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Related Manuals for Armstrong Flo-Rite-Temp FRT8120R
Summary of Contents for Armstrong Flo-Rite-Temp FRT8120R
- Page 1 Flo-Rite-Temp ® IOM-780-N Installation and Operation Manual...
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Page 2: Table Of Contents
Table of Contents Introduction .............................3 Steam Piping Installation ........................10 Water Piping Installation........................11 Pressure Relief (Pop-Off Value) Installation ..................12 Optional Thermostatic Controllers and Safety Equipment ..............13 Start up and Adjusting Procedure Flo-Rite-Temp ................15 Recirculation System Piping and Operation..................17 AMOT Piping (Thermostatic Diverting Valve) RADA Piping (Thermostatic Mixing Valve) Accumulation System Piping ........................18 Tempered Water Systems for Safety Shower/Eye Wash Station ............19... - Page 3 • It is extremely safe because the mixing unit will position to cold water flow upon failure of the primary operating component. The Armstrong Flo-Rite-Temp can easily do the work of a storage tank unit many times its size - at lower installed cost and with minimum maintenance. Even the largest capacity Flo-Rite-Temp requires only 7 square feet (0.63 m2) of floor space.
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Page 4: Introduction
Heat it as you need it. Match your capacity needs with one of the four models of Armstrong’s Flo-Rite-Temp instantaneous water heaters. For an application overview or technical assistance in selecting and installing, contact your Armstrong Representative today. Table 4-1. How Flo-RIte-Temp Scores on Key Benefits... - Page 5 (535/665/8120) Brass (665/8120) Brass Heater Installation NOTE: Flo-Rite-Temp is provided with one Armstrong Steam Trap and Thermostatic Air Vent (shaded). All other items shown not included. Removable/reusable insulation covers for the heat exchangers are available. Contact Armstrong or your local...
- Page 6 Model 415DW and 535DW Profile The DW (double wall) version of the Armstrong Flo-Rite-Temp instantaneous water heater uses a double-walled tube to provide positive separation of the steam and water in the heat exchanger. The area between the walls of the tubes vents to atmosphere so you can detect tube failure without cross- contaminating either the steam or water.
- Page 7 Sizing and Single and Double Wall Flo-Rite-Temp ® Table 7-1. Water and Steam Capacities (Note: Capacities for single-wall and double-wall units are identical.) Water and Steam Capacities (Note: Capacities for single-wall and double-wall units are identical.) Standard Metric Inlet Inlet Hot Water Capacities* Steam Capacities Hot Water Capacities*...
- Page 8 Flo-Rite-Temp SS - 316 Stainless Steel ® Steam Instantaneous Water Heater Note: Heavy duty 5/8” tubes of 16 gauge 316L stainless steel ensure long life and maintainability backed up by a 10-year tube bundle warranty against workmanship and material defects. Control valve is mounted integral to the heat exchanger, thus eliminating intermediate piping leaks.
- Page 9 Flo-Rite-Temp SS Sizing ® Table 9-1. Water and Steam Capacities Water and Steam Capacities (Note: Capacities for single-wall and double-wall units are identical.) (Note: Capacities for single-wall and double-wall units are identical.) Standard Metric Hot Water Steam Capacities Hot Water Capacities* Steam Capacities Inlet Inlet...
- Page 10 The unit includes the mixing valve mounted to the heat exchanger, channel iron and U-bolts mounted, thermostatic air vent installed on the heat exchanger, a water pressure pop off valve integral to the unit control valve and a separate Armstrong Inverted Bucket Steam...
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Page 11: Steam Piping Installation
If 2-15 psig of steam is available a pressure reducing valve is NOT required. If a pressure reducing valve is required, an Armstrong Inverted Bucket Steam Trap is recommended to drain condensate at the inlet of the pressure reducing valve. -
Page 12: Water Piping Installation
Water Piping Installation Figure 12-1 1. The hot and cold pipe should drop a minimum of 18” immediately out of water heater (See Fig. 3-1A). These loops will act as a thermal check valve or heat trap to prevent the conduction of heat through the water from the unit during inactive times. 2. -
Page 13: Pressure Relief (Pop-Off Value) Installation
Pop-Off Valve Installation 1. Thread relief valve into the 1/4” NPT port located on the lower diaphragm half near the spring chamber. See drawing 4-1. 2. Tighten with a 3/4” wrench. Warning: Do Not Over Tighten. Distortion can result causing the relief valve not to seat. Note: The discharge of the relief valve is 1/4”... -
Page 14: Optional Thermostatic Controllers And Safety Equipment
Port C to add sufficient cold water to maintain a constant temperature. (NOTE: The blending valve should be sized to handle the maximum flow of the system). Note: The Armstrong Flo-Rite-Temp comes supplied with a 1/4” NPT water pressure ®... - Page 15 Start-Up and Adjusting Procedure IMPORTANT: UNIT START-UP AND SHUTDOWN PROCEDURES Its important to remember that water pressure must ALWAYS be greater than steam pressure on the unit to avoid boiling the water in the tubes of the heat exchanger. When starting up a Flo-Rite-Temp it is very important that the water supply is turned on to the ®...
