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99-0419 Rev.00 

Valiant-FT® Series II  

Installation and Service Manual 

Gas Fired Commercial Condensing Stainless Steel Boilers 

Hydronic Heating Models VA400 thru VA850 

 

 

 

  

 

 
 
 
 
 

WARNING 

If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury 
or death.

 

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 neighbour’s phone. Follow the gas supplier’s instructions, 

 

If you cannot reach your gas supplier, call the fire department. 

A Qualified installer, service agency or the gas supplier must perform installation and service. 

WARNING 

Do not store or use gasoline or other flammable vapours and liquids in the vicinity of this or any other appliance. 

TO THE INSTALLER:

 After installation, these instructions must be given to the end user or left on or near the appliance. 

TO THE END USER:

 This booklet contains important information about this appliance. Retain for future reference. 

 

Summary of Contents for Valiant-FT II Series

Page 1: ...hone in your building Immediately call your gas supplier from a neighbour s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department A Qualified inst...

Page 2: ...99 0419 Rev 00...

Page 3: ...TION 10 2 4 1 Freeze Protection 10 2 4 2 Connecting to the Valiant FT 11 2 4 3 Low Water Cut off LWCO 11 2 4 4 High Limit 11 2 4 5 Minimum Pipe Size Requirements 11 2 4 6 Flow and pressure drop at a g...

Page 4: ...rol Timing and Rates 30 6 1 5 Sensor Configuration 30 6 2 Lead Lag Setup 31 6 3 SAFETY AND SYSTEM FUNCTIONS 31 6 3 1 On board Physical Lockout Reset 31 6 3 2 Flame Detection 31 PART 7 ERROR TABLE 32 P...

Page 5: ...design which offers several venting options Heat output is controlled by the venturi and zero governor gas valve which work together to provide seamless modulation It is designed for use with a fully...

Page 6: ...ible for water damage in connection with this unit or any of its components Do not locate this appliance in an area where it will be subject to freezing unless precautions are taken Due to low jacket...

Page 7: ...to the outdoors Figure 4 Combustion Air and Exhaust gasses both vertically vented to the outdoors Figure 5 Indoors Combustion Air and horizontally exhausted to the outdoors Figure 6 Combustion Air an...

Page 8: ...e and fittings with thermal insulation shall be prohibited The horizontal venting run should be sloping upwards not less than in ft 21 mm m from the boiler to the vent terminal The venting system shou...

Page 9: ...7 DO NOT terminate closer than 4 feet 1 25m horizontally and vertically from any electric meter gas meter regulator relief valve or other equipment In all cases local codes take precedence 8 Perform r...

Page 10: ...ws can range from 3 to 5 feet in equivalent length depending on the centerline radius Figure 13 Horizontal Vent Exhaust and Air Intake Configurations and Clearance 4 Vent outlet shall terminate at lea...

Page 11: ...l is unobstructed CAUTION DO NOT OPERATE APPLIANCE WITH THE TERMINAL CAP REMOVED AS THIS MAY RESULT IN THE RECIRCULATION OF FLUE PRODUCTS WATER MAY ALSO FLOW INTO THE COMBUSTION AIR PIPE AND INTO THE...

Page 12: ...ombustion air inlet to any other appliance 12 15 cm for appliances 100 000 Btuh 30kW 36 91cm for appliances 100 000 Btuh 30kW 9 23 cm for appliances 50 000 Btuh 15kW 12 30cm for appliances 50 000 Btuh...

Page 13: ...and CSA B149 2 15 Installation Codes 2 3 GAS CONNECTION Verify that the appliance is supplied with the type of gas specified on the rating plate Consult factory for installations at high altitude 2 3...

Page 14: ...part of the appliance WARNING DO NOT support the weight of the gas piping on the boiler Failure to comply could result in severe damage personal injury or death 2 4 WATER CONNECTION This appliance is...

Page 15: ...sor This limits maximum discharge water temperature A manual reset high limit needs to be reset on the touchscreen or the rest button on the control board which must be pushed whenever water temperatu...

Page 16: ...wiring between the appliance and field installed devices shall be made with wire having minimum 220 F 105 C rating Line voltage wire external to the appliance must be enclosed in approved conduit or a...

Page 17: ...l be shown on the display 3 2 2 High Gas Pressure High gas pressure switches may be ordered to comply with CSD 1 code These will either be integrated into the gas train If gas pressure downstream of t...

Page 18: ...VDC must be fed back to the module Oxide deposit on the sensor rod must be removed with steel wool Do not use sand paper since this will contaminate the surface PART 4 OPERATION START UP 4 1 SEQUENCE...

Page 19: ...nergized at the end of the ignition period to allow for ionization detection HEAT TRANSFER PROCESS 1 Burner input rate continues to increase until water temperature reaches the set point temperature 2...

Page 20: ...REMOTE and re enabling any external demand if required 4 3 NATURAL GAS COMBUSTION VALUES The appliance combustion values for Natural Gas should be as below Table 11 Valiant FT Natural Gas Combustion...

Page 21: ...r US The input ratings of the appliance operating at elevations above 2000ft shall be reduced at the rate of 4 for each 1000ft above sea level For Canada The de rated input rating above 2000ft is as s...

Page 22: ...interface also provides visual graphs illustrating the various temperature points over a certain period of time This interface allows for overall appliance monitoring including all sensors cycle coun...

Page 23: ...ints The operator interface inside the boiler allows for changes to additional boiler parameters for ease of startup and serviceability PART 6 CONTROL SETTINGS Parameter Description Demand Central Hea...

Page 24: ...set Operation Standalone Description Electrical Connection s Programming Instructions Boiler operates with variable setpoint determined by outdoor reset curve Modulates on outlet sensor default Heat d...

