Alpine Installation, Operating, and Service Instructions

103448-10 - 6/18 73
VII. Gas Piping (continued)
1. Protect boiler gas control valve. For all
testing over ½ psig (3.5kPa), boiler and its
individual shutoff valve must be disconnected
from gas supply piping. For testing at ½ psig
(3.5kPa) or less, isolate boiler from gas supply
piping by closing boiler’s individual manual
shutoff valve.
2. Locate leaks using approved combustible
gas non-corrosive leak detector solution.
Explosion Hazard. Do not
use matches, candles, open flames or other
ignition source to check for leaks.
DANGER
If gas pressure in the
building is above ½ psig (3.4 kPa), an additional
gas pressure regulator is required. Using
one additional regulator for multiple boilers
may result in unsafe boiler operation. The
additional regulator must be able to properly
regulate gas pressure at the input of the
smallest boiler. If the regulator cannot do this,
two or more additional regulators are required.
Consult regulator manufacturer and/or local
gas supplier for instructions and equipment
ratings.
CAUTION
D. Gas Piping for Multiple Boiler Installation
1. Individual module (boiler) gas pipe sizing
specific details - see Paragraph A.
2. Individual module (boiler) recommended gas
piping detail - see Figure 26.
3. An additional gas pressure regulator(s) may
need to be installed to properly regulate inlet
gas pressure at the smallest individual module
(boiler).