Tjernlund RT1500(H) Rooftop Inducers 8504160 Rev A - Manuel (Page 15)

14
3. After speed control is installed as wired per the Manual Speed Control diagram on the bottom of Page 9, install included faceplate
to junction box and push adjustment knob onto shaft of speed control.
4. Verify that Rooftop inducer activates when speed control is switched on and that Inducer performance decreases when knob is
turned fully clockwise. This can be done by holding a candle in the unlit fireplace or stove near the flue outlet and observing flame
and smoke.
COMBUSTION AIR
Adequate combustion air is vital for proper combustion and for safe venting. Likewise, for proper Inducer performance, adequate com-
bustion air must be available to the appliance. Many installers assume adequate combustion air is present, especially in older struc-
tures. In some cases this is a false assumption, because many structures have been made "tight" due to weatherization. Size the
combustion air opening(s) into the equipment room as outlined in NFPA 31, 54 & 211. Tjernlund’s IN-FORCER
TM combustion air intake
systems provide a convenient, automated way to supply combustion air to the equipment room. When installing the Rooftop Inducer it
is not necessary to supply any more combustion air than normally required when conventional venting.
INSPECTION & MAINTENANCE
The Rooftop Inducer is designed for continuous use. The motor is equipped with permanently lubricated sealed ball bearings which do
not require oiling.
A vent pipe / chimney inspection must be performed annually. The inspection should include checking all vent pipe and connections
for blockage and leaks. A safety interlock test as outlined in Step # 11 under “RT750 / RT1500 PSA-1 Fan Proving Switch Adjustment”
starting on Page 12 must also be performed annually for models RT750 & RT1500.
For oil and solid fuel applications inspect impeller after (3) months and set up a periodic inspection and cleaning routine as necessary.
If used on a fireplace that is used regularly (2-3 times a week), semi annual chimney cleaning may be required to prevent creosote
buildup. If used on a commercial wood-fired pizza oven cleaning may be required every 2-3 months. No matter how often used, a
chimney serving wood-fired appliances should be cleaned and inspected at least once a year.
CLEANING
IMPORTANT: Disconnect the power supply when making wiring connections or when working around the fan impeller and motor.
1. Remove (2) latch screws opposite hinge side on the front of Rooftop Inducer housing. Open housing until side hinge stops
are engaged. Remove discharge grilles for greater access to impeller.
2. If necessary, use scraper and/or brush to clean soot and creosote buildup on the impeller and inside inducer base. Use caution
not to displace impeller balancing weights.
TROUBLESHOOTING
PROBLEM: Inducer Vibrates
SOLUTION: Clean Impeller.
PROBLEM: The Inducer does not operate.
SOLUTION: Confirm that the Inducer is properly wired. Verify that circuit breaker has not tripped. Check for 120 VAC at output of
speed control when turned to 100% on position (if equipped). If voltage is measured at speed control output check
for 120 VAC at junction box motor leads. If 120 VAC is present replace motor.
PROBLEM: The motor High Limit is tripping.
SOLUTION: Check to confirm that Cooling Fan is operational by supplying 120 VAC direct voltage to Cooling Fan. Make sure
that Rooftop Inducer cooling air inlets are not blocked (cooling air inlets are smaller grilles on hinged & opposite
hinged side). Verify flue gas temps are suitable for the Inducer ratings.
HOW TO OBTAIN SERVICE ASSISTANCE
If you have any questions about your Rooftop Inducer or if it requires adjustment, repair or routine maintenance, we suggest that
you initially contact your installer, contractor or service agency. If you require technical information contact Tjernlund Products, Inc.
at 1-800-255-4208 with the following information:
1. Model and Lot # of the Rooftop Inducer.
2. Name and address of installer and service agency.
3. Date of original installation and dates any service work was performed.