Trane IntelliPak 1, Installation, Operation And Maintenance Manual, Page: 41 / 164

RT-SVX072A-EN 41
W WA AR RN NIIN NG G
H Ha azza arrd do ou uss G Ga asse ess a an nd d F Flla am mm ma ab blle e
V Va ap po orrss!!
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cco om mb bu ussttiio on n,, w wh hiicch h cco ou ulld d rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss
iin njju urry y.. T Th he e sstta atte e o off C Ca alliiffo orrn niia a h ha ass d de ette errm miin ne ed d tth ha att
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sse errv viicce e o orr u usse e o off tth hiiss p prro od du ucctt cco ou ulld d cca au usse e
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m mo on no ox xiid de e.. T To o a av vo oiid d h ha azza arrd do ou uss g ga asse ess a an nd d
fflla am mm ma ab blle e v va ap po orrss ffo ollllo ow w p prro op pe err iin nsstta alllla attiio on n a an nd d
sse ettu up p o off tth hiiss p prro od du ucctt a an nd d a allll w wa arrn niin ng gss a ass p prro ov viid de ed d
iin n tth hiiss m ma an nu ua all..
W WA AR RN NIIN NG G
E Ex xp pllo ossiio on n H Ha azza arrd d!!
F Fa aiillu urre e tto o p prro op pe errlly y rre eg gu ulla atte e p prre essssu urre e cco ou ulld d rre essu ulltt
iin n a a v viio olle en ntt e ex xp pllo ossiio on n,, w wh hiicch h cco ou ulld d rre essu ulltt iin n d de ea atth h,,
sse erriio ou uss iin njju urry y,, o orr e eq qu uiip pm me en ntt o orr p prro op pe errtty y--o on nlly y--
d da am ma ag ge e..
W Wh he en n u ussiin ng g d drry y n niittrro og ge en n ccy ylliin nd de errss ffo orr
p prre essssu urriizziin ng g u un niittss ffo orr lle ea akk tte essttiin ng g,, a allw wa ay yss p prro ov viid de e
a a p prre essssu urre e rre eg gu ulla atto orr o on n tth he e ccy ylliin nd de err tto o p prre ev ve en ntt
e ex xcce essssiiv ve elly y h hiig gh h u un niitt p prre essssu urre ess.. N Ne ev ve err p prre essssu urriizze e
u un niitt a ab bo ov ve e tth he e m ma ax xiim mu um m rre ecco om mm me en nd de ed d u un niitt tte esstt
p prre essssu urre e a ass ssp pe ecciiffiie ed d iin n a ap pp plliicca ab blle e u un niitt lliitte erra attu urre e..
Access holes are provided on the unit as illustrated in
to accommodate a side or bottom pipe entry on 20–75
ton units and in on 90–130 ton units.
Following the guidelines listed below will enhance both
the installation and operation of the furnace.
N No otte e:: 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 14, p. 42 as a guide to determine the
appropriate gas pipe size for the unit heating
capacity listed on the unit nameplate.
2. If a gas line already exists, verify that it is sized
large enough to handle the additional furnace
capacity before connecting to it.
3. Take all branch piping from any main gas line from
the top at 90 degrees or at 45 degrees to prevent
moisture from being drawn in with the gas.
4. 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.
5. Provide a drip leg near the unit.
6. Install a pressure regulator at the unit that is
adequate to maintain 7" w.c. for natural gas while
the furnace is operating at full capacity.
IIm mp po orrtta an ntt:: Gas pressure in excess of 14" w.c. or 0.5
psig will damage the gas train.
N NO OT TIIC CE E
G Ga ass V Va allv ve e D Da am ma ag ge e!!
F Fa aiillu urre e tto o ffo ollllo ow w iin nssttrru uccttiio on nss b be ello ow w cco ou ulld d rre essu ulltt iin n
g ga ass v va allv ve e d da am ma ag ge e ffrro om m iin ncco orrrre ecctt g ga ass p prre essssu urre ess,,
iirrrre eg gu ulla arr p pu ullssa attiin ng g fflla am me e p pa atttte errn nss,, b bu urrn ne err rru um mb blle e,,
a an nd d p po otte en nttiia all fflla am me e o ou utta ag ge ess..
U Usse e a a p prre essssu urre e rre eg gu ulla atto orr tto o p prro op pe errlly y rre eg gu ulla atte e g ga ass
p prre essssu urre e.. D DO O N NO OT T o ov ve errssiizze e tth he e rre eg gu ulla atto orr..
Failure to use a pressure regulating device will
result in incorrect gas pressure, which can cause
erratic operation due to gas pressure fluctuations as
well as damage the gas valve. Oversizing the
regulator will cause irregular pulsating flame
patterns, burner rumble, potential flame outages,
and possible gas valve damage.
If a single pressure regulator serves more than one
rooftop unit, it must be sized to ensure that the inlet
gas pressure does not fall below 7" w.c. with all the
furnaces operating at full capacity. The gas
pressure must not exceed 14" w.c. when the
furnaces are off.
7. Provide adequate support for all field installed gas
piping to avoid stressing the gas train and controls.
W WA AR RN NIIN NG G
E Ex xp pllo ossiio on n H Ha azza arrd d!!
F Fa aiillu urre e tto o ffo ollllo ow w ssa affe e lle ea akk tte esstt p prro occe ed du urre ess b be ello ow w
cco ou ulld d rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss iin njju urry y o orr
e eq qu uiip pm me en ntt o orr p prro op pe errtty y--o on nlly y--d da am ma ag ge e..
N Ne ev ve err u usse e a an n o op pe en n fflla am me e tto o d de ette ecctt g ga ass lle ea akkss.. U Usse e a a
lle ea akk tte esstt sso ollu uttiio on n ffo orr lle ea akk tte essttiin ng g..
8. Leak test the gas supply line using a soap-and-
water solution or equivalent before connecting it to
the gas train.
9. Check the supply pressure before connecting it to
the unit to prevent possible gas valve damage and
the unsafe operating conditions that will result.
N No otte e:: Do not rely on the 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 20, p. 44 through , for the appropriate gas train
IIn nsstta alllla attiio on n