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This appliance is equipped with a Blocked-Flue shutoff device. If any 
part of the flue-gas passageway in the combustion chamber, exhaust 
pipe or rain cap should become blocked or adversely restricted, a 
pressure sensing switch (Fig.24 pg.10) will break the electrical control 
circuit and not allow the burner to run. There is a “Manual Reset”    
button on this switch that will have to be reset before re-firing can 
occur. If the burner fails to start after resetting once, call a qualified 
service technician to clean the flue passageways and/or replace the 
switch. Cleaning instructions can be found in Section (6.1 G) of the 
Maintenance section of this manual. 

Owner’s Manual  —  FireBird HD308 

Central Hydronic Heater

Installation, Operation & Service Instructions

Read and Save These Instructions

4201 Lien Rd. • Madison, WI 53704

1

www.UsePhoenix.com • [email protected]

Toll-Free 1-800-533-7533

Specifications subject to change without notice.

TS-643    06/11

Designed and built for the rigors of the restoration industry, the Phoenix FireBird HD308 is the safest, most efficient, flexible, 
and durable heat system made. The FireBird HD308 uses superior design to maximize heating capacity and minimize your 
fuel cost, while its innovative safety features and system flexibility create revenue opportunities unavailable to competing 
units.

The Phoenix FireBird HD308

•  308,000 BTU Capacity
•  Atmospherically-Vented
•  Stainless Steel and Aluminum Construction
•  Diesel Powered
•  Heavy Duty 1 HP Glycol Pump
•  120 Gallon Fuel Tank Capacity

Phoenix FireBird HD308
PN 4031010

Summary of Contents for 4031010

Page 1: ...ireBird HD308 Central Hydronic Heater Installation Operation Service Instructions Read and Save These Instructions 4201 Lien Rd Madison WI 53704 1 www UsePhoenix com sales UsePhoenix com Toll Free 1 800 533 7533 Specifications subject to change without notice TS 643 06 11 Designed and built for the rigors of the restoration industry the Phoenix FireBird HD308 is the safest most efficient flexible ...

Page 2: ...tdown 16 6 Maintenance 16 6 1 Service Instructions Checks 16 6 2 Maintenance Frequency Chart 20 7 Troubleshooting 20 7 1 Fault Determination 20 7 2 Burner Internal Faults 22 7 3 Electrical Schematics 23 Warranty 26 Serial No __________________________________ Purchase Date ______________________________ Dealer s Name ______________________________ Page 1 Specifications Part No 4031010 Fuel Input 3...

Page 3: ...for concrete curing will not harm the chamber For security and environmental protection all valves controls burner pump filters HTF tank filler and fuel tank filler are either secured behind lockable access doors or are self lockable An electric Pre heater ensures continued clean lighting and combustion of diesel light oil even in the coldest of climatic conditions Temperature gauges pressure gaug...

Page 4: ...llimeters 72 1829 Width of Cabinet inches millimeters 22 559 Width of Fuel Tank inches millimeters 31 787 Height of Cabinet inches millimeters 48 1219 Height of Top of Rain Cap inches millimeters 58 1473 Heat Transfer Fluid Capacity US gallons liters 20 76 Fuel Tank Capacity US gallons liters 116 439 Weight without Fuel Tank pounds kilograms 600 272 Weight with Fuel Tank Empty pounds kilograms 800...

Page 5: ...he following scenarios is proven 1 120 volt control power is present clear lens 2 HTF level is adequate in reservoir green lens 3 Flow switch has proven adequate flow of HTF in the system green lens 4 High limit control has not interrupted the circuit green lens 5 High pressure switch has not interrupted the circuit green lens 6 Aquastat is calling for heat green lens Burner Specifications Operati...

Page 6: ...ils of these components Main power male inlet plug twist lock Fig 7 Low water cut off switch mounted on HTF reservoir Fig 21 Flow switch mounted in HTF plumbing circuit Fig 22 High limit switch mounted in HTF plumbing circuit Fig 23 High pressure switch Fig 24 Diesel fuel pre heater Fig 5 HTF circulating pump Fig 6 see pump chart above for details Burner Fig 3 see burner chart above for details 3 ...

