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Humidifier
Steam Humidifier
Models 1150 and 1160
Installation, Operation, and Maintenance Manual
READ AND SAVE THESE INSTRUCTIONS
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TABLE OF CONTENTS PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 OPERATION Materials Provided and Not Provided . . . . . . . . . . . . . . . . . . 3 Start-up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Electrical Specifications, Capacities and Weights . . . . . . . . 4 MAINTENANCE Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Inspect and Service the Humidifier . . . . . . . . . . . . .
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PRODUCT OVERVIEW Aprilaire Steam Humidifiers create steam by boiling water inside a steam chamber. This is accomplished by the transfer of energy from electric heating elements to the water inside the chamber. A three-level water probe is used to determine when to turn on and off a water fill valve in order to bring water into the chamber. Once the chamber is full and there is a call for humidity from the Automatic Steam Humidifier Control, the heating elements will be energized causing the w
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FIGURE 1 – Product Overview Distribution Tube 1½” (DN40) flexible steam hose Duct Control wiring knockout Power wiring knockout Electrical controls area Internal controller board Field wiring terminal block Electrical power area Display panel Immersion heaters (1 in Model 1150, 2 in Model 1160) Fill Valve 1/4” (DN8) compression fitting ¾” (DN20) copper overflow and drain Removable steam chamber Cover/shroud OM-4006 TABLE 1 – Electrical Specifications Current draw Shipping weight Operati
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FIGURE 2 – Dimensions (pertains to Models 1150 and 1160) Power wire knockout TOP VIEW 11.89” (302 mm) 5.50” 6.50” 1.00” (25 mm) (140 mm) (165 mm) 3.09” Control wire knockout (78 mm) Steam outlet 24.06” (611 mm) Venting LEFT SIDE VIEW FRONT VIEW 18.93” (481 mm) 9.99” (254 mm) BOTTOM VIEW 24.06” (611 mm) Chamber drain Chamber fill 0.83” (21 mm) 1.37” (35 mm) 1.19” (30 mm) 3.06” (78 mm) OM-4018 5
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FIGURE 3 – Mounting Hole Locations ��������� ����� ���������������� ����� �������� ��������������������� � ������������ 90-914 FIGURE 4 – Distribution Tube Dimensions ���������� ��������������� ���������� �������� ��� ����� �������������������������� � ������������������������������ ���������������������������� �������������� ������������������ ���������� ��������������� ���������� �������� ��� ����� �������������������������� � ������������������������������ �������������� ���������������������
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OVERVIEW OF HUMIDIFIER OPERATION INTERNAL CONTROLLER The internal controller within the humidifier cabinet responds to external inputs (e.g., humidistat and airflow proving switch) and internal inputs (e.g., water level probe inside the steam chamber) to provide: • Relative humidity (RH) control • Automatic end-of-season draining – Model 1150: With an on-off demand signal, the controller If the humidifier doesn’t receive a humidity demand signal maintains RH within 5% to 7% of set point.
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TABLE 2 – Display Panel Light Indications Indicator light(s) Status Description Blinking sequentially from The humidifier is in a forced cool-down period prior to a required automatic drain sequence. All right to left Normal operation On Power is on. Normal operation. On/Off (switch) Slow blinking (1/sec.) The electronic water level probe needs cleaning. Fast blinking (10/sec.) Probe logic fault. See Troubleshooting section. On The humidifier is draining. Normal operation. Drain The allowed amo
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INSTALLATION FIGURE 6 – Model 1150 Wiring Diagram APRILAIRE STEAM HUMIDIFIER MODEL 1150 SINGLE HEATER WIRING DIAGRAM ON/OFF CONFIGURATION ��� ����� ���� ��� �������������� �� ������� �� ��� ��� �� �� �� ���� �� �� ����� ������ �� ���������� ����� � ����� ���������� �� �� �� ������ �� �� ������� � ��� ������������ �� �� ��� �� �� �� �� �� ����� �� � � ��������� ������ � � ���� ������ � �� �� �� �� � ����������� �� � ������ � � ��� ��� � �������� ������������� ��������� � � ������ ����������� �
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FIGURE 7 – Model 1160 Wiring Diagram APRILAIRE STEAM HUMIDIFIER MODEL 1160 DUAL HEATER WIRING DIAGRAM MODULATING CONFIGURATION ��� ����� ���� ��� �������������� �� ������� �� ��� �� �� �� ���� ����� ������ �� ���������� ������� � ����� ��� ����� ���������� �� �� ����� �� � ��� �� ������ �� �� ��������� � ������������ ��� ��� �� �� �� �� �� �� �� � ��� ������� ���� � ��� ��� �������� � ������ ������ �� �� � � ���� ������ � �� �� � ��� ������� ���� � ����������� �� �������� � ������ � ������ � �
