LAB1283R, Issue 2, Apr 2017
Page 22
Press “
SET
” to record or “
ESC
” to discard the settings and return to the home screen
5.10 Setting the automatic heat exchanger bypass operating temperature (for activation see
5.4)
From the home screen, press “
TEMP
” as required to move to menu ‘T3’
T3 is the target indoor temperature setting at which the heat exchanger bypass
mechanism operates to allow the extract air to bypass the heat exchanger and is
adjustable b15°C and +25°C (Factory default 20°C)
Use the “
+
” or “
-
“ buttons to set the operating temperature in steps of 1°C
Press “
SET
” to record or “
ESC
” to discard the settings and return to the home screen
5.11 Setting the optional duct-heater operating temperature (°C)
From the home screen, press “
TEMP
” as required to move to menu ‘T4’
T4 is the outdoor temperature setting at which an
optional
intake air duct-heater switch
can be activated and is adjustable b5°C and +12°C (Factory default 10°C)
Use the “
+
” or “
-
“ buttons to set the activation temperature in steps of 1°C
Press “
SET
” to record or “
ESC
” to discard the settings and return to the home screen
LAB1283R, Issue 2, Apr 2017
Page 11
2.3 Fitting the Domus 297 dry-trap and condensate drain kit
2.3.1 Using a small amount of solvent weld suitable for ABS pipe fittings (not supplied), attach
the threaded socket to the pre-drilled condensate outlet spigot.
Important:
follow the
health and safety and user instructions supplied with the solvent weld. This is particularly
important when working in confined spaces
2.3.2 When the threaded socket is secure, fit and hand-tighten the threaded elbow or
alternatively the threaded straight adapter, making sure that the rubber seal washer is
seated correctly. Gently push the waterless trap onto the elbow stem.
Important:
check
that the arrows printed on the trap point away from the HRX2D appliance (in the direction
of flow) and prior to fitting, ensure that the waterless trap operates correctly by running a
trickle of water from a tap through the trap in the direction of the arrows
2.3.3 Using the remainder of the kit items complete the condensate drain-system to suit the
dwelling layout.
Important:
the drain must incorporate a continuous fall of at least 0.5º
(9mm in every 1000mm) to the nearest waste water network
2.3.4 The condensate drain system should be adequately supported and suitably insulated if it
passes through unheated spaces and voids (e.g. loft spaces) to prevent freezing
2.4 Ducting guidelines
2.4.1 Please refer to the design drawings for the proposed ducting layout
2.4.2 Four 204x60mm sockets are provided for connecting the ducting. Ductwork should be
securely connected to the sockets using
Domus DDSEAL
acrylic sealant; failure to do
this will cause unnecessary air leakage and impair performance. Ducting must be
connected to all four sockets in accordance with the configuration shown on page 7
(see
2.2.6)
V E N T I L A T I O N
V E N T I L A T I O N
