NTI Trinity Tft399 Installation And Operation Manual page 29

Tft Series
7.0 INSTALLING GAS PIPING
Trinity Tft boilers are factory set to operate with Natural Gas; BEFORE OPERATING
WITH PROPANE, the boiler must be converted using the appropriate Natural to LP
Conversion Kit; see Table 7-1. Failure to properly convert the unit to safely operate with
Propane will cause dangerous burner operation, resulting in property damage, serious
injury or death.
Liquefied Petroleum (LP) propane gas is heavier than air. Do not install the boiler in a pit
or similar location that will permit heavier than air gas to collect. Check with Local
Codes as they may require boilers fueled with LP gas to be provided with an approved
means of removing unburned gases from the room. Failure to follow these instructions
may result in serious injury or death
Table 7-1 Natural to LP Propane Conversion Kit
Model Kit Number
Tft60-85
Tft110
Tft154
Tft201
Notes:
1
The Tft154 is converted to Propane using a replacement LP-Venturi Insert (p/n 85463), not an LP-Orifice. Follow
the Natural Gas to LP Conversion Instructions provided with kit number 85538-1.
2
The Tft201 is converted to Propane using a replacement LP-Venturi Insert (p/n 85797), not an LP-Orifice. Follow
the Natural Gas to LP Conversion Instructions provided with kit number 85801-1.
3
Tft399's with a serial number of 20915 and lower are converted to Propane using kit number 84471-1.
4 Tft399's with a serial number greater than 90974, and all Tft340's, are converted to Propane using kit
number 85469-1
Installation
Refer to the current National Fuel Gas Code ANSI Z223.1/NFPA 54 or CAN/CGA B149.1 installation codes,
and local codes for gas piping requirements and sizing. Pipe size running to the unit depends on:
 Length of pipe.
 Number of fittings.
 Type of gas.
 Maximum input requirement of all gas boilers in the residence.
LP-Orifice
82650-1 415 (4.15mm)
82650-1 52 (5.2mm)
85538-1 See Note 1
85801-1 See Note 2
Installation and Operation Instructions
Model
Tft285
Tft399
3
(pre s/n 20916)
Tft340-399
4
(post s/n 90974)
│
Trinity
Kit Number LP-Orifice
85802-1 5.2mm
84471-1 74 (7.4mm)
85469-1 6.75mm
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