HOT Water HEATING1, Physical Data HOT Water Coil 1 ROW

246653-YTG-E-0108

HOT WATER HEATING1

The YORK Millennium Rooftop units (30 - 40 Ton sizes) can be furnished with a YORK hot water coil as the source of heat (Bottom Supply Only). A one or two row coil will be factory installed in the heating section downstream of the supply air fan and just above the supply air opening in the bottom of the unit.

The hot water control valve will not be provided. The installer will need to field supply a water valve. The installer must also connect the hot water piping, and valve wiring at the job site for the hot water heat section to be operational.

For all hot water coils the entering water temperature should not exceed 200°F.

PHYSICAL DATA HOT WATER COIL - 1 ROW

Coil Casing . . . . . . . . . . . . . . . . . . . . Galvanized Steel

Coil Construction. . . . . . . . . . . . . . . . Al Fin / Cu. Tube

Rows Deep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Fin Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . .006”

Tube Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .016”

Tubes / Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Fins Per Inch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Tubes High . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.50”

Tube Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65”

Face Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.16ft.2

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71lbs.

Operating Weight . . . . . . . . . . . . . . . . . . . . . . . .83lbs.

TABLE 9: WATER PRESSURE DROP (1 ROW, 25 & 30 TON)

GPM	10	20	30	40
WATER PRESSURE DROP	0.9	3.0	6.0	10.0

TABLE 10: STATIC RESISTANCE HOT WATER COIL (25 & 30 TON)

CFM	6000	8000	10000	15000
AIR PRESSURE DROP 1 ROW	0.07	0.11	0.16	0.32
AIR PRESSURE DROP 2 ROW	0.14	0.23	0.33	0.65

NOTE: Water pressure drop numbers are based on 60°F entering air temperature, 2.00” maximum air pres- sure drop across the hot water coil(s). ARI certified ratings at covering other conditions are available upon request. Hot water coils are approved for use with glycol (rates available upon request).

DO NOT use tin based solder. Brazing with tin based solder could cause equipment damage or possible injury to OCCUPANTS of the structure that is being conditioned.

TABLE 11: HOT WATER COIL (1 ROW, 25 & 30 TON)1

		CAPACITY (MBH) AT ENTERING WATER
GPM	CFM		TEMPERATURE
		140 °F	160 °F	180 °F	200 °F
	6000	91.4	115.3	139.3	163.6
	8000	102	128.8	155.8	182.9
10	10000	110.4	139.5	168.8	198.4
	12000	117.3	148.4	179.6	211.2
	15000	125.9	159.2	192.9	226.9
	6000	103	129.4	156	182.7
	8000	116.8	147	177.2	207.7
20	10000	128.2	161.3	194.7	228.2
	12000	137.8	173.6	209.5	245.6
	15000	150	189	228.2	267.8
	6000	107.6	135	162.5	190.1
	8000	122.8	154.3	185.8	217.5
30	10000	135.5	170.3	205.1	240.2
	12000	146.4	184	221.8	259.7
	15000	160.3	201.6	243	284.8
	6000	110.1	138	166	194.1
	8000	126.1	158.2	190.5	222.8
40	10000	139.6	175.2	210.9	246.8
	12000	151.2	189.8	228.5	267.5
	15000	166.1	208.6	251.3	294.1

1.Based on 60°F entering air temperature, 2.00” maximum pres- sure drop across the hot water coil.

PIPING CONNECTIONS

The hot water piping must enter the unit through the floor of the heat section compartment. The access doors to the com- partment are gasketed so the compartment can be sealed. However, as added protection for water leakage into the space, the piping access holes should be sealed with a heat resistant mastic (see the following illustration for approximate location of the compartment and piping connections.

1.Hot water, steam or electric heat is not available for front or rear supply.

14	Johnson Controls Unitary Products

Y32, Y34, Y33 specifications

The York Y33, Y32, and Y34 series represents a significant advancement in rooftop packaged units designed for commercial HVAC applications. These models are known for their reliability, energy efficiency, and innovative features that cater to diverse climate control needs.

The York Y33 series introduces modern features aimed at maximizing comfort and reducing energy costs. Its sleek design and compact size make it a versatile option for various applications, including retail spaces, office buildings, and industrial facilities. One of the standout features of the Y33 is its variable-speed compressor technology. This allows the unit to adjust its cooling output based on real-time demand, resulting in notable energy savings compared to traditional single-speed units.

The Y32 model builds upon the strengths of the Y33, offering enhanced capabilities for large commercial spaces. It incorporates advanced controls and building management system (BMS) connectivity, enabling seamless integration into existing infrastructure. The Y32 is designed with a focus on ease of maintenance and serviceability, featuring accessible components that streamline repair processes.

The York Y34 series emphasizes environmentally friendly practices, utilizing low-GWP refrigerants that minimizes its impact on the environment. It also boasts improved heat exchangers that increase efficiency and performance. The Y34’s design minimizes noise levels, making it ideal for applications where quiet operation is paramount, such as schools and healthcare facilities.

All three models share several key technologies, including fan and motor designs that optimize airflow while reducing energy consumption. Additionally, the series features enhanced insulation, significantly improving thermal performance and reducing the risk of condensation-related issues.

In summary, the York Y33, Y32, and Y34 models represent a commitment to innovation in commercial HVAC systems. Their combination of advanced technology, energy efficiency, and user-friendly design makes them suitable for a variety of applications while promoting sustainability and operational cost-effectiveness. Investing in these units not only supports optimal indoor climate control but also aligns with the growing demand for eco-friendly solutions in today’s commercial landscape.

York Y32, Y33, Y34 manual HOT Water HEATING1, Physical Data HOT Water Coil 1 ROW, Piping Connections

Models: Y32 Y34 Y33