Cer

tifie

d Pr

oduc

t

AS4032.2 Lic. No. 1593SAI-Global

AustralianStandard

Part No. IS275Rev - 09584

INSTALLATION INSTRUCTIONS

HeatGuardTM

RMC HeatGuard cmyk cov.pep 9/21/05 2:09 AM Page 2

IS1268 covers.pdf 1 11/10/10 11:35 AM

Rev A - 09584

1

Choosing the correct model . . . . . . . . . 3

How to install the valve . . . . . . . . . . . . 4

How to set the desired temperature . . . . 6

Installation diagrams . . . . . . . . . . . 7-11

Valve specifications . . . . . . . . . . . . . . 12

Troubleshooting . . . . . . . . . . . . . . . . 17

Maintaining the valve . . . . . . . . . . . . 19

CONTENTS

Insulation . . . . . . . . . . . . . . . . . . . . . 16

2

Failure to comply with all aspects of theseinstructions may result in unsafe performance. Allinstallations must comply with AS/NZS 3500 andany State or Local Authority requirements.

Ensure you have chosen the correct model HeatGuard for theapplication.

Standard model: HeatGuard (blue cap)

High Performance model: HeatGuard Ultra (orange cap)

Low Pressure model: HeatGuard Solar HF (orange cap)

For instantaneous systems, use ONLY HeatGuard Ultra

For low pressure systems, use ONLY HeatGuard Solar HF

Do not use ANY HeatGuard model on steam-suppliedsystems.

Check site parameters against the specifications of the chosenvalve. If the site conditions are outside those specified for thevalve, they must be rectified prior to installing the valve.

CHOOSING THE CORRECT MODEL

CHECKING SITE PARAMETERS

3

• It is recommended the valve be installed as close as possibleto the hot water system, however it may be fitted anywhereon the hot water supply pipe if necessary.

• If the valve is fitted at the point-of-use there must be aminimum one (1) metre pipe run between the valve and theoutlet fixture.

• Insulation is provided with this valve. Insulation must be fitted in situations where freezing is a possibility.

STEP 1 Flush the system thoroughly before fitting HeatGuard.It is CRITICAL that all debris is flushed from thepipework prior to installing the valve. Not flushing thesystem properly is the most common cause ofdifficulties.

STEP 2 If the water supply is of poor quality so that the valve’sstrainers will continue to block, fit an additional filteror strainer to the system.

STEP 3 Install HeatGuard in accordance with the installationdiagrams in this booklet. Do not use excess threadsealant as this may cause the valve to fail.

STEP 4 Set the valve at the desired temperature by followingthe instructions on Page 6.

HOW TO INSTALL THE VALVE

4

STEP 5 Enter installation details on sticker provided, and affixnear system.

• Valve MUST NOT be subjected to heat during installation asthis may damage the valve internals.

• It is recommended that isolating valves be fitted to allow easyaccess to the valve if the strainers need to be cleaned.

• In situations where the hot pressure may exceed the coldpressure and on pumped ring main systems, non-return valvesMUST be fitted to BOTH inlets.

Tempering valves provide optimum performance when installedwith hot and cold supplies of equal dynamic pressure, i.e.pressure under flow conditions. (The static supply pressuresoften give NO indication of the dynamic supply pressures). It isrecommended that the hot and cold supplies to each temperingvalve be delivered via pressure control valves. In most domesticinstallations it should be possible to fit one control valve at theproperty boundary to control pressure to the whole site. Forcommercial installations it is recommended to fit a pressurecontrol valve on each inlet to the tempering valve.

ABOUT SUPPLY PRESSURES

5

• Every valve must be commissioned on-site to ensure correctdelivery of the desired mixed water temperature, asinstallation conditions can vary from site to site.

• Prior to commissioning the valve the hot water system must beswitched on and delivering hot water at a minimum of 60°C.

STEP 1 Locate the nearest outlet being supplied by the valve.

STEP 2 Open the outlet to allow a flow rate of at least four (4) litres/minute.

STEP 3 Allow the water to run for at least one minute toensure the mixed water temperature has settled.

STEP 4 Using a thermometer, check the mixed watertemperature.

Is desired temperature achieved? Yes? – go to Step 7.No? – go to next Step.

STEP 5 Adjust the valve as shown in Diagram 4 on page 15until desired mixed outlet temperature is achieved.

STEP 6 Repeat Steps 1-4.

STEP 7 Replace the cap.

HOW TO SET THE DESIRED TEMPERATURE

6

For

Cont

rolle

d Pr

essu

re W

ater

Hea

ter:

Dom

estic

Bui

ldin

g- V

alve

fitte

d at

the

Hea

ter

-

INSTALLATION DIAGRAMS

7

For

Cont

rolle

d Pr

essu

re W

ater

Hea

ter:

Dom

estic

Bui

ldin

g- V

alve

fitte

d re

mot

ely

from

the

Hea

ter

-

Whe

re th

ere

is no

Pre

ssur

e Re

duci

ng V

alve

con

trolli

ng th

e w

hole

insta

llatio

n (*

), it

isre

com

men

ded

that

the

cold

sup

ply

to th

e te

mpe

ring

valv

e be

con

trolle

d by

a P

ress

ure

Limiti

ng V

alve

(**)

of t

he s

ame

pres

sure

set

ting

as th

e va

lve

supp

lyin

g th

e w

ater

hea

ter.

