TriangleTube PSRKIT44 User manual

RESTIGE Solo 399
HX Field Replacement Kit
1
The following items are shipped in a PARTS BOX and
must be installed as part of the HX replacement:
- Vent outlet gasket
- Blower gasket
- Gas pipe Gasket
- Combustion chamber insulation
- Burner mounting plate gasket
- Burner mounting plate nuts
- Temperature sensor o-ring gaskets
Recommended tools:
A. Pipe wrenches
B. Phillips and flat head screw drivers
C. 10 mm socket and/or 10 mm wrench
D. Adjustable wrench
E. eedle nose pliers
F. Calibrated combustion analyzer
Indicates a potentially hazardous situation
which, if ignored, can result in serious injury
or substantial property damage.
Indicates special instructions on installation,
operation or maintenance, which are impor-
tant to equipment but not related to personal
injury hazards.
NOTICE
WARNING
For your safety, turn off electrical power sup-
ply at service panel and allow unit to cool
before proceeding to avoid possible electrical
shock and scald hazard. Failure to do so can
cause severe personal injury or death.
Use a two wrench method when tightening piping
onto the boiler piping connections. Use one
wrench to prevent the boiler piping from turning /
twisting. Failure to support the boiler piping and
connections in this manner could cause damage to
the boiler and its components.
Failure to follow instructions below can result
in severe personal injury or damage if ignored.
• Instructions are for a qualified installer/
service technician only.
• Read all instructions before proceeding.
• Follow instructions in proper order.
WARNING
WARNING
WARNING
Quan i y Ki Par
Number
Descrip ion Model
PS 399 & PT 399 (30 PSI)
Both Condensate Pans
PT 399 HP (80 PSI)
1 PSRKIT44 Heat Exchanger Assembly
1 PTRKIT128 Heat Exchanger Assembly

reliminary Instructions
1. Verify that the heat exchanger kit is correct for
the model of boiler. See table on page 1.
2. Turn off power to the unit at the main service
panel and allow the unit to cool.
ELECTRICAL SHOCK HAZARD!
Ensure power to the boiler has been switched off
prior to servicing the unit.
3. Remove the front jacket panel of the boiler by
removing the thumbscrew located on the upper
edge of the unit. Lift the panel up and pull for-
ward to remove the front panel from the unit.
4. Using a voltmeter verify there is no electrical
power to the boiler by checking for power on
the boiler’s power supply terminals L and
5. Shut off gas supply to the inlet of the unit at the
external main manual shutoff valve.
6. Close external system isolation valves to the
boiler supply and return piping and on the sys-
tem make up / fill piping.
7. Attach a hose to external boiler drain. Place
other end of this hose to a suitable drain.
8. Open external boiler drain valve and begin
draining the boiler.
To assist in the draining of the boiler, remove the
air vent at the top of the unit or manually lift
open the pressure relief valve.
Removal of Venting Connection
1. Use a flat head screw driver to loosen the banding
clamp located on the vent outlet adapter. (Fig. 2).
2. Remove vent piping from vent outlet adapter as
the internal flue tube / vent outlet adapter must be
removed.
3. Disconnect the yellow wire leads from the flue
temperature sensor (shown as Item 1 in Fig. 1).
Use care when disconnecting the wire leads as
not to damage the sensor terminals or the wire
leads.
Before disconnecting any wire connections mark
and label all connections and location of the con-
nections.
NOTICE
WARNING
NOTICE
RESTIGE Solo 399
HX Field Replacement Kit
2
2
6
3
1
54
Fig. 1: restige Solo 399

