Armstrong FLO-RITE-TEMP 415 Installation And Adjustment Instructions
Instantaneous water heater. instructions for single and double wall units
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- Installation and adjustment instructions (17 pages) ,
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Bulletin No. AY-780-L
FLO-RITE-TEMP
INSTANTANEOUS WATER HEATER
INSTALLATION AND ADJUSTMENT INSTRUCTIONS
FOR SINGLE AND DOUBLE WALL UNITS
This bulletin should be used by experienced personnel as a guide to the installation of the
FLO-RITE-TEMP Instantaneous Water heater. Selection or installation of equipment should always
be accompanied by competent technical assistance. You are encouraged to contact Armstrong
International, Inc. or its local sales representative for additional information.
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Summary of Contents for Armstrong FLO-RITE-TEMP 415
- Page 1 This bulletin should be used by experienced personnel as a guide to the installation of the FLO-RITE-TEMP Instantaneous Water heater. Selection or installation of equipment should always be accompanied by competent technical assistance. You are encouraged to contact Armstrong International, Inc. or its local sales representative for additional information.
- Page 2 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.
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Page 3: Water Piping Installation
If an externally piloted pressure reducing valve is To vent start-up air, an Armstrong Thermostatic Air used, the control pipe should be pitched away from Vent is included and installed on the top connection, the PRV and installed at the pressure gauge on the opposite the trap drain connection of the heat shell of the heat exchanger. - Page 4 Expansion tanks should be used for all expansion pressure problems. The relief set point of this valve is 165 psig. Note: The Armstrong Flo-Rite-Temp comes supplied with a 1/4" NPT water pressure relief valve. Note: For hard water applications, pipe pop-off The standard valve has a cracking pressure of valve into a dirt leg.
- Page 5 Option #2 Note: The Armstrong Flo-Rite-Temp comes supplied with a 1/4" NPT water pressure relief valve. The standard valve has a cracking pressure of 165 psig. Installation instructions (See AY-700) are supplied with each heater. The valve is a self relieving and slef seating valve which will open due to thermal expansion or hydrolic shock continous or intermiten discharge of this valve while heater is in service could indicate a system pressure problem.
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Page 6: Adjusting Procedures
IMPORTANT UNIT START-UP AND Option #4 (Available only when a pressure reducing station is installed on the Flo-Rite-Temp). Using the SHUTDOWN PROCEDURES Model GP-2000W1P system, when piped as shown in the Its important to remember that water pressure must Option 4 drawing, will provide a safe dependable shut ALWAYS be greater than steam pressure on the unit to down of the main steam valve when the water pressure avoid boiling the water in the tubes of the heat exchanger. - Page 7 Throttle the bypass valve to drain so that a constant To make the high flow adjustment, SLOWLY increase 3 gpm of flow may pass to drain. the flow of water through the unit to drain while monitoring the outlet thermometer. When the outlet Slowly open steam valve or adjust the pressure temperature has dropped by approximately 10 °F reducing valve to allow 2 - 15 psig of steam pressure...
- Page 8 (IMPORTANT: If, for any reason, you must down (Note: with water pressure on the unit the stem readjust the unit, you will first have to return the should pop back up after depressing it). If the HFT LFT adjustment to the fully closed position as stem will not depress at all the valve is opened too stated in step 8).
- Page 9 FLO-RITE-TEMP Recirculation System Piping and Operation Because of its relatively small size and compact- Three-way Thermostatic Capsule - This ness, the FLO-RITE-TEMP can easily be installed device has a set point roughly 20 degrees below the close to the point of water use eliminating the need for set point of the FLO-RITE-TEMP and will maintain a recirculation system.
- Page 10 FLO-RITE-TEMP-Accumulation System For peak load conditions or to avoid large intermittent steam demands The FLO-RITE-TEMP water heater accumula- In operation, hot water is drawn off the top of the tion system is designed to provide a specified volume tank at the same time as cold water enters from the of accumulated hot water for short duration peak bottom and hot water from the FLO-RITE-TEMP loads or when steam is in short supply and a recovery...
- Page 11 A recirculation system may also The solution is to use the Armstrong Flo-Rite- be incorporated in this system and is especially Temp tankless instantaneous feedforward water...
- Page 12 Single Wall and Double Wall Profile Model 415 and 535 Profile Shown (665 and 8120 valve shows that connections for water inlet and outlet are on opposite sides of the valve body). Fig. 12-1 Table 12-1. Dimensions and Weights Table 12-1. Dimensions & Weights Dimensions Connections Model...
- Page 13 FLO-RITE-TEMP Table 13-1 CAPACITIES AND STEAM LOADS Standard Standard Hot Water Capacities* Steam Capacities Hot Water Capacities* Steam Capacities Inlet Inlet Steam Pressure Steam Pressure Steam Pressure Steam Pressure Temp. Temp. Temp. Temp. Model psig psig psig psig psig psig psig psig °F...
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Page 14: Troubleshooting Guide
TROUBLESHOOTING GUIDE Table 14-1 Problem Causes Solutions The steam is not turned on to the unit. Open steam valve to the unit. The water tubes in the heat exchanger are See Clean-In-Place operating instructions or remove Only cold water plugged. tube bundle and clean. - Page 15 Trap NOTE: Depending on capacity requirements a parallel water heater installation may also require (2) two PRVs in parallel. Single wall installation shown - Double wall would be similar. See your Armstrong Representative for proper reducing valve application. Fig. 15-1...
- Page 16 Clean-In-Place Operating Instructions solution has stopped fizzing and has not changed color, the Flo- When there is a noticeable drop in the Flo-Rite- Rite-Temp is clean. You may save the remaining unspent solution Temp’s — hot water capacity, temperature, or an increased for your next job.
- Page 17 665 Control Valve 8120 Control Valve Listing of Parts Listing of Parts 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...
- Page 18 415 Control Valve 535 Control Valve Listing of Parts Listing of Parts 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...
- Page 19 Notes...
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Page 20: Limited Warranty And Remedy
Armstrong products, notice of any warranty or other claim relating to the products must be given in writing to Armstrong: (i) within 30 days of last day of the applicable warranty period, or (ii) within 30 days of the date of the manifestation of the condition or occurrence giving rise to the claim, whichever is earlier.
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