DC 20-125
DC 33-160
Dual Fired Combi - Unique 2 in 1 heat exchanger eliminates the need for a Diverter valve and plate type heat exchanger.
Features
Technical Data
Connections
Touch Panel
Documentation
Features
| · Up to 96% AFUE with full ASME-rated vessel. |
| · Two independent copper coils embedded in a cast aluminium heat exchanger. |
| · Built-in boiler pump. |
| · PVC/CPVC/PPs approved. |
| · Low lead certified. |
| · Self-cleaning, self-draining vertical fin heat exchanger. |
· Built-in supply and return sensors control the heat exchanger temperature (versus water temperature), thus eliminating failures. |
| · Contractor friendly, fewer internal parts, easy to install, maintain and service. |
| · Outdoor reset technology increases efficiency by lowering the water temp automatically. |
| · Exceptional value and longevity. Over 2 million installed. |
| · Includes Air Vent, Outdoor Sensor & Relief Valve. |
| · 5 Year manufacturer’s parts warranty. |
| · 10 year limited heat exchanger warranty. |
Technical Data
| SPECIFICATION | DC 20-125 | DC 33-160 |
| CSA Input (Natural Gas or Propane) – MBH | 20 – 125 | 33 – 160 |
| CSA Input (Natural Gas or Propane) – KW | 5.6 – 36.6 | 9.7 – 46.9 |
| CSA Output – MBH | 18.6 – 110.8 | 30.4 – 140.0 |
| CSA Output – KW | 5.4 – 32.5 | 8.9 – 41.0 |
| DHW – CSA Input (Natural Gas or Propane) – MBH | 20 – 125 | 33 – 124 |
| DHW – CSA Input (Natural Gas or Propane) – KW | 95.6 – 36.3 | 9.7 – 36.3 |
| A.F.U.E | 95% | 94% |
| Min gas pressure (Nat. Gas or Propane) – inch w.c. | 5 | 5 |
| Max gas pressure (Nat. Gas or Propane) – inch w.c. | 14 | 14 |
| Power (120Vac/60Hz) – Watts @ full fire with internal pump | 130 | 164 |
| Weight (empty) – lbs/Kg | 105 / 48 | 105 / 48 |
| Pressure vessel water content – USG/Liters | 0.5/1.9 | 0.5/1.9 |
| Max boiler flow rate – USgpm | 11 | 11 |
| Min boiler flow rate – USgpm | 3 | 3 |
| Max operating pressure – Space Heating Coil – psig | 43.5 | 43.5 |
| Max operating pressure – Domestic Hot Water Coil – psig | 150 | 150 |
| Approved installation altitude – ASL | 10,000 ft | 10,000 ft |
| Ambient temperature – Low (°F/°C) | 32/0 | 32/0 |
| Ambient temperature – High (°F/°C) | 122/50 | 122/50 |
| Max relative humidity (non-condensing) | 90% | 90% |
| Min water temperature – Space Heating (°F/°C) | 50/10 | 50/10 |
| Max water temperature – Space Heating (°F/°C) | 194/90 | 194/90 |
| Min water temperature – Domestic Hot Water (°F/°C) | 104/40 | 104/40 |
| Max water temperature – Domestic Hot Water (°F/°C) | 149/65 | 149/65 |
| Min flow rate to activate DHW heating – USgpm | 0.5 | 0.5 |
| Max flow rate DHW heating – USgpm | 4 | 4 |
| Max equivalent vent length 2″ (each side) | 35′ | 35′ |
| Max equivalent vent length 3″ (each side) | 120′ | 120′ |
| Domestic Hot Water delivery: @70°F/ 39°C temperature rise | 3.2 GPM | 3.2 GPM |
| EXHAUST PIPE SIZE | MAXIMUM EQUIVALENT VENT LENGTH |
| Schedule 40; CPVC or PPs | (each side) |
| 2” | 35’ |
| 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 |
| PPs | |
| PPs 87-90’Elbow | Allow 8’ equivalent feet |
| Flexible PPs | |
| 3” Flexible | 35 Actual feet |
Connections
| A | Exhaust Outlet | 3″ Schedule 40 |
| B | Combustion Air | 3″ Schedule 40 |
| C | Cold Domestic Water Connection | 3/4″ Male NPT |
| D | Hot Domestic Water Connection | 3/4″ Male NPT |
| E | Heating Water Inlet (Return) | 1″ Male NPT |
| F | Heating Water Outlet (Supply) | 1″ Male NPT |
| G | Gas Inlet | 1/2″ Male NPT |
| H | Condensate Outlet | 3/4″ Hose |
| I | Knock-out (3) | 1/2″ |
| HEIGHT |
| DC 20-125 31.3″ [796] |
| DC 33-160 31.3″ [796 |
Touch Panel
| CONTROLLER AN INDICATOR BUTTONS | |||
| 1 | Power Indicator | A | Power – ON / OFF |
| 2 | Space Heating | B | Space Heating / DHW Toggle |
| 3 | Domestic Hot Water | C | Minus |
| 4 | Main Display | D | Plus |
| 5 | Fahrenheit and PSI | E | Fahrenheit/Celsius |
| 6 | Celsius and Bar | F | Domestic Hot Water Comfort / Eco |
| 7 | Comfort / ECO / OFF – Indicator | G | Service |
| 8 | Comfort / ECO / OFF – Indicator | H | Reset Button |
| 9 | Service Display | ||
| 10 | Flashes to indicate a fault | ||
Documentation
Download List of Manuals
| ↓ DC Series Installation & Operating Instructions Manual |
| ↓ DC Series User Manual |
| ↓ DC Series Controller Manual |
Download List of Literature
| ↓ DC Series Sales Brochure |
| ↓ DC Series Submittal Sheet |
