Raypak RSIT30, RSIT50, RSIT65, RSIT80, RSIT115 Installation & Operating Instructions Manual
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INSTALLATION & OPERATING
INSTRUCTIONS
Stainless Steel
Indirect Fired
Storage Water
Heater
Model RSIT30-
RSIT115
WARNING: If these instructions are not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of
this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do 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 supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency or
the gas supplier.
This manual should be maintained in legible condition and kept adjacent to the heater or in a safe place for future reference.
CATALOG NO. 3400.59 Effective: 06-01-17 Replaces: New P/N 241673 Rev. 1
Rev. 1
Changes to: New
Additions: New
Deletions: None
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CONTENTS
INTRODUCTION ...............................4
SAFETY WARNINGS ........................4
Scalding ......................................................5
Single Wall Heat Exchanger........................6
Freeze Protection........................................6
SPECIFICATION PERFORMANCE
DATA ................................................7
Installation ...................................................8
Component Location ...................................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 the Desired
Temperature. .............................................13
Verify the Boiler Functionality....................13
Check the Water Temperature ..................13
MAINTENANCE &
TROUBLESHOOTING .....................14
PARTS ............................................15
WARRANTY....................................16
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INTRODUCTION
The Raypak indirect water heater uses heat from a boiler to heat domestic water. The heat is transferred to the
water by a coil heat exchanger inside of the tank. The indirect storage tank stores the energy from the boiler for
use later. With the excellent thermal insulation in the Raypak water heater, the boiler turns on and off less often.
To maintain energy efficiency the stainless steel tank is fully insulated with 2 inches of rigid foam. The Raypak indirect water heater is an efficient means of heating water.
This indirect water heater has all stainless steel construction. The stainless steel tank is fully welded, pickled and
passivated. The stainless steel resists corrosion assuring a long service life.
SAFETY WARNINGS
WARNING: Improper installation, adjustment,
alteration, service or maintenance can cause serious
injury or property damage. Refer to this manual. For
assistance or additional information, consult a
qualified installer or service agency.
CAUTION: The recommended water temperature
for normal residential use is 120°F. The control
temperature setting does not always reflect the
outlet water temperature, which could occasionally
exceed 120°F. The variation in outlet temperature
could be based on factors including but not limited to
usage patterns and type of installation. Test your
water at the tap nearest to the indirect water heater.
WARNING: Hotter water increases the risk of scald
injury. Before adjusting the water temperature
setting, read this instruction manual. Temperatures
at which injury occurs vary with the person’s age and
the length of exposure.
The slower reaction time of children, elderly, and
physically or mentally-challenged persons increases
the scalding hazard to them. It is recommended that
lower water temperatures be used where these
exposure hazards exist. Such households may
require a temperature setting less than 120°F to
prevent accidental contact with hot water.
To lower water temperature, use point-of-use
temperature limiting devices.
warranty does not apply to units that have been improperly installed or operated. (Refer to the warranty at the
back of this manual.) Installation and service must be
performed by a qualified installer, or service agency. If,
after reviewing this manual, you still have questions
which this manual does 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 be followed
in the installation of this indirect water heater. In the absence of a local code, use the UNIFORM PLUMBING
CODE and the NFPA Code. Local codes may supersede instructions in this installation manual.
Thank you for purchasing a Raypak® product. We hope
you will be satisfied with the high quality and durability
of our equipment.
Product Receipt
On receipt of your unit it is suggested that you visually
check for external damage to the shipping carton. If the
carton is damaged, make a note to that effect on the Bill
of Lading when signing for the shipment. Next, remove
the water heater from the carton. Report any damage
to the carrier immediately.
On occasion, items are shipped loose. Be sure that you
receive the correct number of packages as indicated on
the Bill of Lading.
BEFORE INSTALLATION
Raypak strongly recommends that this manual be reviewed thoroughly before installing your Indirect Fired
Storage Water Heater. Please review the General
Safety information before installing the unit. Factory
Claims for shortages and damages must be filed with
the carrier by consignee. Permission to return goods
must be received from the factory prior to shipping.
Goods returned to the factory without an authorized Returned Goods Receipt number will not be accepted. All
returned goods are subject to a restocking charge.
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When ordering parts, you must specify the model and
Water temperature over 125°F can
cause instant se ve re burns or death
from scalds.
Children, disabled, and elderly are
at highest risk of being scalded.
See instruction manual before setting temperature at water heater.
Feel water before bathing or showering.
Temperature limiting valves are
available, see manual.
serial number of the water heater. When ordering under
warranty conditions, you must also specify the date of
installation.
Purchased parts are subject to replacement only under
the manufacturer’s warranty. Debits for defective replacement parts will not be accepted. Parts will be replaced in kind only per Raypak’s standard warranties.
Water Temp Time to Produce Serious Burn
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
Scalding
Water Temperature Setting
DANGER: Safety and energy conservation are
factors to be considered when selecting the water
temperature setting of a water heater’s temperature
control. Water temperatures above 125°F can cause
severe burns or death from scalding. Be sure to read
and follow the warnings outlined on the label
pictured below. This label is also located on the
water heater.
145°F Less than 3 seconds
150°F About 1-1/2 seconds
155°F About 1 second
Table courtesy of The Shriners Burn Institute.
Table A: Time To Produce Serious Burn
CAUTION: The recommended water temperature
setting for normal residential use is 120°F (49°C).
Time/Temperature Relationships in Scalds
The chart shown above may be used as a guide in determining the proper water temperature for your home.
DANGER: Households with small children,
disabled, or elderly persons may require a 120°F or
lower control (thermostat) setting to prevent contact
with HOT water.
Maximum water temperatures occur just after the boiler
has shut off. To find the water temperature being delivered, turn on a hot water faucet, place a thermometer
in the water stream and read the temperature.
NOTICE: Mixing valves are available for reducing
point-of-use water temperature by mixing hot and
cold water in branch water lines. Contact a licensed
plumber or the local plumbing authority for further
information.
DANGER: Hotter water increases the potential for
Hot Water SCALDS.
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Single-Wall Heat Exchanger
Freeze Protection
This Indirect fired water heater uses a single-wall heat
exchanger. In order for this water heater to meet the re-
uirements of the Uniform Plumbing Code, the following
q
requirements must be met.
1. The boiler water pressure must be limited to 30 PSI.
An approved 30 PSI relief valve must be installed
in the boiler loop.
2. The boiler heat transfer medium must be either
potable water or use fluid additives that have a toxicity rating of Class 1.
3. Bear a label on the system with the Wording “Cau-
tion” followed by:
a. The heat transfer medium must be water or
other nontoxic fluid having a toxic rating of
Class 1 as listed in clinical Toxicology of Commercial 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.
The water heater and water lines must be protected
from exposure to freezing temperatures. Freezing tem-
eratures can cause damage to this indirect water
p
heater. The unit should be located indoors.
If the water heater is to remain idle for an extended period of time, the power and water to the boiler system
should be turned off to conserve energy and prevent a
build-up of dangerous hydrogen gas.
The water heater and piping should be drained if they
might be subjected to freezing temperatures.
After a long shut-down period, the water heater’s operation and controls should be checked by qualified service personnel. Make certain the water heater is
completely filled again before placing it in operation.
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