EasyManuals Logo

Johnson Controls YORK YPC Series User Manual

Johnson Controls YORK YPC Series
114 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #45 background imageLoading...
Page #45 background image
JOHNSON CONTROLS
45
FORM 155.17-N1
ISSUE DATE: 4/1/2013
13
SECTION 13 – GAS PIPING DESIGN
Prior to designing/installing gas piping
systems, all national, local, and other
ap pli ca ble codes, re stric tions and reg-
u la tions should be re viewed to en sure
total com pli ance.
Gas piping should be sized to provide required pres-
sure at the burner train inlet manual shut-off cock,
when op er at ing at the maximum desired fuel input.
All gas piping should be appropriately pressure test-
ed to ensure leak-free operation. It is mandatory that
a drip leg be installed in the gas supply system just
ahead of the burner gas train inlet manual shut-off
cock. See Figure 21 on page 45 below.
When testing with pressures higher than the maximum
pressure ratings of the gas train components, be sure
to isolate these components and test their piping for
gas leaks with correct pressures only. On some burn-
ers, the max i mum main gas train and/or pilot gas train
com po nents pressure is 1/2 PSIG. (14" W.C.).
Refer to the tables in Appendix A - Tables at the back
of this doc u ment for information relating to the sizing
of gas supply piping. These tables are based on the
general flow char ac ter is tics of commercially produced
black wrought iron pipe. If in doubt regarding the flow
capabilities of a cho sen line size, the next largest size
is recommended.
FIGURE 21 - TYPICAL SCHEMATIC GAS PIPING
LD05310
Gas Inlet
Drip Leg
Test Cock Test Cock
Main Gas
Pessure
Regulator
Main Gas
Shut-O
Cock
Field Piped
Approved
Leak Test
Cock
To Gas
Manifold
Modulating
Buttery
Valve
High Gas
Pressure
Switch
Field Piped
Low Gas
Pressure
Switch
Vent As Required
By Code
Pilot
Shut-O
Cock
Vent As Required
By Code
Auxiliary
Gas Valve
Main Gas
Valve
N. O. Vent
Valve
Vent As Required
By Code
Pilot Gas Pressure
Regulator
1/8" Pressure Tap
Pilot Solenoid Valve (2 may be Required by Code)
Pressure Tap
CAUTION: All eld mount components
must be mounted in the proper location
and in the proper direction of gas ow.

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Johnson Controls YORK YPC Series and is the answer not in the manual?

Johnson Controls YORK YPC Series Specifications

General IconGeneral
BrandJohnson Controls
ModelYORK YPC Series
CategoryChiller
LanguageEnglish

Related product manuals