Check Heating System And Domestic Hot Water Connections; Ensure Proper Operation Of All Safety Devices; Ensure Proper Operation Of Expansion Tank, Low Water Cut-Off (If Applicable) And Pumps; Ensure That An Adequate Combustion Air Supply Exists In The Boiler Room - Viessmann VR1 22 Installation And Service Instructions Manual

Vitorond 100, VR1 22 to 33, 91 to 140 Installation and Service
Service Procedure

Check heating system and domestic hot water connections

Ensure all connections are pressure tight.

Ensure proper operation of all safety devices

Check pressure gage, air vent and pressure relief valve.
Ensure pressure relief valve does not leak. Also ensure
pressure relief valve operates in accordance with
information provided by the manufacturer.
Ensure that an adequate combustion air supply exists
in the boiler room
Ensure fresh air intake of boiler room is open. This
opening must never be blocked or partially covered.
Ensure functionality of the barometric draft regulator
of the burner
During operation of the burner, the barometric draft
regulator installed in the vent system must move freely.
WARNING
DO NOT USE GASOLINE, CRANKCASE DRAININGS OR
ANY OIL CONTAINING GASOLINE.
WARNING
Always keep the manual fuel supply valve shut off if the
burner is shut down for an extended period of time.
WARNING
Do not tamper with the unit or controls.
WARNING
DO NOT START THE BURNER UNLESS THE
COMBUSTION CHAMBER DOOR IS SECURED
IN PLACE.
WARNING
DO NOT ATTEMPT TO START THE BURNER WHEN
EXCESS OIL HAS ACCUMULATED, WHEN THE UNIT
IS FULL OF VAPOR, OR WHEN THE COMBUSTION
CHAMBER IS VERY HOT.
WARNING
Do not fire boiler without water.
WARNING
Do not leave any tools inside combustion chamber.
(continued)
Ensure proper operation of expansion tank, low water
cut-off (if applicable) and pumps
Refer to maintenance instructions supplied with
diaphragm expansion tanks, low water cut-offs, pumps,
etc. Flush float water type low water cut-offs (if used).
The usual water fill pressure is between 10 and 15 psi
with the system cold. A lower pressure gage reading
usually indicates loss of water due to leakage.
All leaks must be corrected. Refer to instructions
packaged with automatic fill valve. Follow local
regulations with respect to backflow preventers.
If oil-lubricated pumps are used, ensure proper lubrication.
If motorized zone valves are used, refer to maintenance
instructions provided with zone valves. If an older
non-diaphragm expansion tank is used, ensure the correct
water level is present.

Calibrate the burner

Refer to the Instructions supplied with the
burner.
Note: For burner technical information refer to table on
page 38 or page 39.
Combustion analysis
This oil burner requires combustion measurements
performed at the final installation site, using calibrated
combustion equipment, to verify factory settings, or to
be used as a guide in changing burner settings to suite
local conditions.
Examples of local conditions which influence combustion
results include: weather conditions, length of horizontal
vent pipe, diameter and height of the chimney, side wall
venting (power vent), altitude above sea level, quality
and heating value of oil used, maximum number of other
fuel burning appliances running at the same time.
These conditions affect the burner set-up. The burner
must be adjusted for acceptable combustion results under
local conditions of the installation.
Combustion measurements (CO
draft and CO) are taken in the flue pipe between boiler
and barometric draft regulator before dilution air (see the
installation manual).
Overfire draft is measured at the combustion chamber
observation port opening. Over-fire draft ranges from 0
to +0.01 "w.c.. Breeching draft is approximately -0.02
"w.c.
Note: This boiler is approved for operation with a
breeching draft of up to -0.08 "w.c. (when used
without a barometric draft regulator). The expected
CO average range for #2-oil is from 11.0% to
2
13.5%.
For direct vent application, refer to the Direct
Vent System Installation Instructions.
Service
, stack temperature,
2
47