Trane Axiom GEH-E035, Инструкция по установке, эксплуатации и обслуживанию

Страница: 65 / 124

WSHP-SVX01Y-EN 65
Waterside Economizer Start-Up Sequence
1. Set the thermostat to the highest position.
2. Set the thermostat system switch to COOL with the
fan control to AUTO. The compressor should NOT
run.
3. Reduce the thermostat setting until the compressor,
reversing valve, solenoid valve, and loop pump are
energized. Adjust water flow utilizing pressure/
temperature plugs and comparing to tables
contained in specification sheet data. Water leaving
the heat exchanger should be warmer than the
entering water temperature (approximately 9-12ºF);
blower operation should be smooth; compressor
and blower amps should be within data plate
ratings; the suction line should be cool with no frost
observed in the refrigerant circuit.
4. Check the cooling refrigerant pressures against
values in “Operating Pressures,” p. 91 .
N No otte e:: If cooling mode is activated, and the entering
water temperature of the heat pump falls below
55ºF, the 2-position, water side economizing
valve will become energized (open) and
compressor operation will halt allowing for free
cooling in the space.
5. Turn the thermostat system switch to the OFF
position. Unit should stop running and the
reversing valve should de-energize.
6. Leave unit off for approximately FIVE minutes to
allow for pressure equalization.
7. Turn the thermostat to the lowest setting.
8. Set the thermostat system switch to the HEAT
position.
9. Adjust the temperature setting upward until the unit
is energized. Warm air should blow from the
register. A water temperature decrease of
approximately 5-9°F leaving the heat exchanger
should be noted. The blower and compressor
operation should be smooth with no frost observed
in the refrigeration circuit.
10. Check the heating refrigerant pressures against
values in “Operating Pressures,” p. 91 .
N No otte e:: For units with boilerless electric heat option: In
heating mode, if the entering water temperature
of the heat pump falls below 45ºF, the electric
heater will be energized, and compressor
operation will halt. Once the entering water
temperature rises above 50ºF, the boilerless
controls returns the unit.
11. Set the thermostat to maintain the desired space
temperature.
12. Instruct the owner on system operation.
Table 47. Waterside economizing three-way valve specifications (GEH/V units)
Unit Size (60
Hz)
Unit Size (50
Hz)
Valve Conn.
Size
Valve Pres.
Rating
Valve Close-
off pressure
Valve Temp.
Range
Actuator
GEHE 006-015
GEVG 006-012 GEHE 006-012 1/2 FPT 600 psi 200 psi 0°F to 250°F -18°
C to 121°C Non-spring
return type 24
Vac +/- 20% 135
second stroke
time 10 Cv at full
port
GEHE 018-042
GEVG 015-042 GEHE 015-036 3/4 FPT 600 psi 200 psi 0°F to 250°F -18°
C to 121°C Non-spring
return type 24
Vac +/- 20% 135
second stroke
time 24 Cv at full
port
GEHE 048-060
GEVG0 48-060 GEHE 042-060 1 FPT 600 psi 200 psi 0°F to 250°F -18°
C to 121°C Non-spring
return type 24
Vac +/- 20% 135
second stroke
time 30 Cv at full
port
GEVE/GEHE 6-
7.5 Ton GEVE 6 Ton 1-1/4 FPT 600 psi 200 psi 0°F to 250°F -18°
C to 121°C Non-spring
return type 24
Vac +/- 20% 135
second stroke
time 33 Cv at full
port