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Check Exhaust Vent and Intake Pipe Terminations
Verify that the boiler exhaust vent and intake pipe terminations are clean and free of obstructions. Remove any debris from the exhaust
vent or intake pipe openings. If removing the debris does not allow the boiler to operate correctly, contact your qualified service
technician to inspect the boiler and the vent system.
Check CH Pressure Gauge
Ensure the pressure reading on the CH gauge does not exceed 30 psig. Higher pressure readings may indicate a problem
with the expansion tank.
Contact a qualified service technician if problem persists.
Check Exhaust Vent and Intake Piping
Visually inspect the exhaust vent for any signs of blockage, leakage, or deterioration of the piping. Inspect the exhaust vent bracing.
Ensure bracing is undamaged and in good condition. Notify a qualified service technician immediately if any problems are found.
Failure to inspect the venting system and have it repaired by a qualified service technician can result in vent system failure, causing
severe personal injury or death.
Visually inspect the intake piping for any signs of blockage. Inspect the entire length of the intake pipe to ensure piping is intact and all
joints are properly sealed. Inspect the intake pipe bracing. Ensure bracing is undamaged and in good condition. Notify a qualified
service technician if any problems are found.
Check Pressure Relief Valve
Visually inspect the primary pressure relief valve and discharge pipe for signs of weeping or leakage.
If the pressure relief valve often weeps, the expansion tank may not be operating properly. Immediately contact a qualified
service technician to inspect the boiler and system.
Check Vent Condensate Drain System
While the boiler is running, check the discharge end of the condensate drain tubing. Ensure no flue gas is leaking from the
condensate drain tubing by holding your fingers near the opening.
If you notice flue gas leaking from the opening, this indicates a dry condensate drain trap. If problem persists, contact a
qualified service technician to inspect the boiler and condensate line and refill the condensate trap.
If applicable, check the condensate neutralizer and ensure it is full of condensate neutralizing marble chips.
Check Primary and Gas Piping
Remove the boiler cover and perform a gas leak inspection following Operating Instructions, page 2, this manual. If gas odor
or leak is detected, follow procedures on page 2. Call a qualified service technician.
Visually inspect for leaks around the internal boiler water connections and around the heat exchanger. Visually inspect the
external system piping, circulators, and system components and fittings. Immediately call a qualified service technician to
repair any leaks.
Have leaks fixed at once by a qualified service technician. Failure to comply could result in substantial property damage, severe
personal injury, or death.
Operate Pressure Relief Valve
Before proceeding, verify that the relief valve outlet has been piped to a safe place of discharge, avoiding any possibility of
scalding from hot water.
To avoid water damage or scalding due to relief valve operation, a discharge line must be connected to the valve outlet and directed to
a safe place of disposal. This discharge line must be installed by a qualified service technician or heating/plumbing installer in
accordance with the boiler installation manual. The discharge line must be terminated so as to eliminate possibility of severe burns or
property damage should the valve discharge.
Read the temperature and pressure gauge to ensure the system is pressurized. Minimum is 10 psi. Maximum is 25 psi. Lift the
relief valve top lever slightly, allowing water to relieve through the valve and discharge piping.
If water flows freely, release the lever and allow the valve to seat. Watch the end of the relief valve discharge pipe to ensure
that the valve does not weep after the line has had time to drain. If the valve weeps, lift the lever again to attempt to clean the
73
WHL-032 REV. 6.2.16
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