Trane Voyager RT-SVX17C-EN, Installation Operation & Maintenance

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54
Heater Start Up
Gas Heat Units
Open the main disconnect switch to shut the unit off and to
reset the RTRM.
Follow the Test Guide in Figure 13 to start the unit in the
heating mode. Jumping the "Test" terminals several times for
two to three seconds will be required.
When starting the unit for the first time or servicing the heat-
ers, it is a good practice to start the heater with the main gas
supply turned "Off".
All of the heating units have two stage operation. On "High"
heat models, there are two heat exchangers with simulta-
neous operation when the first and second stages are acti-
vated. Check both ignition systems (if applicable) when go-
ing through the test procedures.
Once the ignition system and ignitors have been checked,
open the main power disconnect switch to reset the RTRM.
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.
When using dry nitrogen cylinders for pressurizing units
for leak testing, always provide a pressure regulator on
the cylinder to prevent excessively high unit pressures.
Never pressurize unit above the maximum recom-
mended unit test pressure as specified in applicable unit
literature. Failure to properly regulate pressure could re-
sult in a violent explosion, which could result in death or
serious injury or equipment or property-only-damage.
Turn the main gas supply to the unit "On" and check the gas
pressure at the unit's gas train. Refer to the "Field Installed
Gas Piping" section for the proper gas supply pressure and
Figure 7 for the location of the gas pressure taps.
Close the main power disconnect switch and start the first
stage heating Test again. Wait approximately 60 seconds for
the heater to switch to low fire and check the manifold gas
pressure. The manifold pressure must be set at a negative
0.2" w.c., ±0.05" w.c.
CAUTION
Hot Surfaces
!
Surface temperatures may exceed 300 ° F (150 ° C) on con-
densing unit and carbon tank. Contact of bare skin on
hot surfaces may result in minor to severe burns.
Jump the test terminals momentarily to initiate second stage
heat operation. The combustion blower motor should go to
high speed and the manifold gas pressure should remain at
a negative 0.2" w.c. ±0.05" w.c..
Electric Heat Units
Start the service test and check the amperage draw for each
heating stage. Refer to the heater electrical data in Table 6
for the full load amps of a specific heater size.
Once the operation of the heaters have been checked, open
the main power disconnect switch or the unit mounted dis-
connect switch to shut the unit "Off" and to reset the RTRM.
This concludes the setup and testing for the major compo-
nents and controls within the unit. Follow the Test guide in
Figure 13 to verify that the optional IGVs, VFD, economizer
actuator, minimum ventilation controls are functioning.
Final Unit Checkout
After completing all of the checkout and start-up procedures
outlined in the previous sections (i.e., operating the unit in
each of its modes through all available stages of cooling and
heating), perform these final checks before leaving the unit:
[ ] Verify that the RTRM is in the normal operation mode. The
LED located on the UCP module is "on" and glowing
continuously.
For Constant Volume Units;
[ ] Verify that the "Mode" selection switch and the "Zone Tem-
perature" setpoints are set and/or programed at the sen-
sor modules.
For Variable Air Volume Units;
The RTAM has input setpoint potentiometers inside the con-
trol panel that are set at the factory which will allow the unit
to operate and maintain system control. For specific job
specifications;
[ ] Verify that the control input potentiometers are set accord-
ing to the job specifications, i.e.;
Outside air reset temperature - _______ Setpoint
Reset amount
o
F. - _______ Setpoint
Static pressure - _______ Setpoint
Static pressure deadband - ________ Setpoint
Discharge air temperature - _______Setpoint
Morning warmup temperature - _______ Setpoint
Exhaust Fan - _______ Setpoint
[ ] Inspect the unit for misplaced tools, hardware and debris.
[ ] Verify that all unit exterior panels—including the control
panel doors—are secured in place.