Important; Si (Metric) Conversion Factors; Before You Begin - Modine HDS Manuel D'installation

SPECIAL PRECAUTIONS / SI (METRIC) CONVERSION FACTORS
CAUTION
18. The unit should be isolated from the gas supply piping
system by closing its field installed manual shut-off valve.
This manual shut-off valve should be located within 6' of
the heater.
19. Turn off all gas before installing appliance.
20. Ensure that the supply voltage to the appliance, as
indicated on the serial plate, is not 5% less than the rated
voltage.
21. Check the gas inlet pressure at the unit upstream of the
combination gas control. The inlet pressure should be
6-7" W.C. on natural gas or 12-14" W.C. on propane. If
inlet pressure is too high, install an additional pressure
regulator upstream of the combination gas control.
22. Service or repair of this equipment must be performed by
a qualified service agency.
23. Do not attempt to reuse any mechanical or electronic
ignition controllers which has been wet. Replace defective
controller.

IMPORTANT

1. To prevent premature heat exchanger failure, do not locate
ANY gas-fired appliances in areas where corrosive vapors
(i.e. chlorinated, halogenated or acid) are present in the
atmosphere.
2. To prevent premature heat exchanger failure, the input to
the appliance as indicated on the serial plate, must not
exceed the rated input by more then 5%.
3. To prevent premature heat exchanger failure, observe
heat exchanger tubes. If the tubes become red while
blower and furnace are in operation, check to be sure the
blower has been set to the proper rpm for the application.
Refer to page 15 for blower adjustments.
4. Start-up and adjustment procedures must be performed
by a qualified service agency.
To check most of the possible remedies in the troubleshooting
guide listed in Table 19.1, refer to the applicable sections of the
manual.

SI (METRIC) CONVERSION FACTORS

To Convert Multiply By To Obtain
"W.C. 0.249 kPa
°F (°F-32) x 5/9 °C
Btu 1.06 kJ
Btu/ft 37.3 kJ/m
3
Btu/hr 0.000293 kW
CFH (ft /hr) 0.000472 m /min
3 3
CFH (ft /hr) 0.00000787 m
3 3
CFM (ft /min) 0.0283 m /min
3 3
CFM (ft /min) 0.000472 m
3 3
To Convert Multiply By To Obtain
feet 0.305
Gal/Hr. 0.00379
Gal/Hr. 3.79
gallons 3.79
3
Horsepower 746
inches 25.4
/s pound 0.454
psig 6.89
/s psig 27.7

BEFORE YOU BEGIN

1. All literature shipped with this unit should be kept for future
use for servicing or service diagnostics. Leave manual with
the owner. Do not discard any literature shipped with this unit.
2. Consult piping, electrical, and venting instructions in this
manual before final installation.
3. Do not attach ductwork, air filters, or polytubes to any
propeller unit heater.
In the U.S., the installation of these units must comply with the
National Fuel Gas Code, ANSI Z223.1 - latest edition (NFPA
54) and other applicable local building codes. In Canada, the
installation of these units must comply with local plumbing or
waste water codes and other applicable codes and with the
current code CSA-B149.1.
1. All installation and service of these units must be
performed by a qualified installation and service agency
only as defined in ANSI Z223.1, latest edition or in
Canada by a licensed gas fitter.
2. This unit is certified with the controls furnished. For
replacements parts, please order according to the
replacement parts list on serial plate. Always know your
model and serial numbers. The right is reserved to
substitute other authorized controls as replacements.
3. Unit is balanced for correct performance. Do not alter fan
or operate motors at speeds below what is shown in this
manual.
4. Information on controls is supplied separately.
5. The same burner is used for natural and propane gas.
m
m /hr
3
l/hr
l
W
mm
kg
kPa
"W.C.
6-584.11
CAUTION
3