![background image](http://html1.mh-extra.com/html/qht/direct-vent-dvf-4-rigid/direct-vent-dvf-4-rigid_installation-manual_3146666001.webp)
WARNING
If the information in this manual is not followed exactly, a fire
or explosion may result causing property damage, personal
injury or loss of life.
Danger
WHAT TO DO IF YOU SMELL GAS:
• 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
• Installation and service must be performed by a qualified
licensed installer, service agency or the gas supplier.
Distributed By:
QHT, INC.
3560 LAFAYETTE ROAD
BLDG. 2, UNIT A
PORTSMOUTH, NH 03801
PHONE: 603-334-6400
FAX: 603-334-6401
REV. 07/19/2022
DIRECT VENT ADDENDUM
FOR THE FOLLOWING:
BIASI B10 SERIES BOILERS
SAINT ROCH UNIVERSAL BOILERS
Installation Manual For The Following Kits:
DVF-4 Rigid Kit for Bio, #2 Fuel Oil and Gas
DVO Flexible Kit for Bio, #2 Fuel Oil