Rheem 3805 Series, RHP270-3805, RHP340-3805 Owner's Manual And Installation Instructions

Owner’s Guide

and

Installation Instructions

Rheem Heat Pump Water Heater

3805 Series

270,340 Models

This water heater must be installed and serviced by a qualified person.

Please leave this guide with the householder.

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Dear Homeowner:

Thank you for selecting the Rheem residential heat pump water heater.

NOTE: For continual safe operation of this water heater it must be installed, operated and
maintained in accordance with these instructions. This manual provides instruction regarding both
installation and operation. After installation is completed please ensure the manual is given to
the end-user for future reference.

This water heater is designed for use in a single family domestic dwelling for the purpose of heating
potable water.

The main features of the water heater include: automatic operation whilst power and water
supplies available; simultaneous delivery of hot water to multiple outlets; automated
temperature control to maintain tank temperature to constant level; inclusion of a number of
safety protections such as thermostat, over temperature cut-off device, temperature/pressure
relief valve and earth protective device (these devices must not be tampered with or removed. The
water heater must not be operated unless each of these devices is fitted and is in working order).

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Table of Contents

PRECAUTIONS .................................................................................................................................................. 4

SPECIFICATIONS ............................................................................................................................................... 6

DIMENSIONS .................................................................................................................................................... 8

INSTALLATION ................................................................................................................................................. 9

PLUMBING CONNECTION ............................................................................................................................... 10

MATERIAL SPECIFICATIONS ...................................................................................................................................... 10

CONNECTION SIZES ................................................................................................................................................ 10

PIPE SIZING .......................................................................................................................................................... 10

WATER CONNECTIONS ........................................................................................................................................... 11

HOT WATER DELIVERY ........................................................................................................................................... 11

TEMPERATURE & PRESSURE RELIEF VALVE ................................................................................................................. 11

EXPANSION CONTROL VALVE (ECV) ......................................................................................................................... 12

RELIEF VALVE DRAIN .............................................................................................................................................. 12

CONDENSATION DRAIN .......................................................................................................................................... 13

REDUCING HEAT LOSSES ......................................................................................................................................... 13

WATER SUPPLIED BY STORAGE TANK ON THE ROOF ....................................................................................................... 13

ELECTRICAL CONNECTION .............................................................................................................................. 14

OPERATION AND USAGE ................................................................................................................................ 15

TO FILL AND TURN ON THE WATER HEATER .............................................................................................................. 15

REMOTE CONTROLLER ............................................................................................................................................ 15

TO TURN OFF THE WATER HEATER ................................................................................................................ 17

DRAINING THE WATER HEATER ..................................................................................................................... 18

WATER QUALITY ............................................................................................................................................ 18

ANODE INSPECTION AND REPLACEMENT ..................................................................................................................... 18

SATURATION INDEX: .............................................................................................................................................. 19

MAINTENANCE .............................................................................................................................................. 19

MINOR SIX MONTH MAINTENANCE ........................................................................................................................... 19

MAJOR FIVE YEAR SERVICE....................................................................................................................................... 20

HEAT PUMP SYSTEM .............................................................................................................................................. 20

TROUBLESHOOTING....................................................................................................................................... 21

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FAILURE AND SOLUTION ......................................................................................................................................... 21

CONTROL PANEL ................................................................................................................................................... 21

USING HOT WATER ............................................................................................................................................... 22

WIRING DIAGRAM ......................................................................................................................................... 24

WARRANTY .................................................................................................................................................... 25

1. HEAT PUMP WATER HEATER MODEL ........................................................... ERROR! BOOKMARK NOT DEFINED.

2. TERMS OF THE SOLAHART WARRANTY AND EXCLUSIONS TO IT .................. ERROR! BOOKMARK NOT DEFINED.

3. WHAT IS COVERED BY THE SOLAHART WARRANTY ................................................................................. 25

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Precautions

Please read these precautions carefully, failure to follow these instructions may damage your Heat
Pump water heater or endanger the safety of persons and property in the vicinity of the water
heater.

