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SD092750 ISSUE 34
Installation
1. Siting
2. Ducting
See Figs. 2, 3, 4, and 5.
a) Ensure heat pump on site is as ordered,
i.e. model electrical supply and factory
fitted options.
b) Inspect unit for damage, in paticular inspect
the evaporator (finned side) to ensure that it is
undamaged (minor indentations in the fins do
not affect performance). If severely damaged
endorse delivery note in presence of the driver
and send a recorded delivery letter to the
transport company giving details.
c) Protect the unit if installation is delayed.
d) Provide a firm level base capable of supporting
operational weight of unit. Spread load if on timber
floor.
e) Ensure water cannot collect under the unit. It
is recommended that units are installed on
plinths 100mm above finished floor level and
also to aid condensate drainage.
f) Allow adequate clearance to service panels on
unit; recommend 500mm minimum (see
installation drawings).
g) All Calorex heat pumps are designed to be as
quiet as practicable, however, due
consideration should be given to siting in order
to fully exploit this feature, i.e. orientate inlet/
outlet parallel to occupied premises.
h) Ensure loose debris will not block air filters or
grilles.
IMPORTANT
As Variheat units are handling air at Pool Hall
temperatures, they must be sited in a warm
environment, i.e. pool hall, or insulated plenum. They
must not
be sited in
cold areas
, i.e subject to
ambient air.
The quantity of air flow handled by each Variheat
unit is given on the data sheet together with
the maximum pressure available from
the fan to overcome total ducting resistance to air
flow, i.e. inlet, discharge ducting, grilles, and where
installed, air heater batteries.
It is recommended that a reputable duct work
company is associated with the duct design/
manufacture and selection of grilles for the total
system.
Note:
1.
The humidity sensing tube situated by the air inlet
is to be encompassed by or extended to any inlet air
ducting. Refer to installation drawings.
2.
All units have discharge ducting spigots as
standard.
3.
Inlet ducting spigots are available from stockists.
4.
Final connections to Variheat spigots must be
made of flexible ducting (rubber or canvas) to
eliminate transmission of vibration down the duct.
5.
Before any discharge ducting is attached remove
plate (if fitted) from machine outlet or fan grille.
6.
After completion of installation including all grilles,
ductwork etc., ensure that the air flow through the
machine is as specified in the data sheet ±10%. If
air flow is high, damp outlet to obtain correct airflow.
If airflow is low or high the unit will not function
correctly.
But discharge from each unit must be kept separate and
must not be incorporated into one common duct system,
unless non return dampers are used for each machine.
Minimum Free Air m²
Model
Inlet
AW/AC 550/800VH
0,35
AW/AC 1200VH
0,45
AW/AC 1400/1800VH
0,56
AW/AC 4000VH
1,1
In order that moisture can be removed and
humidity control can be effected within the pool
hall, it is essential that correct air movement and
distribution is achieved.
The Variheat unit must extract the humid air
generated at pool surface and discharge the drier
air to areas which are subject tio condensation
problems (windows etc and, or comfort zones,
spectators, sitting out areas.
This can generally only be achieved by use of
ducting and correct application of grilles/ louvres
to effect air distribution and movement to these
areas.
NOTE: Variheat unit and ducting will be at pool
hall temperature and will require insulation if
exposed to lower air temperatures.
Exhaust from Pool Hall - Humid Air
Should be taken as low as practicable to inlet of
Variheat unit. In many instances siting of Variheat
unit in hall or changing rooms can eliminate use
of duct work to inlet. If duct work is to be fitted, an
inlet duct should be ordered from Calorex
distributer.
Inlet to Pool Hall- Dry Air
Generally achieved by overhead ducting with
suitable grilles to give balance and direction of air
flow. Consideration must be given to duct position
in relation to pool surface, material and finishes
so as not to promote maintenance problems.
Table 1
Required free areas to provide airflow to and from
heat pumps when installed in and enclosed area or
where required to pass air through a wall etc.
Free area is the available area through which air can
pass through a grille or louvres.
Note: If multiple units are installed in an enclosed
area then the inlet free areas required for each unit
can be added together to form one inlet aperture.
