Schwank ThermoControl Plus 2 - Manual (Page 25)

- 25 -
6.6.2 Zone Configuration – Luminous (high intensity) Heaters
JUMPER IN POSITION 2 (P2): One two-stage zones + up to two single-stage zones
The jumper pins P1 to P3 are located inside the controller cover to the right side of the battery. The
location of the jumper in P1 … P3 determines the quantity of single-stage and two-stage zones.
With the jumper in position P2, one zone is two-stage, and the balance of the zones are single
stage. Four relay switches are supplied with the controller to switch line voltage to the zone
exhaust fans (field supplied) and to the zone transformers (field supplied).
One additional field supplied relay switch (P/N: JS-0568-CC) is required to power the exhaust fan
for the two-stage zone. Refer to Section 6.7.
The fan for the two-stage zone is controlled by the controller fan outputs 10-11. Fans for the single-
stage zones are controlled by the heater outputs 24-27. Single-stage zone exhaust fans are wired
in parallel to the heater zone transformer.
The 120V/24Vac zone transformer is ‘sized’ to provide sufficient power to all heaters in the zone:
40VA for first heater + 20 VA for each additional heater. A separate transformer is required for
each of the Low- and High-stage zones in two-stage Zone 1.
Refer to the diagram below, and the wiring diagram “Luminous Heaters – Two-Stage Zone”.
Zone exhaust fans
(field supplied)
* One additional field
supplied relay switch
(for exhaust fan) is
required for each two-
stage zone