Amana MEC96 Series Manual page 23

115 Volt Line Connections
Before proceeding with electrical connections, ensure
that the supply voltage, frequency, and phase correspond
to that specified on the unit rating plate. Power supply to
the furnace must be NEC Class 1, and must comply with
all applicable codes. The furnace must be electrically
grounded in accordance with local codes or, in their
absence, with the latest edition of The National Electric
Code, ANSI NFPA 70 and / or The Canadian Electric Code
CSA C22.1.
Use a separate fused branch electrical circuit containing
properly sized wire, and fuse or circuit breaker. The fuse
or circuit breaker must be sized in accordance with the
maximum overcurrent protection specified on the unit
rating plate. An electrical disconnect must be provided at
the furnace location.
Connect hot, neutral, and ground wires as shown in the
wiring diagram located on the unit's blower door. Metal
conduit is not considered a substitute for an actual ground
wire to the unit. For direct vent applications, the cabinet
opening to the junction box must be sealed air tight using
either an UL approved bushing such as Heyco Liquid
Tight or by applying non-reactive UL approved sealant to
bushing.
Line polarity must be observed when making field
connections. Line voltage connections can be made
through either the right or left side panel. The furnace is
shipped configured for a left side electrical connection with
the junction box located inside the burner compartment. To
make electrical connections through the opposite side of
the furnace, the junction box must be relocated to the other
side of the burner compartment prior to making electrical
connections. To relocate the junction box, follow the steps
shown below.
NOTE: Wire routing must not to interfere with
circulator blower operation, filter removal, or
routine maintenance.
Junction Box Relocation
Edges of sheet metal holes may be sharp. Use gloves as a
precaution when removing hole plugs.
To prevent personal injury or death due to electrical shock,
disconnect electrical power before installing or servicing
this unit.
WARNING
WARNING
HIGH VOLTAGE
To avoid the risk of injury, electrical shock
or death, the furnace must be electrically
grounded in accordance with local codes or
in their absence, with the latest edition of the
National Electric Code.
Line voltage connections can be made through either the
right or left side panel. The furnace is shipped configured
for a left side electrical connection. To make electrical
connections through the opposite side of the furnace,
the junction box must be relocated to the left side prior to
making electrical connections. To relocate the junction box,
perform the following steps.
1. Remove the burner compartment door.
2. Remove and save the two screws securing the
junction box to the side panel.
3. Relocate junction box and associated plugs and
grommets to opposite side panel. Secure with screws
removed in step 2.
To ensure proper unit grounding, the ground wire should
run from the furnace ground screw located inside the
furnace junction box all the way back to the electrical
panel.
NOTE: Do not use gas piping as an electrical
ground. To confirm proper unit grounding,
turn off the electrical power and perform the
following check.
1. Measure resistance between the neutral (white)
connection and one of the burners.
2. Resistance should measure 10 ohms or less.
This furnace is equipped with a blower door interlock
switch which interrupts unit voltage when the blower door
is opened for servicing. Do not defeat this switch.
24 Volt Thermostat Wiring
IMPORTANT NOTE: Wiring Routing must not
interfere with circulator blower operation, filter
removal or routine maintenance.
Low voltage connections can be made through either the
right or left side panel. Thermostat wiring entrance holes
are located in the blower compartment. The following figure
shows connections for a "heat/cool system".
This furnace is equipped with a 40 VA transformer to
facilitate use with most cooling equipment. Consult the
wiring diagram, located on the blower compartment door,
for further details of 115 Volt and 24 Volt wiring.
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WARNING