Nortek PREEVA NEOS, Installation And Servicing Manual

Page No 18 of 52 Reznor, PREEVA Neos, Installation Manual,  EN 2021-05, D301315 Iss 1

I

Condensate drain

All PREEVA Neos units are designed 
with a built-in drain connection 
complete with a U trap. This will 
need to be filled with water (via 
the flue outlet opening) during 
commissioning.

Follow local regulations for the 
correct disposal of condensate.

A PVC condensate discharge pipe should be 
run by the installer to connect the drain from 
the unit to the nearest foul drainage point. 
Condensate water does not belong in a rain-
water tank!

A condensate disposal system that relies 
on gravity should be satisfactory for most 
installations. If a gravity system is not possible, a 
condensate pump must be installed. There are a 
number of commercially available pumps made 
for this purpose. 

If using a condensate pump, follow the pump 
manufacturer’s installation recommendations.

Condensate drain pipe connections must be 
glued, to prevent condensation water dripping 
from the drain pipe.

The condensate water coming from the unit 
heater has a pH-level of approx 4.6 and can 
affect materials made from zinc and/or copper, 
hence it is strongly advised against letting the 
condensation water flow off through the gutter.

To ensure the condensation water does not 
freeze, it is recommended to mount the drain 
pipe inside the building. If there is no other 
choice but mounting it outside, it is strongly 
recommended to equip it with frost proof 
insulation. For external units it may be necessary 
to fit trace heating to the condensation pipe to 
prevent freezing.

Model

PRN-I

025

035

045

055

070

100

PRN-E

Condensate

l/hr

0.65

0.75

0.88

1.00

1.25

1.75

Table 3 Condensate drainage flows

Gas connection

A competent and/or qualified engineer is 
required to either install a new gas meter to the 
service pipe or to check that the existing meter 
is adequate to deal with the rate of gas supply 
required. Installation pipes should be fitted in 
accordance with national standards so that the 
supply pressure, as stated in the technical data 
section will be achieved.

It is the responsibility of the competent engineer 
to ensure that other relevant standards and 
codes of practice are complied with in the 
country of installation. Pipes of smaller size 
than the heater inlet gas connection must not 
be used. The complete installation must be 
tested for soundness as described in the country 
of installation. Support gas piping with pipe 
hangers, metal strapping, or other suitable 
material. 

Do not rely on the unit to support 
the gas pipework installation.

Before installation, check that 
the local distribution conditions, 
nature of gas and pressure, and 
adjustment of the appliance are 
compatible.

This appliance is designed for a 
maximum gas supply pressure of 
50mbar. When pressure testing the 
supply piping with test pressures 
above 50mbar, disconnect the 
heater and manual valve from the 
gas supply line that is to be tested. 
Cap or plug the supply line.

All sealing products must be resistant to the 
action of liquefied petroleum gas or any other 
chemical constituents of the gas being supplied.