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SETTING SLIDE SWITCHES IMPORTANT: Slide switch on-off positions 1 through 16 are preset at the factory. These settings are determined by output capacity, water type, and demand signal type. Changing these settings will affect humidifier operation. Change on-off positions only per the instructions in this manual or as instructed by Aprilaire technical support staff. On the internal controller inside the humidifier, there are two banks of slide switches. Most are set at the factory according to
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TABLE 3 – Factory Slide Switch Settings Slide switch S1 Slide switch S2 Position Factory setting My setting Position Factory setting My setting 1 Off 9 Off 2 Off 10 See Table 4 Do not change. 3 Off 11 Off Do not change. 4 Off 12 Off Do not change. 5 See Table 4 Do not change. 13 Off Do not change. 6 Off Do not change. 14 Off Do not change. 7 Off Do not change. 15 Off Do not change. 8 Off Do not change. 16 Off Do not change. Note: Positions 5-8 and 10–16 are for factory use only. TABLE 4 – Slide
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CHOOSING A LOCATION FOR HUMIDIFIER COMPONENTS Before proceeding with the installation, you must first determine where the steam distribution tube will be installed as well as the humidifier itself. Steam Distribution Tube and Controls Location Since this dictates the rest of the installation, first determine where the steam distribution tube will be mounted in the ductwork of the HVAC system. Refer to Figure 10 for split system installations and Figure 11 for rooftop unit installations. These
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DISTRIBUTION TUBE AND CONTROL DEVICES LOCATION OPTIONS FIGURE 10 – Recommended Installation Locations, Split System Application ������ ��������������������� ���������� � � ������������� ��������������� ������������� ��������������� ������������������������� ������������ ������������ ������ ������ ������ ������������������� ������ ������������ ������������ ������������ ������ ������� ���������������� ��������� � � ������ ����� ������������� CHOOSING A DISTRIBUTION TUBE LOCATION When installing a
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FIGURE 11 – Placing a Distribution Assembly in a Rooftop Air Handler Application ������������ ���������� ������������ �������������� ������� ������� ��� ���� �������������������������� ��������������������������� ������������� ������� �������������� ����� ���������� ���������� �������������� ����� ������� �������������� ���������� ��������������� ������������������ �������������� ������������ ����������������� ��������� ����������� ����������� CHOOSING A DISTRIBUTION TUBE LOCATION When installi
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DISTRIBUTION TUBE INSTALLATION After the location for the distribution tube has been identified, follow the steps below and refer to Figure 12 to install the distribution tube in the duct. 1. Cut or drill a 1 5/8” diameter opening in the duct. 2. Drill a 3/8” hole in the opposite surface of the duct so that the distribution tube has a 2”/ft. (15%) pitch, sloping back towards the humidifier. The distribution tube is to be positioned in the duct such that 1 1/2” – 3 1/2” of the tube is extend
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FIGURE 12 – Distribution Tube Installation Duct Distribution tube Steam hose; do not exceed 10’ (3 m) in length 4.5” minimum from Mounting nut tube to duct ceiling 3/8” - 16 Hose pitch: 2”/ft (15%) Mounting bolt 3/8” - 16 x 1/2” Humidifier Secure and seal Tube pitch: 2”/ft (15%) face plates OM-4008 FIGURE 13 4.5” minimum from tube Distribution tube to duct ceiling 3/8” - 16 Threaded rod Face Plates 90-915 17
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MOUNTING THE HUMIDIFIER Mounting the humidifier on the wall When mounting on a wood stud wall (studs 16” [406 mm] on center), locate studs and position lag bolts in place so that each of the bolts centers on a stud. Mark hole locations and predrill ¼” (6 mm) diameter pilot holes. Secure cabinet to wall with lag bolts provided. When mounting on a metal stud wall, locate the studs (16” [406 mm] on center) and drill a 3/8” (10 mm) hole through the studs and wall. Push a 3/8” (10 mm) bolt through
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FIELD WIRING Humidifier field wiring All wiring must be in accordance with all governing codes and with the humidifier wiring diagram. Wiring diagrams are on pages 9 and 10 in this manual and the wiring diagram for your humidifier model is located inside the removable shroud. Power supply wiring must be rated for 221°F (105°C). The maximum ambient temperature is 80°F (27°C). Field wiring connections and requirements • Conduit knockouts are provided on the top of the cabinet. Control wiring kn
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WARNING 240 volts may cause serious injury or death from electrical shock. Shut off power at main breaker before installing supply wiring for humidifier. WARNING Failure to properly ground unit may result in property damage due to fire, or serious injury or death from electrical shock. LINE POWER The humidifier is designed for 240 VAC, single phase, 50/60 Hz input FIGURE 14 – Line Power Wiring Requirements power. The Model 1150 requires a 25 amp (minimum) breaker while the Model 1160 requ