Rheem CRTGH-68DVLN Residential Gas CRTGH Series Tankless Water Heaters Owner’s Manual
- June 13, 2024
- Rheem
Table of Contents
Rheem CRTGH-68DVLN Residential Gas CRTGH Series Tankless Water Heaters
Owner’s Manual
Rheem® CRTGH Series Super High Efficiency Condensing Tankless Gas Water Heaters
Easy Installation
- PVC Vent runs up to 60′ (2″), 150′ (3″)
- Enhanced design is up to 20% smaller and lighter making one-person installs even easier
Ready for Retrofits
- Industry Best! 1/2″ side to side clearance allows you to safely work in spaces the competition can’t
- 1/2″ Gas line compatibility (subject to local code)
Key Features
- Rheem® Exclusive! Hot-start Programming™ ensures the unit is in a ready state between back-to-back usage, minimizing any cold water bursts
- Built-in EcoNet® Wi-Fi technology for direct control from your device (on select models)
- LeakGuard® – All-inclusive leak detection and prevention system that detects any leak that comes from the unit (on select indoor with Wi-Fi models)
Specifications
Rheem Model Number| CRTGH-68DVLN-3| CRTGH-84DVLN-3| CRTGH-
90DVLN-3| CRTGH-95DVLN-3 CRTGH-95DVELN-3
---|---|---|---|---
Built-in LeakGuard ™ Model Number| | CRTGH-95DVELN-3 (Wi-
Fi Model)
Gas Input Rate| MAX| 120,000 BTU/h| 157,000 BTU/h| 180,000
BTU/h| 199,900 BTU/h
MIN| 11,000 BTU/h| 11,000 BTU/h| 11,000 BTU/h| 11,000 BTU/h
Uniform Energy Factor (UEF)| 0.90| 0.93
Gallons Per Minute (GPM)| MAX (35°F)| 6.6| 8.4| 9.0| 9.5
45°F Rise| 5.1| 6.7| 7.7| 8.5
67°F Rise| 3.4| 4.6| 5.2| 5.7
Number of Bathrooms 1| 2.5| 3| 3 – 4| 4
Temp. Range| 100°F – 140°F
Temp. Setting from Factory| 120°F
High Temp. Upgrade Available| No
Freeze Protection| -30°F Air Intake2, -4°F Ambient
Installation Type| Indoor
Heat Exchanger Material| Primary: Copper – Secondary: Stainless Steel
Minimum Activation Flow| 0.4 GPM
Minimum Continuous Flow| 0.26 GPM
Maximum Altitude| 7,800 ft.
Warranty| 15 year Heat Exchanger | 5-Year Parts | 1-Year Labor
Height| 23.7″
Width| 17.7″
Depth| 9.8″
Weight (Lbs.)| 52.9
Venting Diam. Allowed| 2″ / 3″
Max. Single Vent Run (straight pipe)| 60 ft (2″) / 150 ft (3″)
Venting Materials| ULC-S636 PVC, CPVC, Polypropylene
Manifold Controls (max. units)| 6 Units3
Controls| Built-in digital display
Power Supply| 120V 60Hz
Max. Power Consumption| 85W (Normal use), 0.7 Amps 132W (Antifreeze),
1.1 Amps 3.5W (Standby), 0.03 Amps4
Gas Connection| 3/4″ NPT
Hot Water Connection| 3/4″ NPT
Cold Water Connection| 3/4″ NPT
Condensate Connection| 1/2″ NPT
Vent Connections Diameter| 2″ Band Connections (Adapter required to
vent with 3″ PVC from unit)
All models are available in Natural Gas or Propane (LP). For Propane replace the N with P for LP model.
Clearances
Top / Bottom| 12″
Front| 1/2″5
Sides| 1/2″
Back / From Vent Pipe| 0″
1 Based on simultaneous showers using 2.5 GPM flow rate pre-mixed with cold water line. Flow rates vary depending on temperature of incoming cold water and water heater set temperature. Refer to flow rate curves for accurate sizing. 2 For indoor application, this is the temperature of outdoor intake air. 3 Manifolds with standard RJ11 communication cables. 4 If anti freeze is on and combustion is on, total W will be 217W (85+132). 5 Recommended 24″ clearance for service.
Water Heater Flow Rate Curves
Water Flow (GPM)
Temperature Rise (°F)
| Model Number **** 35° | 45° | 50° | 60° | 67° | 70° | 80° | 90° | 100° |
|---|---|---|---|---|---|---|---|---|
| CRTGH-95DVL-3 9.5 | 8.5 | 7.7 | 6.4 | 5.7 | 5.5 | 4.8 | 4.3 | 3.8 |
| CRTGH-90DVL-3 9.0 | 7.7 | 6.9 | 5.8 | 5.2 | 4.9 | 4.3 | 3.8 | 3.5 |
| CRTGH-84DVL-3 8.4 | 6.7 | 6.0 | 5.0 | 4.6 | 4.3 | 3.8 | 3.3 | 3.0 |
| CRTGH-68DVL-3 6.6 | 5.1 | 4.6 | 4.6 | 3.4 | 3.3 | 2.9 | 2.6 | 2.3 |
Above estimates are for sizing purposes only.
Venting
SINGLE UNIT: MAX. EQUIVALENT VENT LENGTHS – STRAIGHT PIPE
Number of 90 Elbows| Max Length 2″ straight pipe|
Max. length 3″ straight pipe
0| 60 ft. (18.3 m)| 150 ft. (45.7 m)
1| 54 ft. (16.5 m)| 144 ft. (43.9 m)
2| 48 ft. (14.6 m)| 138 ft. (42.7 m)
3| 42 ft. (12.8 m)| 132 ft. (40.2 m)
4| 36 ft. (11.0 m)| 126 ft. (38.4 m)
5| 30 ft. (9.1 m)| 120 ft. (36.6 m)
6| 24 ft. (7.3 m)| 114 ft. (34.7 m)
Min. Vent Length Straight Pipe
Number of 90° Elbows| Min. Length 2″ 3″ pipe
1| 1.0 ft (0.3 m)
Equivalent Ft. of Elbows
| 2″ Pipe| 3″ Pipe
90° Elbow| 6 ft (1.83 m)| 6 ft (1.83 m)
45° Elbow| 3 ft. (0.9 m)| 3 ft. (0.9 m)
Hanging bracket included with water heater.
Parts & Accessories
For more information on Tankless parts and accessories, see the Parts and Accessories Catalog or call 866-720-2076.
Dimensions
TOP VIEW
BOTTOM VIEW
CRTGH Series Models
Indoor Models
11,000-199,900 BTU/h
Natural Gas and
Liquid Propane Models*