Merlin 600E Operating instructions

Brand: Merlin

Model: 600E

Type: Operating instructions

Operating Instructions

Instantaneous Gas Fired Hot Water System

INTRODUCTION

The Merlin 600E is a powerful and extremely eﬃ cient

gas ﬁ red, instantaneous water heater intended for

domestic use.

Operation is automatic. Simply turn on any hot

water tap and the Merlin will light automatically

and continuously supply hot water at the selected

temperature until the tap is turned oﬀ . The Merlin never

runs out of hot water. While electricity, water and gas

supplies are connected, hot water is available whenever

the hot water tap is open.

Ignition is electronic; there is no pilot light. When the

hot water tap is oﬀ , no gas is used.

Merlin’s microprocessor based control system responds

instantly to changes in ﬂ ow, ensuring smooth, seamless

control over the powerful burner to maintain a steady

temperature.

The Merlin 600E is a fan forced, fully condensing

appliance, suitable for outdoor installation only.

Remote controllers enhance the comfort and

convenience of the system by providing close control

over water temperature from anywhere in the home.

Typically, one controller would be placed in the kitchen/

laundry area and one in each bathroom.

Temperatures selected at a remote controller are

retained in the memory of that controller.

In the event of a system malfunction, an error message

is displayed on the remote controller, which assists with

fault ﬁ nding.

Operating noise level is low.

REMOTE TEMPERATURE CONTROL

Remote controllers are not necessary to operate the

unit, but are strongly recommended as they provide

greater control, comfort and convenience.

For example, setting the temperature on the controller

will maintain shower temperature at approximately the

set temperature, regardless of changes in inlet water

temperature or ﬂ uctuations in pressure due to other

users turning hot or cold taps on and oﬀ .

Units operating without remote controllers will deliver

water at the default temperature of 50 deg C and

require mixing with cold water for lower temperatures.

Remote controllers are battery operated and

communicate with the master unit (in the water heater)

via UHF radio link. They are totally portable and require

no installation.

Up to four (4) remote controllers can be used on a

system, and can be added at any time.

Each remote controller has the ability to take control

of an idle system and maintain exclusive control until

surrendered by pressing the transfer button to return

control to the master.

Remote controllers include a battery saving feature

which switches the display oﬀ when not in use.

OPERATION WITH REMOTE

CONTROLLERS

To obtain the best performance from your hot water

system, it is important to use the remote controllers

correctly.

Used as intended, the hot water system will supply

hot water at the selected temperature, even when the

water ﬂ ow is varied or when more than one tap is used.

The purpose of the remote control feature is to enable

you to have complete control over your hot water

system.

Adjustments to the operation of your hot water system

can be made with any of the remote controllers.

A diﬀ erent temperature can be stored in the memory of

each remote controller.

Set temperatures: 36,37,38,39,40,41,42,43,44,45,46,

47,48 degrees Celsius.

Default temperature (ie; no control) = 50 degrees

Celsius.

TAKING CONTROL

If you wish to set the hot water temperature from a

remote controller, simply press the “Transfer” button.

If the system is already in use, the water temperature

currently being supplied will be displayed and the

system will not allow you to take control. Transfer is only

permitted when the system is not in use.

If the system is not in use (idle), the temperature last set

on the controller will appear steady on the display and

the “in control” symbol will appear on the left hand side

of the display signifying that this controller now has

exclusive control.

When the hot water tap is turned on, the symbol in

the centre of the display will ﬂ ash, indicating that the

system is in use. The temperature of the hot water being

supplied is displayed and can be adjusted between the

limits of 36 deg C and 48 deg C in steps of 1 degree,

whenever the controller is in control.

To surrender control when ﬁ nished with the hot water,

simply press the “Transfer” button. The “in control”

symbol will disappear and the default temperature of

50 deg C will appear steady on the display.

Note: If the system remains idle for longer than 5

minutes, control will be forfeited and the temperature

will revert back to the default temperature of 50 deg C.

ERROR MESSAGES (displayed on remote controllers)

MERLIN RMU Remote Control

Note: If the system remains idle for longer than 5 minutes, control will be

forfeited and the temperature will revert to the default temperature of 50 deg C.

Performance Hot Water Capacity: 24 litres per minute

(Raised 25 deg C

above inlet temp)

Nominal Gas Input: 152 MJ/h

(At full power)

Thermal Eﬃ ciency: 95 %

Features Ignition: Automatic (Electronic)

Set Temperature: 50 deg C

Temperature Range: 36 – 48 deg C (1 deg increments)

(With remote control) and 50 deg C

Anti Frost Protection: Optional

Physical Height: 653 mm

Width: 370 mm

Depth: 270 mm

Weight: 28 kg

Gas Inlet Connection: 3/4” BSP Male (RH side)

Cold Water Connection: 3/4” BSP Male (Centre)

Hot Water Connection: 3/4” BSP Male (LH side)

Requirements Installation Location: Outdoor Only

Gas Type: Natural Gas

Gas Inlet Pressure: 1.13 – 3.0 kPa

Inlet Water Pressure (Max.): 1200 kPa

Electrical Supply: 240 volt, 50Hz

(Requires a single phase,

Weatherproof power point

adjacent to heater)

Warranty Parts and Labour: 5 Years

MAINTENANCE

Routine maintenance is not recommended,

since there are no user-adjustable or

serviceable components contained in

the appliance.

In the event that a fault occurs which

can not be rectiﬁ ed by following the

instructions in the section called “Error

Messages”, call for service.

Do not remove the cover and attempt the

repair yourself. Servicing shall only

be carried out by authorised personnel.

NOTE: When inlet water temperature

is high and ﬂ ow is relatively low,

operation at low set temperatures

should be avoided, since the calculated

demand may fall below the minimum

operating power of the heater.

In such cases it is advisable to set

the heater at a higher temperature

and mix cold water to achieve the

desired temperature.

SAFETY PRECAUTIONS

ALWAYS CHECK WATER TEMPERATURE BY HAND BEFORE

ENTERING THE SHOWER OR BATH.

KEEP FLAMMABLE MATERIALS, TREES, SHRUBS ETC AWAY FROM UNIT.

DO NOT ALLOW ANY OBJECT TO OBSTRUCT FLUE OUTLET OR AIR INTAKE.

SPECIFICATIONS

FOR SERVICE OR SPARE

PARTS CONTACT

PRIMO-TECH PTY LTD

Ph: 08 9478 6443

Merlin 600E Operating instructions

Merlin 600E Operating instructions

Merlin 600E Operating instructions

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