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whl-648 Rev. 000 Rel. 003 Date 3.6.18
14
I. Technical Specications
Model 140 199
Installation Indoor, Wall Mounted Model or Floor Model, Fully Condensing
Minimum /
Maximum Input
(Btu/Hr)
Central Heating (CH)
14,000 / 140,000
19,900 / 140,000*
Domestic Hot Water
(DHW)
19,900 / 199,000*
Flue System Category IV, Sealed Combustion Direct Vent, Power Vent
Vent Run 2” (50 feet), 3” (100 feet), Schedule 40 PVC, CPVC, PP
AFUE 96% 95%
Hot Water
Capacity
35
o
F Rise 7.1 GPM 9.9 GPM
45
o
F Rise 5.5 GPM 7.7 GPM
77
o
F Rise 3.2 GPM 4.8 GPM
Weight (lbs) Wall Mount Model 110 120
Weight (lbs) Floor Model 140 150
Orice Size
NG - 0.327” (8.3mm)
LP - 0.244” (6.2mm)
Gas Supply
Pressure
NG
3.5” to 14” WC
LP
Power
Supply
Main Supply 120V 60 Hz, 6A
Maximum Power
Consumption
160W
General Operating Conditions
Ambient Temperature Range: 33 – 104
o
F (0.6 – 40
o
C)
Operating Relative Humidity: Up to 90% at 140
o
F (40
o
C)
Shipping and Storage Temperature Range: -4 – 176
o
F (-20 – 80
o
C)
Power Supply and Communication (CN4): 14V DC
Product Approvals and Requirements
EMC: 89/336/EEC
LVD: 73/23/EEC
Ignition System Direct Electronic Ignition / Automatic Flame Sensing
Burner System Premixed Fuel Modulation / Ceramic Fiber Infrared
Gas Valve System Combination Modulating (Current Proportional)
Internal Pipe Material Copper
Wall Mount Model Dimensions W 17.5” - H 34” - D 15.4” W 19.7” - H 37” - D 16.8”
Floor Model Dimensions W 19” - H 45” - D 17” W 22” - H 48” - D 18”
Internal Storage Tank Water Capacity (DHW) 1 Gallon 1.5 Gallons
Heat Exchanger Capacity 4 Gallons 3.5 Gallons
Minimum Flow Rate 0.5 GPM
Total Water Capacity 5 Gallons
Control Panel / Main Controller NGTX-900C / P-920C_CB-HTP
CH Water Pressure Min 12 - Max 30 PSI
DHW Water Pressure Max 150 PSI
Connection
Sizes
DHW Inlet / Outlet 3/4” NPT
CH Supply / Return 1” NPT
Gas Inlet 3/4” NPT
Materials
Cabinet
(Wall Mount Model)
Painted Cold Rolled Carbon Steel
Cabinet (Floor Model) Galvaneal
Heat Exchanger 316L Stainless Steel
Safety Devices
Optical Flame Sensor, Burner Plate High Limit (392
o
F), Water Temperature High Limit Sensor (200
o
F),
Freeze Protection (Three Stage Operation - Activates at 46
o
F – See Freeze Protection in Installer Menu
for Details), Exhaust Temperature High Limit Sensor (190
o
F), Blocked Flue Switch, Condensate Switch,
Built-In Low Water Cut-O Probe
Table 8 - Technical Specications - *NOTE: 199 Models oer 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.
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