Page 1
RESIDENTIAL/COMMERCIAL
TANKLESS HIGH EFFICIENCY
CONDENSING WATER HEATERS
FEATURES
INDOOR MODELS
GTS-240, GTS-340, GTS-540
Ultra-Low NOx Condensing
Technology Provides
Unprecedented 0.9 5
Energy Factor
Durable Heat Exchanger
• Primary Heat Exchanger is constructed of
HRS35 Commercial-Grade Copper which is
more resilient against erosion
• Secondary Heat Exchanger is made of
Type 316L Stainless Steel to protect
against corrosion
Continuous Maximum Flow
Rates up to 10.0 GPM
ENERGY STAR
®
Qualified
Available in Natural Gas or
Propane (LP)
GTS -540-NIH & GTS -540-NEH
Can be used in both Residential
and Commercial Applications
Electronic Ignition - No
Pilot Light
Easy-Link up to 4 Units
(G TS-540 Models Only)
• With no additional parts or accessories needed
Multi-Link up to 20 Units
(G TS-540 Models Only)
Complies with Lead
Free Standards
Safety F e at ur e s:
• Air-Fuel Ratio (AFR) Sensor
• Exhaust & Water T emperatur e Safety Control
• Overheat Cut-O ff Fuse
Internal Freeze
Protection System
Power Direct Vent Design
• Exhaust, 3" PVC Venting up to 70 Feet or
4" PVC Venting up to 100 Feet
• Provides flexible venting with PVC, CPVC,
or ABS Pipe for Intake and Exhaust (solid
core only). Canadian Installations Require
ULCS636 Listed PVC or CPVC Pipe
for Venting.
• Category III Stainless Steel venting can
also be used
OUTDOOR MODELS
GTS-240, GTS-340, GTS-540
Indoor Model - Includes a
Built-In T emperature Controller
and Advanced Diagnostics to
Simplify T roubleshooting
Outdoor Model - Includes a
Wall Mount Temperature Remote
Controller and Advanced
Diagnostics to Simplify
GTS 540
model only
Tr ouble shooting
Factory-Installed Pow er Cord
Included for Indoor Models
®
ANSI Z21.10.3 CSA 4.3
For more information on Tankless Condensing Water Heaters contact:
State Water Heaters
500 Tennessee Waltz Parkway
Ashland City, TN 37015
800.365.0024 Toll-free USA
www.statewaterheaters.com
Accessories
• Pipe Cover
• Neutralizer Kit
• Isolation Valve Kits
• Concentric Termination
Warranty
• 12-year limited warranty on heat exchanger in
residential applications
• 5-year limited warranty on heat exchanger in
commercial applications
• 5-year limited warranty on all parts
SRGSS05012
Page 2
RESIDENTIAL/COMMERCIAL
TANKLESS HIGH EFFICIENCY CONDENSING MODELS
GAS CONSUMPTION
INPUT
MODEL
NUMBER
INDOOR
GTS-240-NIH Natural 15,000 160,000 5.0 10.5 0.95 6.6 3/4” NPT 22-1/2 17-3/4 10-3/4 58
GTS-240 PIH Propane 13,000 160,000 8.0 14.0 0.95 6.6 3/4” NPT 22-1/2 17-3/4 10-3/4 58
GTS-340-NIH Natural 15,000 180,000 5.0 10.5 0.95 8.0 3/4" NPT 22-1/2 17-3/4 10-3/4 58
GTS-340-PIH Propane 13,000 180,000 8.0 14.0 0.95 8.0 3/4" NPT 22-1/2 17-3/4 10-3/4 58
GTS-540-NIH Natural 15,000 199,000 5.0 10.5 0.95 10.0 3/4" NPT 22-1/2 17-3/4 10-3/4 59
GTS-540-PIH Propane 13,000 199,000 8.0 14.0 0.95 10.0 3/4" NPT 22-1/2 17-3/4 10-3/4 59
OUTDOOR
GTS-240-NEH Natural 15,000 160,000 5.0 10.5 0.95 6.6 3/4” NPT 22-1/2 17-3/4 10-3/4 58
GTS-240-PEH Propane 13,000 160,000 8.0 14.0 0.95 6.6 3/4” NPT 22-1/2 17-3/4 10-3/4 58
GTS-340-NEH Natural 15,000 180,000 5.0 10.5 0.95 8.0 3/4" NPT 22-1/2 17-3/4 10-3/4 58
GTS-340-PEH Propane 13,000 180,000 8.0 14.0 0.95 8.0 3/4" NPT 22-1/2 17-3/4 10-3/4 58
GTS-540-NEH Natural 15,000 199,000 5.0 10.5 0.95 10.0 3/4" NPT 22-1/2 17-3/4 10-3/4 59
GTS-540-PEH Propane 13,000 199,000 8.0 14.0 0.95 10.0 3/4" NPT 22-1/2 17-3/4 10-3/4 59
All dimensions are in inches.
