Gas Furnace Startup; Staged, Modulating, And Ultra; Modulating; Two Stage Gas Furnace - Trane IntelliPak 1 Installation, Operation And Maintenance Manual

U U n n i i t t S S t t a a r r t t u u p p
7. Press the Auto key to start the test. Remember that
the delay designated in step 6 must elapse before
the fan will begin to operate.
8. Once the system has started, verify that the electric
heat or the hydronic heat system is operating
properly by using appropriate service technics; i.e.
amperage readings, delta tees, etc.
9. Press the STOP key and clear all Manual Overrides
in the unit control panel to stop the system
operation.

Gas Furnace Startup

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 . .
W W A A R R N N I I N N G G
E E x x p p l l o o s s i i o o n n H H a a z z a a r r d d ! !
F F a a i i l l u u r r e e t t o o p p r r o o p p e e r r l l y y r r e e g g u u l l a a t t e e p p r r e e s s s s u u r r e e 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 a a v v i i o o l l e e n n t t e e x x p p l l o o s s 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 , ,
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 , , o o r r e e q q u u i i p p m m e e n n t t o o r r p p r r o o p p e e r r t t y y - - o o n n l l y y - -
d d a a m m a a g g e e . .
W W h h e e n n u u s s i i n n g g d d r r y y n n i i t t r r o o g g e e n n c c y y l l i i n n d d e e r r s s f f o o r r
p p r r e e s s s s u u r r i i z z i i n n g g u u n n i i t t s s f f o o r r l l e e a a k k t t e e s s t t i i n n g g , , a a l l w w a a y y s s p p r r o o v v i i d d e e
a a p p r r e e s s s s u u r r e e r r e e g g u u l l a a t t o o r r o o n n t t h h e e c c y y l l i i n n d d e e r r t t o o p p r r e e v v e e n n t t
e e x x c c e e s s s s i i v v e e l l y y h h i i g g h h u u n n i i t t p p r r e e s s s s u u r r e e s s . . N N e e v v e e r r p p r r e e s s s s u u r r i i z z e e
u u n n i i t t a a b b o o v v e e t t h h e e m m a a x x i i m m u u m m r r e e c c o o m m m m e e n n d d e e d d u u n n i i t t t t e e s s t t
p p r r e e s s s s u u r r e e a a s s s s p p e e c c i i f f i i e e d d i i n n a a p p p p l l i i c c a a b b l l e e u u n n i i t t l l i i t t e e r r a a t t u u r r e e . .
122
W W A A R R N N I I N N G G
R R o o t t a a t t i i n n g g C C o o m m p p o o n n e e n n t t s s ! !
F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r 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 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 r r o o t t a a t t i i n n g g c c o o m m p p o o n n e e n n t t s s c c u u t t t t i i n n g g a a n n d d s s l l a a s s h h i i n n g g
t t e e c c h h n n i i c c i i a a 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 . .
D D u u r r i i n n g g i i n n s s t t a a l l l l a a t t i i o o n n , , t t e e s s t t i i n n g g , , s s e e r r v v i i c c i i n n g g a a n n d d
t t r r o o u u b b l l e e s s h h o o o o t t i i n n g g 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 i i t t m m a a y y b b e e
n n e e c c e e s s s s a a r r y y t t o o w w o o r r k k w w i i t t h h l l i i v v e e a a n n d d e e x x p p o o s s e e d d r r o o t t a a t t i i n n g g
c c o o m m p p o o n n e e n n t t s s . . H H a a v v e e a a q q u u a a l l i i f f i i e e d d o o r r l l i i c c e e n n s s e e d d s s e e r r v v i i c c e e
i i n n d d i i v v i i d d u u a a l l w w h h o o h h a a s s b b e e e e n n p p r r o o p p e e r r l l y y t t r r a a i i n n e e d d i i n n
h h a a n n d d l l i i n n g g e e x x p p o o s s e e d d r r o o t t a a t t i i n n g g c c o o m m p p o o n n e e n n t t s s , , p p e e r r f f o o r r m m
t t h h e e s s e e t t a a s s k k s s . .

Staged, Modulating, and Ultra

Modulating

It is important to establish and maintain the
appropriate air/fuel mixture to assure that the gas
furnace operates safely and efficiently.
Since the proper manifold gas pressure for a particular
installation will vary due to the specific BTU content of
the local gas supply, adjust the burner based on carbon
dioxide and oxygen levels rather than manifold
pressure alone.
The volume of air supplied by the combustion blower
determines the amount of oxygen available for
combustion, while the manifold gas pressure
establishes fuel input. By measuring the percentage of
carbon dioxide produced as a by-product of
combustion, the operator can estimate the amount of
oxygen used and modify the air volume or the gas
pressure to obtain the proper air/fuel ratio.
Confirming the correct air/fuel mixture for a furnace
results in rated burner output, limited production of
carbon monoxide, and a steady flame that minimizes
nuisance shutdowns.
N N o o t t e e : : Prior to startup, ensure the gas supply line
installation is adequate to maintain 7" w.c. for
natural gas while the furnace is operating at full
capacity.

Two Stage Gas Furnace

2-stage gas heaters are available for the 235, 350, 500,
850, and 1000 MBh heater sizes.
Modulating Gas Furnace
Modulating gas heaters are available for the 500, 850,
and 1000 MBh heater sizes.
Unit Control
The unit is controlled by at supply air temperature
sensor located in the supply air stream for Discharge
Temperature Control units. Zone Temperature Control
units have two sensors, one located in the supply air
stream and the zone sensor. The temperature sensor
signal is sent to the Symbio controller of the IntelliPak
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