Carrier 39L handleiding
Handleiding
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Fig. 42 — Fan Belt Tension
Fig. 43 — Fan Section Label
Water and Steam Coil Piping Recommendations
GENERAL
Use straps around the coil casing or the lifting holes (see Fig. 44)
to lift and place the coil.
Piping practices are outlined in the Carrier System Design
Manual, Part 3, Piping Design. See Tables
14-16 for circuiting
data.
WATER COILS
Typically, coils are piped by connecting the supply at the bot-
tom and the return at the top. See Fig. 44. This is not always
the case, especially if the coil hand has been changed in the
field. Coils must be piped for counterflow; otherwise, a capaci
-
ty reduction of 5% for each coil row will result. To ensure
counterflow, chilled water coils are piped so that the coldest
water meets the coldest air. Hot water coils are piped so that
the warmest water meets the warmest air.
STEAM COILS
Position the steam supply connection at the top of the coil, and
the return (condensate) connection at the bottom. The coil tubes
must incline downwards toward the return header connection for
condensate drainage. See Fig.
45-49 and Table 17.
Figure 45 illustrates the normal piping components and the
suggested locations for high, medium, or low-pressure steam
coils. The low-pressure application (zero to 15 psig) can dis
-
pense with the 1/4-in. petcock for continuous venting located
above the vacuum breaker (check valve).
Fig. 44 — Coil Connections and Lifting Points
Note the horizontal location of the 15-degree check valve, and the
orientation of the gate/pivot. This valve is intended to relieve any
vacuum forming in the condensate outlet of a condensing steam
coil, and to seal this port when steam pressure is again supplied to
the coil. It must not be installed in any other position, and should
not be used in the supply line.
For coils used in tempering service, or to preheat outside air, in-
stall an immersion thermostat in the condensate line ahead of the
trap. This will shut down the supply fan and close the outdoor
damper whenever the condensate falls to a predetermined point,
perhaps 120°F.
CAUTION
To prevent damage to the coil or coil headers: Do not use the
headers to lift the coil. Support the piping and coil connections
independently. Do not use the coil connections to support
piping. When tightening coil connections, use a backup
wrench on the nozzles.
50
100
1
50
SPAN
INCHES
1
5
20
2
5
30
50 100 150
SPAN
INCHES
05
10
15 20 25 30
50 100 150
SPANINCHES
0 5 1015 2025 30
DEFLECTION
FORCE
(LB.)
SMALL
“O” RING
SPAN SCALE
STRAIGHT
EDGE
LARGE “O” RING
V-BELT
ADJACENT
V-BELT
BELT
SPAN
NOTICE
TENSION BELTS TO SPECIFICATION
SHOWN ON DRIVE LABEL. OVER
TENSIONING BELTS WILL SEVERELY
REDUCE BELT AND BEARING LIFE.
REPLACEMENT PARTS
BEARINGS
DRIVE ________________________
FREE ________________________
SHAFT _________________________
WHEEL _________________________
INLET CONE ____________________
TO ORDER REPLACEMENT PARTS,
CONTACT: RCD
(REPLACEMENT COMPONENTS DIVISION)
1-800-443-4410
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Productinformatie
| Merk | Carrier |
| Model | 39L |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 14640 MB |
