TX Series Installation, Operation, and Maintenance Manual
Diversified Heat Transfer, Inc.
439 Main Road, Route 202
Towaco, New Jersey 07082
Page
19
of
33
Phone: 800-221-1522
Website: www.dhtnet.com
Priority Operation:
When zone 6 is switched to the priority setting and is actuated, all other zones will
stop operation until zone 6 is satisfied. When zone 6 is not switched to priority, all zones will operate
independently.
Jumper Placement:
REMOVE the jumper between terminals ZC and ZR. Connect terminal ZC to ZC
terminal on the aquastat control. Connect terminal ZR to ZR terminal on the aquastat control. Confirm
polarity is consistent between boiler aquastat and switching relay.
Power Input:
Connect 120 volt as power input to terminals N and H. Neutral wire to terminal N. Hot
wire to terminal H.
NOTE:
Aquastat
: The water heater aquastat has operating set point range from 100°F to 240°F. The differential
is variable from 5°F to 30°F. It is set at 120°F set point with 5°F differential.
COLD START BOILER APPLICATION
