Thermo Products COMBOMAX Models from 8 kW to 24 kW : 240 Volts ( single phase ) - Manual (Page 13)

THERMO 2OOO INC.
500
,
9
ième
Avenue
, C.P. 639,
R
ICHMOND (
Q
UÉBEC) JOB 2HO
T
ÉL.:
(819) 826-5613 F
AX:
(819) 826-6370
Section 5 : Maintenance
Regular boiler maintenance will ensure trouble-
free service for many years. It is recommended
that you set up and follow a maintenance
program. All components fail eventually. The use
of incorrect replacement parts or disregarding
safety procedures and warnings during repairs
may reduce the boiler safety level and shorten its
useful life.
The owner should set up the following
maintenance program.
5.1 BOILER WATER PIPING :
Annual visual inspection.
Check for leaks close to connections, unions and
valves. Repair as needed.
5.2 BOILER CIRCUIT SAFETY VALVE:
Monthly inspection.
To be checked manually to ensure safety and
proper operation. Air trapped in the boiler is bled.
Make sure the water is discharged to a floor drain
and that no bystander is splashed. Use the lever
to open the safety valve. Hot water should come
flowing out. Upon releasing the lever, the safety
valve should shut tight. If it does not, it must be
replaced by an identical or equivalent model.
Never plug a safety valve.
5.3 DOMESTIC PIPING :
Annual visual inspection.
Check for leaks close to connections, unions and
valves. Repair as needed.
5.4 DOMESTIC CIRCUIT SAFETY VALVE
(TEMPERATURE & PRESSURE):
Annual inspection.
To be checked manually to ensure safety and
proper operation. Air trapped in the boiler is bled.
Make sure the water is discharged to a floor drain
and that no bystander is splashed. Use the lever
to open the safety valve. Hot water should come
flowing out. Upon releasing the lever, the safety
valve should shut tight. If it does not, it must be
replaced by an identical or equivalent model.
Never plug a safety valve.
5.5 SCALE BUILD-UP :
Monthly inspection.
This problem occurs infrequently under very
specific conditions. The main symptom is a drop
in domestic water pressure. A water softener will
solve the problem.
A proper chemical cleaning is a more efficient
solution. A scale dissolving product may be used,
paying careful attention to the manufacturer’s
recommendations. Do not use muriatic or
hydrochloric acid-based products. Carefully flush
the products after use. Contact your plumber to
remove scale build-up from the coil.
The manufacturer’s warranty DOES NOT
cover problems caused by improper
installation or maintenance. If the safety valve
opens periodically, it may be due to the
expansion tank. Immediately call a qualified
technician to appraise and repair the problem.
NOTE: To prevent tank breakage, trapped air
must periodically be bled from it by opening
the safety valve.
Before manually opening the safety valve,
make sure no bystander will accidentally be
splashed by the hot water. The discharged
water should be directed to a floor drain to
prevent scalding and damage.
DANGER !
WARNING !