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DELTA
zone 1
zone 1
zone 2
zone 2
zone 3
zone 3
fuse
fan control
thermal switch
zone dampers
jumper
zone valves
(8”NC)
noir
draft damper
motor
internal
blower
thermal
switch
terminal
block
draft
damper
thermostat
internal blower
speed control
black
white
black
bare
110V
relay
yellow
white
black
external blower
control
external
central heat
blower
24V
18ga
LVT
white
Figure 38: Wiring for all systems with zone heat system
zone thermostats
(heat only)
transformer
