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8

Installation

Component Location

For best results, the indirect water heater should be in

a central location close to the boiler. This will minimize

heat loss in the boiler piping and reduce wait times for

hot water at the point of use. The indirect water heater

must be protected from freezing temperatures. 

Anode Rods

The use of anode rods is not required for this unit. The

all-stainless steel construction of this tanks minimizes

corrosion. 

Boiler and Circulator Sizing

The ratings published in this manual for your Raypak

indirect water heater can be obtained through proper

selection of boiler output and circulator capacity. See

the performance data in Table C. 

To determine the appropriate circulator for your system,

follow these three steps:

1.

Calculate the pressure drop of all straight pipe and

fittings on the supply and return at the desired flow

rate.

2.

Add the pressure drop from Step 1 to the pressure

drop  through  the  indirect  water  heater  coil  (see

Table C for friction loss) to obtain a total pressure

drop.

3.

Select a circulator pump that will provide adequate

flow at the total pressure drop. A pump performance

curve should accompany every circulator pump.

Temperature & Pressure Relief

Valve

This water heater requires a temperature and pressure

relief valve. The T&P relief valve is supplied by the in-

staller. This relief valve is required for safe operation of

the unit to protect from excessive temperatures and

pressures. A discharge pipe should be installed to the

relief valve. This discharge piping should terminate in a

safe location. This discharge piping must comply with

local and national plumbing codes. The piping must be

rated for 120ºF and 150 PSI.

Plumbing

A tempering valve may be required by local jurisdiction

to protect the user from scalding. Raypak recommends

the use of a tempering valve with this indirect water

heater. The tempering valve limits the water tempera-

ture at the point of use.

If local municipal codes require a backflow preventer,

an expansion tank will be required. The expansion tank

will prevent pressure build-up inside of the indirect water

heater and associated piping. The expansion tank must

be installed in the domestic water piping close to the

tank. No shutoff valve is allowed between the expansion

tank and the indirect water heater.

All water connections made to this heater should be

sealed with thread tape or pipe dope. It is important to

use two pipe wrenches when tightening connections to

this tank. One wrench should be used to support the

tank fitting from rotating; the other wrench will be used

to rotate and tighten the plumbing fitting. It is recom-

mended to use shutoff valves on this tank for servicing.

The shutoff valves should not isolate the relief valve or

expansion tank from the indirect water heater. The inlet

of the heater should be piped with a drain connection

for servicing the heater.

Several piping diagrams are shown below depicting var-

ious installation variations. Use these diagrams (Figs. 3

& 4) to help piping the indirect water heater.

This unit is not supplied with a separate drain fitting. It

is recomended that one be added to the inlet piping. Fig-

ure 2 depicts the drain valve installation.

Cold Water Supply

Fig. 2: Drain Valve Installation

Содержание RSIT30

Страница 1: ...not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas sup plier s instructions If you cannot reach your gas s...

Страница 2: ...2 Rev 1 Changes to New Additions New Deletions None...

Страница 3: ...cation 8 Boiler and Circulator Sizing 8 Temperature Pressure Relief Valve 8 Plumbing 8 Controls 11 START UP 13 Purging the System 13 Flushing the System 13 Checking Circulator 13 Set the Thermostat to...

Страница 4: ...es not answer please contact your local Raypak representative or visit our website at www raypak com Keep this manual with the water heater after installation Local plumbing and electrical codes must...

Страница 5: ...will be re placed in kind only per Raypak s standard warranties Scalding Water Temperature Setting DANGER Safety and energy conservation are factors to be considered when selecting the water temperatu...

Страница 6: ...cial Products 5th ed b The pressure of the heat transfer medium must be limited to a maximum of thirty 30 psig 207kPa by an approved safety or relief valve Freeze Protection The water heater and water...

Страница 7: ...al L First Hour Rating gal hr L hr Continuous Draw Rating gal hr L hr Standby Loss F hr C hr Minimum Boiler Ouptut BTUH kw Coil Length ft m Heating Surface Area Sq ft m2 Heating Coil Flow GPM L min Co...

Страница 8: ...ing should terminate in a safe location This discharge piping must comply with local and national plumbing codes The piping must be rated for 120 F and 150 PSI Plumbing A tempering valve may be requir...

Страница 9: ...BALL VALVE DRAIN TO BOILER COLD INLET HOT OUTLET FROM SYSTEM 12 MAX APART MIX OUTLET MAKE UP WATER TO SYSTEM COLD INLET S5 IND TANK SENSOR FROM BOILER INDIRECT FIRED STORAGE WATER HEATER DRAIN DRAIN F...

Страница 10: ...VALVE T P GAUGE UNION INLET OUTLET UNION UNION MIXING VALVE BALL VALVE PRV BALL VALVE S6 IND SUPPLY SENSOR BOILER PUMP EXPANSION TANK DHW PUMP DRAIN CHECK VALVE PRESSURE GAUGE BALL VALVE UNION BALL V...

Страница 11: ...SA control is pre configured to handle an indirect storage water heater The VERSA control can also be configured to give priority to the domestic hot water or to space heating To connect the unit to a...

Страница 12: ...r always remember that in principle an indirect water heater operates as another heating zone The difference is that when the indirect water heater calls for heat the indirect water heater cir culator...

Страница 13: ...ugh the tank to change the water vol ume at least two times Checking Circulator Check that the circulator or zone valve operates when there is a call for heat When a call for heat is initiated water s...

Страница 14: ...g Replace zone valve Circulator pump not working Check power supply Replace circulator Tank thermostat Thermostat set too low Check thermostat wiring Scale build up Check coil for scale build up Desca...

Страница 15: ...15 Below is a list of the replacement parts for the Stainless Steel Indirect Water Heater IPL diagram showing replacement parts 2 M 1 M 3 M PARTS...

Страница 16: ...lfunctions or failures resulting from failure to install the indirect water heater in accordance with applicable building codes ordinances or good plumbing and electrical trade practices c Damages mal...

Страница 17: ...tion for an in warranty indirect water heater replacement you must provide Raypak with at Raypak s option either the indirect water heater replaced in warranty with the original rating label and all t...

Страница 18: ...18...

Страница 19: ...19...

Страница 20: ...20 www raypak com Raypak Inc 2151 Eastman Avenue Oxnard CA 93030 805 278 5300 Fax 805 278 5468 Litho in U S A...

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