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H. HIGH ELEVATION INSTALLATIONS
Natural gas at high elevation might contain less heating value than typical 1,000 BTU/cu ft and therefore can cause improper air / gas
mix leading to improper combustion. For natural gas installations above 3,000 ft, call your gas provider to determine the heating value
of the supplied natural gas.
PART 3 – TECHNICAL SPECIFICATIONS
MODEL
Installation
Minimum / Maximum Input
(Btu/Hr)
AFUE
Hot Water Capacity
Flue System
Combined Vent Length
Shipping Weight (lbs est.)
Orifice Size
Gas Supply Pressure
Manifold Pressure
Power Supply
Ignition System
Burner System
Gas Valve System
Internal Pipe Material
Dimensions
Storage Tank Water Capacity (DHW)
Main Controller / Control Panel
CH Pressure
DHW Pressure
DHW Inlet / Hot Water Outlet
Connection
CH Supply / Return
Sizes
Materials
Heat Exchanger
Safety Devices
Table 4 –Technical Specifications – NOTE: 199F Models Offer a Maximum BTU/Hr Input of 140,000 as Shipped. Maximum
BTU/Hr can be increased up to 199,000 BTU/Hr with a Larger External Pump Installed in the Primary Loop
DHW
CH
o
35
F Rise
o
45
F Rise
o
77
F Rise
NG
LP
NG
LP
Min (2" / 3" Vent)
Max (2" / 3" Vent)
Main Supply
Maximum Power
Consumption
½" NPT (1/2" X ¾" Bell Coupling
Gas Inlet
Cabinet
Optical Flame Sensor, Burner Plate High Limit (392
Propane), Freeze Protection (Three Stage Operation - Activates at 46
Freeze Protection in Installer Menu for Details), Exhaust Temperature High Limit
Sensor (190
140F
Indoor, Floor Stand, Fully Condensing
28,000 / 140,000
92.7%
7.1 GPM
5.5 GPM
3.2 GPM
Sealed Combustion Direct Vent, Power Vent
2" (50 feet), 3" (100 feet)
250
0.232" (5.9 mm)
0.185" (4.7 mm)
NG/LP: 0" WC
NG/LP: -0.22" WC
Direct Electronic Ignition / Automatic Flame Sensing
Single Orifice Premixed Fuel Modulation Ceramic Fiber Infrared
Combination Modulating (Current Proportional)
W 15.7" – H 53" – D 26.8"
GTX-920C / P-920C_CB-HTP
Min 12 PSI - Max 30 PSI
Provided to Upsize Gas Line)
Cold Rolled Carbon Steel
Primary Heat Exchanger: Stainless Steel
Storage Tank: Stainless Steel
o
Limit Sensor (200
F), Gas Leak Detection Sensor (Detects Natural Gas or
o
F), Blocked Flue Switch, Condensate Switch, Built-In Low Water
199F
19,900 / 199,000
19,900 / 140,000
95.7 %
9.9 GPM
7.7 GPM
4.8 GPM
260
0.327" (8.3 mm)
0.244" (6.2 mm)
3.5" to 14" WC
3.5" to 14" WC
NG/LP: -0.015" WC
NG/LP: -0.134" WC / -0.173" WC
120V 60 Hz / 6A
160W
Copper
W 15.7" – H 53.7" – D 26.8"
Under 15 Gallons
Max 150 PSI
¾" NPT
1" NPT
3/4"NPT
o
F), Water Temperature High
Cut-Off Probe
11
o
F – See
WHL-015 REV. 1.13.17
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