Baxi PREMIER PLUS Series Leitfaden

INSTALLATION AND USER INSTRUCTIONS

400L, 500L & 570L Indirect

PREMIER PLUS

Russian Version on Page 17

IMPORTANT

PLEASE READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE

INSTALLING THE BAXI PREMIER PLUS WATER HEATER. INCORRECT

INSTALLATION MAY INVALIDATE GUARANTEE.

THE BAXI PREMIER PLUS WATER HEATER MUST BE INSTALLED BY A

QUALIFIED INSTALLER IN ACCORDANCE WITH LOCAL PLUMBING, BUILDING AND

ELECTRICAL REGULATIONS

THIS APPLIANCE CAN BE USED BY CHILDREN AGED FROM 8 YEARS AND ABOVE AND

PERSONS WITH REDUCED PHYSICAL SENSORY OR MENTAL CAPABILITIES OR LACK

OF EXPERIENCE AND KNOWLEDGE IF THEY HAVE BEEN GIVEN

SUPERVISORY OR INSTRUCTION CONCERNING USE OF THE APPLIANCE IN A SAFE

WAY AND UNDERSTAND THE HAZARDS INVOLVED. CHILDREN SHALL NOT PLAY WITH

THE APPLIANCE. CLEANING AND USER MAINTENANCE SHALL NOT BE MADE BY CHIL-

DREN WITHOUT SUPERVISION.

Also:

- Water may drip from the discharge pipe of the pressure-relief device and this pipe must be left open to

the atmosphere;

-The pressure-relief device is to be operated regularly to remove lime deposits and to verify that it is not

blocked;

- How hot water can be drained. (see page 11 for details).

1. IMPORTANT INSTALLATION POINTS

1.1 The BAXI Premier Plus water heater MUST be tted with a pressure relief valve rated at 8 bar.

FAILURE TO PROVIDE ADEQUATE PRESSURE RELIEF WILL INVALIDATE ANY GUARANTEE

AND LEAD TO A DANGEROUS INSTALLATION.

1.2 Where the inlet pressure exceeds 6 bar a pressure reducing valve (set at max. 6 bar) should be

tted to the inlet supply to the heater. This MUST NOT be tted between the pressure relief valve

and the water heater (see diagram 3).

1.3 A check (non-return) valve should be tted on the inlet supply to the water heater. This MUST NOT

be tted between the pressure relief valve and the water heater (see diagram 3). This may be

provided as part of the inlet security group.

2. INSTALLATION – GENERAL REQUIREMENTS

2.1 National Wiring rules may contain restrictions concerning the installation of these water heaters in

certain areas, eg. bathrooms.

2.2 The water heater MUST be installed vertically.

2.3 Enough space should be left around the water heater for pipe connections and for access to

controls and any safety valves tted. Refer to diagram 1 and the dimensions table 1, below to

determine a suitable position for the water heater

2.4 NOTE: Ensure the oor can support the full weight of the water heater, see table 5, below for

cylinder weights.

2.5 DO NOT install where the water heater may freeze.

SIZE DIMENSIONS (mm)

400L

500L

1502

1802

832

1132

570L 1997 1336

Table 1: Dimensions

Diagram 1 - Dimensions

320

316

496

666

COLD INLET

PRIMARY FLOW

PRIMARY RETURN

T&P VALVE

SECONDARY RETURN

THERMOSTATIC CONTROL

(BOILER)

3kW IMMERSION

40°

30°

45°

924

HOT OUTLET

400

500

570

Max direct kW rating 3 3 3

Coil surface area (m²) 2.0 2.0 2.0

Coil heat up times

(Mins)4

15l/min 43 55 68

30l/min 29 38 44

60/min 21 28 30

Coil rating (kW) ²

15l/min 28.2 27.6 27.0

30l/min 41.9 40.0 39.1

60l/min 56.9 54.3 53.6

Pressure drop through

coil (MPa)

15l/min 0.02

30l/min 0.04

60l/min 0.32

Heat loss (kW/24hrs) 1.71 2.14 2.44

Weight empty (kg) 105 110 115

Weight full (kg) ¹ 505 610 685

Max mains pressure 1.6MPa (16 bar)

