Rinnai Energysaver RHFE-556T User manual

Installation and User Manual
RHFE-556T
RHFE-556T
EnergysaverÑSpace Heater
Operation and Use - Page 2
Installation - Page 12
Important.
Read these instructions carefully before attempting installation or use of
this appliance. All work must be carried out by competent persons.

CONTENTS
Warranty ..........................1
Layout of appliance..........2
Features...........................4
Safety Points....................5
Operation .........................7
Adjusting Temperature.....8
Humidifier.........................9
Wiring Diagram ..............23
Gas Conversion .............24
Extension Kits ................28
Service Contact Point ....33
Rinnai Corporation - Japan
Manufactured under a
Quality System Certified
as complying with ISO
9001 by an Accredited
Certification Body.
ISO 9001
APPROVED BY JIA

– 1 –
RINNAI WARRANTY OF QUALITY
As the purchaser of this high quality model RHFE-556T product you are provided with the following
warranty:
Free Parts
Heat Exchanger 15 Years
Fan 1 Year
All other parts 1 Year
* Full Heat Exchanger replacement (parts only) for all 15 years.
This warranty does not cover cleaning and normal wear and tear, calls of this nature may be
chargeable. Please check the fault finding charts on page 32, before asking for a service call. You
may be able to overcome the problem without the service call, or the heater may be operating
normally. Service calls to a heater which is operating normally may be chargeable, even when the
heater is under warranty.
The installer is responsible for your heater’s correct installation. There is no requirement to post the
following information back to Rinnai UK Ltd.
However we advise that you keep it in a safe place.
Date of installation:
Installer’s name:
Address:
Telephone:
Licence number:
CONDITIONS
1. It is a condition of this warranty that the heater shall have been serviced annually during its lifetime
by a suitably qualified service engineer and that it shall have been fitted and used in accordance
with the Company’s Installation and Operating instructions.
2. Failing to use genuine Rinnai spare parts may invalidate the warranty.
3. The serial number of the heater must be supplied prior to any claim being made.

–2 –
GETTING TO KNOW YOUR NEW RHFE-556T
INDICATOR PANEL
ROOM
TEMPERATURE
SENSOR
GAS CONNECTION
ELECTRICAL CORD
HUMIDIFIER TRAY
Built into the warm air
discharge duct.
Humidifies the warm
air flow.
BOTTOM TRIM
Pulls off to allow filling
of humidifier tray.
LOUVRE
Warm air discharge
duct.
CONTROL PANEL
for
ON-OFF
And
Room Temp. Control
AIR FILTER
Helps to protect the
interior of the
appliance and fan
from dust particles.
EXHAUST OUTLET
Exhausts flue products
to the outside of the
building.
AIR INLET TUBE
Carries air for
combustion.
FLUE SYSTEM

–3 –
CONTROL PANEL LAYOUT
LO 16 18 20 22 24 26 HI
ON/OFF
Roomadjustment
Roomtemp.indicator
ON
FILTER
-
POWER ON / COMBUSTION INDICATOR
Indicates that the appliance is turned ON and
whether the burner is alight.
FILTER INDICATOR
Indicates that the filter
needs cleaning.

–4 –
FORCED FLUE SYSTEM PUSH BUTTON IGNITION
Air for combustion is taken from outside the
room and the flue products are exhausted
outside, keeping the room air clean.
Only one touch of the ON/OFF switch is
required to operate the heater.
EXHAUST
AIR
INLET
FILTER INDICATOR
When the fan filter becomes covered with
dust and the temperature inside the
appliance rises, the filter indicator will flash.
The filter should be vacuumed at regular
intervals to avoid unnecessary strain on the
appliance.
FILTERINDICATOR
WARM AIR DISCHARGE
Warm air flows from the bottom of the
appliance through the louvres, assisting in
even heat distribution. An integral humidifier
tray is built into the warm air discharge duct.
ON/OFF
CENTRAL CONTROL
This heater may be installed as part of a
centrally controlled Time Clock System. In
this case the heater can only be operated
when the central time clock is “ON”.
AUTO COMFORT
Ensures that the flow of warm air from the
louvres is maintained at a comfortable
volume during the warm-up period by a 8
step modulating convection fan, in
conjunction with the thermostat, reducing
cool draughts.
FEATURES

