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IMPORTANT: READ THESE INSTRUCTIONS CAREFULLY BEFORE PROCEEDING WITH THE
INSTALLATION OF BOILER. POST INSTRUCTIONS NEAR BOILER FOR REFERENCE BY OWNER
AND SERVICE TECHNICIAN. MAINTAIN INSTRUCTIONS IN LEGIBLE CONDITION.
NOTE: — The equipment shall be installed in accordance with those installation regulations in force in the area where the
installation is to be made. These shall be carefully followed in all cases. Authorities having jurisdiction shall be consulted before
installations are made.
All wiring shall be made in accordance with the National Electrical Code and/or local regulations.
SECTION I - INSTALLATION INSTRUCTIONS ........................................................... Page 3
SECTION II - OPERATING AND SERVICE INSTRUCTIONS ..................................... Page 5
LEFT SIDE
RIGHT SIDE
TOP
BOTTOM
REAR
FRONT
* Closet Installation Requires Two Ventilation Openings, one located at top and one at bottom, each opening to have 25 sq. in. net free area.
DOE HEATING
CAPACITY, BTU/HR
Boiler
Model
240V
220V
208V
412
41,000
35,000
31,000
416
55,000
46,000
41,000
420
68,000
58,000
52,000
DOE Heating Capacities are shown. Where the boiler and piping are in the heated space, the boiler may be selected on the basis of the DOE Heating Capacity. Where
a piping loss and/or a pickup loss will exist, add this loss to the building loss to determine the total heating requirements. Where a piping loss only will exist but cannot be
calculated, multiply the calculated building loss by a 1.15 factor to determine the total heating requirement.
*For runs in excess of 50 ft. consult local or national electrical code.
Maximum Allowable Working Pressure: 30 PSI (Water Only)
2
CLEARANCE REQUIREMENTS
For Service Accessibility
18"
6"
9"
9"
0"
For Door Removal - 24"
KW
AFUE
Amps
No. and Size
Rating
%
(240V)
of Elements
(240V)
100
12
50
2-3KW (top)
100
16
70
2-5KW (bottom)
100
20
85
Figure 1: Dimensions and Specifications
Approved for Closet & Alcove Installation with minimum
clearance to combustible material*
2" Closet
18" Alcove
Recommended Power
Supply to Boiler
Min.*
Max. Fuse
Wire Size
Size-Amps
4-3KW
#6 AWG
60
#4 AWG
80
4-5KW
#2 AWG
90
18"
0"
9"
15"
0"
Appx.
Water
Wt. Full
Contents
(Lb.)
(Gal.)
155
3½
155
3½
155
3½
Water Flow Rate -
(GPM) Based on 20°F
Temp. Rise and Boiler
Capacity At
240V
220V
208V
4.1
3.5
3.1
5.5
4.6
4.2
6.8
5.8
5.2
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