Slant/Fin J-390 Guide

Printed in Canada 0808 Publication No. J-UIM
Part No. 83-5737
Residential • Gas fired • Hot Water Boilers
User’s Information Manual
Direct-Vent Sealed Combustion Condensing Boiler
Model J-390
FOR YOUR SAFETY:
• Before operating this boiler, READ this manual.
• DO NOT attempt to install, service or repair this boiler yourself. There are no user serviceable parts. Contact a
qualified service agency if your boiler needs repair or maintenance. Ask your gas supplier for a list of qualified
service agencies.
• A qualified service agency should inspect the venting system of this boiler on an annual basis.
__ DO NOT store or use gasoline or other flam-
mable vapors and liquids in the vicinity of this
or any other appliance.
__ WHAT TO DO IF YOU SMELL GAS
• DO NOT try to light any appliance.
• DO NOT touch any electrical switch
• DO NOT use any phone in your building.
• Immediately call your gas supplier from
a neighbor’s phone. Follow the gas suppli-
er’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.
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.
Your gas boiler must be installed and serviced by a qualified service agency or gas
supplier. The lack of proper service can result in a dangerous condition.
This manual must be left with owner, hung on or
adjacent to the boiler. Owner should retain manual for
future reference.

Jaguar Model J-390 2
WELCOME TO OUR VALUED CUSTOMER
You are now the owner of a Slant/Fin Jaguar gas-fired boiler,
another quality heating product designed and manufactured
by an industry leader, to provide your family with many years
of reliable comfort and trouble-free performance.
The care and maintenance of your new boiler is important to
prevent a hazardous condition which might result form lack
of proper servicing. Therefore, you should perform regular
“owner” inspections as described in this manual (and report
any concerns to a qualified service technician) as well as
have your boiler serviced by a qualified service technician at
least once a year, preferably before the beginning of each
heating season.
LIGHTING INSTRUCTIONS
Locate, read and then follow the procedures on the lighting
instructions label attached to the boiler. For reference, we
have reproduced those instructions in this manual.
DO NOT use this boiler if any part has
been underwater. Immediately call a
qualified service technician to inspect the
boiler and to replace any part of the control
system and any gas control which has
been underwater.
WARNING
Should overheating occur or the gas
supply fail to shut off, DO NOT turn off or
disconnect the electric supply to the
circulator pump. Instead, shut off the gas
supply at a location EXTERNAL to the
appliance.
WARNING
SLANT/FIN DOES NOT PERMIT THE USE
OF VENT DAMPERS ON JAGUAR
BOILERS. OTHER DAMPERS OR DEVICES
WITH SIMILAR PURPOSE ARE NOT
PERMITTED.
Keep the boiler area clean and free of all materials that can burn.
NEVER close or reduce openings that supply air for the boiler fire and for ventilation.
Figure 1. Location and identification of parts.
SPARK ELECTRODE
(IGNITER)
HEAT EXCHANGER
VENTURI
WINDOW
(SIGHT GLASS)
FLUE PIPE
FLUE SENSOR
GAS SUPPLY
VALVE
WATER SUPPLY
WATER RETURN
CONDENSATE
TRAP
WATER RETURN
SENSOR
WATER SUPPLY SENSOR AND
WATERHIGHLIMIT
CONDENSATE
TRAP
FRONT (INTERIOR) RIGHT SIDE (INTERIOR)
PRESSURE GAUGE
POWER SWITCH
TEMPERATURE DISPLAY
MODE DISPLAY
VENT
AIR INTAKE
PRESSURE
RELIEF VALVE

