Carrier 50HJ008, Инструкция по установке, запуску и обслуживанию

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3. The indoor coil access panel will be used as the top of the
hood. Remove the screws along the sides and bottom of
the indoor coil access panel. See Fig. 28.
4. Swing out indoor coil access panel and insert the hood
sides under the panel (hood top). Use the screws provided
to attach the hood sides to the hood top. Use screws pro-
vided to attach the hood sides to the unit. See Fig. 29.
5. Remove the shipping tape holding the economizer baro-
metric relief damper in place.
6. Insert the hood divider between the hood sides. See
Fig. 29 and 30. Secure hood divider with 2 screws on
each hood side. The hood divider is also used as the bot-
tom filter rack for the aluminum filter.
7. Open the filter clips which are located underneath the
hood top. Insert the aluminum filter into the bottom filter
rack (hood divider). Push the filter into position past the
open filter clips. Close the filter clips to lock the filter into
place. See Fig. 30.
8. Caulk the ends of the joint between the unit top panel and
the hood top. See Fig. 28.
9. Replace the filter access panel.
10. Install all EconoMi$er IV accessories. EconoMi$er IV
wiring is shown in Fig. 31. EconoMi$er2 wiring is shown
in Fig. 32.
Barometric flow capacity is shown in Fig. 33. Outdoor air
leakage is shown in Fig. 34. Return air pressure drop is shown
in Fig. 35.
ECONOMI$ER IV STANDARD SENSORS
Outdoor Air Temperature (OAT) Sensor — The outdoor air
temperature sensor (HH57AC074) is a 10 to 20 mA device
used to measure the outdoor-air temperature. The outdoor-air
temperature is used to determine when the EconoMi$er IV can
be used for free cooling. The sensor is factory-installed on the
EconoMi$er IV in the outdoor airstream. See Fig. 24. The op-
erating range of temperature measurement is 40 to 100 F.
Supply Air Temperature (SAT) Sensor — The supply air
temperature sensor is a 3 K thermistor located at the inlet of the
indoor fan. See Fig. 36. This sensor is factory installed. The op-
erating range of temperature measurement is 0° to 158 F. See
Table 6 for sensor temperature/resistance values.
The temperature sensor looks like an eyelet terminal with
wires running to it. The sensor is located in the “crimp end”
and is sealed from moisture.
Outdoor Air Lockout Sensor — The Economi$er IV is
equipped with an ambient temperature lockout switch located
in the outdoor air stream which is used to lockout the compres-
sors below a 42 F ambient temperature. See Fig. 24.
Table 6 — Supply Air Sensor Temperature/
Resistance Values
TEMPERATURE (F) RESISTANCE (ohms)
–58 200,250
–40 100,680
–22 53,010
–4 29,091
14 16,590
32 9,795
50 5,970
68 3,747
77 3,000
86 2,416
104 1,597
122 1,080
140 746
158 525
176 376
185 321
194 274
212 203
230 153
248 116
257 102
266 89
284 70
302 55
22 1/4”
DIVIDER
BAROMETRIC
RELIEF
CLEANABLE
ALUMINUM
FILTER
FILTER
HOOD
FILTER
CLIP
OUTSIDE
AIR
Fig. 30 — Filter Installation
SIDE
PANEL
INDOOR
COIL
ACCESS
PANEL
INDOOR
COIL
ACCESS
PANEL
CAULK
HERE
TOP
SIDE
PANEL
Fig. 28 — Indoor Coil Access Panel Relocation
B
TOP
PANEL
INDOOR COIL
ACCESS PANEL
24 9/16”
SCREW
HOOD DIVIDER
LEFT
HOOD
SIDE
40 3/8”
Fig. 29 — Outdoor-Air Hood Construction