Bryant 581A/B manual 142

GUIDE SPECIFICATIONS — 580F036-151 AND 581B036-150 (cont)

580F036-150 AND 581B036-150

t. Remote Minimum Position Control — A field- installed accessory remote potentiometer allows the outdoor air damper to be opened or closed beyond the minimum position in the occupied mode for modified ventilation.

3. Manual Outdoor-Air Damper:

Manual damper package shall consist of damper, birdscreen, and rainhood which can be preset to admit up to 50% outdoor air for year round ventilation.

*4. 100% Two-Position Damper:

a.Two-position damper package shall include single blade damper and motor. Admits up to 100% out- door air.

b.Damper shall close upon indoor (evaporator) fan shutoff.

c.Designed to close damper during loss of power situations.

d.Equipped with 15% barometric relief damper.

*5. 25% Two-Position Damper:

a.Two-position damper package shall include single blade damper and motor. Admits up to 25% out- door air.

b.Damper shall close upon indoor (evaporator) fan shutoff.

*6. Head Pressure Control Package:

Consists of solid-state control and condenser-coil temperature sensor to maintain condensing temper- ature between 90 F and 110 F at outdoor ambient temperatures down to –20 F by condenser-fan speed modulation or condenser-fan cycling and wind baffles.

7. LP (Liquid Propane) Conversion Kit:

Package shall contain all the necessary hardware and instructions to convert a standard natural gas unit for use with liquefied propane (valid up to 2000 ft elevation).

*8. Electronic Programmable Thermostat:

Units shall be capable of using deluxe full-featured electronic thermostat. Thermostat shall use built-in compressor cycle delay control for both heating and cooling duty. Thermostat shall be capable of working with third party direct digital controls.

9. Light Commercial Thermidistat™ Device:

Field-installed wall-mounted thermostat is used to control temperature and activation of the dehumidifi- cation package. The Thermidistat device can be set for humidity settings from 50% to 90% relative humidity. Automatic humidity control adjusts indoor humidity based on the outdoor temperature sensor.

*10. Flue Shield:

Flue shield shall provide protection from the hot sides of the gas flue hood.

*11. Thermostat and Subbase:

Thermostat and subbase shall provide staged cool- ing and heating automatic (or manual) changeover, fan control, and indicator light.

*12. Condenser Coil Hail Guard Assembly:

Hail guard shall protect against damage from hail and flying debris.

13. 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 accessi- ble from outside the unit and shall provide power off lockout capability.

14. Convenience Outlet:

Outlet shall be factory-installed and internally mounted with easily accessible 115-v female recep- tacle. Shall include 15 amp GFI receptacle with inde- pendent fuse protection. Voltage required to operate convenience outlet shall be provided by a factory-installed step-down transformer. Shall be accessible from outside the unit.

15.High-Static Indoor Fan Motor(s) and Drive(s)

(036-120):

High-static motor(s) and drive(s) shall be factory- installed to provide additional performance range.

16. Flue Discharge Deflector:

Flue discharge deflector directs unit exhaust verti- cally instead of horizontally.

17. Condenser Coil Grille:

The grille protects the condenser coil from damage by large objects without increasing unit clearances.

18. Compressor Cycle Delay:

Unit shall be prevented from restarting for minimum of 5 minutes after shutdown.

19. Thru-the-Bottom Utility Connectors:

Kit shall provide connectors to permit gas and elec- trical connections to be brought to the unit through the basepan.

20. Fan/Filter Status Switch:

Switch shall provide status of indoor (evaporator) 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.

21.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 system exhaust of up to 100% of return air (vertical only). The power exhaust is a field-installed accessory (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 deenergized through the EconoMi$er IV controller. The set point is factory set at 100% of outdoor-air, and is adjust- able 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 third party controls.

22.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 EconoMi$er IV or EconoMi$er2 device will provide differential enthalpy control. The sensor allows the EconoMi$er IV or EconoMi$er2 controller to determine if outside air is suitable for free cooling.

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