Final Check Out; Normal Shutdown; Seasonal Startup/Shutdown; Seasonal Shutdown - Trane Perfomance Climate Changer CSAA Series Installation, Operation And Maintenance Manual

Final Check Out

1. Check the gas pressure at the burner manifold. It
should be the same pressure that is indicated on the
Manifold Pressure at Max. Input nameplate at full fire.
Refer to the burner nameplate for this value.
2. Adjust the gas pressure at the regulator by removing
the dust cap on the main gas valve/regulator and
turning the adjusting screw. Turn the adjusting screw
clockwise to increase the gas pressure; turn the
adjusting screw counter-clockwise to decrease the gas
pressure. If the pressure cannot be maintained at full
fire at the setting shown on the nameplate and the
regulator is adjusted fully open, contact your local gas
utility.
3. Using a gas analyzer, check the emissions in the
exhaust gas. Acceptable values are:
a. Carbon monoxide (CO)—400 ppm or less corrected
to 12 percent carbon dioxide.
b. Efficiency—75 percent or higher
c. Oxygen—8 to12 percent
d. Carbon dioxide - 8.2 to 9.4 percent
NOTICE
Over Firing Burners!
If fuel and air adjustment linkages were adjusted in the
start-up process, insure that the burner is not allowed
to over fire. The gas pressure on the manifold must not
exceed the gas pressure stated on the Powerflame
burner name plate. Over firing operation could result in
equipment and property damage.
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,
alteration, service or use of this product could cause
flammable mixtures or lead to excessive carbon
monoxide. To avoid hazardous gases and flammable
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.
The gas heat module/section goes through the following
routine every time it is started. The air handler fan must be
running, and the Power light on the flame-relay module
should be illuminated.
1. A contact closure command (the signal to start) comes
from a thermostat or building automation system.
2. The combustion air blower starts and runs for
approximately 90 seconds. This 90-second run is a pre-
purge cycle to clear the heat exchanger of combustible
gases before ignition.
CLCH-SVX08C-EN
3. 3:1 and 10:1 turndown, 200-2000 MBh: The pilot
light ignites, and the pilot light on the flame-relay
module should illuminate. (The pilot flame can be
viewed through the small sight glass on the burner.)
The pilot flame will burn for 10 seconds, then the flame
light on the flame-relay module should illuminate.
4. 3:1 and 10:1 turndown, 200-2000 MBh: The main
burner ignites, the modulating gas-valve actuator
starts to open, and the main light on the flame-relay
module should illuminate. Note that it could take as
long as 30 seconds for the actuator to fully open.
5. 20:1 turndown, 1250 thru 2400 MBh: The main
burner lights and the main burner light on the flame-
relay should illuminate. The modulating gas-valve
actuator starts to open, and the main light on the flame-
relay module should illuminate. Note that it could take
as long as 30 seconds for the actuator to fully open.
6. The gas-valve actuator slowly modulates open or
closed in response to the heat load required in the
building.
7. Complete the start-up checklist and send a copy as
directed to Trane to validate the warranty.

Normal Shutdown

When the system no longer requires heat, the temperature
control system opens the heat start contacts. The pilot
valve (3:1, 10:1 turndown burners), modulating gas valve
(20:1 turndown burners), automatic gas valve/regulator,
redundant automatic gas valve, and combustion blower
motor immediately de-energize, shutting down the
heating system.
The air-handling unit fan should run for a minimum of
three to ten minutes after heater shutdown to cool the heat
exchanger.

Seasonal Startup/Shutdown

Note: This procedure should be performed by a qualified
technician who is experienced in the servicing of
gas heating equipment.
The following recommended procedures for seasonal
shutdown and startup are important to maintaining your
equipment in proper working order.

Seasonal Shutdown

When heating system is to be shut down for extended
period of time:
1. Disconnect the main power to the heating module/
section.
2. Open the manual disconnect switch in the control
panel.
3. Close all manual valves in the gas line.
Start Up
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