Carrier 38AQS008 Product Data page 43

F. Field-Installed Accessories:
1. Hot Water Coil:
Coil shall be 2-row, U-bend coil with copper
tubes and aluminum plate fins bonded to the
tubes by mechanical expansion. Coil shall be
mounted in a galvanized steel housing that shall
be fastened to the unit's fan deck for blow-thru
heating operation. Coil shall have maximum
working pressure of 150 psig.
2. Steam Distributing Coil:
Coil shall consist of one row of copper tubes
with aluminum plate fins, and shall have inner
steam distributing tubes. Coil shall be mounted
in a galvanized steel housing and shall be fas-
tened to the unit's fan deck for blow-thru heat-
ing operation. Coil shall have maximum
working pressure of 175 psig at 400 F.
3. Electric Heaters:
Heaters for nominal 240, 480, or 575-volt,
3-phase, 60 Hz power supply shall be factory-
supplied for field installation as shown on the
equipment drawings. Electric heat assembly
shall be ETL and ETL, Canada, agency
approved, and shall have single-point power
wiring. Heater assembly shall include contactors
with 24-v coils, power wiring,
wiring terminal blocks, and a hinged access
panel.
4. Air Discharge Plenum:
Plenum shall be factory supplied to provide
free-blow air distribution for vertical floor-
mounted units. A grille with moveable vanes for
horizontal or vertical airflow adjustment shall be
included. Plenum housing shall be field-installed
on the unit's fan deck for blow-thru air distribu-
tion.
5. Return Air Grille:
Grille shall be factory supplied for field installa-
tion on the unit's return air opening.
6. Unit Subbase:
Subbase assembly shall be factory supplied for
field installation. Subbase shall elevate floor-
mounted vertical units to provide access for cor-
rect condensate drain connection.
24-v control
10. CO
11. Condensate Drain Trap:
7. Economizer:
Economizer for ventilation or "free" cooling
shall be factory provided for field installation.
For free cooling applications, economizer shall
be compatible with factory-supplied thermostat;
economizer dampers shall open when outdoor
air enthalpy is suitable for free cooling. Econo-
mizer shall be compatible with factory-supplied
CO sensor; economizer dampers shall open
2
when indoor CO level rises above predeter-
2
mined set point. Economizer shall include
enthalpy control and damper actuator.
8. Thermostat Controls:
a. Programmable multi-stage thermostat with
7-day clock, holiday scheduling, large backlit
display, remote sensor capability, and Title
24 compliance.
b. TEMP System programmable communicat-
ing multi-stage thermostat with fan switch,
timeclock, LCD display, °F/°C capability,
and CCN (Carrier Comfort Network) com-
patibility.
c. Commercial Electronic Thermostat with
7-day timeclock, auto-changeover, multi-
stage capability, and large LCD temperature
display.
d. Non-programmable thermostat with fan
switch subbase.
9. Overhead Suspension Package:
Package shall include necessary brackets
support units in a horizontal ceiling
tion.
Sensor:
2
Sensor shall provide the ability to signal the
economizer to open when the space CO
exceeds the predetermined set point. Sensor
shall have the capability of being connected to
Comfort System relay pack or to economizer
using field-supplied and installed Honeywell dc
adapter no. Q769C1004.
Trap shall have transparent, serviceable design
for easy cleaning. Kit shall also include overflow
shutoff switch and wiring harness for connec-
tion to alarm if desired.
to
installa-
level
2
43