York International ZQ Series, Руководство по установке

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8. If necessary, using a screwdriver, turn the first
stage adjustment screw (adjacent to the “LO”
marking on the valve) clockwise to increase
manifold pressure or counterclockwise to
decrease manifold pressure.
9. Once pressure has been checked, replace the
cover screws covering the HI and LO pressure
adjustment screws.
Table 60: Gas Heat Stages
Model
(Size)
Gas Heat
Descripti on
Opt.
# of Burner
Tubes
1st
Stage
Input
(Mbh)
2nd
Stage
Input
(Mbh)
Total
Input
(Mbh)
Low, NOx L 2 - 56 56
Low D 2 - 70 70
Med, NOx M 3 - 90 90
ZQ04 (3)
Single
Phase
Med E 3 - 112 112
Low, NOx L 2 - 56 56
Low D 2 - 70 70
Med, NOx M 3 - 90 90
ZQ04 (3)
Three
Phase
Med E 3 82 112 112
Low, NOx L 2 - 56 56
Low D 2 - 70 70
Med, NOx M 3 - 90 90
Med E 3 - 112 112
High, NOx N 3 - 116 116
ZQ05 (4)
Single
Phase
High F 3 - 142 142
Low, NOx L 2 - 56 56
Low D 2 - 70 70
Med, NOx M 3 - 90 90
Med E 3 - 112 112
High, NOx N 3 - 118 118
ZQ05 (4)
Three
Phase
High F 3 100 145 145
Low, NOx L 2 - 56 56
Low D 2 - 70 70
Med, NOx M 3 - 90 90
Med E 3 - 112 112
High, NOx N 3 - 116 116
ZQ06 (5)
Single
Phase
High F 3 - 142 142
Low, NOx L 2 - 56 56
Low D 2 - 70 70
Med, NOx M 3 - 90 90
Med E 3 - 112 112
High, NOx N 3 - 118 118
ZQ06 (5)
Three
Phase
High F 3 100 145 145
Adjustment Of Temperature
Rise
The temperature rise (the difference of temperature
between the return air and the heated air from the
furnace) must lie within the range shown on the unit
rating plate and the data in Physical data .
After the temperature rise has been determined, the
CFM can be calculated as follows:
After about 20 minutes of operation, determine
the furnace temperature rise. Take readings of
both the return air and the heated air in the ducts
(about 6 feet from the furnace) where they will not
be affected by radiant heat. Increase the blower
CFM to decrease the temperature rise; decrease the
blower CFM to increase the rise (see Supply Air Drive
Adjustment ).
Note: Each gas heat exchanger size has a
minimum allowable CFM. Below this CFM, the
limit will open.
INSTALLATION MANUAL ZQ SERIES 3 - 5 ton 60 Hertz R-410A 78
Johnson Controls Ducted Systems