Storage Water Heater Installation

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Heater Installation

SAFETY PRECAUTION
This sign warns of serious injury, damage to property and potential death. Before operating, please read the following “Safety Precautions” carefully.

IMPORTANT

Installation should be carried out by qualified personnel with close reference to the instruction manual and compliance to the local authority.
All plumbing works must be completed and heater tank fully filled with water before proceeding to electrical connections. This will prevent any damage to the heating element and thermal fuse.
This appliance must be installed indoor only.
Do not use ABS or PVC plastic pipes for the inlet and outlet connections. Use only recommended stainless steel, copper or polymer pipe which can withstand high temperature and pressure.
Do not install in area where the water supply exceed 20mg/litre (20ppm) of chloride as this cause corrosion to the stainless steel heater tank and void the warranty.

Select a suitable location for convenience of water and electrical supply as well as easier for future maintenance. Make sure the location is free from water splash.
In case the water supply is from the water tank, the water heater should be connected to a booster pump (minimum 0.15 MPa / 1.5 bar), in order to have sufficient hot water flow.

For Horizontal Model (JH)

Remove screw X and Y from the heater and position the mounting rings to the desired mounting position, according to the type of mounting position required (Refer figure A).
Mark and drill 4 holes (Ø11mm X 60mm) with dimension C and F (Refer figure C).
Insert the expansion bolts firmly to the holes and remove the hex nuts and washers.

Mount the mounting rings in position to the expansion bolts.

CAUTION

Ensure the inlet pipe is at the lower position (Refer figure A).

Securely fasten the washers and hex nuts. Reinstall screw X and Y.

For Vertical Model (JVA)

Mark and drill 2 holes (Ø11mm X 60mm) with dimension C and F (Refer figure C).
Insert the expansion bolts firmly to the holes and remove the hex nuts and washers.

Mount the mounting bracket in position to the expansion bolts.

CAUTION

This appliance is designed for vertical mounting to the wall only.

Securely fasten the washers and hex nuts.

For Horizontal Model (JHT)
1. Refer to figure B, mark and drill 2 holes (ø11mm x 60mm depth) on the wall.
2. Insert the expansion bolts firmly into the holes and remove the hex nuts and washers.
3. Fix the wall bracket to the expansion bolts and securely fasten the washers and hex nuts.
4. Carefully hang the mounting bracket of the heater to the wall bracket on the wall.

FIGURE A : MOUNTING RINGS POSITION FOR HORIZONTAL MODELS

TOP MOUNTING (ON CEILING OR FLOOR)

LEFT HAND SIDE MOUNTING (ON WALL)

RIGHT HAND SIDE MOUNTING (ON WALL)

HANGING MOUNTING (ON CONCRETE CEILING)

FIGURE B : SINGLE SLOT-IN WALL BRACKET FOR HORIZONTAL MODELS

FIGURE C : INSTALLATION DIMENSIONS

JH MODEL

JVA MODEL

JHT MODEL

SPECIFICATIONS
Model	Tank Capacity Litres (Imp. Gals)	Dimensions (mm)										Approx. Wt. Kgs (Empty / Full)
Model	Tank Capacity Litres (Imp. Gals)	A	B	C	D	E	F	G	H	I	J	Approx. Wt. Kgs (Empty / Full)
JH 15	15 (3.3)	260	405	265	381	96	70	96	350	65	92	10 / 25
JH 25	25 (5.5)	260	405	265	381	121	150	121	350	65	92	12 / 37
JH 35	35 (7.7)	260	405	265	381	121	269	121	350	65	92	14 / 49
JH 38	38 (8.4)	260	405	265	381	121	304	121	350	65	92	15 / 53
JH 50	50 (11.0)	260	405	265	381	121	438	121	350	65	92	17 / 67
JH 56	56 (12.3)	260	405	265	381	121	508	121	350	65	92	18 / 74
JH 68	68 (15.0)	260	405	265	381	121	648	121	350	65	92	20 / 88
JH 91	91 (20.0)	260	405	265	381	121	914	121	350	65	92	25 / 116
JVA 25	25 (5.5)	100	393	217	372	121	271	-	316	65	77	12 / 37
JVA 35	35 (7.7)	100	393	217	372	121	390	-	316	65	77	14 / 49
JVA 50	50 (11.0)	100	393	217	372	121	559	-	316	65	77	17 / 67
JHT 35	35 (7.7)	100	385	100	381	206	206	450	120	58	170	14 / 49

Plumbing Connection

Install 1 or 2 unit of check valve to ½” BSP connection at end of pressure relief valve (With blue cap).

