Burnham K50 Boiler User Manual


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7
SECTION II – GENERAL INFORMATION
1. BOILER INSTALLATION must conform to the
requirements of the authority having jurisdiction, or in
the absence of such requirements, to:
USA – “National Fuel Gas Code, ANSI Z223.1”.
When required by the authority having jurisdiction,
the installation must conform to American Society of
Mechanical Engineers Safety Code for Controls and
Safety Devices for Automatically Fired Boilers, No.
CSD-1.
CANADA – “Installation Codes for Natural and
Propane Gas Burning Appliances and Equipment,
CAN/CSA-B149 (.1 or .2)”.
DO NOT INSTALL THIS BOILER ON CARPETING.
2. BOILER LOCATION – locate on a level NON-
COMBUSTIBLE FLOOR as close as possible to
chimney so that vent connection is short and direct.
DANGER
Boiler must not be installed directly on combustible


The boiler shall be installed such that the gas ignition
system components are protected from water (dripping,
spraying, rain, etc.) during boiler operation and service
(circulator replacement, control replacement, etc.).
Donotinstallboilerwheregasolineorotherammable
vapors or liquids, or sources of hydrocarbons (i.e.
bleachers, cleaners, chemicals, sprays, paint removers,
fabric softeners, etc. ) are used or stored.
Refer to table below for minimum clearances, service
clearances, and clearances for removal of Tankless
Heaters.
3. PROVIDE COMBUSTION AND VENTILATION
AIR.
In the USA refer to National Fuel Gas Code, NFPA
54/ANSI Z223. Section 5.3, Air for Combustion and
Ventilation. In Canada refer to Natural Gas Installation
Code, CAN/CSA-B149.1 – latest edition or Propane
Installation Code, CAN/CSA-B149.2 – latest edition.
Local code provisions may apply and should be
referenced.
WARNING
Adequate combustion and ventilation air must

a. Determine volume of space (boiler room). Rooms
communicating directly with the space, in which
the appliances are installed, through openings not
furnished with doors, are considered a part of the
space.
Volume(ft³)=Length(ft)xWidth(ft)xHeight(ft)
b. Determine total input of all appliances in the space.
Add inputs of all appliances in the space and round
theresulttothenearest1000Btuperhour.
c. Determine type of space.
Divide Volume by Total Input of all appliances
in space. If the result is greater than or equal to
50
ft³/1000Btuperhour,thenitisconsideredan
unconned space.
Iftheresultislessthan50ft³/1000Btuperhour,
then the space is considered a conned space.
d. For boiler located in an unconned space of a
conventionally constructed building, the fresh
airinltrationthroughcracksaroundwindows
and doors normally provides adequate air for
combustion and ventilation.
e.Forboilerlocatedinaconnedspaceoran
unconnedspaceinabuildingofunusuallytight
construction, provide outdoor air with the use
of two permanent openings which communicate
directly or by duct with the outdoors or spaces
(crawl or attic) freely communicating with the
outdoors. Locate one opening within 12 inches of
top of space. Locate remaining opening within 12
inches of bottom of space. Minimum dimension
of air opening is 3 inches. Size each opening per
following:
1. Direct communication with outdoors. Minimum
freeareaof1squareinchper4,000Btuperhour
input of all equipment in space.
2. Vertical ducts. Minimum free are of 1 square
inch
per4,000Btuperhourinputofall
CLEARANCES - From Table below and from dimensional data in Fig. 1, determine BOILER ROOM space necessary for appropriate access
to and servicing of Boiler. Consideration should be given to other appliances installed in the same area. Consult with local Building and
Safety Codes for compliance.
MINIMUM CLEARANCE - JACKET TO
COMBUSTIBLE CONSTRUCTION
U.S.A. SERVICE CLEARANCE TO
NON-COMBUSTIBLE CONSTRUCTION
CLEARANCES REQ’D FOR REMOVAL
OF TANKLESS HEATER
AT-2 AT-3 AT-4
Left Side 24” (61 cm) 18” (Controls) * 27” 32” 42”
Right Side 24” (61 cm) 18” (Controls) * 27” 32” 42”
Front 24” (61 cm) 36” (Cleaning-Burner Removal) * --- --- ---
Rear 24” (61 cm) 36” (Cleaning) * --- --- ---
Top 24” (61 cm) ---------------------------------------- --- --- ---
* CANADA: 48” (122 cm) Clearance is required
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