Richmond Encore® L-Series Super High-Efficiency Condensing Combi Boilers
Model Numbers: RMCBH-L125i, RMCBH-L160i, RMCBH-L199i
Product Overview
The Richmond Encore® L-Series represents a line of super high-efficiency condensing combi boilers designed for optimal heating and domestic hot water performance. These units are ENERGY STAR certified and offer advanced features for efficiency and ease of installation.
Flexible Installation Features
- Moveable combustion air intake (left/right) with the ability to flex vent in existing B-vent.
- Extra-long pipe fittings with notched sides for easy gripping with a wrench.
- Features only 5 moving parts: Fan, Bypass Valve, Pump, Gas Valve, and Damper.
- Universal shared platform parts allow for easy diagnosis and service using common parts across all L-Series units.
Key Features
- Innovative Labyrinth Heat Exchanger with two independent copper waterways for maximum heat transfer and minimal heat loss.
- Built-in ECM variable speed, high-efficiency boiler pump.
- Integrated illuminated touchscreen control panel.
- Outdoor reset technology automatically increases efficiency by lowering water temperature.
- Wireless cascading capability using RF balances workload of units for longer life.
- The only Combi Boilers that can be wirelessly cascaded for both space heating and domestic hot water.
Specifications
| Specification | RMCBH-L125i | RMCBH-L160i | RMCBH-L199i |
|---|---|---|---|
| Input Rate (Heating Mode) MAX | 99,000 BTU/h | 125,000 BTU/h | 125,000 BTU/h |
| Input Rate (Heating Mode) MIN | 16,500 BTU/h | 23,000 BTU/h | 28,500 BTU/h |
| Output Rate (Heating Mode) MAX | 89,000 BTU/h | 111,000 BTU/h | 111,000 BTU/h |
| Output Rate (Heating Mode) MIN | 15,800 BTU/h | 22,000 BTU/h | 27,100 BTU/h |
| Input Rate (Domestic Hot Water) MAX | 125,000 BTU/h | 160,000 BTU/h | 199,000 BTU/h |
| Input Rate (Domestic Hot Water) MIN | 16,500 BTU/h | 23,000 BTU/h | 28,500 BTU/h |
| AFUE | 95% | 94% | 95% |
| Gas Pressure (Nat Gas or LP gas) MAX | 14" WC | ||
| Gas Pressure (Nat Gas or LP gas) MIN | 4" WC | ||
| Power Supply | 120V/60Hz | ||
| Weight lbs. (empty) | 85 | 84 | 84 |
| Pressure vessel water content - USG MAX | 0.5 | 0.19 | 0.19 |
| Boiler Flow Rate - GPM MIN | 10 | 11 | 12 |
| Water Pressure MAX (DHW) | 150 psi | ||
| Water Pressure MAX (Heating) | 43.5psi | ||
| Water Pressure MIN (DHW) | 40psi | ||
| Water Pressure MIN (Heating) | 8psi | ||
| Maximum Altitude | 10,100 ft | 10,100 ft | 10,100 ft³ |
| Ambient temperature - Low (°F) | 32°F | ||
| Ambient temperature - High (°F) | 122°F | ||
| Max relative humidity (non-condensing) | 90% | ||
| Temp Range Heating Mode | 51°F-194°F | ||
| Temp Range Domestic Hot Water | 105°F-149°F | ||
| Minimum Activation Flow Rate (DHW) | 0.5 GPM | ||
| Gallons per Minute - GPM (Domestic Hot Water) MAX | 4 | 7 | 5 |
| Gas Connection | 3/4" Male NPT | ||
| Domestic Hot Water Connection | 3/4" Male NPT | ||
| Heating Connection | 1" Male NPT | ||
| Max equivalent vent length 2" (each side)² | 65' | ||
| Max equivalent vent length 3" (each side)³ | 120' | ||
| Ultra Low NOx | Meets 14ng/J NOx requirements - SCAQMD Rule 1146.2 compliant | ||
| Warranty¹ | 10-Year Heat Exchanger, 5-Year Parts, 1-Year Labor | ||
¹See Warranty Certificate for complete information. ²Approximate input derate of 10-16% at 2" maximum vent length. ³Natural Gas only, LP is 7,800 ft.
