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VELOCITY LOGO CMYK COLORS

Mega-Stor

®

 II

Stainless Steel, Indirect Water Heaters

INSTALLATION AND OPERATING INSTRUCTIONS

 

CAUTION

1. The heat transfer-medium must be water or other nontoxic fluid having a        

toxicity rating or Class of 1, as listed in 

Clinical Toxicology of Commercial 

Products

, 5th edition.

2. The pressure of the heat transfer medium must be limited to a maximum of 

30 PSIG by an approved safety or relief valve.

Velocity Boiler Works, LLC

P.O. Box 14818

3633 I Street

Philadelphia, PA  19134

www.velocityboilerworks.com

5003502

980155 Rev C - 02/18

Содержание Mega-Stor II

Страница 1: ...c fluid having a toxicity rating or Class of 1 as listed in Clinical Toxicology of Commercial Products 5th edition 2 The pressure of the heat transfer medium must be limited to a maximum of 30 PSIG by an approved safety or relief valve Velocity Boiler Works LLC P O Box 14818 3633 I Street Philadelphia PA 19134 www velocityboilerworks com 5003502 980155 Rev C 02 18 ...

Страница 2: ...2 ...

Страница 3: ... to bring attention to the presence of hazards of various risk levels or to important information concerning product life The City of New York requires a Licensed Master Plumber supervise the installation of this product The Commonwealth of Massachusetts requires this product to be installed by a Licensed Plumber DANGER Indicates an imminently hazardous situation which if not avoided will result i...

Страница 4: ...ndirect water heater contains very hot water under high pressure Do not unscrew any pipe fittings nor attempt to disconnect any components without positively assuring the water is cool and has no pressure Always wear protective clothing and equipment when installing starting up or servicing this product to prevent scald injuries Do not rely on the pressure or temperature gauges to determine the te...

Страница 5: ...r this indirect water heater may freeze and cause extensive property damage Do not leave the heating system unattended during cold weather unless alarms or other safeguards are in place to prevent such damage WARNINGS FOR THE HOMEOWNER 83 50 3 158 75 216 50 DANGER BURN HOT Products 5th Edition A B C D 8 7 6 5 can cause severe burns Feel water before bathing or available see manual Children disable...

Страница 6: ...ns 5 III Before Starting Installation 7 IV Locating The Indirect Water Heater 7 V Piping 8 A Boiler Side Piping 8 B Domestic Piping 11 VI Wiring 15 VII Start up and Check out 17 VIII Maintenance 18 IX Parts 19 Appendix A Indirect Water Heater Sizing 20 ...

Страница 7: ...inical Toxicology of Commercial Products latest edition 4 The heat source must be used in accordance with its manufacturer s instructions and those of the authority having jurisdic tion IMPORTANT NOTE All models have a stored volume of less than 120 Gallons When installed in accordance with these instructions stored potable water temperature in the tank is limited to a value of 210F or less by a t...

Страница 8: ...Weight A B C D E Net Full MS2 030 30 1 33 1 8 6 1 8 10 1 2 21 1 8 69 328 MS2 040 37 9 39 3 8 6 1 8 10 1 2 24 1 4 82 407 MS2 050 50 6 49 3 4 6 1 8 10 1 2 26 5 8 112 545 MS2 075 74 0 68 3 4 6 1 8 10 1 2 29 3 8 146 777 MS2 119 111 3 62 7 8 10 1 4 12 1 2 44 48 3 8 251 1217 TABLE 2 3 PHYSICAL SPECIFICATIONS FIGURE 2 2 MEGA STOR II INDIRECT WATER HEATER MS2 030 THRU MS2 075 HOT WATER OUT T P VALVE TO BO...

Страница 9: ... is highly susceptible to water damage install the IWH in a pan with a drain 3 The IWH may be located some distance from the boiler provided the zone system is designed to provide the flow called for in Table 2 1 through the coil Also the further the IWH is from the boiler the longer the response of the boiler will be to a call from the IWH thermostat If long runs exist between the boiler and IWH ...

Страница 10: ...f circulators pipe size and equivalent length that will result in the flow rates called for in Table 2 1 FIGURE 5 1 BOILER SIDE PIPING USING CIRCULATOR ZONES CAUTION 1 The heat transfer medium must be water or other nontoxic fluid having a toxicity rating or Class of 1 as listed in Clinical Toxicology of Commercial Products 5th edition 2 The pressure of the heat transfer medium must be limited to ...

Страница 11: ...hown in Figure 5 4 calculation of equivalent length is exactly the same as shown above except that IWH loop is the shaded piping in Figure 5 4 i e the IWH loop does not pass through the boiler Example A 40 gallon IWH is to be installed in the IWH loop piping shown in Figure 5 1 shaded The cast iron boiler has a negligible pressure drop The loop consists of the following pipe and fittings Qty Size ...

