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GB Series "A" Gas Hot Water Boiler  
Features  Efficiency 
All series unit feature high A.F.U.E. ratings (Annual 
High Efficiency Fuel Utilization Efficiency) when properly installed. 
92 to 94% AFUE
Clean Burning Venting 
Low NOx The Boiler is vented using 2"-3" CPVC/PVC pipe 
Sealed Combustion and fitting in accordance with the installation 
No Open Flame instructions and local codes. 
Direct Vent, CPVC Vent Pipe
Wall Hung or Floor Mounted Heat Exchanger 
Full Access, Easy Service Stainless steel heat exchanger for long life. 
Combustion Air Blower 
Direct drive PSC motors are used with all models. 
PSC motors have a low starting torque, and high 
efficiency.  For ease of service, the entire blower 
assembly may be removed. 
Burner Assembly 
The unique advanced burner design provides 
reliable performance and low pollutant emissions. 
Burner assembly is constructed of Incoel Alloy 
and stainless steel to ensure long, reliable life.
Boiler Specifications
Model Number GB040A GB060A GB090A GB130A GB160A
Burners (No.) 1 1 1 1 1
Electrical Data (Volts/Hz/Ph.) 115/60/1 115/60/1 115/60/1 115/60/1 115/60/1
(F.L.A.) 3.2 amps 3.2 amps 3.2 amps 4.5 amps 4.5 amps
Transformer Size (VA) 40 40 40 40 40
A.F.U.E %* 94.1 94.1 92.6 92.6 92.5
Flue Size (Inches) 2 2 2 3 3
Gas Pipe Size (NPT) 2-Jan 2-Jan 2-Jan 2-Jan 2-Jan
 Boiler  Inlet 1 1 1 1 1/4 1 1/4
Water Outlet (NPT) 1 1 1 1 1/4 1 1/4
Weight Net (Lbs.) 104 104 104 167 167
Shipping 110 110 110 173 173
                  *As tested at AGA Labs at 120ºF and 80ºF return water temperature.  
Model BOILER RATING BTU/HR.
Input Orifice  Output+ Manifold  Water  Pressure Drop 
Size Press. "W.C." Pump Min.  Thru Boiler 
    Flow GPM Ft./Water
GB040A 40,000 #38 35,520 2.5 4 32.5
GB060A 60,000 #30 53,400 2.5 6 8
GB090A 90,000 #9 79,920 2.5 8 13
GB130A 130,000 #10 115,400 2.5 12 22
GB160A 160,000 #1 DMS 142,100 2.5 14 28
 
+As determined by GAMA. 
Heating capacity valid for elevations up to 2,000 feet above sea level.
Model Cabinet Size In. ‡*Max.  *Max. 
Vent  Intake 
Length  Air 
Ft. Length 
Width Depth Height   Ft.
GB040A 18 11 36 25 25
GB060A 18 11 36 25 25
GB090A 18 11 36 25 25
GB130A 21 1/8 11 42 1/8 30 35
GB160A 21 1/8 11 42 1/8 30 35
*Lengths are feet plus 6 elbows. 
‡First ten feet must be CPVC plastic pipe; additional venting can be PVC.
     
                   
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GWH Series "A" Volume Hot Water Heater
Features   Venting 
The GWH150 is vented using 3" CPVC/PVC 
94% Thermal Efficiency plastic pipe and fitting in accordance with the 
Direct CPVC Vent installation instructions and local codes. 
Sealed Combustion
Low NOx - 7.4 PPM Heat Exchanger 
Electronic Ignition The heat exchanger is manufactured form 
Wall Hung of Floor Mounted stainless steel for long life. 
Compact Cabinet
Combustion Air Blower 
Direct drive PSC motors feature low starting 
torque and high efficiency.  For ease of service, 
the entire blower assembly may be removed. 
Burner Assembly 
The unique burner design provides reliable 
performance and low pollutant emissions. 
Burner assembly is constructed of Incoel 
Alloy to ensure long, reliable life.
Water Heater Specifications Model Water Heating Rating Btu/Hour
Model No. GWH150 Input Orifice Output Manifold Water Press 
Burners (No.) 1 Size Press. "W.C." Pump Min.  Drop 
Electrical Data (volts, HZ/PH) 115/60/1     Flow GPM Thru 
(F.L.A.) 4.5       Boiler 
Transformer Size 40       Ft./Water
Thermal Efficiency 94.17%* GWH150 150,000 #1 DMS 141,250 3 14 28
Flue Size (inches) 3  
Gas Pipe Size (NPT) 2-Jan  
Boiler  Inlet 1 1/4  
Water Outlet 1 1/4  
Weight Net (lbs.) 165  
Shipping (lbs.) 170  
 
*As determined by tests performed at AGA Laboratory.
                   
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GlowCore A.C., Inc. USA: 4007 Platinum Way, Dallas, Texas 75237
Telephone: 214-330-8852  Fax: 214-330-0650 Email Sales & Marketing forwarding: gtoth@abbot-suart.com
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