Required minimum clearances for combustibles
For servicing access, a 2ft clearance is recommended to the
The following specialized tools may be required if converting
from natural gas to LP:
Greentherm T9900 SE/i
Please follow these instructions. Failure to follow
instructions may result in:
▶ Damage or injury.
▶ Improper operation.
▶ Loss of warranty.
▶ The water heater must be installed by a qualified installer in
accordance with these instructions. If improperly installed,
a hazardous condition such as explosion or carbon
monoxide poisoning could result. Bosch
Thermotechnology Corp. is not responsible for improperly
Common installation practice is to first determine the path and
method of venting, then design the piping layout.
Proper location for installing your heater
Carefully select the location of the water heater. For your safety
and for proper heater operation, you must provide combustion
air to the heater and properly vent the exhaust gases.
Follow the guidelines below:
▶ 1. Locate the heater where venting, gas and plumbing
connections are feasible and convenient.
▶ 2. The hot water lines should be kept short and insulated to
save energy. It is recommended to locate the water heater
as close as practical to the most frequently used hot water
Risk of appliance freezing!
▶ The water in this water heater is cold and always remains
cold except for the times the burner is on. In the event of
power outage in conjunction with freezing temperatures,
the heater should be drained.
See chapter 7.2, page 57 "Winterizing" for draining
Greentherm T9900 SE/i – 6 720 813 635 (2019/03)