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│Installation and Operation Manual
Trinity Lx-WH
4.0 GENERAL VENTING
The Trinity Lx is certified as a "Category IV" water heater requiring a "Special Venting System" designed for
pressurized venting. The Exhaust Vent must be piped to the outdoors, using the vent materials and rules outlined
in this section. Under no conditions may this unit vent gases into a masonry chimney, unless it is vacant, and
utilizes the approved venting material and rules described in this section.
Vent and Air-inlet are to be piped separately. The Trinity Lx cannot share a common vent
or air-inlet with multiple appliances. Failure to comply will result in serious injury or
death.
Removing an Existing Water heater from Common Venting System
Do not install the Trinity Lx into a common venting system with any other appliances.
Failure to comply with this warning will cause flue gas spillage and leech carbon
monoxide emissions into the surrounding air resulting in serious injury or death.
When an existing water heater is removed from a common venting system, the common
venting system is likely to be too large for proper venting of the remaining appliances
connected to it. Instructions have been provided on how to remove the existing water
heater and how to resize the remaining venting system. Failure to follow these
instructions may result in property damage, serious injury or death.
At the time of removal of an existing water heater, the following steps shall be followed with each appliance
remaining connected to the common venting system placed in operation, while the other appliances remaining
connected to the common venting system are not in operation.
Steps to Removing an Existing Water Heater
1. Seal any unused openings in the common venting system.
2. Visually inspect the venting system for proper size and horizontal pitch. Verify that there is no blockage,
restriction, leakage, corrosion or other deficiencies which could cause an unsafe condition.
3. Insofar as is practical, close fireplace dampers, all building doors and windows and all doors between the
space in which the appliances remaining connected to the common venting system are located and other
spaces of the building. Turn on clothes dryers and any appliance not connected to the common venting
system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at
maximum speed. Do not operate a summer exhaust fan.
4. Place in operation the water heater being inspected. Follow the lighting instructions. Adjust thermostat so
water heater will operate continuously.
5. Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a
match or candle, or smoke from a cigarette, cigar or pipe.
6. After it has been determined that each appliance remaining connected to the common venting system
properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and
any other gas burning appliance to their previous condition of use.
7. Any improper operation of the common venting system should be corrected so the installation conforms with
the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CSA B149.1, Natural Gas and Propane
Installation Code. When resizing any portion of the common venting system, the common venting system
should be resized to approach the minimum size as determined using the appropriate tables in Part 11 of the
National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CSA B149.1, Natural Gas and Propane
Installation Code.
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Lx – WH Series
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