Ratings & Data - Natural Gas & Propane Gas - Columbia MCB50 Installation, Operation & Maintenance Manual

EXPLANATORY NOTES
-- All boilers are design certified for installation on noncombustible floor.
-- For installation on combustible floors use combustible floor kit.
-- Recommended chimney height 20 feet. In special cases where conditions permit, chimney height may be
reduced to 10 feet. Refer to the latest revision of NFGC part 11.
-- Electric service to be 120 Volts, 15 Amps, 60 Hz.
-- The MEA number for the this boiler is 19-79-E.
(1) Input rating for sea level to 2,000 ft. (610m) above sea level.
• United States, over 2000 ft (610m) above sea level. Reduce input rate 4% for every 1000 ft (304m) above sea
level.
• Canada, 2000 ft (610m) to 4500 (1350m) above sea level. Reduce input per table.
• Canada, over 4500 ft (1350m) above sea level. Contact Provincial authority having jurisdiction.
(2) Net Water Ratings shown based on piping and pickup allowance of 1.15. Consult manufacturer before
selecting boiler for installations having unusual piping and pickup requirements, such as intermittent
system operation, extensive piping systems, etc.
For forced hot water systems where boiler and all piping within area to be heated, boiler may be selected
on basis of its heating capacity.
(3) Tank sized for non-ferrous baseboard or radiant panel systems. Increase size for cast iron baseboard and
radiation.
STANDARD EQUIPMENT: Boiler Jacket, Cast Iron Boiler Battery, High Limit Control, Vent Damper Relay,
Theraltimeter Gauge, Circulator With Return Piping To Boiler, Main Gas Burners, Combination 24 Volt Gas Control
(Includes Automatic Gas Valve, Gas Pressure Regulator, Automatic Pilot, Safety Shutoff, Pilot Flow Adjustment, Pilot
Filter), A.S.M.E. Relief Valve, Drain Valve, Spill Switch, Rollout Switch, Automatic Vent Damper. Not Shown Are:
Wiring Harness, Thermocouple, Non-linting Safety Pilot.
OPTIONAL EQUIPMENT: Intermittent Electric Ignition Pilot System.
RATINGS & DATA - NATURAL GAS & PROPANE GAS
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