Jaguar Model J-390
3
INSPECTION
Your boiler and heating system will last an indefinitely long
time at full efficiency, if it is inspected regularly and is kept
in good repair and adjustment. You, the user, should make
regular inspections, and report any problems to your ser-
vice agency. At regular intervals, you should have that
agency inspect the system and make repair adjustments
as necessary. What you and the service agency should do
is listed below. Contact your gas supplier for a list of qual-
ified service and repair agencies.
USER INSPECTION
The user should make the following inspections at least
once each month during the heating season and once
just before cold weather starts. Jaguar J-390 boiler may
be installed and vented either as direct-vent boiler, which
all air for combustion is obtained directly from outside
through the air intake piping or as non-direct-vent boiler,
which all air for combustion is taken from inside the boiler
room. Typical direct-vent installations are shown on
Figures 2 and 3. Non-direct-vent installation is shown on
Figures 4, 5 and 6.
1. VENTING AND AIR INTAKE SYSTEM REGULAR
INSPECTION
Inspect the system regularly for condensation, corrosion,
sagging and/or physical damage. A qualified professional
should service the boiler annually and include such an
inspection at that time. The homeowner should look over
the system monthly for damage, water stains, any signs of
rust, other corrosions or separation of the vent and air
intake piping (if direct-vent).
Should an inspection turn up signs of condensation, corro-
sion, sagging or damage, the boiler should be shut down
immediately and the condition should be corrected by a
qualified professional.
If the boiler is vented horizontally through the wall, the out-
side termination, louvers and screen should be checked for
any debris blocking the opening and cleaned as required.
OUTSIDE
TERMINATION
PANEL
AIR INTAKE
LOUVERS
OUTSIDE WALL
4" DIA
AIR INTAKE
4" DIA
VENT PIPE
VENT
TERMINATION
Figure 2. Direct vent, sidewall venting illustration.
4" DIA
VENT PIPE
4" DIA AIR
INTAKE PIPE
AIR INTAKE VENT TERMINATION
Figure 3. Direct vent, venting and air intake
through a roof.
102mm (4") DIA.
AIR INTAKE
102mm (4")
DIA.
AIR INTAKE
102mm (4") DIA.
VENT PIPE
102mm
(4") DIA.
VENT
PIPE

Jaguar Model J-390 4
AIR INTAKE
(DO NOT BLOCK)
4" DIA
VENT PIPE
VENT
TERMINATION
OUTSIDE WALL
Figure 4. Non-direct vent, sidewall venting.
102mm (4") DIA.
VENT PIPE

Jaguar Model J-390
5
Figure 5. Non-direct vent, venting through the roof.
2"MIN
VENT TERMINATION
4" DIA VENT PIPE
AIR INTAKE
(DO NOT BLOCK)
Figure 6. Non-direct vent, utilizing an existing chimney as a chase.
VENT
TERMINATION
CHIMNEY
TOP PLATE
4" DIA VENT PIPE
4" DIA
VENT PIPE
AIR INTAKE
(DO NOT BLOCK)
UNUSED
CHIMNEY
102mm
(4") DIA.
VENT PIPE
102mm (4") DIA.
VENT PIPE
102mm
(4") DIA.
VENT
PIPE

Jaguar Model J-390 6
2. CONDENSATE REMOVAL SYSTEM
The Jaguar boilers are equipped with a built-in conden-
sation drain and trap. The trap must be filled with water.
DO NOT operate the boiler without filling the trap with
water to prevent flue gas discharge into space. Periodic
inspection should be made of this assembly for deterio-
ration of the tubing and to insure that the trap is not
plugged. If it is plugged or appears to have excessive
sediment in it, it should be removed from the drain
assembly, straightened out to clear the obstruction,
reformed, filled with water and reinstalled as before.
(See Figure 7).
Leave the top of the condensate drain tee open, to act
as a vacuum breaker. Do not allow any part of the
condensate removal system to be exposed to freezing
temperatures, or any other conditions that could cause
blockage.
If a neutralizing system is installed, the filter medium
will require periodic changing, to ensure it’s effective-
ness. Refer to the neutralizing unit’s manufacturers
instructions, if available, or change the medium on an
annual basis.
3. PIPING INSPECTION
Look at all water piping. There should be no leaks or
signs of leaks at any pipe joints or around the boiler.
4. SYSTEM WATER PRESSURE INSPECTION
The boiler water pressure is indicated on the pressure
gauge (See Figure 1 for location). The boiler water out-
let temperature is normally indicated on the tempera-
ture display (See Figure 1 for location and Figure 9 for
digits illustration). For most installations, it should
indicate about 83 to 103 kPa (12 to 15 psi) pressure
when temperature is about 21° to 38°C (70° to 100°F)
and from 103 to 172 kPa (15 psi to 25 psi) when tem-
perature is up to 91°C (195°F). FOR YOUR SYSTEM,
there is one correct pressure for each temperature.
ASK YOUR INSTALLER OR SERVICEPERSON TO
EXPLAIN AND SHOW YOU. Learn what normal pres-
sure to look for. If pressure increases from normal, the
relief valve will open to relieve the pressure. Call your
service organization if pressures are higher or lower
than normal, and if the relief valve spills water. Repair or
adjustment is needed.
5. UNUSUAL NOISE
Stand near the boiler and look and listen. As the burner
starts and shuts off, there should be no unusual noise.
6. BOILER ROOM AIR SUPPLY
Ample boiler room fresh air is required for combustion
(non-direct vent installation) and ventilation (direct-vent
installation).
Check air vents for continuous positive supply of air as
required. Air needs are greatest in cold weather if boiler
installation is non-direct vent method. Air vents must be
open and free of obstruction.
Warning: The flow of combustion and ventilating air to the
boiler should not be obstructed.
Warning: If you find any problem during your inspection, call
for service immediately.
Figure 7. Condensate disposal system
NEUTRALIZING UNIT (IF REQUIRED)
CONDENSATE PUMP (IF REQUIRED)
DRAIN INSIDE BUILDING
PLASTIC TUBING
DRAIN VACUUM BREAKER, LEAVE OPEN