Stainless Steel Vent Outlet Adapter Removal
1. Dismount the vent outlet adapter from top of boil-
er cabinet by removing the 4 mounting screws.
Do not discard the mounting screws and vent out-
let adapter as they will be reused. (Fig. 2)
2. Remove entire vent outlet adapter by lifting ver-
tically upward and out of the boiler cabinet
using a twisting / rocking motion (Fig. 3).
3. In case of insufficient space above the boiler,
remove combustion air inlet piping and boiler
relief valve / air vent assembly from the top of
the boiler. Remove all screws securing the top
jacket panel from the side panels and remove
vent outlet adapter and top jacket panel togeth-
er from the boiler cabinet. Put all items in a safe
place as they will all be reused.
4. Once the vent outlet adapter is removed from the
boiler, it should be inspected for deformation
damage or corrosion.
If there are any signs of deformation, damage or
corrosion on the vent outlet adapter, replace it
immediately. Check condition of flue sensor
mounting, replace vent outlet adapter if necessary.
Failure to comply could result in flue gas leakage
resulting in severe personal injury or death.
olypropylene Vent Outlet Adapter Removal
1. Dismount the vent outlet adapter from top of boil-
er cabinet by twisting the vent outlet adapter
counter clockwise to disengage the retaining tabs.
Remove the vent outlet adapter by lifting verti-
cally to disengage it from the internal vent pipe.
2. Remove the internal vent pipe from the unit by
lifting vertically upward and out of the boiler
cabinet using a twisting / rocking motion.
Removal of Electrical Connections (MCBA)
Before disconnecting any wire connections mark and
label all connections and location of the connections.
1. Remove top access panel located above the heat
exchanger on the top jacket panel.
2. Remove ignition cable and green ground wire
from the igniter. (Shown as item 6 in Fig. 1).
WARNING
NOTICE
RESTIGE Solo 399
HX Field Replacement Kit
3
Vent Outlet
Adapter
Test
Port
Banding
Clamp
Mounting
Screws
(4) Each
Vent Outlet
Adapter Gasket
Fig. 2: Vent Outlet Adapter Mounting
Vent/Heat
Exchanger
Gasket
Heat Exchanger
Adapter
Vent Outlet
Adapter
Fig. 3: Removal of Vent Outlet Adapter

RESTIGE Solo 399
HX Field Replacement Kit
4
3. Disconnect the ignition cable from the MCBA
control module and remove air intake pipe from
venturi. (Shown as item 2 in Fig 1). Place the
intake pipe and ignition cable aside, DO OT
discard as they will be re-used.
4. Disconnect the electrical connections for the
blower at the blower housing.
5. Disconnect the wire leads from the gas valve.
6. Disconnect the grey flat ribbon cable from the
display board at the MCBA control module.
7. Disconnect the orange low voltage and high volt-
age wiring terminal strips by unplugging the bot-
tom strips from the upper portion.
8. Remove the retaining screw for control mount-
ing panel and swing open the control mounting
panel. The high voltage and low voltage termi-
nals should pass through the lower cutouts of
the panel to allow movement of the panel.
9. Disconnect the red wire leads from supply tem-
perature sensor (Shown as item 3 in Fig. 1)
located in the boiler supply pipe. Use care when
disconnecting the wire leads as not to damage
the sensor or the wire leads.
10. Disconnect the blue wire leads from return tem-
perature sensor (Shown as item 4 in Fig. 1)
located in the boiler return pipe. Use care when
disconnecting the wire leads as not to damage
the sensor or the wire leads.
11. Disconnect the orange wire leads from the Low
Water Cut-Off (LWCO) pressure switch
(Shown as item 5 in Fig. 1). Use care when dis-
connecting the wire leads as not to damage the
LWCO or the wire leads.
Removal of Electrical Connections (TriMax)
Before disconnecting any wire connections mark and
label all connections and locations of the connections.
1. Remove top access panel located above the heat
exchanger on the top jacket panel.
2. Slide left and right tabs of control panel inward
and lower control panel.
3. Pull the retaining tabs on top of the rear cover to
remove the rear control box cover.
4. Remove green ground wire from the igniter
(shown as item 6 in Fig. 1) and the ignition cable
from the TriMax control module.
5. Remove air intake pipe (Shown as item 2 in Fig.
1) from venturi. Place the intake pipe aside, DO
OT discard as it will be re-used.
6. Disconnect the electrical connections for the
blower at the blower housing.
7. Disconnect the wire leads from the gas valve.
8. Disconnect the red wire leads from supply tem-
perature sensor (Shown as item 3 in Fig. 1)
located in the boiler supply pipe. Use care when
disconnecting the wire leads as not to damage
the sensor or the wire leads.
9. Disconnect the blue wire leads from return tem-
perature sensor (Shown as item 4 in Fig. 1)
located in the boiler return pipe. Use care when
disconnecting the wire leads as not to damage
the sensor or the wire leads.
10. Disconnect the orange wire leads from the Low
Water Cut-Off (LWCO) pressure switch
(Shown as item 5 in Fig. 1). Use care when dis-
connecting the wire leads as not to damage the
LWCO or the wire leads.
NOTICE

