P7810C,D PRESSURETROL
®
CONTROLLER
65-0235—1
8
Honeywell Europe S.A.
3 Avenue du Bourget
1140 Brussels
Belgium
Honeywell Asia Pacific Inc.
Room 3213-3225
Sun Hung Kai Centre
No. 30 Harbour Road
Wanchai
Hong Kong
Home and Building Control
Honeywell Limited/Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario
M1V 4Z9
Honeywell Latin American Region
480 Sawgrass Corporate Parkway
Suite 200
Sunrise FL 33325
65-0235—1 G.R. Rev. 11-98
Home and Building Control
Honeywell
1985 Douglas Drive North
Minneapolis MN 55422-4386
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
www.honeywell.com/building/components
5. Turn the modulation setpoint dial slowly
counterclockwise and make sure the firing rate motor
continues to move to the closed position. Make sure the
firing rate motor reaches the lowfire position when the
modulation setpoint reaches the pressure point
identified in step 4 above. (Alternately, make sure the
measured current decreases gradually toward 4 mA.)
Check the limit setpoint as follows (boiler pressure required):
1. Turn the control setpoint dial clockwise until the control
circuit closes. Make sure the yellow LED is flashing and
the green LED is on, indicating normal operation with a
call for heat.
Turn the limit setpoint dial slowly counterclockwise and make
sure that the P7810 opens the circuit and indicates a safety
lockout by alternately flashing the yellow and green LED (see
LED Display section) when the limit setpoint passes through
the boiler pressure gauge value.
Check for normal system operation as follows:
1. Set all dials to the required operating position.
2. Press the reset button to clear the safety lockout
condition.
3. Start the system and observe the operation through at
least one complete cycle to make sure the P7810
functions properly as described in the Operation
section.
TROUBLESHOOTING
WARNING
Electrical Shock Hazard.
Can cause electrical shock, serious injury
or death.
Line voltage is present at the P7810 and in all
controller circuits. Use extreme care while
troubleshooting.
To determine control malfunctions, use checkout procedures
as listed in the Checkout section.
CAUTION
Equipment Damage Hazard.
Can cause equipment damage or improper
operation.
Do not put the system into service until you have
satisfactorily completed all applicable tests described
in this Checkout section, and also all tests in the
Checkout section of the applicable instructions for the
primary safety control and any other tests the burner
and boiler manufacturers require.
SERVICE INFORMATION
WARNING
Electrical Shock Hazard.
Can cause electrical shock, serious injury
or death.
1.
Only qualified Flame Safeguard technicians
should attempt to service Flame Safeguard
controls and burners.
2.
Line voltage is present in the electrical circuits to
the P7810 Pressuretrol® Controller. Open the
master electrical switch before replacing the
device. More than one power supply disconnect
may be involved.
Scheduled Inspection and Maintenance
Calibration
The P7810 Pressuretrol® Controller was carefully calibrated
during manufacturing and does not require field calibration.
Maintenance
Keep the cover of the P7810 Pressuretrol® Controller in place
at all times to protect the internal components from dust, dirt
and physical damage. Routine maintenance consists of
occasional inspection and removal of accumulated dirt and
dust. Make sure the P7810 Pressuretrol® Controller is
functioning properly by performing an operational check of the
entire system during routine maintenance checks.
