Aiko CTH3-200 Central and Satellite Heaters Zoning Capability, Central Heater Configuration

CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

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 jumpers 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

40 of 71