Checking And Adjusting Controls; Maintenance; Relief Valve; Conventional Expansion Tank - Bryant BW4 Installation Instructions Manual

BOILER
BASE MODEL
INPUT (BTUH)
91,000
105,000
0
140,000
126,000
175,000
0
210,000
245,000
0
280,000
Note: All Riello 40 F ---5 and F ---10 oil burners are factory preset at 145
psig.

Checking and Adjusting Controls

WARNING
!
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury or death.
Do not attempt to start the burner when excess oil has
accumulated, when unit if full of vapor, or when the
combustion chamber is very hot.
IMPORTANT: These instructions must be followed carefully.
A. Adjusting Operating Controls
Instructions for each control are included. Refer to Table 8 for
recommended settings for the first adjustment:
These settings can be changed after gaining familiarity with how
system responds. If system does not give quite enough heat in
very cold weather, ,the high limit setting can be raised to 220_F.
If more domestic hot water is required, the low limit setting can
also be raised
B. Checking Thermostat Opeation
When set above temperature indicated on thermometer, boiler
burner should start. Make certain thermostat shuts boiler down
when room temperature reaches selected setting and starts boiler
operating when room temperature falls a few degrees.
NOTE: Do not start burner unless all cleanout doors are secured
in place.

MAINTENANCE

To assure trouble- -free operation, we recommend that flue
passages, burner, combustion chamber area (target wall and fire
door insulation), burner adjustment, operation of controls, and
boiler seals (door gasket or silicone seal, cast iron seals and flue
collector) be checked ONCE EACH YEAR by a competent
service technician.
BEFORE THE START OF EACH SEASON (or whenever
system has been shut down for some time), recheck the whole
system for leaks and recheck boiler and vent pipe for leaks.
Replace or patch any boiler seals that are faulty.
Table 8 – Riello Oil Burner Specifications
DELEVAN FIRING
OIL NOZZLE RATE (GPM)
0.50--- 70ºW 0.65
0.65--- 70ºW 0.75
0.85--- 70ºW 1.00
0.75--- 70ºW 0.9
1.00--- 70ºW 1.25
1.25--- 70ºW 1.5
1.50--- 70ºW 1.75
1.75--- 70ºW 2.00
16
TURBULATOR/AIR
SHUTTER SETTING
0.5 / 2.0
2.0 / 2.2
2.0 / 3.2
1.5 / 2.6
2.5 / 3.8
4.0 / 7.0
2.0 / 3.8
2.5 / 4.1
WARNING
!
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury or death.
Never burn garbage or paper in the unit, and never leave
combustible material around it.

Relief Valve

This valve should open automatically when system pressure
exceeds the safe limit (30 psi). Should it ever fail to open under
this condition, shut system down. Drain it until pressure is
reduced below safe limit, then have valve replaced immediately.
The relief valve should be tested monthly during heating season.
Prior to testing, make certain a discharge pipe is properly
connected to the valve outlet and arranged so as to contain and
safely dispose of boiler discharge. Hold the trip lever fully open
for at least five seconds in order to flush free any sediment that
may lodge on the valve seat. Then permit the valve to snap shut.

Conventional Expansion Tank

As previously noted, this tank may become waterlogged or may
receive an excess of air. Frequent automatic opening of relief
valve indicates waterlogging. A high boiler temperature
accompanied by unusually low radiation unit temperature (and
"knocking") indicates excess air in tank. To correct either
condition, close valve between boiler and tank. Drain tank until it
is empty. Check all tank plugs and fittings. Tighten as necessary.
Open valve between boiler and tank. Water will rise to normal
height in tank if automatic fill valve is installed, otherwise,
manually refill system.

Diaphragm Expansion Tank

As previously noted, this tank may become waterlogged or may
receive an excess of air. Frequent automatic opening of relief
valve indicates waterlogging. A high boiler temperature
accompanied by unusually low radiation unit temperature (and
"knocking") indicates excess air in tank. To correct this condition,
replace the diaphragm expansion tank.

Water System

If system is to remain out of service during freezing weather,
always DRAIN IT completely. Water left in to freeze will crack
pipes and/or boiler.

Tankless Coil (or Cover Plate Gasket)

The tankless coil gasket should be checked at least twice a year
for leakage and replaced if necessary.
OIL PUMP PRESSURE OIL
(PSIG) BURNER
155 F--- 5
150 F--- 5
170 F--- 5
160 F--- 5
170 F--- 5
175 F--- 5
155 F--- 10
155 F--- 10