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WATERHEATERS
CONTINUOUS FLOW TANKLESS WATER HEATER SYSTEMS
PREMIUM CONDENSING
TANKLESS GAS WATER
HEATER (NPE-S)
•
½” gas pipe capable up to 24'
• Field convertible gas system
• Ultra condensing efficiency .98EF
• Dual stainless steel heat exchangers
• Low NOx emissions (≤ 20ppm)
• SCH 40, 2” venting up to 60’
• Cascading capable
• Indoor or Outdoor Wall-Hung
• Forced Draft Direct Vent
• Electronic Ignition
• 15-150 PSI Water Pressure
Natural Gas Supply
Pressure (from source)
3.5"-10.5" WC
Propane Gas Supply
Pressure (from source)
8.0"-13.0" WC
Minimum Flow Rate to
activate Water Heater
0.5 GPM
Connection
Sizes
Cold Water
Inlet
3/4" NPT
Hot Water
Outlet
3/4" NPT
Gas Inlet
3/4" NPT
Power
Supply
Main Supply
120V AC, 60Hz
Maximum
Power
Consumption
200W (up to 2
amps), 350W (up
to 4 amps) with
external pump
connected
Materials
Casing
Cold Rolled Carbon
Steel
Heat
Exchangers
Stainless Steel
Venting
Exhaust &
Intake
2" or 3" PVC, CPVC,
Polypropylene
2" or 3" Special Gas
Vent Type BH (Class
II, A/B/C)
Vent
Clearances
0" to Combustibles
Safety
Devices
Flame Rod, APS, Ignition Operation
Detector, Water Temperature High
Limit Switch, Exhaust Temperature
High Limit Sensor, Power Surge Fuse
Locke#
E1384
NPE-180S 15k-150k BTU/h
E1385
NPE-210S 19.9k-180k BTU/h
E1386
NPE-240S 19.9k-199.9k BTU/h
TANKLESS WATER HEATERS
SOLD TO CERTIFIED DEALERS
+ INSTALLERS ONLY!
See Your Local Locke Supply
Plumbing Store for more details.
CONDENSING GAS
COMBINATION BOILER
• Super condensing efficiency
• Dual stainless steel heat exchangers
• Low NOx emissions (≤20ppm)
• SCH 40, 3” PVC venting up to 100’
• Gas-Air Ratio Control
• Automatic water filling system
• Remote controller included
Heat Capacity (Input)
Min : 20,000 Btu/hr Max
:199,900 Btu/hr
Flow Rate(DHW) 77ºF Rise
4.5 GPM
Dimensions
17” × 28” × 12”
CAFUE
Natural Gas
.92
Propane Gas
.90
Weight
84 lbs
Installation Type
Indoor / Outdoor Wall-
Hung
Venting Type
Direct Vent
Ignition
Electronic Ignition
DHW Pressure (min-max)
15 - 150 PSI
Heating Pressure (min-max)
7 - 30 PSI
Gas Supply
Pressure (from
source : min-
max)
Natural Gas
5.5”W.C. ~ 10.5”W.C.
Propane Gas 10.5”W.C. ~ 13.5”W.C.
Minimum Flow Rate(DHW)
0.5 GPM
Connection
Sizes
Heating Supply
/ Return
1” NPT
DHW Inlet /
Outlet
3/4” NPT
Auto Feeder
1/2” NPT
Gas Inlet
3/4” NPT
Power Supply Main Supply 120VAC, 200W (max 2A)
Heat Exchangers
Primary Heat Exchanger
: Stainless Steel
Condensing Heat
Exchanger : Stainless
Steel
Venting (0"
Clearance)
Exhaust
SCH 40 3" PVC, SCH 40
3" Polypropylene, SCH
80 3" CPVC
Intake (3")
PVC, Flex Aluminum,
Flex Stainless Steel, ABS
Locke#
E1395
CH-240 NG ASME Combiflow
E1396
CH-240 LP ASME Combiflow
PREMIUM CONDENSING
TANKLESS GAS WATER
HEATER (NPE)
½" Gas Pipe Capable up to 24’
• ½” Gas pipe capable up to 24’
• Field convertible gas system
• Ultra condensing efficiency
• Dual stainless steel heat exchangers
• Low NOx emissions (≤ 20ppm)
• SCH 40, 2” venting up to 60’
• Cascading capable
• Indoor or Outdoor Wall-Hung
• Forced Draft Direct Vent
• Electronic Ignition
• 15-150 PSI Water Pressure
Natural Gas Supply
Pressure (from source)
3.5"-10.5" WC
Propane Gas Supply
Pressure (from source)
8"-13" WC
Minimum Flow Rate
0 GPM (0 L/m)
Cold Water Inlet
3/4" NPT
Hot Water Outlet
3/4" NPT
Recirculation Inlet
3/4" NPT
Gas Inlet
3/4" NPT (Suitable for
use with 1/2" rigid gas
pipe; refer to installation
manual for sizing criteria)
Main Supply
120 V AC, 60Hz
Maximum Power
Consumption
200 W (up to 2 amperes)
Vent Clearances
0" to Combustibles
Locke#
E1392
NPE180A NAT-L.P. 15k-150k
BTU/h
E1393
NPE210A NAT-L.P. 19.9k-180k
BTU/h
E1394
NPE240A NAT-L.P. 19.9k-199.9k
BTU/h