Amana MBVC, Installation Instructions Manual

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5
The power supply wires must be connected to the red and
black power wiring. Two wire nuts are provided in the bag
assembly for this connection. Wrap the wire nuts with elec-
trical tape. (Insulated crimp type connectors, field supplied,
may be substituted for the wire nuts and electrical tape pro-
vided proper size connectors are used.) A ground wire MUST
be connected to the ground lug inside the unit.
L
OW
V
OLTAGE
W
IRING
Low voltage wiring connections are made at the top of the
cabinet. See the
24 Volt Thermostat Wiring section of this
manual for typical low voltage wiring connections. A mini-
mum 18 AWG wire must be used for installations up to 50
feet and 16 AWG wire for installations over 50 feet.
O
PERATION ON
208 V
OLT
S
UPPLY
The unit transformer is factory connected for 230 V opera-
tion. If unit is to operate on 208 V, disconnect the red wire
from terminal 3 of the unit transformer and connect them to
terminal 2 of the unit transformer.
24 V
OLT
T
HERMOSTAT
W
IRING
NOTE: Wire routing must not interfere with the circulator
blower operation or routine maintenance.
The modular blower’s integrated control module provides ter-
minals for “Y1” and “Y2” and “W1” and “W2” thermostat con-
nections. This allows the modular blower to support the sys-
tems shown in the table below. Refer to the following figures
for typical connections to the integrated control module. Ther-
mostat wiring entrance holes are located in the top of the
blower. Wire routing must not interfere with circulator blower
operation or routine maintenance.
NOTE: A removable plug connector is provided with the
control to make thermostat wire connections. This plug may
be removed, wire connections made to the plug, and replaced.
It is
strongly recommended that multiple wires into a single
terminal be twisted together prior to inserting into the plug
connector. Failure to do so may result in intermittent
operation.
Air Handler Integrated
Control Module
Typical Single-Stage Cool,
Single-Stage Heat Thermostat
Dehumidistat
[Optional]
Remote Condensing Unit
(Single-Stage AC)
NEU
HOT
1 2 R C G W1 Y1 Y2
O
DEHUM
R C G W1 Y1
R C Y
Place Jumper Between Y1
and O for Proper
Dehumidification Operation
and Proper Ramping
Profile Operation
W2
Figure 7-Typical Single-Stage Cooling with Single-Stage
Heating
Air Handler Integrated
Control Module
Typical Two-Stage Cool,
Two-Stage Heat Thermostat
Dehumidistat
[Optional]
Remote Condensing Unit
(Two-Stage AC)
NEU
HOT
1 2 R C G W1 W2 Y1 Y2
O
DEHUM
R C G W1 W2 Y1 Y2
R C Y1 Y2
Place Jumper Between Y1
and O for Proper
Dehumidification Operation
and Proper Ramping
Profile Operation
Figure 8-Typical Two-Stage Cooling with Two-Stage Heating
1 2 R C
Air Handler
Integrated Control Module
Typical Single-Stage Cool,
Single-Stage Heat
Heat Pump Thermostat
Dehumidistat
[Optional]
G W1 W2 Y1 Y2
O
DEHUM
Remote Condensing Unit
(Single-Stage HP)
NEU
HOT
W/E
R C G Y1
O
R C W1 Y
O
Figure 9-Typical Single-Stage Heat Pump with Auxiliary/
Emergency Heating
1 2 R C
Air Handler
Integrated Control Module
Typical Two-Stage Cool,
Two-Stage Heat
Heat Pump Thermostat
Dehumidistat
[Optional]
G W1 W2 Y1 Y2
O
DEHUM
Remote Condensing Unit
(Two-Stage HP)
NEU
HOT
W/E R C G W2 Y1 Y2
O
R C W1 Y1 Y2
O
Figure 10-Typical Two Stage Heat Pump heating and
Auxiliary/Emergency Heating
24 V
OLT
D
EHUMIDISTAT
W
IRING
The optional usage of a dehumidistat allows the modular
blower’s circulator blower to operate at a slightly lower speed
during a combined thermostat call for cooling and
dehumidistat call for dehumidification. This lower blower
speed enhances dehumidification of the conditioned air as it
passes through the AC coil. For proper function, a
dehumidistat applied to this modular blower must operate on
24 VAC and utilize a switch which
opens on humidity rise.
To install/connect a dehumidistat:
1. Turn OFF power to modular blower.
2. Secure the dehumidistat neutral wire (typically the white
lead) to the screw terminal marked “DEHUM” on the
modular blower’s integrated control module.
3. Secure the dehumidistat hot wire (typically the black
lead) to the screw terminal marked “R” on the modular
blower’s integrated control module.