8

For

Sola

r W

ater

Hea

ter:

Dom

estic

Bui

ldin

g

9

For

Hea

t Exc

hang

e W

ater

Hea

ter:

Dom

estic

Bui

ldin

g

10

For

Pum

ped

Supp

lies,

Mul

tiple

Val

ves:

Com

mer

cial

Bui

ldin

g

It is

reco

mm

ende

d th

at P

ress

ure

Redu

cing

Val

ves

are

insta

lled

for

each

val

ve to

ens

ure

any

pres

sure

fluc

tuat

ions

from

the

pum

ped

supp

ly o

r ot

her

sour

ce a

re m

inim

ised

prio

rto

sup

plyi

ng w

ater

to th

e te

mpe

ring

valv

es.

Ther

e M

UST

be

non-

retu

rn v

alve

s fit

ted

to B

OTH

hot

and

col

d in

lets

for

this

type

of

insta

llatio

n. E

asily

acc

esse

d, fu

lly s

ervi

ceab

le s

train

ers

(in a

dditi

on to

the

strai

ners

supp

lied

with

the

Tem

perin

g Va

lve)

sho

uld

be in

stalle

d on

eac

h flo

or o

r ci

rcui

t.

11

VALVE SPECIFICATIONS

Cold water supply temperature: 5°C – 30°C

Hot water supply temperature: 60°C – 90°C 1

Optimum outlet temperature range: 40°C – 50°C 2

Set temperature Must be commissionedon site to achieve desiredoutlet temperature

Accuracy of outlet temperature: ±3°C - tested to AS4032.2between 40°C and 50°C

Minimum temperature differential 15°C 3(between hot supply and outlet temperature):

Supply pressure, static: 1600kPa maximum

Supply pressure, dynamic: 500kPa maximum

Supply pressure imbalance, dynamic: 2 : 1 maximum 4(at time of commissioning)

Maximum permitted pressure variation in either supply, in order to control outlet temperature to ±3°C: ±10% maximum 5,6

(from supply pressure at commissioning)

Minimum flow rate: 4 litres/min

VALVE SPECIFICATIONS

12

Notes:1. AS/NZS 3500.4 Clause 1.9.1 requires the minimum hot water storage

temperature to be 60°C.2. For applications outside the requirements of AS/NZS 3500 and AS4032.2, it

is possible to set the valve as high as 55°C or as low as 35°C, depending onsite conditions

3. This is the minimum difference required to ensure shut-off of outlet flow in theevent of cold supply failure in accordance with AS4032.2, providing thevalve is set between 40°C and 50°C.

4. The maximum permitted ratio of supply pressures, under dynamic (flow)conditions. For optimum performance it is recommended that the hot andcold pressures at commissioning are as close as possible to equal.

5. The maximum permitted variation in either supply pressure from the pressureat commissioning in order to control the outlet temperature to ±3°C.

6. Note that rapid changes in supply pressure can result in a spike in the outlettemperature beyond ±3°C. Following a rapid change in supply pressure itmay take a number of seconds for the temperature to return to within a ±3°Climit. Steps should be taken on-site to eliminate any cause of rapid supplypressure variation.

DIAGRAM 1 – FLOW CHARACTERISTICS

Flow Rate (litres/min)

15mm 20mm

Pres

sure

Los

s (k

Pa)

13

C

M

Y

CM

MY

CY

CMY

K

Model A B C D EHeatGuard 15 121 58 37 107 61

HeatGuard 20 140 58 37 61

DIAGRAM 2 – DIMENSIONS

14

107

C

M

Y

CM

MY

CY

CMY

K

HeatGuard 15

HeatGuard 20

DIAGRAM 3 – FITTING CONFIGURATION

TURN ANTI-CLOCKWISE TOINCREASE TEMPERATURE

TURN CLOCKWISE TOREDUCE TEMPERATURE

DIAGRAM 4 – TEMPERATURE ADJUSTMENT

15

C

M

Y

CM

MY

CY

CMY

K

INSULATION

16

POSS

IBLE

CA

USE

•In

let t

empe

ratu

res

are

not

with

in s

peci

fied

limits

•H

ot a

nd c

old

supp

lies

are

reve

rsed

.

•Va

lve

cont

ains

deb

ris.

•St

rain

ers

cont

ain

debr

is.

•Fl

uctu

atin

g su

pply

pre

ssur

es.

•St

rain

ers

cont

ain

debr

is.

•In

let t

empe

ratu

res

may

hav

eal

tere

d du

e to

sea

sona

lte

mpe

ratu

re v

aria

tions

.

