Install Instructions

7
GPH = U.S. Gallons per Hour
Mbh = 1000 Btu (British thermal units) per hour.
psi = Pounds per square inch
*MAWP = Maximum allowable working pressure. This low pressure oil red hot water boiler is constructed and
hydrostatically tested for maximum working pressure of 65 psi in accordance with the latest revision of the A.S.M.E.
(American Society of Mechanical Engineers) Boiler and Pressure Vessel Code Section IV Standards for heating boilers.
AFUE= Annual Fuel Utilization Efciency
Heating Capacity and AFUE based on 13.1% CO
2
(13.2% CO
2
at 1.65 GPH), -0.02” w.c. draft in breech, and # 1 smoke or
less. Testing is done in accordance with U.S. DOE (Department of Energy) test procedure.
Heating Capacity indicates amount of heat available after subtracting losses up the stack. Remaining heat is available
to heat water. Small portion is heat from jacket and surfaces of boiler and this heat stays in structure. Net AHRI rating
represents portion of remaining heat applied to heat radiation or terminal units (i.e. nned tube baseboard, cast iron
radiators, radiant oor, etc.). Difference between Heating Capacity and Net AHRI Rating, called piping and pickup
allowance, establishes reserve for heating volume of water in system and offsetting heat losses from system piping. Net
AHRI ratings shown are based on piping and pickup factor of 15% in accordance with AHRI Standard as published by
Hydronics Institute.
Net AHRI rating of boiler selected should be greater than or equal to calculated peak heating load (heat loss) for building
or area(s) served by boiler and associated hot water heating systems. Consult manufacturer before selecting boiler for
installations having unusual piping and pickup requirements.
4 - RATINGS & CAPACITIES
Table 1 - RATINGS & CAPACITIES
OIL-FIRED HOT WATER BOILERS
Model
Number of
Sections
Firing
Rate
[GPH]
Input
[Mbh]
Heating
Capacity
[Mbh]
Net
AHRI
Rating
[Mbh]
*MAWP
Water
[psi]
AFUE
[%]
Min. relief
Valve
Capacity
[Mbh]
Flue
Size
[Inches]
Q3-4 4 0.75 105 92 80 65 87.0 92 5
Q3-5 5 1.00 140 123 107 65 87.0 123 5
Q3-6 6 1.30 182 160 139 65 87.0 160 5
Q3-7 7 1.65 231 202 176 65 87.0 202 6
PN 473900000