| How
long does it take to install a Residential Emergency Home
Standby generator?
The air-cooled 7 kW, 12 kW and 15 kW, which comes
equipped with a comprehensive installation kit, can take
as little as 4 hours to install. The liquid-cooled 15 kW
to 45 kW generators will normally take up to 14 hours over
2 days. Air-cooled units are typically installed on a
composite mounting pad. Liquid-cooled units, because of
their additional weight, must be installed on a stronger
mounting surface. The increased installation time is
necessary to pour a concrete slab and allow for it to set
properly. If the installer can source a prefabricated
mounting pad that will meet the increased weight
requirements of a liquid-cooled unit, the installation
time will be reduced accordingly.
The length of time is based on a typical application.
It does not apply to applications that require extended
runs of conduit or gas piping or the placement of a unit
far from the incoming gas or electrical service.
How do you size a generator?
The only completely accurate way is to have an
electrician apply an amp meter to the circuits or
appliances that are being chosen to operate under
emergency backup power. It is recommended that the amp
draw be measured as the appliance "starts up"
when that appliance used an inductive or resistive motor.
You may also refer to our air-cooled models that offer 8,
10 or 12 circuits.
How much fuel does a Residential
Emergency Home Standby generator use?
| |
7
KW
Air-Cool |
12
KW
Air-Cool |
15
KW
Air-Cool |
15
KW
Liquid-Cool |
20
KW
Liquid-Cool |
25
KW
Liquid-Cool |
40
KW
Liquid-Cool |
| Nat.
Gas cu ft/hr |
105 |
185 |
240 |
277 |
369 |
441 |
735 |
| Lp
Gas cu ft/hr (gal/hr) |
44.1
(1.2) |
79.0(2.17) |
102.3
(2.8) |
110
(3.1) |
143
(4.0) |
175
(4.8) |
310
(8.8) |
Figures are fuel consumption values at
100% (full) load. It is unlikely that the generator would
run at full load for an extended period of time.
Therefore, your consumption would decrease accordingly.
The generator that I've chosen
has a 100-amp automatic transfer switch. What if I have
200-amp service in my home?
It is always recommended that
emergency circuits be isolated by the emergency load
center. An isolated sub-panel will prevent the possibility
of the generator becoming overloaded. Thus, the system
will respond automatically.
Will 200-amp automatic transfer
switches be available for the air-cooled models, and the
15 kW and 20 kW liquid-cooled Residential Emergency Home
Standby generators?
No. It is not electrically
necessary. The outputs of these generators are safely
carried with the 100-amp automatic transfer switch.
What is the expected life of the
engine?
A properly maintained engine should
provide over 20 years of operation under emergency standby
conditions. Keep in mind that the units are not intended
to provide continuous power (24 hours a day, 365 days a
year).
Where can I purchase parts?
Parts may be obtained through High
Point Refrigeration & A/C Company. Part numbers are
located in the owner's manual.
What is the cost of a
service/maintenance contract?
We recommend having your Guardian®
system serviced twice a year. Your sales
representative will show you all the service options
available and the rates. Be assured that service
rates are nominal and offer a high value to keep your
system in top condition.
How much oil does the engine
crankcase hold?
Air-cooled: 7 kW, 12 kW and 15 kW
– 1.7 qt.Liquid-cooled: 15 kW, 20 kW and 25 kW – 4.0
qt.Liquid-cooled: 45 kW – 4.5 qt.
What type of oil is recommended?
The recommended oil for the 7 kW,
12 kW and 15 kW air-cooled units is 10W-30 temperatures
above 20° F. Use 5W-20 or 5W-30 for temperatures below 20°
F. After the first oil change, all-season 5W-30 synthetic
oil may be used. API Service Class SG, SH or SJ should be
used in all cases.
The recommended oil for the liquid-cooled units is
15W-40. All oil should be SAE rated high detergent oil
that meets API Service Class SF requirements for gasoline
engines.
Propane tanks are usually rated by
pounds. Is there a conversion that can be applied to the
fuel consumption numbers?
Yes. For general conversion,
propane weighs 4.24 pounds per gallon. 1 lb. = 8.58 cu.
ft.. 1 gallon = 36.39 cu. ft.. |
