York ZF036, Installation Manual

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826081-XIM-C-0214
Johnson Controls Unitary Products 29
0.47 0.57 0.66 0.75 0.85 0.94 1.03 1.13 1.23 1.32 1.42
17.4 19.8 22.3 27.3 32.2 37.2 42.2 49.6 57.0 64.5 74.4
7-15KW 10.0 12.4 14.9 17.4 19.8 24.8 29.8 34.7 39.7 47.1 54.6
20-30KW 14.9 17.4 19.8 22.3 27.3 32.2 37.2 42.2 49.6 57.0 64.5
14.9 17.4 19.8 22.3 24.8 27.3 29.8 34.7 39.7 47.1 54.6
19.8 25.0 29.8 34.7 39.7 44.6 49.6 57.0 64.5 71.9 79.4
1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
0.07 0.08 0.09 0.11 0.13 0.15 0.17 0.20 0.23 0.26 0.30
7-15KW 0.04 0.05 0.06 0.07 0.08 0.10 0.12 0.14 0.16 0.19 0.22
20-30KW 0.06 0.07 0.08 0.09 0.11 0.13 0.15 0.17 0.20 0.23 0.26
0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.14 0.16 0.19 0.22
0.08 0.10 0.12 0.14 0.16 0.18 0.20 0.23 0.26 0.29 0.32
BOTTOM DUCT CONNECTIONS
1
ELECTRIC
HEATERS
1
RESISTANCE, Pa
M
3
/S
DESCRIPTION
ECONOMIZER
1, 3
RESISTANCE, IWG
CFM
ECONOMIZER
1, 3
COOLING ONLY
2
ELECTRIC
HEATERS
1
BOTTOM DUCT CONNECTIONS
1
COOLING ONLY
2
DESCRIPTION
1. Deduct these resistance values from the available external static pressure shown in SUPPLY AIR BLOWER PERFORMANCE Tables.
3. The pressure through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air
duct system is less than 62.0 Pa [0.25 IWG], the unit will deliver less M
3
/S or CFM during full economizer operation.
2. Add these resistance values to the available static resistance values on SUPPLY AIR BLOWER PERFORMANCE Tables.
Phasing
YORK MODEL ZF units are properly phased at the factory.
Check for proper compressor rotation. If the blower or
compressors rotate in the wrong direction at start-up, the
electrical connection to the unit is misphased. Change the
incoming line connection phasing to obtain proper rotation.
(Scroll compressors operate in only one direction. If the scroll is
drawing low amperage, has similar suction and discharge
pressures, or producing a high noise level, the scroll is
misphased).
Table 17: Belt Drive Motor And Drive Data
Table 18: Static Resistances
mm inch mm inch mm inch mm inch mm inch
5 TON 812-1102 1.5 1450 56 1.0 IVL44 69-97 2.8-3.8 22 7/8 127 5.0 25 1 922 36.3 A35
6 TON 948-1227 1.5 1450 56 1.0 IVM50 86-112 3.4-4.4 22 7/8 132 5.2 25 1 947 37.3 A36
DESIG-
NATION
BELT FIXED BLOWER PULLY
BORE PITCH DIA. BORE
PITCH
LENGTH
MODEL
BLOWER
RANGE
(RPM)
MOTOR
1
ADJUSTABLE MOTOR PULLY
HP RPM
FRAME
SIZE
SERVICE
FACTOR
DESIG-
NATION
PITCH DIA.
1. All motors have solid bases and are inherently protected. These motors can be selected to operate into their service factor because
they are located in the moving air, upstream of any heating device.
Scroll compressors require proper rotation to operate
correctly. Units are properly phased at the factory. Do
not change the internal wiring to make the blower,
condenser fans, or compressor rotate correctly.