Trane Voyager RT-SVX17C-EN, Установка, эксплуатация и обслуживание

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Field Installed Gas Piping
Note: Gas pressure in excess of 14" w.c. or 0.5 psig
will damage the gas train.
Failure to use a pressure regulating device will result in in-
correct gas pressures. This can cause erratic operation due
to gas pressure fluctuations as well as damage to the gas
valve.
Oversizing the regulator will cause irregular pulsating flame
patterns, burner rumble, potential flame outages, as well as
possible gas valve damage.
6. Leak test the gas supply line using a soap-and-water solu-
tion or equivalent before connecting it to the gas train.
WARNING
Hazard of Explosion!
Never use an open flame to detect gas leaks. Explosive
conditions may occur. Use a leak test solution or other
approved methods for leak testing. Failure to follow rec-
ommended safe leak test procedures could result in
death or serious injury or equipment or property-only-
damage.
7. Pressure test the supply line before connecting it to the
unit to prevent possible gas valve damage and the unsafe
operating conditions that will result.
Note: Do not rely on gas train shutoff valves to
isolate the unit while conducting gas pressure/leak
test. These valves are not designed to withstand
pressures in excess of 14" w.c. or 0.5 psig.
Connecting the Gas Supply Line to the
Furnace Gas Train
Follow the steps below to complete the installation between
the supply gas line and the furnace. Refer to Figure 7 for the
Gas Train configuration.
1. Connect the supply gas piping using a "ground-joint" type
union to the furnace gas train and check for leaks.
2. Provide adequate support for the field installed gas piping
to avoid stressing the gas train and controls.
3. Adjust the inlet supply gas pressure to the recommended
6" for natural gas or 11" w.c. for LP gas.
General Requirements
All internal gas piping for YC* rooftop units are factory in-
stalled and leak tested. Once the unit is set into place, a gas
supply line must be field installed and connected to the gas
train located inside the gas heat compartment.
WARNING
Hazardous Gases and Flammable Vapors!
Exposure to hazardous gases from fuel substances
have been shown to cause cancer, birth defects or other
reproductive harm. Improper installation, adjustment, al-
teration, service or use of this product could cause flam-
mable mixtures. To avoid hazardous gases and flam-
mable vapors follow proper installation and set up of
this product and all warnings as provided in this
manual. Failure to follow all instructions could result in
death or serious injury.
REFER TO THE INSTALLATION, OPERATION AND MAIN-
TENANCE MANUAL PROVIDED WITH THIS UNIT FOR
PROPER OPERATION INSTRUCTIONS.
Access holes are provided on the unit as shown in Figure 2
to accommodate side panel entry. Following the guidelines
listed below will enhance both the installation and operation
of the furnace.
Note: In the absence of local codes, the installation
must conform with the American National Standard
Z223.1a of the National Fuel Gas Code, (latest
edition).
1. To assure sufficient gas pressure at the unit, use Table 5
to determine the appropriate gas pipe size for the heating
capacity listed on the unit's nameplate.
If a gas line already exists, verify that it is sized large
enough (Table 5) to handle the additional furnace capac-
ity.
2. Take all branch piping from any main gas line from the top
at 90 degrees or side at 45 degrees to prevent moisture
from being drawn in with the gas.
3. Ensure that all piping connections are adequately coated
with joint sealant and properly tightened. Use a piping
compound that is resistant to liquid petroleum gases.
4. Provide a drip leg near the unit.
5. Install a pressure regulator at the unit that is adequate to
maintain 6" w.c. for natural gas and 11" w.c. for LP gas
while the unit is operating in the "High Heat" mode. A
minimum inlet gas pressure of 2.5" w.c. for natural gas
and 8" w.c. for LP gas is required while operating in the
"High Heat" mode.