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EGS-I&S-01

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WARNING

Installation is not complete unless a pressure and
temperature relief valve is installed into the side of
the water heater. See the Water Connections section
of this manual for details.

This water heater contains very hot water under high
pressure. Do not unscrew any pipe fittings or attempt
to disconnect any components of this water heater
without positively assuring the water is cool and has
no pressure. Always wear protective clothing and
equipment when installing, starting up, or servicing
this water heater to prevent scald injuries. Do not
rely on the pressure and temperature gauges to
determine the temperature and pressure of the water
heater.  This water heater contains components that
become very hot. Do not touch any components unless
they are cool.

Improper installation, adjustments, alteration,
service or maintenance can cause property damage,
personal injury or loss of life.  Failure to follow all
instructions in the proper order can cause personal
injury or death. Read and understand all instructions,
including all those contained in component
manufacturer’s manuals, which are provided with the
appliance before installing, starting-up, operating,
maintaining, or servicing this appliance.  Keep this
manual and literature in legible condition and posted
near the appliance for reference by owner and service
technician.

This water heater requires regular maintenance and
service to operate safely. Follow the instructions
contained in this manual. Installation, maintenance,
and service must be performed only by an
experienced, skilled, and knowledgeable installer or
service agency.

NOTICE

Insulation blankets are not required for this water
heater. This water heater meets or exceeds the
ASHRAE/IES 90.1b standards with respect to
insulation and standby loss requirements.

 

CAUTION

The maximum boiler water supply temperature to
the indirect heat exchanger must not exceed 240°F
(116°C).

 WARNING

It is the responsibility of the installing contractor to
see that all controls are correctly installed and are
operating properly when the installation is complete.

DO NOT operate the water heater with jumpered
or absent controls or safety devices.

DO NOT tamper with or alter the water heater and/
or controls.

DO NOT operate the water heater if any external
part has been under water.  Immediately call a
qualified service technician to inspect the appliance
and to replace any part of the control system that
was under water.

This water heater is suitable for installation on
combustible flooring. DO NOT install this water
heater on carpeting.

DO NOT operate this water heater without first
being certain it is filled with water.

Flammable items, pressurized containers, or any
other potential fire hazardous articles must never
be placed on or adjacent to the heater. Containers of
flammable gases should not be stored or used in the
same room with this water heater.

Hydrogen gas can be produced in an operating water
heater that has not had water drawn from the tank
for a long period of time (generally two weeks or
more). Hydrogen gas is extremely flammable. To
prevent the possibility of injury under these
conditions, we recommend that the water faucet be
opened for several minutes at the kitchen sink before
you use any electrical appliance that is connected to
the hot water system. If hydrogen is present, there
will be unusual sounds such as air escaping through
the pipes as hot water begins to flow. Do not smoke
or have open flame near the faucet at the time it is
open.

Summary of Contents for EGS-I&S-01

Page 1: ...njury or substantial property damage CAUTION Indicates a potentially hazardous situation which if not avoided could result in death serious injury or substantial property damage NOTICE Indicates special instructions on installation operation or maintenance which are important but not related to personal injury hazards WARNING Indicates a potentially hazardous situation which if not avoided may res...

Page 2: ...required for this water heater This water heater meets or exceeds the ASHRAE IES 90 1b standards with respect to insulation and standby loss requirements CAUTION The maximum boiler water supply temperature to the indirect heat exchanger must not exceed 240 F 116 C WARNING It is the responsibility of the installing contractor to see that all controls are correctly installed and are operating proper...

Page 3: ...Pressure Relief Valves and Vacuum Relief Valves The combination temperature and pressure relief valve must be marked with a maximum set pressure not to exceed the maximum working pressure of the water heater The combination temperature and pressure relief valve must also have an hourly rated temperature steam BTU discharge capacity not less than the hourly rating of the water heater The supplied c...

Page 4: ...le formation Setting the water heater temperature at 120 F will reduce the risk of scalds Some states require settings to specific lower temperatures 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 c...

Page 5: ...ot water demand is satisfied This option provides maximum delivery of domestic hot water Priority is recommended when a Boiler net output is 100 000 Btu per hour or less or b When boiler output required to satisfy domestic hot water demand is at least 50 of the boiler output required to satisfy space heating demand or c When an interruption in space heating can be tolerated during a long domestic ...

Page 6: ...Expansion Tank If the water heater is installed in a closed water supply system such as one having a back flow preventer in the cold water line provide thermal expansion control Contact the water supplier or local plumbing inspector for additional information MOVE THE WATER HEATER TO A PERMANENT POSITION BY SLIDING OR WALKING WATER CONNECTIONS WARNING FAILURE TO INSTALL AND MAINTAIN A NEW LISTED T...

Page 7: ... system Pipe and fittings between the boiler and Single wall Indirect must be diameter or larger CAUTION Maximum boiler water supply temperature to the indirect heat exchanger must not exceed 240 F 116 C Figure 1 Water Boiler Piping with Zone Valves Figure 2 Water Boiler Piping with Circulators 2 For a space heating system that utilizes CIRCULATORS refer to Figure 2 The Single wall Indirect connec...

Page 8: ...s shown and screw the aquastat clamp securely in the well groove The aquastat acts as a thermostat for zone control and should be wired accordingly Refer to the boiler or zone control manufacturer s instructions if any additional wiring is required The control is factory set at 120 F and care should be made to not rotate this dial while wiring the control Once electrical connections are complete s...

Page 9: ...g WATER TEMPERATURE ADJUSTMENT 1 The aquastat controls the maximum water temperature in the tank The differential is a fixed 5 F with a 160 F maximum setting set at the factory to 120 F Table 4 details the approximate relationship of water temperature and time with regard to scald injury and may be used as a guide in determining the safest water temperature for your applications 2 For the most ene...

Page 10: ...ecommended size as necessary Do not attempt to repair the valve as this could result in improper operation and a tank explosion In areas with poor water conditions it may be necessary to inspect the temperature relief valve more often than once a year If the temperature pressure relief valve on the heater discharges periodically or continuously it may be due to thermal expansion of water in a clos...

Page 11: ...ater electricity on for the zone containing the Single wall Indirect 4 Sediment Annual but harsh water quality may dictate more frequent service Depending on water conditions a varying amount of sediment may collect in the tank Levels requiring service are indicated by a small temperature difference in the supply and return lines See also Scale below Repeated flushing usually clears such material ...

Page 12: ...r or Clean or replace filter or strainer boiler supply strainer if used Aquastat set too high Lower aquastat setting See Operating Instructions Improper system plumbing Compare to plumbing in Water Connections Improper system wiring Compare to wiring in Electrical Connections Aquastat setting too low Adjust aquastat to higher setting See Operating Instruction Undersized boiler with no Rewire for p...

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