM SYSTEM TO SYSTEM WATER INLET EXPANSION TANK BOILER ALTERNATE CIRCULATOR LOCATION Piping Diagram 9 : Bypass Piping (Fixed Low Temp Only) FROM SYSTEM TO SYSTEM SYSTEM CIRCULATOR...
Page 43
APPENDIX A - BOILER PIPING AND WIRING Piping Diagram 10 : Bypass Piping (4-Way Valve Option With Circulator On Supply) TO SYSTEM FROM SYSTEM WATER INLET EXPANSION TANK BOILER ALTERNATE CIRCULATOR LOCATION Piping Diagram 11 : Multiple Boiler Piping TO SYSTEM FROM SYSTEM 12”...
Page 44
APPENDIX A - BOILER PIPING AND WIRING Wiring Diagram 9: Multiple Boiler Wiring (AMB-4) AMB-4 WATER SENSOR OUTSIDE SENSOR IF USING EXTERNAL DAY/NIGHT FEATURE CONNECT HERE (DRY CONTACT) IF USING REQ/ACK CONNECT HERE (TT/THERMOSTAT DRY CONTACT) TO PRIORITY IF USING (DRY CONTACT) CH T1 CH T2...
APPENDIX B - WATER QUALITY, WATER TREATMENT AND FREEZE PROTECTION WARNING Install boiler so gas ignition system components are protected from water (dripping, spraying, rain, etc) during appliance operation and service (circulator replacement, etc). • DIELECTRIC ISOLATION Two (2) 1-1/4” X 1-1/4” Female to female dielectric isolation unions are shipped loose in boiler parts bag.
Page 46
APPENDIX B - WATER QUALITY, WATER TREATMENT AND FREEZE PROTECTION System and Operating Precautions Applies to ALL Aluminum High Effi ciency Gas-Fired Water Boilers Clean System First Eliminate System Leaks BEFORE connecting boiler to heating system, clean and Continuous addition of make-up water will constantly add fl...
Page 47
APPENDIX B - WATER QUALITY, WATER TREATMENT AND FREEZE PROTECTION System and Operating Precautions Applies to ALL Aluminum High Effi ciency Gas-Fired Water Boilers General Guidelines When Using Antifreeze • Use only antifreeze products recommended • It is recommended that pH reading be taken for use with aluminum boilers, as listed in annually, and adjusted as necessary.
Page 48
APPENDIX B - WATER QUALITY, WATER TREATMENT AND FREEZE PROTECTION System and Operating Precautions Applies to ALL Aluminum High Effi ciency Gas-Fired Water Boilers Antifreeze Products Table 1 Compatible Aluminum Antifreeze & Inhibitor Suppliers Noble Company P. O. Box 350 Grand Haven, MI 49417 Noburst AL Antifreeze www.noblecompany.com...