RESTIGE Solo 399
HX Field Replacement Kit
5
Removal of Gas Connection
1. Disconnect the gas supply piping inside the
boiler at the union located just below the gas
valve using two wrenches.
2. The gas piping can remain inside the boiler or
be removed for additional clearance / access.
Removal of Blower/Gas Valve/Venturi Assembly
1. Remove 4 blower mounting nuts from the burn-
er plate using a 10 mm wrench and remove the
blower/gas valve/venturi. Gas valve and ven-
turi assembly can remain connected to the
blower housing. Discard old blower gasket.
(Fig. 4).
Removal of Burner Mounting late
1. Remove the 6 burner mounting plate nuts secur-
ing the burner mounting plate to the heat
exchanger using a 10 mm socket or wrench.
2. Remove the burner mounting plate by lifting
straight up until the burner clears the combus-
tion chamber insulation. Discard burner mount-
ing plate gasket and combustion chamber insu-
lation. See WAR I G on page 13.
3. Inspect the burner head, igniter, and sight glass
assembly for deterioration or damage. Replace
if necessary.
Removal of Condensate Trap
1. Remove condensate trap and cabinet gasket
from the boiler. Do not discard, as they will be
reused. Cut serrated washer on polypropylene
condensate pan to remove retaining nut.
Removal of Temperature Sensors
1. Remove the supply and return temperature sen-
sors from the boiler piping. Do not discard the
sensors as they will be reused.
Removal of Heat Exchanger
1. Remove the retaining screws from the upper
mounting brackets located behind the heat
exchanger using a Phillips head screw driver.
These screws are used to avoid vertical motion
of the heat exchanger during transport and are
not required to be installed with the replacement
heat exchanger.
Obtain assistance in lifting the heat exchanger
from the cabinet as 2 people will be required.
2. Lift the heat exchanger about 4” to 6” to disen-
gage from the rear jacket panel and clear the
condensate tube from the bottom panel. Tilt
heat exchanger forward from the top and care-
fully rotate it forward in order to remove from
the boiler cabinet.
reparation of New Heat Exchanger
Do not damage or throw away shipping box,
foam packs, and HX Tracking Form as all these
items are used to return the old heat exchanger,
if required for warranty evaluation.
NOTICE
NOTICE
Gas Valve
Venturi
Blower
Fig. 4: Blower/Venturi/Gas Valve Assembly

RESTIGE Solo 399
HX Field Replacement Kit
6
1. Carefully open and unpack the PARTS BOX
from its shipping carton.
2 . Carefully remove heat exchanger from shipping
box. Do not discard packing materials, as the
shipping box should be reused to return the old
heat exchanger back to Triangle Tube if
required for warranty consideration.
3. Check new heat exchanger for any damage.
Check position of the flue gasket in the new heat
exchanger.
4. Install temperature sensors with new O-ring gas-
kets in return and supply sensing locations.
Installation of New Heat Exchanger
rior to installation of the new heat exchanger,
carefully check the interior of the boiler cabinet.
Dry the cabinet / insulation when signs of mois-
ture are present. Check integrity of all wiring.
Repair / replace when necessary.
1. Lift new heat exchanger into place by engaging
the rear HX brackets (top and bottom) into the
rear boiler jacket panel provisions.
Installation of Burner Mounting late
1. Use the included alignment tool to install the
new combustion chamber insulation in the heat
exchanger.
- Insert the alignment tool into the igniter
opening as shown in Fig. 5.
- Install the new combustion chamber insula-
tion in the heat exchanger so that the align-
ment tool goes over the correct heat
exchanger stud as shown in Fig. 6.
- Remove the alignment tool.
2. Place the new burner mounting plate gasket
onto the heat exchanger, aligning the cutouts of
the gasket with the heat exchanger mounting
studs.
3. Place the burner plate on top of the heat
exchanger. Use care not to damage the com-
bustion chamber insulation. Align the burner
plate and combustion chamber insulation on the
heat exchanger so that the ignitor and sight
glass are positioned in the front / left corner of
the heat exchanger.
4. Check combustion chamber insulation alignment
with the burner mounting plate. The combustion
chamber insulation igniter cutout should align
NOTICE
P399
MK2.75
Fig. 5: Alignmen Tool Ins alla ion
Fig.6: Combus ion Chamber Insula ion Ins alla ion

