Electric Heat Units; Final Unit Checkout; For Constant Volume Units; For Variable Air Volume Units - Trane Voyager Commercial Installation, Operation And Maintenance Manual

S S t t a a r r t t u u p p
bank is fired at full fire and the modulating bank again
adjusts to the heating load present.
Check both ignition systems (if applicable) when going
through the test procedures.
Once the ignition system and ignitors have been
checked, open the main power disconnect switch to
reset the RTRM.
W W A A R R N N I I N N G G
H H a a z z a a r r d d o o u u s s G G a a s s e e s s a a n n d d F F l l a a m m m m a a b b l l e e
V V a a p p o o r r s s ! !
F F a a i i l l u u r r e e t t o o o o b b s s e e r r v v e e t t h h e e f f o o l l l l o o w w i i n n g g i i n n s s t t r r u u c c t t i i o o n n s s c c o o u u l l d d
r r e e s s u u l l t t i i n n e e x x p p o o s s u u r r e e t t o o h h a a z z a a r r d d o o u u s s g g a a s s e e s s , , f f u u e e l l
s s u u b b s s t t a a n n c c e e s s , , o o r r s s u u b b s s t t a a n n c c e e s s f f r r o o m m i i n n c c o o m m p p l l e e t t e e
c c o o m m b b u u s s t t i i o o n n , , w w h h i i c c h h c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s
i i n n j j u u r r y y . . T T h h e e s s t t a a t t e e o o f f C C a a l l i i f f o o r r n n i i a a h h a a s s d d e e t t e e r r m m i i n n e e d d t t h h a a t t
t t h h e e s s e e s s u u b b s s t t a a n n c c e e s s m m a a y y c c a a u u s s e e c c a a n n c c e e r r , , b b i i r r t t h h d d e e f f e e c c t t s s , ,
o o r r o o t t h h e e r r r r e e p p r r o o d d u u c c t t i i v v e e h h a a r r m m . .
I I m m p p r r o o p p e e r r i i n n s s t t a a l l l l a a t t i i o o n n , , a a d d j j u u s s t t m m e e n n t t , , a a l l t t e e r r a a t t i i o o n n , ,
s s e e r r v v i i c c e e o o r r u u s s e e o o f f t t h h i i s s p p r r o o d d u u c c t t c c o o u u l l d d c c a a u u s s e e
f f l l a a m m m m a a b b l l e e m m i i x x t t u u r r e e s s o o r r l l e e a a d d t t o o e e x x c c e e s s s s i i v v e e c c a a r r b b o o n n
m m o o n n o o x x i i d d e e . . T T o o a a v v o o i i d d h h a a z z a a r r d d o o u u s s g g a a s s e e s s a a n n d d
f f l l a a m m m m a a b b l l e e v v a a p p o o r r s s f f o o l l l l o o w w p p r r o o p p e e r r i i n n s s t t a a l l l l a a t t i i o o n n a a n n d d
s s e e t t u u p p o o f f t t h h i i s s p p r r o o d d u u c c t t a a n n d d a a l l l l w w a a r r n n i i n n g g s s a a s s p p r r o o v v i i d d e e d d
i i n n t t h h i i s s m m a a n n u u a a l l . .
Turn the main gas supply to the unit "On" and check
the gas pressure at the unit's gas train. Refer to
"Installation Piping," p. 40
pressure and Figure 35, p. 41
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 for a
two stage burner must be set at negative 0.2" w.c., +/-
0.05" w.c. The manifold pressure on a modulating
burner should be set at a positive 0.5" w.c., +/-0.05" w.
c. For modulating burners, expect to see the manifold
pressure reading fluctuate while the burner is
operating, but it should never read negative.
W W A A R R N N I I N N G G
H H o o t t S S u u r r f f a a c c e e ! !
F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n s s b b e e l l o o w w c c o o u u l l d d r r e e s s u u l l t t i i n n
s s e e v v e e r r e e b b u u r r n n s s . .
S S u u r r f f a a c c e e t t e e m m p p e e r r a a t t u u r r e e s s m m a a y y e e x x c c e e e e d d 3 3 0 0 0 0 ° ° F F ( ( 1 1 5 5 0 0 ° ° C C ) ) . .
T T o o a a v v o o i i d d p p o o s s s s i i b b l l e e s s k k i i n n b b u u r r n n s s , , s s t t a a y y c c l l e e a a r r o o f f t t h h e e s s e e
s s u u r r f f a a c c e e s s . . I I f f p p o o s s s s i i b b l l e e , , a a l l l l o o w w s s u u r r f f a a c c e e s s t t o o c c o o o o l l b b e e f f o o r r e e
s s e e r r v v i i c c i i n n g g . . I I f f s s e e r r v v i i c c i i n n g g i i s s n n e e c c e e s s s s a a r r y y w w h h i i l l e e s s u u r r f f a a c c e e
t t e e m m p p e e r r a a t t u u r r e e s s a a r r e e s s t t i i l l l l e e l l e e v v a a t t e e d d , , y y o o u u M M U U S S T T p p u u t t o o n n
a a l l l l P P e e r r s s o o n n a a l l P P r r o o t t e e c c t t i i v v e e E E q q u u i i p p m m e e n n t t ( ( P P P P E E ) ) . .
Jump the test terminals momentarily to initiate second
stage heat operation. The combustion blower motor
should go to high speed. The second stage of heat in
units with modulating gas will initiate the second
106
for the proper gas supply
for the location of the gas
heater bank to fire and both banks will operate at high
fire. The manifold pressures of the two heater banks in
a high heat modulating unit will be different. The
pressure setting of the two stage burner will be a
negative 0.2" w.c., while the modulating burner will be
a positive 0.05" w.c.
N N o o t t e e : : When firing a modulating unit for the first time, a
"humming", or resonance sound may be heard.
This is an operational sound made by the burner
screen as it burns in. This sound is not a concern
unless it persists longer than the first few times
the unit is fired.

Electric Heat Units

Start the service test and check the amperage draw for
each heating stage. Refer to the heater electrical data in
Table 9, p. 29 (60 Hz) and
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 disconnect switch to shut the unit "Off" and
to reset the RTRM.
This concludes the setup and testing for the major
components and controls within the unit. Follow the
Test guide in , p. 68 - Table 46, p. 74
optional VFD, economizer actuator, and minimum
ventilation controls are functioning.

Final Unit Checkout

After completing all of the checkout and startup
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 Variable Air Volume Units

For Constant Volume Units

Verify that the "Mode" selection switch and the "Zone
Temperature" setpoints are set and/or programmed at
the sensor modules.
For Variable Air Volume Units
The RTAM has input setpoint potentiometers inside the
control 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
according to the job specifications, i.e.;
– Outside air reset temperature - _______ Setpoint
– Reset amount °F. - _______ Setpoint
– Static pressure - _______ Setpoint
Table 13, p. 31 (50 Hz) for the
to verify that the
RT-SVX34R-EN