Aprilaire 220 Service Manual
Aprilaire humidifier
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Also See for 220:
- Service manual (26 pages) ,
- Owner's manual (21 pages) ,
- Safety and installation instructions (4 pages)
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Summary of Contents for Aprilaire 220
- Page 3 WARNING: CAUTION: As an example, if the outdoor temperature is 20° F and, follow- ing step 3, the humidifier turns at “5” on the dial range, then the relative humidity in your home is 35%. - 2 -...
- Page 6 - 5 -...
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Page 7: Manual Humidistat
CAUTION: Aprilaire Humidifier Control Manual Humidistat NOTE IMPORTANT NORTH, EAST OR WEST CURRENT SENSING SOME FURNACES ARE USE 120 VAC SIDE OF HOME RELAY EQUIPPED POWER SOURCE WITH ACCESSORY OUTDOOR OTHER THAN FURNACE TRANSFORMER TEMPERATURE COMMON TERMINALS THAT CAN MOTOR CIRCUIT... - Page 8 - 7 -...
- Page 9 Instructions for Ordering Parts Specify: MODEL NO. — PART NAME — PART NO. - 8 -...
- Page 10 Instructions for Ordering Parts Specify: MODEL NO. — PART NAME — PART NO. - 9 -...
- Page 11 15A or 15B Instructions for Ordering Parts Specify: MODEL NO. — PART NAME — PART NO. - 10 -...
- Page 12 Instructions for Ordering Parts Specify: MODEL NO. — PART NAME — PART NO. - 11 -...
- Page 13 Instructions for Ordering Parts Specify: MODEL NO. — PART NAME — PART NO. - 12 -...
- Page 14 WARNING: Aprilaire Humidifier Control Manual Humidistat APRILAIRE HUMIDIFIER CONTROL TERMINAL STRIP NORTH, EAST OR WEST SIDE SOLENOID OF HOME 120 VAC 4 PIN HUMIDISTAT VALVE CONNECTOR 24 VAC OUTDOOR TRANSFORMER SOLENOID TEMPERATURE (2 VA MINIMUM) 24 VAC VALVE SENSOR & SHIELD...
- Page 15 fan motor fan motor - 14 -...
- Page 16 or 1B Instructions for Ordering Parts Specify: MODEL NO. — PART NAME — PART NO. - 15 -...
- Page 17 WARNING: - 16 -...
- Page 18 Aprilaire Humidifier Control Manual Humidistat NOTE APRILAIRE HUMIDIFIER CONTROL TERMINAL STRIP IMPORTANT NORTH, EAST OR WEST SIDE OF HOME OUTDOOR TRANSFORMER TEMPERATURE (2 VA MINIMUM) SENSOR & SHIELD CURRENT SENSING 24 VAC OUTDOOR RELAY TEMPERATURE ABOVE EXPECTED SENSOR & LEADS...
- Page 19 20A or 20B Instructions for Ordering Parts Specify: MODEL NO. — PART NAME — PART NO. - 18 -...
- Page 20 WARNING: - 19-...
- Page 21 Instructions for Ordering Parts Specify: MODEL NO. — PART NAME — PART NO. - 20 -...
- Page 22 Instructions for Ordering Parts Specify: MODEL NO. — PART NAME — PART NO.
- Page 23 WARNING: — — Old Style – Up to Serial # 484,805 (Model 110); 410,760 (Model 112) a. Disconnect electrical power and check humidistat switch contacts and all wiring connections. b. If both the motor and solenoid are not operating, the trouble may be in the relay. Disconnect electrical power and insert a relay that is known to function and check.
- Page 24 NOTE CURRENT SENSING RELAY COMMON LEAD FURNACE BLOWER MOTOR IMPORTANT - 23 -...
- Page 25 Instructions for Ordering Parts Specify: MODEL NO. — PART NAME — PART NO.
- Page 26 ® Call toll-free 1-800-334-6011 • FAX 608/257-4357...
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