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Weil-McLain Ultra Electric Water Heater manual

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Table of contents for the manual

  • Page 1

    This manual must only be used by a qualified heating installer/service technician. Read all instructions, including the Boiler Manual and other supplements, before installing. Install PL US or Ultra PL US indirect-fir ed water heat er as explained in the PL US Line Manual. Install Ultra boile r as explained in the Ultra Boiler Manual. P erform step[...]

  • Page 2

    Part number IWHA016A/1103 2 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GA S - FIRED W A TER BOILERS Contents The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product. Indicates pr e[...]

  • Page 3

    Part number IWHA016A/1103 3 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GAS - FIRED W A TER BOILERS System water piping methods All piping methods shown in this manual use primary/secondary connection to the boiler loop. These designs ensure proper flow through the Ultra boiler , for the most efficient and reliable [...]

  • Page 4

    Part number IWHA016A/1103 4 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GA S - FIRED W A TER BOILERS Install system water piping (space heating) (continued) 1 Figure 2 Zone valve zoning plus optional water heater piping Zoning with zone valves 1. Connect boiler to system as shown in Figure 2 when zone valve zoning. [...]

  • Page 5

    Part number IWHA016A/1103 5 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GAS - FIRED W A TER BOILERS Install system water piping (space heating) (continued) Figure 3 Circulator zoning plus optional water heater piping Zoning with circulators 1. Connect boiler to system as shown in Figure 3 when circulator zoning. The[...]

  • Page 6

    Part number IWHA016A/1103 6 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GA S - FIRED W A TER BOILERS Install boiler-to -water heater piping 2 Combined space heating/water heating applications 1 . Figure 4 shows recommended piping between Ultra Boiler and PL US water heater . All show direct connection of the water h[...]

  • Page 7

    Part number IWHA016A/1103 7 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GAS - FIRED W A TER BOILERS Notes T ables 1 and 2 T a ble 1 Combined space heating/water heating applications (see Notes) Install boiler-to -water heater piping (contin ued) 2 1. First hour rat ings in T ables 1 and 2 are based on: • 115°F or[...]

  • Page 8

    Part number IWHA016A/1103 8 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GA S - FIRED W A TER BOILERS Figure 7 Line voltage field wiring connections (service switch provided b y installer) Field wiring 3 ELECTRICAL SHOCK HAZARD — Fo r your saf et y , t urn off electrical p o wer supply at service entrance panel bef[...]

  • Page 9

    Part number IWHA016A/1103 9 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GAS - FIRED W A TER BOILERS Wiring a system circulator 1 . For combined systems, to activate a system circulator when the Boiler circulator operates, wire as shown at bottom of Figure 7, page 8. 2. Y ou must install a relay as shown. DO NO T wir[...]

  • Page 10

    Part number IWHA016A/1103 10 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GA S - FIRED W A TER BOILERS Field wiring (continued) 3 Figure 9 Low voltage field wiring connections Summer/winter switch (item 7) — Install a summer/winter switch, if desired, to disable the boiler (space heating) circulator during non-heat[...]

  • Page 11

    Part number IWHA016A/1103 11 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GAS - FIRED W A TER BOILERS Start -up 4 Follow Boiler Manual procedures 1. Follow all procedures in the boiler manual to start up and verify o peration of the boiler . Set space heating operation Verify space heating mode 1. Press the “Mode ?[...]

  • Page 12

    Part number IWHA016A/1103 12 PLUS Line Instruction Manual Supplement PLUS & PLUS WA TER HEA TERS WITH GA S - FIRED W A TER BOILERS 4 [ 3180 ] ( burner on, space heating ) Once flame is proven and stable, the burner turns down to low fire for approximately 2 minutes. • After this low fire period, the burner is allowed to modulate. Firing rate [...]