GRUNDFOS INSTRUCTIONS Installation and Operation COMFORT PUMP
COMFORT PUMP H max. recommende = 4.9 [ ft ] Maximum recommended System Head = 4.9 feet The circulator may not be used to pump flammable or corrosive liquids.
COMFORT PUMP The base base packing packing The material is designe material is designed to be re-used to to be re-used to insulate the pump insulate the pump housing. housing.
COMFORT PUMP t1 t2 t1 => t2 t1 t2 2 0 20 20 C° 40 40 65 40 80 40 95 40 t1 t2 36 32 68 68 F° 105 150 105 105 175 105 204 105 The liquid temperature must always be greater than the ambient temperature to avoid condensation. The table shows the maximum allowed ambient temperature for a given liquid temperature. The maximum allowable fluid temperature is 204 deg F. CAUTION: During operation the pump may be too hot to touch.
COMFORT PUMP It is preferred that the circulator always remains in a horizontal position. It is acceptable for the circulator to be mounted under the piping in a vertical position. The circulator cannot be mounted over the piping in a vertical position. It is also preferred that the power cord be located under the circulator.
COMFORT PUMP If it is necessary to rotate the circulator head to relocate the power cord under the circulator, please follow the steps below. 1.1.Isolate the circulator from the system water pressure by closing the valves on either side of the circulator. If the circulator cannot be isolated, it will be necessary to turn off the main water supply. 2. 2. CAUTION: If operated recently the circulator body may be hot. Check before touching. 1 2 1 1 3 3.3.
COMFORT PUMP When the circulator is operating properly it is almost noiseless. An integrated power indicator (green LED) identifies when power is supplied to the circulator. The circulator is on when the green LED is illuminated. If the circulator is noisy there may be air trapped in the system. To purge the air from the circulator turn the circulator off and on five times. To purge the air from the system open a faucet until all the air in the line has escaped. The circulator should now run quietly.
COMFORT PUMP The timer is a 24-hour AM/PM timer with 20-minute interval. For ease of programming the timer head can be swiveled stop to stop almost 360 degrees. To program the timer: 1. Using a small flatblade screwdriver remove the clear plastic cover from the timer. 2. The time of day is set by turning the programming ring in the direction of the arrow (clockwise) until the correct time is aligned to the arrowhead beneath the clock symbol. 3.
COMFORT PUMP 1 2 3 ON 4 OFF ON 5 OFF 6 9
COMFORT PUMP The aquastat is an integrated adjustable thermostat controlled by the temperature dial. The aquastat allows the circulator to automatically turn off (the green LED is off) when the water temperature passing through the circulator housing reaches the dial setting selected between 95 deg F and 150 deg F. The circulator will automatically turn back on (the green LED is on) when the water temperature cools down 12 deg F. Setting the aquastat: 1. The factory preset dial position is 95 deg F. 2.
COMFORT PUMP 1 3 2 65°C 150°F 4 35°C 95°F 35°C 95°F 65°C 150°F 65°C 150°F 35°C 95°F 5 65°C 150°F 6 35°C 95°F 11
COMFORT PUMP When the timer and thermostatic controls are used together, the circulator operates ONLY at the programmed timer settings AND ONLY when the temperature conditions of the aquastat have not been met. Examples: With the timer programming tabs in the off position the circulator is off (green LED is off) regardless of the system temperature and aquastat function.
COMFORT PUMP 13
COMFORT PUMP In the unlikely event that instant hot water is not available, the circulator impeller may be blocked by calcium/sediment deposits. Follow these steps to clean the impeller: 1. Isolate the circulator from the system water pressure by closing the valves on either side of the circulator. If the circulator cannot be isolated, it will be necessary to turn off the main water supply. 2. Turn off the power supply. 3. Loosen the brass ring holding the circulator head to the pump housing.
COMFORT PUMP 1 2 3 4 5 6 7 8 Sound pressure level The sound pressure level of the pump is lower than 43 dB(A).
Limited Warranty Products manufactured by GRUNDFOS PUMPS CORPORATION (GRUNDFOS) are warranted to the original user only to be free of defects in material and workmanship for a period of 24 months from date of installation, but not more than 30 months from date of manufacture. GRUNDFOS' liability under this warranty shall be limited to repairing or replacing at GRUNDFOS' option, without charge, F.O.B. GRUNDFOS' factory or authorized service station, any product of GRUNDFOS manufacture.
