EMG Series Boilers Available in Natural Gas & Propane Rev 12012 Columbia Boiler Company PO Box 1070 • Pottstown, PA 19464 • Tel (610) 473-8457 • Fax (610) 367-6800 Website www.columbiaboiler.com • Email cbcsales@ptd.
Safety Instructions - Read Before Installing & Operating Equipment W Waarrnniinngg:: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life A) This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand. B) Before operating equipment smell around the appliance area for gas.
Contents Safety Instructions i Product Features 1 Installation 3 Start Up 6 Maintenance 8 Trouble Shooting 9 Parts 12 Over fifty years of engineering and product development have gone into your new Columbia boiler. Its quality and design are unsurpassed. Properly installed and maintained, it will provide many years of efficient and dependable operation. Please read this instruction manual carefully.
• EMG-31 120 EMG-31 140 EMG-31 160 Input (Btu/Hr)* 120,000 140,000 160,000 IBR Heat Capacity (Btu/Hr) 88,000 101,000 114,000 Valve Capacity (Lbs/Hr) 160 160 160 Max Water Pressure (Psi) 30 30 30 Burner Model Carlin EZ-Gas Carlin EZ-Gas Carlin EZ-Gas Fuel Type Nat. Gas L.P. Gas Nat. Gas L.P. Gas Nat. Gas L.P. Gas 0.242” 11/64 0.250” 13/64 0.290” 7/32 Fuel Input Rate (Cfm) 1.95 0.79 2.28 0.95 2.60 1.06 Max. Inlet Pressure (“W.C.) 11” 11” 11” 11” 11” 11” Min.
Boiler Dimensions Water Content 21 Gallon Coil Capacity 5 GPM A) Jacket Height 45” B) Jacket Width 21” C) Hydronic Supply Height 43” D) Coil Supply Height 41” E) Burner Height 8-1/2” F) Hydronic Return Height 21-1/2” G) Flue Pipe Diameter H) Washout I) Jacket Depth (Including Flange) 6” 21-1/2” 21” Depth Front to Rear w/ Burner 29-3/4” Hydronic Supply Size 1-1/4” Hydronic Return Size 1-1/4” Washout Size 3/4”
Installation Procedure W Waarrnniinngg:: Unit installation must be performed only by a qualified serviceman that is familiar with state and local codes. 1) Inspect the boiler package to ensure that no damage occurred during shipment. Please contact the distributor immediately if there is any sign of damage. 2) Maintain the boiler package in its protective crate as long as possible to prevent any damage when positioning the boiler.
Note: Installer responsible for ensuring that piping conforms to all applicable codes 7
6) Wire 120 VAC to the aquastat control. Ensure that the hot wire (black) is connected to the L1 connector, the neutral wire (white) to the L2 connector and the grounding wire (bare) to the green screw in the control panel. The burner, circulator and control are installed at the factory and do not require any additional wiring. In addition, it is recommended that a service disconnect be installed in line with the boiler so that the system may be de-energized for maintenance and emergencies.
18) Attach a 1/8” NPT nipple and stop cock to the outlet side of the gas valve. Regulator Adjustment Screw 19) Attach a manometer to the nipple / stop cock assembly and take a reading of the gas pressure. 20) Make sure the manifold pressure is set at 3.5” W.C. Adjustments can be made to the manifold pressure by turning the set screw located on the gas valve. Gas pressure is increased by turning the set screw clockwise and decreased by turning the screw counterclockwise.
Trouble Shooting the System See burner manual for trouble shooting burner related problems. Draft Take a draft reading; draft should be -0.
Trouble: Insufficient Heat Source Procedure Causes Remedy Circulator Check if circulator is operational Coupling worn or broken Replace coupling Pump binding Replace pump Circulator motor burned out Replace circulator motor Wiring from operating control defective Repair wiring Check thermostat settings Settings too low Increase setting Check thermostat location Bad location due to heat buildup Move thermostat to an alternate location Out of calibration Recalibrate or replace thermostat
Available Replacement Parts Item Description Boiler Part Numbers 307120 FT Baffle (8 Required) 305712 FT 6” Flue Box 337070 Gasket Material for Flue Box (25’ spool) 790330 Columbia Blank Coil Plate with 1/8” and 3/4” Tapping 481011 Columbia Coil Gasket 530675 Columbia 5 Gallon Coil Assembly with Gasket (Boxed) 337350 FT Fire Chamber 221750 FT Base Assembly Boiler Accessory Part Numbers 535030 Taco 007 Circulator Pump 559560 Altitude Gauge 1/4” x 2-1/2” Round 575020 Relief Valve (3/4” Male) 12
