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GMGS
Cast Iron
Steam
Gas Fired
Boilers
INSTALLATION, OPERATION & MAINTENANCE MANUAL
Models
GMGS075E
GMGS225E
GMGS112E
GMGS262E
GMGS150E
GMGS299E
GMGS187E
Manufactured by:
ECR International Inc.
2201 Dwyer Avenue, Utica, NY 13501
Tel. 800 253 7900
www.ecrinternational.com
PN 240009192 REV. L [04/30/2019]
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Table of Contents
Related Manuals for Green Mountain GMGS
Summary of Contents for Green Mountain GMGS
- Page 1 GMGS Cast Iron Steam Gas Fired Boilers INSTALLATION, OPERATION & MAINTENANCE MANUAL Models GMGS075E GMGS225E GMGS112E GMGS262E GMGS150E GMGS299E GMGS187E Manufactured by: ECR International Inc. 2201 Dwyer Avenue, Utica, NY 13501 Tel. 800 253 7900 www.ecrinternational.com PN 240009192 REV. L [04/30/2019]...
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Page 2: Dimensions
DIMENSIONS Figure 1 - Dimensions *Vent Damper Pressure ASME 26.50" Gauge Relief Pressure Valve Limit 4.75" Control Spill Switch Water Line Transformer 2.5 OD Glass Gauge Low Water 2.5 OD 36.375" Cutoff Probe Low Water Cutoff 29" 24.00" Rollout CG400 Switch 12.25"... -
Page 3: Ratings And Capacity
RATINGS AND CAPACITY Table 1 - Ratings and Capacities BOILER MODEL †Natural Gas NUMBER No. of Sec. Intermittent Heating Input Net AHRI Net AHRI Rating Ignition w/Vent Fuel Type Capacity AFUE(%) *MBTUH Rating *Mbh Sq. Ft. Radiation Damper *MBTUH GMGS075E Natural Gas 82.7 GMGS112E... -
Page 4: Table Of Contents
TABLE OF CONTENTS Introduction Dimensions ..........2 Boiler is designed for use in closed heating systems where Ratings and Capacity ........3 all steam is returned as condensate and make-up water is Important Safety Information ....... 5 minimal. Boiler is not designed for or intended for use in open systems using 100% make-up water. -
Page 5: Important Safety Information
IMPORTANT SAFETY INFORMATION General WARNING Boiler and venting installation shall be completed by Installing or venting a boiler or any other gas qualified agency. appliance with improper methods or materials could result in death or serious injury due to fire or to WARNING asphyxiation from poisonous gases such as carbon Fire, explosion, asphyxiation and electrical shock... - Page 6 IMPORTANT SAFETY INFORMATION FOR YOUR SAFETY READ BEFORE OPERATING Water 1st Degree Burn 2nd and 3rd Degree Burn Temperature Exposure Time For Exposure Time For An DANGER Setting An Adult Adult 120° F 1 minute 5 minutes 130° F 5 seconds 30 seconds 140°...
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Page 7: Locating The Boiler
LOCATING THE BOILER Locating the Boiler Select level location as centralized with piping system, Table 2 - and as near chimney as possible. Minimum Clearance Dimensions 6" Place crated boiler at selected location. Remove all crate material. Please recycle responsibly. Rear 6"... -
Page 8: System Piping
SYSTEM PIPING • Do not install shutoff valve between boiler and safety WARNING valve. Burn and scald hazard. Safety relief valve could • Install union, if used, close to safety relief valve outlet. discharge steam or hot water during operation. •... - Page 9 SYSTEM PIPING Consider near boiler piping as part of the boiler for proper For gravity return systems, the bottom of the lowest water level control and to produce dry steam. steam carrying pipe, be it a dry return, or the end of the steam main, must be at least 28”...
- Page 10 SYSTEM PIPING [3 & 4 Section Sizes] Figure 3 - Recommended Near Boiler Piping Using One Supply Tapping 2 1/2” TEE WITH PLUG FOR SKIMMING PN 240009192, Rev. L [04/30/2019]...