–5 –
SAFETY POINTS
Do not restrict the warm air discharge by
placing articles in front of the heater.
This appliance must not be used for any
purpose other than heating.
Do not spray aerosols whilst the heater is
operating. Most aerosols contain butane gas,
and can be a fire hazard if used near this
heater when it is in use.
Flue Guard must be fitted if indicated on page
17.
Do not allow curtains or other flammable or
combustible materials to come into contact
with the heater.
Combustible materials must not be placed
where the heater could ignite them.
Do not allow anyone to sit on or lean against
the appliance.

–6 –
SAFETY POINTS
Keep flammable materials, trees, shrubs, etc,
away from the flue terminal.
Do not allow anyone to post articles through
the louvres.
LPGAS
GAS
Gasoline
Filter should be cleaned at regular intervals. It is strongly recommended that a guard is
fitted around heater where there are young
children, elderly, infirm or handicapped
persons.
Do not place articles containing liquids on top
of the heater. Liquids spilt on the controls may
cause extensive damage.
Do not allow young children or the infirm to
sleep directly in front of the heater.
Clean with vacuum cleaner, weekly.

–7 –
OPERATING YOUR NEW RHFE-556T
■TO OPEN THE CONTROL PANEL
Open Control Panel Cover with key provided.
■TURNING ON (For manual operation
please refer to page 21).
Press the ON/OFF button to operate the heater. The
ON indicator will glow green. After approximately 20
seconds the spark generator will be heard before the
burner ignites and the ON indicator glows red,
indicating that the burner is alight. Warm air can be
felt coming from the louvres 15 seconds later.
If the heater does not ignite on initial use, this may be due to air remaining in the gas supply line. The
spark generator will only continue for 15 seconds. After this it will be necessary to press the ON/OFF
button OFF, then ON again.
■TURNING OFF
Simply press the ON/OFF button to switch off the
heater. The ON indicator will go out. The convection
fan will continue to operate for several minutes after
the burner has gone out in order to cool the appliance.
Do not unplug the appliance while the convection
fan is running.
IMPORTANT NOTE:
DO NOT turn heater off by unplugging at the power point.
The convection fan must continue to run until the appliance cools.

–8 –
ROOM TEMPERATURE ADJUSTMENTS
LO 16 18 20 22 24 26 HI
ON/OFF
Roomadjustment
Roomtemp.indicator
ON
FILTER
-
POWER ON / COMBUSTION INDICATOR
Indicates that the appliance is turned ON and
whether the burner is alight.
FILTER INDICATOR
Indicates that the filter
needs cleaning.

–9 –
■FAN FILTER
To protect the room air fan from dust particles or lint, a
filter is situated at the rear of the appliance. When
this filter becomes blocked, the filter indicator will flash
to indicate that it should be cleaned. Clean the filter
weekly during the heating season to avoid
unnecessary strain on the appliance.
Do not remove filter when appliance is operating.
When the filter requires cleaning, clean filter before
using the appliance, or whilst the appliance is not
operating.
If you do not clean the filter at regular intervals and
the filter indicator is allowed to remain flashing, then
the appliance will stop and [14] will flash on the Digital
Display signifying that the inbuilt safety device has
functioned. You must clean the filter before operating
the heater again.
■HUMIDIFIER TRAY
■VERTICAL LOUVRE ADJUSTMENT
The warm air flow direction may be altered by
inserting a screwdriver or similar tool and gently
bending the vertical louvre(s) either to the left or the
right.
Note: these louvres are not designed to be
adjusted more than 6 times.
So that you can humidify the air, your Rinnai RHFE-556T is fitted with an enamelled tray at the bottom
of the heater. If you choose to make use of the humidifier tray, it will need filling about once a day
during the heating season. Do not fill the humidifier tray while the heater is running.
The humidifier has the benefit (when filled with water) of raising the humidity in the air. With increased
humidity, the heater can actually be run at a lower temperature while still maintaining the same level of
comfort.
1To fill the humidifier tray:
Remove the bottom trim panel, below the louvres, by
pulling on both sides. Simply pull the tray forward to
allow it to be filled with water. The warm air will be
humidified as it passes over the water in the tray.
Refit the bottom trim panel after filling the tray. The
RHFE-556T is a very high efficiency appliance,
during operation a small amount of condensation is
produced in the flue system, this drains into the
enamelled humidifier tray.

