Installation Of Accessories; Humidifier (Hum); Electronic Air Cleaner (Eac); Air Conditioner (Or Heat Pump) - Bryant OVM098 Installation Instructions Manual

Table 2 – Airflow adjustments heating mode_ECM
motor
SW1-HEAT
DIP Switch Positions
1 2
OFF OFF
ON OFF
OFF ON
ON ON
Table 4 – Airflow adjustments all modes_ECM
motor
SW3-ADJ (Adjustment)
DIP Switch Positions
1 2 POSITION
OFF OFF A
ON OFF B
OFF ON C
ON ON D
2.13 INSTALLATION OF
ACCESSORIES
WARNING
E .
LECTRICAL SHOCK HAZARD
Turn OFF electrical power at the fuse box or service panel
before making any electrical connections and ensure a proper
ground connection is made before connecting line voltage.
Failure to do so can result in death or bodily injury.
2.13.1 Humidifier (HUM)
The electronic board supplies 120 VAC for a humidifier on the HUM
terminal. It supplies 120 VAC electric power when the burner is in

operation.

A 24 VAC signal can also be supplied from the W and C terminals on
the blower electronic board to activate a switching relay.
Also refer to the instructions supplied with the accessory.

2.13.2 Electronic Air Cleaner (EAC)

The EAC terminal on the electronic board supplies 120 VAC when the
blower is operating in the heating or air conditioning mode. This signal
can be used to activate an electronic air cleaner that is not equipped
with an air flow switch. If the cleaner is equipped with an air flow
switch, the S terminal on the PSC electronic board or one of the 120
VAC terminals on the ECM electronic board can be used to provide a
constant supply of 120 VAC.
Also refer to the instructions supplied with the accessory.
INPUT
USGPH
POSITION
A
0.70
B
0.60
C 0.50
D ALL
CFM HTG. CFM A/C.
% Increase % Increase
or decrease or decrease
0% 0%
10% 10%
-10% -10%
N/A 0%
Table 3 – Airflow adjustments air conditioning
mode_ECM motor
SW2-COOL
DIP Switch Positions
1
OFF
ON
OFF
ON
Table 5 – Delay adjustments all modes_ECM motor
SW4-Delay
DIP Switch Positions
1
OFF
ON
OFF
ON

2.13.3 Air Conditioner (or Heat Pump)

An air conditioning coil may be installed on the supply air side ONLY.
P
OISONOUS CARBON MONOXIDE GAS HAZARD
Install the evaporator coil on the supply side of the furnace
ducting ONLY.
An evaporator coil installed on the return air side of the ducting
can cause condensation to form inside the heat exchanger,
resulting in heat exchanger failure. This in turn, can result in
death, bodily injury and/or property damage.
A clearance of 15 cm (6") is required between the bottom of the coil
drain pan and the top of the heat exchanger. If a heat pump is installed,
a "dual-energy" thermostat, or other control is required, in order to
prevent the simultaneous operation of the furnace and the heat pump. It
also prevents a direct transition from heating by way of the heat pump to
heating with oil. Refer to the thermostat instructions or those of another
control used for the proper wiring.
If a coil blower compartment is used, install air tight, motorized and
automatic air dampers. Cold air coming from the coil and passing
across the furnace can cause condensation and shorten the life of the
heat exchanger.
3 OPERATION

3.1 START-UP

CAUTION
DO NOT START THE BURNER UNLESS THE BLOWER ACCESS
DOOR IS SECURED IN PLACE.
Before starting up the unit, be sure to check that the following
8
2 POSITION
OFF A
OFF B
ON C
ON D
2 POSITION
OFF A
OFF B
ON C
ON D
WARNING
.
INPUT
USGPH
3.0
2.5
2.0
1.5
INPUT
USGPH
0.70
0.60
0.50
ALL