User Guide

Part number 550-142-055/0411
7
GV90+ gas-fired water boiler — User’s Information Manual
MONTHLY
Maintenance
Check boiler interior piping
1. Removeboilerjackettop.
2. Visuallyinspectforleaksaroundinternalpiping,circulators,reliefvalveandotherttings.
Immediatelycallaqualiedservicetechniciantorepairanyleaks.
 Haveleaksxedatoncebyaqualifedservicetechnician.Continualfreshmakeup
waterwillreduceboilerlife.Mineralscanbuildupinsections,reducingheat
transfer, overheating cast iron, and causing section failure.
Do not use petroleum-based cleaning or sealing compounds in boiler
system. Severe damage to boiler and system components can occur, resulting in
possible severe personal injury, death or substantial property damage.
User maintenance procedures (continued)
Check venting system
1. Visuallyinspecttheuegasventpipingforanysignsofblockage,leakageordeterioration
ofthepiping.Notifyyourqualiedservicetechnicianatonceifyoundanyproblem.
Failure to inspect the vent system as noted above and have them repaired by a
qualifed service technician can result in vent system failure, causing severe per-
sonal injury or death.
Check automatic air vents (if used — use automatic air
vents with diaghragm-type expansion tanks only)
1. See Figure 3.
2. Removethecapfromanyautomaticairventinthesystemandcheckoperationbydepress-
ingvalve“B”slightlywiththetipofascrewdriver.
3. Iftheairventvalveappearstobeworkingfreelyandnotleaking,replacecap“A”,twisting
allthewayon.
4. Loosencap“A”oneturntoallowventtooperate.
5. Have vent replaced if it does not operate correctly.
Figure 3 Automatic air vent