Step 7 - Txv; Start-Up; Sequence Of Operation; Care And Maintenance - HEIL FMA4X Installation Instructions Manual

INSTALLATION INSTRUCTIONS
To change the fan speed on model FMA4X:
At the motor connection plug connect the green wire to the
desired motor tap number indicated on the motor plug. (See
Figure 9) For the electric heat fan speed selection connect
the white wire to the desired motor tap number indicated on
the motor plug. See Table 2 for factory default settings.
Figure 9 - FMA4X ECM Motor Speed Taps
1 2 3 4 5
Speed Taps may be located on motor, or on
plug close to motor.
1 2 3 4 5
Figure 10 - Wiring Layout FMA4P PSC Motor disable time delay
FR
Table 2 – FMA4X ECM Motor Speed Taps
Delay-
Tap
off 18
Time(s)
Tap 1
30 ---
Tap 2
90 Default
Tap 3
30 ---
Tap 4
90 ---
Tap 5
30 ---
Step 7 — TXV (
FMA4X
NOTE: The TXVs are preset at the factory and do not need
adjustment for reliable operation.
START - UP
Refer to outdoor unit Installation Instructions for system
start -up instructions and refrigerant charging method details.

SEQUENCE OF OPERATION

NOTE: The following sequence of operation is based on
units installed with PSC motor and Time Delay Board (TDB).
For units with ECM motor, the off-delay is programmed into
6
FR
24 30
--- ---
--- Default
--- ---
Default ---
--- ---
Only)
Specifications subject to change without notice.
the motor. Follow Table 2, ECM Motor Speed Taps & the
corresponding blower off delays for each speed tap. PSC
models are factory wired with TDB active. Follow Figure 10 to
disable blower off time delay. When wired in this configuration
no blower off-delay will occur in any mode.
A. CONTINUOUS FAN
Thermostat closes R to G. G energizes and completes circuit
to indoor blower motor. When G is de -
90's blower off-delay.
B. COOLING MODE
Thermostat energizes R to G, R to Y, and R to O (heat pump
only). G energizes and completes indoor blower motor. Y
energizes outdoor unit (O is energized for heat pump). When
cooling call is satisfied, G is de - energized, there is a 90s
blower off -delay.
C. HEAT PUMP HEATING MODE
Thermostat energizes R to G and R to Y. G energizes and
completes circuit to indoor blower motor. When heating call is
satisfied, G is de -energized, there is a 90s blower off -delay.
D. HEAT PUMP HEATING WITH AUXILIARY ELECTRIC
HEAT
Thermostat energizes R to G, R to Y, and R to W1. G
energizes and completes circuit to indoor blower motor. W1
energizes electric heat relay(s) which completes circuit to
heater element(s). When W1 is de - energized, electric heat
relay(s) open, turning off heater elements. When
de -energized there is a 90s blower off -delay.
E. ELECTRIC HEAT OR EMERGENCY HEAT MODE
Thermostat energizes R to W1. W1 energizes electric heat
relay(s) which completes circuit to heater elements(s). Blower
motor is energized through normally closed contacts on fan
relay. When W1 is de - energized, electric heat relay(s) opens,
A11048
there is no blower off - delay, (units with ECM motor will have
blower off -delay based on motor speed tap selection).

CARE AND MAINTENANCE

For continuing high performance and to minimize possible
equipment failure, it is essential that periodic maintenance be
performed on this equipment. The only required maintenance
that may be performed by the consumer is filter maintenance.
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
36
Disconnect all power to unit before servicing field wires or
removing control package. The disconnect (when used)
on access panel does not allow safe service to all other
---
parts of unit.
---
If unit does not have a disconnect, disregard the foregoing.
---
Instead, make sure that a disconnecting means is within
Default
sight from, and is readily accessible from, the unit.
--- Disconnect all electrical power to unit before performing
any maintenance or service on it. Lock out and tag switch
with a suitable warning label.
The minimum maintenance requirements for this equipment
are as follows:
1. Inspect and clean or replace air filter each month or as
required.
2. Inspect cooling coil, drain pan, and condensate drain
each cooling season
necessary.
3. Inspect blower motor and wheel for cleanliness each
heating and cooling season. Clean as necessary.
Fan Coil: FMA4X, FMA4P
- - energized, there is a
WARNING
!
for cleanliness. Clean as
G is
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