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f. If burner operates as described, relay is good. If
not, install new relay.
CAD CELL TEST (see Figure 27)
g. Open line switch. Clean cell face and see that
cell is securely in socket. Reconnect leads. Reset
safety switch.
h. Close line switch. If burner starts and runs
beyond safety switch cut-out time, cell is good.
If not, install new cell.
3. WARNING — Check High Limit Control
— Jumper Thermostat Terminals. Allow burner to
operate until shut-down by limit. Installation is not
considered complete until this check has been made.
REMOVE JUMPER.
4. Check low water cut off control with water level at
normal water line (see Figures 1C and 1D). Raise
thermostat setting to allow burner to operate. Open
boiler drain to allow water level to drop to bottom
of sight glass until burner operation is shut-down by
low water cut-off.
Close boiler drain and rell to normal water line.
Burner should automatically restart during ll.
Lower thermostat setting.
5.
CHECK OPERATING CONTROL on boiler
equipped with tankless heaters. With burner off,
draw hot water until burner starts, then turn off hot
water and check burner shut-down.
IF CONTROLS DO NOT MEET REQUIREMENTS
AS OUTLINED ABOVE, REPLACE CONTROL AND
REPEAT CHECK-OUT PROCEDURES.
and readjust oil pressure. If dripping or after burn
persist replace fuel pump.
K. TEST CONTROLS.
WARNING
Before installation of the boiler is considered
complete, the operation of all boiler controls must
be checked, particularly the primary control and
high limit control.
1. CHECK THERMOSTAT OPERATION. Raise and
lower thermostat setting as required to start and stop
burner.
2.
VERIFY PRIMARY CONTROL SAFETY
FEATURES using procedures outlined in
Instructions furnished with control or instructions as
follows:
CHECKOUT PROCEDURE
a. Check wiring connections. Close line switch.
Check power at control.
PRIMARY RELAY TEST
b. Disconnect cad cell leads from quick connects
on underside at primary control. Reset safety
switch.
c.
Set controller to call for heat. Burner should
start.
d. Jumper the quick connect terminals within 15 to
30 seconds. Burner should run.
e. Remove the quick connect terminals jumper.
Burner shuts down in approximately 15 to 60
seconds.