Unblocking The Unit Safely In Case Of Breakdown - York ARC 045 Installation Manual

2. Regulating the GV1 valve with a heat stage oper‐
ating.
– Adjust the main regulator (reading pressure Pa).
– Adjust the gas stage regulation fly wheel -Vmax-. To
do so, loosen the first cylindrical head screw. -T- next
to the symbol -.
– Check the pressure reading in the manifold valve
outlet -Pc-.
– Once adjusted, tighten the screw -T-.
C A U T I O N
Never move the resealed blue screw next to the (+)
symbol.
3. Regulating the GV2 valve with two heat stages op‐
erating.
– Adjust the main regulator and the gas stage follow‐
ing the same procedures as described for valve GV1.
– After fifteen minutes operating with the 2 heat
stages, check the content of CO and CO
Post start up checks
to
Temperature rise regulation
The temperature rise (or difference in temperature between the return air and the hot supply air) should
be within the specified limits.
Once the temperature rise has been determined, the flow may be calculated as follows:
3
m /s =
(*) Based on 90% rated output and on the net heating value of the gas.
Find the temperature rise after 15 minutes operating. So as not to be affected by radiant heat from the
exchanger, the reading for hot air should be taken in the supply duct at a minimum of 2 metres from the
unit connection .
Increase the air flow of the fan to reduce the temperature rise; reduce the air flow of the fan to in‐
crease the temperature rise.

1.17 Unblocking the unit safely in case of breakdown

D A N G E R
• All side panels except for that of the electrical box,
must be fitted, closed and secured with their cor‐
responding locks before turning the general switch
on the unit.
• The unit has a remote control, which means that
the fan turbine may start unexpectedly.
To unlock the unit, see "Restarting the air conditioning
unit in the case of damage" in the User Manual.
Unblocking the unit safely in case of breakdown 1.17
, according
2
, see on page 30 .
Power and application data for gas ARG / ARD
0.9 x kW gas input (*)
1.2072 x °C Temperature rise
Installation manual 1
, see on page 8 .
33