RESTIGE Solo 399
HX Field Replacement Kit
7
with the opening in the burner mounting plate. If
not properly aligned, remove the burner mount-
ing plate and reposition combustion chamber
insulation.
Misalignment of combustion chamber insulation
can cause unreliable boiler operation.
5. Hand tighten the new burner mounting plate
nuts to hold the burner plate in place. Once all
mounting nuts are in place, use a wrench to
tighten using an alternating pattern until the
gasket is slightly compressed. See Table 2, page
13 for torque specifications.
Installation of Blower/Gas Valve/Venturi Assembly
1. Mount the blower/gas valve/venturi assembly
on top of the heat exchanger. Use the new
blower gasket provided in the kit. Install 4
blower mounting nuts ensuring they are proper-
ly tightened and the blower is mounted secure-
ly to the burner plate. See Table 2, page 13 for
torque specifications.
Installation of Condensate Trap
1. Install cabinet gasket where heat exchanger
condensate drain nipple penetrates the cabinet.
2. Install the condensate drain assembly as shown
in Fig. 7.
3. A new metal washer must be installed when
installing the condensate drain assembly onto a
polypropylene condensate pan. Insert the metal
washer into the retaining nut and screw onto the
condensate drain assembly without rubber gas-
kets. Use the condensate drain assembly as a
tool to press the retaining nut with metal wash-
er onto the polypropylene condensate pan.
Unscrew the condensate drain assembly and
proceed to the next step.
Ensure the installation of the condensate drain
assembly included the metal washer when
attaching to a polypropylene condensate pan.
Failure to comply could result in the trap assem-
bly dislocating from the boiler.
4. Slide the retaining nut, and rubber seals from the
condensate drain assembly over the heat exchang-
er condensate drain nipple. Connect the condensate
drain assembly to the retaining nut and tighten.
Ensure the condensate drain assembly contains
the plastic seated ball. Do not install the conden-
sate drain assembly if the ball is lost or missing,
replace the entire assembly.
WARNING
NOTICE
WARNING
Flexible Tubing
(or 3/4 PVC/
CPVC Piping
to Drain)
Compression
Nut with
Rubber Seal
Fill Plug
with Vaccum
Break Port
Condensate
Drain Assembly
Plastic Ball
(Not shown)
Retaining Nut
Place the Metal
Washer and (2)
Rubber Gaskets
in this Order for
Proper Seal.
Fig. 7: Condensa e Drain Assembly

