Addendum
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IM 1272 • OPTILINE VERTICAL FAN COILS
Installation
Mounting on electric box
1. Separate backplate from the controller by loosing the
cover screw.
2. Align the mounting holes on the screw holes of the
electric box (applicable to 65 × 65 or US standard box).
3. Fix the backplate on the electric box by tightening the
backplate screws. Suggest to use Philips wider “truss
head” or “washer head” #6-32 × 3/4" (20mm).
4. DO NOT let the bolt head rise above the wall of mounting
holes of backplate. It might cause the short circuit of the
controller.
Mounting front cover
Lock front cover on the backplate by tightening the cover screw
underneath with Philip screwdriver.
Wiring Example
1. All wires must be inserted above the retainers of
respective terminal block before tightening the captive
screws.
2. Select Normally Open or Normally Closed Cooling and
Heating valve Option in the Engineering Mode parameter
E20 and E21.
Figure 9: Wiring Diagram for TE226 – 24Vac Thermostat
Table 4: On Demand Output DO1 and DO2
Set in Engineering Mode
DO1 Cooling Output
on demand for cooling
Parameter E20 Set To :
0 Vac
0
24 Vac
1
DO2 Heating Output
on demand for heating
Parameter E21 SetTo:
0
Vac 0
24
Vac 1
AO2
RS
ESI
ECM Fan – 0~10 VDC
Remote Temperature
Sensor (NTC10K)
Occupancy
