Lochinvar 40 - 120, Cadet 40, Cadet 120 User's Information Manual
CAD-USER Rev A
User’s Information Manual
Models: 40 - 120
WARNING
If the information in this manual is not followed exactly, a fire or
explosion may result causing property damage, personal injury or
loss of life.
This appliance MUST NOT be installed in any location where
gasoline or flammable vapors are likely to be present.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any phone in your
building.
• Immediately call your gas supplier from a near by phone.
Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
• Installation and service must be performed by a qualified
installer, service agency, or the gas supplier.
Save this manual for future reference.
Contents
HAZARD DEFINITIONS ..................................................... 2
PLEASE READ BEFORE PROCEEDING ......................... 3
1. PREVENT COMBUSTION AIR CONTAMINATION ..... 4
2. MAINTENANCE SCHEDULE ....................................... 5
Maintenance Procedures ................................................... 6
Boiler Must Be Serviced and Maintained .................... 6
Check Boiler Area ......................................................... 6
Check Pressure Temperature Gauge ........................... 6
Check Vent Piping ........................................................ 6
Check Air Piping ........................................................... 6
Check Relief Valve ....................................................... 6
Check Condensate Drain System ............................. 6-7
Check Manual Air Vents ............................................... 8
Test Low Water Cutoff (if installed) .............................. 8
Reset Button (low water cutoff) .................................... 8
Check Boiler Piping (gas and water) ............................ 8
Operate Relief Valve .................................................... 8
Shut Boiler Down .......................................................... 8
Hazard definitions
3. OPERATING INSTRUCTIONS ..................................... 9
4. OPERATING INFORMATION
Cadet Heating Boiler Control Module ......................... 10
User Programming Sequence .................................... 11
Viewable and Changeable Control Parameters ......... 12
Access Modes ............................................................ 12
Saving Parameters ..................................................... 12
Error Codes - Lockout, Blocking and Notification ....... 13
Revision Notes ................................................. Back Cover
The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels
or to important information concerning the life of the product.
DANGER
WARNING
CAUTION
CAUTION
NOTICE
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious
injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
avoided, may result in property damage.
NOTICE indicates special instructions on installation, operation, or maintenance that are important but not
related to personal injury or property damage.
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Please read before proceeding
User’s Information Manual
NOTICE
NOTICE
The Cadet Heating Boiler Installation and
Service Manual is for use only by a qualified
heating installer/service technician. Refer
only to this User’s Information Manual
for your reference. Improper installation,
adjustment, alteration, service or
maintenance can cause property damage,
personal injury (exposure to hazardous
materials) or loss of life. Installation and
service must be performed by a qualified
installer, service agency or the gas supplier
(who must read and follow the supplied
instruction before installing, servicing, or
removing this boiler. This boiler contains
materials that have been identified as
carcinogenic, or possibly carcinogenic, to
humans).
When calling or writing about the boiler
– Please have the boiler model and serial
number from the boiler rating plate.
Consider piping and installation when
determining boiler location.
Any claims for damage or shortage in
shipment must be filed immediately
against the transportation company by the
consignee.
Factory warranty (shipped with unit) does
not apply to units improperly installed or
improperly operated.
Boiler service and maintenance –
• To avoid electric shock, disconnect electrical supply
before performing maintenance.
• To avoid severe burns, allow boiler to cool before
performing maintenance.
Boiler operation –
• Do not block flow of combustion or ventilation air to
the boiler. This boiler is equipped with a control which
will automatically shut down the boiler should air or
vent be blocked. If vent or air blockage is easily
accessible and removable, remove it. The boiler should
attempt to restart. If blockage is not obvious or cannot
be removed, have the boiler and system checked by a
qualified service technician.
• Should overheating occur or gas supply fail to shut off,
do not turn off or disconnect electrical supply to the
circulator. Instead, shut off the gas supply at a location
external to the appliance.
• Do not use this boiler if any part has been under water.
The possible damage to a flooded appliance can be
extensive and present numerous safety hazards. Any
appliance that has been under water must be replaced.
Boiler water –
• Thoroughly flush the system (without boiler
connected) to remove sediment. The high-efficiency
heat exchanger can be damaged by build-up or
corrosion due to sediment.
WARNING
Failure to adhere to the guidelines on this
page can result in severe personal injury,
death, or substantial property damage.
• Do not use petroleum-based cleaning or sealing
compounds in the boiler system. Gaskets and seals in
the system may be damaged. This can result in
substantial property damage.
