02/04
4031-117 Rev I
21
NOVUS DIRECT VENT INSTALLATION INSTRUCTIONS
1. High Altitude Installation
For U.S. installation, appliances are tested and approved for elevations from 0-2000 feet. When installing this
appliance at an elevation above 2000 feet, National Fuel Gas Codes require a decrease of the input rating by
changing the existing burner orifice to a smaller size. Input should be reduced 4% for each 1000 feet above sea
level. Check with the local gas utility for proper orifice size identification. The correct orifice is available from your
Heatilator distributor.
For Canada, appliances are certified for elevations from 0-4500 feet. When installing this appliance at an elevation
between 0-4500 feet in Canada, the input rating does not need to be reduced. When installing this appliance at an
elevation above 4500 feet in Canada, check with local authorities.
Note:
This appliance and its manual shutoff valve
must be disconnected from the gas supply pip-
ing system during any pressure testing of that
system at test pressures in excess of 1/2 psi (3.5
kPa). The appliance must be isolated from the
gas supply piping system by closing its manual
shutoff valve during any pressure testing of the
gas supply piping system at test pressures equal
to or less than 1/2 psi (3.5 kPa).
I. UTILITIES
2. Connect the Gas Line
The appliance is provided with a stainless steel flexible
connector and listed (and Commonwealth of Massachusetts
approved T-handle) manual shutoff valve. See Figure 42. The
incoming gas line should be piped into the valve compartment
and connected to the 1/2 in. FIP connection provided on the
manual shutoff valve. All connections must be tightened and
checked for leaks with a commercially available, non-corrosive
leak check solution. Be sure to rinse off the solution when
done leak testing. Bleed the gas line to extract any air that may
have been trapped inside the pipe. See Figure 43 to connect
the gas line. Gas connections may also be made by taking out
the knockout in the bottom pan to allow connection through
the bottom of the appliance.
WARNING!
This valve has been preset at the factory.
Altering settings may result in fire hazard
or bodily injury.
Figure 43 - Gas Line
3. Gas Pressure
On both the standing pilot and the intermittent pilot gas valves, the inlet pressure and manifold (outlet) pressure
taps are available on the face of the valve. Pressure taps are immediately upstream of the gas supply connection
and accessible for test gauge connection. Table 2 shows optimum gas pressure information. Consult your local
gas company for assistance in determining the proper orifice for you altitude or refer to
ANSI Z223.1-latest edition,
Appendix F
.
4. Fuel Conversion
Natural or propane gas conversions necessary to meet the appliance need to be made by a qualified technician
using Hearth & Home Technologies specified and approved parts.
In the event your appliance must be converted to use propane, you must use a CKVP or DCKVP Conversion Kit. To
convert your appliance to natural gas, you must use a CKVN or DCKVN Conversion Kit.
Note:
Have the gas supply line installed in accordance with build-
ing codes by a qualified installer approved and/or licensed as re-
quired by the locality. In the Commonwealth of Massachusetts, in-
stallation must be performed by a licensed plumber or gas fitter.
Figure 42
Flexible Connector and Manual Shutoff Valve