Supply Air Adjustments; Ecm Variable Speed; 2.13 Installation Of Accessories; Operation - Dettson AMP Série Guide D'installation Et Manuel Du Propriétaire

2.12 SUPPLY AIR ADJUSTMENTS

(ECM VARIABLE SPEED MOTORS)
On units equipped with ECM variable speed blower motors,
the air supply must be adjusted based on heating/air
conditioning output. The start/stop delays of the blower must
also be adjusted by positioning the DIP switches on the
electronic board. Refer to the following tables, airflow tables
and the wiring diagram in this manual for the proper settings:
Table 2 - Airflow adjustments heating mode
SW1 – HEAT
DIP Switch Positions
1 2
OFF OFF
ON OFF
OFF ON
ON ON
Table 3 - Airflow adjustments air conditioning mode
SW2 – COOL
DIP Switch Positions
1 2
OFF OFF
ON OFF
OFF ON
ON ON
Table 4 - Airflow adjustments all modes
SW3 – ADJ (Adjustment)
DIP Switch Positions
1 2 POSITION
OFF OFF A
ON OFF B
OFF ON C
ON ON D
Table 5 - Delay adjustments heating mode
SW4 – Delay
DIP Switch Positions
1 2
OFF OFF
ON OFF
OFF ON
ON ON

2.13 INSTALLATION OF ACCESSORIES

WARNING
Electrical 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.
Input
USGPH
POSITION
A 0.90
B 1.10
C N / A
D N / A
Output
Tons
POSITION
A 5.0
B 4.0
C 3.5
D 3.0
CFM HTG. CFM A/C
% increase % increase
or decrease or decrease
0% 0%
+10% +10%
-10% -10%
N/A 0%
Input
USGPH
POSITION
A 0.90
B 1.10
C ALL
D ALL
2.13.1 Humidifier (HUM)
The electronic board supply 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.
2.13.3 Air Conditioner (or Heat Pump)
An air conditioning coil may be installed on the supply air
side ONLY.
Poisonous carbon monoxide gas hazard.
Install the evaporator coil on the supply side of the
furnace ducting ONLY.
Never install on the return air side of the ducting an
evaporator coil. This can result in death, bodily injury
and/or property and/or unit 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.
3

OPERATION

3.1

START-UP

Before starting up the unit, be sure to check that the
following items are in compliance:
The electrical installation, the oil supply system, the
1.
venting system,
ventilation;
The blower access door is in place and the blower
2.
rail locking screws are well tightened;
The Blocked Vent Shut-Off (BVSO) is installed
3.
according to instructions (for chimney venting);
The oil supply valve is open;
4.
The burner ''Reset'' button is well pushed in or re-
5.
armed;
9
WARNING
combustion air supply and