Operating Instructions and Installation Instructions

ULTRAMAX PB 65 - 120
9 L290 ©MHS Boilers 13/12/2010
2.0 Production Description cont.
2.4 Compliance
The Ultramax PB condensing boiler is identified with CE-0063BQ3008 and is compliant with the following
standards and guidelines.
- DN EN 677
- EN 60 335
- EN 55 014-1/2
- 90 / 396 / EWG
- 89 / 336 / EWG
- 73 / 23 / EWG
- 92 / 42 / EWG
- DIN EN 483
- DIN EN 297
- DIN EN 656
- Compliance with NOx limits required in accordance with 1 BlmSchV§7 (2).
The Ultramax PB condensing boiler represents a system with a closed heat exchanger independent of room
air. The air for combustion is provided through a ventilation system. The condensing boiler is used for closed
hot water heating systems. Boiler performance is modulated and adjusted to the momentary demand in heat
through the integrated controls.
2.5 Heat Exchanger
The 316L Stainless Steel Heat Exchanger is made of flat coils and provides for an exchange of heat from the
exhaust to the boiler water. Condensation takes place at the upper part of the heat exchanger. Any
condensate is discharged downward at the rear portion of the heat exchanger.
2.6 Regulations and Control Unit
The regulation and control unit assumes the function of automated firing as well as controlling the modulating
operation of the boiler, including weather-regulated heating control and hot water conditioning, expandable
through Clip in module to another mixed heating circuit. The display signals the operational readiness of the
boiler and the automated firing controls monitor the technical safety aspects of the operation.
2.7 Accessories
2.71 QAA73 Room Unit
The QAA73 Room Unit Interface (available as an optional extra) not only
provides room temperature control for day set-point, night-time set-point
and frost protection, but also includes individual day programming for
heating and hot water control, and also displays the boiler error message, if
set to the OpenTherm Plus mode. With the use of an AGU2.500 Clip-In
Module, and additional Heating Circuit can also be time controlled.
For further information concerning installation and programming, please
refer to the separate QAA73 Installation and Maintenance Manual.
2.711 QAA70 Room Unit
The QAA70 is a Room Temperature Controller (available as an optional
extra) for use with the RVA 47 Cascade Manager.
For further information concerning installation and programming, please
refer to the separate QAA70 Installation and Maintenance Manual.