Boiler Control 284
D 284
05/16
Replaces: 08/14
Installation & Operation Manual
© 2016 284_D - 05/16
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A Watts Water Technologies Company
Multi-Staging
A Flexible Solution for Commercial & Multi-Residential Heating Plants
The Boiler Control 284 is designed to operate up to four
boilers to accurately maintain a target water temperature.
The 284 operates both condensing & non-condensing boilers
that are either modulating, single stage or two stage to
provide a flexible, cost effective mixed boiler plant solution
with better system performance.
The target water temperature is based on outdoor temperature
reset or a fixed setpoint for space or process heating
applications. Additional loads supplied by the 284 include
domestic hot water & fixed setpoint heating. Boiler equal
run-time rotation, stand-by primary pump operation & pump
exercising all increase boiler plant reliability.
The 284 communicates with a Building Automation System
(BAS) using BACnet
®
IP or Modbus
®
for remote monitoring
& adjustment capability. tekmarNet
®
Thermostats or a tN4
Gateway 483 can be added to optimize system performance
& provide remote monitoring capability.
BACnet is a registered trademark of ASHRAE.
ASHRAE does not endorse, approve or test products
for compliance with ASHRAE standards. Compliance of
listed products to the requirements of ASHRAE Standard
135 is the responsibility of BACnet International (BI).
BTL is a registered trademark of BI.
Features
• Outdoor temperature reset
• Programmable schedules
• tekmarNet
®
compatible
• Control up to four boilers
• Condensing & non-condensing boiler groups
• Modulating, single stage or two stage
• Boiler isolation valves
• BACnet
®
IP or Modbus
®
communication
• Primary pump sequencing
• DHW priority
• Setpoint operation
• Combustion air damper control
• Energy, flow & pressure monitoring
Benefits
• Reduce energy costs
• Prolong equipment life
• Provide boiler redundancy
• Provide primary pump redundancy
• Remote monitoring & adjustment options
• Combine mid & high efficiency boilers to lower
component cost
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