10
5.0 INSTALLING GAS PIPING
5.1 Installation
Refer to the current
National Fuel Gas Code ANSI
Z223.1/NFPA 54 or CAN/CGA B149.1
installation codes, and
local codes for gas piping requirements and sizing. Pipe size
running to the unit depends on:
•
Length of pipe.
•
Number of fittings.
•
Type of gas.
•
Maximum input requirement of all gas appliances in the
residence.
Insure that:
•
Flexible gas pipe is used (if acceptable by local codes).
The gas valve and blower cannot support the weight of
piping, leading to blower vibration and damaged
components. If rigid piping is used, ensure that the valve
supports NO WEIGHT
•
You plan the installation so that the piping does not
interfere with the vent pipe, or the removal of the valve,
burner, and serviceable components.
•
The Boiler shall be installed such that the gas ignition
system components are protected from water (dripping,
spraying, rain etc.) during installation and servicing.
•
The gas piping is large enough for all the appliances in
the home. No appreciable drop in line or manifold
pressure should occur when any unit (or combination of units) lights or runs.
•
Always use a pipe-threading compound that is resistant to propane (LP) gas solvent action. Use sparingly to all male threads,
starting at two threads from the end. Over doping or applying dope to the female end, can result in a blocked gas line.
•
DO NOT TIGHTEN FITTINGS WITHOUT SUPPORTING THE GAS VALVE as damage to the valve or motor can occur.
•
Install a manual “equipment Shut-Off Valve” as shown. Valve must be listed by a nationally recognized testing lab.
5.2 Testing and settings
When running, the line pressure supplying
the unit must be
4-9 inches w.c. for Natural
gas
installations and
9-12” for Propane
installations. Ensure that the regulator is
capable of maintaining this pressure under all
operational conditions.
Line pressure should be maintained at 4-9”w.c for Natural Gas and 9-12”w.c for propane while running at maximum rate. Trinity gas
valves are equipped with two bleed ports; one is for the Manifold pressure, and the other is for the Line pressure.
The gas valve is equipped with a throttle/input adjustment screw. The input screw “
MUST NEVER BE ADJUSTED
” without verifying
proper combustion with a calibrated combustion analyzer.
Warning
If line pressure exceeds ½ PSI (14 inches w.c.)
completely disconnect line to gas valve. This
excessive pressure can damage valve,
causing a leak resulting in fire or explosion.
It is highly recommended to use flexible
gas pipe, the gas valve and blower
cannot support the weight of piping. If
piping is used, ensure that the valve
supports
NO WEIGHT
Gas cock shut
Off Valve to be
"T" type handle
Gas valve
Ti100-200
Ti400
Summary of Contents for Trinity Ti 100
Page 35: ...35 12 0 WIRING SCHEMATIC...