Jaguar Model J-390
7
The combustion air supply must not be susceptible to
contaminants, which may cause corrosion or other
damage to the heat exchanger and components of the
boiler, causing failure of these parts or unsafe operation.
Below is a list of products which must be avoided from
being stored or entering the boiler room or air supply
area:
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.
ANNUAL SERVICE AND GENERAL MAINTENANCE
A trained and qualified service technician should
perform inspection and general maintenance listed in
Installation and Operating Instructions (Publication
No. J-40) before each heating season and at regular
intervals.
SAFETY AND OPERATING INSTRUCTIONS
Follow the lighting instructions in this manual. These
instructions are also attached to the boiler.
SAFETY INFORMATION
For Your Safety Read Before Operating
A. This appliance does not have a pilot. It is equipped
with an ignition device which automatically lights the
burner. Do not try to light the burner by hand.
B. BEFORE OPERATING smell all around the appliance
area for gas. Be sure to smell next to the floor because
some gas is heavier than air and will settle on the floor.
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 neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
C. Use only your hand to turn the gas supply shut off
valve. Never use tools. If the supply shut off will not
turn by hand, don’t try to repair it, call a qualified
service technician. Force or attempted repair may
result in a fire or explosion.
DDO NOT use this appliance if any part has been under
water. Immediately call a qualified service technician to
inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above.
2. Set the thermostat to lowest setting.
3. Turn off all electric power to the appliance.
4. This appliance is equipped with an ignition device which
automatically lights the burner. Do not try to light the burner
by hand.
5. Open the gas supply shut off valve, by turning the handle to
be parallel to the gas piping. (See Figure 8).
6. Wait five (5) minutes to clear out any gas, then smell for gas,
including near the floor. If you then smell gas, STOP! Follow
“B” in the safety information above on this page. If you don’t
smell gas, go to next step.
7. Turn on all electric power to the appliance.
8. Set thermostat to desired setting.
If the appliance will not operate, follow the instructions “To
Turn Off Gas to Appliance” and call your service technician
or gas supplier.
To Turn Off Gas to Appliance
1. Set thermostat to lowest setting.
2. Turn off all electric power to the appliance if service is to be
performed.
3. Close the gas supply shut off valve, by turning the handle to
be perpendicular to the gas piping.
(See Figure 8).
WARNING: If you do not follow these instructions exactly, a
fire or explosion may result causing property damage,
personal injury or loss of life.
GAS SUPPLY SHUTOFF VALVE
IN “OPEN” POSITION
GAS SUPPLY SHUTOFF VALVE
IN “CLOSED” POSITION
TURN 90˚
TO CLOSE
TURN 90˚
TO OPEN
Figure 8.

