Gas Pressures; Gas Connection - Quadra-Fire Direct Vent Gas Appliance COLBAY-FS-B Installation And Operation Manual

B. Gas Pressures
Proper input pressures required for optimum appliance per-
formance, gas line sizing requirements need to be followed
from NFPA54.
WARNING
Fire Risk.
Explosion Hazard.
High pressure will damage valve.
• Disconnect gas supply piping BEFORE
pressure testing gas line at test pressures
above 1/2 psig.
• Close the manual shutoff valve BEFORE
pressure testing gas line at test pressures
equal to or less than 1/2 psig.
WARNING
Verify inlet pressures.
• H i g h p r e s s u r e m a y c a u s e o v e r f i r e
condition.
• Low pressure may cause explosion.
Install regulator upstream of valve if line pressure
is greater than 1/2 psig.
Pressure requirements for appliance are shown in the table
below.
PRESSURE
Minimum Inlet Pressure
Maximum Inlet Pressure
Manifold Pressure on "HI"
If the pressure is not suffi cient, ensure:
1) the piping used is large enough.
2) the supply regulator is adequately adjusted.
3) that the total gas load for the residence does not exceed
the amount supplied.
The supply regulator (the regulator that attaches directly to the
residence inlet or to the propane tank) should supply gas at
the suggested input pressure listed above. Contact the local
gas supplier if the regulator is at an improper pressure.
Page 24
NG LP
4.5 inches w.c. 11.0 inches w.c.
7.0 inches w.c. 14.0 inches w.c.
3.5 inches w.c. 10.0 inches w.c.
Quadra-Fire • Columbia Bay • 250-5195 Rev. K
C. Gas Connection
NOTE: Have the gas supply line installed in accordance with
local building codes, if any. If not, follow ANSI Z223.1. Instal-
lation should be done by a qualifi ed installer approved and/or
licensed as required by the locality. (In the Commonwealth of
Massachusetts, installation must be performed by a licensed
plumber or gas fi tter.)
NOTE: A listed (and Commonwealth of Massachusetts
approved) 1/2 inch (13mm) T-handle manual shut-off valve and
fl exible gas connector are connected to the 1/2 inch (13mm)
control valve inlet.
• If substituting for these components, please consult local
codes for compliance.
WARNING
Gas Leak Risk.
• Support control when attaching pipe to
prevent bending gas line.
NOTE: The gap between the supply piping and gas access
hole may be plugged with non-combustible insulation to prevent
cold air infi ltration.
Leak test all gas line joints and the gas control valve prior
to and after starting the fi replace.
Before making the gas connection, ensure that the appliance
you are installing is designed for the type of gas being
supplied. This information can be found on the Ratings Label
under the appliance. If the appliance has been converted to
propane (LP), the valve cover should have a label stating
that the unit has been converted to propane.
Connect the gas line at the 3/8 in. (9.5mm) pipe connector
on the valve at the back of appliance. We recommend
connecting the appliance with an approved flex gas line.
If flex gas lines are not approved in your area, you must
connect a hard pipe to the gas hookup.
You must supply a manual shut-off valve in a visible location
within 3 feet (914mm) of the appliance.
10/08