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

Mcb series cast iron gas fired boilers for forced hot water
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RATINGS & DATA - NATURAL GAS & PROPANE GAS
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) For elevations above 2000 feet, ratings should be
reduced at a rate of 4% for each 1000 feet above sea
level.
(2) Base on 170° temperature in radiators.
(3) Tank sized for non-ferrous baseboard or radiant panel
systems. Increase size for cast iron baseboard and
radiation.
--Net I=B=R ratings include 15% allowance for normal
piping and pick-up load. Manufacturer should be
consulted on installations having other than normal piping
and pick-up requirements.
** For equivalent square feet of radiation, divide I=B=R
output by 150.
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 Cock, Spill Switch, Rollout Switch, Automatic Vent
Damper. Not Shown Are: Wiring Harness, Thermocouple,
Non-linting Safety Pilot.
OPTIONAL EQUIPMENT: Intermittent Electric Ignition
Pilot System.
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