Page 25: ...rature WWSD 9 Select Minimum outdoor temperature Outdoor Design 10 Select Low Water Temperature Min Water Temp 11 Select Outdoor boost maximum off point Design Max 12 Press Show Line to confirm reset...

Page 26: ...A water temperature 7 Select 20mA water temperature 8 Place toggle switch to REMOTE for remote operation if required 4 20mA 0 10Vdc Firing Rate Operation Standalone Description Electrical Connection s...

Page 27: ...Water Configuration 4 Select Demand Switch Modulation sensor only 5 Select Modulation sensor Inlet Sensor Proceed to Step 17 DHW Sensor Stat operation 6 Press Sensor Configuration 7 Select S6S7 J9 1 3...

Page 28: ...d 3 Select System Identification Access 4 Verify MB1 Modbus address 1 5 Verify MB2 Modbus address 1 6 Select Lead Lag Master Configuration 7 Select Master Enabled Enabled Fixed Setpoint operation 8 En...

Page 29: ...lect Pump Configuration 8 Press Advanced Options 9 Press the to arrive at Central Heat Pump or DHW Pump 10 On Options Local burner demand 11 On Options Local Lead Lag Service Active 12 Force On Outlet...

Page 30: ...will proceed into a Lockout 2 condition 6 Press Verify Begin Yes 7 Press the reset button on the ignition control within the alotted time Master Boiler 8 Press and 9 Press Lead Lag Master Configuratio...

Page 31: ...ler will be brought online and will also fire up to the base load rate specified Modulation of boilers will only occur after all boilers in the Lead Lag system are firing up to the specified base load...

Page 32: ...ote Operator closes to initiate call for heat 3 Prepurge Honeywell SOLA checks that all boiler safeties are closed before ignition attempt 4 Lead boiler fires up to base load rate Default 80 for a per...

Page 33: ...ctronic isolation valve remains open 5 Select 6 Uncheck CH Demand 7 Uncheck CH Service Active 8 Uncheck Local Lead Lag Service Active 9 Aux pump X is set Figure 35 Configure Menu 6 1 1 System Identifi...

Page 34: ...en activated DHW pump cycles Displays the number of cycles the DHW pump has been activated 6 1 4 Burner Control Timing and Rates Figure 36 Burner Control Timing and Rates Menu Group Selection Sub Menu...

Page 35: ...2 minutes Base Load Rate When a call for heat is initiated the lead boiler runs up to the desired base load rate default 80 and continues to operate in this fashion based on the above 4 scenarios If t...

Page 36: ...minate the lockout error 1 Press the red bar as circled above 2 Press the Lockouts button 3 Press Clear Lockout Table 15 Alert Codes Description 29 Burner switch turned OFF 30 Burner switch turned ON...

Page 37: ...stated First Aid Eye Irrigate immediately Breathing Fresh air 8 2 CLEANING BOILER HEAT EXCHANGER 1 Shut down boiler a Turn the main power off to the boiler b Shut off gas supply at the main manual val...

Page 38: ...he mounting screws CHECK IGNITER GROUND WIRING 1 Inspect boiler ground wire from the heat exchanger flange to ground on boiler Check boiler ground wire continuity 2 Verify that all wiring is in good c...

Page 39: ...ed directly to the Valiant FT COMBUSTIBLE MATERIALS CAUTION Keep appliance clear from combustible materials do not store GASOLINE and other flammable vapors and liquids in the proximity of the applian...

Page 40: ...36 PART 9 PIPING DIAGRAMS Figure 40 Single Boiler Hydronic Heating Zoned Piping...

Page 41: ...37 Figure 41 Multiple Boiler Hydronic Heating Zoned Piping...

Page 42: ...38 Figure 42 Single Boiler with DHW Tank Hydronic Heating Zoned Piping...

Page 43: ...39 PART 10 PARTS LIST...

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Page 55: ...x 651 00117 000 x 9 A Purge Valve 957 05311 000 x 10 A Sight Glass Holder 285 03645 000 x 11 A Sight Glass Mirror 789 02428 000 x 12 A High Modulation Venturi 813 00006 055 x 813 00006 050 x 813 0000...

Page 56: ...1838 006 x 35 C Solenoid Gas Valve 235 00821 000 x x x 235 00723 000 x 833 25180 000 x 36 C High Trim Flange 285 00414 000 x x x 37 C Flange to 1 NPT 285 00413 000 38 C High Gas Switch 817 00068 000 x...

Page 57: ...erminal Strip Block 2 x 2 832 18287 000 x 70 D Terminal Strip Block 8 x 2 832 18290 000 x 71 D ProtoNode FPC N34 Optional 833 25160 000 x 72 D SOLA Modulating Hydronic Control System 833 25167 000 x 7...

Page 58: ...000 x 103 E Barbed Drain Reducer 221 00474 000 x 104 E Air Differential Switch 817 11046 000 x 105 E Low Air Switch 817 11073 000 x 106 E Plastic Strike 037 00607 000 x 107 F Metal Latch 037 00606 000...

Page 59: ...All 850 725 600 500 400 129 Venturi Propane 048 00655 000 x x x 813 00004 344 x x 130 UV Sensor 817 00654 x 131 UV Sensor Holder Block 001 01957 000 x 132 1 2 NPT Sight Pipe 857 05100 000 x 133 Honey...

Page 60: ...56 PART 11 TUBING DIAGRAM...

Page 61: ...57 PART 12 WIRING DIAGRAM...

Page 62: ...58...

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Page 64: ...ing boilers as well as a supplier of specialty HVAC products Our service line is open 24 hours 7 days a week The CAMUS CERTIFIED seal assures you that Reliability Efficiency Serviceability are built i...

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