I Series Brochure
I-SERIES
Make a great impression with the I-Series Condensing Gas Boiler — delivering iconic
indoor heating solutions. Using the perfect combination of proven technology and
reliability, these boilers are designed with the homeowner in mind. Unlike most combi
boilers, the I-SERIES contains a proportional valve which allows for simultaneous
delivery of domestic hot water and central heating without interruption of the heating flow.
Simultaneous Delivery of Domestic Hot
Water and Central Heating
THE ADVANTAGES
COMFORT & CONVENIENCE
• Simultaneous delivery of hot water/
home heating without interruption
• Servo based by-pass control for
precise DHW temperature control
• Built-in recirculation logic for
dedicated return and crossover modes
• Multiple heating zones
New Product Lineup
HEAT ONLY COMBI
MODELS i060SN i090SN i120SN i150SN i060CN i090CN i120CN
PRODUCT DIMENSIONS
18.5 IN. X 26.4 IN. X 10.9 IN.
(471 MM X 671 MM X 276 MM)
18.5 IN. X 26.4 IN. X 10.9 IN.
(471 MM X 671 MM X 276 MM)
UNIT WEIGHT 59.2 LB (27 KG) 62 LB (28 KG) 73.0 LB (33 KG) 76.1 LB (34.5 KG)
MIN GAS INPUT -
HEATING (BTU/H)
15,000 15,000
MAX. INPUT - HEATING
(BTU/H)
60,000 90,000 120,000 150,000 60,000 90,000 120,000
MAX. INPUT - DOMESTIC
HOT WATER (BTU/H)
N/A 160,000 199,000
MAX. INPUT - DHW
@ 70° F
∆
T
N/A 4.1 GPM (15 L/MIN) 5.1 GPM (19 L/MIN)
TURN DOWN RATIO 4: 1 6: 1 8: 1 10:1 4:1 6:1 8:1
AFUE RATING 95.1% 95.9% 95.5% 96.0% 95.1% 95.9% 95.5%
CIRCULATING PUMP THREE SPEED (GRUNDFOS® UPS 15-78)
APPROVED VENTING PVC, CPVC, POLYPROPYLENE, STAINLESS STEEL
INCLUDED IN THE BOX:
LP FIELD CONVERSION KIT, OUTDOOR RESET SENSOR, FLUE ADAPTERS (TWIN PIPE, CONCENTRIC),
PRESSURE RELIEF VALVE (PRV FOR CENTRAL HEATING), MOUNTING BRACKET
OPTIONAL
ACCESSORIES
PRIMARY-SECONDARY HEATING KITS, CONDENSATE NEUTRALIZER, SCALECUTTER AND CARTRIDGE,
ISOLATION VALVE KIT (FOR QUICK ISOLATION OF COMBI BOILER DHW CONNECTIONS), MC-601 CONTROLLER
FLEXIBLE INSTALLATION
• Compact design
• Versatile venting options
• Easy parameter settings
• NG with LP conversion
OPERATIONAL
PERFORMANCE
• 95% AFUE Eciency
• High volume of hot
water production
• Outdoor Reset
optimizes home heating
performance