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Table of ContentsI. Product Description............................................................. 1
II. Specifications....................................................................... 1
III. Before Installing................................................................... 2
IV. Locating the Boiler............................................................... 3
V. Air for Combustion & Ventilation........................................ 5
VI. Venting.................................................................................. 9
VII. System Piping Connections ...............................................11
I Product Description The TWZ series boiler is a cast iron oil-fired water boiler designed for use in closed forced circulation heating systems.
This boiler must be vented by natural draft into a lined masonry or metal chimney, or Type L vent. An adequate supply of air
for combustion, ventilation and dilution of flue gases must be available in the boiler room. An optional tankless heater is
available to generate domestic hot water.
II SpecificationsVIII. Tankless Heater Piping ................................15
IX. Fuel Line Piping........................................... 16
X. Wiring ..........................................................19
XI. Start-up and Checkout.................................. 21
XII. Service & Maintenance................................ 24
XIII. Parts .............................................................27
FIGURE 1: GENERAL CONFIGURATION *
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*Notes: 1. Tankless Coil Opening Not Present On Less-Coil Boilers.
2. Circulator Supplied Loose - May Be Installed On Supply Or Return.
SUPPLY PIPE
LOCATION