GV90+ gas-fired water boiler — User’s Information Manual

User maintenance procedures (continued)

MONTHLY

Maintenance

PERIODIC

Maintenance

Check condensate system

1.NOTICE — To improve clarity, this illustration of the condensate trap is shown with no air inlet pipe attached. If your boiler has an air pipe connected here, DO NOT tamper with it. The trap is also shown as item m on page 11.

2.Inspect the condensate P-trap (item 1 in the illustration at right). The trap is

translucent. You should be able to see water in the trap as shown.

3. If the trap does not contain water, turn off the boiler ON/OFF switch and call your boiler service technician imme- diately.

4.Item 2 in the illustration is the tubing or

pipe from the boiler condensate outlet to the condensate drain or condensate pump. Inspect this tubing or piping, making sure it is in good condition and not obstructed.

If the condensate trap is dry or the condensate line is damaged or obstructed, there is a risk of flue gas flow into the building. The boiler must not be operated and must be inspected and serviced only by a qualified service technician. Failure to comply with this directive could result in the possibility of severe personal injury, death or substantial property damage.

Check boiler relief valve

1.Inspect the boiler relief valve and the relief valve discharge pipe for signs of weeping or leakage.

2.If the relief valve often weeps, the expansion tank may not be working properly. Immediately contact your qualified service technician to inspect the boiler and system.

Test low water cutoff (if installed)

1.If the system is equipped with a low water cutoff, test the low water cutoff periodically during the heating season, following the low water cutoff manufacturer’s instructions.

Clean vent termination & air intake screens

1.Remove all lint and debris from both the boiler air intake screen and the flue discharge screen.

2.The boiler control module will sense blockage of the air intake or flue and lockout if the blockage is excessive. It will signal the failure by flashing the appropriate indicator lights on the control board.

3.If removing the debris does not allow the boiler to operate correctly afterwards, contact your qualifed service technician to inspect the boiler and vent/air systems.

8

Part number 550-142-055/0411

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Weil-McLain GV90+ manual Periodic, Check condensate system, Check boiler relief valve, Test low water cutoff if installed
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GV90+ specifications

The Weil-McLain GV90+ is a high-efficiency gas boiler designed to meet the heating demands of residential spaces. Renowned for its reliability and superior performance, the GV90+ is ideal for home heating systems that require both efficiency and comfort.

One of the standout features of the GV90+ is its advanced condensing technology. This allows the boiler to recycle exhaust gases, extracting additional heat and maximizing energy usage. With an impressive Annual Fuel Utilization Efficiency (AFUE) rating of up to 90%, the GV90+ significantly reduces energy consumption, lowering heating bills while minimizing environmental impact.

The GV90+ also boasts a versatile design that can be integrated into a variety of heating systems. It is suitable for both hydronic heating applications and combination systems that provide domestic hot water. This adaptability makes it a popular choice for homeowners looking to enhance their existing heating setup or those building new homes.

Built with durability in mind, the GV90+ features a cast aluminum heat exchanger that is not only lightweight but also highly resistant to corrosion. This construction ensures longevity and reduces maintenance needs, thereby providing peace of mind for homeowners. The boiler's compact size further facilitates installation in tight spaces, making it a convenient solution for both new installations and replacements.

The GV90+ is equipped with an intuitive control system that simplifies operation. The integrated electronic ignition removes the need for a standing pilot, enhancing safety and improving reliability. This smart control technology also allows for precise temperature management, ensuring optimal comfort without unnecessary energy consumption.

Another highlight of the GV90+ is its whisper-quiet operation. Designed to minimize noise, this boiler allows homeowners to enjoy a warm and cozy environment without disruptive sounds. Additionally, Weil-McLain has incorporated safety features such as overheat protection and vent safety switches, ensuring the system operates safely within defined parameters.

In conclusion, the Weil-McLain GV90+ sets a high standard in the residential heating market with its exceptional efficiency, innovative technologies, and robust construction. Catering to a range of heating needs, it promises homeowners reliability, comfort, and significant energy savings, making it a wise investment for any home.
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