User Manual

Serengeti-IR
™
Installation, Operation & Service
Page 28 Combustion Research Corporation
CHECK SAFETY SHUTDOWN PERFORMANCE
NOTE: Read steps 1-7 below before starting safety
shutdown or safety lockout tests for the direct ignition (DI)
module.
1. Turn gas supply off.
2. Set the thermostat or controller above room
temperature to call for heat.
3. Watch for ignition spark immediately or following
prepurge. See ignition module specifications.
4. Time length of ignition operation. See DI module
specifications.
5. After the module locks out, open gas control and
ensure there is no gas flow to main burner.
6. Set the thermostat below room temperature and wait
one minute.
7. Operate system through one complete cycle to ensure
all controls operate properly.
WARNING
ELECTRICAL SHOCK
DANGER OF SEVERE INJURY
OR DEATH
ALWAYS DISCONNECT POWER SUPPLY BEFORE
SERVICING THE BLOWER OR WORKING WITH
THE UNIT FOR ANY REASON. THIS IS
ESPECIALLY IMPORTANT WITH UNITS EQUIPPED
WITH AUTOMATIC THERMAL RESET
PROTECTION. UNIT MAY ACTIVATE WITHOUT
WARNING!
GENERAL AND YEARLY MAINTENANCE
At regular intervals or at least once a year the entire
system should be inspected.
SERENGETI-IR
™
BURNER ASSEMBLY:
The gas connecting flex should be inspected for any
cracks or breaks. Use a soap solution on the gas flex and
gas piping to verify any leaks. DO NOT USE OPEN
FLAME FOR LEAK TEST.
Check combustion air inlets and connecting duct work for
obstructions and breakage; repair as needed.
Inspect hanging hardware, such as chains, for wear. If
any wear is present, the system must not be operated until
the chain(s) or associated hardware has been replaced.
Look for any deterioration in the housing assembly.
Replace or repair.
Radiant Tubing:
WARNING
FIRE OR EXPLOSION HAZARD
FIRE OR EXPLOSION HAZARD. CAN
CAUSE DEATH, SEVERE INJURY
AND/OR PROPERTY DAMAGE.
Damaged or nonconforming radiant tubing must be
replaced with appropriate product as manufactured by
Combustion Research Corporation.
The radiant tubing should be inspected at the beginning of
every heating season. Look for cracks, holes, physical
damage, etc. Replace as needed.
NOTE:
Use only approved SERENGETI-IR
™
tube which is
specifically manufactured for the SERENGETI-IR
™
system. Use of substitute materials can result in an
unsafe condition and will void any and all warranties.
DIAGNOSIS AND TESTING SERENGETI-IR
™
BURNER
ASSEMBLY:
IF THE BURNER DOES NOT OPERATE, A "SYSTEM
CHECK" MUST BE MADE AS FOLLOWS:
SYSTEM CHECK
WARNING
FIRE OR EXPLOSION HAZARD
FIRE OR EXPLOSION HAZARD. CAN
CAUSE DEATH, SEVERE INJURY
AND/OR PROPERTY DAMAGE.
Perform the safety shutdown test any time work is
done on a gas system.
1. Check for proper installation of unit (refer to owner's
manual). If power is not present, check power supply
to input terminals with AC voltmeter and check fuse in
burner box.
2. Remove tube fitting from air switch and insert new
fitting with short rubber hose attached. Normally open
air flow switch can be operated with mouth vacuum to
check performance. If air flow switch does not close,
replace air flow switch.
3. Provided air flow switch is operating, listen for high
voltage arc, an audible spark "ticking." (DO NOT
TOUCH IGNITION OUTPUT LEADS OR IGNITION
MAINTENANCE & SERVICE
!
!
!