Carrier WEATHERMASTER 50HJQ004-016 Product Data page 152

Guide specifications — 50HJQ004-012 (cont)
* 9. Electronic Programmable Thermostat:
Unit shall be capable of using deluxe full-fea-
tured electronic thermostat. Thermostat shall
use built-in compressor cycle delay control for
both heating and cooling duty. Thermostat shall
be capable of working with Carrier direct digital
controls.
*10. Thermostat and Subbase:
Thermostat shall provide staged cooling and
heating automatic (or manual) changeover, fan
control, and indicator light.
*11. Outdoor Coil Hail Guard Assembly:
Hail guard shall protect against damage from
hail and flying debris.
12. Unit-Mounted, Non-Fused Disconnect Switch:
Switch shall be factory-installed, internally
mounted. NEC and UL approved non-fused
switch shall provide unit power shutoff. Switch
shall be accessible from outside the unit and
shall provide power off lockout capability.
13. Convenience Outlet:
Switch shall be factory-installed and internally
mounted with easily accessible 115-v female
receptacle. Switch shall include 15 amp GFI
receptacle with independent fuse protection.
Voltage required to operate convenience outlet
shall be provided by a factory-installed step-
down transformer. Switch shall be accessible
from outside the unit.
14. Outdoor Coil Grille:
The grille protects the outdoor coil from dam-
age by large objects without increasing unit
clearances.
15. Compressor Cycle Delay:
Unit shall be prevented from restarting for min-
imum of 5 min. after shutdown.
16. Thru-the-Bottom Utility Connectors:
Kit shall provide connectors to permit electrical
connections to be brought to the unit through
the basepan.
17. Fan/Filter Status Switch:
Switch shall provide status of indoor (evapora-
tor) fan (ON/OFF) or filter (CLEAN/DIRTY).
Status shall be displayed over communication
bus when used with direct digital controls or
with an indicator light at the thermostat.
18. Energy$Recycler:
The package shall be an outdoor rooftop or sur-
face mounted, electronically controlled, air-to-
air heat pump unit utilizing a hermetic com-
pressor for cooling and heating duty.
The Energy$Recycler shall recover energy from
building exhaust air and pre-condition ventila-
tion air to allow higher ventilation requirements
and minimizing energy cost.
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This option shall be available with the following:
a. A mounting kit for the Energy$Recycler for
cantilever mounting off of the rooftop unit
with out the use of a slab or a roof curb.
b. A supplementary supply air fan kit to pro-
vide increased air movement into the 62AQ
unit.
c. A field-installed 460 v to 208/230 v trans-
former
Energy$Recycler is used with a 460 v roof-
top unit.
19. Power Exhaust Accessory for EconoMi$er IV or
EconoMi$er2:
Power exhaust shall be used in conjunction with
EconoMi$er IV or EconoMi$er2 to provide sys-
tem exhaust of up to 100% of return air (vertical
only). The power exhaust is a field-installed acces-
sory (separate vertical and horizontal design).
NOTE: Horizontal power exhaust is intended to
mount in return ductwork.
As the outdoor-air damper opens and closes,
both propeller fans are energized and de-
energized through the EconoMi$er IV control-
ler. The set point is factory set at 100% of out-
door-air, and is adjustable 0 to 100% to meet
specific job requirements. Available in 208/
230-1-60 v or 460-3-60 v. An LED light on the
controller indicates when the power exhaust is
operating.
For the EconoMi$er2, the power exhaust shall
be controlled by the PremierLink™ or third
party controls.
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20. Outdoor Air Enthalpy Sensor (EconoMi$er IV
or EconoMi$er2):
The outdoor air enthalpy sensor shall be used
with the EconoMi$er IV or EconoMi$er2
device to provide single enthalpy control. When
used in conjunction with a return air enthalpy
sensor, the controller will provide differential
enthalpy control. The sensor allows the con-
troller to determine if outside air is suitable for
free cooling.
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21. Return Air Enthalpy Sensor (EconoMi$er IV or
EconoMi$er2):
The return air enthalpy sensor shall be used
with the EconoMi$er IV or EconoMi$er2
device. When used in conjunction with an out-
door air enthalpy sensor, the EconoMi$er IV or
EconoMi$er2 device will provide differential
enthalpy control.
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22. Return Air Temperature Sensor (EconoMi$er
IV or EconoMi$er2):
The return air temperature sensor shall be used
with the EconoMi$er IV or EconoMi$er2
device. When used in conjunction with the stan-
dard outdoor air temperature sensor, the
EconoMi$er IV or EconoMi$er2 device will pro-
vide differential temperature control.
905
to provide power when the