Jaguar Model J-390 8
Removing Jacket Front Panel
1. Turn black screws 1/4 turn to open position.
2. Remove front panel.
To replace the panel, reverse procedure.
INTEGRATED BOILER CONTROL
The integrated boiler control monitors the status of the
room thermostat, high limit switch, low water cutoff (if
installed), water inlet and outlet sensors, flue gas sensor
and flame sensor. It controls the operation of the circula-
tor, combustion blower, gas valve and spark ignitor. The
boiler control also determines the sequence of operation
and timing for pre and post purge periods, trial for ignition
and lock out.
The control display board provides information on boiler
operation on a mode and temperature display and can be
viewed, programmed and reset with specific push
buttons. Diagnostic information is also provided on the
display, to help determine the cause of boiler failure. (See
Figure 9).
BOILER CONTROL AND DISPLAY FEATURES
(See Figure 9)
A. BOILER OPERATION STATUS: “Mode Display”
shows status of boiler operation. (See Table 1).
B. VIEW AND CHANGING TEMPERATURES: Setting
boiler supply water temperature and water tank
temperatures (See Table 2).
Press “Select” button for viewing following different
modes on “Mode Display”
1. While “c” is blinking, boiler supply water tem-
perature for space heating may be set to desired
temperature. The setting range is between 32° to
85°C (90° to 185°F).
2. While “d” is blinking, boiler supply water tempera-
ture for DHW may be set to desired temperature.
The setting range is between 40° to 85°C (104° to
185°F).
3. While “t” is blinking, DHW tank temperature may
be set to desired temperature (if tank is equipped
with sensor). The setting range is between 40° to
85°C (104° to 185°F).
4. View actual following temperatures on
“Temperature Display”, Press “Select” button for
selection:
a. Supply water temperature – Select #1 on
“Mode Display”.
b. Return water temperature – Select #2 on
“Mode Display”.
c. Domestic hot water tank temperature (if tank
equipped with sensor) – Select #3 on “Mode
Display”.
d. Flue gas temperature – Select #4 on “Mode
Display”.
e. Outside temperature (if outside sensor is used)
– Select #5 on “Mode Display”.
C. Display Board Pushbuttons:
1. Reset - Used to clear a Lockout Error
(indicated with an “A” in the “Mode Display”)
2. Select - Used to scroll through the modes in the
“View and Changing Temperatures” and “Viewing
and Changing System Setting” menus.
3. Enter - Used to store values that are changed in
the “View and Changing Temperatures” and
“Viewing and Changing System Setting” menus.
4. Up - Used to increase values in the “View and
Changing Temperatures” and “Viewing and
Changing System Setting” menus.
5. Down - Used to decrease values in the “View and
Changing Temperatures” and “Viewing and
Changing System Setting” menus.
"TEMPERATURE" DISPLAY (3 DIGITS)
"UP" PUSH BUTTON
"DOWN" PUSH BUTTON
"ENTER" PUSH BUTTON
"SELECT" PUSH BUTTON
"BURNER STATUS"
STEADY DOT = BURNER ON
BLINKING DOT = BURNER OFF
"MODE" DISPLAY
"RESET"
PUSH BUTTON
Figure 9. Display Board

Jaguar Model J-390
9
Mode
Display Description & Temperature Display
Boiler is on stand-by mode.
Temperature display shows supply water Temp.
Space heating mode.
Temperature display shows supply water Temp.
Domestic hot water mode.
Temperature display shows supply waterTemp.
Frost protection mode.**
Temperature display shows supply water Temp.
Lockout (Alarm) condition.
Temperature Display indicates the lockout code
Reset button must be pressed to resume normal operation.
Error Condition. *
Temperature display indicates the error code.
Warning Condition. ***
Temperature display indicates the error code.
Jaguar Boiler Display Board
“Boiler Operation Status”
Note:
Blinking dot on “Mode Display” indicates active heating control, burner off. Steady dot
indicates burner is on.
*: Error must be corrected to resume boiler operation. Pressing the “Reset” button is not
required.
**: The boiler circulator is energized, when boiler water temperature drops below 10° C
(50°F.
***: Error must be corrected to resume DHW operation. Space heating not affected.
Pressing the “Reset” button is not required.
Table 1

