Automatic Operation Of Vent Damper; Manual Operation Of Vent Damper; Gas Supply Piping; Checking Gas Supply - Carrier B Series Installation, Start-Up, And Operating Instructions Manual

HORIZONTAL INSTALLATION
FLOW
TO FURNACE VENT TO CHIMNEY
OR BOILER DAMPER
VERTICAL INSTALLATION
TO CHIMNEY
VENT
DAMPER
FLOW
TO FURNACE
OR BOILER
Fig. 8—Horizontal and Vertical Vent Damper Installation
DAMPER CLOSED
Fig. 9—Vent Damper Position Indicator
PROCEDURE 1—AUTOMATIC OPERATION OF VENT DAMPER
For safe, efficient operation, vent damper and all flue product carrying areas of appliance must be checked annually with particular attention given
to deterioration from corrosion or other sources. If corrosion or other deterioration is observed, contact your heating contractor for repairs. Check
vent damper operation as follows:
1. When boiler is off, check that vent damper position indicator points to CLOSED position. (See Fig. 9.)
2. Adjust thermostat or controller up to call for heat and check that vent damper indicator points to OPEN position. (See Fig. 9.)
3. Adjust thermostat or controller down again and check that vent damper position indicator returns to CLOSED position.
4. If system has central air conditioning, set thermostat to COOL and adjust it down to call for cooling. Cooling system should operate.
5. Return thermostat to desired setting.
The vent damper must be inspected at least once a year by a trained, experienced service technician. The name of the person who originally
installed vent damper is shown on installation label.
PROCEDURE 2—MANUAL OPERATION OF VENT DAMPER
The vent damper may be placed in OPEN position to permit burner operation by using the HOLD DAMPER OPEN switch located on damper
controller. The thermostat controls burner firing as before while damper remains open. DO NOT turn damper open manually or motor damage
will result. Set switch to AUTOMATIC OPERATION to close vent damper during burner off cycle.
For further information and for a vent damper troubleshooting guide, refer to the manual packaged with vent damper.
PROCEDURE 1—CHECKING GAS SUPPLY
The gas pipe to boiler must be correct size for length of run and Btuh input of all gas utilization equipment connected to it. See Table 4 for proper
size. Be sure gas line complies with local codes and gas company requirements.
NO
YES YES
NO
INSTALL VENT DAMPER WITH
ACTUATOR TO SIDES OF
VENT ONLY. DO NOT MOUNT
ABOVE OR BELOW VENT.
ACTUATOR MAY BE
INSTALLED IN
ANY POSITION
DAMPER OPEN
VENT DAMPER OPERATION

GAS SUPPLY PIPING

CAUTION: Do not install
the vent damper
within 6 in. (152 mm) of
combustible material.
INSTALL
DAMPER
HERE
2
A95145
BOILER
1. Install the vent damper to service only the single appliance for
which it is intended. If improperly installed, a hazardous condition,
such as an explosion or carbon monoxide poisoning, could result.
2. Do not install the vent damper on vent pipe curve.
3. Do not run wires near high temperature surfaces. Use stand-off
brackets if necessary.
Fig. 10—Typical Installation for Vent Damper
A95147
—12—
NOT
HERE
1
3
WATER HEATER
(Note Caution and Footnotes)
CHIMNEY
A95146