Replacement Instructions
84318
│ Gas Valve GB-ND 057
Revision Date: 2016/02/16
S:\NTI2001_N_Drive (1-20-09)\R&D\PARTS - ENGINEERING\Parts Department Stickers and Instructions\Current Parts Instructions (doc)\84318 Gas
Valve Replacement Instructions Lx 500.docx
NY Thermal Inc.
Tel: (506) 657-6000
Toll Free: 1-800-688-2575
Fax: 1-506-432-1135
Web: www.nythermal.com
Email: [email protected]
84318
Gas Valve GB-ND 057-DO
Replacement Instructions:
Shut off the gas and power to the boiler.
Remove display and display housing as an assembly (Fig. 1-2 and 1-3). Remove the boiler jacket top
(front and rear) and right side. Loosen the left side panel.
Remove the gas valve harness and the vinyl hose from the gas valve.
Remove the screws securing the gas line adapter to the gas valve inside boiler (Refer to Fig. 1-5).
Remove the screws securing the gas valve to the bracket on the left side of boiler (Refer to Fig. 1-4) and
remove gas valve.
Lift the gas valve up from between the gas valve adaptor and the bracket.
Reinstall the new valve in the reverse order it was removed and perform a combustion test. Refer to Gas
Valve and Burner Setup section in the boiler installation and operation manual included with the boiler.
Fig. 1-2 Display and display housing assembly.
Fig. 1-3 Display housing
Applicable Boiler Models:
Lx 500
Kit Contains:
Valve GB-ND 057
Tools Required:
Pipe Wrench (for gas line)
Adjustable Wrench (for gas line union)
1/4” and 5/16” Nut Driver
Phillips #2 and #1 Screwdriver
Torx T20 Screwdriver
Torx T25 Screwdriver
Needle Nose Pliers (for gas valve vent adapter)
Combustion Analyzer
Fig. 1-1 Gas Valve GB-ND 057
