The Cayman Series (CWI) residential/light commercial, cast iron, hot water boiler is a fully-packaged, installer-ready product. The integral draft diverter provides a low profile design allowing the boiler to be installed in areas requiring a low clearance. This atmospheric, gas-fired boiler is for use with a conventional chimney.

The Cayman Series is packaged with the option of either natural or LP gas as well as an electronic ignition system. The Cayman Series also includes an optional tankless coil for domestic hot water (see specifications) and a larger range of available sizes.

Type: Residential / Light Commercial
Heat Exchanger: Cast Iron
Fuel: Gas Fired (Natural or LP)
Input: 69 – 379 MBH*
Efficiency (AFUE) 81% – 83.5%**
Venting: Chimney
Ignition: Electronic Ignition
Trim: Water
Domestic Water: Optional Tankless Coil
Burner: N/A
Configuration: Packaged
Notes: Designed for installation on combustible floors.

 

MODEL NUMBER NO. OF SECTIONS INPUT
(MBH)		 D.O.E HEATING CAPACITY
(MBH)		 IBR NET RATING
(MBH)		 AFUE
%		 TANKLESS HEATER
(GAL/MIN)		 WATER CONTENT
(GALS.)		 APPROX. SHIPPING WEIGHT
(LBS)
CWI103 4 103 86 75 83.1 2.50 10.0 432
CWI138 5 138 115 100 83.1 3.00 12.2 523
CWI172 6 172 144 125 83.2 3.50 14.4 589
CWI207 7 207 173 150 83.2 3.75/4.50*** 16.6 669
CWI241 8 241 201 175 83.2 3.75/4.75*** 18.8 757
CWI276 9 276 230 200 83.2 4.00/5.25*** 21.0 839
CWI311 10 310 252 219 81.4** 4.00/5.25*** 23.2 977
CWI346 11 345 281 244 81.4** 4.00/5.25*** 25.4 1044
CWI380 12 379 309 269 81.4** 4.00/5.25*** 27.6 1125