R E S I D E N T I A L
GAS TANKLESS HIGH EFFICIENCY
CONDENSING MODELS
FEATURES
Safety Features:
• Air-Fuel Ratio (AFR) Sensor
• Exhaust & Water Temperature
Safety Control
• Overheat Cutoff Fuse
Internal Freeze
Protection System
Power Direct Vent Design
• 4" Pipe Vents up to 50
Equivalent Feet or 3" Pipe Vents up
to 25 Equivalent Feet
• Uses Inexpensive PVC, CPVC, or
ABS Pipe for Venting (solid core
only). Canadian Installations Require
ULCS636 Listed PVC or CPVC Pipe
for Venting.
• Category III Stainless Steel Venting
can also be used
Accessories
• RemoteTemperature Controller
• Pipe Cover
• Neutralizer Kit
• Plumbing Installation Kits
• PVC Intake Adaptor
• Concentric Termination
INDOOR MODELS
GTS-320-NIH, GTS-320-PIH
Condensing Technology
Provides Significant Energy
Cost Savings
Secondary Heat Exchanger
is Made of Type 316L
Stainless Steel
• Provides additional protection
against corrosion
Durable Copper Primary
Heat Exchanger
Continuous Maximum Flow
Rates up to 8.0 GPM
®
ENERGY STAR
Qualified
Electronic IgnitionNo Pilot Light
Built-In Display Shows
Operating Temperature
Along with Diagnostic and
Error Codes
Low NOx Emissions
Complies with Lead
Plumbing Law
Outdoor Models include
OUTDOOR MODELS
GTS-320-NEH, GTS-320-PEH
Remote Control as a
standard feature
Indoor Models include
Remote Control and
Power Cord as
standard features
ANSI Z21.10.3 CSA 4.3
For more information on Tankless Condensing Units, contact:
State Water Heaters
500 Tennessee Waltz Parkway
Ashland City, TN 37015
1-877-737-2840 Toll-free USA
www.statewaterheaters.com
Warranty
• 12-year limited warranty on heat
exchanger in residential applications
• 5-year warranty on all parts
SRGSS04311
CONDENSING MODELS
R E S I D E N T I A L
GAS CONSUMPTION INPUT INLET GAS PRESSURE
DIMENSIONS IN INCHES
SHIPPING
MODEL
NUMBER
FUEL
TYPE
MINIMUM
BTU/H
MAXIMUM
BTU/H
MINIMUM
W.C.
MAXIMUM
W.C. HEIGHT WIDTH DEPTH
ENERGY
FACTOR
MAX
GPM*
HOT/COLD
GAS CONN.
INDOOR MODELS
GTS-320-NIH Natural 13,000 180,000 5.0 10.5 0.91 8.0 3/4” NPT 25-3/5 18-1/2 12-2/5 73
GTS-320-PIH Propane 13,000 180,000 8.0 14.0 0.91 8.0 3/4” NPT 25-3/5 18-1/2 12-2/5 73
OUTDOOR MODELS
GTS-320-NEH Natural 13,000 180,000 5.0 10.5 0.91 8.0 3/4” NPT 25-3/5 18-1/2 12-2/5 70
GTS-320-PEH Propane 13,000 180,000 8.0 14.0 0.91 8.0 3/4” NPT 25-3/5 18-1/2 12-2/5 70
All dimension in inches.
15-150 psi Water Pressure. 40 psi or above recommended for maximum flow.
*Current numbers based on factory testing; 0.4 GPM required for continuous fire after initial ignition.
OUTDOOR MODELS
4-1/2" (115mm)
120VAC 2-1/4" (58.2mm)
18-1/2" (470mm)
12-1/2" (320mm)
1-1/4" (29.2mm) COLD
4-5/8" (116.8mm) GAS
6-1/4" (159.1mm)HOT 5-5/8" (142.2mm)
Condensate drain port
6-1/4" (161.5mm)
1/2" (12.5mm)
GAS 6" (153.6mm)
HOT 7-1/4" (182.1mm)
120VAC 8-1/2" (216.3mm)
COLD 8-5/8" (220.6mm)
10-1/2" (266.8mm)
Condensate Drain Port
CLEARANCES: Top: 12”; Bottom: 12”; Front: 4”; Back: .05”; Sides: 3”
25-1/2" (649mm)
12-1/2" (316mm)
INDOOR MODELS
Male Ø4" (100.8mm)
6-5/8" (168.4mm)
120VAC 2-1/4" (58.2mm)
HOT 5-5/8" (142.2mm)
2-3/4" (69.1mm) INTAKE
18-1/2" (470mm)
12-1/2" (320mm)
3-1/2" (90mm)
Ø4" (102mm) Female
3/4" (18.8mm)
2-3/4" (71.8mm) EXHAUST
1-1/4" (29.2mm) COLD
4-5/8" (116.8mm) GAS
6-1/4" (159.1mm)
Condensate Drain Port
29-1/2" (751mm)
1/2" (12.5mm)
GAS 6" (153.6mm)
HOT 7-1/4" (182.1mm)
120VAC 8-1/2" (216.3mm)
COLD 8-5/8" (220.6mm)
10-1/2" (266.8mm)
Condensate drain port
CLEARANCES: Top: 36”; Bottom: 12”; Front: 4”; Back: .05”; Sides: 3”
12-1/2"
(316mm)
25-1/2" (649mm)
APPROX.
WEIGHT
(LBS)
3-1/2" (90mm)
4-1/2" (115mm)
29-1/2" (751mm)
Flow Rate Vs. Temperature Rise
9.0
8.0
7.0
6.0
5.0
4.0
3.0
Flow Rate (gpm)
2.0
1.0
0.0
0 20 40 60 80 100 120 140
Temperature Rise (°F)
Set Temperature : 125°F & lower
Set Temperature : 130 & higher
°F
Pressure Loss
30
25
20
15
10
Pressure Loss (psi)
5
0
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
Flow Rate (gpm)
Set Temperature : 125°F & lower
Set Temperature : 130 & higher
°F
80
70
60
50
40
Head Feet
30
20
10
0
For complete information on limited warranties, consult written warranty or contact technical support at 1-877-737-2840.
State Industries, Inc., reserves the right to make product changes or improvements without prior notice.
For more information on Tankless Condensing Units, contact:
State Water Heaters
500 Tennessee Waltz Parkway
Ashland City, TN 37015
1-877-737-2840 Toll-free USA
www.statewaterheaters.com
SRGSS04311 © 2012 State Industries, Inc. Printed in U.S.A