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External Wiring
SECTION VII - External Wiring
Installation Compliance
All field wiring made during installation must
comply with:
-
National Electrical Code NFPA 70 and
any other national, state, provincial or
local codes or requirements.
-
In Canada, CSA C22.1 Canadian
Electrical Code Part 1, and any other
local codes.
ELECTRICAL SHOCK HAZARD
Before making any electrical connection
to the MODULATING DELTA, discon-
nect electrical power supply at the ser-
vice panel. Failure to comply can cause
severe personal injury or death.
Line Voltage Connections
1. Connect 120 VAC power wire to the line
voltage terminals strip located behind the
control cover.
2. Route the incoming 120 VAC power wire
through the left side jacket panel.
3. The appliance is provided with a service
switch. Check local code requirements for
compliance.
If local electrical codes or conditions
require an additional service switch, the
installer must provide and install a fused
disconnect or 15 amp (minimum) service
switch.
Thermostat Wiring
1. Connect room thermostat or the end switch
(isolated contact only) of a relay control
panel to terminals 7 and 8 on the low volt-
age terminal strip located behind the con-
trol cover.
2. For proper operation, install the room ther-
mostat on an inside wall away from influ-
ences of heat and cold, i.e. water pipes,
areas of draft, lighting fixtures and fire-
places.
3. Set the thermostat anticipator (if applica-
ble) as follows:
-
Set for 0.2 amps when wired directly to
terminals 7 and 8 on the low voltage
terminal strip located behing the con-
trol cover.
-
Set to match the total electrical power
requirements of the connected devices
when wired to zone relays or other
devices. Refer to the relay manufactur-
ers’ specifications and the thermostat
instructions for additional information
on the anticipator setting.
Outdoor Reset Sensor
1. The MODULATING DELTA may operate
with a variable primary operating tempera-
ture using an optional 12 K outdoor sensor
from Triangle Tube.
If the installer opts for a fixed operating
temperature for the primary system, the
outdoor sensor is not required and
should not be installed.
Variable range of primary operating
temperature using the optional outdoor
sensor is 140ºF to 186ºF.
2. Mount the outdoor sensor on an exterior
wall. Ensure the sensor is shielded from
direct sunlight and is not influenced by an
external heat or cooling source.
3. Wire the outdoor sensor to terminals 9 and
10, on the low voltage terminal strip locat-
ed behind the control cover.
4. Route sensor wires through the provided
openings on the left jacket panel.
NOTICE
NOTICE
NOTICE
WARNING