Страница 12: ...te Valve Open 0 7 0 8 Full Port Ball Valve 0 7 0 8 Swing Check Valve 7 0 10 0 Zone Valve 3 5 Cv Not Recommended Zone Valve 8 0 Cv 46 1 Air Scoop 3 0 8 0 TABLE 5 3 EQUIVALENT LENGTHS FOR SELECT VALVES AND FITTINGS MAY BE USED FOR COPPER OR THREADED FITTINGS FIGURE 5 4 PRIMARY SECONDARY PIPING OF INDIRECT WATER HEATER ...

Страница 13: ...he IWH in the event that this is necessary f Drain Required Used to drain the IWH for inspection or servicing This drain valve is supplied by the installer For models MS2 030 through MS2 075 install this valve in the cold water supply where it can be used to drain the tank A dedicated drain valve connection is provided on the MS2 119 g Temperature Pressure Relief Valve T P Valve Required Opens to ...

Страница 14: ... the outlet water temperature to rise significantly above the control setting The temperature of water going to the fixtures may be more carefully controlled through the use of a thermostatic mixing valve This device blends a controlled amount of cold water with the hot water leaving the IWH so that water at a more constant temperature exits the mixing valve Typical thermostatic mixing valve pipin...

Страница 15: ...040 100 000 133 700 MS2 050 100 000 156 300 MS2 075 115 000 195 600 MS2 119 199 900 Note 1 1 Not permitted unless the combined output of all boilers connected to this indirect water heater is less than 200 000 BTU hr If this condition is met install a T P valve having a capacity of 200 000 BTU hr 2 Maximum T P Valve Pressure Setting 150 psi 3 Maximum T P Valve Pressure Setting 210 F TABLE 5 7 MINI...

Страница 16: ... for such service Install in accordance with their manufacturer s instructions FIGURE5 8 DOMESTICHOTWATERPIPINGUSINGAMIXINGVALVE CAUTION Do not attempt to use the anode rod tapping to make field connections of any type Attempts to do so may result in unreliable operation or premature tank failure ...

Страница 17: ... 1 is a connections diagram for a non priority circulator zone system using Honeywell R845A s The R845A is equipped with two sets of contacts 3 4 and 5 6 which become made when the T and T terminals are made Terminals 1 and 2 on the R845A are supplied with 120 VAC to power its internal transformer In this application one R845A is provided for each zone including that of the IWH When any thermostat...

Страница 18: ...lts in the application of 24 volts across the motor in that zone s zone valve This drives open the zone valve When the valve has opened the endswitch in that zone valve makes and brings on the boiler FIGURE 6 2 ZONE VALVE WIRING WARNING Regardless of the control system selected the L4080B on the indirect water heater must be the only control that will permit boiler water to flow through the indire...

Страница 19: ... energy efficient operation adjust the control for the minimum water temperature necessary to meet domestic water needs Because hot water presents a scald hazard it is best to set the control at 120ºF or lower and raise it only if necessary to provide adequate hot water See Table 7 2 for more information about scalding a Adjust the dial shown in Figure 7 1 until the desired temperature setting on ...

Страница 20: ...f there is an oil lubricated circulator in the system make sure that it is lubricated as called for by the circulator manufacturer FIGURE 7 1 TEMPERATURE CONTROL APPROXIMATE TIME TEMPERATURE RELATIONSHIPS FOR SCALDING 120 F More than 5 minutes 125 F 1 1 2 to 2 minutes 130 F About 30 seconds 135 F About 10 seconds 140 F Less than 5 seconds 145 F Less than 3 seconds 150 F About 1 1 2 seconds 155 F A...

Страница 21: ...1 MEGA STORII The IWH depends upon the boiler for a source of heat and is therefore only as reliable as the boiler Make sure that the boiler is maintained in accordance with the boiler manufacturer s instructions If a water treatment system is required to keep the water chemistry within the parameters shown in page 7 make sure that this system is properly maintained ...

Страница 22: ...ethod to determine the domestic hot water demand such as that shown in the Service Water Heating chap ter of the ASHRAE Applications Handbook Then use the data provided in Tables 2 1 A 2 and A 3 to select the boiler and IWH Table A 1 Indirect Water Heater Sizing for Typical One and Two Family Units a b c d e Number of Bathrooms Number of Bed rooms Model First Hour Requirement GPH Min Boiler Output...

Страница 23: ... Table 3 3 AHRI First Draw Rating a b c Model Draw Rate GPM First Draw Rating Gal MS2 030 2 3 23 MS2 040 2 7 31 MS2 050 3 2 44 MS2 075 3 9 69 MS2 119 6 9 81 First Draw Rating is the amount of stored water available from a fully recovered indirect water heater with no boiler output during the draw before the outlet temperature falls by 25F At draw rates higher than that shown in column b less store...

Страница 24: ...place at its option the water heater It is expressly agreed between Velocity Boiler Works LLC and the original consumer purchaser that repair or replacement are the exclusive remedies of the original consumer purchaser THIS WARRANTY DOES NOT COVER Any component parts that are part of the indirect fired water heater system but not furnished by Velocity Boiler Works LLC as part of the residential in...

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