Specification

12/20 FORM NO. THD-3197 Rev. 2
In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.
Rheem Water Heating • 1115 Northmeadow Parkway, Suite 100
Roswell, Georgia 30076 • www.rheem.com
Condensing Tankless Specifications
DESCRIPTION FEATURES ROUGHING IN DIMENSIONS (SHOWN IN INCHES) ENERGY INFO.
MODEL
NUMBER
GAS
INPUT
BTU/H TYPE
NUMBER
OF
BATHROOMS*
TEMP.
RANGE
MIN. FLOW/
ACTIVATION
GPM
GPM
@ 67°
RISE
MAX.
GPM
@45°
RISE
MAX.
GPM
@35°
RISE
MAX.
CONNECTION
HEIGHT WIDTH DEPTH
VENT
DIAM.
SHIP
WEIGHT
(LBS.)
UNIFORM
ENERGY
FACTOR
(UEF) WATER GAS
ECOH200DVLN-2
11,000-
199,900
Indoor
Direct Vent
4
85° to
140° F
0.26/0.40 5.7 8.5 9.5 3/4 3/4 27-1/2 18-1/2 9-3/4
2" or 3"
PVC 2-Pipe
82 0.93
ECOH200DVELN-2
(EcoNet
®
Included)
11,000-
199,900
Indoor
Direct Vent
4
85° to
140° F
0.26/0.40 5.7 8.5 9.5 3/4 3/4 27-1/2 18-1/2 9-3/4
2" or 3"
PVC 2-Pipe
82 0.93
ECOH200XLN-2
11,000-
199,900
Outdoor 4
85° to
140° F
0.26/0.40 5.6 8.5 9.5 3/4 3/4 27-1/2 18-1/2 9-3/4 N/A 82 0.93
ECOH200XELN-2
(EcoNet
®
Included)
11,000-
199,900
Outdoor 4
85° to
140° F
0.26/0.40 5.6 8.5 9.5 3/4 3/4 27-1/2 18-1/2 9-3/4 N/A 82 0.93
ECOH180DVLN-2
11,000-
180,000
Indoor
Direct Vent
3 - 4
85° to
140° F
0.26/0.40 5.2 7.7 9.0 3/4 3/4 27-1/2 18-1/2 9-3/4
2" or 3"
PVC 2-Pipe
82 0.93
ECOH180DVELN-2
(EcoNet
®
Included)
11,000-
180,000
Indoor
Direct Vent
3 - 4
85° to
140° F
0.26/0.40 5.2 7.7 9.0 3/4 3/4 27-1/2 18-1/2 9-3/4
2" or 3"
PVC 2-Pipe
82 0.93
ECOH180XLN-2
11,000-
180,000
Outdoor 3 - 4
85° to
140° F
0.26/0.40 5.2 7.7 9.0 3/4 3/4 27-1/2 18-1/2 9-3/4 N/A 82 0.93
ECOH180XELN-2
(EcoNet
®
Included)
11,000-
180,000
Outdoor 3 - 4
85° to
140° F
0.26/0.40 5.2 7.7 9.0 3/4 3/4 27-1/2 18-1/2 9-3/4 N/A 82 0.93
ECOH160DVLN-2
11,000-
157,000
Indoor
Direct Vent
3
85° to
140° F
0.26/0.40 4.6 6.7 8.4 3/4 3/4 27-1/2 18-1/2 9-3/4
2" or 3"
PVC 2-Pipe
82 0.93
ECOH160XLN-2
11,000-
157,000
Outdoor 3
85° to
140° F
0.26/0.40 4.5 6.7 8.4 3/4 3/4 27-1/2 18-1/2 9-3/4 N/A 82 0.93
Indoor Direct Vent
Outdoor
Parts and Accessories
Venting & terminations – 2" or 3" PVC, recess boxes, pipe covers, extra r emote controls, EZ-Link
™
cable, manifolds and cables, service valve kits,
service parts, flush kits, recirculation pump kits and AllClear
™
water treatment system. For more information on Tankless parts and accessories, see
the Parts and Accessories Catalog or call 866-720-2076.
