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Section G: Install Jacket
lnstall Jacket:
1.
f)ackaqecl boilers - install top jacket panel.
'2.
Non-packaQed boilers - refer to instmctions
packed in
.j:rcket canon. The following must be complete before
.jat'kct is installed:
o
ltoilerl-r'u'drost.aticallypressure-tested. Seepage 13.
o
plr.res lbr unused tappings installed. See Control
Tapl;ing 1'able. page 13.
supply and return piping installed. See paqes l{
through 19.
cleanout plates, flue collar and flue collector hood
installed. See pages I - 12.
Section H: Pipe Tankless Heaters
To pipe tankless heaters:
l.
Size ltiping no smaller than heater inlet arrd outlet.
2.
Autonr:ltic mixing valve must be inst.allcd. See Figure
20. Follorv manulircturer's
instructions
to install.
ll.
F-lou, regulating valve ntust be installed. Size according
to conlinuous
draw of heater. See Table below. Follow
nranulhcturer's
instructions
to install.
T A N K L E S S H E A T E R R A T I N G S T A B L E *
T A N K L E S S
H E A T E R
M O D E L
C O N T I N U O U S
D R A W G P M
I N L E T A N D
O U T L E T
T A P P I N G S
78-24
6 . 5
3 t 4 "
GPM hcatccl frorn 4O')F to lzlOoF (lOOoli lcmperature
r i s e ) w i t h 2 O O 0 F b o i l e r w a t e r t e n t p e r a t u r e .
Continuous
clraw
no recovelv oeriod.
Operating control with small ad-iustable dilferential
scale is recommended. Install in tempererturc control
tapping in he:rter plate.
Multiple tanklcss heaters (see F-igtrre 20):
a.
Use colcl water supply header with individual rist'rs
to each healer. Size heacler by increasing one pipt,
size lbr cach aclditional hcater.
ir.
Use hot water outlet lre:rcler with individual riscrs
to each healcr. Size heaclt:r by increasing onc lti1tt'
size lbr c:rch additionzrl heater.
c.
Do rrot pipe nrultiple heaters in series.
In hard water areas, sollen cold domestic supply warcr
to heaters to prcvcnt lime build-up.
ALTERNATE
t . '
../
TO AUTOIlATIC
I'IIXING VALVE
A N D P I P I N G
4 .
5 .
6 .
Tankless Heater Piping
Figure 20
2 0
ALTERNATE
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