AbsolutAire DFM44E Installation Manual

DFM44E Series

Installation Instructions

System Requirements: Win 95b/98/Me/2000/XP Resolution: 1024 x 768 32MB RAM

23555 Telegraph Rd.

Southfield, MI 48034

248.356.1400

Read Before Installation

DFME DFME

DFME

DFME DFME

Proper DFME operation can only be achieved by completing a full setup routine before operation.

Before installing Temperature Controller and Software, read the entire installation instruction manual to ensure proper and successful operation.

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DFME Product Description

Temperature Controller for use with Recirculating Direct Gas-Fired Modulating Air Heaters in accordance with applicable specifications of ANSI Z83.18.

DFM44E System Requirements

ADFM44E Amplifier (Ambient Operating Temperatures: -40°F (-40°C) to 158°F (70°C))

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TDFM44 Selector (40°F - 95°F)

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TS394-2B-4 Return Air Sensor

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TS394-2B-4 Outdoor Air Sensor

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TS194Q Discharge Air Sensor

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MT Series Mixing Tube

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M/MR212 Series Modulating Gas Valve

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Software CD-ROM

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Signal from Airflow Measuring Device or Outside Air Damper (not supplied)

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Laptop or PC with Windows 95b/98/Me/2000/XP (32 MB RAM minimum) (not supplied)

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Patch Cable w/ RJ45 connectors (both ends) (not supplied)

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Serial Cable (DB9M to DB9F) (not supplied)

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Separate 24 VAC 40 VA Power Supply (not supplied)

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Accessories

Airflow Measuring Device (available)

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Note: Auto-Calibrate feature requires Airflow Measuring Device with 0-10 VDC output.

Features

Low Fire Start Timer (standard on all versions)

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Unoccupied Mode (standard on all versions)

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1-24 VDC N.O. Relay (1 W max) required (not supplied)

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Mild Weather Thermostat (version 2.2)

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1-24 VDC N.O. Relay (1 W max) required (not supplied)

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Freeze Thermostat (version 2.3)

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1-24 VDC N.O. Relay (1 W max) required (not supplied)

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Mild Weather and Freeze Thermostat (version 2.4)

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2-24 VDC N.O. Relays (1 W max) required (not supplied)

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TSDFM44 Remote Room Sensor (optional on all versions)

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Form Instr 44E2.4

@ 2003, Maxitrol Company, 23555 Telegraph Rd., Southfield, MI 48034 www.maxitrol.com, 248.356.1400

Step1: Hardware Installation Instructions

After each component has been located and mounted, set dipswitches and make wire connections according to Diagrams 1 and 2.

Items Needed

3/16” Drill Bit

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Mounting Template (included)

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ADFM44E Connections

Diagram 1

Separate Power Supply

24 VAC 40 VA

(See Note 1)

M/MR212 Modulating Gas Valve

On Board 24 VDC Relay Power Output

(See Note 4)

Serial Cable Connection

to PC/Laptop

(12 ft maximum)

Patch Cable w/ RJ45 connection (both ends) to

TDFM44 Selectrastat

(See Diagram 2 for maximum lengths.)

ADFM44E

SW1

SW1 #4

OFF

SW2

Low Fire Start Timer

Timing

Timing begins when 24 VAC is present at J1.

Timing begins when 24 VAC is present at J7 and J1.

J5/J6

Note 1:

Maxitrol ADFM44E amplifiers have full wave rectifiers (diodes). DO NOT connect any other external devices requiring 24 VAC to the same

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transformer powering the ADFM44E amplifier (J1) doing so will destroy the ADFM44E amplifier and void the warranty.

24 VAC supply power (J1) with customer supplied relay (1 W max) may be used as input (J7) to begin Low Fire Start Timer.

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Form Instr 44E2.4

@ 2003, Maxitrol Company, 23555 Telegraph Rd., Southfield, MI 48034 www.maxitrol.com, 248.356.1400

Note Polarity

0-10 VDC Airflow Measuring Device

(used for Auto-Calibrate only)

Temperature Sensors

View A

Damper Position Feedback or Continuous Airflow Measuring Device

24 VAC Input to Low Fire Start Timer

(see Note 1 and SW1)

Note Polarity

External Matching

Resistor

(see Note 3)

Note 2:

This connection is for direct

attachment of TSDFM44 to

ADFM44E board only. See

diagram 2, C.

When properly connected, the resistance or voltage measured across the feedback connection (J5) should increase as the outside air damper opens. Similarly, the resistance or voltage should decrease as the outside air damper closes.

Switch SW2 is set as in chart for the Damper or Continuous

Airflow Measuring Device

feedback being used.

Feedback

0 to 5V

0 to 10V

4 to 20 mA

135 ohm POT

500 ohm POT

10 K ohm POT

POT with EXT R

Relay Drive

SW2

#5, #6 ON

#5 ON

#4, #5 ON

#1 ON

#2 ON

#3 ON

ALL OFF

Freeze Thermostat

Mild Weather Lockout

Unoccupied Mode

Note 4:

Max. Coil Power = 1 W.

The corresponding relay

drive (J8) is at ground (24

VDC) when Mild Weather

Lockout, Freeze Thermostat

or Unoccupied Mode are

inactive.

Note 3:

If a damper feedback POT not having a value of 135, 500 or 10 K is used, an External Resistor equal to the POT value must be

connected to the AMPLIFIER (J6). Diagram 1, View A. ALL of SW2 should be OFF.

Form Instr 44E2.4

@ 2003, Maxitrol Company, 23555 Telegraph Rd., Southfield, MI 48034 www.maxitrol.com, 248.356.1400

Room Sensing Options

Diagram 2

Integral to TDFM44 Selectrastat

A. Temperature sensed by TDFM44 sensor:

Leave terminals #1 and #2 connected to sensing element. Place SW1 #1 ON.

Terminal Connections 3, 4, 5 (see Note 5, page 6)

ADFM44E

(TDFM44 to ADFM44E connection: 120 ft maximum)

Form Instr 44E2.4

@ 2003, Maxitrol Company, 23555 Telegraph Rd., Southfield, MI 48034 www.maxitrol.com, 248.356.1400

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