Bosch 125HX NG User Manual
Replacement Parts available from North American
Distributor
CONTROLLED ENERGY CORP.
340 Mad River Park
Waitsfield, Vermont 05673
Phone 800-642-3111
Fax (802) 496-6924
www.controlledenergy.com
techsupport@controlledenergy.com
VULCANO Termodomésticos S.A.
Estrada de Cacia
3801 - 856 Aveiro - PORTUGAL
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© 2 0 0 1 C o n t r o l l e d E n e r g y C o r p o r a t i o n ,
W a i t s f i e l d , V T a l l r i g h t s r e s e r v e d
INSTALLATION CHECKLIST
GAS LINE SIZE
Natural Gas
Nominal Iron Pipe Size*
1/2"
3/4"
1"
MAXIMUM LENGTH
10'
40'
150'
Liquid Propane
Semi-rigid Tubing
1/2"
5/8"
3/4"
7/8"
MAXIMUM LENGTH
NOT
RECOMMENDED
20'
60'
150'
* Flex tubing greatly reduces capacity and, therefore, is not recommended.
Minimum Vent Size* and Height
Minimum Diameter
Minimum Height**
5 inches
6 feet
* NOTE: Vent size must not be restricted. Installation must comply with national fuel gas code venting requirements
for a 117,000 Btu Category I appliance and any applicable local codes.
Water Pressure
For installation on well systems, insure that the minimum pressure tank setting is between 30-50 psi.
** NOTE: Minimum vent height must be 6 feet, provided there are no elbows. Termination of the vent must be 2
feet above any obstructionwithin a 10 foot radius of vent pipe. Consult your gas utility or National Gas Fuel Code
if vent will have elbows or share venting with another appliance. The vent connector should have as much vertical
rise as possible (minimum 12") before any horizontal run.