Carrier WeatherMaker 50FC handleiding
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Economizers are shipped standard with an HH79NZ039 outside
air dry bulb sensor (refer to Fig. 78). System default setting (high
temp limit) is 63°F (17°C) and has a range of 48°F to 80°F (9°C to
27°C). Sensor is factory installed on economizer.
NOTE: A second HH79NZ039 sensor is provided for mixed air
temperature.
NOTE: California high temperature setting requirements by
region are shown in Table 23.
Enthalpy Settings (Enthalpy OPTION)
If installing the optional HH57LW001 enthalpy sensor, the
HH79NZ039 dry bulb outside air sensor must first be removed.
Wire sensor to harness 48TC005213 and the (5) wires from the
harness to the EconomizerONE harness in the return air chamber.
Harness 48TC005213 has a 5-pin plug that connects directly to the
HH57LW001 enthalpy sensor. Refer to the base unit control wir-
ing diagrams earlier in this book for wiring connections. Refer to
Fig. 77 and see Table 24.
California’s Title 24 High Temperature
Limit Settings
California’s Title 24 code requires a high temperature limit set-
ting for all dry bulb outside air economizer changeover. The
temperatures vary by the region within California. See
Table 23 for high limit settings.
Table 23 — California Title 24 Regional High Limit
Dry Bulb Temperature Settings
a
DEVICE TYPE
b
CLIMATE
ZONES
REQUIRED HIGH LIMIT
DESCRIPTION
(ECONOMIZER OFF WHEN)
FIXED DRY
BULB
1, 3, 5, 11-16 OAT exceeds 75°F (23.8°C)
2, 4, 10 OAT exceeds 73°F (22.7°C)
6, 8, 9 OAT exceeds 71°F (21.6°C)
7 OAT exceeds 69°F (20.5°C)
DIFFERENTIAL
DRY BULB
1, 3, 5, 11-16
OAT exceeds
RA temperature
2, 4, 10
OAT exceeds return air temperature
–2°F (–18.8°C)
6, 8, 9
OAT exceeds return air temperature
–4°F (–20°C)
7
OAT exceeds return air temperature
–6°F (–21.1°C)
FIXED
ENTHALPY
c
+ FIXED DRY
BULB
All
OAT exceeds 28 Btu/lb of dry air
b
or
OAT exceeds 75°F (23.8°C)
NOTE(S):
a. This table is sourced from 2019 California Energy Code, Title 24, Part 6,
Table 140.4-E Air Economizer High Limit Shut Off Control Requirements.
b. Only the high limit control devices listed are allowed to be used and at the set
points listed. Others, such as Dew Point, Fixed Enthalpy, Electronic Enthalpy,
and Differential Enthalpy Controls, may not be used in any climate zone for
compliance with Section 140.4(e)1 unless approval for use is provided by the
Energy Commission Executive Director.
c. At altitudes substantially different than sea level, the Fixed Enthalpy limit value
shall be set to the enthalpy value at 75°F and 50% relative humidity. As an ex-
ample, at an approximately 6,000 foot elevation, the fixed enthalpy limit is ap-
proximately 30.7 Btu/lb.
LEGEND
OAT — Outdoor-Air Thermostat
RA — Return Air
Table 24 — HH57LW001 Sensor Wiring Terminations
TERMINAL
TYPE DESCRIPTION
NUMBER LABEL
1 TCOM NTC 10k Outside Air Temperature Sensor Output
2 TSIG NTC 10k Outside Air Temperature Sensor Output
3 HSIG 0-10 vdc Outside Air Relative Humidity Sensor Output
4 HCOM COMMON Sensor 24-v Common Input
5 H24V 24 vac Sensor 24-v Operating Voltage Input
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Productinformatie
| Merk | Carrier |
| Model | WeatherMaker 50FC |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 8511 MB |
