Lochinvar HERALD HCB116CE, Installation Manual

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1.0 INTRODUCTION

The Lochinvar Herald range is a floor standing gas fired condensing boiler. The equipment comprises a
stainless steel radial burner assembly and a heat exchanger that permits fully condensing operation.

The burner is initiated by a full electronic ignition sequence control that incorporates a spark ignition and a
flame rectification device for supervision of the flame.

The output from the boiler is regulated by a variable speed combustion fan and gas/air ratio controls to maintain
the correct combustion at all levels of modulation. This configuration allows modulation down to 20% of the
rated output.

For the correct operation of the boiler, it is essential that a suitably sized pump is utilised to maintain a constant
water flow rate through the heat exchanger. A suitable shunt pump is available as an ancillary option from
Lochinvar Ltd. See section 14.2.2

This equipment is intended for use on Group H Natural Gas (2
nd
Family) and LPG propane (3
rd
Family). The
information relating to propane firing is to be found in Section 18.0: LPG FUEL. This equipment MUST NOT
use gas other than that for which it has been designed and adjusted.

This equipment must be installed by a competent person, registered with a H.S.E. approved body. All
installations must conform to the relevant Gas Safety and Building Regulations. Health & Safety requirements
must also be taken into account when installing any equipment. Failure to comply with the above may lead to
prosecution.

If the equipment is to be connected to an unvented (pressurised) system, care must be taken to ensure all
extra safety requirements are satisfied should a high or low-pressure condition occur in the system.

The equipment is designed for direct connection to a flue system.

Ancillary Options:

Primary shunt Pumps See section 14.2.2

DHW vessel sensor LL200009A

Outside sensor for direct weather compensation of boiler LL200010A

Con-X-Us Remote Monitoring App LL100071724

Pressurisation Unit
o
Wall mounted – single pump CHCWM1
o
Wall mounted – twin pump CHCWM2

Condensate Neutralisation Kit KIT2000

Low Velocity Header Contact Lochinvar Limited

Flue System Components See flue assemblies guide
Plate system separator Contact Lochinvar Limited

ModBus Interface Module LL100297842

BACnet Interface Module LL100297828