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Page 11: Installation - System Piping
INSTALLATION - SYSTEM PIPING Figure 4 - Recommended Near Boiler Piping Using Two Supply Tappings [5 and 9 Sections] 28” MIN. DIMENSION A 2 1/2” TEE WITH PLUG FOR SKIMMING Figure 5 - Chilled Water Piping VALVES A & B OPEN FOR HEATING; CLOSE FOR COOLING VALVES C &... -
Page 12: Fresh Air For Combustion
FRESH AIR FOR COMBUSTION WARNING C. Known Air Infiltration Rate. See Table 3 for space with boiler only. Use equation for multiple Air openings to combustion area must not be appliances. Do not use an air infiltration rate air obstructed. Follow instructions below, to maintain changes per hour (ACH) greater than 0.60. -
Page 13: Chimney And Vent Pipe Connection
CHIMNEY AND VENT PIPE CONNECTION End of vent pipe must be flush with inside face of WARNING chimney flue. Use sealed-in thimble for chimney Installing or venting a boiler or any other gas connection. appliance with improper methods or materials could Horizontal run should be as short as possible, but not result in death or serious injury due to fire or to longer than 3/4 the chimney height (HT) Figure 6, page... - Page 14 CHIMNEY AND VENT PIPE CONNECTION summer exhaust fan. Close fireplace dampers. Figure 6 - Typical Masonry Chimney Place in operation the appliance being inspected. Follow Requirements the lighting instructions. Adjust thermostat so appliance will operate continuously. Test for spillage at the draft hood relief opening after 2 FT (610mm) MIN.
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Page 15: Vent Damper Operation
VENT DAMPER OPERATION WARNING Figure 7 - Horizontal Installation Asphyxiation or burn hazard. Improper installation Horizontal Installation and operation of vent damper could result in serious Flow injury or death due to fire or to asphyxiation from poisonous gases such as carbon monoxide which is To Boiler Vent Damper o Chimney... -
Page 16: Gas Supply Piping
GAS SUPPLY PIPING Propane Installation CAUTION WARNING WHAT TO DO IF YOU SMELL GAS Fire, explosion, asphyxiation hazard. Verify boiler • Do not try to light any appliance. is equipped with propane gas orifices and gas valve • Do not touch any electrical switch; do not use is configured for propane. -
Page 17: Electrical Wiring
ELECTRICAL WIRING Electronic Thermostats WARNING A. Some electronic thermostats may lose their Electrical shock hazard. Turn OFF electrical power memory or shut down. With probe type low water supply at service panel before making electrical cutoff, this may occur each time low water cutoff connections. -
Page 18: Operating Instructions
OPERATING INSTRUCTIONS STOP! Read the safety information on this page. WARNING Set the thermostat to lowest setting. If you do not follow these instructions Turn off all electric power to the appliance. exactly, a fire or explosion may result This appliance is equipped with an ignition device which causing property damage, personal injury automatically lights the pilot. -
Page 19: Operating Your Boiler
OPERATING YOUR BOILER Thermostat WARNING A. Set thermostat to desired room temperature. Burn Hazard. Never run water into a hot empty B. Set thermostat to lower setting if heat is not boiler. Failure to follow these instructions could required result in death or serious injury. C. -
Page 20: Checking And Adjusting
CHECKING AND ADJUSTING Adjust Pilot Burner Figure 14 - Igniter Pilot flame should surround 3/8” to 1/2” of pilot sensor. See Figure 14. To adjust Flame. Remove screw cover over pilot adjusting screw. See Figure 14. Insert small screwdriver and adjust flame as needed. Turn screw counterclockwise to increase flame, clock- wise to decrease. - Page 21 CHECKING AND ADJUSTING Adjust Steam Pressure Control Boiler Equipped With Optional WF-2U-24 Water Feeder • Steam pressure limit control (pressuretrol) shuts E. Continue thermostat call for heat after low water off gas to main burners when steam pressure in cut off recognizes low water condition. boiler reaches cut-off setpoint (i.e.
