© 1995-2009 Energy Saving Products Ltd.
Specifications
HWC-50 Coil
HWC-70 Coil
HWC-100 Coil
HWC-1750 Coil
Matching Fan Coil
HE/HV-50/51
LV-50
HE/HV-70/71
LV-70
LV-E-1050
HE/HV-100/101
LV-120/140
LV-E-1750
Coil Type
6 Row/10 FPI
6 Row/10 FPI
6 Row/10 FPI
6 Row/12 FPI
Part Number
20100100050
20100100070
20100100100
20090101750
Fin Material
Aluminum
Aluminum
Aluminum
Aluminum
Tubing Material
Copper
Copper
Copper
Copper
Type of Fins
.006 Al (0.1524mm)
.006 Al (0.1524mm)
.006 Al (0.1524mm)
.006 Al (0.1524mm)
Hydronic
Connection
Sizes
Supply
3/4” (19mm)
3/4” (19mm)
3/4” (19mm)
1
1⁄8
” (29mm)
Return
3/4” (19mm)
3/4” (19mm)
3/4” (19mm)
1
1⁄8
” (29mm)
Flow Rate (GPM)
5 (0.32 L/s)
7 (0.44 L/s)
10 (0.63 L/s)
10 (0.63 L/s)
Pressure Drop FT. H
2
O
3 (9.0 kPa)
6.5 (19.4 kPa)
6.8 (20.3 kPa)
4.9 (14.65 kPa)
Coil Dimensions
13
1
⁄2
” x 5
1
⁄2
” x 16”
(343mm x 140mm x 406mm)
19” x 5
1
⁄2
” x 16”
(483mm x 140mm x 406mm)
25” x 5
1
⁄2
” x 16”
(635mm x 140mm x 406mm)
26
1
⁄4
” x 8” x 22
5
⁄8
”
(667mm x 200mm x 575mm)
Shipping Weight
17 lbs (8kg)
21 lbs (10kg)
28 lbs (13kg)
45 lbs (13kg)
Max. BTUH
180°F E.W.T. (kW @ 82°C)
54,500 (16.0 kW)
81,800 (24.0 kW)
122,900 (36.0 kW)
137,000 (40.0 kW)
Fig. 02 - Hot water tank: With side take-offs
Domestic
hot water
mixing valve
(optional)
Domestic
cold water
Dual
Purpose
hot water
tank
SUPPLY
RETURN
SUPPLY
RETURN
Fan Coil
C
C
H
H
Piping The Hot Water Coil
Fig. 01 - Hot Water Coil easily slides into the fan coil
Installation
Hot Water Coil Add-On
Module HWC
Hot Water Coil Installation (1/1)
Module HWC Hot Water Coil Installation (1/1)
Table 01 – WCM/WM pipe sizing
Zone BTUH
Heat loss
Pipe Size
up to 40 feet
Pipe Size
40 – 100 feet
0 - 35,000
(0 - 10.3 kW)
5⁄8”
(16mm)
3⁄4”
(19mm)
35,001 - 70,000
(10.4 - 20.5 kW)
3⁄4”
(19mm)
1”
(25mm)
70,001 - 140,000
(20.6 - 41.0 kW)
1”
(25mm)
1 1⁄4”
(32mm)
Designed for the Hi-Velocity System, the HWC is a High
Capacity Hydronic Heating water coil that comes installed
in the “H” Series fan coils and can be field installed in the
“BU” Series fan coils. To install, simply remove the front
blower panels, and slide the coil into place on the supply air
side of the blower.
(Fig. 01)
The water coil is designed with ¾” copper connections
with 6 internal rows of 3/8” copper tubing, for high heat
transfer ratings even when using low water temperature
sources. The coil is factory tested at 500 psi for leaks, and
is designed to have a low water pressure drop through the
coil reducing pump head loss.
The Fan Coil can be installed in upflow, counterflow or
horizontal positions, using the lowest water connection into
the coil as the supply line and the highest water connection
as the return line, to reduce possible air trapping within the
coil. Typical hot water heating sources used are dual purpose
hot water tanks (natural gas or oil), boilers (gas, oil, electric
or wood fired), and even solar heating systems. Geo-thermal
systems, water-to-water heat pumps or reverse cycle chillers
would use the WM or WCM coils, as they have a drain pan
incorporated within the coil casing, for condensate water
formed from the cooling cycle.
Incorporated within
the circuit board there is
a timer that when turned
on will duty cycle the
circulation pump for 5
minutes every 24 hours
to ensure there is no
stagnate water within the
water coil. Spring check
valves are required to be
installed on the supply
and return to prevent
gravity flow from the hot
water source on a call for
cooling or constant fan.
Size your supply and return lines according to
Table 01
.
Figs. 02 and 03
illustrated typical pipe runs from a dual
purpose hot water tank to a fan coil. These drawings are
only for reference as all piping has to be run according to
local codes.
Fig. 02 - Hot water tank: Without side take-offs
Domestic
hot water
mixing valve
(optional)
Domestic
cold water
Dual
Purpose
hot water
tank
SUPPLY
RETURN
Fan Coil
C
C
H
H
RETURN
When used with dual purpose hot water tanks, be sure to
size the tank for both the domestic hot water usage as well
as the heating requirements.
