Ratings And Capacities - UTICA BOILERS MGC-8D Installation, Operation And Maintenance Manual

BOILER
MODEL
NUMBER
MGC-8
MGC-9
Input rating for sea level to 2,000 ft. (610m) above sea level. Over 2000 ft (610m) above sea level.
†
Reduce input rate 4% for every 1000 ft (304m) above sea level.
+ Heating Capacity based on D.O.E. (Department of Energy) test procedure.
Add model number suffice 'P' for Propane.
(1)
Net AHRI Water rating shown based on piping and pickup allowance of 1.15. Consult manufacturer before selecting
(2)
boiler for installations having unusual piping and pickup requirements, such as intermittent system operation,
extensive piping systems, etc.
MBH = 1,000 Btuh = British Thermal Unit Per Hour
(3)
Ratings marked "Net AHRI Ratings" indicate amount of remaining heat input used to heat radiation or terminal units. Net
AHRI Ratings shown are based on allowance of 1.15 in accordance with factors shown on AHRI Standard as published by
The Hydronics Institute.
- Selection of boiler size should be based upon "Net AHRI Rating" being equal to or greater than calculated heat loss of
the building.
- Consult manufacturer before selecting boiler for installations having unusual piping and pickup requirements.
BOILERS FOR USE AT HIGH ALTITUDE
Boiler is factory equipped for use at altitudes of 0-2,000 feet above sea level.
For use at altitudes above 2,000 feet above sea level, input ratings are reduced by change in main burner orifice size.
For altitudes above 2,000 feet above sea level, input ratings should be reduced at rate of 4% for each 1,000 feet above
sea level. Consult National Fuel Gas Code, ANSI Z223.1/NFPA 54 or manufacturer for correct orifice sizing information.
2 - BOILER RATINGS AND CAPACITIES
† NATURAL GAS
(1)
(3) Heating
Input
(1)
Capacity
Mbh
(3)
Mbh
262.5 220
299 251
Table 2 - Ratings and Capacities
† PROPANE GAS
(2)
NET AHRI
HEATING
(3)
INPUT
RATING
CAPACITY
MBH
Water,
(3)
Mbh
191 245
218 280
3
NET AHRI
INTERMITTENT
(3)
RATING IGNITION WITH
MBH
VENT DAMPER
206 179
235 204
240011125
P/N
AFUE
83.9
83.7
, Rev. C [07/22/2015]