Technical data

09
WHISPA III
®
5000, 7000 & 9000
08
WHISPA III
®
5000, 7000 & 9000
10.0 Operating Instructions9.0 Technical Data (continued...)
Model
Flowrate
(US gpm)
Fan Setting
Heat Output (Btu/h)
Entering Water Temperature (°F), Entering Air Temperature (65°F)
Boost
Normal
Boost
Normal
Boost
Normal
Boost
Normal
Boost
Normal
Boost
Normal
3
1
3
1
3
1
2040 2516 2997 3480 3967 4457 4949 5443 5939 6437
1749 2096 2437 2773 3104 3432 3756 4078 4397 4713
1795 2214 2637 3063 3491 3922 4355 4790 5226 5664
1539 1844 2144 2440 2732 3020 3306 3589 3869 4147
2758 3419 4089 4766 5450 6140 6834 7534 8238 8946
1673 2204 2771 3373 4004 4665 5351 6062 6797 7554
2427 3009 3598 4194 4796 5403 6014 6630 7249 7872
1473 1939 2439 2968 3524 4105 4709 5335 5981 6648
3759 4629 5504 6385 7271 8160 9053 9949 10848 11750
3266 3916 4556 5185 5807 6422 7031 7634 8233 8827
3308 4073 4844 5619 6398 7181 7967 8755 9546 10340
2874 3446 4009 4563 5110 5652 6187 6718 7245 7767
110 120 130 140 150 160 170 180 190 200
Heating Performance Data
5000
7000
9000
Fan Selector
Switch
Summer/Winter
Switch
LOW LIMIT
THERMOSTAT
MOTOR
Chassis
Earth
bk
w
LINE (Supply)
gr
w
y
r
ww
NEUTRAL (Supply)
GROUND
Fig. 9 Wiring diagram
This unit is controlled by the switches on the front of the unit.
Ensure the electricity supply is switched on.
Heating Mode
The fan will only operate when
• The central heating boiler is on
• The pump is running
• The system water temperature is greater than 110°F.
Ensure boiler is on, and set timer, boiler controls and room
thermostats as necessary.
• Turn room thermostat to a high setting.
• Set summer - winter switch to
• Set fan speed control position I.
• The unit will now run on low fan speed. For satisfactory
operation the mean water temperature should not be below
140°F.
Temperature Control
The room thermostat setting should be gradually adjusted to
obtain the desired temperature.
The fan speed can be set to boost by switching the fan speed
switch to II.
A low speed setting is recommended for normal operation with
the higher speeds for boost heating when required.
Low Limit Operation
The low limit thermostat fitted to the WHISPA III
®
will ensure
that the fan stops after the heating system is switched off and
the water flow stops. If left in an operating position the unit will
automatically restart when the heating system is reheated.
Off Position
Set the fan speed selector switch to the off (O) position.
Summer Mode
If required, the WHISPA III
®
can be used in summer for air
circulation without heat.
Set summer - winter switch to
Adjust fan speed to required setting.
9.010.0
Maximum inlet water temperature 200°F
Heat outputs tested in accordance with BS 4856 Part 1
Supply: 110V AAC 60Hz
Max working pressure: 145psi
Water connections: 1/2" Sweat
Approximate Hydraulic Resistance through Units
g/min
ft wg
3 4.90 5.90 6.89
1 0.75 0.85 1.07
5000 7000 9000
Weight, Water Content and Motor Power
Model
Motor
Power (W)
Water
Content (fl oz)
Unit Weight
(lbs)
5000 25 5 9.5
7000 40 10 10.3
9000 40 11.5 11
bk - black
w - white
gr - green
y - yellow
r-red
21475 Whispa Manual - US:Layout 1 8/5/09 09:34 Page 9