© 1995-2009 Energy Saving Products Ltd.
The Electrical Strip Heater (ESH) is an electric resistance
heater that slides into the fan coil on the leaving air side
(supply side) of the blower. This heater can be used for
primary heating or supplemental heat (auxiliary heating) for
heat pumps. The ESH has “0” clearance to combustibles,
and requires minimum clearances on the access side
for maintenance and servicing (see Fan Coil Placement:
Module FCP). Allow 18” minimum of straight plenum duct
from the supply of the air handler before any branch outlets,
tees or elbows.
The ESH elements are rated for 240V 60 Hz. Higher
voltages are not recommended. When lower voltages are
supplied, de-rate the capacity of the ESH accordingly.
230V = 92%, 220V= 84%, 208V = 75%. Use only wires
suitable for 167° F (75°C).
Wiring the Electrical Strip Heater
Electrical Strip Heater
Table 01
Kw
Volts/
Phase
# of
feeders
Circuit
Breakers
5
240/1
1 X 20.8
1 X 30A
10
240/1
1 X 41.6
1 X 60A’
15
240/1
1 X 20.8 1 X 41.6
1 X 30A 1 X 60A
18
240/1
1 X 31.2 1 X 41.6
1 X 40A 1 X 60A
20
240/1
2 X 41.6
2 X 60A
23
240/1
2 X 47.0
2 X 60A
Installation
The ESH is labeled with a directional airflow sticker;
when placing the ESH, the sticker shall be in the direction
of the air flow.
There is a minimum air flow requirement for the electric
strip heater:
The HE-50 and the HE-70 require a minimum of six
2”x10’ AFD outlets per 5 kW.
The HE-100 requires a minimum of seven 2”x10’ AFD
outlets per 5 kW.
*
One HE x 10’ AFD is equivalent to two - 2” x 10’ AFDs
Remove the shipping covers and inspect the heater
carefully. Check the ESH for any shipping damage, check
the heating elements for any loose connections and check
all porcelain insulators for any breaks. Report any damage
to the manufacturer. DO NOT INSTALL DAMAGED
HEATER.
Module ESH
Electrical Strip Heater Installation (1/4)
Module ESH Electrical Strip Heater Installation (1/4)
PLEASE NOTE: THE ESH MUST BE WIRED TO
A DEDICATED BREAKER, SEPARATE FROM THE
FAN COIL.
Install the ESH in the supply air side of the fan coil.
Remove the coil access door and simply slide the coil into
place. The heating elements
(Fig. 01)
must always be
installed horizontally. Seal the void between the fan coil
and the ESH with the foam tape supplied with the unit or
with a suitable sealant. Mount the ESH onto the fan coil
cabinet with 4 self tapping screws from inside the ESH
wiring access door. Seal any additional openings with a
suitable sealing compound.
The air handler and the ESH must have independent
power supplies.
Disconnect all power sources before
opening the control box and working within.
Wires shall
be sized according to local electrical codes and ordinances.
All wires must be brought in through knock-outs. See Table
01 for feeder quantity of feeder ampacity.
The ESH 5 and 10 kW units have one single 240V
breaker; the 15 kW to 23 kW units come complete with
two supply circuit breakers. These two circuits can
be joined together using a Jumper Bar (Square D® –
QOU14100JBAF, not supplied) designed to use one pair
of larger gauge wire instead of two smaller gauge wires.
Install as per manufacturers guide lines, and according
to code. A disconnect switch close to the heater will be
required.
E
LEMENTS
ARE
TO
BE
INSTALLEd
H
ORIzONTALLY
,
NOT
v
ERTICALLY
Control circuit wiring between the heater terminals #1
and #2 on the ESH use Class 2 - 18 gauge wire to the zone
valve terminals in the fan control box.
Fig. 01 - Do not install elements Vertically