Hydro Smart 115 PLUS, Инструкция по установке и руководство пользователя

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-Pressure relie f valve- (DHW Applications)
The boiler has a high-temperature shuto ff switch built in as a standard safety feature (called a
Hi-Limit switch). Therefore, a
“pressure only”
relief valve is required.
ELECTRICAL CONNECTIONS
• This unit does not come with an approved pressure relief valve.
• An approved pressure relief valve must be installed on the hot water outlet.
• The pressure relief valve must conform to the current edition of
ANSI Z21.22
or
CAN 1-4.4
and instal-
la tion must follow local codes.
• The discharge capacity must be at least 140,000 BTU/h for DHW applications.
• The pressure relief valve must be rated for a maximum of 150 psi (1 MPa).
• The discharge piping for the pressure relief valve must be directed so that the hot water cannot splash
on anyone or on nearby equipment.
• A tt ach the discharge tube to the pressure relief valve and run the end of the tube to within 6 in.
(152 mm) from the floo r. This discharge tube must allow free and complete drainage without any
res trictions.
• If the pressure relief valve installed on the water heater discharges periodically, this may be due to a
def ecti ve thermal expansion tank or def ecti ve pressure relief valve.
• The pressure relief valve must be manually operated periodically to check for correct opera tion.
WARNING! Hot water will be released. The contact of discharge may cause property damage and/
or bodily harm. Before opera ting the pressure relief valve manually, check that it will discharge in
a safe place. If water does not fl ow freely from the end of the discharge pipe, turn the gas supply
OFF and call a qualified person to determine the cause.
• No valve shall be placed between the relief valve and the water heater.
WARNING
• Ensure that circuit power is turned OFF before you complete the following steps.
• Follow the electrical code requirements of the local authority having jurisdiction.
In the absence of such requirements, follow the current edition of the Na tional
Electrical Code ANSI/NFPA 70 in the U.S. or the current edition of CSA C22.1 Canadian
Electrical Code Part 1 in Canada
• When servicing or replacing parts within the water heater, label all wires prior to dis
-
c onnection to facilitate an easy and error-free rec onnection. Wiring errors can cause
improper and dangerous opera tion. Verify proper opera tion a ft er servicing.
• Failure to follow these ins tructions can result in fi re, electrical shock, or death.
NOTE: Hydro Smart Radiant Panel systems include a pressure relief valve for the radiant application.