Service manual

U I A
6 AWR MTD - AWR MTD/B GB 01/2009
DIMENSIONAL DRAWINGS
I
600
W1
W2
W4
W3
900
D
B
C
=E
A
=
400
Dimensions 0011 0025 0031 0041 0051 0061
A mm 900 900 900 900 900 900
B mm 940 1240 1240 1240 1400 1400
C mm 370 420 420 420 420 420
D mm 320 370 370 370 370 370
E mm 580 580 580 580 580 580
Weight distribution AWR 0011 0025 0031 0041 0051 0061
W1 lato rear dx kg 47 62 64 65 68 71
W2 lato rear sx kg 23 18 20 22 24 24
W3 front sx kg 13 18 18 21 22 22
W4 front dx kg 42 52 53 57 61 63
tot kg 125 150 155 165 175 180
1 - Water connections IN 0011÷0025 Ø1” - 0031÷0061 Ø1”1/4
1 - Water connections OUT 0011 Ø3/4” - 0025÷0061 Ø1”1/4
INSTALLATION
I
CHOICE OF INSTALLATION SITE
Before installing the unit, agree with the customer the site
where it will be installed, taking the following points into con-
sideration:
- Check that the fixing points are adequate to support the
weight of the unit;
- Pay scrupulous respect to safety distances between the
unit and other equipment or structures to ensure that air
entering the unit and discharged by the fans is free to cir-
culate.
- Follow the instructions shown in the chapter on DIMEN-
SIONAL DRAWINGS to allow room for maintenance oper-
ations. If installing multiple units the clearances must be
doubled.
POSITIONING
Before handling the unit, check the capacity of the lift equip-
ment used, respecting the instructions on the packaging.
To move the unit horizontally, make appropriate use of a lift
truck or similar, bearing in mind the weight distribution of the
unit.
To lift the unit, insert tubes long enough to allow positioning
of the lifting slings and safety pins in the special holes in the
base of the unit.
To avoid the slings damaging the unit, place protection
between the slings and the unit.
The unit should be installed on special vibration dampers.
See the chapter on DIMENSIONAL DRAWINGS for the sup-
port positions identified by W1, W2 etc. and the correspond-
ing weights for the correct sizing of the vibration dampers.
Fix the unit, making sure it is level and that there is easy
access to water and electrical components.
If the site is exposed to strong winds, fix the unit adequately
using tie rods if necessary.
In heating mode the unit produces a significant quantity of
condensate, which must be suitably drained.
Condensate drainage must not cause problems to objects or
people.
If the outside air temperature is less than 0°C, the conden-
sate may freeze; in these case fit a frost protection heater
on the drain line.
For correct operation of the unit, avoid the following: obsta-
cles to air flow, leaves that may block the heat exchange
coil, strong winds that stop or reinforce air flow, sources of
heat too close to the unit, recirculation or stratification of air.