This water heater is only intended to be operated by persons who have the experience or the
knowledge and the capabilities to do so. This water heater is not intended to be operated by persons
with reduced physical, sensory or mental capabilities i.e. the infirm, or by children. Children should
be supervised to ensure they do not interfere with the water heater.

The water heater must be directly connected to a 220 V AC (±10%) mains power supply. The water
heater must be on its own circuit with an isolating switch installed at the switchboard. A secondary
isolating switch may be installed within reach of the water heater.

 The removal of the access cover(s) will expose 220 Volt wiring. They must only be removed

by a qualified technician.

This water heater can deliver water at temperatures which can cause scalding. Check the water
temperature before use, such as when entering a shower or filling a bath or basin, to ensure it will
not cause scald injury.

 We recommend and it may also be required by regulations that an approved temperature

limiting device be fitted. This will ensure the water temperature does not exceed 50°C and
the risk of scald injury will be reduced.

 Do not use aerosols, stain removers and household chemicals near the water heater whilst

it is working. Gases from some aerosol sprays, stain removers and household chemicals are
corrosive to the materials used in the heat pump system.

 Do not store swimming pool chemicals, household cleaners, etc near the water heater.
 Ensure the air inlet and outlet louvres are not obstructed in any way at any time. Do not lean

any objects against water heater and ensure all trees and shrubbery are well clear of air
intakes and exhaust.

 Discharge of water from relief valve and condensate drain is normal during heat pump

operation therefore provision must be made to drain this water away. A suitable floor drain
that enables water to be drained away to a safe location must be installed near the storage
tank location. The continual presence of moisture around base of heater will lead to
premature failure.

 The water heater is suitable for both indoor and outdoor installation. Take care to ensure all

electrical components are protected from effects of humidity and rain.

 The power supply to the water heater must not be switched on until the water heater is

filled with water.

 Do not attempt to install, repair or remove the water heater, all work must be carried out by

a qualified technician.

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 Do not attempt to insert any foreign object (e.g. hand, screwdriver, stick) into the air inlet or

outlet of the outdoor unit. Rotating fan blades may cause injury.

 If the water heater begins to operate abnormally (e.g. excessive noise, emit smoke, peculiar

smell, etc) stop operation of the equipment, isolate power supply promptly and contact the
Service Department. Do not attempt to repair the unit.

 Operate the easing lever on the temperature & pressure relief valve at least once every 6

months. It is very important you raise and lower the lever gently.

o Ensure that the drain line is clear and free of any obstructions and discharge water

can freely flow from drain line. If water does not discharge please contact Service
Department immediately.

Specifications

Model

RHP270-3805

RHP340-3805

Power Supply

220V～50Hz

Circuit Fuse - Model Number

50T T16AL250V

Circuit Fuse - Parameters

16A/250V

Rated heating volume*

3250 W

HP heating rated input
Power (watts)

900

Current (amps)

4.1

Auxiliary heating input
Power (watts)

2400

Current (amps)

10.9

Power (watts)

3800

Current (amps)

17.3

Rated Hot water output (litres/hr)

70

Water temperature setting (oC)

30～65 (Preset 55)

Suitable ambient temperature (oC)

-7～43

Refrigerant quantity

R134a (1.35 Kg)

Water Side

Heat exchanger type

Copper Pipe coiled outside the tank

Tank capacity (L)

270

340

Cold/ hot water connection

RP ¾” / 20

relief valve connection

RP ¾” / 20

Maximum Pressure (MPa)

0.85

Air Side
Heat exchanger type

Female fitting hydrophilic aluminium foil

Air outlet

Side Exhaust

Storage
Tank

Diameter (mm)

ø648

Height (mm)

1815

2125

Net weight (kg)

115

130

*Working conditions: Dry bulb temperature: 20oC, Wet bulb Temperature: 15oC,

Tank water inlet: 15oC, tank water outlet: 55oC.

Maximum Input

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