Installation Of The Burner; Nozzles; Air And Turbulator Settings; Post Purge Delay Adjustment - Bryant OVM098 Installation Instructions Manual

Figure 7 – Thermostat wiring, heating and air
conditioning/heat pump with ECM variable speed
motor
Note: On units with 2-stage cooling or heat pump, terminal Y1
must be used. When Y1 on the electronic control receives a 24
VAC signal, the airflow is reduced by 20%. Do not use termninal
Y1 with a single stage cooling or heat pump.
2.5 INSTALLATION OF THE
BURNER
Refer to the burner manufacturer's instructions. Also, the burner must
be installed always in the same way independently of the furnace
orientation.
1. Position the mounting gasket between the mounting flange
and the burner mounting plate. Align the holes in the burner
mounting plate with the studs on the mounting flange and bolt
securely in place.
2. Remove the burner drawer assembly or the air tube assembly;
3. Install the nozzle (refer to Technical Specifications in Table 6);
4. Check the electrode settings;
5. Make the electrical connections;
6. Complete oil line connections.

2.5.1 Nozzles

The burner comes equipped with an appropriate nozzle. However,
if another size or a replacement nozzle is required, use the
manufacturer's recommended spray angle and type as shown in Table
6 and based on a pump pressure of 100 psi.
Always select nozzle sizes by working back from the desired flow rate
at operating pressure and not the nozzle marking.

2.5.2 Air and Turbulator Settings

Before starting the burner for the first time, adjust the air and turbulator
settings to those listed in this manual (Table 6). Once the burner
becomes operational, final adjustments will be required. Refer to the
section 3 of this manual.

2.5.3 Post purge delay adjustment

The post purge delay on the oil-fired burners is factory set to zero
second. This delay is applicable for all installations with chimney
venting. For heating units installed with side wall venting and a burner
equipped with this feature, the post purge delay must be set to 15
seconds. No delay is required for Riello burners. Refer to the burner
control instruction manual and markings for proper adjustment of the
post purge delay.

2.6 VENTING

WARNING
P
OISONOUS CARBON MONOXIDE GAS
.
HAZARD
Read and follow all instructions in this section.
Never install a hand operated damper in the vent pipe.
However, any Underwriters Laboratories listed, electrically
operated automatic type vent damper may be installed if
desired. Be sure to follow the instructions provided with vent
damper. Also, read and follow all instructions in this section of
the manual.
Failure to properly vent this furnace or other appliances can
result in death, bodily injury and/or property damage.
To ensure the safe and proper functioning of an oil furnace, it must
always be connected to a flue with sufficient draft or to an approved
side-wall venting system. In addition, it is strongly recommended to
perform a complete inspection of all the existing venting systems.

2.6.1 Masonry chimney

This furnace can be vented into an existing masonry chimney. However,
the unit must not be vented into a chimney into which a solid fuel
burning furnace is already being vented.
Before venting this furnace into a chimney, its condition must be
checked and repairs made, if necessary. Also, the chimney lining
and dimensions must conform to local and national codes.

2.6.2 Factory-built chimneys

Oil fired furnaces are approved for use with "L" type vents. The unit
may also be used with an approved chimney of proper dimensions
and temperature ratings as specified in the installation code. Refer to
chimney manufacturer's instructions for proper installation.

2.6.3 Draft regulator

It is recommended that a draft regulator be installed in cases where
the draft is either high or variable due to external conditions. Follow the
instructions provided with the regulator.
2.6.4 Side-wall Venting and Mobile Homes
/ Recreational Vehicules
The heating unit is approved for side-wall venting. This system is
comprised of a model VTK-54 / VTK-098 / KLAVT0101DET side-wall
venter and a 4" insulated vent pipe, model IFV-410 / IFV098-10 /
KLAFV0101DET, IFV-420 / IFV098-20 / KLAFV0201DET. Refer to the
installation instructions provided with the venting system.
Side-wall venting is required for mobile home and recreational vehicules
5
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FIRE AND EXPLOSION