Max design pressure 0.8MPa (8 bar)

Operating pressure/PRV set pressure 0.3MPa (3 bar)

Max primary pressure ³ 1.0MPa (10 bar)

Expansion relief valve setting 0.8MPa (8 bar)

Immersion heater electrical rating 3.0kW@240V/2.8kW@230V ~

T&P Rating 90°C/10 bar

Notes:

1. At 3 bar inlet pressure

2. At a primary ow temperature 80°C +/- 2°C

3. The primary coil should not be exposed to more than 0.3MPa (3 bar) without the cylinder being full of

water and under the minimum working pressure.

4. Temperature rise 15°C - 60°C (45°C)

5. Tested to EN 12897:2006

Table 2: Technical Data

3. INSTALLATION – PLUMBING

3.1 Refer to section IMPORTANT INSTALLATION POINTS. Plumb in valves in the sequence shown in

diagram 3, below. Ensure the valves are installed in the correct orientation by reference to the direction

of ow arrows marked on them.

3.2 The water connections on the water heater accept direct connection of 1” (to t 28mm pipe). The

thread on the connections is G1” to enable the use of G1” male connections to be used if required.

3.3 The sanitary water INLET is marked BLUE, the OUTLET is marked RED. Several hot outlets can be

served, however, individual site demands should be considered when choosing capacity and the

number of outlets to be served.

3.4 It is recommended that an isolating valve is tted on the cold water supply to the heater.

3.5 A drain cock must be fitted below the heater in the inlet pipe work. It must be sited

between the heater and the check valve or security group (see diagram 3, below)

3.6 A sanitary circuit expansion vessel may be tted to the cold water supply as shown in diagram 3,

below to prevent wastage of expanded water. A 35L expansion vessel is recommended for this range

of cylinders.

3.7 A re-circulation circuit can be installed on the sanitary water circuit. A connection is provided for the

re-circulation circuit return pipe (threaded G1” female). This connection is supplied with a blanking

plug tted which should be removed before connecting the re-circulation circuit return pipe (see

diagram 4, page 5).

3.8 The primary heating circuit MUST be fully pumped.

3.9 The connections to the primary ow and primary return are G1” female.

Diagram 3

Primary Flow

Primary Return

Balanced cold

water connection

Pressure relief

valve

Pressure reducing

valve

Mains water

Supply

Discharge Pipe

Drain cock

Tundish

To hot outlets

Inlet water supply

Boiler thermostatic

controls

Immersion Heater

Temperature & pressure

relief valve

Diagram 4

4. ELECTRICAL REQUIREMENTS

4.1 The BAXI Premier Plus water heater is suitable for use with most gas or oil red boilers provided

the boiler has adequate thermostatic control and over-temperature protection. If in doubt consult

the boiler manufacturer.

4.2 The primary ow from the boiler MUST be pumped. Gravity circulation will not work due to the

special design of the primary heat exchanger. It is recommended that an air bleed point or

automatic air vent is incorporated into the highest point in the system.

4.3 The water heater is tted with a control thermostat suitable for the control of the sanitary water

storage temperature. This thermostat should be connected, via the terminal block provided, to the

primary heating circuit controls. See diagrams 5 and 6, page 6 for wiring information

4.4 The electrical cable should enter the terminal cover via one of the cable grips provided. The outer

sheath of the cable should be secured by the cable grip. Connection to the terminal block will

depend on the primary control arrangement. Suggested arrangements are shown in diagrams 7,

8,and 9, pages 6 and 7.

