Damper Transformer - Zonex DigiTract 4-2 Installation Manual

The 24V transformer connected to TR1 and TR2 of the Digitract 4-2
System Controller powers the zone dampers. The power rating of the
transformer must be sufficient to power the number of dampers used.
Also, a properly rated in line fuse must be used on the secondary of
the transformer. To determine the power rating of the transformer and
NUMBER
DAMPERS
Notice: All wiring must meet state and local codes.
1. If no heating system, go to step 12.
2. At System Controller:
a. Disconnect LAS sensor at + - terminals and place jumper wire
between + - terminals.
b. Turn power switch ON.
3. Turn off all thermostats except zone 1.
4. At zone 1 thermostat:
a. Set power switch on.
b. Set to Heat mode.
c. Set Fan switch to Auto mode.
d. Set heat setpoint several degrees above room temperature.
5. At System Controller:
a. Verify W and PWR lights are on. If not, cycle System Controller
power switch OFF and then ON and recheck.
b. If jumper JU1 is on B, verify G light is on.
c. Verify DPR 1 light is off and DPR 2 through DPR 4 lights are on.
6. At HVAC unit, verify furnace is on and blower fan is running. If the
G light on System Controller is not on, the blower fan is controlled
by the furnace and there will be a delay before it turns on.
7. At zone 1, verify air is coming out of the register/diffuser.
8. At next zone:
a. Verify air is not coming out of register/diffuser.

DAMPER TRANSFORMER

TRANSFORMER/FUSE SIZING
TR SERIES TR SERIES TR SERIES TR SERIES
OF (SPRING OPEN) DAMPERS (SPRING OPEN) DAMPERS (SPRING OPEN) DAMPERS (SPRING OPEN) DAMPERS
XFMR PWR
1 12 VA
2 24 VA
3 36 VA
4 48 VA
5 60 VA
6 72 VA
7 84 VA
8 96 VA
9 108 VA
10 120 VA
11 132 VA
12 144 VA
STARTUP TEST, GAS/ELECTRIC DTGE4-2
the amperage rating of the fuse, use the table below. If using a
combination of spring open and power open dampers, size as if all
dampers are spring open.
Note: The System Controller and thermostats are powered by the
HVAC unit transformer via terminals R and C.
MED. PRESSURE/HEAVY DUTY MED. PRESSURE/HEAVY DUTY MED. PRESSURE/HEAVY DUTY MED. PRESSURE/HEAVY DUTY
(POWER OPEN) DAMPERS (POWER OPEN) DAMPERS (POWER OPEN) DAMPERS (POWER OPEN) DAMPERS
FUSE SIZE
XFMR PWR XFMR PWR
1 AMP 6 VA
2 AMP 12 VA
2 AMP 18 VA
3 AMP 24 VA
3 AMP 30 VA
4 AMP 36 VA
5 AMP 42 VA
5 AMP 48 VA
6 AMP 54 VA
6 AMP 60 VA
7 AMP 66 VA
7 AMP 72 VA
b. At thermostat:
b-1 Set power switch on.
b-2 Set to Heat mode.
b-3 Set Fan switch to Auto mode.
b-4 Set heat setpoint several degrees above room
temperature.
c. Verify air is now coming out the register/diffuser.
9. At previous zone, turn thermostat off and verify air stops coming out
of the register/diffuser.
10. Repeat steps 8 and 9 for all remaining zones.
11. If no cooling system, reconnect LAS to the + - terminals of the
System Controller and test is complete.
12. Disconnect all wires from the + - terminals of the System Controller.
13. Turn off all thermostats except zone 1.
14. At zone 1 thermostat:
a. Set power switch on.
b. Set to Cool mode.
c. Set Fan switch to Auto mode.
d. Set cool setpoint several degrees below room temperature.
23
FUSE SIZE FUSE SIZE
1 AMP
1 AMP
1 AMP
2 AMP
2 AMP
2 AMP
3 AMP
3 AMP
3 AMP
3 AMP
4 AMP
4 AMP