RESIDENTIAL GAS WATER HEATERS OWNER'S MANUAL Power Vented Gas Models FPSH/FPCR/FPST Thank you for buying this energy efficient water heater from A.O. Smith Water Products Company. We appreciate your confidence in our products. with SmartValveTM, Hot Surface Ignition & 2” PVC Vent Capability You should thoroughly read this manual before installation and/ or operation of this water heater.
GET TO KNOW YOUR WATER HEATER REPLACEMENT PARTS AND DELIMING PRODUCTS (A) (B) (C) (D) (E) (F) (G) Replacement parts and recommended delimer may be ordered through authorized servicers or distributors. Refer to the Yellow Pages for your A. O. Smith plumber or contact the A. O. Smith Water Products Company, 5621 W. 115th Street, Alsip, IL 60803, 1-800-433-2545. When ordering parts, provide complete model and serial numbers (see rating plate), quantity and name of part desired (as listed in Figure 1).
suspected, do not attempt to find the cause yourself. Go to a neighbor's house, leaving your doors open to ventilate the house, then call your gas supplier or service agent. Keep area clear until a service call has been made. GENERAL SAFETY INFORMATION At times you may not be able to smell an LP gas leak. One cause is odor fade, which is a loss of the chemical odorant that gives LP gas its distinctive smell.
UNCONFINED SPACE INSTALLATION In buildings of conventional frame, brick or stone construction, unconfined spaces may provide adequate air for combustion, ventilation, and dilution air for power venter. REQUIRED ABILITY If the unconfined space is within a building of tight construction (as defined in the most recent revision of the National Fuel Gas Code Handbook), air for combustion, ventilation, and venter dilution must be obtained from outdoors.
THE HEATER SHOULD BE LOCATED IN AN AREA WHERE LEAKAGE OF THE TANK OR CONNECTIONS WILL NOT RESULT IN DAMAGE TO THE AREA ADJACENT TO THE HEATER OR TO LOWER FLOORS OF THE STRUCTURE. When such locations cannot be avoided, a suitable drain pan should be installed under the heater, see fig. 1. The pan should have a minimum length and width of at least 2 inches greater than the diameter of the heater and should be piped to an adequate drain.
3. The venting system shall terminate at least 4 feet below, 4 feet horizontally from or, 1 foot above any door, window or gravity air inlet into any building. The manufacturer also recommends that the vent termination should not be installed closer than 3 feet from an inside corner of an L shaped structure and not be less than 1 foot above grade. BEFORE PLACING THE HEATER IN OPERATION, CHECK FOR GAS LEAKAGE. USE SOAP AND WATER SOLUTION OR OTHER MATERIAL ACCEPTABLE FOR THIS PURPOSE.
WARNING VENT HOOD(S) MAY BE EXTREMELY HOT DURING OPERATION FIGURE 3 SEQUENCE OF INSTALLATION This unit can vent through two (2) or three (3) inch PVC pipe and fittings. The vent terminal supplied with the unit must be used for both two or three inch pipe. The vent pipe installation can be started from either the blower discharge or the termination wall. Keep in mind the total vent system (pipe and elbows) when installing the vent system. (SEE VENT CHART ON PAGES 9-10.) 1.
INSTALLATION OF VENT SYSTEM THIS UNIT IS MANUFACTURED WITH AN EXTERNAL CONTROL HARNESS FOR EASIER REPLACEMENT IF THE HARNESS OR CONNECTORS GET DAMAGED. (Refer to Figures 3, 4, 5,7 and 8 as guides). 1. Plan the route of the vent system from the discharge of the blower to the planned location of the vent terminal. Layout the total vent system to use minimum of vent pipe and elbows. 6. Do not plug in power cord until vent system is completely installed.
