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ELECTRICAL INSTALLATION
INSTRUCTIONS
Electric booster water heaters are available for operation on standard
power systems. Check the nameplate for the proper power supply.
All internal electrical connections have been made at the factory. See
Circuit Breaker and Fuse Sizing Chart for supply wire size, fuse,
breaker and conduit recommendations.
WARNING !!
For proper electrical installation conforming to local
electrical codes, consult a licensed electrical
contractor.
WARNING !!
The main power circuit must be disconnected prior
to performing any maintenance on the booster
heater to avoid possible personal injury or damage
to the heater.
ELECTRICAL CONNECTIONS
AL CONNECTIONS
1. Locate the heater terminal or fuse block(s) in the control box.
The control box is under the front hinged jacket cover.
2. Bring power leads from a properly sized fused disconnect
switch or circuit breaker through knock-out provided in base
and connect to the terminal or fuse block(s). USE COPPER
WIRE ONLY.
3. A grounding lug is provided near the supply terminals. An
equipment grounding conductor must be properly connected
to it.
4. Replace and secure cover(s).
CAUTION !!
Do not turn on power to booster heater until the
tank has been filled with water and all air has been
vented through the dishwater rinse nozzle. The
heating elements will burn out in seconds if operated
when they are not immersed in water, unless the
heater is equipped with a low-water cutoff (LWCO).
INSTALLATION AND SERVICE MANUAL
SPACE SAVER BOOSTER
PLUMBING INSTALLATION
INSTRUCTIONS
For the most effective operation install the booster heater as close as
possible to the dishwasher.
Employ recirculation if distance between booster
and dishwasher exceeds NSF specifications.
WARNING !!
To assure proper operation and avoid a possible
unsafe condition, the booster heater must be
installed in a horizontal position with the base
parallel to the floor and the inlet connection at the
lowest point.
TEMPERATURE AND PRESSURE RELIEF VALVE
For protection against excessive pressures and temperatures in the
booster heater, install temperature and pressure protective equipment
required by local codes. The manufacturer supplies valves constructed
with brass working parts and heat resistant silicone seat discs for all
booster heater models.
WARNING !!
Valves supplied by manufacturer are designed for
high temperature commercial operation. Do not
substitute OEM valves with valves designed for
domestic water heaters.
Temperature/pressure protective equipment should not be less than a
combination temperature/pressure relief valve certified by a nationally
recognized testing laboratory that maintains periodic inspection of the
production of this equipment and meets the requirements for Relief
Valves and Automatic Shutoff Devices for Hot Water Supply Systems,
ANSI Z21.22-latest edition. The temperature/pressure relief valve
must be marked with a minimum set pressure not to exceed the marked
hydrostatic test pressure of the booster heater.
1
SSB-i&s--01
NOTE:
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Summary of Contents for Lochinvar NSF SSB-i & s--01
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Page 1: Electrical Installation Instructions
INSTALLATION AND SERVICE MANUAL SPACE SAVER BOOSTER ELECTRICAL INSTALLATION INSTRUCTIONS Electric booster water heaters are available for operation on standard power systems. Check the nameplate for the proper power supply. All internal electrical connections have been made at the factory. See Circuit Breaker and Fuse Sizing Chart for supply wire size, fuse, breaker and conduit recommendations. -
Page 2: Temperature/Pressure Gauges
INLET Connect the booster heater water inlet to a hot water supply line from the regular water heater. Water temperature from the regular water heater should be 100°F or 140°F (52°C or 60°C) and should not exceed 160°F (71°C). Minimum temperature differential between inlet and outlet temperatures should never be less than 20°F (11°C). -
Page 3: Installation Check
- If incoming temperature is 140ºF (60ºC) at the start of the washing cycle, but falls below at the end, the primary water heater is not delivering sufficient 140ºF (60ºC) water and the condition is correctable with installation of a commercial primary water heater model of the correct size. - Page 4 Primary water temperature should not exceed 160ºF (71ºC). ONLY 170-175ºF SOLUTION - Check to be sure primary water heater is functioning properly. Primary water heater thermostats may be set too high, causing nuisance tripping. Adjust primary heater thermostats to 140-150ºF (60ºC - 66ºC).
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Page 5: Installation
CAUSE B Control thermostat may be set too high or be defective. SOLUTION - Reset thermostat(s). If condition is not corrected, replace thermostat(s). CHATTERING CONTACTOR(S) OR NOISY RELAY. CAUSE A Contactors chatter or hum excessively when pulled in. SOLUTION - Accumulation of dirt will prevent proper seating of armature. -
Page 6: High Temperature Limit Switch
HIGH TEMPERATURE LIMIT SWITCH RECALIBRATION If the temperature in the heater exceeds 210ºF (99ºC), the high temperature limit will shut off the power. The switches must be manually reset by pushing the red buttons. The limit switch has been calibrated at the factory and should not require adjusting. If the calibration changes and must be re-adjusted, the procedure is as follows: Models 4-18kW... -
Page 7: Circuit Breaker And Fused Disconnect Switch Sizes
CIRCUIT BREAKER AND FUSED DISCONNECT SWITCH SIZES VOLTS Wire size is based on THHN wire for branch circuit protection at .91 derate factor. Circuit breakers are to be mounted remotely and wired by the contractor. Sizes are based on the NEC table 310-16. Conduit size is based on conductors plus ground wire sizing as per NEC table 250-122. Breaker or Fuse Size Copper Wire Size —... - Page 8 DIMENSIONS HANGING SUPPORT...
- Page 9 PLUMBING CONNECTIONS...
- Page 12 CP-2M-4/03-Printed in U.S.A.