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GENERAL INFORMATION
Temperature Setting (For Domestic Hot Water Use)
This unit has an adjustable thermostat to control water temperature. The thermostat is factory pre-set at approximately
º
125
F. Households with small children or disabled individuals may require 120
risk of scald injury. Some states may require a lower temperature setting. Check for local requirements governing the
temperature setting. Remember, no water heating system will provide exact temperature at all times. Allow a few days
of operation at this setting to determine the correct temperature setting consistent with your needs.
Note: (1) This water heater, when set at the lower temperature setting, is not capable of producing hot water of suffi-
cient temperature for sanitizing purposes. (2) Higher stored water temperature increases the ability of the water heater
to supply desired quantities of hot water; however it also increases the risk of scald injury.
This equipment is intended to operate in non-condensing condition. Incorrect piping of the cold water supply to the
system may result in condensate formation on the heat exchanger, causing operational problems. Inlet water to the
appliance must not drop below 130
Higher water temperature into the appliance inlet reduces condensate formation. Damage caused by operating in
condensing conditions is not covered by the Manufacturer's warranty.
Operating Temperature Control
An adjustable digital operating control is located in the front control panel. To adjust the set to deliver the desired water
temperature, press and release the Set 1 key on the face of the control. When set point adjustment is enabled, use the
arrow keys to adjust the set point to the desired system temperature. Contact Riverside Hydronics to obtain expanded
digital operating control information (form # 34-80) for more detailed instructions.
High Water Temperature Limit Control
Appliances are equipped with adjustable limit and high limit controls to control the maximum discharge water
temperature. These controls are located inside the upper cabinet, on the right side of the main control panel and are
accessed by removing the jacket top cover. The high limit control on boilers is of the manual reset type and may be
reset by pressing any button on the TempTrac
(manual reset optional). Pressing the TempTrac
has dropped below the set point of the manual reset high limit control.
Warning: Turn off all electrical service to the appliance when accessing the limit or high limit controls located
inside the upper cabinet. The upper cabinet contains High Voltage wiring and terminals. If the electrical
service is not turned off and these terminals are touched, a dangerous shock causing personal injury or loss
of life could occur. Close and fasten the jacket top cover before restoring electrical service to the appliance.
Freeze Protection
Although these units are design certified for outdoor installations - such installations are not recommended in areas
where the danger of freezing exists. Proper freeze protection must be provided for outdoor installations, units installed
in unheated mechanical rooms or where temperatures may drop to the freezing point or lower. If freeze protection is
not provided for the system, a low ambient temperature alarm is recommended for the mechanical room. Damage to
the unit by freezing is not covered by the warranty.
1.
Circulating water through the unit can help prevent freezing. If the system pump does not run continuously, a low
temperature pump switch option is available to energize a circulator pump when low water temperatures are
present.
2.
Freeze protection for a boiler application can be provided by using hydronic system antifreeze, following the
manufacturer's instructions. DO NOT use undiluted or automotive type antifreeze. If the boiler is used as the
energy source for an indirect coil type water heater, follow the indirect coil manufacturer's instructions concerning
the use of potable type antifreeze.
3.
A snow fence, screen or other provisions must be installed to prevent snow and ice accumulation around the
appliance and its venting system.
4.
If for any reason the unit is to be shut off, you must:
a. Shut off water supply.
b. Drain the appliance, pump and piping completely.
5.
A unit may contain water before or after installation for a variety of reasons. Drain all water through the lower inlet
fitting on the appliance, and then drain the remaining water by removing the brass drain plug in the bottom of the
heat exchanger. The drain plug is located between the floor and the bottom of the unit at the rear of the unit,
below the water inlet connection, and can be removed with the use of a box wrench. The unit must be level for all
water to drain.
º
F. See typical installation instructions for piping in low water temperature systems.
®
control. The PRIMERA
®
to reset will not cause the control to reset until the water temperature
15
º
F or lower temperature setting to reduce
®
water heater high limit is of the auto reset type
34-50 04/02/2010
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