Pressure and Temperature Relief Valve

installation
Pressure and Temperature Relief Valve
TYPICAL INSTALLATION OF CONTROLLED PRESSURE HOT WATER SYSTEM
2. Should the main
relief valve become
blocked, this auxiliary
will blow out and
relieve the valve.
Tempering
Valve
Untempered hot water
(eg kitchen and laundry)
Drain Line
1.Stainless Steel Lever
action
PTR
Relief Valve
6. The valve is a dry
spring design. It has
a high temperature
silicon boot that shields
the spring from any
corrosive elements
in the water supply,
that may build up and
prevent the valve from
relieving.
Controlled
Tempered water
(50°C to chosen
outlets, eg bathrooms)
pressure
storage
water heater
Drain Line
Mains Supply
3. The valve has a high
temperature seal that
remains flexible and
continues to perform
at temperatures that
cause most organic
elastomers to become
brittle and crack.
5. Forged DR brass body.
Expansion
Control Valve
LEGEND
= Hot
= Cold
Pressure
Non-Return
Limiting Valve Isolating Valve
= Mix
Drain lines must have continuous fall.
4. Polyethylene plastic
sheath to protect the
probe from corrosive
elements in the water.
INSTALLATION REQUIREMENTS
In addition to these instructions, PTR Valves must be installed in
accordance with AS/NZS3500 National Plumbing and Drainage
Code. All local government requirements must be met and the
PTR must be installed in line with the water heater manufacturer’s
instructions. Valve rated to 10Kw.
The PTR valve to be fitted must comply with the water heater
manufacturer’s rating label. The kw rating of the valve should be
greater than the kw rating of the water heater. All this information
is found on the rating plate of the valve, and on the rating label
on the side of the heater.
7. Colour coded valve rating
plate for ease of identification
Each valve is individually tested and calibrated to ensure that it meets the correct pressure specifications.
Designed and manufactured to meet Australian Standard AS1357.1, under licence No. 2639 and meets
AS4020, Drinkable Water Standard. Manufactured under Quality Assurance ISO 9001 and ISO 9002 (UK)
Suitable for either horizontal or vertical installations. The valve is designed to automatically reseat after
each action.
Caution: Water escaping
from the drain line may
be hot and could cause
scalding. This valve is a
Safety Valve. Excessive
discharge from the drain
line or operation of the
small auxiliary relief
valve opposite the drain
can mean a malfunction
within the system. Switch
off the energy source and
call a plumber or service
person.
*Flush the plumbing lines before connection. Deposits left
in the line can lodge under the valve seat causing the valve
to leak.
*Apply thread seal tape to the thread. Be sure not to use
excessive amounts of thread seal that could hang over the
thread, break off and lodge under the valve seat, causing
it to leak.
*Screw the valve into the PTR socket.
*Do not use a wrench on the valve body. Use the spanner
flats provided.
*No valve, taps, or other isolating valves are to be fitted
between the PTR and the water heater.
*Install a drain line of the same nominal pipe size as the
valve, in accordance with AS/NZS3500.4. The drain line
must have a continuous fall.
*Test the manual relief by lifting the lever. Water should flow
out of the relief valve. It is recommended that the manual
relief be operated every 6 months, so as to flush out any
deposits that may accumulate under the seal.
*CAUTION: “Danger of scalding” This valve relieves hot water.
AVG PTR
*Australian Valve Group (AVG) Pressure & Temperature Relief
valves should be installed by a licensed plumber in accordance
with AS/NZS3500.
* If the valve probe is damaged in any way do not install the valve.
Return it to your valve supplier and obtain a replacement. Clean
out any foreign matter from the threaded inlet water connection
to the water heater.
The tempering valve may
be installed at the point
of use, but there must be
a minimum 1 metre pipe
run between the valve
and the outlet tap.
Australian Valve Group (Head Office)
Unit 2, 9-11 Noble St, Kewdale, Perth, Western Australia 6105
Fax: +61 8 9353 2689 Tel: 1800 AVG AUS (284 287)
FOR MORE INFORMATION VISIT OUR WEBSITE AT WWW.AVG.NET.AU
Pressure & Temperature Relief Valve
INSTRUCTIONS
PTR
PTR
Pressure and Temperature Relief Valve
COLOUR
RATING PLATE
ECV
VALVES
PTR
VALVES
The Pressure and Temperature Relief valve (PTR) is designed to relieve the
increase in pressure caused by water expansion during the normal heating
cycle. The valve will then relieve the increase in pressure by releasing drips
of hot water to the drain line. Should the electrical temperature cut-out
device cease to operate correctly, the water will overheat. The temperature
probe will then open the PTR valve and discharge hot water to the drain
line. It is recommended that an ECV be fitted to the cold water supply line.
