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INSTALLATION
L900-NG SYSTEM DATA
Min. Supply Pressure
5" WC (1.25 kpa)
Low Setting Man.
1.6" WC (0.39 kpa)
Pressure
Max. Manifold
3.5" WC (0.87 kpa)
Pressure
Orifi ce Size (Front
#47 DMS
Burner)
Orifi ce Size (Back
#30 DMS
Burner)
Minimum Input
11,000 Btu/h
(3.22 kW)
Maximum Input
48,000 Btu/h
(12.3 kW)
L900-LP SYSTEM DATA
Min. Supply Pressure
12" WC (2.98 kpa)
Low Setting Man.
3.6" WC (2.49 kpa)
Pressure
Max. Manifold
10" WC (2.98 kpa)
Pressure
Orifi ce Size (Front
#56 DMS
Burner)
Orifi ce Size (Back
#50 DMS
Burner)
Minimum Input
9,500 Btu/h
(2.64 kW)
Maxiumm Input
46,500 Btu/h
(11.72 kW)
HIGH ELEVATION
This unit is approved in Canada for altitude 0
to 4500 ft. (CAN1 2.17-M91).
GAS LINE
INSTALLATION
Since some municipalities have additional
local codes it is always best to consult with
your local authorities and the CAN/CGA B149
installation code.
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
servicing. Flare nuts for copper lines and fl ex
connectors are usually considered to meet this
requirement.
26
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.
PILOT ADJUSTMENT
Periodically check the pilot fl ames. Correct
fl ame pattern has three strong blue fl ames:
1 fl owing around the thermopile, 1 around
the thermocouple and 1 fl owing across the
burner (it does not have to be touching the
burner).
Note: If you have an incorrect fl ame pattern,
contact your Regency
further instructions.
Incorrect fl ame pattern will have small,
probably yellow fl ames, not coming into
proper contact with the rear burner or
thermopile or thermocouple.
GAS PIPE PRESSURE
TESTING
The appliance must be isolated from the gas
supply piping system by closing its individual
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.
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 should
be checked using the valve pressure
ports on the valve.
1) Make sure the valve is in the "OFF"
position.
2) Loosen the "IN" and/or "OUT" pressure
tap(s), turning counterclockwise with a
1/8" wide fl at 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.
5) The pressure check should be carried out
with the unit burning and the setting should
be within the limits specifi ed on the safety
label.
6) When fi nished reading manometer, turn
off the gas valve, disconnect the hose and
tighten the screw (clockwise) with a 1/8" fl at
screwdriver. Note: Screw should be snug,
but do not over tighten.
SIT 825 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
®
dealer for
IN
6
Regency
®
1
2
3
4
OUT
5
L900 Direct Vent Gas Fireplace
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