RESTIGE Solo 399
HX Field Replacement Kit
8
Installation of Gas Connection
1. Install the gas piping inside the unit if it was
removed for additional clearance/access.
2. Remove gasket from the end of the gas pipe
where it connects to the gas valve and install new
gas pipe gasket provided in the kit.
3. Connect gas piping to the gas valve at the union
located just below the gas valve. Tighten the
union using two wrenches. See Table 2 for torque
specifications.
Installation of Stainless Steel Vent Outlet
Adapter
1. Ensure flue gasket is seated properly in the heat
exchanger adapter. Apply clean water to the bot-
tom of the vent outlet adapter and flue gasket.
(Fig. 8).
2. Insert vent outlet adapter through the top jacket
panel into the heat exchanger adapter. (Fig. 8).
Use a slight twist motion with a downward force
as it is inserted into the adapter. Ensure the gas-
ket remains seated in the heat exchanger adapter.
3. In case of limited top boiler clearance, insert vent
outlet adapter through the removed top jacket
panel. Bring this entire assembly in place together
on top of the boiler side panels. Use a slight twist
motion with a downward force as the vent outlet
adapter is inserted into the heat exchanger adapter.
Ensure the gasket remains seated in the heat
exchanger adapter. Secure the entire top jacket
panel to the side panels with the original screws.
4. Install new vent outlet gasket provided in the kit
in vent outlet adapter. Ensure the combustion test
port of the vent outlet adapter is facing toward the
front of the boiler. Re-use the existing 4 mount-
ing screws and secure vent outlet adapter to top of
boiler jacket panel. (Fig. 9).
If during the install of the flue tube into the heat
exchanger the flue gasket becomes dislodged, it
is extremely important that the install is halted
and the gasket is reseated in the adapter. Failure
to comply could result in leakage of flue prod-
ucts into the surrounding area resulting in death
or personal injury.
Installation of olypropylene Vent Outlet
Adapter
1. Ensure flue gasket is seated properly in the heat
exchanger adapter. Apply clean water to the bot-
tom of the internal vent pipe. (Fig. 8)
WARNING
Ensure Adapter
is Clean of All
Debris
Gasket
Fig. 9: Vent Outlet Adapter Gasket
Moisten
Gasket Prior
to Insertion of
Flue Tube
Vent
Outlet
Adapter
Ensure
Adapter is
Clean of All
Debris
Heat Exchanger
Adapter
Fig. 8: Heat Exchanger/Flue Tube Gasket

RESTIGE Solo 399
HX Field Replacement Kit
9
2. Insert the internal vent pipe into the heat
exchanger adapter. Use a slight twist motion
with a downward force as it is inserted into the
adapter. Ensure the gasket remains seated in the
heat exchanger adapter.
3. Ensure flue gasket is seated properly in the top of
the internal vent pipe. Apply clean water to the
bottom of the vent outlet adapter.
4. Install the vent outlet adapter on top of boiler
cabinet by twisting the vent outlet adapter clock-
wise to engage the retaining tabs. Ensure the flue
gasket remains seated in the internal vent pipe.
5. Install new vent outlet gasket provided in the kit
in vent outlet adapter. Ensure the combustion
test port of the vent outlet adapter is facing
toward the front of the boiler. (Fig. 9)
If during the install of the internal vent pipe or
vent outlet adapter the flue gasket becomes dis-
lodged, it is extremely important that the install
is halted and the gasket is reseated. Failure to
comply could result in leakage of flue products
into the surrounding area resulting in death or
personal injury.
Installation of Electrical Connections (MCBA)
1. Connect the orange wire leads to the Low Water
Cut-Off (LWCO) pressure switch.
2. Connect the blue wire leads to the return tem-
perature sensor.
3. Connect the red wire leads to the supply tem-
perature sensor.
4. Connect the yellow wire leads to the flue tem-
perature sensor.
5. Connect the blue and brown wire leads to the
gas valve as shown in Fig. 10.
6. Connect the electrical connections for the blow-
er to the blower housing.
7. Connect the green ground wire to the igniter
ground terminal.
8. Pass the orange low voltage and high voltage
wiring terminal strips through the lower cutouts
of the control mounting panel. Close the control
mounting panel and secure with the retaining
screw. Connect the orange low and high voltage
wiring terminal strips to the upper portion.
9. Connect the gray ribbon cable from the display
board to the MCBA control module.
WARNING
3
5
2
1
4
Fig. 10: Gas Valve Wiring & Combustion
Adjustment
1. Brown (MCBA)/ Black (TriMax) wire
2. Blue (MCBA)/ White (TriMax) wire
3. Throttle screw
4. Offset Pressure Cover Screw
5. Inlet Pressure Tap

