Lochinvar EGS-I&S-01 Important Decisions Required Before Installation, Sizing, Pre-Installation

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!

NOTE: Any claims for damage or shortage in shipment must be filed immediately against the carrier by the consignee.

IMPORTANT DECISIONS REQUIRED

BEFORE INSTALLATION

SIZING

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

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.

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.

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