Carrier 50JZ - Page 17

17
LEGEND
Ewb – Entering Wet-Bulb
kW – Total Unit Power Input
SHC – Sensible Heat Capacity (1000 Btuh)
TC – Total Capacity (1000 Btuh) (net)
NOTES:
1. Ratings are net; they account for the effects of the evaporator-fan motor power and heat.
2. Direct interpolation is permissible. Do not extrapolate.
3. The following formulas may be used:
sensible capacity (Btuh)
t=tⴚ
ldb edb
1.10 x cfm
t = Wet-bulb temperature corresponding to enthalpy of air leaving
lwb
evaporator coil (h )
lwb
total capacity (Btuh)
h=hⴚ
lwb ewb
4.5 x cfm
Where: h = Enthalpy of air entering evaporator coil
ewb
Performance data (cont)
ECONOMIZER 1-in. FILTER PRESSURE DROP (in. wg)
MULTIPLICATION FACTORS
Example: 15.0 kw (at 240v) heater on 208v
= 15.0 (.75 mult factor)
= 11.25 capacity at 208v
UNIT50JZ PRESSURE DROP
024-036 0.20
042-060 0.25
HEATER kw
RATING
VOLTAGE
DISTRIBUTION V/3/60
MULTIPLICATION
FACTOR
240
200
208
230
240
.69
.75
.92
1.00
480
440
460
480
.84
.92
1.00
LEGEND
BF — Bypass Factor
Ewb — Entering Wet-Bulb
kW — Total Unit Power Input
SHC — Sensible Heat Capacity (1000 Btuh)
TC — Total Capacity (1000 Btuh) (net)
PSC — Permanent Split Capacitor
Edb — Entering Dry-Bulb
rh — Relative Humidity
— Indicates Integrated Ratings
4. The SHC is based on 80°F edb temperature of air entering evaporator
coil. Below 80°F edb, subtract (corr factor x cfm) from SHC.
Above 80°F edb, add (corr factor x cfm) to SHC.
Correction Factor = 1.10 x (1 + BF) x (edb + 80).
5. Integrated capacity is maximum (instantaneous) capacity less the effect
of frost on the outdoor coil and the heat required to defrost it.
NOTES:
1. Ratings are net; they account for the effects
of the evaporator-fan motor power and heat.
2. Direct interpolation is permissible. Do not extrapolate.
3. The following formulas may be used:
ELECTRIC HEAT PRESSURE DROP TABLES
Small Cabinet: 024-036
*Not for use with 50JZ024
Large Cabinet: 042-060
STATIC
CFM
500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600
5 Kw 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.06 0.07
7.5 Kw 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.03 0.05 0.07 0.08 0.09
10 Kw 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.06 0.07 0.09 0.10 0.11
15 Kw* 0.00 0.00 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18
STATIC
CFM
1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500
5 Kw 0.00 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12
7.5 Kw 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13
10 Kw 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13
15 Kw 0.00 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15
20 Kw 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16