Residential Boilers - Gas Boilers Series 63™ Boiler

The Series 63 was designed as an industry-leading steam boiler that can also be used in hot water applications. Large cast iron sections and significant water content make it ideal for any steam or large volume hot water application. The integral draft diverter lends to a low-profile design allowing for installation in tight spaces with low ceilings.

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Product Details:

Type: Residential
Construction: Cast Iron
Fuel: Gas-Fired (Natural or LP)
Input: 88.5 to 287.5 MBH
Output: 73 to 241 MBH
Venting: Natural Draft
Trim: Water or Steam
Ignition: Spark Pilot


AHRI Member

 

Series 63™ Water Content Approx. Shipping Weight, lb
Model Number Input, MBH Heating Capacity3, MBH Net Ratings1 AFUE3
Water Steam Steam, sqft Steam, MBH Water, MBH Water, % Steam, % Water, gal Steam, gal
63-03L 88.5 73 74 233 56 63 82.4 83.0 13.2 9.3 465
63-03 118 99 98 308 74 86 83.5 82.6 13.2 9.3 465
63-04L 147.5 123 123 383 92 107 82.7 82.6 15.6 10.8 576
63-04 177 148 147 458 110 129 83.4 82.4 15.6 10.8 576
63-05L 206.5 172 171 533 128 150 82.9 82.3 18.0 12.4 700
63-05 236 198 196 613 147 172 83.3 82.2 18.0 12.4 700
63-06 287.5 241 238 746 179 210 83.2 82.0 20.4 13.9 812
  1. Net Ratings are based on DOE Heating Capacity less an allowance for normal piping and pickup as determined by the Testing and Rating Standard for Low Pressure Cast Iron Heating Boilers of the Hydronics Institute. Water ratings are based on a piping and pickup factor of 1.15. Steam ratings are based on a piping and pickup factor of 1.33. Consult PB Heat before selecting a boiler for gravity hot water installations or for installations having unusual piping and pickup requirements such as exposed piping, night set-back, etc. Ratings shown are for elevations up to 2,000 feet. For elevations above 2,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea level.
  2. Minimum Natural Gas Inlet Pressure exceptions: 63-06 SPRK 5.3”.
  3. Heating Capacity and Annual Fuel Utilization Efficiency (AFUE) ratings are based on U.S. Government tests.




Series 63™ Boiler Dimensions

Boiler Model Number Jacket Depth
“A”
Jacket Width
“B”
Jacket Height
“C”
Rear of Jkt. to c/l of Vent
“D”
Left of Jkt. to c/l of Vent
“E”
Vent Size Dia.
“F”
Overall Depth
“G”
Rear of Jkt. to c/l of Supply
“H”
Rear of Jkt. to c/l of Gas Inlet
“J”
63-03L 28-1/8″ 16-1/8″ 36-3/8″ 5-5/8″ 8-1/16″ 6″ 37-1/4″ 18-11/16″ 25-7/8″
63-03 28-1/8″ 16-1/8″ 36-3/8″ 5-5/8″ 8-1/16″ 6″ 37-1/4″ 18-11/16″ 25-7/8″
63-04L 28-1/8″ 20-3/8″ 36-3/8″ 5-1/8″ 10-3/16″ 7″ or 6″* 37-1/4″ 18-11/16″ 25-7/8″
63-04 28-1/8″ 20-3/8″ 36-3/8″ 5-1/8″ 10-3/16″ 7″ or 6″* 37-1/4″ 18-11/16″ 25-7/8″
63-05L 28-1/8″ 24-5/8″ 36-3/8″ 6-5/8″ 12-5/16″ 8″ 39-1/4″ 18-11/16″ 25-7/8″
63-05 28-1/8″ 24-5/8″ 36-3/8″ 6-5/8″ 12-5/16″ 8″ 39-1/4″ 18-11/16″ 25-7/8″
63-06 28-1/8″ 28-7/8″ 36-3/8″ 6-1/8″ 14-7/16″ 9″ 39-1/4″ 18-11/16″ 25-7/8″

* Draft hood outlet and vent damper are 7″ diameter on 63-04L and 63-04. These models are also certified in USA with 6″ vent using vent reducer provided in draft hood carton. Install reducer on outlet of vent damper.

Tapping Locations

Tap ID Size N.P.T. Steam Water
K 1 14″ Skim Tapping* Skim Tapping*
L 1″ Tank Supply/Limit N/A
M 1″ Tank Return N/A
N 3/4″ Boiler Drain Boiler Drain
P 3″ Supply Supply
R 2 12″ Return Return
S 3/4″ Safety Valve* Relief Valve*
T 1/2″ Gauge Glass N/A
U 3/4″ Primary Probe Low Water Cut-Off N/A
V 3/4″ N/A or Primary Limit (9-12) N/A or Secondary Limit (9-12)
W 3/4″ Press. Gauge or Secondary Limit (9-12) Press./Temp. Gauge or
Primary Limit (9-12)
X 3/4″ Primary Limit or Press. Gauge (9-12) Primary Limit or Temp/Press Gauge (9-12)
Y 3/4″ Secondary Probe Low Water Cut-Off N/A

* For relief valve larger than 3/4″, use “K” boiler skim tapping. Do not increase the pipe size between the boiler and the valve.