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Direct Vent Addendum
For use in conjunction with B-10,
or SG atmospheric venting manuals
QHT DVF
Please Read Instructions Carefully
Save for Future Reference
If the information in this manual is not followed exactly, a fire explosion
may result causing property damage, personal injury or loss of life.
DO NOT store or use gasoline or other flammable vapors or liquids in the vicinity of this
or any other appliance.
WHAT TO DO IF YOU SMELL GAS VAPORS
·
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 neighbors phone.
·
If you can not reach your gas supplier call the fire department
Installation and service must be performed by a qualified installer, service agency or the
gas supplier.
PORTSMOUTH, NH 03801
WARNING
DANGER
QHT, INC
3560 LAFAYETTE RD
PHONE: 603-334-6400
FAX: 603-334-6401
REV. 12112019
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Related Manuals for QHT DVF
Summary of Contents for QHT DVF
- Page 1 Direct Vent Addendum For use in conjunction with B-10, or SG atmospheric venting manuals QHT DVF Please Read Instructions Carefully Save for Future Reference WARNING If the information in this manual is not followed exactly, a fire explosion may result causing property damage, personal injury or loss of life.
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Page 3: Table Of Contents
TABLE OF CONTENTS QHT INC. DIRECT VENT PACKAGE Section Page Important Info & Warnings General Information & Installation Explosions Vent System Installation External Clearances for Oil External Clearances for Gas Clearances to Combustibles DVF-4 System Installation of Make-up Air Burner Setup Installations... - Page 4 F. CAN/CGA B149 The above codes are available from: CANADIAN STANDARDS ASSOCIATION STANDARDS DIVISION National Fire Protection Association (NFPA) 5060 Spectrum Way, Suite 100 Battery March Park Mississauga, Ontario, L4W 5N6 Quincy, Massachusetts, 02269 http://www.nfpa.org PAGE 4 DVF INSTALL MANUAL...
- Page 5 • These boilers may only be direct vented using approved venting systems supplied through QHT INC. For the boiler warranty, please consult the B-10 or SG atmospheric venting manual. Do not burn volatile garbage, gasoline, naphtha or other flammable liquids •...
- Page 6 Your home should also be adequately ventilated, particularly if you have insulated your home. ONLY QUALIFIED, LICENSED SERVICE CONTRACTORS SHOULD PERFORM WORK ON YOUR B-10 OR SG BOILER. PAGE 6 DVF INSTALL MANUAL...
- Page 7 1. General Information The QHT Direct Vent components have been designed and packaged so that the Biasi B-10 and SG 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.
- Page 8 DVF Vent System DESCRIPTION PART # DESCRIPTION PART # 4” x 18” pipe extension 4” Tee with VRV D-VRV-4 D-4PVP-18A 4” X 8’ Aluminum Flex 4” Concentric Vent Hood D-4”ALUFLEX D-400300 Duct 1½ x 1 ½ x 1/2 Bull- 6” x 4” boiler adapter...
- Page 9 NOTE: USE ONLY LISTED COMPONENTS SUPPLIED WITH THE BOILER. SURFACE DISCOLORATION OF THE BUILDING MAY OCCUR DUE TO IMPROPER BOILER/BURNER ADJUSTMENT. QHT WILL NOT ACCEPT RESPONSIBILITY OR LIABILITY FOR SUCH DISCOLORATION. The Exhaust Hood must be installed on the leeward side of house and conform to the following guidelines: 1.
- Page 10 NOTE: USE ONLY LISTED COMPONENTS SUPPLIED WITH THE BOILER. SURFACE DISCOLORATION OF THE BUILDING MAY OCCUR DUE TO IMPROPER BOILER/BURNER ADJUSTMENT. QHT WILL NOT ACCEPT RESPONSIBILITY OR LIABILITY FOR SUCH DISCOLORATION. The Exhaust Hood must be installed on the leeward side of house and conform to the following guidelines: 1.