RESTIGE Solo 399
HX Field Replacement Kit
10
10. Connect the ignition cable to the igniter and the
MCBA control module.
11. Install the air intake pipe back on the venturi air
inlet connection. Make sure the ignition cable is
secured with a cable tie to the air intake pipe. Also
make sure the ignition cable is not in contact with
any metal surfaces or routed over the sight glass.
12. Install top access panel located above the heat
exchanger on the top jacket panel.
Installation of Electrical Connections (TriMax)
1. Connect the orange wire leads to the Low Water
Cut-Off (LWCO) pressure switch.
2. Connect the blue wire leads to the return tem-
perature sensor.
3. Connect the red wire leads to the supply tem-
perature sensor.
4. Connect the yellow wire leads to the flue tem-
perature sensor.
5. Connect the black and white wire leads to the
gas valve as shown in Fig. 10.
6. Connect the electrical connections for the blow-
er to the blower housing.
7. Connect the green ground wire to the igniter
ground terminal.
8. Connect ignition cable to the TriMax control
module and install rear control box cover.
9. Install the air intake pipe back on the venturi air
inlet connection. Make sure the ignition cable
is secured with a cable tie to the air intake pipe.
Also make sure the ignition cable is not in con-
tact with any metal surfaces or routed over the
sight glass.
10. Flip control panel up until retaining tabs lock
into place.
11. Install top access panel located above the heat
exchanger on the top jacket panel.
Installation of Vent Connection
1. Ensure vent outlet gasket is seated properly in
the vent outlet adapter.
2. Apply clean water to the insertion end of the
pipe to ease insertion into the adapter.
3. Insert vent pipe into the adapter until it is fully
seated.
Do not apply excessive force, twist or bend the
adapter or vent pipe when inserting. The vent
outlet gasket could be damaged resulting in pos-
sible flue gas leakage.
4. Secure the vent pipe by tightening the vent out-
let adapter banding strap. Do not over tighten
the strap. The seal is made with the gasket
inside the adapter.
Start-Up rocedures
1. Ensure the pressure relief valve / air vent is
properly piped to the supply piping at the top of
the boiler.
2. Fill boiler with water and purge all air from the
system. Set boiler pressure between 12 and 15
psi. Test for water leaks. Repair any leaks.
3. Turn on gas supply to the inlet of the unit at the
external main manual shutoff valve to the unit.
4. Check and test all gas connections for leaks.
Repair leaks if found.
WARNING

RESTIGE Solo 399
HX Field Replacement Kit
11
Do not check for gas leaks with an open flame.
Use a bubble test. Failure to check for gas leaks
can cause severe personal injury, death or sub-
stantial property damage.
5. Turn on power to the unit. The unit is now
ready to be placed back in service.
Combustion Test and Adjustments
1. The installer MUST perform a complete combus-
tion check to ensure the following combustion lev-
els are met at high and low input firing rates and
the burner is operating at optimum conditions.
Table 1: Recommended Combustion Settings
The combustion testing and adjustments must
be performed by a qualified installer, service
agency or the gas supplier. All combustion mea-
surements must be performed with calibrated
equipment to ensure proper readings and accu-
racy.
Failure to perform a complete combustion test at
both high and low input rates may result in
incomplete combustion and the production of car-
bon monoxide, which can cause severe personal
injury, death or substantial property damage.
MCBA Instructions
1. Manually place the boiler into high fire mode
by pressing the “MODE” button with “+” but-
ton simultaneously on the control panel display
while in the Standby (STBY) mode.
The control panel will display a H followed by
the current boiler temperature when placed into
high fire test mode.
2. If the combustion levels during high fire is out-
side the recommended combustion settings
adjust the THROTTLE SCREW (see Fig. 10)
using a flat-blade screwdriver as follows:
Counter-clockwise adjustment of the
THROTTLE SCREW at High Fire:
O2 decreases and CO2 increases
Clockwise adjustment of the THROTTLE
SCREW at High Fire:
O2 increases and CO2 decreases
3. Once the combustion level is set at high fire,
manually place the boiler into low fire mode by
pressing the “MODE” button with “-” button
simultaneously on the control display while in
the Standby (STBY) mode.
The control panel will display a L followed by
the current boiler temperature when placed into
low fire test mode.
4. If the CO2combustion level during low fire is
not within +/- 0.2 of the combustion level mea-
sured at high fire, adjust the OFFSET SCREW
(see Fig 10) as follows:
Counter-clockwise adjustment of the OFFSET
SCREW at Low Fire:
O2 increases and CO2 decreases
NOTICE
WARNING
WARNING
WARNING
NOTICE
Natural Gas Propane
O2 Min. 2.30% 3.70%
O2 Max. 5.30% 5.20%
CO2 Min. 8.80% 10.00%
CO2 Max. 10.50% 11.00%
CO Max. 100 ppm 100 ppm

