Figure 6 - Fuel Gas Piping System - York EX Series Installation, Operation & Maintenance Instructions Manual

SECTION 3 – HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
LOW PRESSURE TYPE (Full Automatic)
Standard
Flow
Meter
City Gas
M
INTERMEDIATE PRESSURE TYPE (Full Automatic)
Standard
Flow
Meter
City Gas
M
HIGH PRESSURE TYPE (Full Automatic)
Option
Flow
Meter
City Gas
M

FIGURE 6 - FUEL GAS PIPING SYSTEM

28
Gas Pres-
sure
Low-Limit
Switch
Pressure
PI PA
Gauge
Main Safety
GL
Shut-Off Valve
M
Strainer
Electric
Operated
Ball Valve
Shut-Off Valve
(Option)
Cock
Main Safety
Shut-Off Valve
M
Strainer Electric
Operated
Ball Valve
Shut-Off Valve
(Option)
Cock
Blower
Main Safety
Shut-Off Valve
M
Gas Pressure
Strainer Electric
Control Valve
Operated
Ball Valve
(Option)
Shut-Off Valve
Cock
Air Pressure Switch
PA
Blower
M
AL
BLW
Electric Operated
Butterfly Valve
M
Cock
Electric
Operated
Butterfly
Pilot Safety
Valve
Cock
Gas Pressure
Governor
Air Pressure Switch
PA
Blower
M
AL
BLW
Electric Operated
Butterfly Valve
Pressure
Gauge
GH
PI PA
GL
M
Cock
Cock
Electric
Operated
Pilot Safety
Butterfly
Valve
Cock
Gas Pressure
Governor
Air Pressure Switch
PA
M
High Limit Switch
AL
BLW
Elec. Op.
Butterfly
Pressure
Valve
Gauge
GH
PI PA
GL
Cock
M
Cock
Electric
Operated
Butterfly
Pilot Safety
Valve
Cock
Gas Pressure
Governor
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
A
Main Burner
G
Pilot Burner
G
Gas Pressure
High-Limit Switch
A
Main Burner
G
Pilot Burner
G
Gas Pressure
A
Main Burner
G
Pilot Burner
G
LD20180a
JOHNSON CONTROLS