Power Exhaust Operation and Settings
Units without a ReliaTel™ Options Module (RTOM)
The power exhaust is turned on whenever the indoor blower is running and the economizer damper is at 25% outside air or greater. This is not adjustable.
ReliaTel™ Units with an RTOM and without Ventilation Override Accessory
The power exhaust set point (the point at which the power exhaust is turned on) is adjustable from 0% to 100%
economizer damper outside air setting, corresponding to the setting of the “exhaust setpoint” potentiometer on the RTOM (see Figure 10). The power exhaust is turned on when the indoor blower is running and the damper position is greater than the power exhaust set point.
ReliaTel™ Units with an RTOM and with an Optional Ventilation Override Accessory
Same as above except the ventilation override exhaust function causes the power exhaust to run with the damper closed and the indoor blower off.
Steps:
1. Close the unit disconnect, then place the zone sensor fan selector in the Fan “ON” position, and the Heat/Cool
the selector in the “OFF” position. This places the damper in the minimum ventilation position.
2. On ReliaTel™ units, to verify power exhaust operation, put the unit in test mode and step through to the economizer step. Adjust the power exhaust initiate point as desired.
Note: ReliaTel ™units without RTOM option, power exhaust will not come on until the economizer damper reaches approximately 25% open. ReliaTel™ units with RTOM option, power exhaust will operate based on the exhaust
setpoint on the RTOM module.
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.