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GV90+ gas-fired water boiler — Boiler Manual 2 1 Integrated boiler control The integrated boiler control (IBC) responds to signals from the room thermostat, air pressure switch, inlet water sensor and boiler limit circuit to operate the circulators, gas valve, igniter and blower. When a room thermostat calls for heat, the IBC starts the
MIXING VALVE. When the supply pressure is higher than 70 PSIG, install a PRESSURE REDUCING VALVE on cold water supply line to prevent water loss through T&P relief valve. A thermal expansion tank is also required. This symbol, where used in this manual, indicates the item is required by Massachusetts code.
boiler limit circuit to operate the boiler circulator, pilot burner, gas valve and inducer. When room thermostat calls for heat, the control module starts the system circulator and inducer.
View and Download Weil-McLain Ultra 3 series user manual online. Gas-fired water boilers Ultra 3 series;. Ultra 3 series boiler pdf manual download. Also for: Ultra 80, Ultra 105, Ultra 155, Ultra 230ж ultra 299, Ultra 399, Plus 60, Plus 40, Plus 80.
(Non-Warranty) - A thermal expansion tank is required if the domestic supply piping includes a backflow preventer or pressure reducing valve. - Ensure the potable water expansion tank is properly sized according to the water heater volume and supply pressure.
power maclean franklin park, il. 60131 tel. (847) 455-0014 fax: (847) 455-0029 paper size drawing number a gd-u604xxx iss revised by: revision date eco # 11411 addison street reliable power products angles x/xx permission **maclean power systems** strictly prohibited except on written dimensions are in: inches tolerances are :.xx +/- .060
Piping overview. THERMAL EXPANSION TANK — If a. backflow preventer, check valve, or pres-sure reducing valve is piped on cold water inlet of water heater, you must install an expansion tank on cold water supply line to prevent normal thermal expansion from repeatedly forcing open T&P relief valve.
