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NTI 84713 Installation Instructions

Gas valve ebm 120vdc
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Installation Instructions
NTI Boilers Inc.
Tel: (506) 657-6000
Toll Free: 1-800-688-2575
Fax: 1-506-432-1135
Web: www.ntiboilers.com
Email: info@ntiboilers.com

Applicable Appliance Models

 Tx51, Tx81, Tx101, Tx151, Tx151C
 VM110, VM110P, VM153, VM153P
 TV110, FTV110C, FTV150, FTV150C, FTV190, FTV190C

Kit Contents

 84713 – Gas Valve

Tools Required

 Pipe Wrench (for gas line)
 Adjustable Wrench (for gas line union)
 1/4" and 5/16" Nut Drivers
 3 mm Allen wrench
 2 mm Allen wrench
 Flat Screwdriver
 Torx T25 Screwdriver
 Combustion Analyzer
The installation of this gas valve must be performed by a qualified gas technician in accordance
with these instructions. Installing this valve without the proper background and training is
hazardous and may result in property damage serious injury or death.

Replacement Instructions

1) Shut off the power and gas supply to the boiler.
2) Remove the gas line from the gas valve.
3) Remove the gas valve harness and feedback tube from the gas valve.
4) Remove the screws securing the gas valve to the Venturi and remove the gas valve from the boiler.
5) Transfer gas line inlet adapter to the new valve. Use care to ensure that the O-ring gasket does not fall out.
6) Transfer gas valve outlet gasket to the replacement gas valve (see Figure 3). Propane (LP): if equipped with an LP
orifice, ensure it remains inside the groove in the middle of the gas valve outlet gasket.
Figure 2
Gas valve outlet gasket
(location for LP orifice – if
applicable)
S:\NTI2001_N_Drive (1-20-09)\R&D\PARTS - ENGINEERING\Parts Department Stickers and Instructions\Current Parts Instructions (doc)\Parts
instructions word docs\84713 instructions - Gas Valve EBM 120VDC R1.doc
84713
Gas Valve EBM 120VDC
84713 │ Gas Valve EBM 120VDC
Figure 1 Gas Valve
Revision Date: 2019-06-19

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Summary of Contents for NTI 84713

  • Page 1 Figure 2 Gas valve outlet gasket (location for LP orifice – if applicable) S:\NTI2001_N_Drive (1-20-09)\R&D\PARTS - ENGINEERING\Parts Department Stickers and Instructions\Current Parts Instructions (doc)\Parts instructions word docs\84713 instructions - Gas Valve EBM 120VDC R1.doc...
  • Page 2 84713 │ Gas Valve EBM 120VDC Installation Instructions 7) For Tx models, drill 1/8” hole in the bottom of the air-inlet pipe assembly in accordance with the Trinity Tx Air-inlet Pipe – Drain Hole Addition instructions (see last page). 8) Reinstall the new valve in the reverse order it was removed Feedback Tube –...
  • Page 3 84713 │ Gas Valve EBM 120VDC Installation Instructions Throttle Screw Adjustment The gas valve Throttle Screw (see Figure 4) is used to calibrate the CO concentration with the burner operating at or near the maximum modulation rate (see Table 3). Turning the Throttle Screw in (clockwise) decreases the CO concentration.
  • Page 4 84713 │ Gas Valve EBM 120VDC Installation Instructions Failure to close the bleed screw of the Line Pressure Test Port will cause a severe leakage of gas, resulting in a fire or explosion causing property damage, serious injury or death.
  • Page 5 84713 │ Gas Valve EBM 120VDC Installation Instructions Trinity Tx Air-inlet Pipe – Drain Hole Addition (factory equipped post s/n 116575) Instructions: Working with the boiler turned off, drill a 1/8” diameter hole in bottom of air-inlet pipe as close to the clamp as possible.

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