•H

ot a

nd c

old

supp

lies

are

reve

rsed

.

•H

ot/C

old

wat

er h

asm

igra

ted

to o

ther

inle

t.Re

fer

also

to p

oint

1.

SOLU

TIO

N•

Ensu

re in

let t

empe

ratu

res

are

with

in th

e sp

ecifi

edlim

its fo

r th

e va

lve.

•Re

fit th

e va

lve

with

Hot

/Col

d su

pplie

s fit

ted

toth

e co

rrec

t con

nect

ions

.•

Flus

h w

ater

thro

ugh

valv

ean

d cl

ean

non-

retu

rns

and

strai

ners

.•

Cle

an s

train

ers,

ens

urin

gde

bris

is re

mov

ed.

•In

stall

pres

sure

red

ucin

gva

lves

.•

Cle

an s

train

ers,

ens

urin

gde

bris

is re

mov

ed.

•Re

set v

alve

. (Se

e Pa

ge 6

.)

•Re

fit th

e va

lve

with

Hot

/Col

d su

pplie

s fit

ted

toth

e co

rrec

t con

nect

ions

.•

Che

ck n

on-r

etur

n va

lve

isno

t fou

led.

Cle

an if

nece

ssar

y.

PRO

BLEM

1.Th

e de

sired

mix

edw

ater

tem

pera

ture

cann

ot b

e ob

tain

ed o

rva

lve

is di

fficu

lt to

set

.

2.M

ix te

mpe

ratu

reun

stabl

e or

cha

ngin

gov

er ti

me

3.Ei

ther

full

hot o

r fu

llco

ld w

ater

flow

ing

from

out

let f

ixtu

re

TROUBLESHOOTING

17

•H

ot

or

cold

wat

er

supp

lyfa

ilure

.•

Stra

iner

s are bl

ocke

d byde

bris.

•In

lets fo

uled

by

debr

is.

•Fl

uctu

atin

g su

pply

pres

sure

s.

•H

ot

and co

ld

supp

lies ar

ere

vers

ed.

•N

on-r

etur

n va

lves

foul

ed

byde

bris.

•W

ater

velo

city

abov

eve

loci

tyre

quire

men

tsof

AS3

500.

1

•Re

store

inle

t supp

lies an

dch

eck

mix

tem

pera

ture

.•

Cle

an

strai

ners

and

non-

retu

rns,

ensu

ring al

lde

bris

is re

mov

ed.

Flus

h valv

e.

•C

heck

valv

e and in

let

fittin

gs

for bl

ocka

ges.

Cle

an

or

flush

asne

cess

ary.

•In

stall pr

essu

re

redu

cing

valv

es.

•Re

fit

the va

lve w

ithH

ot/C

old su

pplie

s fitte

d toth

e corr

ect co

nnec

tions

.

•C

lean

non-

retu

rns an

dstr

aine

rs, en

surin

g all

debr

is is rem

oved

.Fl

ush va

lve.

•Re

duce

wat

er ve

loci

ty (b

est

achi

eved

by fit

ting a

pres

sure

redu

cing

valv

e).

4.N

o flow

from

the va

lve

outle

t

5.Fl

ow

rate

redu

ced or

fluct

uatin

g

6.M

ixed

wat

erte

mpe

ratu

re

does

not

chan

ge

whe

nte

mpe

ratu

re

adju

ster is

alte

red

7.H

ot

wat

er

flow

s into

the

cold

wat

er

syste

m

orvi

ce

vers

a

V

8.

alve

isno

isy

18

TROUBLESHOOTINGPO

SSIB

LECA

USE

SOLU

TIO

NPR

OBL

EM(continued)(continued)

• We recommend the valve is checked annually to ensure itscontinued function. For installations with poor or unknownwater quality, or other adverse supply conditions, it may benecessary to check the valve more frequently.

• The temperature should be checked at the same outlet as wasused for commissioning in the first instance (refer to theinstallation sticker). If the temperature is more than 2°C fromthe commissioning temperature or outside the requirements ofAS/NZS 3500.4, refer to Troubleshooting guide on page 16.

• The strainers and non-return valves can be easily accessed forcleaning via the union connections.

• The valve itself cannot be serviced. If the valve fails it must bereplaced. Do not disassemble the valve other than to removethe snap-on cap, strainers and non-return valves as shown.

MAINTAINING THE VALVE

19

NOTES

4

NOTES

4

CUSTOMER SERVICE:

Phone: 1800 810 803 Fax: 1800 062 669

www.relianceworldwide.com.au

Reliance Worldwide, a division of GSA Industries (Aust.) Pty. Ltd. ABN 71 004 784 301

RMC HeatGuard cmyk cov.pep 9/21/05 2:09 AM Page 1

© All Rights Reserved 2012

www.rwc.com.au

Reliance Worldwide Corporation (Aust.) Pty. Ltd.ABN 71 004 784 301

© All Rights Reserved 2016