© 1995-2009 Energy Saving Products Ltd.
Module ESH
Electrical Strip Heater Installation (4/4)
Module ESH Electrical Strip Heater Installation (4/4)
optional wiring for electrical strip heater (ESH)
OPTIONAL
THROUGH OUT DOOR THERMOSTAT
STAGING THE 15-23 KW UNITS
For optional energy savings install a
outdoor thermostat to limit the use of
the second stage of the ESH. For
example - 2 staging the electric strip
interrupt “C” and “1” or “C” and “2”
with a outdoor stat as shown below.
This allows single stage of the two
banks of the electric strip to activate,
the second stage will be allowed to
activate by the outdoor stat.
TWO
STAGE
OUTDOOR STAT
Set to 42°F (5°C)
minimum
C
1
2
C
1
2
SINGLE
STAGE
C
1
2
C
1
2
SINGLE STAGE
ELECTRIC STRIP
INTERNAL 24V
Z1 C H1 X2 X1
C
W1 W2 C G R Y2 Y1 D O/B
THERMOSTAT
W2
C
R
G
AUXILIARY RELAY
(HEATING)
A3
A2
A1
L
N
W1
2 Stage Heating
OPTIONAL
THROUGH THERMOSTAT
STAGING THE 15-23 KW UNITS
ELECTRIC STRIP
24V TERMINALS
TWO
STAGE
C
1
2
1
2
A1 AND A3 -
HEATING MODE
AUXILIARY CONTACT
W1 And W2 Only
Z1
- HEATING MODE
24V OUTPUT
(W2 Only)
SET AUXILIARY TIMER
TO THE “OFF” POSITION
A3
A2
A1
L
N
AUXILIARY RELAY
(HEATING)
W1 W2 C G R Y2 Y1 D O/B
Z1 C H1 X2 X1
C
E
W2
C
R Y
G
W1
O/B
ANTI-ICE
CONTROL
O/B
Y
C
R
Z1
- HEATING MODE
24V OUTPUT
(W2 Only)
THERMOSTAT
1 Stage Cooling 2 Stage Heating
Heat pump c/w condenser defrost cycle
W1
X1 AND X2 -
WIRES TO ANTI-ICE CONTROL,
CONDENSING UNIT “Y” AND “C”
SIGNAL FROM H1 AND C TO
COMPLETE SIGNAL
A1 AND A3 -
HEATING MODE
AUXILIARY CONTACT
W1 And W2 Only
OPTIONAL
THROUGH THERMOSTAT
STAGING THE 15-23 KW UNITS
ELECTRIC STRIP
24V TERMINALS
TWO
STAGE
C
1
2
1
2
SET AUXILIARY TIMER
TO THE “OFF” POSITION
1 Stage Heating (Electric Strip)
1 Stage Cooling
1 Constant Low Speed
For highest blower speed on the fan coil for heating
and cooling, set the thermostat to electric mode
instead of gas. Wire the G terminal from the thermostat
to the Y2 of the fan coil. When there is a call for heat or
cool the fan will run at its highest dip setting air flow.
For constant low fan speed control wire a switch (light
switch or a toggle switch) at the fan coil between R and
G. When the thermostat is not calling for heating or
cooling and the fan switch is in the ON position the fan
will operate at half the fan speed for constant fan
circulation.
Note: This wiring is not required for heat pump set ups,
as Y2 is activated for both heating and cooling.
OPTIONAL WIRING FOR HIGHEST
FAN SPEED FOR HEATING AND COOING
Z1 C H1 X2 X1
C
W1 W2 C G R Y2 Y1 D O/B
THERMOSTAT
W C
R
Y
G
AUXILIARY RELAY
(HEATING)
A3
A2
A1
L
N
A1 AND A3 -
HEATING MODE
AUXILIARY CONTACT
W1 AND W2 ONLY
Z1
- HEATING MODE
24V OUTPUT
(W2 ONLY)
ANTI-ICE
CONTROL
1
2
Y
C
CONSTANT LOW
SPEED FAN
ON / OFF SWITCH
CONDENSER
ELECTRIC STRIP
24V TERMINALS
Y
WIRE FROM THE THERMOSTAT TO
ANTI-ICE CONTROL TO INTERRUPT
THE CONDENSERS “Y” SIGNAL
SET AUXILIARY TIMER
TO THE “OFF” POSITION
