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1.0 General Information
1.1 Product description
The KD NAVIEN product is a fully automatic, wall mounted, pre-mix room sealed fan powered,
balanced flue gas domestic combined heat and power unit for use with G25/G20 natural gas only.
The product incorporates a Stirling engine delivering up to 1.1 kW of electrical power and a fully
modulating gas control system with direct burner ignition.
The KD NAVIEN NCM-1130HH product has a 30kW heat output.
The product incorporates a stainless steel heat exchanger.
The product is designed for use with open vented primary fully pumped water systems and also
sealed systems up to 3 bar, with an indirect hot water cylinder.
Note that if thermostatic radiator valves are installed, the thermostat must be in the same room
as a lock shield radiator.
The product incorporates an electronic fault diagnosis system and display to facilitate rapid
identification of any fault conditions. Incorrect use of this product constitutes a safety hazard.
The product must at all times be operated in accordance with these and the KD NAVIEN NCM-
1130HH User Instructions as well as any subsequent instructions issued by KD NAVIEN.
This product shall be installed by appropriately trained KD NAVIEN engineers and in accordance
with the current Gas Safety (Installation and Use) Regulations (GSIUR) and also relevant Building
Regulations (particularly Part P)
All installation electrical work must be carried out ONLY by a trained electrician to the
requirements of the current edition IEE Requirements for Electrical Installation (BS 7671) and
Engineering recommendation G83 /1 – for the connection of small-scale embedded generators
(SSEG)(up to 16A per phase) in parallel with public low-voltage distribution networks.
In addition, all proposed work on the domestic mains electricity circuits in the users premises
must be notified to KD NAVIEN before work commences for the entire period of the trial.
Before commencing any electrical work in the property the product must be isolated at the
securable isolator and the gas cock turned off
.
Navien stirling engine m-CHP installation manual
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