CAUTION

The position of the check valve(s) must not be too close to the pressure relief valve. A length of 500mm is good for thermal expansion.
The pressure relief valve is for protection against excessive pressure in the heater tank and must not be removed or replaced. When the heating element operates, it is normal for water to drip from the drain valve.

Connect cold water supply line to the check valve.
Connect hot water line to the outlet pipe (With red cap).

Connect a 15mm (1/2”) diameter copper tube (maximum length 9 metres) to the drain valve end, leading downward to a drain that is open to the atmosphere and in a frost-free ambient, so that in the event of excessive pressure in the storage tank, the flow of water will not cause damage to the surroundings or critical areas of the building.

CAUTION

Drain valve must not be closed or blocked which may cause serious damage to the heater tank and void the warranty.

A. Cold Water Inlet from Main Supply / Water Tank
B. Control Valve (Not Included)
C. Single or Double Check Valve (Not Included)
D. Pressure Relief Valve

E. Drain Valve (Must Not Be Closed / Blocked)
F. Overflow Pipe to Drain or Floor Trap
G. Hot Water Outlet to Mixer Tap

Install 1 or 2 unit of check valve to ½” BSP connection at end of pressure relief valve (With blue cap).

CAUTION

The position of the check valve(s) must not be too close to the pressure relief valve. A length of 500mm is good for thermal expansion.
The pressure relief valve is for protection against excessive pressure in the heater tank and must not be removed or replaced. When the heating element operates, it is normal for water to drip from the drain valve.

Connect cold water supply line to the check valve.
Connect hot water line to the outlet pipe (With red cap).

CAUTION

Drain valve must not be closed or blocked which may cause serious damage to the heater tank and void the warranty.

A. Cold Water Inlet from Main Supply / Water Tank
B. Control Valve (Not Included)
C. Single or Double Check Valve (Not Included)
D. Pressure Relief Valve

TO FILL HEATER TANK

Open control valve in cold water supply line and all hot water faucets to allow trapped air to be vented out from the heater tank and piping.
Allow the heater tank to completely fill with water as indicated by a steady flow of water from the hot water faucets without switching on the electrical supply.
Turn off all hot water faucets. Check all pipe connections to ensure that they are properly sealed against leakage.

Electrical Connection

IMPORTANT

All plumbing works must be completed and heater tank filled with water before proceeding to electrical connections. This will prevent any damage to the appliance.
Ensure that the electrical supply is single-phase at 220 to 240 Va.c.
This appliance must be permanently earthed. The use of Plug & Socket is not recommended.
It is recommended to install an approved current operated type Earth Leakage Circuit Breaker (ELCB) or Residual Current Circuit Breaker (RCCB) of 10mA sensitivity and higher than rated current (Refer to table).
It is recommended to install an approved type Miniature Circuit Breaker (MCB) or Molded Case Circuit Breaker (MCCB) of higher than appliance rated current (Refer to table).
Ensure that the wiring can supply the necessary amperage (Refer to table).
This appliance must be permanently connected to the electrical supply through a Double Pole Linked Switch above rated current (Refer to table) and having contact separation of at least 3mm in all poles incorporated in the fixed wiring. The switch must be out of reach from user in the bathroom.
Do not share the electrical supply with other appliances.

Table : Electrical Loading Table

HEATER ELECTRICAL LOADING		MINIMUM CONDUCTOR SIZE
Voltage (Va.c.)	Power (kW)	Conductor Size (mm2)
220 to 240	1.37 to 1.63	2.0
	2.50 to 3.00	2.5

Switch off the electrical mains.
Refer to table for correct cable size.
Remove installation cover screws. Gently lift up the cover.
Connect electrical wire as follow:
Check that the wiring connection is correct and properly tightened.
Replace the cover.
Provide sticker label if two heater ON / OFF switches are used to control it.

Operating Procedure

The first operation and heating of the appliance must be observed by the installing technician after water and electrical connection have been made and heater tank filled with water, before switching on the electrical supply.

Installation of storage water heater

- Isolation barrier - ultimate safety for storage water heater
- hot water piping installation
- Stainless steel stopcock
- Safety valve
- Drain Pipes
- Check Valve
- Not Included Wiring Point
- 1 year installation warranty

Storage Water Heater Installation

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