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HMF single duct cabin unit
HMF single duct cabin unit

HMF – Single duct cabin unit

Halton HMF is pressure independent (VAV/CAV) or pressure dependent (VAV) single duct cabin unit with intergrated reheater.

Overview

  • Pressure range from 200 Pa up to 1000 Pa
  • Airflow range 120 m3/h…500 m3/h
  • 230 VAC ±10%, 50/60 Hz
  • Inbuilt airflow measurement (pressure independent models)
  • Damper min. / max. position settings (pressure dependent models)
  • Triac controlled reheating coil(s), adjustable heating power (PWM) 0…100%
  • Master/slave functionality: several cabin units can be controlled by one control panel
  • Internal fuses included
  • All parameters can be set onsite during commissioning by external device or preset at the factory
  • All cable connections with fast connectors
  • Easily tailored for different types of installations
  • 90 °C safety switch with state detection and manual reset
  • Minimum flow alarm (pressure independent model) and inbox temperature measurement with overheat limit to cut-off reheater power
  • HMF cabin unit is supplied with control panel and interconnection cable
  • MED approved for B-0/B-15 installations

Specification

Halton HMF is pressure independent (VAV/CAV) or pressure dependent (VAV) single duct cabin unit with intergrated reheater. Pressure independent VAV or CAV operation is facilitated by continuous airflow measurement and damper regulation by intelligent controller. Pressure independent HMF adapts to variations in supply ductwork pressure levels and maintains individual fresh supply airflow rate to each cabin. Pressure dependent VAV operation is facilitated only by damper regulation by intelligent controller. Pressure dependent HMF adapts to room temperature changes by regulating airflow between pre-set minimum and maximum damper positions.

Dimensions and Weight

HMF DIMENSIONS, unit material thickness 0.5 mm

L B H F A ØD1 male/female ØD2 male
HMF-100 590 490 190 83 45 199/201 99
HMF-125 590 490 230 115 45 249/251 124
HMF-160 590 490 230 115 45 249/251 159

Note: male connection: outer dimension, female connection: inner dimensions. Note: Standard dimensions, modifications possible

HMF DIMENSIONS, unit material thickness 0.75/1.0 mm

L B H F A ØD1 male/female ØD2 male
HMF-100 600 500 200 88 40 199/201 99
HMF-125 600 500 240 120 40 249/251 124
HMF-160 600 500 240 120 40 249/251 159

Note: male connection: outer dimension, female connection: inner dimensions. Note: Standard dimensions, modifications possible

Material and Finishing

PART MATERIAL NOTE
Casing Hot galvanized steel Available as an option: stainless steel EN 1.4404 (AISI316L)
Casing thickness 0,5 mm As an option: 0,75/1,0 mm
Spigots Hot galvanized steel and EPDM rubber Available as an option: stainless steel EN 1.4404 (AISI316L)
Insulation Mineral wool, s=20 mm, MED approved As an option: s=25 mm
I/O unit Aluminium / plastic / electronics
Reheat coil Stainless steel EN 1.4301 (AISI304)
Cables Halogen free
Airflow measurement probes and tubes Aluminium / polyurethane

Product Models and Accessories

HMF product options

  • Pressure independent model (VAV/CAV)
  • Pressure dependent model (VAV)
  • Inputs for external switches such as balcony door and key card switches available as an option
  • Network compatible with adapter for advanced energy efficiency and supervision system available as an option
  • Energy efficiency functions to reduce unnecessary cooling / heating costs available as an option

Control panel features

Halton Marine HMF cabin units are available with three different control panel models; with rotating knob, push buttons with LED bar graph (available as option: IP54) and push buttons with LCD-display (available as option: IP54).

Common features

  • Cabin temperature measurement
  • Connector for bluetooth / communication adapter to set cabin parameters
  • Software for parameter setting and trouble shooting
  • Different colour options and custom labeling available as an option
  • Delivered with IC-Cable (interconnection cable)
    • For control panel – cabin unit connection
    • Prefabricated with plugs on both ends
    • Cable plug on panel side is designed to be pulled through standard installation pipe
    • Halogen free and flame-retardant
    • Standard length 7 meters. Other lengths available.

Control panel with rotating knob

  • Temperature adjustment by rotating knob

Control panel with push buttons and LED bar graph

  • Temperature adjustment by push buttons
  • Self diognose function
  • LED intensity control and auto dimming

Control panel with push buttons and LCD-display

  • Temperature adjustment by buttons
  • Self diagnose function
  • LCD intensity control and auto dimming
  • Display for actual and set point temperatures available as an option
  • Time display available as an option
  • A customized background picture available as an option
  • Several frame options available


Control panel models; push buttons and rotating knob


LCD control panel

Cabin ventilation configuration table

Please note: HMM and HME units are also available without a control package.

Manually controlled airflows

Single duct units; HMM, HME

Pressure dependent units

Single duct units: HMF, HFR/M

Pressure independent units

Single duct units; HMF, HFR/M, HML
Dual duct units; HMR

Accessories for HMF cabin units

MS-Cable (master-slave cable)

  • For master cabin unit – slave cabin unit/units connection
  • Prefabricated with plugs on both sides
  • Halogen free and flame-retardant
  • Standard length is 7 meters. Other lengths available as an option.

Communication adapter

  • Bluetooth communication to external device
  • For wireless connection to set cabin unit parameters and trouble shooting

Network adapters

  • Network adapter (also available as WiFi) expands a stand-alone unit to network compatible unit (LON or Ethernet network)
  • Enables supervision and advanced energy efficiency functions
  • For more information, see Halton Networks for cabin ventilation -brochure or contact Halton Marine Sales office.

