Bosch Water Heater - 7-738-100-256 The Greenstar comes in a floor standing or wall mounted option that will provide reliable and efficient heating for a townhouse, condo, apartment, single or multi family home. Available as a heat only boiler for use with a hot water tank, or as a combi model for heating integrated with tankless domestic hot water (DHW)
At Bosch we design and manufacture all of our key components in-house, our assembly process is tightly controlled, our standards are driven by the Automotive sector as Bosch is the world's largest supplier to automobile manufacturers; all processes are documented, monitored traceable. Before your new boiler leaves the factory it is live fire tested and tuned for optimal efficiency. Bosch Greenstar Condensing Boilers feature industry-leading design and reliable internal components built to deliver optimal heating comfort year after year all while being energy efficient!
Additional Information
PART NUMBER7738100256
Model No.ZWB35-3
BOSCH GREENSTARGREENSTAR
COMBI 131
FUELNG / LP
INPUT MAXIMUM (MBH)131.9
INPUT MINIMUM (MBH)36.0
DOE HEATING CAPACITY (MBH)118
NET I=B=R (MBH)103
AFUE95%
DHW FLOW MAX ( 72 °F), GPM3.2
WATER VOLUME, GAL (L)0.952 (3.5)
Wall Model Weight, lbs (without packaging, kg)110.2 (50)
Wall Model Dimensions, in. (W x H x D)172/5 x 33 ½ x 139/10
Optional Base DimensionsStand dimensions: 13 ¾" deep, by 17 ³/8 " wide by 205„ 8 " high. Total height of stand and boiler: 541/8
Wall Boiler Supply Return
Tappings, in.1
Floor Boiler Supply Return
Tappings, in.1 ¼
Domestic Cold Water Supply, in. ¾
Domestic Hot Water Supply, in. ¾
Gas Connection Size, in. ¾
Vent Size, in.2 - 3
Vent MaterialPVC / CPVC / PP / PP-Flex
Combustion Air Size, in.2 - 3
High Altitude CapabilityNo De-Rating
up to 6,000'
Permissible Inlet Gas Pressure (NG in. W.C.)
3.5-10.5"
Permissible Inlet Gas Pressure (LP (propane) in. W.C.)8-13"
