Lennox 19V30 Installation And Setup Guide

11
Lennox Ventilation Control System (LVCS)
• Set LVCS cycle time to one hour.
• Set ventilation time to 60 minutes.
ACC1
ACC2
Lennox Communicating
Indoor Unit
NOTE: Pass the blower motor L1 wire through the current loop on the current sensing relay as illustrated.
When there is a heating, cooling or continous fan call, the ventilation
controller will open the outdoor air damper to ventilate if the
outdoor temperature and indoor humidity are within the limits of the
ventilation controller.
NOTE: Set the communicating thermostat fan mode operation to Circulate and adjust duration to match control ventilation time duration.
26L56
CURRENT SENSING
RELAY
120VAC COIL RELAY
24VAC LVCS
DAMPER TRANSFORMER
VENTILATION
DAMPER
OUTDOOR
TEMPERATURE
SENSOR
NEUTRAL
EAC/ACC 120VAC
Smart Hub
-
COMMBUS
A B
+
HD
Display
Subbase
B
A
+
-
Figure 10. iComfort S30, Lennox Ventilation Control System (LVCS), Current Sensing Relay, 120VAC Coil Relay, Damper Transformer, Ventilation
Dampers and Communicating Indoor Unit (using Non-Communicating Terminals)

Lennox 19V30 Specifications

General

Brand	Lennox
Model	19V30
Category	Thermostat
Language	English