Venting Specifications
| VENTING Material | MAXIMUM EQUIVALENT LENGTH (each side)² |
|---|---|
| Schedule 40 PVC, CPVC or Polypropylene 2" | 65' |
| Schedule 40 PVC, CPVC or Polypropylene 3" | 120' |
| 2" or 3" 90° Long Sweep Vent Elbow | Allow 5 equivalent feet |
| 2" or 3" 90° Short Sweep Vent Elbow | Allow 8 equivalent feet |
| 2" or 3" 45° Vent Elbow | Allow 3 equivalent feet |
| Polypropylene PPs 87-90° Elbow | Allow 8 equivalent feet |
| Flex PPS 3" PPs Flex | 35' Actual (Equivalent = Actual x 1.4) |
²Approximate input derate of 10-16% at 2" maximum vent length.
Installation Clearances
| SURFACE | MIN. DISTANCE FROM COMBUSTIBLE SURFACES | RECOMMENDED DISTANCE FOR INSTALLATION AND SERVICE |
|---|---|---|
| Front | 2" | 24" |
| Rear | 0" | 0" |
| Left Side | 1.5" | 6" |
| Right Side | 4" | 6" |
| Top | 2" | 24" |
| Bottom | 8" | 24" |
Piping Connections
| Label | Connection Type | DIMENSION |
|---|---|---|
| A | Exhaust Outlet | 2" Schedule 40 PVC |
| B | Combustion Air Inlet | 2" Schedule 40 PVC |
| C | Cold Domestic Water Connection | 3/4" Male NPT |
| D | Hot Domestic Water Connection | 3/4" Male NPT |
| E | Heating Water Inlet | 1" Male NPT |
| F | Heating Water Outlet | 1" Male NPT |
| G | Gas Inlet | 3/4" Male NPT |
| H | Condensate Outlet | 3/4" Hose |
| I | Control Wiring | 7/16" Rubber Plug |
Water Heater Pressure Drop Diagram
This graph illustrates the water heater pressure drop for the L-Series models (RMCBH-L125i, RMCBH-L160i & RMCBH-L199i). The Y-axis represents Pressure Loss in PSI, and the X-axis represents Flow Rate in US Gallons per Minute (GPM). Two lines are shown: 'Combi 160-199' and 'Combi 99-125', indicating the pressure loss characteristics for different flow rates.
Boiler Head Loss Diagram
This graph displays the boiler head loss for the L-Series models (RMCBH-L125i, RMCBH-L160i & RMCBH-L199i). The Y-axis shows Head Loss in Feet through the boiler, and the X-axis shows Flow Rate in US Gallons per Minute (GPM). Two lines are presented: 'Combi 160/199' and 'Combi 99/125', detailing the head loss at various flow rates.
Dimensions Diagram
The combi boilers have the following approximate dimensions: Height: 32.5 inches (826mm), Width: 17.7 inches (450mm), Depth: 10.9 inches (278mm). The diagram shows front, side, and top views, highlighting key measurements and indicating connection points like the alternate 'B' connection.
Piping Connections Diagram
The bottom view of the RMCBH-L125i, RMCBH-L160i, and RMCBH-L199i models illustrates the layout of piping connections. These are labeled A through I, corresponding to Exhaust Outlet, Combustion Air Inlet, Cold Domestic Water Connection, Hot Domestic Water Connection, Heating Water Inlet, Heating Water Outlet, Gas Inlet, Condensate Outlet, and Control Wiring, respectively. Specific dimensions for spacing between connections are also indicated.
Parts & Accessories
- Floor Stand: P-267C
- Service Parts Kit: P-911R
- EZ Pipe Manifold: 251-063, 251-064
- 2" PVC Sidewall Vent Kit: P-741
- 3" PVC Sidewall Vent Kit: P-742
