Lennox CBX40UHV Series Unit Information

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CBX40UHV
X−DIAGRAMS AND SEQUENCE OF OPERATION
A−CBX40UHV − 208/230V SINGLE PHASE − SEQUENCE OF OPERATION
1. Line voltage is routed to transformer T1 and blower
motor B3.
2. T1 supplies 24VAC to terminal strip TB2, which
supplies 24VAC to the indoor thermostat and electric heat,
if used.
HEATING
3. W1 of the thermostat provides a W1 demand to the
AHC. The AHC outputs a 22VDC signal to the K32 relay
contained in the ECB40 heat section. (See electric heat
diagrams for operation).
4. AHC energizes blower motor B3 on heating speed.
COOLING
5. See Table 19 for cooling sequence of operation.

Lennox CBX40UHV Series Specifications

General

Brand	Lennox
Model	CBX40UHV Series
Category	Air Handlers
Language	English