HTP EFTC-140W Installation & Startup

11
LP-520 REV. 5.1.17
Table 4 details the relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the
safest water temperature for your applications.
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
140W
199W
Installation
Indoor, Wall Mount, Fully Condensing
Minimum /
Maximum Input
(Btu/Hr)
Central Heating
(CH)
28,000 / 140,000
19,900 / 140,000*
Domestic Hot
Water (DHW)
19,900 / 199,000*
AFUE
95%
Hot Water
Capacity
35
o
F Rise
7.1 Gal
9.9 GPM
45
o
F Rise
5.5 Gal
7.7 GPM
77
o
F Rise
3.2 Gal
4.8 GPM
Flue System
Sealed Combustion Direct Vent, Power Vent
Combined Vent Length
2” (50 feet), 3” (100 feet)
Shipping Weight (lbs est.)
110
120
Orifice Size
NG
0.255” (6.5 mm)
0.327” (8.3mm)
LP
0.19” (4.85 mm)
0.244” (6.2mm)
Gas Supply
Pressure
NG
3.5” to 14” WC
LP
Manifold
Pressure
Min (2” / 3” Vent)
NG/LP: 0” WC
NG/LP: -0.015” WC
Max (2” / 3” Vent)
NG/LP: -0.22” WC
NG/LP: -0.134’WC / -0.173”WC
Power Supply
Main Supply
120V 60 Hz / 6A
Maximum Power
Consumption
160W
Ignition System
Direct Electronic Ignition / Automatic Flame Sensing
Burner System
Single Orifice Premixed Fuel Modulation Ceramic Fiber Infrared
Gas Valve System
Combination Modulating (Current Proportional)
Internal Pipe Material
Copper
Dimensions
W 17.25” – H 34” – D 15.5”
W 19.7” – H 37” – 16.8”
Minimum Flow Rate
0.5 GPM
Internal Storage Tank Water Capacity
(DHW)
1 Gallon
1.5 Gallons
Heat Exchanger Capacity
4 Gallons
3.5 Gallons
Total Water Capacity
5 Gallons
Main Controller / Control Panel
NGTX-900C / P-920C_CB-HTP
CH Pressure
Min 12 PSI - Max 30 PSI
DHW Pressure
Max 150 PSI
Connection
Sizes
DHW Inlet / Hot
Water Outlet
¾” NPT
CH Supply / Return
1” NPT
Gas Inlet
½” NPT (1/2” X ¾” Bell Coupling
Provided to Upsize Gas Line)
¾” NPT
Materials
Cabinet
Cold Rolled Carbon Steel
Heat Exchanger
Primary Heat Exchanger: Stainless Steel
Storage Tank: 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-Off Probe
Table 4 – Technical Specifications – NOTE: 199W 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

HTP EFTC-140W Specifications

General

Brand	HTP
Model	EFTC-140W
Category	Boiler
Language	English