Page 7: ...ting Quick couplers ensure that the connections are fully engaged and snapped into place or flow will not take place through the coupler connection For longer term building heating projects it is advised to insulate all hose sections located outdoors between the FireBird HD308 and the exterior building wall Special insulating wraps are available for this purpose Mounted Remotely on Plumbing Circui...

Page 8: ...ace all fancoils in the desired locations and route all the hoses to them OR lay out all hose grid circuits for ground thaw or concrete curing Connect hoses from the manifold to ONE fancoil ONLY Open 2 HTF circuit valves Fig 33 Turn ON the circulating pump switch Fig 12 and let the fluid circulate until all the air is eliminated from the first branch circuit Air has been purged when steady pressur...

Page 9: ... The high pressure switch light will turn on This indicates that the blocked flue high pressure safety switch has not broken the circuit A few seconds later the stat light will come on and the burner fan will purge the combustion chamber for a few seconds The burner should light following the pre purge If air is still present in the fuel lines the burner may not light and lock out It might be nece...

Page 10: ... operating mode turn OFF the burner circuit power switch remove the tape cover from the burner s primary control box re insert the control and turn ON the burner circuit power switch C Examine the flue gas exhaust pipe and rain cap to be sure they are solidly attached and free from any type of obstruction Clean if necessary a This check should be performed every time when putting the system into o...

Page 11: ...ct surfaces are now exposed and can be easily cleaned with vacuum cleaner brushes or other cleaning utensils i To re assemble the unit replace components in reverse order to which they were removed j Reconnect fuel and power supply to the unit and when re starting the system perform all safety and service checks as outlined above H The FireBird HD308 will produce condensate while operating at any ...

Page 12: ...r switch Check the following a Is main power switch Fig 11 still turned on b Are the circuit breakers Fig 16 still turned on c Verify external power supply 120V to inlet plug Fig 7 1 Unit Power Light is ON indicates A Power is present through main switch The 2 digital temperature gauges should be ON If not use a multi meter to check the following a The 2 transformers Fig 18 should show 120VAC in a...

Page 13: ...luid temperature has not reached the high temperature limit setpoint and power is going through the switch B There is no power going through the NC contacts of the high pressure switch Fig 24 Blockage may have occurred in the flue gas passage way a Check the chimney pipe and rain cap for blockage b Check the air tube connection to the pressure switch and clean if necessary c Clean the flue gas pas...

Page 14: ...the fuel lines c The fuel filter is dirty Replace filter d Nozzle is plugged Replace nozzle e The spark is irregular or not present Re align electrodes C The burner does not start when the thermostat calls for heat a Loose wire connection at terminals L or N b Terminals on the control module are bent or loose c The motor is defective d The capacitor is defective e The control box is defective 7 3 ...

Page 15: ...15 www UsePhoenix com sales UsePhoenix com Toll Free 1 800 533 7533 ...

Page 16: ...16 www UsePhoenix com sales UsePhoenix com Toll Free 1 800 533 7533 Burner Wiring Line Voltage Sub base Wiring ...

Page 17: ...ump Pressure Gauge 4030305 7 Fuel Pressure Gauge 4030304 8 Burner Nozzle 4030551 9 Burner Assembly 4030272 10 Igniter 4030302 5 Options and Accessories 4029790 Phoenix TX 80 Fan Coil 4030700 Manifold Kit 2 ea 4030153 3 4 x 50 Hose 4030417 3 4 x 25 Hose 4030418 3 4 x 15 Hose 4030154 1 x 50 Hose 4029876 Ductable Filter Box Kit 4021799 16 x 16 x 2 Merv 8 Filter 4028363 16 x 25 Heavy Duty Flex Duct 40...

Page 18: ... or installation accident acts of nature or any other cause beyond Therma Stor LLC reasonable control Limitations and Exclusions If any Phoenix FireBird HD308 part is repaired or replaced the new part shall be warranted for only the remainder of the original warranty period applicable thereto but all warranty periods will be extended by the period of time if any that the Phoenix FireBird HD308 Des...

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