18
jurisdiction. USE COPPER WIRE
ONLY. Provide separate branch electric
circuit with field supplied disconnect
switch.
Location of disconnect switch to be in
clear site, accessible and in close
proximity to the unit.
Correct polarity MUST be maintained for
115 V wiring. If polarity is incorrect, unit
will NOT operate.
Use a separate fused branch electrical
circuit containing a properly sized fuse
or circuit breaker. Run this circuit directly
from the main switch box to an electrical
disconnect that is readily accessible and
located near the air handler. Connect
from the electrical disconnect to the
junction box on the left side of the air
handler, inside the blower compartment.
For the proper connection, refer to the
appropriate wiring diagram located on
the inside cover of the air handler
control box and in these instructions.
The electrical junction box may be
moved to the right side if necessary. A
knockout is provided. Seal the opposite
hole with plug provided.
Make all electrical connections in
accordance with the latest edition of the
National Electrical Code, ANSI/NFPA70
and local codes having jurisdiction.
These may be obtained from:
National Fire Protection
Association, Inc.
Batterymarch Park
Quincy, MA 02269
CSA - International
178 Rexdale Blvd.
Etobicoke (Toronto), Ontario
Canada M9W, 1R3
ELECTRICAL WIRING
TURN OFF ELECTRIC POWER AT
FUSE BOX OR SERVICE PANEL
BEFORE MAKING ANY
ELECTRICAL CONNECTIONS.
FAILURE TO DO SO CAN CAUSE
ELECTRICAL SHOCK RESULTING
IN PERSONAL INJURY OR DEATH.
THE CABINET MUST HAVE AN
UNINTERRUPTED GROUND
ACCORDING TO THE LATEST
EDITION OF THE NATIONAL
ELECTRICAL CODE (NEC), ANSI/
NFPA70- OR IN CANADA, THE
CANADIAN ELECTRICAL CODE,
CSA-C221 OR LOCAL CODES
THAT APPLY. DO NOT USE GAS
PIPING AS AN ELECTRICAL
GROUND. A GROUND SCREW IS
PROVIDED IN THE JUNCTION
BOX. FAILURE TO DO SO CAN
CAUSE ELECTRICAL SHOCK,
RESULTING IN PERSONAL
INJURY OR DEATH.
THIS AIR HANDLER IS EQUIPPED
WITH A BLOWER DOOR SAFETY
SWITCH. DO NOT DISABLE THIS
SWITCH. FAILURE TO FOLLOW
THIS WARNING CAN RESULT IN
ELECTRICAL SHOCK, PERSONAL
INJURY OR DEATH.
IMPORTANT: The air handler must
be installed so that the electrical
components are protected from water
(condensate).
Before proceeding with the electrical
connections, be certain that the
voltage, frequency and phase
corresponds to that specified on the
air handler rating plate. For single air
handler application, maximum over-
current protection is 15 amperes.
IF A DISCONNECT SWITCH IS TO
BE MOUNTED ON THE UNIT,
SELECT A LOCATION WHERE A
DRILL OR FASTENER WILL NOT
CONTACT ELECTRICAL OR
HYDRONIC COMPONENTS.
ELECTRICAL SHOCK CAN CAUSE
PERSONAL INJURY OR DEATH.
NOTE: Prior to making any electrical
connections, ensure that supply
voltage, frequency, and phase are as
specified on unit rating plate.
Check to ensure that the existing
electrical service is adequate to
handle the additional load imposed by
the Hydronic Air Handler. Refer to
unit wiring diagram for proper
electrical connections.
All electrical connections MUST
comply with NEC and any other local
codes or ordinances having
!
WARNING
!
WARNING
!
WARNING
!
CAUTION
THERMOSTAT
The room thermostat must be com-
patible with the integrated air handler
control on the air handler. Generally,
all thermostats that are not of the
“current robbing” type are compatible
with the integrated air handler control.
The low voltage wiring should be
sized as shown (see Figures 12 and
13).
NOTE: Do not use 24 volt control
wiring smaller than No. 18 AWG.
Install the room thermostat in
accordance with the instruction sheet
packed in the box with the thermostat.
Run the thermostat lead wires inside
the blower compartment and connect
to low voltage terminals as shown on
the wiring diagram. Never install the
thermostat on an outside wall or
where it will be influenced by drafts,
concealed hot or cold water pipes or
ducts, lighting fixtures, radiation from
fireplace, sun rays, lamps, televisions,
radios or air streams from registers.
Refer to instructions packed with the
thermostat for “heater” selection or
adjustment.
ACCESSORIES
FIELD-INSTALLED
OPTION ACCESSORIES
ELECTRONIC AIR CLEANER
Line voltage power can be supplied
from the screw terminal “EAC” and a
line voltage neutral screw terminal on
the control board. This will power the
electronic air cleaner whenever the
circulating air blower is in operation.
Expansion Tank:
Expansion tank for closed systems
air separator – TACO Model 49-075.