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Page 11: Clearances To Combustibles
Horizontal Vertical QHT DVF 1” (25 mm) 1” (25 mm) Note: Clearances are based on an installation of QHT DVF vent system. Routing of vent pipe can be planned after the termination location is determined. DVF INSTALL MANUAL PAGE 11... - Page 12 2.3 Exhaust Pipe System The DVF System must be installed where 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 vent hood through listed exhaust pipes provided. The exhaust pipe throughout it's entire length must be readily accessible for inspection, cleaning and replacement.
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Page 13: Installation Of Make-Up Air
NOTICE Do not operate the burner with air intake disconnected. For DVF kits: 4. Use 4 inch diameter flex pipe that is provided in the kit or a comparable single wall metal pipe. The maximum allowable length of intake pipe is twenty feet not including elbows. - Page 14 ) or 5% to 3.5% of (O ) for natural gas, or 10.0% to 11.0% of (CO ) or 5% to 3.5% of (O ) for LP gas. CO readings should always be less than 100 ppm. PAGE 14 DVF INSTALL MANUAL...
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Page 15: Oil Burner Setup
1.00 X 60 Spray Pattern Pump Pressure 155 psi 150 psi 150 psi 150 psi Turbulator .60/.65 .85/1.00 .85/1.00 Air Gate 1.00 1.20 * - These burners are not approved for use in Canada on Biasi equipment DVF INSTALL MANUAL PAGE 15... -
Page 16: Sg Oil Burner Setup
.85 X 60 1.10 X 80 Nozzle solid solid solid Spray Pattern 145 psi 145 psi 145 psi Pump Pressure Turbulator Air Gate * - These burners are not approved for use in Canada on Biasi equipment PAGE 16 DVF INSTALL MANUAL... -
Page 17: Gas Burner Setup
/hr = [3600/(sec. Per rev.)]*(Size of gas meter) The chart to the right can be used to determine the flow rate depending upon the time per revolution and the size of the gas meter dial. DVF INSTALL MANUAL PAGE 17... -
Page 18: Wiring
POST PURGE and HIGH LIMIT CONTROL 1-1/2x1-1/2x1/2 tee Operating Aquastat Post Purge Immersion Limit, Mounted in supplied TAPPING The post purge immersion limit must be mounted in the 1 x 1/2” tee supplied with 2” DVH Trim Kit. PAGE 18 DVF INSTALL MANUAL... - Page 19 Immersion Limit Room Thermostat Endswitch GENISYS CONTROL grnd neutral limit line 7248/ Hydrostat/ Aquasmart Immersion Limit Note 2: All wiring must be done in accordance with applicable state, local and national codes. Use only copper conductors. DVF INSTALL MANUAL PAGE 19...
- Page 20 Endswitch Carlin 60200FR Red/ grnd neutral limit white 7248/ Hydrostat/ Aquasmart ON/OFF Immersion Limit SWITCH Note 2: All wiring must be done in accordance with applicable state, local and national codes. Use only copper conductors. PAGE 20 DVF INSTALL MANUAL...
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Page 21: System Start Up
14) Once it is determined that the system is operating properly, proceed to tuning up the burner using the proper instruments. If you do not have any instruments, do not place this unit in operation until you have a competent burner technician tune up the burner. DVF INSTALL MANUAL PAGE 21... -
Page 22: Installation Inspection
VRV. If a flow reversal is noticed, house depressurization is occurring and make up air is required. Once installation is complete, check the boiler with instruments to ensure that it is working properly. PAGE 22 DVF INSTALL MANUAL... -
Page 23: Service And Maintenance
(Failure to replace damaged insulation can result in a fire hazard and can cause personal injury or death, and can cause substantial property damage.) 11) Return the boiler to normal operation and check all controls before leaving the job. DVF INSTALL MANUAL PAGE 23... - Page 24 REV. 12112019...
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