Schwank ThermoControl Plus 4 - Manual (Page 22)

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6.2 Sensor connections
The sensor is connected with two wires. The sensor does not require shielded cable, because the
controller includes effective protection. The l ength of wire up to 650 ft (200 m) does not influence
the accuracy of the temperature measurement. Do not run the s ensor lead next to high voltage
wires. The sensor connection must match the selected operating program (single- and/or two-stage
zones). Unused inputs must be kept free of usage!
6.3 Heater Connection
Only 24Vac Class 2 equipment can be connected to the controller!
The controller interior
relays switch 24Vac to the connection terminals (w et contact). Use 24Vac Class 2 rated power
relays to control heaters and ancillaries. Note that the total load is limited to 6.3 A.
6.4 Zone Configuration – Standard Tube Heaters (single firing rate)
Standard tube heater
zones can be set up as single-stage, or two-stage. Two-stage zones have a
proportion of the heaters on low-stage, with the balance of the heaters in the zone on high-stage.
Refer to sections 5 and 5.2. A zone can contain up to ten standard tube heaters. The location of
the jumper in P1 … P5 determines the quantity of single-stage and two-stage zones. Refer to
configuration diagram below and wiring diagram (8.1) for standard tube heaters.
Error Output
Eight relays supplied
! See Section 6.11
Jumper Pins are
located inside the
controller to the
right side of the
battery.
Jumper position
(P1 … P5)
determines the
zone strategy for
quantity of single-
DO NOT USE FAN
OUTPUTS
(SEE SECTION 5.2)
FAN OUTPUTS
FOR TWO-STAGE
LUMINOUS ONLY