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Page 16: Start Up And Adjusting Procedure Flo-Rite-Temp
9. Monitor the outlet temperature on the gauge located in the bypass to drain (see Fig. 3-1B). Place an adjustable wrench on the flats of the low flow adjustment (see Fig. 7-1). Turning clockwise raises the discharge temperature and counter-clockwise lowers the discharge temperature. - Page 17 Start-Up and Adjusting Procedure for Model 535EP, 665SEP, and 812Pop-Off Valve Follow all the steps 1-6 as stated in the adjustment procedures of the model 415. Figure 17-1. 7. Locate the low flow temperature adjustment (LFT) and the high flow temperature adjustment (HFT)on top of the mixing valve hidden under the hex bonnet (See Fig.
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Page 18: Recirculation System Piping And Operation
Flo-Rite-Temp Recirculation System Piping ® and Operation Because of its relatively small size and compactness, the Flo-Rite-Temp can easily be installed close to the point of water use ® eliminating the need for a recirculation system. In applications where water heaters are located in basements or utility rooms and feed an entire building or wing a recirculation system or loop must be utilized to assure instantaneous hot water to all usage points. -
Page 19: Accumulation System Piping
Flo-Rite-Temp Accumulation System ® For peak load conditions or to avoid large intermittent steam demands The Flo-Rite-Temp water heater accumulation system is designed to provide a specified volume of accumulated hot water for short ® duration peak loads or when steam is in short supply and a recovery time can be tolerated. During periods of low or no demand, the water in the accumulator tank is heated to the set point temperature by the Flo-Rite-Temp water heater. -
Page 20: Tempered Water Systems For Safety Shower/Eye Wash Station
F. there is the potential and risk of legionella bacteria forming inside of the tank. Lastly, tank systems are feedback systems which can cause severe overheating of the water when thermostatic elements fail causing personal injury. The solution is to use the Armstrong Flo-Rite-Temp tankless instantaneous feedforward water heater in series with a self-contained fail safe thermostatic mixing valve. -
Page 21: Flo-Rite-Temp Pre-Packaged Systems
Armstrong Hot Water Group at the time the order was placed. All Armstrong Flo-Rite-Temp water heaters are individually tested and can be factory temperature set if ordered as such. If the temper- ature for the application is different that what was ordered, please contact your local Armstrong representative or call (269) 279-3600. -
Page 22: Troubleshooting Guide
Troubleshooting Guide Problem Causes Solutions The steam is not turned on to the unit. Open steam valve to the unit. See Clean-In-Place operating instructions or remove The water tubes in the heat exchanger are plugged. Only cold water tube bundle and clean. comes out of the The differential pressure sensing diaphragm is unit. - Page 23 (Order heat exchanger gasket kit for model number.) Figure 23-1. NOTE: Depending on capacity requirements a parallel water heater installation may also require (2) two PRV’s in parallel. Single wall installation shown - Double wall would be similar. See your Armstrong Representative for proper reducing valve application.
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Page 24: Clean In Place Operation
Clean-In-Place Operating Instructions When there is a noticeable drop in the Flo-Rite-Temp’s — hot water capacity, temperature, or an increased water pressure drop across the unit — tube bundle scale removal should be considered using the commercially available product called RITE-Qwik*. Tube bundle scale removal can be accomplished as follows: Step 1 Shut off steam supply valve #1 to the Flo-Rite-Temp. -
Page 25: Control Valve Parts Listing
Control Valve Parts Listing 8120 Control Valve 665 Control Valve Number Description Number Description Spring Adjustment Spring Adjustment Spring Housing Spring Housing Spring Spring Lower Diaphragm Cover Lower Diaphragm Cover Diaphragm Bolt (12) Diaphragm Bolt (12) Diaphragm Nut (12) Diaphragm Nut (12) Upper Diaphragm Cover Upper Diaphragm Cover O-Ring 2-155... - Page 26 Control Valve Parts Listing 535 Control Valve 415 Control Valve Number Description Number Description Spring Adjustment Spring Adjustment Spring Housing Spring Housing Spring Spring Lower Diaphragm Cover Lower Diaphragm Cover Diaphragm Bolt (12) Diaphragm Bolt (12) Diaphragm Nut (12) Diaphragm Nut (12) Upper Diaphragm Cover Upper Diaphragm Cover O-Ring 2-155...
- Page 27 Armstrong, however caused, and whether such claim is based upon warranty, contract, negligence, strict liability, or any other basis or theory, is limited to Armstrong’s repair or replacement of the part or product, excluding any labor or any other cost to remove or install said part or product, or, at Armstrong’s option, to repayment of the purchase price.
- Page 28 Armstrong International North America • Latin America • India • Europe / Middle East / Africa • China • Pacific Rim armstronginternational.com IOM-780-N 5/14 © 2014 Armstrong International, Inc.