This will relieve cold water, not hot water, during the heating cycle, saving
energy and increasing the life of the PTR. Some lcoal governments make
it mandatory to install an ECV in the cold water line. PTR and ECV valves
are safety valves and should be replaced every 4 years.
Black
Black
Blue
Blue
Green
Green
Green
Red
Red
ECV 15/600
ECV 20/600
ECV 15/700
ECV 20/700
ECV 15/850
PTR 15/700
INLET PRESSURE CONTROL
Red
Red
Orange
PTR VALVE FUNCTION
High pressure may cause excessive discharge and possible premature failure
of the operating relief valve (see table). The maximum water pressure
usually occurs during the night, at the time of lowest water usage. In
any mains pressure water heater installation if the water pressure exceeds
80% of the nominal set pressure of the operating relief valve, a Pressure
Limiting Valve must be fitted to the cold inlet. If a cold water expansion
control valve is fitted it will have a lower set pressure than the PTR valve
and therefore will be the main operating relief valve.
PTR 15-20/850HL
Pressure & Temperature Relief
Valve complete with 360° swivel
hot water outlet
PTR 20/700
Insulation
available
according to
AS3500.
PTR 15/850
PTRE 20/850
PTR 15/1000
PTRE 15/1000
ECV 20/850
ECV 15/1200
PTR 20/1000
ECV 15/1200
ECV 20/1200
ECV 15/1400
PTR 15/1400-HTT
PTR 15/1400
PTRE 15/1400
Rating plate colours
The valve rating plates are colour coded to make
selecting the correct valve easy. Simply match the PTR
valve to an ECV with a rating plate of the same colour.
PTR20
Pressure & Temperature
Relief Valves
PTR15
Pressure & Temperature Relief Valves
1000
850
1400 15mm (1/2”) BSP
1000 15mm (1/2”) BSP
850
15mm (1/2”) BSP
700
15mm (1/2”) BSP
SET PRESSURES FOR WATER HEATER VALVES
Without Expansion Control
PTR-HTT
With Expansion Control Valve
20mm (3/4”) BSP
20mm (3/4”) BSP
Valve
PTR Valve
Setting
kpa
PLV required if
mains pressure
exceeds:
Pressure Limiting
Valve setting kpa
Expansion
Control Valve
setting kpa
PLV required if
mains pressure
exceeds:
Pressure
Limiting Valve
setting kpa
700
680
500
700
550
350
850
680
500
700
550
350
1000
800
600
850
680
500
1400
1120
600
1200
960
600
Features
PTR SPECIFICATIONS
Model
DN SIZE
COLOUR
CODE
PRESSURE
RATING
INLET
OUTLET
EXPANSION
RATING
PTR15/1400
15
RED
1400 kpa
1/2” male
1/2” female
10 KW
PTR15/1000
15
GREEN
1000 kpa
1/2” male
1/2” female
10 KW
PTR15/850
15
BLUE
850 kpa
1/2” male
1/2” female
10 KW
10 KW
PTR15/700
15
BLACK
700 kpa
1/2” male
1/2” female
PTR20/1000
20
BLACK
1000 kpa
3/4” male
3/4” female
46 KW
PTR20/850
20
BLUE
850 kpa
3/4” male
3/4” female
46 KW
20
BLACK
700 kpa
3/4” male
3/4” female
46 KW
PTR20/700
WARRANTY
This valve is factory set and cannot be serviced or repaired in the field. The Australian Valve Group (AVG) will not honour any warranty claim where these instructions
have not been followed, or where thevalve has been tampered with or subjected to obvious abuse.
DISCLAIMER
Every care has been taken in the preparation of these instructions, which have been issued as a guide only. Compliance with the requirements of Local Authorities is required at
all times. These requirements may change from time to time. Always be aware of the local requirements. Subject to any statutory obligations and manufacturers warranties no
liability can be accepted for any losses, consequential or otherwise which may arise or be said to have arisen from relying upon the contents of this installation instruction. As to
the fitness of any particular product for any particular purpose, use or application, The Australian Valve Group Pty Ltd reserves the right to modify designs and specifications and
to withdraw and introduce products at any time without notice.
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•
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Insulation
available
according to
AS3500.
TM
WaterMark
AS 1357.1
Lic 2639
2639
AS
1357.2 Lic
SAI
SAI Global
PTRE15
Pressure & Temperature Relief Valves
1400
1000
15mm (1/2”) BSP – 25mm Extended Body
15mm (1/2”) BSP – 25mm Extended Body
360° Swivel Hot Water Outlet
Forged DR Brass Body
Individually tested & calibrated
Insulation & cables included
PTR 15/1400HTT
Pressure & Temperature
Relief Valve
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