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d. Self diagnostics with fault and power code LED indicator. Field accessory Display Kit available for further
diagnostics and special setup applications.
e. RS485 capability standard.
f. Electronic thermal overload protection.
g. 5% swinging chokes for harmonic reduction and improved power factor.
h. All printed circuit boards shall be conformal coated.
3. Integrated EconoMi$er IV, EconoMi$er2, and EconoMi$er X
standard leak rate models
. (Factory installed on 3
phase models only. Field installed on all 3 and 1 phase models)
a. Integrated, gear driven opposing modulating blade design type capable of simultaneous economizer and
compressor operation.
b. Independent modules for vertical or horizontal return configuration shall be available. Vertical return mod-
ules shall be available as a factory installed option.
c. Damper blades shall be galvanized steel with composite gears. Plastic or composite blades on intake or re-
turn shall not be acceptable.
d. Shall include all hardware and controls to provide free cooling with outdoor air when temperature and/or
humidity are below setpoints.
e. Shall be equipped with gear driven dampers for both the outdoor ventilation air and the return air for posi-
tive air stream control.
f. Standard leak rate shall be equipped with dampers not to exceed 2% leakage at 1 in. wg pressure differen-
tial.
g.
Economizer controller on EconoMi$er IV models shall be Honeywell W7212 that provides:
(1.) Combined minimum and DCV maximum damper position potentiometers with compressor staging re-
lay.
(2.) Functions with solid state analog enthalpy or dry bulb changeover control sensing.
(3.) Contain LED indicates for:
when free cooling is available, when module is in DCV mode, when exhaust fan contact is closed.
h. Economizer controller on EconoMi$er X models shall be the Honeywell W7220 that provides:
(1.) 2--line LCD interface screen for setup, configuration and troubleshooting.
(2.) On--board Fault Detection and Diagnostics (FDD) that senses and alerts when the economizer is not
operating properly, per California Title 24.
(3.) Sensor failure loss of communication identification
(4.) Automatic sensor detection
(5.) Capabilities for use with multiple--speed indoor fan systems
(6.) Utilize digital sensors: Dry bulb and Enthalpy
i. Economizer controller on EconoMi$er 2 models with PremierLink shall be 4--20mA design and controlled
by the PremierLink controller. PremierLink does not comply with California Title 24 Fault Detection& Di-
agnostic (FDD) requirements.
j. Economizer controller on EconoMi$er 2 models with RTU Open models shall be a 4--20mA design con-
trolled directly by the RTU Open controller. RTU Open meets California Title 24 Fault Detection & Diag-
nostic (FDD) requirements.
k. Shall be capable of introducing up to 100% outdoor air.
l. Shall be equipped with a barometric relief damper capable of relieving up to 100% return air and contain
seals that meet ASHRAE 90.1 requirements.
m. Shall be designed to close damper(s) during loss--of--power situations with spring return built into motor.
n. Dry bulb outdoor air temperature sensor shall be provided as standard. Enthalpy sensor is also available on
factory installed only. Outdoor air sensor setpoint shall be adjustable and shall range from 40 to 100F /4 to
38C. Additional sensor options shall be available as accessories.
o. The economizer controller shall also provide control of an accessory power exhaust unit function. Factory
set at 100%, with a range of 0% to 100%.
p. The economizer shall maintain minimum airflow into the building during occupied period and provide de-
sign ventilation rate for full occupancy.
q. Dampers shall be completely closed when the unit is in the unoccupied mode.
r. Economizer controller shall accept a 2--10 Vdc CO2 sensor input for IAQ/DCV control. In this mode,
dampers shall modulate the outdoor air damper to provide ventilation based on the sensor input.
s. Compressor lockout temperature on W7220 is adjustable from --45F to 80F, set at a factory default of 32F.
Others shall open at 35F (2C) and closes at 50F (10C).
Summary of Contents for WeatherMaker 48TC**04
Page 22: ...22 CURBS WEIGHTS DIMENSIONS cont C10298A Fig 5 Dimensions 48TC 08 12 ...
Page 25: ...25 CURBS WEIGHTS DIMENSIONS cont A14149 Fig 9 Dimensions 48TC 14 ...
Page 27: ...27 CURBS WEIGHTS DIMENSIONS cont C14151 Fig 12 Dimensions 48TC 16 ...
Page 29: ...29 CURBS WEIGHTS DIMENSIONS cont C10772B Fig 15 Roof Curb Details 48TC 16 ...