–10 –
CARING FOR YOUR NEW RHFE-556T
This appliance is safely controlled. If there is something wrong then it will stop, as it is protected by
the following safety devices.
Ignition Safety Device Power Failure Safety Device
Burner Safety Device Power Surge Safety Device
Overheat Safety Device Fan Delay Safety Device
Your RHFE-556T requires very little maintenance,
simply clean the rear fan filter once a week and wipe
the outer case and louvre section with a damp cloth.
DO NOT USE SOLVENTS.
Solvents may melt or distort plastic parts.
Problem
Cause
Not Plugged In
Power Cut
(Initial Installation)
Air in gas pipe
Gas Filter Blocked
Missed Ignition
Flue terminal obstructed
Flue manifold not connected
Louvre obstructed
Air filter blocked
Gas Escape
Gas turned off at meter
Remedy
No ON indicator
Burner doesn't ignite
Unusual combustion
Combustion stops during operation
Smell of gas
Noisy Ignition
Takes too long to warm the room
Remote control doesn't work
Plug In
Re-ignite manually after
power is restored
Purge air
(Installer)
Service Call
Service Call
Clear obstruction
Service Call
Clear obstruction
Clean filter (weekly)
Service Call
Turn gas on

–11 –
PRE-SERVICE CHECK
Before asking for a service call please check the following points.
These points are part of the normal operation of the unit.
■At Ignition:
Heater does not operate.
Warm air does not flow when the burner lights.
Smoke or strange smells are produced on the
first trial light up after installation.
Sharp clicking noises at ignition, or when the
unit cuts down on the thermostat, or goes out.
Is the heater plugged in?
Have the fuses or breaker blown at the switch board?
Is there a power failure?
Is the air filter blocked?
Is anything blocking the outlet for the hot air?
Is the flue blocked?
Is a remote timer fitted and set “ON”.
■During combustion:
Clunking noise when the thermostat operates.
Unit is not heating room.
Air filter is blocked or the louvres are blocked or
obstructed.
Heater will not re-ignite after overheating.
This is the sound of the solenoid gas valves opening and
closing.
■When the unit is turned off:
Convection fan continues to run after turning
OFF.
This is to remove the residual heat from the heat
exchanger, the fan will stop when the heater cools down.
■Other Points:
Steam is discharged from the flue terminal.
Unit cuts off without apparent reason.
Power Failure.
High efficiency appliances tend to discharge water
vapour on cold days, this is normal.
Check whether filters are blocked, dirty filters will cause
the heater to overheat.
Switch OFF, then ON again when power is restored to
re-set controls.
Is the air filter blocked?
Is the set temperature high enough?
Is the warm air outlet blocked by anything?
Are the doors and windows of the room closed?
Allow heater to cool, clean air filter, operate again.
Even after unit has cooled down the heater does not
ignite again. Repair is necessary.
Contact your local agent or Rinnai for a Service call.
The fan is started automatically after a short delay.
This is to allow the heat exchanger to warm up, helping
to avoid cold draughts.
This is caused by grease or oil and dust on the heat
exchanger and will stop after a short time.
This is simply expansion noise from the heat exchanger.
R
R
R
R
R
R
R
R
R
R
R
R

–12 –
ERROR MESAGES
The Energysaver 556T has the ability to check its own operation continuously. If a fault occurs, an
Error Message will flash on the Digital Display of the control panel. This assists with diagnosing the
fault, and may enable you to overcome a problem without a service call.
Please quote the code displayed when inquiring about service.
In all cases, you may be able to clear the Error Message simply by turning the heater OFF, then ON
again.
If the Error Message still remains or returns on the next operation contact Rinnai UK Ltd or your
Supplier and arrange for a service call.
CODE DISPLAYED FAULT
Missed Ignition16
LO
20
HI
22・24
24・26
18・20・22
20・22・24
LO・16・18
16・18・20
18・20
LO・16
26
22・24・26・HI
Flame failure
Overheat
Room overheat
Room Temperature
Sensor faulty
Overheat Temperature
Sensor faulty
Sparker failure
Combustion fan failure
Faulty ON/OFF switch
Faulty solenoids
Faulty Flame Rod
Communication Error
REMEDY
Check gas is turned ON.
Service call if repeated.
Check gas is turned ON.
Service call if repeated.
Clean filter
Service call if repeated.
Lower room temperature
to less than 40˚C.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Turn heater OFF,
then ON again.
16・18・20・22・24 Flue Block Check around flue terminal