15-150 psi Water Pressure. 40 psi or above is recommended for maximum flow.
*Current numbers based on factory testing; 0.4 GPM required for continuous fire after initial ignition.
Indoor models are certified from sea level to 10,100 ft. elevations.
In accordance with ANSI Z21.10.3, CO emission does not exceed 400 PPM for normal input.
The manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligation.
FUEL
TYPE
MINIMUM
BTU/H
MAXIMUM
BTU/H
INLET GAS
PRESSURE
MINIMUM
W.C.
MAXIMUM
W.C.
ENERGY
FACTOR
MAX
GPM*
HOT/COLD
AND
GAS CONN.
DIMENSIONS IN INCHES
A
HEIGHTBWIDTHCDEPTH
UNIT
WEIGHT
(LBS)
SRGSS05012 Page2of6
Page 3
4" (102 mm)
∅
Female
24-7/8" (631 mm)
23-5/8" (600 mm)
17-3/4" (450 mm)
7" (180 mm)
6-1/4" (159mm)
RESIDENTIAL/COMMERCIAL
INDOOR MODEL
4" (101 mm)
4" (102 mm)
∅
Female
11-1/4" (285 mm)
22-1/2" (570 mm)
5-3/4" (147 mm)
Intake
2-5/8" (68 mm)
2-5/8" (65 mm)
Exhaust
10-3/4" (272mm)
HOT 4-3/4" (120 mm)
Drain port
6-3/4" (170 mm)
HOT 4-3/4" (120 mm)
120 VAC 6-7/8" (174 mm)
HOT 5-1/2" (140 mm)
COLD 5/8" (17 mm)
120 VAC 3" (77 mm)
GAS 5-3/4" (147 mm)
Condensate drain port
7-1/2" (189 mm)
Condensate drain port
7-1/2" (189 mm)
GAS 5-7/8" (147 mm)
120 VAC 3" (77 mm)
GAS 5-1/8" (131 mm)
COLD 5/8" (17 mm)
COLD 6-3/4" (172 mm)
Condensate drain port
7-7/8" (199 mm)
1/2 (13 mm)
GAS 5-1/8" (131 mm)
HOT 5-1/2" (140 mm)
Drain port 6" (152 mm)
COLD 6-3/4" (172 mm)
120 VAC 6-7/8" (174 mm)
Condensate drain port
7-7/8" (199 mm)
17-5/8" (448 mm)
5-3/4" (147 mm)
6-1/4" (159 mm)
SRGSS05012 Page3of6
Page 4
RESIDENTIAL/COMMERCIAL
OUTDOOR MODEL
17-3/4" (450 mm)
7" (180 mm)
4-1/2" (114 mm)
1-1/2" (37 mm)
3-5/8" (92 mm)
24-7/8"(631mm)
23-5/8" (600 mm)
1
22-1/2" (570 mm)
1-1/4" (285 mm)
11" (281 mm)
10-3/4" (272 mm)
HOT 4-3/4" (120 mm)
120 VAC 6-1/4" (159 mm)
Drain port
6-3/4" (170 mm)
HOT 4-3/4" (120 mm)
HOT 5-1/2" (140 mm)
120 VAC 3" (77 mm)
120 VAC
6-1/4" (159 mm)
COLD 5/8" (17 mm)
GAS 5-3/4" (147 mm)
Condensate drain port
7-1/2" (189 mm)
Condensate drain port
7-1/2" (189 mm)
COLD 5/8" (17 mm)
GAS 5-1/8" (131 mm)
COLD 6-3/4" (172 mm)
Condensate drain port
1/2" (13 mm)
120VAC3"(77mm)
GAS (131 mm)
HOT (140 mm)
Drain port 6" (152 mm)
COLD 6-3/4" (172 mm)
Condensate drain port
7-7/8" (199 mm)
17-5/8" (448 mm)
7-7/8" (199 mm)
SRGSS05012 Page 4 of 6
Page 5
RESIDENTIAL/COMMERCIAL
FLOW RATE vs TEMPERATURE RISE
GTS-240
Flow Rate vs.Temperature Rise Flow Rate vs.Temperature Rise
11. 0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
Flow Rate (GPM)
3.0
2.0
1.0
0.0
0 20406080100
Temperature Rise (°F)
GTS-540
11. 0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
Flow Rate (GPM)
3.0
2.0
1.0
0.0
0 20406080100120140
Flow Rate vs.Temperature Rise
Temperature Rise (°F)
Temperature Rise (˚F)
Set temperature 125˚F (52˚C) or lower
Set temperature 130˚F (55˚C) or
GTS-340
11. 0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