Primary Flow

Primary Return

Drain valve

To hot outlets

Inlet water supply

Check valve

Secondary return

Secondary circulation

pump

Diagram 7

1 2 3C 2

High limit

thermostat

Control

thermostat

Common

(S/L)

Load (Demand Contact)

Satised

°C

Temperature

Adjustment

Thermal cut-out

reset under screw

head

Diagram 5

Diagram 6

Ph NCH

ON DHW

PROGRAMMER

1 2 3

Ph NPh N

INDIRECT THERMOSTAT

AND THERMAL CUT-OUT 2 PORT ZONE VALVE

DHW HEAT EXCHANGER

ROOM THERMOSTAT 2 PORT ZONE VALVE

PRIMARY CH CIRCUIT BOILER PUMP

2 x 2 PORT ZONE

VALVE SYSTEM

123 4 5678910

ELECTRICAL

SUPPLY

WIRING CENTRE

NOTE: THE EARTH CONNECTIONS HAVE BEEN OMITTED

FOR CLARITY. ALL EARTH CONNECTIONS MUST BE

LINKED BACK TO THE EARTH TERMINALS IN THE WIRING

CENTRE

Diagram 8

Diagram 9

Ph NCH

ON DHW

PROGRAMMER

1 2 3

INDIRECT THERMOSTAT

AND THERMAL CUT-OUT

ROOM THERMOSTAT 3 PORT MID POSITION

VALVE BOILER PUMP

3 PORT MID POSITION

VALVE SYSTEM

123 4 5678910

ELECTRICAL

SUPPLY

WIRING CENTRE

NOTE: THE EARTH CONNECTIONS HAVE BEEN OMITTED

FOR CLARITY. ALL EARTH CONNECTIONS MUST BE

LINKED BACK TO THE EARTH TERMINALS IN THE WIRING

CENTRE

CV PUMP

1 2 3LNLN

DHW

OFF

1 2

INDIRECT THERMOSTAT

AND THERMAL CUT-OUT

ROOM THERMOSTAT 3 PORT VALVE

(HOT WATER PRIORITY) BOILER

3 PORT VALVE SYSTEM

(HOT WATER PRIORITY)

123 4 5678910

ELECTRICAL

SUPPLY

WIRING CENTRE

NOTE: THE EARTH CONNECTIONS HAVE BEEN OMITTED

FOR CLARITY. ALL EARTH CONNECTIONS MUST BE

LINKED BACK TO THE EARTH TERMINALS IN THE WIRING

CENTRE

23LNLN

PUMP

Ph NCH

ON DHW

PROGRAMMER

DHW

OFF

5. IMMERSION HEATER - ELECTRICAL

REQUIREMENTS

Note: At the time of installation the Cylinder is tted with a blank immersion boss and cover. A 3kW

immersion is available as an accessory, 95 602 030, page 14

5.1 If the water heater is tted with a supplementary immersion heater it will incorporate a

thermostatic control and over-temperature cut-out. The immersion heater is rated 3kW @ 240V

/2.8kW @ 230V , single phase.

5.2 The immersion heater is located behind the silver metal cover on the front of the water heater. The

cover is secured by a screw on the front.

DISCONNECT THE ELECTRICAL SUPPLY BEFORE REMOVING THE COVER.

5.3 The immersion heater MUST be earthed.

5.4 All electrical wiring should be carried out by a competent electrician and be in accordance with the

latest national Wiring Regulations. The circuit must be protected by a suitable fuse and double pole

isolating switch with a contact separation of at least 3mm in both poles.

5.5 The immersion heater should be wired in accordance with diagram 10, page 9. The supply cable

must be routed through the cable gland provided and the outer sheath of the cable rmly secured

by tightening the screw on the cable gland. Always replace the cover before operating.

5.6 DO NOT operate the immersion heater until the water heater has been lled with water.

5.7 It is recommended that the immersion heater thermostat is set to between position 4 and 5

(60 to 65oC), however it can be set between 1 and 5 (10o and 70oC). To adjust the temperature

insert a at bladed screwdriver into the adjustment knob and rotate, clockwise to decrease the

temperature, counter-clockwise to increase the temperature.

5.8 The thermostat incorporates an over-temperature thermal cut-out that will switch off the immersion

heater in the event of a thermostat failure. The thermal cut-out reset button is indicated on diagram

11, page 9. DO NOT bypass the thermal cut-out in any circumstances.

Brown Blue

Green/Yellow

Thermostat

Earth Post

Fused (13A) double

pole isolating switch

1.5mm² 3 core

HOFR sheathed

cable

230V ~ MONOPHASE

Diagram 10

Thermal cut-out

reset button

Temperature

adjustment

Customer

earthing

terminal

Thermostat

Diagram 11

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