Reheaters available

  • Standard reheaters: 400W, 800W, 400+800W, 1200W, 1500W, 1800W
  • Offshore reheaters: 400W, 800W, 1200W, 1600W (surface temperature below 90ºC on operating airflow)

Practical power level may be software adjusted cabin by cabin. Cable and power supply design has to be done according to maximum available heating power.

Function

Control panel includes also a number of special features such as diagnostics function, room brightness measurement and re-programmability. The power supply and data transfer between cabin unit and control panel is carried out via interconnection cable.Temperature range is software adjustable between 10 and 30°C.

FUNCTION OF VAV UNIT

When passenger demands lower temperature by using control panel unit, the damper opens in order to increase the flow of cold air towards the maximum value. When the required temperature in the cabin is achieved, the damper reference is held until the temperature demand changes. In heating mode, the damper restricts the airflow towards its minimum rate, and if the required temperature in the cabin is not thus achieved, the controller activates the electric reheater inside the unit in a stepless manner.

Regulation diagram, VAV

FUNCTION OF CAV UNIT

Airflow is kept in pre-set level in any condition. When passenger demands for a higher temperature by using control panel, the electric reheater inside the cabin unit will be activated in a stepless manner towards to maximum heating capacity or until desired temperature is achieved. When passenger demands for a lower temperature by using control panel, the electric reheater inside the unit will be deactivated in a stepless manner towards to zero heating capacity or until desired temperature is achieved.

Regulation diagram, CAV

Operating range for HMF

HMF-100 HMF-125
120 m3/h – 350 m3/h 150 m3/h – 500 m3/h

Cabin unit’s airflow measurement accuracy

AIRFLOW (m3/h)
120-150 151-200 201-300 301-400 401-500
Accuracy* ±20% ±15% ±10% ±8% ±6%

*) ductowork pressure 200-1000 Pa (optimal)

Note: When comparing aiflow measurements between cabin unit and other device, cabin unit’s airflow regulation dead-band has to be taken into account (± 10 m3/h).

Installation

Cabin unit mounting instruction

Projects requirements and possibilities should be taken into account when designing the installation. For more information on the possibilities contact Halton Marine sales office.

Main principles in cabin unit installation:
1.  Fix cabin unit above false ceiling using thread bar (as seen on picture) or frame installation
2.  Connect power supply and IC cable to the unit. (cable installation should be done before this phase, see Interconnection Cable Mounting Instructions). As standard cabin unit has Ensto NAC 31 plug for the power supply (counterpart NAC 32 not include).
3.  Connect supply air ducts to cabin unit inlets.
4.  Close maintenance / installation hatch.
5.  Connect and assemble diffuser to the cabin unit outlet.

Control Panel mounting instruction

1.  Install LRC-1 CP unit back plate to the provided leveled place on the wall.
2.  Fasten 3 screws (DIN 7981 or similar, max. head height 3mm) to fix CP unit to its place.
3.  Connect LRC-1 interconnection cable to the interconnection connector. Max. allowed tractive force is 30 N.
4.  Install LRC-1 CP unit front plate to the back plate
5.  Fasten the screw in the bottom carefully. Max. Torque 0,3 Nm.

The LRC-1 CP unit should be positioned on the wall inside the room it will regulate. It is advised to avoid direct sunlight or position near heating/cooling source object.

Interconnection Cable mounting instructions

Interconnection cable comes prefabricated with plugs on both sides. To install, draw it through the provided tube from cabin unit to CP unit (the plug on CP unit is small enough to allow drawing through tubes). Max. allowed tractive force is 30N. On the CP side, in the room, leave approximately 8 cm of the cable (the wires) outside the tube. The near end of the tube (CP-unit side) must be blocked (e.g. foam) to prevent condensation and thermal transfers reaching CP unit.

Safety distances

A required safety distance as illustrated must be taken into account when installing the cabin unit. Airflow measurement accuracy cannot be guaranteed if safety distance is not taken into account.

Commissioning

All parameters can be preset at the factory according to order. During commissioning all parameters can be modified wirelessly with portable device using LRC manager software.

Halton also provides supervision and commissioning services for the projects.

For more information contact Halton Marine Sales office.

Weights

Casing thickness HMF-100  HMF-125
0,5 mm 11 11,5
0,75/1,0 mm 17 18

Product Code

(C)=Diameter of inlet connection
100
125

(E)=Diameter of outlet connection
160
200
250

(C2)=Outlet connection type
(A) Male with gasket
(B) Male without gasket
(C) Female

(CP)=Location of Power Supply Connection
(F) Front end
(B) Back end
(S) Side

(CU)=Control Unit
(B1) B00 (pressure independent, automatic)
(M0) M00 (pressure independent, automatic)
(I1) I00 (pressure dependent, semiautomatic)

(RH)=Reheat Coil
(NA) No reheater
(S1) Single coil 400 W
(S2) Single coil 800 W
(S3) Single coil 1200 W
(S4) Single coil 1500 W
(S5) Single coil 1800 W
(D1) Double coil 400 W + 800 W

Code example
HMF-125-160,C2=A,CP=B,CU=B1,RH=S1,ZT=Y

Sound Attenuation

Sound attenuation (dB)

f(Hz) 63 125 250 500 1000 2000 4000 8000
HMF-100 ∆L(dB) 6,4 11,3 15,9 25,8 34,8 37,9 35,3 34,7
HMF-125 ∆L(dB) 4,9 9,6 16,2 24,9 33,4 36,8 35,4 35,6

∆L: Sound attenuation not including end reflection

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