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U39 ULTIMATE Direct Vent Freestanding Gas Stove
23
U39-NG1: For 0 to 2000 feet altitude
U39-LP1: For 0 to 4500 feet altitude
Burner Inlet Orifi ce Sizes:
Natural Gas Propane
Burner #32 #50
Max. Input - Natural Gas/Propane
38,000 Btu/h
Min. Input - Natural Gas/Propane
20,000 Btu/h
Supply Pressure
Natural Gas min. 5" w.c.
Propane min. 12" w.c.
Manifold Pressure
Natural Gas 3.8" +/- 0.2" w.c.
Propane 11" +/- 0.2" w.c.
Electrical: 120 V. 1.13A 60Hz.
Circulation: Variable speed fan, 125/75
CFM.
Log Set: Ceramic fi ber, 7 per set.
System Data:
HIGH ELEVATION - U39-NG1
For 2,000 - 4,500 feet altitude
Burner Inlet Orifi ce Sizes:
Natural Gas Burner #33
Max. Input Rating 36,100 Btu/h
Min. Input Rating 19,000 Btu/h
System Data
U39 Converted to 30,000 Btu
For 0 to 4500 feet altitude
Burner Inlet Orifi ce Sizes:
Natural Gas Propane
Burner #37 #52
Max. Input - Natural Gas/Propane
30,000 Btu/h
Min. Input - Natural Gas/Propane
15,000 Btu/h
Supply Pressure
Natural Gas min. 5" w.c.
Propane min. 12" w.c.
Manifold Pressure
Natural Gas 3.8" +/- 0.2" w.c.
Propane 11" +/- 0.2" w.c.
Electrical: 120 V. 1.13A 60Hz.
Circulation: Variable speed fan, 125/75
System Data
U39 with 40,000 BTU
GAS CONNECTION
The gas connection is a 3/8" NPT 90
o
elbow.
The gas line can be rigid pipe or to make
installation easier, use a listed fl exible connector
and/or copper tubing if allowed by local codes.
Since some municipalities have additional local
codes it is always best to consult with your local
authorities and the CAN/CGA B149 installation
codes.
For USA installations follow local codes and/or
the current National Fuel Gas Code, ANSI
Z223.1.
When using copper or fl ex connectors use only
approved fi ttings. Always provide a union so that
gas lines can be easily disconnected for burner
and/or valve servicing. Flare nuts for copper lines
and fl ex connectors are usually considered to
meet this requirement.
Important: Always check for gas leaks with a
soap and water solution or gas leak detector.
Do not use open fl ame for leak testing.
Note: Prior to any pressure testing of the gas
supply piping system that exceeds
test pressures of 1/2 psig, this
appliance must be disconnected from
the piping system. If test pressures
equal to or less than 1/2 psig are used
then this appliance must be isolated
from the piping system by closing
its individual manual shut-off valve
during the testing.
HIGH ELEVATION
This unit (at 38,000 Btu/h) is approved in Canada
for altitude 2000 ft. to 4500 ft. (CAN/CGA-2.17-
M91) with the orifi ce kit Part # 621-975. For
Natural Gas installations above 4500 ft. follow
current CAN/CGA-B149.1.
In U.S.A., for installations above 2000 ft. refer
to current ANSI Z223.1 Sc8-8.1.2a appendix F,
for resizing orifi ce.
INSTALLATION
Diagram 9
9) Slide the Wall Thimble Cover (Part # 940)
over the Retro Connector and secure with
masonry bolts. Diagram 10. If you have a
framed wall in front of the masonry, use wood
screws to mount the Wall Thimble Cover to
the framed wall, over the Retro Connector
and the 10" (254mm) square framed opening.
Diagram 11. If needed, add a section of
direct vent pipe to the Retro Connector in
order to extend through the opening in the
Wall Thimble Cover.
Diagram 10
Diagram 11
10) The connection between the appliance and
the Retro Connector may be completed with
a section of black direct vent pipe, together
with an adjustable length pipe section.