• Do not use “homemade cures” or “boiler patent
medicines”. Serious damage to the boiler, personnel,
and/or property may result.
• Continual fresh make-up water will reduce boiler life.
Mineral buildup in the heat exchanger reduces heat
transfer, overheats the stainless steel heat exchanger,
and causes failure. Addition of oxygen carried in by
makeup water can cause internal corrosion. Leaks in
boiler or piping must be repaired at once to prevent
makeup water.
Freeze protection fluids –
• NEVER use automotive antifreeze. Use only inhibited
propylene glycol solutions, which are specifically
formulated for hydronic systems. Ethylene glycol is
toxic and can attack gaskets and seals used in hydronic
systems.
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User’s Information Manual
1 Prevent combustion air contamination
WARNING
WARNING
Pool and laundry products and common household
and hobby products often contain fluorine or chlorine
compounds. When these chemicals pass through the boiler,
they can form strong acids. The acid can eat through the
boiler wall, causing serious damage and presenting a possible
threat of flue gas spillage or boiler water leakage into the
building.
Please read the information listed in Table 1A. If
contaminating chemicals will be present near the location of
the boiler combustion air inlet, have your installer pipe the
boiler combustion air and vent to another location, per the
Cadet Heating Boiler Installation and Service Manual.
WARNING
If the boiler combustion air inlet is located
in any area likely to cause contamination,
or if products which would contaminate
the air cannot be removed, you must
have the combustion air and vent
re-piped and terminated to another
location. Contaminated combustion
air will damage the boiler, resulting in
possible severe personal injury, death, or
substantial property damage.
If the boiler combustion air inlet is located
in a laundry room or pool facility, for
example, these areas will always contain
hazardous contaminants.
To prevent the potential of severe
personal injury or death, check for areas
and products listed in Table 1A before
installing the boiler or air inlet piping.
If contaminants are found, you MUST:
• Remove contaminants permanently.
—OR—
• Relocate air inlet and vent
terminations to other areas.
Table 1A Corrosive Contaminants and Sources
Products to avoid:
Spray cans containing chloro/fluorocarbons
Permanent wave solutions
Chlorinated waxes/cleaners
Chlorine-based swimming pool chemicals
Calcium chloride used for thawing
Sodium chloride used for water softening
Refrigerant leaks
Paint or varnish removers
Hydrochloric acid/muriatic acid
Cements and glues
Antistatic fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning solvents
found in household laundry rooms
Adhesives used to fasten building products and other
similar products
Areas likely to have contaminants
Dry cleaning/laundry areas and establishments
Swimming pools
Metal fabrication plants
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
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Plastic manufacturing plants
Furniture refinishing areas and establishments
New building construction
Remodeling areas
Garages with workshops
2 Maintenance schedule
User’s Information Manual
Service technician
(see the Cadet Installation & Service Manual)
General:
• Reported problems
• Inspect interior; clean and vacuum if
necessary
• Clean condensate trap
• Check for leaks (water, gas, flue,
condensate)
• Verify flue and air lines in good condition
and sealed tight
• Check system water pressure/system
piping/expansion tank
• Check control settings
• Check ignition and flame sense
electrodes (sand off any deposits; clean
and reposition)
• Wiring and connections
Owner maintenance
(see pages 6 - 8 for detailed instructions)
• Check boiler area
Daily
Monthly
• Check pressure/temperature
gauge
• Check vent piping
• Check air piping
• Check air and vent termination
screens
• Check relief valve
• Check condensate drain system
• Check air vents
ANNUAL START-UP
• Perform start-up checkout and performance
verification per Section 10 in the Cadet
Heating Boiler Installation and Service
Manual.
• Flame inspection (stable, uniform)
• Flame signal (at least 10 microamps at
high fire)
• Clean the heat exchanger if flue
temperature is more than 54°F above
return water temperature.
If combustion or performance
indicate need:
• Clean heat exchanger
• Remove the door and burner
assembly.
WARNING
Follow the maintenance procedures given throughout this manual. Failure to perform the service and
maintenance or follow the directions in this manual could result in damage to the boiler or system,
resulting in severe personal injury, death, or substantial property damage.
Periodically
Every
6 months
End
of season
months
• Test low water cutoff (if used)
• Reset button (low water cutoff)
• Check boiler piping (gas and
water) for leaks
• Operate relief valve
• Shut boiler down (unless boiler
used for domestic hot water)
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