Weil-McLain Electric Water Heater Verify operation Plus water heater, Operating information

Page 12

PLUS Line Instruction Manual Supplement

PLUS & PLUS WATER HEATERS WITH GAS-FIRED WATER BOILERS

4 Start-up(continued)

[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 depends on actual outlet water temperature versus target temperature.

5.Allow boiler to bring water temperature to target temperature.

[6180] (target temperature reached) The burner will shut down. The blower will run in postpurge (see below), then turn off. The boiler circulator continues to run as long as there is a call for heat.

6.Lower room thermostat to stop call for heat.

[1180] (postpurge) When the room thermostat is satisfied (call for heat ended), the burner turns off. The blower will continue for a 15-second postpurge, then turn off. (If another call for heat occurs, the boiler will remain off for one minute before starting again, and the display will show [6180].)

[0180] (no call for heat) Boiler is now in standby mode (waiting for heat call).

7.Repeat above steps several times to verify operation.

8.Return the room thermostat to normal setting.

Verify operation — PLUS water heater

1.Reconnect PLUS aquastat wiring to boiler if necessary.

2.Turn off power to boiler at service switch.

3.Wait a few seconds, then turn on power to boiler.

[A180] (self-checkon power-up, for a few seconds) [0180] (no call for heat)

4.Raise PLUS aquastat above tank temperature, to call for heat.

[5180] (blower/circulator on) The blower and PLUS circulator energize and the control checks for air flow.

[1180] (prepurge) Blower speed will increase to ignition speed. The blower will run in prepurge for 10 seconds.

[2180] (ignition) After prepurge, the control module opens the gas valve and starts ignition spark.

a.If burner flame proves within 4.5 seconds, burner continues to fire. Burner will fire at start-up rate

— 50% of maximum input — for about 10 seconds to allow flame to stabilize.

b.If burner flame does not prove within 4.5 seconds, control module attempts ignition sequence again. Flame must prove within 5 attempts or control will lockout (display will show [E 02]).

c.Verify flame failure operation by closing boiler manual gas valve to prevent gas flow. Open gas

cock after testing.

[4180] (burner on, PLUS) Once flame is proven and stable, the burner is allowed to modulate. Firing rate depends on actual outlet water temperature versus target temperature.

5.Allow boiler to bring water temperature to target temperature.

[6180] (target temperature reached) The burner will shut down. The blower will run in postpurge (see below), then turn off. The PLUS circulator continues to run as long as there is a call for PLUS heating.

6.Lower PLUS aquastat to stop call for heat.

[1180] (postpurge) When the room thermostat is satisfied (call for heat ended), the burner turns off. The blower will continue for a 15-second postpurge, then turn off. (If another PLUS call for heat occurs, the boiler will begin the heating cycle immediately.)

[8180] (PLUS circulator run-on) The PLUS circulator continues to run for 30 seconds.

[0180] (no call for heat) Boiler is now in standby mode (waiting for heat call).

7.Repeat above steps several times to verify operation.

8.Return the PLUS aquastat to normal setting.

Operating information

1.To check operating conditions (actual and target temperatures, for example), see page 40 in Ultra Boiler Manual for an explanation of the Ultra control module Information mode.

2.During normal operation (no shutdown or lockout), the right 3 display digits show actual boiler outlet water temperature.

Replace boiler jacket front door

Replace boiler jacket front door after installation or servicing. The boiler front door must be securely fastened to the boiler to prevent boiler from drawing air from inside the boiler room. This is particularly important if the boiler is located in the same room as other appliances. Failure to keep the door securely fastened could result in severe personal injury or death.

12

Part number IWHA016A/1103

Page 11 Page 12
Image 12
Page 11 Page 12
Contents Plus Line Contents Hazard definitionsInstall system water piping space heating System water piping methodsBoiler circulator Sizing space heat system pipingZoning with zone valves Connect boiler to system as shown in FigureZoning with circulators Circulator zoning plus optionalInstall boiler-to-water heater piping Combined space heating/water heating applicationsDedicated water-heating only applications Tables 1 First hour ratings in Tables 1 and 2 are based onField wiring Installation must comply withWiring boiler circulator Wiring Plus circulatorWiring a system circulator Routing line voltage wiringOutdoor temperature sensor Low voltage connections FigLow voltage field wiring connections Start-up Verify operation Plus water heater Operating informationReplace boiler jacket front door Lower room thermostat to stop call for heat

Electric Water Heater specifications

The Weil-McLain Electric Water Heater is a standout choice for homeowners seeking reliable hot water solutions with a blend of efficiency and advanced technology. Designed for residential applications, this electric water heater offers a variety of features that cater to both comfort and energy conservation.

One of the key features of the Weil-McLain Electric Water Heater is its robust insulation. This high-density insulation minimizes heat loss, ensuring that the water maintains its temperature for longer periods, which can lead to energy savings over time. The design also features a durable tank, ensuring longevity and reliability, even in harsh water conditions.

Equipped with innovative heating elements, the Weil-McLain Electric Water Heater heats water quickly and efficiently. These elements are designed to provide a consistent flow of hot water, meeting the demands of modern households. Additionally, the heater includes an advanced testing thermostat that provides precise temperature control, ensuring that the water heater operates at optimal levels.

Safety is paramount, and Weil-McLain has incorporated several safety features into its electric water heater. These include an automatic reset function that prevents overheating and various pressure relief mechanisms to ensure the system remains safe under high-pressure conditions.

Moreover, installation of the Weil-McLain Electric Water Heater is designed to be straightforward. The unit is compact, making it suitable for a variety of installation spaces, and its lightweight design aids in transportation and setup. The versatility of this water heater is further enhanced by its compatibility with both standard and alternative energy sources, allowing it to fit into a range of homes and preferences.

The Weil-McLain Electric Water Heater also comes with an impressive warranty, providing peace of mind for homeowners. The warranty covers essential components, ensuring that customers receive reliable service throughout its operational life.

In conclusion, the Weil-McLain Electric Water Heater stands out due to its combination of efficiency, safety, and ease of installation. It is designed to meet the hot water needs of modern homes, while also prioritizing energy savings and long-term reliability. For those in search of a dependable hot water source, the Weil-McLain Electric Water Heater is an excellent choice.
Top Page Image Contents