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CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
40 of 71
10.2 Central and Satellite Heaters (Zoning Capability)
The heater can be configured so that several heaters
within the same heating zone will modulate
simultaneously with connection to a single heat
demand control device. The heat demand control
device (See Page 44, Section 10.4) will be wired
directly to a single heater configured as the central
heater. The remaining heaters in the zone will be
configured as satellite heaters and will modulate
based on control signaling from the central heater.
Zoning capability allows any CTH3-Series heater
(regardless of input) to modulate based on the signal
from the central heater. During modulation, each
satellite heater will operate at the same percentage
of full rated input as the central heater.
10.2.1 Central Heater Configuration
Central heater configuration is set by positioning of
jumpers on pin blocks (J10 and J9) located on the
control inside the heater compartment, See Page 40,
Figure 23. Jumper position on J10 shown in Figure
23, will configure heater as a central heater and at
the same time configure the heater for the desired
heat demand device (zone sensor, thermostat,
analog input, or 10K Ohm pot.). If j
umpers on J10 are
positioned for "analog", jumper on J9 must be
positioned for either 0-10 Vdc or 4-20 mA. If jumpers
on J10 are not positioned for "analog", the J9 jumper
may be left alone.
FIGURE 23: Central Heater Jumper Settings