–13 –
INSTALLATION INSTRUCTIONS
Important Safety Instructions
1. Gas Safety (Installation & Use) Regulations 1998 are the ‘Rules in Force’.
In your own interest and that of safety, it is law that all gas appliances shall be installed by
competent persons in accordance with the above regulations.
Failure to install appliances correctly could lead to prosecution. Other persons should NOT
attempt to install this equipment.
2. Unpack the appliance and check it carefully. If it appears to have any operating defects DO NOT
INSTALL, but contact the supplier.
3. This appliance is intended to be used to raise the temperature in a room or office etc. You should
NOT use it for any other purpose without seeking advice from the supplier.
4. This appliance is safe if correctly installed and sited. Please comply CAREFULLY with the
instructions.
5. This appliance is to be used for NATURAL GAS (G20) and PROPANE (G31) only. It must NOT
be used with any other type of gas.
6. Installation MUST be carried out in accordance with the current issue of:
a) Building Regulations issued by the Dept. of the Environment and Building Standards (Scotland
Consolidation) Regulations.
b) I.E.E. Wiring Regulations for electrical installations.
c) Gas Safety (Installation and Use) Regulations 1998.
d) BS5871 Part 1:2001
e) BS5440 Part 1:2000 and Part 2:2000
f) BS6891 Part 1:1998 (Natural Gas) and BS5482 Part 1:1994 (Propane).
g) Local Byelaws
h) Children & Young Persons Act 1933 revised 1952
i) Health and Safety at Work etc. Act, 1974
j) Such other specifications or legislation that may have superseded the above documents.
7. Should the heater be fitted in a room where there are young children; elderly; infirm or
handicapped persons, it is strongly recommended that a guard is fixed around the heater.
Guards conforming to British Standard Specification 6778:1986 (Fireguards for Use with Portable
Free Standing or Wall Mounted Heating Appliances) in respect of fixing, strength and painted
finish are acceptable and overall dimensions should be such that there is a gap of at least 100mm
(4 inches) between the guard and the heater. Standard guards that meet these requirements are
available from the supplier.
Please be sure you are aware of the implications of these notes.

–14 –
INSTALLATION INSTRUCTIONS
SPECIFICATION
Input: 6.4kW (21840 Btu/h) Burner: Stainless Bunsen Type
Ignition: Continuous Spark Gas Inlet: 1/2 inch BSP Male Connection
Flue: Forced Flue (Components are supplied with appliance).
Gas Control: Rinnai Electronic Modulating Controls.
Electrical Supply: 230V, 50Hz This appliance is fitted with a supply lead and 3 pin plug.
■Remove parts from carton and check that all parts shown below are included in the installation kit.
Back Spacer
Set
Wall Bracket
Customers operating
information and
Installation Instructions
Air Filter
Flue Securing Screws
Wall Bracket Screws
For Flue Lock Stopper
For Air Intake Clip
For Back Spacer Set
(M4)
(M4)
Angle Bracket
Flue Locking
Clamp
Flue Lock
Stopper
Insulation
Clip
Hose Clip
Plastic tie for
air inlet
(M4×20)
(M4)
(M4.8×32)
Wood
Screws
1
2
1
1
4
5
1
1
1
2
3
1
3
2
Check the unit supplied is correct for the gas type in your area.
Refer to local gas authority for confirmation of gas type if in doubt.
Refer to data plate located on the right hand side.
Check for damage, if the unit is damaged contact Rinnai.
Do not install a damaged unit before checking with your supplier.
Refer to an approved pipe sizing chart if in doubt about size of gas line.

