02/04/2014 9
NI804
Electrical Installation
WARNING
TO AVOID THE RISK OF ELECTRIC SHOCK OR DEATH, WIRING TO THE UNIT MUST BE
PROPERLY GROUNDED. FAILURE TO PROPERLY GROUND THE UNIT CAN RESULT IN A
HAZARD LEADING TO PERSONAL INJURY OR DEATH.
Line Voltage
The nameplate and/or Installation and Operating Manual specification page provides kW rating and
operating current requirements for each specific model. Select the proper wire size to comply with your
type of wire routing and NEC field wiring requirements.
Field connection is at this product’s furnished circuit breaker. This integrated circuit breaker is a proper
local disconnect.
WARNING
USE ONLY COPPER WIRE FOR CONNECTION TO THE CIRCUIT BREAKER TERMINALS AND
INSIDE THIS PRODUCT’S CABINET.
If the 240 power service is to be wired as single feed, order option circuit breaker single feed bus bar, part
number 5701.
WARNING
DISCONNECT ALL ELECTRICAL POWER BEFORE ELECTRICALLY CONNECTING OR
SERVICING THE UNIT. FAILURE TO DISCONNECT THE ELECTRICAL POWER BEFORE
WORKING ON THIS PRODUCT CAN CREATE A HAZARD LEADING TO PERSONAL INJURY
OR DEATH.
WarmFlo Controller –
Inside View, Left Board
Remote Sensor
Duct sensor, A-coil not in supply plenum
– the duct sensor (shorter cable, black wire on ST terminal) is
installed approximately 24” above (or airflow distance from element) the Electric Furnace or electric
elements. Drill a ½” hole, approximately plenum center.
If there is not adequate plenum distance, pick the largest distribution duct and install towards the top of
the horizontal duct. Locate, common sense, in the maximum warm air stream.
Duct sensor, A-coil in supply plenum
– the duct sensor (shorter cable, black wire on ST terminal) is
installed on the warm side of the coil and 4” to 6” after the coil. If it is an A-coil, pick the side which
appears to have the most airflow distribution (facing A-coil) and drill a ½” hole approximately 2” from
the side edge.
Again the key is getting this sensor in the maximum warm air stream, the air coming through the A-coil
fins will all be on the edge of the plenum.
Note
: The black tip inside of the white tube is the sensor itself. It must be positioned slightly
sticking out of the white tube. The only purpose of the white tube is physical protection, once it
is installed it is okay to push out the sensor ¼” to ½” to make it more sensitive and faster
responding to the warm air stream.