RESTIGE Solo 399
HX Field Replacement Kit
12
Clockwise adjustment of the OFFSET SCREW
at Low Fire:
O2 decreases and CO2 increases
TriMax Control rocedure
1. Press the round I STALLER button. See Fig. 11.
2. Enter the installer access code “054” by using the
LEFT and RIGHT buttons to select a digit and the
U and DOWN buttons to change the digit. Press
the OK button to enter the access code.
3. Press the RIGHT button to highlight the
Manual Operation icon then press the OK
button.
4. Press the OK button while the FA icon is high-
lighted to manually fire the burner and power
the CH circulator.
An adequate CH load must be present to dis-
sipate the heat generated during the combus-
tion test. If an adequate CH load is not avail-
able, an indirect water heater can be used to
dissipate the heat by creating a DHW call
which will enable the DHW circulator.
5. Press the RIGHT button to adjust the firing rate
to 100% (high fire). Hold down the RIGHT
button to rapidly increase the firing rate.
6. If the combustion levels during high fire are out-
side the recommended combustion settings
adjust the THROTTLE SCREW (see Fig. 10)
using a flat-blade screwdriver as follows:
Counter-clockwise adjustment of the THROT-
TLE SCREW at High Fire (100% firing rate):
O2decreases and C02increases
Clockwise adjustment of the THROTTLE
SCREW at High Fire (100% firing rate):
O2increases and CO2decreases
7. Once the combustion level is set at high fire,
manually place the boiler into low fire mode by
pressing the LEFT button to adjust firing rate
down to 1% (low fire).
8. If the CO2combustion level during low fire is
not within +/-0.2 of the combustion level mea-
sured at high fire, adjust the OFFSET SCREW
(see Fig. 10) as follows:
Counter-clockwise adjustment of OFFSET
SCREW at Low Fire (1% firing rate):
O2increases and CO2decreases
Clockwise adjustment of OFFSET SCREW at
Low Fire (1% firing rate):
O2decreases and CO2increases
9. Press the OK button while the fan icon is high-
lighted to shutdown the burner.
10. Press the DOWN button to highlight the home
screen icon then press OK to return to the
home screen.
NOTICE
Installer
Button
Fig. 11: Trimax Navigation Buttons
Manual Operation
Released
O
O
O
CH
CH1
FAN
DHW
SYS
CH2

RESTIGE Solo 399
HX Field Replacement Kit
13
Table 2: Torque Specifications
Assembly Screws
Torque Specifications
Min.
Inch- Pounds
Max.
Inch- Pounds
Sight Glass 1113
Burner Head 27 31
Igniter 27 31
Gas Valve Couplings 27 31
Blower - Outlet 27 31
Venturi to Gas Valve 31 35
Venturi to Blower 31 35
Burner Plate 44 59
The combustion chamber insulation
contains ceramic fibers, which are clas-
sified as a possible human carcinogen.
When exposed to extremely high tem-
peratures, the ceramic fibers, which
contain crystalline silica, can be con-
verted into cristobalite.
Avoid Breathing and Contact with Skin
and Eyes
When removing or repairing the combustion
chamber insulation follow these precaution
measures:
1. Use a IOSH approved respirator which
meets OSHA requirements for cristobalite
dust, similar to 95. Contact IOSH at
1-800-356-4676 or on the web at
www.cdc.gov/niosh for latest recommen-
dations.
2. Wear long sleeved, loose fitting clothing,
gloves and eyes protection.
3. Assure adequate ventilation.
4. Wash with soap and water after contact.
5. Wash potentially contaminated clothes
separately from other laundry and rinse
washing machine thoroughly.
6. Discard used insulation in an air tight
plastic bag.
NIOSH Stated First Aid:
Eye/Skin: Immediately irrigate
Breathing: Clean fresh air
WARNING
Handling reviously Fired Combustion Chamber Insulation
2011-15 Prestige 399 HX . Kit
Revised date: 02/18/15