Carrier 48TC 04 Series, Инструкции по обслуживанию и техническому обслуживанию

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Table 9 – Quantity of Heating Stages
MODELS SIZES 3---PH 1---PH
48TCD, S
04---06 1 1
07 1 NA
08---09 1 NA
12---16 2 NA
48TCE, R
04 2 1
05---06 1 1
07 2 NA
08---16 1 NA
48TCF,T
04 NA NA
05---06 2 1
07 2 NA
08---16 2 NA
48TCL, M 04---06 1 1
48TCN
04 NA NA
05---06 1 1
LIMIT SWITCH
AND SHIELD
C12061
Fig. 56 -- SRT Limit Switch Location
Fuel Types and Pressures
Natural Gas —
The 48TC unit is factory--equipped for
use with Natural Gas fuel at elevation under 2000 ft (610
m). See section Orifice Replacement for information in
modifying this unit for installation at elevations above
2000 ft (610 m).
Gas line pressure entering the unit’s main gas valve must
be within specified ranges. Adjust unit gas regulator valve
as required or consult local gas utility.
Table 10 – Natural Gas Supply Line Pressure Ranges
MODEL SIZES MIN MAX
48TC
04---14
4.0 in. wg
(996 Pa)
13.0 in. wg
(3240 Pa)
16
5.0 in. wg
(996 Pa)
13.0 in. wg
(3240 Pa)
Manifold pressure is factory--adjusted for NG fuel use.
Adjust as required to obtain best flame characteristic.
SIDE SHOT
LIMIT SWITCH
DOWN SHOT
LIMIT SWITCH
C12592
Fig. 57 -- Limit Switch Location
Table 11 – Natural Gas Manifold Pressure Ranges
UNIT SIZES
LOW
FIRE+
HIGH
FIRE
RANGE
48TCD
48TCS
04---07
08---09
NA
3.5 in. wg
(872 Pa)
2.0---5.0 in. wg (Hi)
(498---1245 Pa)
12---14
2.0
(498 Pa)
3.5
(872 Pa)
16
2.0
(498 Pa)
3.0
(747 Pa)
48TCE
48TCR
04---07
1.7 +
(423 Pa)
3.5
(872 Pa)
2.0---5.0 in. wg (Hi)
(498---1245 Pa)
08---09
2.0
(498 Pa)
3.5
(872 Pa)
12---14
2.0
(498 Pa)
3.5
(872 Pa)
16 2.0 3.0
48TCF
48TCS
05---07 1.7 3.5
2.0---5.0 in. wg (Hi)
(498---1245 Pa)
08---14 2.0 3.5
16 2.0 3.0
48TCL
48TCM
48TCN
All NA
3.5 in. wg
(872 Pa)
+: Size 04 only
NA : Not Available
Liquid Propane — Accessory packages are available for
field--installation that will convert the 48TC unit (except
low NOx model) to operate with Liquid Propane (LP)
fuels. These kits include new orifice spuds, new springs
for gas valves and a supply line low pressure switch. See
section on Orifice Replacement for details on orifice size
selections.
Low NOx models include specially--sized orifices and use
of different flue flow limits and tube baffles. Because of
these extra features, conversion of these models to LP is
not recommended.
Fuel line pressure entering unit gas valve must remain
within specified range.
48TC