Flow Rate (GPM)
3.0
2.0
1.0
0.0
0 20406080100
Temperature Rise (°F)
higher
SRGSS05012 Page 5 of 6
Page 6
RESIDENTIAL/COMMERCIAL
Set temperature 130˚F (55˚C) or higher
PRESSURE LOSS
GTS-240
50
45
40
35
30
25
20
Pressure Loss (psi)
15
10
5
0
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
Pressure Loss
Flow Rate (GPM)
50
45
40
35
30
25
20
Pressure Loss (psi)
15
10
5
0
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0
120
100
80
60
Head (Feet)
40
20
0
50
45
40
35
30
25
20
Pressure Loss (psi)
15
0
1
5
0
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
GTS-540
Pressure Loss
Flow Rate (GPM)
Flow rate (GPM)
Set temperature 125˚F (52˚C) or lower
GTS-340
Pressure Loss
Flow Rate (GPM)
120
100
80
60
Head (Feet)
40
20
0
120
100
80
60
40
20
0
Head (Feet)
Water heater(s) shall be Model_____________________ as manufactured by State Water Heaters, shall be a copper coil integral fin and tube construction with quick release brass
or bronze waterways. Heater(s) will be factory assembled and tested.
The heater shall be vented with 3” or 4” Schedule 40 PVC, CPVC, or ABS vent pipe, or stainless steel Category III vent pipe at a distance not to exceed 70’ (equivalent) for
3” vent or 100’ (equivalent) for 4” vent, terminating vertically or horizontally as prescribed. Intake air pipe may be of such material as ABS, PVC, galvanized B-Vent, corrugated
aluminum or stainless steel, or Category lll / IV stainless steel not to exceed 70’ (equivalent) for 3” vent or 100’ (equivalent) for 4” vent.
The heater(s) shall be controlled by an onboard solid-state printed circuit board monitoring incoming and outgoing temperatures with factory installed thermistors, sensing
and controlling flow rate to set point temperature, controlling both air and gas mixture inputs to maintain thermal combustion efficiency. The heater(s) shall also consist of
inline fusing, a spark ignition and sensor system, aluminized stainless steel burners, an air-fuel ratio sensor, a hi-limit temperature switch, modulating and proportional gas
valves, a freeze protection sensor with ceramic heating blocks, and an overheat cutoff fuse.
The water heater(s) shall be CSA listed, exceed the energy efficiency requirements of ASHRAE 90.1b-1992, and shall comply with SCAQMD Rule 1146.2 Ultra-Low NOx Standards.
For complete information on limited warranties, consult written warranty or contact technical support at 1-800-365-0024.
State Industries, Inc., reserves the right to make product changes or improvements without prior notice.
For more information on Tankless Condensing Water Heaters contact:
State Water Heaters
500 Tennessee Waltz Parkway
Ashland City, TN 37015
800.365.0024 Toll-free USA
www.statewaterheaters.com
SRGSS05012 © 2012 State Industries, Inc. Printed in U.S.A
Specification
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