Patterson-Kelley MOD-04 사용자 설명서

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 Modu-Fire
® 
Gas-Fired Boiler 
Installation 
 
 7 
is wired for 120 volts, single phase, 60 hertz.  The total 
operating amperage is indicated on the rating name-
plate.  The 1000 series require less than 9 amps; the 
1500 and 2000 series less than 12 amps.  Before start-
ing the boiler, check to ensure that the proper voltage 
and amperage are connected to the boiler. 
An external electrical disconnect (not supplied with 
the boiler) with adequate overload protection is re-
quired.  The boiler must be grounded in accordance 
with local codes or in the absence of such require-
ments, in the U.S. with National Electrical Codes, 
ANSI/NFPA No. 70 latest edition and in Canada, wire 
according to the current Canadian Electrical Code. 
 
Note:  A dedicated earth ground (green wire) is re-
quired to avoid nuisance shutdowns.  Do not ground 
through the conduit.  It is also important that proper 
polarity be maintained. 
 
3.5
  
C
OMBUSTION 
A
IR
 
Combustion air must be free from dust, lint, etc.  The 
presence of such materials in the air supplied to the 
burner could cause nuisance "Low Air" shutdowns or 
premature burner failure.  The boiler should not be 
operated during construction while the possibility of 
drywall dust, demolition dust, etc. exists. 
Provisions for combustion and ventilation air must be 
in accordance with Section 5.3, Air for Combustion 
and Ventilation, of the National Fuel Gas Code, ANSI 
Z223.1, latest edition, or applicable provisions of the 
local building codes.  In Canada, combustion air open-
ings shall comply with CSA 4.9.  The formula is "1 sq. 
in. per 1,000 Btu/hr of gas input not less than 100 sq. 
in."  The location shall be "neither more than 18," nor 
less than 6" above the floor level."  
The boiler room shall be provided with two openings 
to ensure adequate combustion air and proper ventila-
tion.  One opening should be 6 to 12 inches above the 
floor and the other 6 to 12 inches below the ceiling, 
preferably on opposite walls.  The size of each open-
ing is determined by whether air is taken from inside 
or outside the building.  In Canada, ventilation air 
openings shall be at least 10% of the cross sectional 
area required for combustion air, but not less than 10 
square inches.  It is to be located at the highest practi-
cal point communicating with outdoors.  
If air is taken directly from outside the building, each 
opening should have a net free area of 1 square inch 
for each 4,000 Btu per hour of total boiler input.  For 
instance, 300 square inches (2-1/12 square feet) are 
required for 1,200,000 Btu per hour input. 
When air is taken from the outdoors through a vertical 
duct, 1 square inch per 4,000 Btu per hour is required.  
If a horizontal duct is used, 1 square inch per 2,000 
Btu per hour is required, i.e., 600 square inches for 
1,200,000 Btu per hour input. 
If air is taken from another interior space, each open-
ing should have a net free area of 1 square inch for 
each 1,000 Btu per hour of boiler input (1,200 square 
inches for a 1,200,000 Btu per hour.) 
 
WARNING!  
Under no circumstances shall the boiler room ever be 
under a negative pressure.  Particular care should be 
taken when exhaust fans, compressors, air-handling 
units or other equipment may rob air from the boiler. 
 
 
The combustion air supply must be completely free of 
chemical fumes which may be corrosive when burned 
in the boiler.  Common chemicals which must be 
avoided are fluorocarbons and other halogenated com-
pounds, most commonly present as refrigerants or sol-
vents, such as freon, trichlorethylene, perchlorethyl-
ene, chlorine, etc.  These chemicals, when burned, 
form acids which quickly attack the boiler tubes, tube 
sheets, flue collectors and the boiler stack.  The result 
is improper combustion and premature boiler failure. 
 
 
3.6
  
F
LUE 
V
ENTING
 
 
This boiler requires a special vent system.  Vent instal-
lations shall be in accordance with Part 7, Venting of 
Equipment, of the National Fuel Gas Code, ANSI 
Z223.1, CSA B149 code or applicable provisions of 
the local building codes. 
This boiler is Category II as it is defined in ANSI 
Z21.13/CSA 4.9 latest edition.  The vent material must 
be listed Category II Vent pipe (316L or AL-29 4C 
Stainless).  Under no circumstances shall a Category I 
material (e.g. B-vent) be used.