Regency L676E-NG User Manual

Page of 48
Regency
®
 L676E Direct Vent Gas Fireplace
26
INST
ALLA
TION
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 unit is turned OFF.
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)  Turn the unit ON.
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 unit, 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.
PILOT ADJUSTMENT
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.
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:  If you have an incorrect fl ame pattern, 
contact your Regency
®
 dealer for 
further instructions.
Incorrect fl ame pattern will have small, 
probably yellow fl ames, not coming into 
proper contact with the rear burner or fl ame 
sensor. 
 
Periodically check the pilot fl ames. Correct 
fl ame pattern has three strong blue fl ames: 
1 fl owing around the pilot, 1 fl owing around 
the fl ame sensor and 1 fl owing across the 
burner (it does not have to be touching the 
burner).
L676E-NG SYSTEM DATA
Min. Supply Pressure
5" WC (1.25 kpa)
Low Setting Man. 
Pressure
1.6" WC (0.39 kpa)
Max. Manifold 
Pressure
3.5" WC (0.87 kpa)
Orifi ce Size (Front 
Burner)
#48 DMS
Orifi ce Size (Back 
Burner)
#34 DMS
Minimum Input
11,000 Btu/h 
(3.22 kW)
Maximum Input
42,000 Btu/h
(12.3 kW)
L676E-LP SYSTEM DATA
Min. Supply Pressure
12" WC (2.98 kpa)
Low Setting Man. 
Pressure
3.6" WC (2.49 kpa)
Max. Manifold 
Pressure
10" WC (2.98 kpa)
Orifi ce Size (Front 
Burner)
#56 DMS
Orifi ce Size (Back 
Burner)
#53 DMS
Minimum Input
9,000 Btu/h 
(2.64 kW)
Maxiumm Input
40,000 Btu/h
(11.72 kW)
INSTALLATION
AERATION 
ADJUSTMENT
The burner aeration is factory set but may need 
adjusting due to either the local gas supply or 
altitude. Open the air shutter for a blue fl ame or 
close for a more yellow fl ame. 
In order to adjust the aeration, the logs, grate 
and burners will need to be removed to be able 
to access the shutters.
Minimum Air Shutter Opening:
NG   Front Burner 
1/4"
  
Rear 
Burner 
 
1/8"
LP   Front 
Burner 
5/16"
  
Rear 
Burner 
 
1/4"
CAUTION:  Carbon will be produced if air shutter 
is tightly closed.
Note:   Any damage due to carboning 
resulting from improperly setting 
the aeration controls is NOT covered 
under warranty.
EV1
EV2
R.Q.
ADJ.
P.OUT
MD
4
3
2
1
Pin
11
8
9
10
1
2
3
4
6
7
5
SIT 845 VALVE DESCRIPTION
1)  On-Off Solenoid Valve EV1
2)  On-Off Solenoid Valve EV2
3)  Inlet Pressure Test Point
4)  Outlet Pressure Test Point
5)  Connection for Pressure Regulator / 
 Combustion 
Chamber 
Compensation
6)  Pressure Regulator for Minimum and
 
Maximum Outlet Pressure
7)  Gas Outlet Pressure Electric Modulator
8) Pilot 
Outlet
9)  Main Gas Outlet
10) Side Outlet
11) Main Gas Inlet