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1. General Information

HOMEOWNER INFORMATION FOR GAS

TO START UP THE APPLIANCE

1.  STOP! Read the safety information on the side of the boiler.  DO NOT START THE BOILER UNLESS 

ALL CLEANOUT DOORS ARE SECURED AND SEALED.  (Skip to step 9 for oil burning boilers)

2.  Set thermostat to lowest setting

3.  Turn off all electric power to the appliance

4.  Do not attempt to light the burner by hand

5.  Turn the manual shut off on the combination gas valve clockwise to 

the off position.

6.  Wait five minutes to clear out any gas. Then smell for gas, including 

near the floor.

 

If you smell gas, STOP!  

•  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 can not reach your gas supplier call the fire department
7. 

If you don’t smell gas, go to the next step.

8. 

Return the manual valve on the combination gas valve to the on position by reversing 

step “5”.

9. 

Turn on all electric power to the appliance.

10. 

Set thermostat to the desired setting.

11. 

If the burner fails to light you may press the reset button once.  If the appliance will not 

operate, follow the instructions “To Turn Off Gas To Appliance” and call your service technician 

or gas supplier.  DO NOT ATTEMPT TO START THE BURNER WHEN EXCESS GAS HAS ACCUMULATED, 

WHEN THE UNIT IS FULL OF VAPOR, OR WHEN THE COMBUSTION CHAMBER IS VERY HOT.

NOTE: 

ALWAYS KEEP THE MANUAL FUEL SUPPLY VALVE SHUT OFF IF THE BURNER IS SHUT DOWN FOR 

AN EXTENDED PERIOD OF TIME.

TO TURN OFF GAS  APPLIANCE

 

Set the thermostat to the lowest setting.

Turn off electric power to the appliance if service is to be performed.

Turn the gas control valve to the off position.

The QHT Direct Vent components have been designed and packaged so that the Biasi 

B-10 boilers, Saint Roch UNIVERSAL boilers can be directly vented to the outside.  Properly 

maintained, these boiler systems are unsurpassed in efficiency and will provide years of 

trouble-free operation.   

 

In addition to the standard Biasi or Saint Roch boiler package,  the Direct Vent Package 

is supplied with a kit containing the standard make-up air and appropriate exhaust system 

piping and hoods for your application.  The last piece of the complete package is a direct vent 

specific burner. 

 

The Direct Vent Systems are a non-powered positive pressure vent hood system for  gas 

or oil fired appliances that provides an outlet for exhaust gases and an intake for combustion 

air.  The hood is designed to direct the hot exhaust gases away from the structure without the 

aid of a motorized fan. All of the internal parts in contact with the flue gases are made from 

corrosion resistant stainless steel. 

Summary of Contents for Direct Vent DVF-4 Rigid

Page 1: ...low the gas supplier s instructions If you can not reach your gas supplier call the fire department Installation and service must be performed by a qualified licensed installer service agency or the g...

Page 2: ...nt Kit Gas or Oil DVF 4 Rigid Vent Kit and Installation 4 9 DVF 4 Installation of Make Up Air 4 1 10 DVF 4 Installation of Exhaust Termination 4 2 10 DVF 4 Joint Assembly 3 3 8 DVF 4 Appliance Connect...

Page 3: ...l fire hazards Please read the literature and warranties supplied by the manufacturers of the various accessory equipment This equipment is warranted by the respective manufacturers not by Quincy Hydr...

Page 4: ...with those of influenza and the highest incidence of poisoning occurs at the onset of cold weather or during flu season A victim may not experience any symptoms only one symptom or a few symptoms Susp...

Page 5: ...ce technician or gas supplier DO NOT ATTEMPT TO START THE BURNER WHEN EXCESS GAS HAS ACCUMULATED WHEN THE UNIT IS FULL OF VAPOR OR WHEN THE COMBUSTION CHAMBER IS VERY HOT NOTE ALWAYS KEEP THE MANUAL F...

Page 6: ...Vent hood shall be installed 12 above ground level or 12 above nominal snow level of the region of the installation which ever is higher 2 The Vent hood shall not be less than 3 feet above any forced...

Page 7: ...3 DVO Flexible Vent Kit and Installation Vent Installation 1 Vent Pipe bend radius is 12 minimum 2 Support vent pipe with metal strapping every 36 3 Maximum wall thickness is 14 Call Z Flex for recom...

Page 8: ...From outside the building insert the outer section through the wall until it rests against the wall Position the outer section so that the air intake is on the bottom Secure to outer wall using four...

Page 9: ...und the flue collar and slide on adaptor and tighten gear clamp 4 Seal the seam on the adaptor 5 Slide the terminal inner section over the terminal outer section and secure by tightening the gear clam...

Page 10: ...on to the outer sleeve to complete the joint assembly 3 3 DVO Joint Assembly APPLIANCE CONNECTION 1 Connect the appliance adapter to the appliance collas as per joint assembly 2 Apply Sealant around...

Page 11: ...e provisions do not exist for the ducting of combustion products to the outside The direct vent connector shall not pass through any floor or ceiling The burner exhaust must be ducted directly to the...

Page 12: ...s been determined cut a 8 hole for a non combustible wall or a 9 hole for a combustible wall Using 2 X 2 Frame a box around the hole on the outside of the house so the flange is mounted away from the...

Page 13: ...electrically bonded to ground in accordance with the requirements of the authority having jurisdiction or in the absence of such requirements with the National Electrical Code ANSI NFPA 70 or Canadian...

Page 14: ...hould be set to 12 5 CO2 To ensure proper burner setup gauges should be used to check things such as the pump pressure CO2 levels CO levels etc Gas 1 Checking the electrode orifice size and flame rod...

Page 15: ...er Model EZ Select EZ Select EZ Select EZ Select Firing Rate 50 78 1 06 1 33 Insertion Depth 3 0 3 0 3 0 3 0 Nozzle 40x45 65X70 85X60 1 00X60 Spray Pattern A A A B Pump Pressure 155 psi 150 psi 150 ps...

Page 16: ...am and controls To determine how much gas is coming into the burner or to set the gas meter correctly the following formula can be used The chart to the right can be used to determine the flow rate de...

Page 17: ...r the tee before the combination gas valve When installing the boiler make sure a pipe compound resistant to the action of liquefied petroleum is used Check piping for leaks Always check leaks with a...

Page 18: ...16 8 Wiring Oil Burners NOTE All wiring must be done in accordance with applicable state local and national codes Use only copper conductors...

Page 19: ...17 9 Wiring Gas Burners NOTE All wiring must be done in accordance with applicable state local and national codes Use only copper conductors...

Page 20: ...n 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 thermostat...

Page 21: ...er of any debris with brush and vacuum 4 Remove smoke pipe and clean out debris from cleaning or soot build up 5 Inspect smoke pipe for any corrosion before reinstalling Replace if necessary 6 Consult...

Page 22: ...mp Room Temp Ambient Net Stack Temp CO2 O2 Smoke Reading Combustion EFF System Checklist Boiler Model Serial Original Purchaser Installer Burner Checklist Burner Manufacturer Burner Fuel Type Burner M...

Page 23: ...21 13 Installer Notes Continued Comments Notes...

Page 24: ...HVAC products sold to wholesale distributors in the U S and Canada Customer service and support are the key to QHT s business From troubleshooting radiator piping to working through problems with wal...

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