–15 –
LOCATION
When positioning the heater the main points
governing the location are:
1. Flueing
2. Warm air distribution
This heater must not be installed where curtains or
other combustible materials could come into
contact with it.
In some cases curtains may need restraining.
See diagram for other recommended clearances.
Flue fittings must be kept clear of flammable
materials.
This heater is not designed to be built in.
The flue is not designed to be positioned under
floors, or below the level of the heater.
The flue terminal should be positioned away from
flammable materials.
300mm
50mm
50mm
1000mm
Flue
Terminal
Flue
Terminal
Flue Terminal
LP GAS

–16 –
LOCATION
Do not flue into natural draught flues or fireplaces,
this unit can only be used with one of the six types
of Rinnai flue kits.
Do not flue unit into other rooms.
Flue terminal must be outside.
When fitting the terminal beneath any ventilation
opening i.e. openable window, inlet to a ventilation
system etc., check that no part of the terminal will
finish within 300mm when measured vertically from
the bottom of such openings. When the terminal
will finish less than 2m above the level of any
ground to which any person has access, a terminal
guard of durable material must be fitted, and these
are available from your supplier.
FLUE SIZES
6 Flue lengths are available.
S flue suits wall 75 - 115 mm
A flue suits wall 115 - 240 mm
B flue suits wall 240 - 400 mm
C flue suits wall 400 - 600 mm
D flue suits wall 600 - 800 mm
E flue suits wall 800 - 1000 mm
25mm spacers are available for wall thickness less
than 75mm.
SNOW AREAS
In areas subject to heavy snowfall, keep snow clear
of flue terminal at all times.
STANDARD INSTALLATION OF FLUE
MANIFOLD.
Diagram below shows minimum clearances and
distances from obstructions. Also check local
regulations.
Flammable
Wall
Non
Flammable
600mm
300mm
Opposite
Wall
Floor
600mm
300mm
Obstruction
300mm
Snow
Side Clearances
FIT BACK COVERS (SIDES ONLY)
Fit back covers (sides only) as shown below.
Engage Lugs
Secure with
Screws

–17 –
POSITIONING THE FLUE TERMINAL
O
H
N
N
M
Q
M
HK
B
P
Q
Q
I
F
L
J
G
C
A
I
D,E
Dimension
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
Terminal Position
Directly below an opening, air brick, opening windows, etc.
Above an opening, air brick, opening window, etc.
Horizontally to an opening, air brick, opening window, etc.
Below gutters, soil pipes or drain pipes.
Below eaves.
Below balconies or car port roof.
From a vertical drain pipe or soil pipe.
From an internal or external corner.
Above ground, roof or balcony level.
From a surface facing the terminal.
From a terminal facing a terminal.
From an opening in a car port. (e.g. door, window) into a dwelling.
Vertically from a terminal on the same wall.
Horizontally from a terminal on the same wall.
From the wall on which the terminal is mounted
From a vertical structure on the roof.
Above an intersection with roof.
Distance
300mm
300mm
300mm
75mm
200mm
200mm
150mm
200mm
300mm
600mm
1200mm
1200mm
1500mm
300mm
N/A
N/A
N/A

–18 –
LOCATION
Do not install the heater in an unusually dusty area.
Use a flue guard if the terminal is easily accessible
to children.
Check local regulations.
Guards are available as an optional extra.
Floor must be level, but see page 23 regarding
adjustable legs. Do not use electrical extension
cords to connect unit to power supply. Keep the
power cord away from the flue.
FLUE MANIFOLD POSITION.
Centre of hole for flue manifold can be drilled
anywhere within the shaded area. (To avoid studs
etc.)
Before drilling the flue hole, check for water and
gas pipes as well as electric cables.
Use an 80mm (8cm) drill for hole through wall.
MOUNTING TO WALL
Assemble Angle Brackets to Back Spacer Top with
screws provided. Locate heater in position, hold
Wall Bracket in position around Angle Bracket and
mark hole positions, remove heater. Secure Wall
Bracket to wall. Relocate heater in position
ensuring Angle Bracket engages with Wall Bracket.
FLUE EXTENSION KITS
Flue extension Kits are available to allow longer
flueing lengths. Contact Rinnai for information.
Flue Hole
φ80
214
300
R279
R206
217
22
280
Cavity Opening
Guard