Lochinvar Crest w/RealTime O2 Trim 100 Series User Manual

2 Maintenance
Service Manual
Figure 2-4 Adjust outlet isolation valve
Test procedure
1. Place the unit into Service Mode. Navigate to the Setup
Screen from the Home Screen by pressing the SETUP
button along the left side of the screen. Enter the installer
password.
2. Select the Service Maintenance Screen. The tabs will scroll
(up and down) to reveal more options.
On the Service Maintenance Screen place heater into
Service Mode by selecting the START button. In Service
Mode the boiler will fire at ignition speed and will then
modulate up to full fire.
3. Allow the unit to progress through its normal diagnostics
and pre-purge programming.
4. Allow the unit to fire and operate until the temperatures
stabilize. This occurs when the inlet and outlet temperatures
are rising together and the Delta T (T) is maintained.
5. When the unit stabilizes, begin to slowly shut off the
isolation valve on the outlet piping of the boiler (see FIG.
2-4). This will begin to restrict the flow and simulate a low
flow condition.
6. While slowly shutting off the isolation valve, refer to the
Status Screen to watch the behavior of the boiler. This
screen allows you to monitor the inlet temperature, outlet
temperature, and T.
7. When the  T reaches 70˚F, the control will attempt to
modulate the firing rate down to protect it from low flow
conditions.
8. When the T reaches 80°F, the control
module will turn off the burner. If
the control module shuts down, the test was successful.
9. Completely open the isolation valve on the outlet piping of
the boiler.
10. Resume operation.
IMG01035
A
DJUST OUTLET
ISOLATION VALVE
ONLY
40
Test low water flow conditions
NOTICE
This test is to be carried out once the
Crest boiler is completely piped in with
adequate gas and water flow. Once
the test is completed, ensure that the
isolation valve is opened up to allow full
water flow.
Handling ceramic fiber materials
REMOVAL OF COMBUSTION CHAMBER
LINING
Normal operating temperatures in this appliance are below
the level to convert ceramic fibers to cristobalite. Abnormal
operating conditions would have to be created to convert
the ceramic fibers in this appliance to cristobalite.
The ceramic fiber material used in this appliance is an
irritant; when handling or replacing the ceramic materials it
is advisable that the installer follow these safety guidelines.
Avoid breathing dust and contact with skin and eyes.
• Use NIOSH certified dust respirator (N95).
This type of respirator is based on the OSHA
requirements for cristobalite at the time this
document was written. Other types of
respirators may be needed depending on the job
site conditions. Current NIOSH
recommendations can be found on
the NIOSH website at http://
www.cdc.gov/niosh/homepage.
html. NIOSH approved respirators,
manufacturers, and phone numbers
are also listed on this website.
• Wear long-sleeved, loose fitting clothing, gloves, and
eye protection.
Apply enough water to the combustion chamber lining
to prevent airborne dust.
 Remove the combustion chamber lining from the
boiler and place it in a plastic bag for disposal.
 Wash potentially contaminated clothes separately
from other clothing. Rinse clothes washer thoroughly.
NIOSH stated First Aid.
 Eye: Irrigate immediately.
 Breathing: Fresh air.
⚠WARNING
The combustion chamber insulation in this
appliance contains ceramic fiber material.
Ceramic fibers can be converted to cristobalite
in very high temperature applications. The
International Agency for Research on Cancer
(IARC) has concluded, “Crystalline silica
in the form of quartz or cristobalite from
occupational sources is carcinogenic to
humans (Group 1).”

Lochinvar Crest w/RealTime O2 Trim 100 Series Specifications

General

Brand	Lochinvar
Model	Crest w/RealTime O2 Trim 100 Series
Category	Boiler
Language	English