Gas Connection; Gas Pipe Pressure Testing - Regency ULTIMATE U38 Owners & Installation Manual

GAS CONNECTION

The gas line can be rigid pipe, or to make instal-
lation easier, use a listed flexible connector if
allowed by local codes. Copper may also be
used if approved by local codes.
The gas connection at the valve is 3/8" NPT.
For minimum and maximum supply pressure
see the System Data Table.
System Data
U38-10 with 40,000 BTU
U38-NG10: For 0 to 2000 feet altitude
U38-LP10: For 0 to 4500 feet alttitude
Burner Inlet Orifice Sizes:
Natural Gas
Burner #31
Max. Input
Natural Gas 40,000 Btu/h
Propane 38,000 Btu/h
Min. Input
Natural Gas 22,000 Btu/h
Propane 20,000 Btu/h
Supply Pressure
Natural Gas min. 5" w.c.
Propane min. 12" w.c.
Manifold Pressure
Natural Gas 3.8"
Propane 11"
Electrical: 115_60Hz.
Circulation: Variable speed fan, 125/75
CFM.
Log Set: Ceramic fiber, 7 per set.
System Data:
HIGH ELEVATION - U38-NG10
For 2,000 - 4,500 feet altitude
Burner Inlet Orifice Sizes:
Natural Gas Burner
Max. Input Rating 36,000 Btu/h
Min. Input Rating 19,000 Btu/h
System Data
U38-10 Converted to 30,000 Btu
For 0 to 4500 feet altitude
Burner Inlet Orifice Sizes:
Burner
Max. Input
Natural Gas
Propane
Min. Input
Natural Gas
Propane
Supply Pressure
Natural Gas
Propane
Propane
#50
Manifold Pressure
Natural Gas
Propane
Electrical: 115_60Hz.
Circulation: Variable speed fan, 125/75
CFM.
Log Set: Ceramic fiber, 7 per set.
GAS PIPE PRESSURE TEST-
ING
The appliance must be isolated from the gas
+/- 0.2" w.c.
supply piping system by closing its individual
+/- 0.2" w.c.
manual shut-off valve during any pressure
testing of the gas supply piping system at test
pressures equal to or less than 1/2 psig. (3.45
kPa). Disconnect piping from valve at pressures
over 1/2 psig (14" w.c.).
The manifold pressure is controlled by a regulator
built into the gas control, and should be checked
at the pressure test point.
Note: To properly check gas pressure,
both inlet and manifold pressures
#33
should be checked using the valve
pressure ports on the valve.
1) Make sure the valve is in the "OFF" posi-
tion.
2) Loosen the "IN" (# 7) and/or "OUT" (# 6)
pressure tap(s), turning counterclockwise
with a 1/8" wide flat screwdriver.
3) Attach manometer to "IN" and/or "OUT"
pressure tap(s) using a 5/16" ID hose.
4) Light the pilot and turn the valve to "ON"
position.
Natural Gas Propane
#37 #52
30,000 Btu/h
30,000 Btu/h
15,000 Btu/h
15,000 Btu/h
min. 5" w.c.
min. 12" w.c.
3.8" +/- 0.2" w.c.
11" +/- 0.2" w.c.
Regency
installation
5) The pressure check should be carried out with
the unit burning and the setting should be within
the limits specified on the safety label.
6) When finished reading manometer, turn off the
gas valve, disconnect the hose and tighten the
screw (clockwise) with a 1/8" flat screwdriver.
Screw should be snug, but do not over tighten.
SIT 829 VALVE DESCRIPTION
1) Gas on/off knob
2) Electronically Operated Hi/Lo
3) Pilot Adjustment
4) Thermocouple Connection - option
5) Outlet Pressure Tap
6) Inlet Pressure Tap
7) Pilot Outlet
8) Main Gas Outlet
9) Alternative TC Connection Point
U38-10 ULTIMATE Freestanding Gas Stove
®
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