h',!_,!1_i i 4 _<'_!_,l7[.I:
9. MAINTENANce.
l-*! [€l _L'I_IP.t.
1 Disconnect this boiler from the gas supply piping
durung any pressure testing of the gas system
2 Check pipes adjacent to cold walls or in unheated
spaces Insulate and tape them Lfnecessary to be
sure they can t freeze up Keeping the water moving
at all times will reduce the likelihood of freezing See
Section 3 for antifreeze instnictions
3 If there is considelable foreign matter in the boiler
water the boiler should be shut down and allowed to
cool then drained and thoroughly flushed out Use
the dram valve at the bottom of the return
connect,on to drain the boiler Pipe the dram cock to
a suitable drain or containment dewce _f antifreeze is
used Flush the system to remove remaining matter
If there is evidence that hard scale has formed on the
internal surfaces, the boiler should be cleaned by
chemical means as prescribed by a quahhed water
treatment specLal_st
There must not be signs of continuous wetness at the
chimney If s_gns of continuous wetness are
observed, a qual_hed service agency must be
consulted to modify the vent confLguratLon to prevent
the tormatlon of condensate
i:II Ill7,_!ll'lllVi_li/ll :loll!!llh"lll--'l"
Daily boiler observatLon can be performed by the owner
If any potential problems are found, a quahfLed installer
or service techmc_an,'agency must be notffued
Remove any combustible materials, gasohne and
other flammable hqulds and substances that generate
flammable vapors from the area where the bouler LS
contained Make certain that the boiler area has
ample air for combustion and venhlation and that
there are no obstructions to the free flow of air to
and from the boiler
2 Observe general boiler conditions (unusual noises,
vibrations, etc )
Observe operatLng temperature and pressure on the
combmatlon gauge located on the left side of the
boiler Boiler pressure should never be higher than
5 psl below the rating shown on the safety rehef
valve {25 ps_g max,mum for a 30 psLg rating, 45 pslg
maximum for a 50 pslg rating) The valve rating can
be found on the top of the safety relief valve (see
Figure 5 for location of the safety relief valve) Boiler
temperature should never be higher than 250 GF
4 Check for water leaks in boiler and system piping
5 Smell around the apphance alea for gas It you smell
gas. follow the procedure listed m the
LLghtJng, Operatlng Instructions m Section 7
lllhll I 1 [! li'illrlll / i I I :[o] I I 11tl li'lllll-'t :
I Flush float-type low-water cut-off (if used) to remove
sedLment from the float bowl as stated m the
manufacturer's instructions
Uill_'5 [oli_i/ l lii'llli,_i / I: i :io]I I 1 :g h,'_lil..'ti
1 Check boiler room floor dlalns fol proper
functioning
2 Check function of the safety relief valve (monthly
unless speofled otherwise by manufacturer) by
performung the follo_,,ungtest
a Check valve pLpmg to determine that ,t is
properly installed and supported
b Check boiler operating temperature and pressure
c Lift the ti'y level on the safety relief valve to the
full open position and hold Ltfor at least five
seconds or until clean water LSdischarged
Release the try lever and allow the valve to close
If the valve leaks, operate the lever two or thlee
times to clear the valve seat of foreign matter It
may take some t_me to deteu'mne _tthe valve has
shut completely
e If the valve continues to leak. it must be replaced
before the boiler is returned to operation
f Check that operating pressure and temperature
have returned to normal
g Check again to confirm that valve has closed
completely and is not leaking
3 Test low-water cut-off (if used) as descnbed by the
manufacturer
4 Test limit as described in Section 7E "Check-Out
Procedure "
5 Test function of gas safety shut-off features as
described by gas valve and ugnution control
manufacturer
6 Cycle the boiler at least once and check operation of
the vent damper
29
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