Installation manual
9
Regency E21 Gas Fireplace Insert
Note:  Do not operate unit if fl ue connector is not 
fastened in original position.
WIRING DIAGRAM FOR THE E21-NG1 AND E21-LP1
INSTALLATION
CAUTION:      Label  all  wires  prior 
to  disconnection  when  servicing 
controls.  Wiring  errors  can 
cause improper and dangerous 
operation.
WARNING: Electrical Grounding 
Instructions
This  appliance  is  equipped  with  a 
three pronged (grounding) plug for 
your protection against shock hazard 
and should be plugged directly into 
a  properly  grounded three-prong 
receptacle. Do not cut or remove the 
grounding prong from this plug.
This heater does not require a 120V A.C. supply 
for  operation.  In  case  of  a power  failure,  the 
burner switch and the optional remote control/
thermostat will continue to operate. However, 
a  120V A.C.  power  supply is  needed for  the 
fan/blower operation.
Caution: Ensure that the wires do 
not touch any hot surfaces and are 
away from sharp edges.
When connected with 120 volts, the appliance 
must  be  electrically  grounded  in  accordance 
with  local  codes  or,  in  the  absence  of  local 
codes the current CSA C22.1 (in Canada) or 
with the National Electrical Code ANSI/NFPA 
70-1987 (in USA). 
NOTE: This  unit  is  equipped  with  a  heat 
sensor  thermodisc  which  will 
prevent the blower from operating 
until  the  unit  reaches  the  correct 
temperature.
Green
Ground
Neutral
Live
Black
Black
Re
d
Black
Fan
Thermodisc
ON OFF
Rotary Speed
Control
120V AC
60 Hz
Ground
Fan
Grounding
Lug Detail
Lockwasher
Fan ground
Power cord
ground wire
St
ar washer
Nut
Nut
#8 Ground Lug
St
ar washer
Gas
Pilot
Thermopile
Electrode
Gas
In
Piezo
Ignitor
Thermocouple
In
Brown
Re
d
White
Pilot
Assembly
"S.I.T" Valve
H
I
L
O
O
F
F
O
N
P
I
L
O
T
Vent Spill
Switch
(Auto Reset)
Burner
ON
OFF
Remote
Transmitter
(Optional)
Thermostat
(Millivolt)
(Optional)
Remote
Receiver
(Optional)
(Millivolt)
ONOFF
Regency
Black
Red
FLUE CONNECTOR INSTALLATION 
1)
  Remove the screw holding the fl ue connector 
plate to the appliance.
2)
  Slide  the plate  out  and attach  to 
the  fl ue  liner  inside  the  fi replace 
to the fl ue collar with three sheet 
metal screws.
3)
  Place the appliance on the hearth. 
Push  the  appliance  into  the  fi re-
place and at the same time slide the 
plate back onto the appliance.
4)
  Replace the screw holding the plate just 
  Replace the screw holding the plate just 
before completely pushing the appliance into 
the fi replace.