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Page 22: Start-Up Cleaning
START-UP CLEANING • Maintain at least 180°F for 15 minutes to remove WARNING dissolved gasses from fresh water. Following service procedures must be performed • Shut off burners. by qualified service agent. Boiler owner shall not Allow system to operate for one week to give majority attempt these steps. -
Page 23: General Maintenance
GENERAL MAINTENANCE Low Water Cut-Off Boiler Water Treatment Other Than Cleaners Low Water Cut-Off interrupts electrical current to burner In steam systems where system is tight, free from leaks, when water line in boiler drops to low level. and all steam is returned to boiler as condensate, amount of make up water is small. -
Page 24: Service Hints
SERVICE HINTS You may avoid inconvenience and service calls by checking these points before you call for service. CAUTION WHAT TO DO IF YOU SMELL GAS • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. -
Page 25: Wiring Diagrams
WIRING DIAGRAMS Figure 16 - Wiring Diagrams For Boilers With CG400 Probe Type Low Water Cut-Off Shown CG400 Terminals PS802 To CG400 Cross Reference PS802 CG400 If any of the original wire as supplied with this appliance must be replaced, it must be replaced with type 105°C Thermoplastic wire or its equivalent. PN 240009192, Rev. - Page 26 WIRING DIAGRAMS Figure 17 - Wiring Diagrams For Boilers With 67D-1 Float Type Low Water Cut-Off If any of the original wire as supplied with this appliance must be replaced, it must be replaced with type 105°C Thermoplastic wire or its equivalent. PN 240009192, Rev.
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Page 27: Controls And Accessories
CONTROLS AND ACCESSORIES SAFETY VALVE WATER FEEDER (Optional) Safety valve is designed to open automatically if boiler steam Model WF-2U-24 water feeder maybe used with either pressure exceeds pressure rating of valve (15 psig). Should of the low water cutoffs listed. Water feeder maintains it fail to open under this condition, shut down your boiler. -
Page 28: Appendix A - Vent Damper
APPENDIX A - VENT DAMPER A.1 Vent Damper Harness - Molex Plugs • If boiler ignites: Go to section B.2 "Vent Damper Troubleshooting Guide". WARNING NOTE: Prior to replacing the damper, be sure the Do Not negate the action of any existing safety problem is not with wire connections between damper orperational controls. -
Page 29: Appendix A - Vent Damper Troubleshooting
APPENDIX A - VENT DAMPER TROUBLESHOOTING A.2 Vent Damper Troubleshooting Guide WARNING Do Not negate the action of any existing safety orperational controls. Avoidance of these instructions could result in death or serious injury. When servicing controls, all wires must be Note labeled prior to disconnection. - Page 30 APPENDIX A - VENT DAMPER TROUBLESHOOTING For troubleshooting only. Verify damper is in Note open position. Use service switch to keep damper in open position. Place jumper between 2 & 3. If appliance fires, remove jumper and plug receptacle back into damper controller plug.
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Page 31: Repair Parts
REPAIR PARTS JACKET - SECTION AND BASE PARTS THIS IS A REPAIR PARTS LIST - NOT A PACKAGING LIST 3 SECTION 4 SECTION 5 SECTION 6 SECTION 7 SECTION 8 SECTION 9 SECTION Description Part No. Part No. Part No. Part No. - Page 32 REPAIR PARTS NATURAL GAS BURNERS AND MANIFOLD PARTS LIST THIS IS A REPAIR PARTS LIST - NOT A PACKAGING LIST ELECTRONIC INTERMITTENT IGNITION (Shown) 3 SECTION 4 SECTION 5 SECTION 6 SECTION 7 SECTION 8 SECTION 9 SECTION DESCRIPTION PART NO. PART NO.
- Page 33 REPAIR PARTS NATURAL GAS AND PROPANE CONVERSION KITS CONVERSION KITS 3 SECTION 4 SECTION 5 SECTION 6 SECTION 7 SECTION 8 SECTION 9 SECTION DESCRIPTION PART NO. PART NO. PART NO. PART NO. PART NO. PART NO. PART NO. CONVERSION KITS NATURAL GAS TO PROPANE 43300723 43300724 43300725...
- Page 34 REPAIR PARTS Part Description ¾" Safety Relief Valve 1570001 ¾" Coupling 1150001 ¾" x 6-½" Nipple 14607002 Steam Pressure Gauge Kit 550003355 AT-140D Transformer, 24 Volt 14662305 PA-404A Pressuretrol 14662015 Glass Water Gauge Set (used with PS-802 LWCO) 14622005 Glass Water Gauge Set (used with 67D-1 LWCO) 14622010 90 Pigtail (used with PS-802 LWCO) 14643004...
- Page 35 PN 240009192, Rev. L [04/30/2019]...
- Page 36 2201 Dwyer Avenue, Utica, NY 13501 All specifications subject to change without notice. Tel. 800 253 7900 ©2018 ECR International, Inc. www.ecrinternational.com BDR THERMEA GROUP...
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