York Affinity DNP042 User Manual

CONTENTS
INSTALLATION SAFETY INFORMATION . . . . . . . . 4
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . 4
APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SEQUENCE OF OPERATION. . . . . . . . . . . . . . . . . 17
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
TYPICAL WIRING DIAGRAM NOTES . . . . . . . . . . 37
NOTES, CAUTIONS AND WARNINGS
Installer should pay particular attention to the words: NOTE,
CAUTION, and WARNING. Notes
are intended to clarify or
make the installation easier. Cautions
are given to prevent
equipment damage. Warnings
are given to alert installer
that personal injury and/or equipment damage may result if
installation procedure is not handled properly.
INSTALLATION
MANUAL
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
AFFINITY™ SERIES
SINGLE PACKAGED GAS/ELECTRIC
AIR COOLED AIR CONDITIONERS
2, 2-1/2, 3, 3-1/2, 4 AND 5 NOMINAL TON
DNP024, 030, 036, 042, 048 & 060
280241-YIM-D-0909

York Affinity DNP042 Specifications

General

Brand	York
Model	Affinity DNP042
Category	Air Conditioner
Language	English

Summary

Installation Safety Information

Installation Procedures

Limitations

Units must be installed per national, local safety codes, and gas utility requirements.

Power and Control Wiring

Requirements for field wiring, grounding, and disconnects.

Gas Piping

Proper sizing and requirements for gas piping installation.

Sequence of Operation

Heating

Pressure Switch Proving

Pre-Purge

Ignition Trial Period

Pilot Flame Stabilization Period

Main Burner Operation

Details on two-stage heating warm-up, low heat, and high heat operation.

Lockout

Conditions that cause the unit to shut down and require manual reset.

High Temperature Limit Switch

Safety control that opens at high temperatures to prevent damage.

Rollout Switch

Shuts off ignition and main gas valve during flame rollout.

Flame Present with Gas Off

Control response if flame is detected when gas valve should be closed.

Gas Valve Stuck Open or Closed

Control actions for gas valve failures, including hard lockout.

Flame Sense Circuit Failure

Control response to internal flame sensing circuit hardware failures.

Safety Controls

Limit Switch (LS)

Safety control that opens at high temperatures to prevent damage.

Pressure Switch (PS)

Prevents ignition if the draft motor fails.

Flame Sensor

Detects pilot flame; prevents main gas valve operation if no flame.

Rollout Switch (RS)

Auxiliary Limit Switch (ALS)

Start-Up Procedures

Pre-Start Check List

Essential checks before starting the unit.

Operating Instructions

To Turn Off Gas to Unit

Post-Start Check List (Gas)

Manifold Gas Pressure Adjustment

Adjustment of Temperature Rise

Checking Gas Input