TABLE FOR VENT PIPE LENGTH FOR FPSH/FPCR UNITS TWO INCH DIAMETER PIPE **Number of 90° Elbows One (1) One (1) Two (2) Two (2) Three (3) Three (3) Four (4) Four (4) **Number of 45° Elbows None One (1) None One (1) None One (1) None One (1) Minimum Pipe Maximum Pipe 2 Ft. 1 Ft. 1 Ft. 1 Ft. 1 Ft. 1 Ft. 1 Ft. 1 Ft. 46 Ft. 42 Ft. 38 Ft. 34 Ft. 30 Ft. 26 Ft. 22 Ft. 18 Ft.
through the drain in the bottom of the housing. A plastic tube is furnished for the condensate to be drained away from the water heater. A method to keep the condensate from draining back to the blower, in a horizontal run, is to install the pipe with a slight downward slope. The pipe can slope 1/4 inch per five (5) feet of pipe, but no more than 1.5 inches in the total vent length. VENT PIPE PREPARATION 1. INITIAL PREPARATION A.
APPLICATORS Select a suitable pure bristle type paint brush. Use a proper width brush or roller to apply the primer and cement (see chart below). Speedy application of cement is important due to its fast drying characteristics. IMPORTANT NOTE: A dauber type applicator should only be used on pipe sizes 2" and below. For larger diameter pipe, a brush or roller must be used. RECOMMENDED BRUSH* SIZE FOR PRIMER AND CEMENT APPLICATIONS Nominal Pipe SizeBrush Width (IPS) (INS.
F. Joint assembly Working quickly, insert the pipe into the fitting socket bottom and give the pipe or fitting a 1/4" turn to evenly distribute the cement. Do not continue to rotate the pipe after it has hit the bottom of the fitting socket. A good joint will have sufficient cement to make a bead all the way around the outside of the fitting hub. The fitting will have a tendency to slide back while the cement is still wet so hold the joint together for about 15 seconds.
FOR YOUR SAFETY READ BEFORE OPERATING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. BEFORE OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES. A. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do NOT try to light the pilot by hand. B. BEFORE OPERATING smell all around the appliance area for gas.
Temperature Setting VERY HOT= approx. 160*F C = approx. 150*F B = approx. 140*F A = approx. 130*F HOT = approx. 120*F LOW = approx. 80*F Time to Produce 2nd & 3rd Degree Burns on Adult Skin About 1/2 second About 1-1/2 seconds Less than 5 seconds About 30 seconds More than 5 minutes ---------------- FIGURE 9 Valves for reducing the point-of-use temperature by mixing cold and hot water are available. See figure 2.
MAINTENANCE WARNING should be checked periodically for any accumulation of dust and lint. Any build up of dirt in the screen can result in insufficient dilution air and excessive vent temperatures that could cause heat damage to the PVC pipe. The venter must be inspected four times a year. Points of inspection are: DISCONNECT FROM ELECTRICAL SUPPLY BEFORE SERVICING UNIT. 1. MOTOR - Motor must rotate freely. FOR YOUR SAFETY, WATER HEATER SERVICE SHOULD BE PERFORMED ONLY BY A QUALIFIED SERVICE TECHNICIAN.
forming droplets, these drip into the fire or run out on the floor. This is common at the time of startup after installation, during periods of time when incoming water is very cold, or the heater may be undersized for the requirements. CATHODIC PROTECTION - ANODE (FIG. 1) The anode rod within the tank is designed to be slowly consumed cathodically, minimizing corrosion in the glass lined tank. A hydrogen sulfide (rotten egg) odor may result if water contains high sulfate and/or minerals.
TROUBLE SHOOTING (Continued) PROBLEM CAUSE SOLUTION 1) Blower will not run. NOT ENOUGH HOT WATER A) “ON/OFF” control switch turned off. B) Blower unplugged. C) No power at outlet. D) Thermostat defective. E) Control harness defective. F) High limit control circuit open. G) Blower motor defective. Thermosat problems. A) Themostat set too low. B) Thermostat or ECO defective. Others A) Heater undersized. B) Low gas pressure. C) Incoming water is unusually cold. D) Leaking hot water pipes or fixtures.
LIMITED RESIDENTIAL GAS WARRANTY THIS WARRANTY IS APPLICABLE TO THE ORIGINAL OWNER ONLY. If the glass lined tank in this water heater shall prove upon examination by A. O. Smith Corporation (the warrantor) to have leaked during the warranty period in normal residential use, due to natural corrosion from potable water therein, the warrantor will furnish the ORIGINAL OWNER a replacement A. O.
