Pre-Installation - Lochinvar EGS-I&S-01 Installation & Service Manual

EGS-I&S-01
ADJUSTABLE AQUASTAT – The temperature may
be adjusted from 80°F to 160°F. The aquastat (thermostat)
was adjusted to 120°F before the heater was shipped from
the factory. It is recommended that lower temperatures be
used to avoid the risk of scalding. Refer to the "Warnings"
and the section on SCALDING "under – Operating
Instructions." It is further recommended, in all cases, that
the water temperature be set for the lowest temperature that
satisfies your hot water needs. This will also provide the
most energy efficient operation of the water heater and
minimizes scale formation.
Setting the water heater temperature at 120°F will reduce
the risk of scalds. Some states require settings to specific
lower temperatures.
WARNING
Install a discharge line so that water discharged from the
temperature and pressure relief valve will exit within six
(6) inches above, or any distance below, the structural
floor and cannot contact any live electrical part. The
discharge line is to be installed to allow for complete
drainage of both the temperature and pressure relief valve
and the discharge line. The discharge opening must not
be subjected to blockage or freezing. DO NOT thread,
plug, or cap the discharge line. It is recommended that a
minimum clearance of four (4) inches be provided on
the side of the water heater for servicing and maintenance
of the combination temperature and pressure relief valve.
Do not place a valve between the combination
temperature and pressure relief valve and the tank!
SACRIFICIAL ANODES—Three sacrificial anode rods
have been installed in the tank head to extend tank life. The
anode rods should be inspected annually to determine the
amount of sacrificial decay and replaced when necessary to
prolong tank life. Water conditions in your area will
influence the time interval for inspection and replacement
of the anode rod. The use of a water softener may increase
the speed of anode consumption. More frequent inspection
of the anode is needed when using softened (or phosphate
treated) water. Contact the plumbing professional who
installed the water heater or the manufacturer listed on the
rating plate for anode replacement information.

PRE-INSTALLATION

INSPECT SHIPMENT carefully for any signs of damage.
If damage is noted, do not install the product. Contact the
shipper or manufacturer listed on rating plate. All equipment
is carefully manufactured, inspected, and packed. Our
responsibility ceases upon delivery of the packaged heater
to the carrier in good condition.
NOTE: Any claims for damage or shortage in shipment
must be filed immediately against the carrier by the
consignee.
IMPORTANT DECISIONS REQUIRED
BEFORE INSTALLATION
1. Boiler DOE Heating Capacity – The Single-wall
Indirect water heater will provide the rated
performance only if used in conjunction with a
boiler with a DOE heating capacity (Boiler Output)
minimum of 220,000 Btu/hr. If the boiler has less
capacity, the output of the tank will be reduced. To
determine the approximate reduction in output from
the tank use the following formula:
New Rating = (maximum first hour rating) x
Actual Boiler Output Capacity
Minimum Boiler Output Capacity
For example, what would the 140°F first hour rating be if
model EGS050 was installed with a boiler having a DOE
heating capacity of 180,000 BTU/hr?
Answer:
New Rating
= 297 gal/hr x (180,000 BTU/h)/(220,000 BTU/hr)
= 297 gal/hr x 0.818 = 243 gal/hr
NOTICE
Increasing the boiler DOE heating capacity above
220,000 Btu/hr will not increase the rating of the
water heater. Ratings are based on 180°F boiler
water.
2. Circulator Sizing – Refer to Table below for the
corresponding pressure drop through the coil for
the given model. Calculate the pressure drop of
all straight pipe and fittings on the supply and
return of the water heater at the selected flow
rate. Add the piping/fitting pressure drop to the
pressure drop through the water heater coil. Select
a circulator that will provide an appropriate flow
rate at the combined pressure drop.
4
SIZING