* Based on simultaneous showers using 2.5 GPM ow rate pre-mixed with cold water line. Flow rates vary depending on
temperature of incoming cold water and water heater set temperature. Refer to ow rate curves for accurate sizing.
Uniform Energy Factor and Energy Factor based on Department of Energy (D.O.E.) requirements.
All models are available in Natural Gas and Propane (LP). For Propane replace the N with P when ordering.
SCAQMD 1146.2 compliant.
Factory set maximum temperature is 120° F. See Use and Care Manual for setting.
Consult factory for information on sizing the application.
Vent Termination Kits are required for Direct Vent models. Contact your distributor for details.
Proper gas pressure must be ensured to supply tankless gas water heaters – up to 199,900 BTU/h for ECOH200 models,
up to 180,000 BTU/h for ECOH180 models, up to 157,000 BTU/h for ECOH160 models. (Consult your gas supplier)
Temperature Rise (° F)
Model Number 35° 45° 50° 60° 67° 70° 80° 90° 100°
ECOH200 Water Flow (GPM) 9.5 8.5 7.7 6.4 5.7 5.5 4.8 4.3 3.8
ECOH180 Water Flow (GPM) 9.0 7.7 6.9 5.8 5.2 4.9 4.3 3.8 3.5
ECOH160 Water Flow (GPM) 8.4 6.7 6.0 5.0 4.6 4.3 3.8 3.3 3.0
Above estimates are for sizing purposes only.
1
Based on Rheem testing of 1/2" gas line with gas supply of 7" w.c. up
to 24'; Installation conditions vary; Consult the Rheem
®
Use and Care
Manual, the Rheem
®
Gas Piping Facts brochure (TK-GPF-12), the
National Fuel Gas Code (NFPA 54, ANSI Z223.1), and any other local
gas codes when installing a Rheem Tankless Water Heater.
2
Contact customer service for exact altitude rating for each model.
3
Pump kit designed for single unit applications only.
4
Savings based on DOE test procedures.
29
1
/4"
(743 mm)
27
5
/8"
(702 mm)
3
3
/8"
(86 mm)
5
1
/2"
(140 mm)
6
1
/4"
(159 mm)
17
7
/
8
"
(454 mm)
18
5
/8"
(473 mm)
9
3
/4"
(248 mm)
2
1
/4"
(59 mm)
5
1
/2"
(140 mm)
6
1
/8"
(156 mm)
2
1
/8"
(54 mm)
3
7
/8"
(98 mm)
2
7
/8"
(73 mm)
4
1
/8"
(105 mm)
9
1
/2"
(241 mm)
1
1
/2"
(38 mm)
17
7
/8"
(454 mm)
18
5
/8"
(473 mm)
27
5
/8"
(702 mm)
9
3
/4"
(248 mm)
2
1
/4"
(59 mm)
5
1
/2"
(140 mm)
6
1
/8"
(156 mm)
2
1
/8"
(54 mm)
3
7
/8"
(98 mm)2
7
/8"
(73 mm)
4
1
/8"
(105 mm)
9
1
/2"
(241 mm)
1
1
/2"
(38 mm)
10
9
8
7
6
5
4
3
2
1
0
Water Heater Flow Rate Curves
Delta T(F)
Flow Rate (GPM)
0 10 20 30 40 50 60 70 80 90 100
ECOH200 Max Flow
ECOH180 Max Flow
ECOH160 Max Flow
Maximum Vent Length (intake/outlet):
NUMBER
OF 90°
ELBOWS
MAXIMUM
LENGTH
OF 2"
STRAIGHT
PIPE*
MAXIMUM
LENGTH
OF 3"
STRAIGHT
PIPE
0 60 ft. 150.0 ft.
1 57 ft. 148.5 ft.
2 54 ft. 147.0 ft.
3 51 ft. 145.5 ft.
4 48 ft. 144.0 ft.
5 45 ft. 142.5 ft.
6 42 ft. 141.0 ft.
* Dip switch setting change required to achieve 60 ft.
maximum vent length on 2" straight pipe. Max length
for 2" straight pipe is 22 ft. with factory default settings.