Honeywell Digital ambient thermostat non-programmable RF

Honeywell EC7800 SERIES ST7800B Plug-In Purge Thner Application The ST7800B Plug-in Purge Tuner provides the prepurge timing for the EC7800 SERIES Relay Module. ST7800B Order Specification Number Prepurge Timing ST7800B1004 2 sec. ST7800B1012 7 sec. ST7800B1020 10 sec. ST7800B1038 20 sec. ST7800B1046 30 sec. ST7800B1053 40 sec. ST7800B1061 60 sec. ST7800B1079 90 sec. 5. Reinstall the Keyboard Display Module, Oust Cover, ST7800B1087 2.5 min. DATA CONTROLBUS MODULETM or Remote Reset ST7800B1095 5 min. Module onto the EC7800 Series Relay Module and restore ST7800B1103 lOmin. power to the device. Run the bumer system through at least ST7800B1111 15 min. one complete cycle to be sure that the system is operating as ST7800Bl 129 22 min. desired. ST7800B1137 30 min. Fig. 1-Purge card installation. Installation fficAUTION Disconnect power supply before installing Purge Timer to prevent electrical shock or equipment damage. More than one power supply disconnect may be involved. 1. Remove the Keyboard Display Module, Oust Cover, DATA CONTROLBUS MODULE™ or Remote Reset Module. 2. Remove the current ST7800B (if installed) from the EC7800 SERIES Relay Module by pulling upward on the plastic support cover, see Fig. 1. 3. Make sure that the new ST7800B selected bas the desired liming period. 4. Properly orient the plug-in purge timer with the opening in the Relay Module, and insert the Purge Card into the opening of the Relay Module compartment, see Fig. l . A. G. • 9-93 • ©Honeywell Inc. 1993 • Form Number 65-0167