Technical Specifications - Westinghouse WGRGH20**75F Series Installation, Start-Up, Maintenance, Parts, Warranty

I. Technical Specifications
Energy Factor (EF)* / Uniform
Energy Factor (UEF)* / Thermal
Efficiency (TE)*
Minimum to Maximum Input
(Btu/Hr)
Condensate pH Level
Flue System
3" Vent Run
Vent Materials
Weight
Orifice Size
Gas Supply Pressure
Manifold Pressure
Power Supply
Ignition System
Burner System
Gas Valve System
Minimum Flow Rate
Internal Pipe Material
Dimensions
Reserve Tank
o
First Hour Rating at 90 F Rise
Water Pressure
DHW Setpoint Temperature Range
Activation Sensing
Temperature Control
Connection Sizes
Materials
Safety Devices
Table 7 - Technical Specifications - *Independent DOE tested
Model
20 Gallon Models
40 Gallon Models
20 Gallon Models
40 Gallon Models
20 Gallon Models
40 Gallon Models
20 Gallon Models
40 Gallon Models
NG
20 Gallon
Models
LP
NG
40 Gallon
Models
LP
NG
LP
Min (3")
20 Gallon
Models
Max (3")
Min (3")
40 Gallon
Models
Max (3")
Main Supply
20 Gallon
Models
Maximum Power
Consumption
40 Gallon
Models
20 Gallon Models
40 Gallon Models
20 Gallon Models
40 Gallon Models
20 Gallon Models
40 Gallon Models
Cold Inlet / Hot Outlet
Gas Inlet
Cabinet
Heat Exchanger
75F 76F
0.83 EF / 0.88 UEF 96 TE
0.90 UEF N/A
37,500 to 75,000 37,500 to 76,000
35,000 to 75,000 N/A
Sealed Combustion Direct Vent, Power Vent
100 feet, 8 elbows max, 5 ft. deduction per 90
150 feet, 8 elbows max, 5 ft. deduction per 90
Schedule 40 PVC, CPVC, PP, Stainless Steel
3.9 mm (0.154")
2.8 mm (0.11")
4.0 mm (0.157")
N/A
2.8 mm (0.11")
3.5" to 14" WC
NG: -0.15" / LP: -0.10" WC
NG: -0.05" / LP: -0.06" WC
NG: -0.04" / LP: -0.05" WC
Dedicated 120VAC 60 Hz with 3 Pronged Power Cord
45W
31W
Direct Electronic Spark Ignition with Automatic Flame Sensing
Single Orifice Premixed Fuel Injection Metal Fiber Premix Burner
Dual Stage Air Ratio Negative Pressure
Zero Activation
21" Diameter - 47" Height
21" Diameter - 63" Height
20 Gallons
40 Gallons
107 Gallons
146 Gallons N/A
Min 12 - Max 150 PSI
Mechanical Tempering Valve from 70 - 145
Factory Preset to 120
Tank Temperature
Thermistor Starts with Heating Cycle
3/4" Male NPT
1/2", 3/4" Female NPT
Cold Rolled Carbon Steel
Stainless Steel
T&P Valve, Flame Rod, Remaining Flame Detection, Fan RPM Check, Vent
Blockage Detection, ECO Burner Plate (305
1 x 5A Fuse, Intake Blockage Detection
whl-605 Rev. 002 Rel. 000 Date 1.23.19
100F
95 TE
0.87 UEF
50,000 to 100,000
35,000 to 100,000
4 pH
o
elbow
o
elbow
110 lbs.
153 lbs.
5.3 mm (0.208")
3.5 mm (0.137")
4.0 mm (0.157")
2.8 mm (0.11")
53W
50W
Copper
130 Gallons
172 Gallons
o o
F (21 - 63 C)
o o
F (48.9 C)
o
F), ECO Hot Water Cutoff (185
13
o
F),