temco-tool 41dvdsn Manuel D’Utilisation

9

1.  Thread wire through the electrical knockout located 

on either side of the unit. Take care not to cut the 
wire or insulation on metal edges. Ensure the wire is 
secured and protected from possible damage. Run 
one end of the gas control valve and the other end to 
the conveniently located wall switch.

When purging gas line, the front window frame as-
sembly must be removed.
1.  The gas pipeline can be brought in through the rear 

of the fireplace as well as the bottom. Knockouts are 
provided on the bottom behind the valve to allow for 
the gas pipe installation and testing of any gas con-
nection. It is most convenient to bring the gas line in 
from the rear right side of the valve as this allows fan 
installation or removal without disconnecting the gas 
line.

  The gas line connection can be made with prop-

erly tinned 3/8” copper tubing, 3/8” rigid pipe or an 
approved flex connector. Since some municipali-
ties have additional local codes, it is always best to 
con-  sult your local authority and the National Fuel 
Gas Code, ANSI Z223.1/NFPA 54 in the USA or the 
CSA-B149.1 installation codes.

*Adhere to the following installation requirements in the 
State of Massachusetts:

•

 

The installer must be a licensed plumber or gas fitter

.

•

 

Flex connectors must be Massachusetts approved, cannot 
exceed 36” (914 mm) in length, must be a minimum 1/2” 
dia. and may not penetrate a wall.

2.  The gas control inlet is 3/8” NPT. typical installation 

layout for rigid pipe is shown in Figure 8.

FP297A

INSTA VENT FREE

UVHB26 GAS SUPPLY 

7/1/98

1/2” Gas Supply

1/2” NPT x 3/8” Flare Shut-off 

Valve

3/8” Flex Line 

(from valve)

FP297a

Fig. 6  Typical gas supply installation.

3.  When using a flex connector,* use only approved fit-

tings. When a union is installed, provide easy access 
in its placement for servicing. Refer to gas specifica-
tion for pressure details and ratings.

4.  When a vertical section of gas pipe is required for 

the installation, a condensation trap is needed. In 
Canada see CSA-B149.1 for code details. See the 
National Fuel Gas Code ANSI Z223.1/NFPA 54 in 
the USA.

5.  For natural gas, a minimum of 3/8” iron pipe with a 

gas supply pressure of 4.5” w.c. (from the gas me-
ter). Consult with local gas utility and ANSI Z223.1/
NFPA 54 if any questions arise concerning pipe 
sizes.

6.  Turn the gas supply to ‘ON’ and check for leaks. DO 

NOT USE OPEN FLAME FOR THIS PURPOSE. 
Use an approved leak testing solution.

7.  The appliance and its appliance main gas valve 

must be disconnected from the gas supply piping 
system during any pressure testing of that system at 
test pressures in excess of 1/2 psig (3.5kPa).

8.  This appliance must be isolated from the gas supply 

piping system by closing its equipment shut off valve 
during any pressure testing of the gas supply piping 
system at test pressures equal to 1/2 psig (3.5KPa).

Always check for gas leaks with a mild soap and 
water solution. Do not use an open flame for leak 
testing.
The millivolt gas control is equipped with a captured 
screw type pressure test point, therefore it is not neces-
sary to provide a 1/8” test point up stream of the control.
When using copper or flex connector use only approved 
fittings. Always provide a union when using black iron 
pipe so that the gas line can be easily disconnected for 
burner or fan servicing . See gas specifications for pres-
sure details and ratings.
The fireplace valve must not be subjected to any test 
pressures exceeding 1/2 psi. Isolate or disconnect this 
or any other gas appliance control from the gas line 
when pressure testing.