Jaguar Model J-390 10
Mode
Display Description & Temperature Display
Space heating supply water temperature could be changed by
pressing “Up/Down” button. Settable from 32° to 85°C (90°F to
185°F) (steps of 0.55°C [1°F]). The default valve is 80°C (176°F)
Press “Enter” button to store. (see note 1)
Domestic hot water supply temperature could be changed by
pressing “Up/Down” button. Settable from 40° to 85°C (104°F to
185°F) (steps of 0.55°C [1°F]). The default valve is 80°C (176°F)
Press “Enter” button to store. (see note 2)
Domestic hot water tank temperature could be changed by
pressing “Up/Down” button. Settable from 40° to 71°C (104°F to
160°F (steps of 0.55°C [1°F]). The default valve is 60°C (140°F).
Press “Enter” button to store. (see note 3)
Temperature display shows actual
supply water temperature.
Temperature display shows actual
return water temperature.
Temperature display shows actual DHW tank temperature.
(if the water tank is equipped with sensor)
Temperature display shows actual flue gas temperature.
Temperature display shows actual outside temperature.
(boilers with outdoor sensor)
Table 2: Viewing and Changing Temperatures
Press “Select” button for viewing different modes on “Mode Display”
Notes:
1. For space heating mode “0” (boilers not utilizing outdoor sensor)
2. For DHW mode “2” (storage tank with Aquastat)
3. For DHW mode “1” (storage tank with sensor)
Table 2
Blinking
Blinking
Blinking

Jaguar Model J-390
11
DIAGNOSTIC ERROR CODES
WARNING:
If an operational problem has occurred, the boiler will
shut off and show an “A”, “E” or “H” in the mode dis-
play, along with an error code in the temperature dis-
play.
Do not attempt performing any service under these
conditions, but do note the mode and temperature dis-
play indication, in case the problem clears itself. An “A”
indication error can be cleared by pressing the reset
button once, which will allow re-try of operation. Do not
repeatedly press the reset button in this case, or if an
“E” or “H” indication error is displayed. Call a trained,
experienced service technician to troubleshoot and cor-
rect the problem. The Jaguar Installation and Operating
Instructions, publication J-40 contain a full trou-
bleshooting section for this. Turn off all electric power
ot the boiler before service.
A. LOCKOUT ERRORS:
Indicated by an “A” in the mode display. The reset
button must be pressed to clear the error and retry
operation. The temperature display shows the error
code.
B. BLOCKING ERRORS:
Indicated by an “E” in the mode display. Operation
is automatically restored, once the condition returns
to normal or is fixed. The temperature display
shows the error code. Pressing the “Reset” button
is not required.
C. WARNING ERRORS:
Indicated by an “H” in the mode display. Operation
of the space heating mode is not affected, and the
warning is displayed intermittently. Operation of the
DHW mode is automatically restored, once the
condition is fixed. The temperature display shows
the error code. Pressing the “Reset” button is
not required.
ERROR
CODE INDICATION
01 Ignition Failure - 3 unsuccessful ignition
attempts in a row
02 Flame Failure - 3 losses of flame signal
during one demand
03 Water High Limit Open
04, 05, 09,
10, 12, 13,
14, 15, 16,
18, 32
Control Failure
19, 20 Flame Detected at Wrong Time
33 Fan Failure - RPM Error
ERROR
CODE INDICATION
01 Water Outlet Sensor Open
02 Water Inlet Sensor Open
03 Flue Gas Sensor Open
11 Water Outlet Sensor Shorted
12 Water Inlet Sensor Shorted
13 Flue Gas Sensor Shorted
19, 42,
45, 46,
47, 48
Control Failure
20 Flame Detected at Wrong Time
21 Polarity Error
22 Frequency Error
24 Earth Connection Faulty
30 Excess Flue Temperature
31 Low Water Cutoff Error
32 Excess Water Inlet Temperature
51 Reset Button Error
52 Boiler Model Selection Error
ERROR
CODE INDICATION
04 Domestic Hot Water Tank Sensor Open
14 Domestic Hot Water Tank Sensor Shorted

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