Room Temperature Sensor; Truma Pressure Relief/Drain Valve; Opening The Truma Pressure Relief/Drain Valve; Closing The Truma Pressure Relief/Drain Valve - Truma Combi eco Operating Instructions Manual

Room temperature sensor

A room temperature sensor (Fig. 1 – C) mea-
sures the temperature inside the RV.
The installation location for the room tempera-
ture sensor depends on the RV and will be cho-
sen by the RV manufacturer.

Truma pressure relief/drain valve

Risk of scalding injury from hot water
and/or tampering with the pressure relief/
drain valve!
• Never actuate the pressure relief/drain valve
as long as the Combi furnace is still hot.
• Do not place a plug or reducing coupling
on the outlet part of the valve. If you use a
discharge line, allow the valve and the line
to drain completely.
– The Truma pressure relief/drain valve pro-
vides both the pressure relief function and
a drain function.
– The pressure relief/drain valve is a safety
component and must not be removed for
any reason other than replacement.
– The pressure relief/drain valve is not ser-
viceable; if defective, it must be replaced.
It must be replaced by a certified service
technician.
– It must be replaced by a pressure relief/
drain valve rated for
65.25 psi (4.5 bar) CSA-certified and
registered.
– Tampering with the pressure relief/drain
valve will void the warranty.
The Combi furnace with supplementary indirect
water heating must be installed with a pressure
relief valve (Fig. 5) that complies with the stan-
dard for Relief Valves for Hot Water Systems,
ANSI Z21.22.
10
Fig. 5
1 Truma pressure relief/drain valve
2 Lever
3 Drainage socket (extends through RV's
undercarriage to outside)
Opening the Truma pressure relief/
drain valve
Danger of damage to the Combi and
the RV due to an obstructed drainage socket!
The drainage socket (Fig. 5 – 3) must be unob-
structed and kept clear of obstructions such as
slush, ice, or leaves to ensure that water can
drain properly. No warranty claims for frost dam-
age will be accepted.
• Move the lever so that it is in the "draining"
position (Fig. 6 – c). Water will drain from the
hot water container via the drainage sock-
et (Fig. 5 – 3).
Fig. 6
a,b = lever in "valve closed during furnace
operation" position
c = lever in "draining" position
Closing the Truma pressure relief/
drain valve
• Move the lever so that it is in the "closed"
position (Fig. 6 – a or 6 – b)
1
2
3
b
c
a