COZY CDV142E - Gas Piping and Conversion Procedures; Gas Conversion Kit Information; Gas Piping Installation and Connection Details

12
INSTALLING YOUR FURNACE
Gas Piping
The gas supply line must be of an adequate size to handle the BTU/hr.
requirements and length of the run for the unit being installed.
Determine the minimum pipe size from Figure 14, basing the length of
the run from the gas meter or source to the unit.
All piping must comply with local codes and ordinances or with the
National Fuel Gas Code (ANSI Z223.1 NFPA No. 54), whichever
applies. (In Canada: CAN/C.G.A B149). Refer to Figure 12 for the
general layout of the unit. It shows the basic ttings needed.
1. Use new, properly reamed pipe free from chips such as
steel or black iron pipe and ttings that are approved by
local codes. Metal chips and debris can damage the
gas valve.
2. Do not thread the pipe too far. Distortion or malfunction
may result from excess pipe within the control valve. Apply
a moderate amount of good quality dope to the pipe
threads only. Leave the two end threads bare. Figure 13
On propane gas installations, use a compound resistant
to action of liqueed petroleum gases.
3. Use ground joint unions.
4. Install a drip leg (sediment trap) to trap dirt and moisture
before it can enter the gas valve. The nipple must be a
minimum of 3-inches long.
5. Install a manual shuto󰀨 valve.
6. Provide a 1/8" NPT test gauge connection immediately
before the gas supply connection to the furnace.
GAS CONNECTION
If installation is for propane gas, use a two-stage regulator and make
all connections from the storage the tank to furnace.
Use two pipe wrenches when making the connection to the valve to
prevent turning and/or damage to the gas valve.
The connection between the shuto󰀨 valve and the burner control
assembly can be made with an A.G.A / C.G.A. design certied
exible connector if allowed by local codes.
Tighten all joints securely.
GAS CONVERSION KITS
DESCRIPTION MODELS
NATURAL GAS TO PROPANE GAS FOR CDV14 SERIES 8939
NATURAL GAS TO PROPANE GAS FOR CDV22 SERIES 8940
NATURAL GAS TO PROPANE GAS FOR CDV30 SERIES 8941
PROPANE GAS TO NATURAL GAS FOR CDB14 SERIES 8942
PROPANE GAS TO NATURAL GAS FOR CDB22 SERIES 8943
PROPANE GAS TO NATURAL GAS FOR CDB30 SERIES 8944
FIGURE 12
PROPER PIPE
THREADING
INCORRECT
THREADING
2 THREADS EXPOSED
SEALANT THIN
ENOUGH TO SHOW
THREADS
OVER-THREADED
SEALANT
TOO THICK
SEALANT
PAST TIP
DAMAGED
THREADS
FIGURE 13