GmbH – IWH-1.5E
Instantaneous Gas Water Heater
Installation and Operating Instructions (version 3.3)
The IWH-1.5E instantaneous water heater is designed according BS EN 1949:2011 +
A1:2013 “Specification for the installation of LPG systems for habitation purposes in leisure
accommodation vehicles and accommodation purposes in other vehicles”. This water heater
is not for use in space heating or marine application.
WARNING: If the information in these instructions is not followed exactly,
a fire or explosion may result causing property damage, personal injury or loss of life.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this
or any other appliance. WHAT TO DO IF YOU SMELL GAS
Evacuate all persons from the vehicle.
Shut off the gas supply at the gas container or source.
Do not touch any electrical switch, or use any phone or radio in the vehicle.
Do not start the vehicle’s engine or electric generator.
Contact the nearest gas supplier or qualified service technician for repairs.
If you cannot reach a gas supplier or qualified service technician, contact the
nearest fire department
Do not turn on the gas supply until the gas leak(s) has been repaired.
Installation and service must be performed by a qualified installer, service
agency, OEM or the gas supplier.
If you want an additional safety, we recommend an additional extern tempering valve, which
restricts the water temperature to 50°C.
For most applications it is not necessary. Only if you slow down the water flow under 2l/min
very quick, the cold water has already temperatures over 20-25°C and you are not using any
mixing tab, the temperature might rise over 60°C for a short time (<1 min).
Critical Installation Warnings
● Install in recreation vehicles only. RV’s are recreation vehicles designed as temporary
living quarters for recreation, camping, or travel use having their own power or towed by
another vehicle.
● All combustion air must be supplied from outside the RV, and all products of combustion
must be vented to outside the RV.
● DO NOT vent water heater with venting system serving another appliance.
● DO NOT vent water heater to an outside enclosed porch area.
● Protect building materials from flue gas exhaust.
● Install water heater on an exterior wall, with access door opening to outdoors.
● DO NOT modify water heater in any way.
● DO NOT alter water heater for a positive grounding system.
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